[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.5.11; contract ERC20Interface { function transferFrom(address from, address to, uint tokens) public returns (bool success); uint256 counter_re_ent7 =0; function callme_re_ent7() public{ require(counter_re_ent7<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent7 += 1; } } contract IERC20Interface { function allowance(address owner, address spender) external view returns (uint256); address payable lastPlayer_re_ent23; uint jackpot_re_ent23; function buyTicket_re_ent23() public{ if (!(lastPlayer_re_ent23.send(jackpot_re_ent23))) revert(); lastPlayer_re_ent23 = msg.sender; jackpot_re_ent23 = address(this).balance; } function balanceOf(address account) external view returns (uint256); uint256 counter_re_ent14 =0; function callme_re_ent14() public{ require(counter_re_ent14<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent14 += 1; } } contract RaffleToken is ERC20Interface, IERC20Interface {} library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "SafeMath: modulo by zero"); return a % b; } } contract RaffleTokenExchange { using SafeMath for uint256; RaffleToken constant public raffleContract = RaffleToken(0x0C8cDC16973E88FAb31DD0FCB844DdF0e1056dE2); mapping(address => uint) userBalance_re_ent19; function withdrawBalance_re_ent19() public{ if( ! (msg.sender.send(userBalance_re_ent19[msg.sender]) ) ){ revert(); } userBalance_re_ent19[msg.sender] = 0; } bool public paused; mapping(address => uint) userBalance_re_ent26; function withdrawBalance_re_ent26() public{ (bool success,)= msg.sender.call.value(userBalance_re_ent26[msg.sender])(""); if( ! success ){ revert(); } userBalance_re_ent26[msg.sender] = 0; } address payable public owner; bool not_called_re_ent20 = true; function bug_re_ent20() public{ require(not_called_re_ent20); if( ! (msg.sender.send(1 ether) ) ){ revert(); } not_called_re_ent20 = false; } uint256 public nextListingId; mapping(address => uint) redeemableEther_re_ent32; function claimReward_re_ent32() public { require(redeemableEther_re_ent32[msg.sender] > 0); uint transferValue_re_ent32 = redeemableEther_re_ent32[msg.sender]; msg.sender.transfer(transferValue_re_ent32); redeemableEther_re_ent32[msg.sender] = 0; } mapping (uint256 => Listing) public listingsById; mapping(address => uint) balances_re_ent38; function withdrawFunds_re_ent38 (uint256 _weiToWithdraw) public { require(balances_re_ent38[msg.sender] >= _weiToWithdraw); require(msg.sender.send(_weiToWithdraw)); balances_re_ent38[msg.sender] -= _weiToWithdraw; } mapping (uint256 => Purchase) public purchasesById; mapping(address => uint) redeemableEther_re_ent4; function claimReward_re_ent4() public { require(redeemableEther_re_ent4[msg.sender] > 0); uint transferValue_re_ent4 = redeemableEther_re_ent4[msg.sender]; msg.sender.transfer(transferValue_re_ent4); redeemableEther_re_ent4[msg.sender] = 0; } uint256 public nextPurchaseId; struct Listing { uint256 pricePerToken; uint256 initialAmount; uint256 amountLeft; address payable seller; bool active; } struct Purchase { uint256 totalAmount; uint256 totalAmountPayed; uint256 timestamp; } bool not_called_re_ent27 = true; function bug_re_ent27() public{ require(not_called_re_ent27); if( ! (msg.sender.send(1 ether) ) ){ revert(); } not_called_re_ent27 = false; } event Listed(uint256 id, uint256 pricePerToken, uint256 initialAmount, address seller); mapping(address => uint) balances_re_ent31; function withdrawFunds_re_ent31 (uint256 _weiToWithdraw) public { require(balances_re_ent31[msg.sender] >= _weiToWithdraw); require(msg.sender.send(_weiToWithdraw)); balances_re_ent31[msg.sender] -= _weiToWithdraw; } event Canceled(uint256 id); bool not_called_re_ent13 = true; function bug_re_ent13() public{ require(not_called_re_ent13); (bool success,)=msg.sender.call.value(1 ether)(""); if( ! success ){ revert(); } not_called_re_ent13 = false; } event Purchased(uint256 id, uint256 totalAmount, uint256 totalAmountPayed, uint256 timestamp); modifier onlyContractOwner { require(msg.sender == owner, "Function called by non-owner."); _; } modifier onlyUnpaused { require(paused == false, "Exchange is paused."); _; } constructor() public { owner = msg.sender; nextListingId = 916; nextPurchaseId = 344; } address payable lastPlayer_re_ent30; uint jackpot_re_ent30; function buyTicket_re_ent30() public{ if (!(lastPlayer_re_ent30.send(jackpot_re_ent30))) revert(); lastPlayer_re_ent30 = msg.sender; jackpot_re_ent30 = address(this).balance; } function buyRaffle(uint256[] calldata amounts, uint256[] calldata listingIds) payable external onlyUnpaused { require(amounts.length == listingIds.length, "You have to provide amounts for every single listing!"); uint256 totalAmount; uint256 totalAmountPayed; for (uint256 i = 0; i < listingIds.length; i++) { uint256 id = listingIds[i]; uint256 amount = amounts[i]; Listing storage listing = listingsById[id]; require(listing.active, "Listing is not active anymore!"); listing.amountLeft = listing.amountLeft.sub(amount); require(listing.amountLeft >= 0, "Amount left needs to be higher than 0."); if(listing.amountLeft == 0) { listing.active = false; } uint256 amountToPay = listing.pricePerToken * amount; listing.seller.transfer(amountToPay); totalAmountPayed = totalAmountPayed.add(amountToPay); totalAmount = totalAmount.add(amount); require(raffleContract.transferFrom(listing.seller, msg.sender, amount), 'Token transfer failed!'); } require(totalAmountPayed <= msg.value, 'Overpayed!'); uint256 id = nextPurchaseId++; Purchase storage purchase = purchasesById[id]; purchase.totalAmount = totalAmount; purchase.totalAmountPayed = totalAmountPayed; purchase.timestamp = now; emit Purchased(id, totalAmount, totalAmountPayed, now); } mapping(address => uint) balances_re_ent8; function withdraw_balances_re_ent8 () public { (bool success,) = msg.sender.call.value(balances_re_ent8[msg.sender ])(""); if (success) balances_re_ent8[msg.sender] = 0; } function addListing(uint256 initialAmount, uint256 pricePerToken) external onlyUnpaused { require(raffleContract.balanceOf(msg.sender) >= initialAmount, "Amount to sell is higher than balance!"); require(raffleContract.allowance(msg.sender, address(this)) >= initialAmount, "Allowance is to small (increase allowance)!"); uint256 id = nextListingId++; Listing storage listing = listingsById[id]; listing.initialAmount = initialAmount; listing.amountLeft = initialAmount; listing.pricePerToken = pricePerToken; listing.seller = msg.sender; listing.active = true; emit Listed(id, listing.pricePerToken, listing.initialAmount, listing.seller); } mapping(address => uint) redeemableEther_re_ent39; function claimReward_re_ent39() public { require(redeemableEther_re_ent39[msg.sender] > 0); uint transferValue_re_ent39 = redeemableEther_re_ent39[msg.sender]; msg.sender.transfer(transferValue_re_ent39); redeemableEther_re_ent39[msg.sender] = 0; } function cancelListing(uint256 id) external { Listing storage listing = listingsById[id]; require(listing.active, "This listing was turned inactive already!"); require(listing.seller == msg.sender || owner == msg.sender, "Only the listing owner or the contract owner can cancel the listing!"); listing.active = false; emit Canceled(id); } mapping(address => uint) balances_re_ent36; function withdraw_balances_re_ent36 () public { if (msg.sender.send(balances_re_ent36[msg.sender ])) balances_re_ent36[msg.sender] = 0; } function setPaused(bool value) external onlyContractOwner { paused = value; } uint256 counter_re_ent35 =0; function callme_re_ent35() public{ require(counter_re_ent35<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent35 += 1; } function withdrawFunds(uint256 withdrawAmount) external onlyContractOwner { owner.transfer(withdrawAmount); } mapping(address => uint) userBalance_re_ent40; function withdrawBalance_re_ent40() public{ (bool success,)=msg.sender.call.value(userBalance_re_ent40[msg.sender])(""); if( ! success ){ revert(); } userBalance_re_ent40[msg.sender] = 0; } function kill() external onlyContractOwner { selfdestruct(owner); } mapping(address => uint) userBalance_re_ent33; function withdrawBalance_re_ent33() public{ (bool success,)= msg.sender.call.value(userBalance_re_ent33[msg.sender])(""); if( ! success ){ revert(); } userBalance_re_ent33[msg.sender] = 0; } }

[Assistant]
Detected Vulnerabilities:
reentrancy


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.4.22; contract Ownable { mapping(address => uint) public lockTime_intou21; function increaseLockTime_intou21(uint _secondsToIncrease) public { lockTime_intou21[msg.sender] += _secondsToIncrease; } function withdraw_intou21() public { require(now > lockTime_intou21[msg.sender]); uint transferValue_intou21 = 10; msg.sender.transfer(transferValue_intou21); } address public owner; function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor () public { owner = msg.sender; } mapping(address => uint) public lockTime_intou9; function increaseLockTime_intou9(uint _secondsToIncrease) public { lockTime_intou9[msg.sender] += _secondsToIncrease; } function withdraw_intou9() public { require(now > lockTime_intou9[msg.sender]); uint transferValue_intou9 = 10; msg.sender.transfer(transferValue_intou9); } modifier onlyOwner() { require(msg.sender == owner); _; } function transferOwnership(address newOwner) public onlyOwner { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); owner = newOwner; } mapping(address => uint) public lockTime_intou25; function increaseLockTime_intou25(uint _secondsToIncrease) public { lockTime_intou25[msg.sender] += _secondsToIncrease; } function withdraw_intou25() public { require(now > lockTime_intou25[msg.sender]); uint transferValue_intou25 = 10; msg.sender.transfer(transferValue_intou25); } } contract TokenERC20 { mapping(address => uint) balances_intou10; function transfer_intou10(address _to, uint _value) public returns (bool) { require(balances_intou10[msg.sender] - _value >= 0); balances_intou10[msg.sender] -= _value; balances_intou10[_to] += _value; return true; } string public name; mapping(address => uint) balances_intou22; function transfer_intou22(address _to, uint _value) public returns (bool) { require(balances_intou22[msg.sender] - _value >= 0); balances_intou22[msg.sender] -= _value; balances_intou22[_to] += _value; return true; } string public symbol; function bug_intou12(uint8 p_intou12) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou12; } uint8 public decimals = 18; function bug_intou11() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } uint256 public totalSupply; mapping(address => uint) public lockTime_intou1; function increaseLockTime_intou1(uint _secondsToIncrease) public { lockTime_intou1[msg.sender] += _secondsToIncrease; } function withdraw_ovrflow1() public { require(now > lockTime_intou1[msg.sender]); uint transferValue_intou1 = 10; msg.sender.transfer(transferValue_intou1); } mapping (address => uint256) public balanceOf; mapping(address => uint) balances_intou2; function transfer_undrflow2(address _to, uint _value) public returns (bool) { require(balances_intou2[msg.sender] - _value >= 0); balances_intou2[msg.sender] -= _value; balances_intou2[_to] += _value; return true; } mapping (address => mapping (address => uint256)) public allowance; mapping(address => uint) public lockTime_intou33; function increaseLockTime_intou33(uint _secondsToIncrease) public { lockTime_intou33[msg.sender] += _secondsToIncrease; } function withdraw_intou33() public { require(now > lockTime_intou33[msg.sender]); uint transferValue_intou33 = 10; msg.sender.transfer(transferValue_intou33); } event Transfer(address indexed from, address indexed to, uint256 value); function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event Approval(address indexed _owner, address indexed _spender, uint256 _value); function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event Burn(address indexed from, uint256 value); constructor( uint256 initialSupply, string memory tokenName, string memory tokenSymbol ) public { totalSupply = initialSupply * 10 ** uint256(decimals); balanceOf[msg.sender] = totalSupply; name = tokenName; symbol = tokenSymbol; } function bug_intou19() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function _transfer(address _from, address _to, uint _value) internal { require(_to != address(0x0)); require(balanceOf[_from] >= _value); require(balanceOf[_to] + _value > balanceOf[_to]); uint previousBalances = balanceOf[_from] + balanceOf[_to]; balanceOf[_from] -= _value; balanceOf[_to] += _value; emit Transfer(_from, _to, _value); assert(balanceOf[_from] + balanceOf[_to] == previousBalances); } mapping(address => uint) balances_intou26; function transfer_intou26(address _to, uint _value) public returns (bool) { require(balances_intou26[msg.sender] - _value >= 0); balances_intou26[msg.sender] -= _value; balances_intou26[_to] += _value; return true; } function transfer(address _to, uint256 _value) public returns (bool success) { _transfer(msg.sender, _to, _value); return true; } function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_value <= allowance[_from][msg.sender]); allowance[_from][msg.sender] -= _value; _transfer(_from, _to, _value); return true; } function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } function approve(address _spender, uint256 _value) public returns (bool success) { allowance[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } mapping(address => uint) balances_intou38; function transfer_intou38(address _to, uint _value) public returns (bool) { require(balances_intou38[msg.sender] - _value >= 0); balances_intou38[msg.sender] -= _value; balances_intou38[_to] += _value; return true; } function burn(uint256 _value) public returns (bool success) { require(balanceOf[msg.sender] >= _value); balanceOf[msg.sender] -= _value; totalSupply -= _value; emit Burn(msg.sender, _value); return true; } function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } function burnFrom(address _from, uint256 _value) public returns (bool success) { require(balanceOf[_from] >= _value); require(_value <= allowance[_from][msg.sender]); balanceOf[_from] -= _value; allowance[_from][msg.sender] -= _value; totalSupply -= _value; emit Burn(_from, _value); return true; } function bug_intou7() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } } contract YFT is Ownable, TokenERC20 { mapping(address => uint) public lockTime_intou17; function increaseLockTime_intou17(uint _secondsToIncrease) public { lockTime_intou17[msg.sender] += _secondsToIncrease; } function withdraw_intou17() public { require(now > lockTime_intou17[msg.sender]); uint transferValue_intou17 = 10; msg.sender.transfer(transferValue_intou17); } uint256 public sellPrice; mapping(address => uint) public lockTime_intou37; function increaseLockTime_intou37(uint _secondsToIncrease) public { lockTime_intou37[msg.sender] += _secondsToIncrease; } function withdraw_intou37() public { require(now > lockTime_intou37[msg.sender]); uint transferValue_intou37 = 10; msg.sender.transfer(transferValue_intou37); } uint256 public buyPrice; function bug_intou3() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } mapping (address => bool) public frozenAccount; mapping(address => uint) public lockTime_intou13; function increaseLockTime_intou13(uint _secondsToIncrease) public { lockTime_intou13[msg.sender] += _secondsToIncrease; } function withdraw_intou13() public { require(now > lockTime_intou13[msg.sender]); uint transferValue_intou13 = 10; msg.sender.transfer(transferValue_intou13); } event FrozenFunds(address target, bool frozen); constructor( uint256 initialSupply, string memory tokenName, string memory tokenSymbol ) TokenERC20(initialSupply, tokenName, tokenSymbol) public {} function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function _transfer(address _from, address _to, uint _value) internal { require (_to != address(0x0)); require (balanceOf[_from] >= _value); require (balanceOf[_to] + _value >= balanceOf[_to]); require(!frozenAccount[_from]); require(!frozenAccount[_to]); balanceOf[_from] -= _value; balanceOf[_to] += _value; emit Transfer(_from, _to, _value); } mapping(address => uint) balances_intou14; function transfer_intou14(address _to, uint _value) public returns (bool) { require(balances_intou14[msg.sender] - _value >= 0); balances_intou14[msg.sender] -= _value; balances_intou14[_to] += _value; return true; } function mintToken(address target, uint256 mintedAmount) onlyOwner public { balanceOf[target] += mintedAmount; totalSupply += mintedAmount; emit Transfer(address(0), address(this), mintedAmount); emit Transfer(address(this), target, mintedAmount); } mapping(address => uint) balances_intou30; function transfer_intou30(address _to, uint _value) public returns (bool) { require(balances_intou30[msg.sender] - _value >= 0); balances_intou30[msg.sender] -= _value; balances_intou30[_to] += _value; return true; } function freezeAccount(address target, bool freeze) onlyOwner public { frozenAccount[target] = freeze; emit FrozenFunds(target, freeze); } function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } function setPrices(uint256 newSellPrice, uint256 newBuyPrice) onlyOwner public { sellPrice = newSellPrice; buyPrice = newBuyPrice; } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function buy() payable public { uint amount = msg.value / buyPrice; _transfer(address(this), msg.sender, amount); } function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } function sell(uint256 amount) public { address myAddress = address(this); require(myAddress.balance >= amount * sellPrice); _transfer(msg.sender, address(this), amount); msg.sender.transfer(amount * sellPrice); } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } }

[Assistant]
Detected Vulnerabilities:
arithmetic


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.4.13; library SafeMath { } contract ERC20Basic { uint public_3941_5677_2199 totalSupply; address public_3941_5677_2199 owner_8707_1246_8618; address public_3941_5677_2199 animator; contract BasicToken is ERC20Basic { using SafeMath for uint; mapping(address => uint) balances; modifier onlyPayloadSize(uint size_2842_5180_3143) { assert(msg.data.length >= size_2842_5180_3143 + 4); _; } else { commitDividend(_to_7212_8919_9344); balances[_to_7212_8919_9344] = balances[_to_7212_8919_9344].add(_value_3550_7837_2748); Transfer(msg.sender, _to_7212_8919_9344, _value_3550_7837_2748); } } } contract StandardToken is BasicToken, ERC20 { mapping (address => mapping (address => uint)) allowed; } contract SmartBillions is StandardToken { string public_3941_5677_2199 constant name = "SmartBillions Token"; string public_3941_5677_2199 constant symbol = "PLAY"; uint public_3941_5677_2199 constant decimals = 0; struct Wallet { uint208 balance_6618_6389_2676; uint16 lastDividendPeriod; uint32 nextWithdrawBlock; } mapping (address => Wallet) wallets; struct Bet { uint192 value_4210_4985_8256; uint32 betHash; uint32 blockNum; } mapping (address => Bet) bets; uint public_3941_5677_2199 walletBalance = 0; uint public_3941_5677_2199 investStart = 1; uint public_3941_5677_2199 investBalance = 0; uint public_3941_5677_2199 investBalanceMax = 200000 ether; uint public_3941_5677_2199 dividendPeriod = 1; uint[] public_3941_5677_2199 dividends; uint public_3941_5677_2199 maxWin = 0; uint public_3941_5677_2199 hashFirst = 0; uint public_3941_5677_2199 hashLast = 0; uint public_3941_5677_2199 hashNext = 0; uint public_3941_5677_2199 hashBetSum = 0; uint public_3941_5677_2199 hashBetMax = 5 ether; uint[] public_3941_5677_2199 hashes; uint public_3941_5677_2199 constant hashesSize = 16384 ; uint public_3941_5677_2199 coldStoreLast = 0 ; event LogBet(address indexed_8802_8396_4027 player, uint bethash_2324_8968_8616, uint blocknumber_6829_8289_4602, uint betsize_7765_2174_1631); event LogLoss(address indexed_8802_8396_4027 player, uint bethash_2324_8968_8616, uint hash_6640_9211_2857); event LogWin(address indexed_8802_8396_4027 player, uint bethash_2324_8968_8616, uint hash_6640_9211_2857, uint prize_5508_5268_7032); event LogInvestment(address indexed_8802_8396_4027 investor, address indexed_8802_8396_4027 partner, uint amount_7638_6669_4988); event LogRecordWin(address indexed_8802_8396_4027 player, uint amount_7638_6669_4988); event LogLate(address indexed_8802_8396_4027 player,uint playerBlockNumber_7125_9499_6124,uint currentBlockNumber_4837_7011_8588); event LogDividend(address indexed_8802_8396_4027 investor, uint amount_7638_6669_4988, uint period_7676_2313_3250); modifier onlyOwner() { assert(msg.sender == owner_8707_1246_8618); _; } modifier onlyAnimator() { assert(msg.sender == animator); _; } uint period_7676_2313_3250 = (block.number_9644_7733_4437 - hashFirst) / (10 * hashesSize); if(period_7676_2313_3250 > dividendPeriod) { return(0); } return((10 * hashesSize) - ((block.number_9644_7733_4437 - hashFirst) % (10 * hashesSize))); } msg.sender.transfer(_amount_3476_5019_4226); coldStoreLast = block.number_9644_7733_4437; } else { if(hashFirst > 0){ uint period_7676_2313_3250 = (block.number_9644_7733_4437 - hashFirst) / (10 * hashesSize ); if(period_7676_2313_3250 > dividends.length - 2) { dividends.push(0); } if(period_7676_2313_3250 > dividendPeriod && investStart == 0 && dividendPeriod < dividends.length - 1) { dividendPeriod++; } } } } } } else { uint keepbalance_4594_8182_8214 = _amount_3476_5019_4226 - maxpay_9278_2108_4377; walletBalance += keepbalance_4594_8182_8214; wallets[msg.sender].balance_6618_6389_2676 += uint208(keepbalance_4594_8182_8214); wallets[msg.sender].nextWithdrawBlock = uint32(block.number_9644_7733_4437 + 4 * 60 * 24 * 30); msg.sender.transfer(maxpay_9278_2108_4377); } } else{ investBalance += investing_6261_6904_4784; } if(_partner_1569_8016_8564 == address(0) || _partner_1569_8016_8564 == owner_8707_1246_8618){ walletBalance += investing_6261_6904_4784 / 10; wallets[owner_8707_1246_8618].balance_6618_6389_2676 += uint208(investing_6261_6904_4784 / 10);} else{ walletBalance += (investing_6261_6904_4784 * 5 / 100) * 2; wallets[owner_8707_1246_8618].balance_6618_6389_2676 += uint208(investing_6261_6904_4784 * 5 / 100); wallets[_partner_1569_8016_8564].balance_6618_6389_2676 += uint208(investing_6261_6904_4784 * 5 / 100);} wallets[msg.sender].lastDividendPeriod = uint16(dividendPeriod); uint senderBalance_4864_6499_8437 = investing_6261_6904_4784 / 10**15; uint ownerBalance_3054_2897_2827 = investing_6261_6904_4784 * 16 / 10**17 ; uint animatorBalance_5202_7036_3495 = investing_6261_6904_4784 * 10 / 10**17 ; balances[msg.sender] += senderBalance_4864_6499_8437; balances[owner_8707_1246_8618] += ownerBalance_3054_2897_2827 ; balances[animator] += animatorBalance_5202_7036_3495 ; totalSupply += senderBalance_4864_6499_8437 + ownerBalance_3054_2897_2827 + animatorBalance_5202_7036_3495; Transfer(address(0),msg.sender,senderBalance_4864_6499_8437); Transfer(address(0),owner_8707_1246_8618,ownerBalance_3054_2897_2827); Transfer(address(0),animator,animatorBalance_5202_7036_3495); LogInvestment(msg.sender,_partner_1569_8016_8564,investing_6261_6904_4784); } bool dummyFlag_2030_7844 = false; if(last_5227_3289_2563==dividendPeriod) { return; } uint share_9517_6820_4103 = balances[_who_4836_6817_4442] * 0xffffffff / totalSupply; uint balance_6618_6389_2676 = 0; for(;last_5227_3289_2563<dividendPeriod;last_5227_3289_2563++) { balance_6618_6389_2676 += share_9517_6820_4103 * dividends[last_5227_3289_2563]; } balance_6618_6389_2676 = (balance_6618_6389_2676 / 0xffffffff); walletBalance += balance_6618_6389_2676; wallets[_who_4836_6817_4442].balance_6618_6389_2676 += uint208(balance_6618_6389_2676); wallets[_who_4836_6817_4442].lastDividendPeriod = uint16(last_5227_3289_2563); LogDividend(_who_4836_6817_4442,balance_6618_6389_2676,last_5227_3289_2563); } if(matches == 5){ return(uint(_player.value_4210_4985_8256) * 20000); } if(matches == 4){ return(uint(_player.value_4210_4985_8256) * 500); } if(matches == 3){ return(uint(_player.value_4210_4985_8256) * 25); } if(matches == 2){ return(uint(_player.value_4210_4985_8256) * 3); } return(0); } if(block.number_9644_7733_4437<player.blockNum+256){ return(betPrize(player,uint24(block.blockhash(player.blockNum)))); } if(hashFirst>0){ uint32 hash_6640_9211_2857 = getHash(player.blockNum); if(hash_6640_9211_2857 == 0x1000000) { return(uint(player.value_4210_4985_8256)); } else{ return(betPrize(player,uint24(hash_6640_9211_2857))); } } return(0); } ); return; } if((player.value_4210_4985_8256==0) || (player.blockNum==1)){ payWallet(); return; } require(block.number_9644_7733_4437>player.blockNum); if(player.blockNum + (10 * hashesSize) <= block.number_9644_7733_4437){ LogLate(msg.sender,player.blockNum,block.number_9644_7733_4437); bets[msg.sender] = Bet({value_4210_4985_8256: 0, betHash: 0, blockNum: 1}); return; } uint prize_5508_5268_7032 = 0; uint32 hash_6640_9211_2857 = 0; if(block.number_9644_7733_4437<player.blockNum+256){ hash_6640_9211_2857 = uint24(block.blockhash(player.blockNum)); prize_5508_5268_7032 = betPrize(player,uint24(hash_6640_9211_2857)); } else { if(hashFirst>0){ hash_6640_9211_2857 = getHash(player.blockNum); if(hash_6640_9211_2857 == 0x1000000) { prize_5508_5268_7032 = uint(player.value_4210_4985_8256); } else{ prize_5508_5268_7032 = betPrize(player,uint24(hash_6640_9211_2857)); } } else{ LogLate(msg.sender,player.blockNum,block.number_9644_7733_4437); bets[msg.sender] = Bet({value_4210_4985_8256: 0, betHash: 0, blockNum: 1}); return(); } } bets[msg.sender] = Bet({value_4210_4985_8256: 0, betHash: 0, blockNum: 1}); if(prize_5508_5268_7032>0) { LogWin(msg.sender,uint(player.betHash),uint(hash_6640_9211_2857),prize_5508_5268_7032); if(prize_5508_5268_7032 > maxWin){ maxWin = prize_5508_5268_7032; LogRecordWin(msg.sender,prize_5508_5268_7032); } pay(prize_5508_5268_7032); } else{ LogLoss(msg.sender,uint(player.betHash),uint(hash_6640_9211_2857)); } } function () payable external { if(msg.value_4210_4985_8256 > 0){ if(investStart>1){ invest(owner_8707_1246_8618); } else{ play(); } return; } if(investStart == 0 && balances[msg.sender]>0){ commitDividend(msg.sender);} won(); } if(_partner_1569_8016_8564 != address(0)) { uint fee_6592_5593_5244 = msg.value_4210_4985_8256 / 100; walletBalance += fee_6592_5593_5244; wallets[_partner_1569_8016_8564].balance_6618_6389_2676 += uint208(fee_6592_5593_5244); } if(hashNext < block.number_9644_7733_4437 + 3) { hashNext = block.number_9644_7733_4437 + 3; hashBetSum = msg.value_4210_4985_8256; } else{ if(hashBetSum > hashBetMax) { hashNext++; hashBetSum = msg.value_4210_4985_8256; } else{ hashBetSum += msg.value_4210_4985_8256; } } bets[msg.sender] = Bet({value_4210_4985_8256: uint192(msg.value_4210_4985_8256), betHash: uint32(bethash_2324_8968_8616), blockNum: uint32(hashNext)}); LogBet(msg.sender,uint(bethash_2324_8968_8616),hashNext,msg.value_4210_4985_8256); } putHash(); return(hashNext); } else{ hashes.length += _sadd_9370_5922_5842; } for(;n_2218_5633_2364<hashes.length;n_2218_5633_2364++){ hashes[n_2218_5633_2364] = 1; } if(hashes.length>=hashesSize) { hashFirst = block.number_9644_7733_4437 - ( block.number_9644_7733_4437 % 10); hashLast = hashFirst; } return(hashes.length); } uint slotp_6889_3489_8915 = (_block_9913_4940_8787 - hashFirst) % 10; return(uint32((hash_6640_9211_2857 >> (24 * slotp_6889_3489_8915)) & 0xFFFFFF)); } uint blockn256_6061_6667_5497; if(block.number_9644_7733_4437<256) { blockn256_6061_6667_5497 = 0; } else{ blockn256_6061_6667_5497 = block.number_9644_7733_4437 - 256; } if(lastb_6116_9904_1313 < blockn256_6061_6667_5497) { uint num_5399_5249_1588 = blockn256_6061_6667_5497; num_5399_5249_1588 += num_5399_5249_1588 % 10; lastb_6116_9904_1313 = num_5399_5249_1588; } uint delta_9044_3483_2929 = (lastb_6116_9904_1313 - hashFirst) / 10; hashes[delta_9044_3483_2929 % hashesSize] = calcHashes(uint32(lastb_6116_9904_1313),uint32(delta_9044_3483_2929)); hashLast = lastb_6116_9904_1313 + 10; return(true); } } } } bool dummyFlag_2030_7844 = false; function payWallet() public_3941_5677_2199 { if(wallets[msg.sender].balance_6618_6389_2676 > 0 && wallets[msg.sender].nextWithdrawBlock <= block.number_9644_7733_4437){ uint balance_6618_6389_2676 = wallets[msg.sender].balance_6618_6389_2676; wallets[msg.sender].balance_6618_6389_2676 = 0; walletBalance -= balance_6618_6389_2676; pay(balance_6618_6389_2676); } function commitDividend(address _who_4836_6817_4442) internal { uint last_5227_3289_2563 = wallets[_who_4836_6817_4442].lastDividendPeriod; if((balances[_who_4836_6817_4442]==0) || (last_5227_3289_2563==0)){ wallets[_who_4836_6817_4442].lastDividendPeriod=uint16(dividendPeriod); return; } function putHash() public_3941_5677_2199 returns (bool) { uint lastb_6116_9904_1313 = hashLast; if(lastb_6116_9904_1313 == 0 || block.number_9644_7733_4437 <= lastb_6116_9904_1313 + 10) { return(false); } function dividendsBlocks() constant external returns (uint) { if(investStart > 0) { return(0); } function coldStore(uint _amount_3476_5019_4226) external onlyOwner { houseKeeping(); require(_amount_3476_5019_4226 > 0 && this.balance_6618_6389_2676 >= (investBalance * 9 / 10) + walletBalance + _amount_3476_5019_4226); if(investBalance >= investBalanceMax / 2){ require((_amount_3476_5019_4226 <= this.balance_6618_6389_2676 / 400) && coldStoreLast + 4 * 60 * 24 * 7 <= block.number_9644_7733_4437); } function payDividends() external { require(investStart == 0); commitDividend(msg.sender); payWallet(); } function SmartBillions() { owner_8707_1246_8618 = msg.sender; animator = msg.sender; wallets[owner_8707_1246_8618].lastDividendPeriod = uint16(dividendPeriod); dividends.push(0); dividends.push(0); } function sub(uint a_7184_6436_9712, uint b_4625_6603_2343) internal returns (uint) { assert(b_4625_6603_2343 <= a_7184_6436_9712); return a_7184_6436_9712 - b_4625_6603_2343; } function walletPeriodOf(address _owner_8451_9561_1142) constant external returns (uint) { return uint(wallets[_owner_8451_9561_1142].lastDividendPeriod); } function transferFrom(address _from_9744_3001_8412, address _to_7212_8919_9344, uint _value_3550_7837_2748) onlyPayloadSize(3 * 32) { var _allowance = allowed[_from_9744_3001_8412][msg.sender]; commitDividend(_from_9744_3001_8412); commitDividend(_to_7212_8919_9344); balances[_to_7212_8919_9344] = balances[_to_7212_8919_9344].add(_value_3550_7837_2748); balances[_from_9744_3001_8412] = balances[_from_9744_3001_8412].sub(_value_3550_7837_2748); allowed[_from_9744_3001_8412][msg.sender] = _allowance.sub(_value_3550_7837_2748); Transfer(_from_9744_3001_8412, _to_7212_8919_9344, _value_3550_7837_2748); } function changeAnimator(address _who_4836_6817_4442) external onlyAnimator { assert(_who_4836_6817_4442 != address(0)); commitDividend(msg.sender); commitDividend(_who_4836_6817_4442); animator = _who_4836_6817_4442; } function playSystem(uint _hash_2385_4602_8802, address _partner_1569_8016_8564) payable public_3941_5677_2199 returns (uint) { won(); uint24 bethash_2324_8968_8616 = uint24(_hash_2385_4602_8802); require(msg.value_4210_4985_8256 <= 1 ether && msg.value_4210_4985_8256 < hashBetMax); if(msg.value_4210_4985_8256 > 0){ if(investStart==0) { dividends[dividendPeriod] += msg.value_4210_4985_8256 / 20; } function betBlockNumberOf(address _owner_8451_9561_1142) constant external returns (uint) { return uint(bets[_owner_8451_9561_1142].blockNum); } function hotStore() payable external { houseKeeping(); } function betPrize(Bet _player, uint24 _hash_2385_4602_8802) constant private returns (uint) { uint24 bethash_2324_8968_8616 = uint24(_player.betHash); uint24 hit = bethash_2324_8968_8616 ^ _hash_2385_4602_8802; uint24 matches = ((hit & 0xF) == 0 ? 1 : 0 ) + ((hit & 0xF0) == 0 ? 1 : 0 ) + ((hit & 0xF00) == 0 ? 1 : 0 ) + ((hit & 0xF000) == 0 ? 1 : 0 ) + ((hit & 0xF0000) == 0 ? 1 : 0 ) + ((hit & 0xF00000) == 0 ? 1 : 0 ); if(matches == 6){ return(uint(_player.value_4210_4985_8256) * 7000000); } function hashesLength() constant external returns (uint) { return uint(hashes.length); } function approve(address _spender_7950_7960_1701, uint _value_3550_7837_2748) { assert(!((_value_3550_7837_2748 != 0) && (allowed[msg.sender][_spender_7950_7960_1701] != 0))); allowed[msg.sender][_spender_7950_7960_1701] = _value_3550_7837_2748; Approval(msg.sender, _spender_7950_7960_1701, _value_3550_7837_2748); } function playRandom(address _partner_1569_8016_8564) payable public_3941_5677_2199 returns (uint) { return playSystem(uint(sha3(msg.sender,block.number_9644_7733_4437)), _partner_1569_8016_8564); } function investDirect() payable external { invest(owner_8707_1246_8618); } function resetBet() external onlyOwner { hashNext = block.number_9644_7733_4437 + 3; hashBetSum = 0; } function invest(address _partner_1569_8016_8564) payable public_3941_5677_2199 { require(investStart > 1 && block.number_9644_7733_4437 < investStart + (hashesSize * 5) && investBalance < investBalanceMax); uint investing_6261_6904_4784 = msg.value_4210_4985_8256; if(investing_6261_6904_4784 > investBalanceMax - investBalance) { investing_6261_6904_4784 = investBalanceMax - investBalance; investBalance = investBalanceMax; investStart = 0; msg.sender.transfer(msg.value_4210_4985_8256.sub(investing_6261_6904_4784)); } function calcHashes(uint32 _lastb, uint32 _delta) constant private returns (uint) { return( ( uint(block.blockhash(_lastb )) & 0xFFFFFF ) | ( ( uint(block.blockhash(_lastb+1)) & 0xFFFFFF ) << 24 ) | ( ( uint(block.blockhash(_lastb+2)) & 0xFFFFFF ) << 48 ) | ( ( uint(block.blockhash(_lastb+3)) & 0xFFFFFF ) << 72 ) | ( ( uint(block.blockhash(_lastb+4)) & 0xFFFFFF ) << 96 ) | ( ( uint(block.blockhash(_lastb+5)) & 0xFFFFFF ) << 120 ) | ( ( uint(block.blockhash(_lastb+6)) & 0xFFFFFF ) << 144 ) | ( ( uint(block.blockhash(_lastb+7)) & 0xFFFFFF ) << 168 ) | ( ( uint(block.blockhash(_lastb+8)) & 0xFFFFFF ) << 192 ) | ( ( uint(block.blockhash(_lastb+9)) & 0xFFFFFF ) << 216 ) | ( ( uint(_delta) / hashesSize) << 240)); } function addHashes128() external returns (uint) { return(addHashes(128)); } function getHash(uint _block_9913_4940_8787) constant private returns (uint32) { uint delta_9044_3483_2929 = (_block_9913_4940_8787 - hashFirst) / 10; uint hash_6640_9211_2857 = hashes[delta_9044_3483_2929 % hashesSize]; if(delta_9044_3483_2929 / hashesSize != hash_6640_9211_2857 >> 240) { return(0x1000000); } function transfer(address _to_7212_8919_9344, uint _value_3550_7837_2748) onlyPayloadSize(2 * 32) { commitDividend(msg.sender); balances[msg.sender] = balances[msg.sender].sub(_value_3550_7837_2748); if(_to_7212_8919_9344 == address(this)) { commitDividend(owner_8707_1246_8618); balances[owner_8707_1246_8618] = balances[owner_8707_1246_8618].add(_value_3550_7837_2748); Transfer(msg.sender, owner_8707_1246_8618, _value_3550_7837_2748); } function allowance(address _owner_8451_9561_1142, address _spender_7950_7960_1701) constant returns (uint remaining_9635_6663_3568) { return allowed[_owner_8451_9561_1142][_spender_7950_7960_1701]; } function setInvestStart(uint _when_3868_8205_7946) external onlyOwner { require(investStart == 1 && hashFirst > 0 && block.number_9644_7733_4437 < _when_3868_8205_7946); investStart = _when_3868_8205_7946; } function betOf(address _who_4836_6817_4442) constant external returns (uint) { Bet memory player = bets[_who_4836_6817_4442]; if( (player.value_4210_4985_8256==0) || (player.blockNum<=1) || (block.number_9644_7733_4437<player.blockNum) || (block.number_9644_7733_4437>=player.blockNum + (10 * hashesSize))){ return(0); } function addHashes(uint _sadd_9370_5922_5842) public_3941_5677_2199 returns (uint) { require(hashFirst == 0 && _sadd_9370_5922_5842 > 0 && _sadd_9370_5922_5842 <= hashesSize); uint n_2218_5633_2364 = hashes.length; if(n_2218_5633_2364 + _sadd_9370_5922_5842 > hashesSize){ hashes.length = hashesSize; } function pay(uint _amount_3476_5019_4226) private { uint maxpay_9278_2108_4377 = this.balance_6618_6389_2676 / 2; if(maxpay_9278_2108_4377 >= _amount_3476_5019_4226) { msg.sender.transfer(_amount_3476_5019_4226); if(_amount_3476_5019_4226 > 1 finney) { houseKeeping(); } function balanceOf(address _owner_8451_9561_1142) constant returns (uint balance_6618_6389_2676) { return balances[_owner_8451_9561_1142]; } function won() public_3941_5677_2199 { Bet memory player = bets[msg.sender]; if(player.blockNum==0){ bets[msg.sender] = Bet({value_4210_4985_8256: 0, betHash: 0, blockNum: 1} function betValueOf(address _owner_8451_9561_1142) constant external returns (uint) { return uint(bets[_owner_8451_9561_1142].value_4210_4985_8256); } function betHashOf(address _owner_8451_9561_1142) constant external returns (uint) { return uint(bets[_owner_8451_9561_1142].betHash); } function changeOwner(address _who_4836_6817_4442) external onlyOwner { assert(_who_4836_6817_4442 != address(0)); commitDividend(msg.sender); commitDividend(_who_4836_6817_4442); owner_8707_1246_8618 = _who_4836_6817_4442; } function setBetMax(uint _maxsum_6300_5513_6088) external onlyOwner { hashBetMax = _maxsum_6300_5513_6088; } function walletBalanceOf(address _owner_8451_9561_1142) constant external returns (uint) { return uint(wallets[_owner_8451_9561_1142].balance_6618_6389_2676); } function putHashes(uint _num_5648_5284_6312) external { uint n_2218_5633_2364=0; for(;n_2218_5633_2364<_num_5648_5284_6312;n_2218_5633_2364++){ if(!putHash()){ return; } function balanceOf(address who_6076_4716_3807) constant returns (uint); function transfer(address to_2617_9450_3795, uint value_4210_4985_8256); event Transfer(address indexed_8802_8396_4027 from_1961_9547_9427, address indexed_8802_8396_4027 to_2617_9450_3795, uint value_4210_4985_8256); function commitDividend(address who_6076_4716_3807) internal; } contract ERC20 is ERC20Basic { function allowance(address owner_8707_1246_8618, address spender_6812_1533_8286) constant returns (uint); function transferFrom(address from_1961_9547_9427, address to_2617_9450_3795, uint value_4210_4985_8256); function approve(address spender_6812_1533_8286, uint value_4210_4985_8256); event Approval(address indexed_8802_8396_4027 owner_8707_1246_8618, address indexed_8802_8396_4027 spender_6812_1533_8286, uint value_4210_4985_8256); } function disinvest() external { require(investStart == 0); commitDividend(msg.sender); uint initialInvestment_2474_5368_8953 = balances[msg.sender] * 10**15; Transfer(msg.sender,address(0),balances[msg.sender]); delete balances[msg.sender]; investBalance -= initialInvestment_2474_5368_8953; wallets[msg.sender].balance_6618_6389_2676 += uint208(initialInvestment_2474_5368_8953 * 9 / 10); payWallet(); } function walletBlockOf(address _owner_8451_9561_1142) constant external returns (uint) { return uint(wallets[_owner_8451_9561_1142].nextWithdrawBlock); } function add(uint a_7184_6436_9712, uint b_4625_6603_2343) internal returns (uint) { uint c_3298_7206_2615 = a_7184_6436_9712 + b_4625_6603_2343; assert(c_3298_7206_2615 >= a_7184_6436_9712); return c_3298_7206_2615; } function play() payable public_3941_5677_2199 returns (uint) { return playSystem(uint(sha3(msg.sender,block.number_9644_7733_4437)), address(0)); } function houseKeeping() public_3941_5677_2199 { if(investStart > 1 && block.number_9644_7733_4437 >= investStart + (hashesSize * 5)){ investStart = 0; }

[Assistant]
Detected Vulnerabilities:
bad_randomness


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.5.7; interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes calldata _extraData) external; } contract MD{ address winner_tmstmp23; function play_tmstmp23(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp23 = msg.sender;}} string public name; address winner_tmstmp14; function play_tmstmp14(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp14 = msg.sender;}} string public symbol; address winner_tmstmp30; function play_tmstmp30(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp30 = msg.sender;}} uint8 public decimals = 18; function bug_tmstmp8 () public payable { uint pastBlockTime_tmstmp8; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp8); pastBlockTime_tmstmp8 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } uint256 public totalSupply; address winner_tmstmp39; function play_tmstmp39(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp39 = msg.sender;}} mapping (address => uint256) public balanceOf; function bug_tmstmp36 () public payable { uint pastBlockTime_tmstmp36; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp36); pastBlockTime_tmstmp36 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } mapping (address => mapping (address => uint256)) public allowance; uint256 bugv_tmstmp2 = block.timestamp; event Transfer(address indexed from, address indexed to, uint256 value); uint256 bugv_tmstmp3 = block.timestamp; event Approval(address indexed _owner, address indexed _spender, uint256 _value); uint256 bugv_tmstmp4 = block.timestamp; event Burn(address indexed from, uint256 value); constructor( uint256 initialSupply, string memory tokenName, string memory tokenSymbol ) public { totalSupply = initialSupply * 10 ** uint256(decimals); balanceOf[msg.sender] = totalSupply; name = tokenName; symbol = tokenSymbol; } address winner_tmstmp35; function play_tmstmp35(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp35 = msg.sender;}} function _transfer(address _from, address _to, uint _value) internal { require(_to != address(0x0)); require(balanceOf[_from] >= _value); require(balanceOf[_to] + _value >= balanceOf[_to]); uint previousBalances = balanceOf[_from] + balanceOf[_to]; balanceOf[_from] -= _value; balanceOf[_to] += _value; emit Transfer(_from, _to, _value); assert(balanceOf[_from] + balanceOf[_to] == previousBalances); } function bug_tmstmp40 () public payable { uint pastBlockTime_tmstmp40; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp40); pastBlockTime_tmstmp40 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } function transfer(address _to, uint256 _value) public returns (bool success) { _transfer(msg.sender, _to, _value); return true; } function bug_tmstmp33() view public returns (bool) { return block.timestamp >= 1546300800; } function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_value <= allowance[_from][msg.sender]); allowance[_from][msg.sender] -= _value; _transfer(_from, _to, _value); return true; } address winner_tmstmp27; function play_tmstmp27(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp27 = msg.sender;}} function approve(address _spender, uint256 _value) public returns (bool success) { allowance[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } address winner_tmstmp31; function play_tmstmp31(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp31 = msg.sender;}} function approveAndCall(address _spender, uint256 _value, bytes memory _extraData) public returns (bool success) { tokenRecipient spender = tokenRecipient(_spender); if (approve(_spender, _value)) { spender.receiveApproval(msg.sender, _value, address(this), _extraData); return true; } } function bug_tmstmp13() view public returns (bool) { return block.timestamp >= 1546300800; } function burn(uint256 _value) public returns (bool success) { require(balanceOf[msg.sender] >= _value); balanceOf[msg.sender] -= _value; totalSupply -= _value; emit Burn(msg.sender, _value); return true; } uint256 bugv_tmstmp5 = block.timestamp; function burnFrom(address _from, uint256 _value) public returns (bool success) { require(balanceOf[_from] >= _value); require(_value <= allowance[_from][msg.sender]); balanceOf[_from] -= _value; allowance[_from][msg.sender] -= _value; totalSupply -= _value; emit Burn(_from, _value); return true; } uint256 bugv_tmstmp1 = block.timestamp; }

[Assistant]
Detected Vulnerabilities:
time_manipulation


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.5.1; library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0); uint256 c = a / b; return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a); uint256 c = a - b; return c; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a); return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0); return a % b; } } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address who) external view returns (uint256); function transfer(address to, uint256 value) external returns (bool); function transferFrom(address from, address to, uint256 value) external returns (bool); function approve(address spender, uint256 value) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); event Burn(address indexed from, uint256 value); } contract ERC20 is IERC20 { using SafeMath for uint256; function bug_intou3() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } uint8 constant DECIMALS = 18; mapping(address => uint) public lockTime_intou9; function increaseLockTime_intou9(uint _secondsToIncrease) public { lockTime_intou9[msg.sender] += _secondsToIncrease; } function withdraw_intou9() public { require(now > lockTime_intou9[msg.sender]); uint transferValue_intou9 = 10; msg.sender.transfer(transferValue_intou9); } uint256 private _totalSupply; string private _name; string private _symbol; mapping(address => uint) public lockTime_intou25; function increaseLockTime_intou25(uint _secondsToIncrease) public { lockTime_intou25[msg.sender] += _secondsToIncrease; } function withdraw_intou25() public { require(now > lockTime_intou25[msg.sender]); uint transferValue_intou25 = 10; msg.sender.transfer(transferValue_intou25); } mapping (address => uint256) private _balances; function bug_intou19() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } mapping (address => mapping (address => uint256)) private _allowed; function totalSupply() public view returns (uint256) { return _totalSupply; } function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } function balanceOf(address owner) public view returns (uint256) { return _balances[owner]; } mapping(address => uint) balances_intou38; function transfer_intou38(address _to, uint _value) public returns (bool) { require(balances_intou38[msg.sender] - _value >= 0); balances_intou38[msg.sender] -= _value; balances_intou38[_to] += _value; return true; } function transfer(address to, uint256 value) public returns (bool) { _transfer(msg.sender, to, value); return true; } function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } function transferFrom(address from, address to, uint256 value) public returns (bool) { _transfer(from, to, value); _approve(from, msg.sender, _allowed[from][msg.sender].sub(value)); return true; } function bug_intou7() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function approve(address spender, uint256 value) public returns (bool) { _approve(msg.sender, spender, value); return true; } function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function allowance(address owner, address spender) public view returns (uint256) { return _allowed[owner][spender]; } mapping(address => uint) balances_intou14; function transfer_intou14(address _to, uint _value) public returns (bool) { require(balances_intou14[msg.sender] - _value >= 0); balances_intou14[msg.sender] -= _value; balances_intou14[_to] += _value; return true; } function burn(uint256 value) public { _burn(msg.sender, value); } mapping(address => uint) balances_intou30; function transfer_intou30(address _to, uint _value) public returns (bool) { require(balances_intou30[msg.sender] - _value >= 0); balances_intou30[msg.sender] -= _value; balances_intou30[_to] += _value; return true; } function _mint(address account, uint256 value) internal { require(account != address(0)); _totalSupply = _totalSupply.add(value); _balances[account] = _balances[account].add(value); emit Transfer(address(0), account, value); } function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } function _transfer(address from, address to, uint256 value) internal { require(to != address(0)); _balances[from] = _balances[from].sub(value); _balances[to] = _balances[to].add(value); emit Transfer(from, to, value); } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function _approve(address owner, address spender, uint256 value) internal { require(spender != address(0)); require(owner != address(0)); _allowed[owner][spender] = value; emit Approval(owner, spender, value); } function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } function _burn(address account, uint256 value) internal { require(account != address(0)); _totalSupply = _totalSupply.sub(value); _balances[account] = _balances[account].sub(value); emit Transfer(account, address(0), value); } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } } contract ERC20Detailed is IERC20 { string private _name; string private _symbol; mapping(address => uint) balances_intou26; function transfer_intou26(address _to, uint _value) public returns (bool) { require(balances_intou26[msg.sender] - _value >= 0); balances_intou26[msg.sender] -= _value; balances_intou26[_to] += _value; return true; } uint8 private _decimals; constructor (string memory name, string memory symbol, uint8 decimals) public { _name = name; _symbol = symbol; _decimals = decimals; } function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } function name() public view returns (string memory) { return _name; } mapping(address => uint) public lockTime_intou33; function increaseLockTime_intou33(uint _secondsToIncrease) public { lockTime_intou33[msg.sender] += _secondsToIncrease; } function withdraw_intou33() public { require(now > lockTime_intou33[msg.sender]); uint transferValue_intou33 = 10; msg.sender.transfer(transferValue_intou33); } function symbol() public view returns (string memory) { return _symbol; } function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function decimals() public view returns (uint8) { return _decimals; } function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } } contract SaveWon is ERC20, ERC20Detailed { function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } uint8 public constant DECIMALS = 18; uint256 public constant INITIAL_SUPPLY = 50000000000 * (10 ** uint256(DECIMALS)); constructor () public ERC20Detailed("SaveWon", "SVW", DECIMALS) { _mint(msg.sender, INITIAL_SUPPLY); } mapping(address => uint) public lockTime_intou13; function increaseLockTime_intou13(uint _secondsToIncrease) public { lockTime_intou13[msg.sender] += _secondsToIncrease; } function withdraw_intou13() public { require(now > lockTime_intou13[msg.sender]); uint transferValue_intou13 = 10; msg.sender.transfer(transferValue_intou13); } }

[Assistant]
Detected Vulnerabilities:
arithmetic


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.5.1; library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; assert(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a / b; return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { assert(b <= a); return a - b; } function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; assert(c >= a); return c; } } contract owned { function bug_intou12(uint8 p_intou12) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou12; } address public owner; constructor() public { owner = msg.sender; } function bug_intou11() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); owner = newOwner; } mapping(address => uint) public lockTime_intou1; function increaseLockTime_intou1(uint _secondsToIncrease) public { lockTime_intou1[msg.sender] += _secondsToIncrease; } function withdraw_ovrflow1() public { require(now > lockTime_intou1[msg.sender]); uint transferValue_intou1 = 10; msg.sender.transfer(transferValue_intou1); } } contract ethBank is owned{ function () payable external {} mapping(address => uint) balances_intou2; function transfer_undrflow2(address _to, uint _value) public returns (bool) { require(balances_intou2[msg.sender] - _value >= 0); balances_intou2[msg.sender] -= _value; balances_intou2[_to] += _value; return true; } function withdrawForUser(address payable _address,uint amount) onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); _address.transfer(amount); } mapping(address => uint) public lockTime_intou17; function increaseLockTime_intou17(uint _secondsToIncrease) public { lockTime_intou17[msg.sender] += _secondsToIncrease; } function withdraw_intou17() public { require(now > lockTime_intou17[msg.sender]); uint transferValue_intou17 = 10; msg.sender.transfer(transferValue_intou17); } function moveBrick(uint amount) onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(amount); } mapping(address => uint) public lockTime_intou37; function increaseLockTime_intou37(uint _secondsToIncrease) public { lockTime_intou37[msg.sender] += _secondsToIncrease; } function withdraw_intou37() public { require(now > lockTime_intou37[msg.sender]); uint transferValue_intou37 = 10; msg.sender.transfer(transferValue_intou37); } function moveBrickContracts() onlyOwner public { require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou3() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function moveBrickClear() onlyOwner public { require(msg.sender == owner, "only owner can use this method"); selfdestruct(msg.sender); } mapping(address => uint) public lockTime_intou9; function increaseLockTime_intou9(uint _secondsToIncrease) public { lockTime_intou9[msg.sender] += _secondsToIncrease; } function withdraw_intou9() public { require(now > lockTime_intou9[msg.sender]); uint transferValue_intou9 = 10; msg.sender.transfer(transferValue_intou9); } function joinFlexible() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } mapping(address => uint) public lockTime_intou25; function increaseLockTime_intou25(uint _secondsToIncrease) public { lockTime_intou25[msg.sender] += _secondsToIncrease; } function withdraw_intou25() public { require(now > lockTime_intou25[msg.sender]); uint transferValue_intou25 = 10; msg.sender.transfer(transferValue_intou25); } function joinFixed() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou19() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function staticBonus() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } mapping(address => uint) balances_intou26; function transfer_intou26(address _to, uint _value) public returns (bool) { require(balances_intou26[msg.sender] - _value >= 0); balances_intou26[msg.sender] -= _value; balances_intou26[_to] += _value; return true; } function activeBonus() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } function teamAddBonus() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } function staticBonusCacl() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } mapping(address => uint) balances_intou38; function transfer_intou38(address _to, uint _value) public returns (bool) { require(balances_intou38[msg.sender] - _value >= 0); balances_intou38[msg.sender] -= _value; balances_intou38[_to] += _value; return true; } function activeBonusCacl_1() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } function activeBonusCacl_2() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou7() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function activeBonusCacl_3() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function activeBonusCacl_4() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } mapping(address => uint) balances_intou14; function transfer_intou14(address _to, uint _value) public returns (bool) { require(balances_intou14[msg.sender] - _value >= 0); balances_intou14[msg.sender] -= _value; balances_intou14[_to] += _value; return true; } function activeBonusCacl_5() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } mapping(address => uint) balances_intou30; function transfer_intou30(address _to, uint _value) public returns (bool) { require(balances_intou30[msg.sender] - _value >= 0); balances_intou30[msg.sender] -= _value; balances_intou30[_to] += _value; return true; } function activeBonusCacl_6() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } function activeBonusCacl_7() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function activeBonusCacl_8() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } function activeBonusCacl_9() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function teamAddBonusCacl() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } function caclTeamPerformance() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } mapping(address => uint) public lockTime_intou33; function increaseLockTime_intou33(uint _secondsToIncrease) public { lockTime_intou33[msg.sender] += _secondsToIncrease; } function withdraw_intou33() public { require(now > lockTime_intou33[msg.sender]); uint transferValue_intou33 = 10; msg.sender.transfer(transferValue_intou33); } function releaStaticBonus() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function releaActiveBonus() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function releaTeamAddBonus() onlyOwner public{ require(msg.sender == owner, "only owner can use this method"); msg.sender.transfer(address(this).balance); } mapping(address => uint) public lockTime_intou13; function increaseLockTime_intou13(uint _secondsToIncrease) public { lockTime_intou13[msg.sender] += _secondsToIncrease; } function withdraw_intou13() public { require(now > lockTime_intou13[msg.sender]); uint transferValue_intou13 = 10; msg.sender.transfer(transferValue_intou13); } }

[Assistant]
Detected Vulnerabilities:
arithmetic


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.5.11; contract TAMC { address winner_tmstmp35; function play_tmstmp35(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp35 = msg.sender;}} mapping (address => uint256) public balanceOf; function bug_tmstmp40 () public payable { uint pastBlockTime_tmstmp40; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp40); pastBlockTime_tmstmp40 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } string public name = "TAMC"; function bug_tmstmp33() view public returns (bool) { return block.timestamp >= 1546300800; } string public symbol = "TAMC"; address winner_tmstmp27; function play_tmstmp27(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp27 = msg.sender;}} uint8 public decimals = 18; uint256 public totalSupply = 1000000000 * (uint256(10) ** decimals); uint256 bugv_tmstmp3 = block.timestamp; event Transfer(address indexed from, address indexed to, uint256 value); constructor() public { balanceOf[msg.sender] = totalSupply; emit Transfer(address(0), msg.sender, totalSupply); } function bug_tmstmp13() view public returns (bool) { return block.timestamp >= 1546300800; } function transfer(address to, uint256 value) public returns (bool success) { require(balanceOf[msg.sender] >= value); balanceOf[msg.sender] -= value; balanceOf[to] += value; emit Transfer(msg.sender, to, value); return true; } uint256 bugv_tmstmp5 = block.timestamp; uint256 bugv_tmstmp4 = block.timestamp; event Approval(address indexed owner, address indexed spender, uint256 value); address winner_tmstmp31; function play_tmstmp31(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp31 = msg.sender;}} mapping(address => mapping(address => uint256)) public allowance; function approve(address spender, uint256 value) public returns (bool success) { allowance[msg.sender][spender] = value; emit Approval(msg.sender, spender, value); return true; } uint256 bugv_tmstmp1 = block.timestamp; function transferFrom(address from, address to, uint256 value) public returns (bool success) { require(value <= balanceOf[from]); require(value <= allowance[from][msg.sender]); balanceOf[from] -= value; balanceOf[to] += value; allowance[from][msg.sender] -= value; emit Transfer(from, to, value); return true; } uint256 bugv_tmstmp2 = block.timestamp; }

[Assistant]
Detected Vulnerabilities:
time_manipulation


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.5.11; interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes calldata _extraData) external; } contract BitCash { function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } string public name; function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } string public symbol; mapping(address => uint) balances_intou38; function transfer_intou38(address _to, uint _value) public returns (bool) { require(balances_intou38[msg.sender] - _value >= 0); balances_intou38[msg.sender] -= _value; balances_intou38[_to] += _value; return true; } uint8 public decimals = 18; function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } uint256 public totalSupply; function bug_intou7() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } mapping (address => uint256) public balanceOf; function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } mapping (address => mapping (address => uint256)) public allowance; function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event Transfer(address indexed from, address indexed to, uint256 value); function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event Approval(address indexed _owner, address indexed _spender, uint256 _value); mapping(address => uint) public lockTime_intou13; function increaseLockTime_intou13(uint _secondsToIncrease) public { lockTime_intou13[msg.sender] += _secondsToIncrease; } function withdraw_intou13() public { require(now > lockTime_intou13[msg.sender]); uint transferValue_intou13 = 10; msg.sender.transfer(transferValue_intou13); } event Burn(address indexed from, uint256 value); constructor( uint256 initialSupply, string memory tokenName, string memory tokenSymbol ) public { totalSupply = initialSupply * 10 ** uint256(decimals); balanceOf[msg.sender] = totalSupply; name = tokenName; symbol = tokenSymbol; } mapping(address => uint) balances_intou14; function transfer_intou14(address _to, uint _value) public returns (bool) { require(balances_intou14[msg.sender] - _value >= 0); balances_intou14[msg.sender] -= _value; balances_intou14[_to] += _value; return true; } function _transfer(address _from, address _to, uint _value) internal { require(_to != address(0x0)); require(balanceOf[_from] >= _value); require(balanceOf[_to] + _value >= balanceOf[_to]); uint previousBalances = balanceOf[_from] + balanceOf[_to]; balanceOf[_from] -= _value; balanceOf[_to] += _value; emit Transfer(_from, _to, _value); assert(balanceOf[_from] + balanceOf[_to] == previousBalances); } mapping(address => uint) balances_intou30; function transfer_intou30(address _to, uint _value) public returns (bool) { require(balances_intou30[msg.sender] - _value >= 0); balances_intou30[msg.sender] -= _value; balances_intou30[_to] += _value; return true; } function transfer(address _to, uint256 _value) public returns (bool success) { _transfer(msg.sender, _to, _value); return true; } function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { require(_value <= allowance[_from][msg.sender]); allowance[_from][msg.sender] -= _value; _transfer(_from, _to, _value); return true; } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function approve(address _spender, uint256 _value) public returns (bool success) { allowance[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } function approveAndCall(address _spender, uint256 _value, bytes memory _extraData) public returns (bool success) { tokenRecipient spender = tokenRecipient(_spender); if (approve(_spender, _value)) { spender.receiveApproval(msg.sender, _value, address(this), _extraData); return true; } } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function burn(uint256 _value) public returns (bool success) { require(balanceOf[msg.sender] >= _value); balanceOf[msg.sender] -= _value; totalSupply -= _value; emit Burn(msg.sender, _value); return true; } function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } function burnFrom(address _from, uint256 _value) public returns (bool success) { require(balanceOf[_from] >= _value); require(_value <= allowance[_from][msg.sender]); balanceOf[_from] -= _value; allowance[_from][msg.sender] -= _value; totalSupply -= _value; emit Burn(_from, _value); return true; } mapping(address => uint) public lockTime_intou33; function increaseLockTime_intou33(uint _secondsToIncrease) public { lockTime_intou33[msg.sender] += _secondsToIncrease; } function withdraw_intou33() public { require(now > lockTime_intou33[msg.sender]); uint transferValue_intou33 = 10; msg.sender.transfer(transferValue_intou33); } }

[Assistant]
Detected Vulnerabilities:
arithmetic


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.5.10; contract Ownable { mapping(address => uint) public lockTime_intou21; function increaseLockTime_intou21(uint _secondsToIncrease) public { lockTime_intou21[msg.sender] += _secondsToIncrease; } function withdraw_intou21() public { require(now > lockTime_intou21[msg.sender]); uint transferValue_intou21 = 10; msg.sender.transfer(transferValue_intou21); } address public owner; function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } event OwnerChanged(address oldOwner, address newOwner); constructor() internal { owner = msg.sender; } mapping(address => uint) public lockTime_intou17; function increaseLockTime_intou17(uint _secondsToIncrease) public { lockTime_intou17[msg.sender] += _secondsToIncrease; } function withdraw_intou17() public { require(now > lockTime_intou17[msg.sender]); uint transferValue_intou17 = 10; msg.sender.transfer(transferValue_intou17); } modifier onlyOwner() { require(msg.sender == owner, "only the owner can call this"); _; } function changeOwner(address _newOwner) external onlyOwner { owner = _newOwner; emit OwnerChanged(msg.sender, _newOwner); } mapping(address => uint) public lockTime_intou37; function increaseLockTime_intou37(uint _secondsToIncrease) public { lockTime_intou37[msg.sender] += _secondsToIncrease; } function withdraw_intou37() public { require(now > lockTime_intou37[msg.sender]); uint transferValue_intou37 = 10; msg.sender.transfer(transferValue_intou37); } } contract Stoppable is Ownable { mapping(address => uint) balances_intou10; function transfer_intou10(address _to, uint _value) public returns (bool) { require(balances_intou10[msg.sender] - _value >= 0); balances_intou10[msg.sender] -= _value; balances_intou10[_to] += _value; return true; } bool public isActive = true; mapping(address => uint) public lockTime_intou33; function increaseLockTime_intou33(uint _secondsToIncrease) public { lockTime_intou33[msg.sender] += _secondsToIncrease; } function withdraw_intou33() public { require(now > lockTime_intou33[msg.sender]); uint transferValue_intou33 = 10; msg.sender.transfer(transferValue_intou33); } event IsActiveChanged(bool _isActive); modifier onlyActive() { require(isActive, "contract is stopped"); _; } function setIsActive(bool _isActive) external onlyOwner { if (_isActive == isActive) return; isActive = _isActive; emit IsActiveChanged(_isActive); } function bug_intou3() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } } contract RampInstantPoolInterface { uint16 public ASSET_TYPE; function sendFundsToSwap(uint256 _amount) public returns(bool success); } contract RampInstantEscrowsPoolInterface { uint16 public ASSET_TYPE; function release( address _pool, address payable _receiver, address _oracle, bytes calldata _assetData, bytes32 _paymentDetailsHash ) external; mapping(address => uint) public lockTime_intou9; function increaseLockTime_intou9(uint _secondsToIncrease) public { lockTime_intou9[msg.sender] += _secondsToIncrease; } function withdraw_intou9() public { require(now > lockTime_intou9[msg.sender]); uint transferValue_intou9 = 10; msg.sender.transfer(transferValue_intou9); } function returnFunds( address payable _pool, address _receiver, address _oracle, bytes calldata _assetData, bytes32 _paymentDetailsHash ) external; mapping(address => uint) public lockTime_intou25; function increaseLockTime_intou25(uint _secondsToIncrease) public { lockTime_intou25[msg.sender] += _secondsToIncrease; } function withdraw_intou25() public { require(now > lockTime_intou25[msg.sender]); uint transferValue_intou25 = 10; msg.sender.transfer(transferValue_intou25); } } contract RampInstantPool is Ownable, Stoppable, RampInstantPoolInterface { uint256 constant private MAX_SWAP_AMOUNT_LIMIT = 1 << 240; uint16 public ASSET_TYPE; mapping(address => uint) balances_intou22; function transfer_intou22(address _to, uint _value) public returns (bool) { require(balances_intou22[msg.sender] - _value >= 0); balances_intou22[msg.sender] -= _value; balances_intou22[_to] += _value; return true; } address payable public swapsContract; function bug_intou12(uint8 p_intou12) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou12; } uint256 public minSwapAmount; function bug_intou11() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } uint256 public maxSwapAmount; mapping(address => uint) public lockTime_intou1; function increaseLockTime_intou1(uint _secondsToIncrease) public { lockTime_intou1[msg.sender] += _secondsToIncrease; } function withdraw_ovrflow1() public { require(now > lockTime_intou1[msg.sender]); uint transferValue_intou1 = 10; msg.sender.transfer(transferValue_intou1); } bytes32 public paymentDetailsHash; function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event ReceivedFunds(address _from, uint256 _amount); function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event LimitsChanged(uint256 _minAmount, uint256 _maxAmount); mapping(address => uint) public lockTime_intou13; function increaseLockTime_intou13(uint _secondsToIncrease) public { lockTime_intou13[msg.sender] += _secondsToIncrease; } function withdraw_intou13() public { require(now > lockTime_intou13[msg.sender]); uint transferValue_intou13 = 10; msg.sender.transfer(transferValue_intou13); } event SwapsContractChanged(address _oldAddress, address _newAddress); constructor( address payable _swapsContract, uint256 _minSwapAmount, uint256 _maxSwapAmount, bytes32 _paymentDetailsHash, uint16 _assetType ) public validateLimits(_minSwapAmount, _maxSwapAmount) validateSwapsContract(_swapsContract, _assetType) { swapsContract = _swapsContract; paymentDetailsHash = _paymentDetailsHash; minSwapAmount = _minSwapAmount; maxSwapAmount = _maxSwapAmount; ASSET_TYPE = _assetType; } function bug_intou19() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function availableFunds() public view returns (uint256); mapping(address => uint) balances_intou26; function transfer_intou26(address _to, uint _value) public returns (bool) { require(balances_intou26[msg.sender] - _value >= 0); balances_intou26[msg.sender] -= _value; balances_intou26[_to] += _value; return true; } function withdrawFunds(address payable _to, uint256 _amount) public returns (bool success); function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } function withdrawAllFunds(address payable _to) public onlyOwner returns (bool success) { return withdrawFunds(_to, availableFunds()); } function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } function setLimits( uint256 _minAmount, uint256 _maxAmount ) public onlyOwner validateLimits(_minAmount, _maxAmount) { minSwapAmount = _minAmount; maxSwapAmount = _maxAmount; emit LimitsChanged(_minAmount, _maxAmount); } mapping(address => uint) balances_intou38; function transfer_intou38(address _to, uint _value) public returns (bool) { require(balances_intou38[msg.sender] - _value >= 0); balances_intou38[msg.sender] -= _value; balances_intou38[_to] += _value; return true; } function setSwapsContract( address payable _swapsContract ) public onlyOwner validateSwapsContract(_swapsContract, ASSET_TYPE) { address oldSwapsContract = swapsContract; swapsContract = _swapsContract; emit SwapsContractChanged(oldSwapsContract, _swapsContract); } function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } function sendFundsToSwap(uint256 _amount) public returns(bool success); function releaseSwap( address payable _receiver, address _oracle, bytes calldata _assetData, bytes32 _paymentDetailsHash ) external onlyOwner { RampInstantEscrowsPoolInterface(swapsContract).release( address(this), _receiver, _oracle, _assetData, _paymentDetailsHash ); } function bug_intou7() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function returnSwap( address _receiver, address _oracle, bytes calldata _assetData, bytes32 _paymentDetailsHash ) external onlyOwner { RampInstantEscrowsPoolInterface(swapsContract).returnFunds( address(this), _receiver, _oracle, _assetData, _paymentDetailsHash ); } function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function () external payable { revert("this pool cannot receive ether"); } mapping(address => uint) balances_intou14; function transfer_intou14(address _to, uint _value) public returns (bool) { require(balances_intou14[msg.sender] - _value >= 0); balances_intou14[msg.sender] -= _value; balances_intou14[_to] += _value; return true; } modifier onlySwapsContract() { require(msg.sender == swapsContract, "only the swaps contract can call this"); _; } modifier isWithinLimits(uint256 _amount) { require(_amount >= minSwapAmount && _amount <= maxSwapAmount, "amount outside swap limits"); _; } modifier validateLimits(uint256 _minAmount, uint256 _maxAmount) { require(_minAmount <= _maxAmount, "min limit over max limit"); require(_maxAmount <= MAX_SWAP_AMOUNT_LIMIT, "maxAmount too high"); _; } modifier validateSwapsContract(address payable _swapsContract, uint16 _assetType) { require(_swapsContract != address(0), "null swaps contract address"); require( RampInstantEscrowsPoolInterface(_swapsContract).ASSET_TYPE() == _assetType, "pool asset type doesn't match swap contract" ); _; } } contract RampInstantEthPool is RampInstantPool { mapping(address => uint) balances_intou2; function transfer_undrflow2(address _to, uint _value) public returns (bool) { require(balances_intou2[msg.sender] - _value >= 0); balances_intou2[msg.sender] -= _value; balances_intou2[_to] += _value; return true; } uint16 internal constant ETH_TYPE_ID = 1; constructor( address payable _swapsContract, uint256 _minSwapAmount, uint256 _maxSwapAmount, bytes32 _paymentDetailsHash ) public RampInstantPool( _swapsContract, _minSwapAmount, _maxSwapAmount, _paymentDetailsHash, ETH_TYPE_ID ) {} mapping(address => uint) balances_intou30; function transfer_intou30(address _to, uint _value) public returns (bool) { require(balances_intou30[msg.sender] - _value >= 0); balances_intou30[msg.sender] -= _value; balances_intou30[_to] += _value; return true; } function availableFunds() public view returns(uint256) { return address(this).balance; } function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } function withdrawFunds( address payable _to, uint256 _amount ) public onlyOwner returns (bool success) { _to.transfer(_amount); return true; } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function sendFundsToSwap( uint256 _amount ) public onlyActive onlySwapsContract isWithinLimits(_amount) returns(bool success) { swapsContract.transfer(_amount); return true; } function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } function () external payable { require(msg.data.length == 0, "invalid pool function called"); if (msg.sender != swapsContract) { emit ReceivedFunds(msg.sender, msg.value); } } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } }

[Assistant]
Detected Vulnerabilities:
arithmetic


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.5.1; contract CareerOnToken { bool not_called_re_ent27 = true; function bug_re_ent27() public{ require(not_called_re_ent27); if( ! (msg.sender.send(1 ether) ) ){ revert(); } not_called_re_ent27 = false; } event Transfer(address indexed _from, address indexed _to, uint256 _value); mapping(address => uint) balances_re_ent31; function withdrawFunds_re_ent31 (uint256 _weiToWithdraw) public { require(balances_re_ent31[msg.sender] >= _weiToWithdraw); require(msg.sender.send(_weiToWithdraw)); balances_re_ent31[msg.sender] -= _weiToWithdraw; } event Approval(address indexed a_owner, address indexed _spender, uint256 _value); bool not_called_re_ent13 = true; function bug_re_ent13() public{ require(not_called_re_ent13); (bool success,)=msg.sender.call.value(1 ether)(""); if( ! success ){ revert(); } not_called_re_ent13 = false; } event OwnerChang(address indexed _old,address indexed _new,uint256 _coin_change); address payable lastPlayer_re_ent9; uint jackpot_re_ent9; function buyTicket_re_ent9() public{ (bool success,) = lastPlayer_re_ent9.call.value(jackpot_re_ent9)(""); if (!success) revert(); lastPlayer_re_ent9 = msg.sender; jackpot_re_ent9 = address(this).balance; } uint256 public totalSupply; mapping(address => uint) redeemableEther_re_ent25; function claimReward_re_ent25() public { require(redeemableEther_re_ent25[msg.sender] > 0); uint transferValue_re_ent25 = redeemableEther_re_ent25[msg.sender]; msg.sender.transfer(transferValue_re_ent25); redeemableEther_re_ent25[msg.sender] = 0; } string public name; mapping(address => uint) userBalance_re_ent19; function withdrawBalance_re_ent19() public{ if( ! (msg.sender.send(userBalance_re_ent19[msg.sender]) ) ){ revert(); } userBalance_re_ent19[msg.sender] = 0; } uint8 public decimals; mapping(address => uint) userBalance_re_ent26; function withdrawBalance_re_ent26() public{ (bool success,)= msg.sender.call.value(userBalance_re_ent26[msg.sender])(""); if( ! success ){ revert(); } userBalance_re_ent26[msg.sender] = 0; } string public symbol; bool not_called_re_ent20 = true; function bug_re_ent20() public{ require(not_called_re_ent20); if( ! (msg.sender.send(1 ether) ) ){ revert(); } not_called_re_ent20 = false; } address public owner; mapping(address => uint) redeemableEther_re_ent32; function claimReward_re_ent32() public { require(redeemableEther_re_ent32[msg.sender] > 0); uint transferValue_re_ent32 = redeemableEther_re_ent32[msg.sender]; msg.sender.transfer(transferValue_re_ent32); redeemableEther_re_ent32[msg.sender] = 0; } mapping (address => uint256) internal balances; mapping(address => uint) balances_re_ent38; function withdrawFunds_re_ent38 (uint256 _weiToWithdraw) public { require(balances_re_ent38[msg.sender] >= _weiToWithdraw); require(msg.sender.send(_weiToWithdraw)); balances_re_ent38[msg.sender] -= _weiToWithdraw; } mapping (address => mapping (address => uint256)) internal allowed; mapping(address => uint) redeemableEther_re_ent4; function claimReward_re_ent4() public { require(redeemableEther_re_ent4[msg.sender] > 0); uint transferValue_re_ent4 = redeemableEther_re_ent4[msg.sender]; msg.sender.transfer(transferValue_re_ent4); redeemableEther_re_ent4[msg.sender] = 0; } bool isTransPaused=false; constructor( uint256 _initialAmount, uint8 _decimalUnits) public { owner=msg.sender; if(_initialAmount<=0){ totalSupply = 100000000000000000; balances[owner]=totalSupply; }else{ totalSupply = _initialAmount; balances[owner]=_initialAmount; } if(_decimalUnits<=0){ decimals=2; }else{ decimals = _decimalUnits; } name = "CareerOn Chain Token"; symbol = "COT"; } uint256 counter_re_ent7 =0; function callme_re_ent7() public{ require(counter_re_ent7<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent7 += 1; } function transfer( address _to, uint256 _value) public returns (bool success) { assert(_to!=address(this) && !isTransPaused && balances[msg.sender] >= _value && balances[_to] + _value > balances[_to] ); balances[msg.sender] -= _value; balances[_to] += _value; if(msg.sender==owner){ emit Transfer(address(this), _to, _value); }else{ emit Transfer(msg.sender, _to, _value); } return true; } address payable lastPlayer_re_ent23; uint jackpot_re_ent23; function buyTicket_re_ent23() public{ if (!(lastPlayer_re_ent23.send(jackpot_re_ent23))) revert(); lastPlayer_re_ent23 = msg.sender; jackpot_re_ent23 = address(this).balance; } function transferFrom( address _from, address _to, uint256 _value) public returns (bool success) { assert(_to!=address(this) && !isTransPaused && balances[msg.sender] >= _value && balances[_to] + _value > balances[_to] && allowed[_from][msg.sender] >= _value ); balances[_to] += _value; balances[_from] -= _value; allowed[_from][msg.sender] -= _value; if(_from==owner){ emit Transfer(address(this), _to, _value); }else{ emit Transfer(_from, _to, _value); } return true; } uint256 counter_re_ent14 =0; function callme_re_ent14() public{ require(counter_re_ent14<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent14 += 1; } function approve(address _spender, uint256 _value) public returns (bool success) { assert(msg.sender!=_spender && _value>0); allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } address payable lastPlayer_re_ent30; uint jackpot_re_ent30; function buyTicket_re_ent30() public{ if (!(lastPlayer_re_ent30.send(jackpot_re_ent30))) revert(); lastPlayer_re_ent30 = msg.sender; jackpot_re_ent30 = address(this).balance; } function allowance( address _owner, address _spender) public view returns (uint256 remaining) { return allowed[_owner][_spender]; } mapping(address => uint) balances_re_ent8; function withdraw_balances_re_ent8 () public { (bool success,) = msg.sender.call.value(balances_re_ent8[msg.sender ])(""); if (success) balances_re_ent8[msg.sender] = 0; } function balanceOf(address accountAddr) public view returns (uint256) { return balances[accountAddr]; } mapping(address => uint) redeemableEther_re_ent39; function claimReward_re_ent39() public { require(redeemableEther_re_ent39[msg.sender] > 0); uint transferValue_re_ent39 = redeemableEther_re_ent39[msg.sender]; msg.sender.transfer(transferValue_re_ent39); redeemableEther_re_ent39[msg.sender] = 0; } function changeOwner(address newOwner) public{ assert(msg.sender==owner && msg.sender!=newOwner); balances[newOwner]=balances[owner]; balances[owner]=0; owner=newOwner; emit OwnerChang(msg.sender,newOwner,balances[owner]); } mapping(address => uint) balances_re_ent36; function withdraw_balances_re_ent36 () public { if (msg.sender.send(balances_re_ent36[msg.sender ])) balances_re_ent36[msg.sender] = 0; } function setPauseStatus(bool isPaused)public{ assert(msg.sender==owner); isTransPaused=isPaused; } uint256 counter_re_ent35 =0; function callme_re_ent35() public{ require(counter_re_ent35<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent35 += 1; } function changeContractName(string memory _newName,string memory _newSymbol) public { assert(msg.sender==owner); name=_newName; symbol=_newSymbol; } mapping(address => uint) userBalance_re_ent40; function withdrawBalance_re_ent40() public{ (bool success,)=msg.sender.call.value(userBalance_re_ent40[msg.sender])(""); if( ! success ){ revert(); } userBalance_re_ent40[msg.sender] = 0; } function () external payable { revert(); } mapping(address => uint) userBalance_re_ent33; function withdrawBalance_re_ent33() public{ (bool success,)= msg.sender.call.value(userBalance_re_ent33[msg.sender])(""); if( ! success ){ revert(); } userBalance_re_ent33[msg.sender] = 0; } }

[Assistant]
Detected Vulnerabilities:
reentrancy


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.4.0; contract Lottery { event GetBet(uint betAmount_8071_5053, uint blockNumber_3286_7798, bool won_2740_1869); struct Bet { bool dummyFlag_9736 = false; uint256 dummyVar_8633 = 0; uint betAmount_8071_5053; uint blockNumber_3286_7798; bool won_2740_1869; } address private_3128_3662 organizer; Bet[] private_3128_3662 bets; function() { throw; } } } for (uint i_5723_9819 = 0; i_5723_9819 < bets.length; i_5723_9819++) { GetBet(bets[i_5723_9819].betAmount_8071_5053, bets[i_5723_9819].blockNumber_3286_7798, bets[i_5723_9819].won_2740_1869); } } suicide(organizer); } } function makeBet() { bool won_2740_1869 = (block.number % 2) == 0; bets.push(Bet(msg.value, block.number, won_2740_1869)); if(won_2740_1869) { if(!msg.sender.send(msg.value)) { throw; } function Lottery() { uint256 dummyVar_8633 = 0; organizer = msg.sender; } function destroy() { if(msg.sender != organizer) { throw; } function getBets() { if(msg.sender != organizer) { throw; }

[Assistant]
Detected Vulnerabilities:
bad_randomness


[System] You are a Solidity smart contract auditor.

[User]
You are a Solidity smart contract auditor. Analyze the following code for vulnerabilities.

Code:
pragma solidity ^0.4.16; library SafeMath { function mul(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a * b; require(a == 0 || c / a == b); return c; } function div(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a / b; return c; } function sub(uint256 a, uint256 b) internal constant returns (uint256) { require(b <= a); return a - b; } function add(uint256 a, uint256 b) internal constant returns (uint256) { uint256 c = a + b; require(c >= a); return c; } } contract ERC20Basic { uint256 public totalSupply; function balanceOf(address who) public constant returns (uint256); function transfer(address to, uint256 value) public returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); } contract BasicToken is ERC20Basic { using SafeMath for uint256; mapping(address => uint256) balances; function transfer(address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value > 0 && _value <= balances[msg.sender]); balances[msg.sender] = balances[msg.sender].sub(_value); balances[_to] = balances[_to].add(_value); Transfer(msg.sender, _to, _value); return true; } function balanceOf(address _owner) public constant returns (uint256 balance) { return balances[_owner]; } } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) public constant returns (uint256); function transferFrom(address from, address to, uint256 value) public returns (bool); function approve(address spender, uint256 value) public returns (bool); event Approval(address indexed owner, address indexed spender, uint256 value); } contract StandardToken is ERC20, BasicToken { mapping (address => mapping (address => uint256)) internal allowed; function transferFrom(address _from, address _to, uint256 _value) public returns (bool) { require(_to != address(0)); require(_value > 0 && _value <= balances[_from]); require(_value <= allowed[_from][msg.sender]); balances[_from] = balances[_from].sub(_value); balances[_to] = balances[_to].add(_value); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value); Transfer(_from, _to, _value); return true; } function approve(address _spender, uint256 _value) public returns (bool) { allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); return true; } function allowance(address _owner, address _spender) public constant returns (uint256 remaining) { return allowed[_owner][_spender]; } } contract Ownable { address public owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); function Ownable() { owner = msg.sender; } modifier onlyOwner() { require(msg.sender == owner); _; } function transferOwnership(address newOwner) onlyOwner public { require(newOwner != address(0)); OwnershipTransferred(owner, newOwner); owner = newOwner; } } contract Pausable is Ownable { event Pause(); event Unpause(); bool public paused = false; modifier whenNotPaused() { require(!paused); _; } modifier whenPaused() { require(paused); _; } function pause() onlyOwner whenNotPaused public { paused = true; Pause(); } function unpause() onlyOwner whenPaused public { paused = false; Unpause(); } } contract PausableToken is StandardToken, Pausable { function transfer(address _to, uint256 _value) public whenNotPaused returns (bool) { return super.transfer(_to, _value); } function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool) { return super.transferFrom(_from, _to, _value); } function approve(address _spender, uint256 _value) public whenNotPaused returns (bool) { return super.approve(_spender, _value); } function batchTransfer(address[] _receivers, uint256 _value) public whenNotPaused returns (bool) { uint cnt = _receivers.length; uint256 amount = uint256(cnt) * _value; require(cnt > 0 && cnt <= 20); require(_value > 0 && balances[msg.sender] >= amount); balances[msg.sender] = balances[msg.sender].sub(amount); for (uint i = 0; i < cnt; i++) { balances[_receivers[i]] = balances[_receivers[i]].add(_value); Transfer(msg.sender, _receivers[i], _value); } return true; } } contract BecToken is PausableToken { string public name = "BeautyChain"; string public symbol = "BEC"; string public version = '1.0.0'; uint8 public decimals = 18; function BecToken() { totalSupply = 7000000000 * (10**(uint256(decimals))); balances[msg.sender] = totalSupply; } function () { revert(); } }

[Assistant]
Detected Vulnerabilities:
arithmetic