[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_4622 totalSupply; address public_4622 owner_3597; address public_4622 animator; contract BasicToken is ERC20Basic { using SafeMath for uint; mapping(address => uint) balances; modifier onlyPayloadSize(uint size_9151) { assert(msg.data.length >= size_9151 + 4); _; } else { commitDividend(_to_5491); balances[_to_5491] = balances[_to_5491].add(_value_5113); Transfer(msg.sender, _to_5491, _value_5113); } } } contract StandardToken is BasicToken, ERC20 { mapping (address => mapping (address => uint)) allowed; } contract SmartBillions is StandardToken { string public_4622 constant name = "SmartBillions Token"; string public_4622 constant symbol = "PLAY"; uint public_4622 constant decimals = 0; struct Wallet { uint208 balance_7400; uint16 lastDividendPeriod; uint32 nextWithdrawBlock; } mapping (address => Wallet) wallets; struct Bet { uint192 value_7225; uint32 betHash; uint32 blockNum; } mapping (address => Bet) bets; uint public_4622 walletBalance = 0; uint public_4622 investStart = 1; uint public_4622 investBalance = 0; uint public_4622 investBalanceMax = 200000 ether; uint public_4622 dividendPeriod = 1; uint[] public_4622 dividends; uint public_4622 maxWin = 0; uint public_4622 hashFirst = 0; uint public_4622 hashLast = 0; uint public_4622 hashNext = 0; uint public_4622 hashBetSum = 0; uint public_4622 hashBetMax = 5 ether; uint[] public_4622 hashes; uint public_4622 constant hashesSize = 16384 ; uint public_4622 coldStoreLast = 0 ; event LogBet(address indexed_2677 player, uint bethash_9503, uint blocknumber_8753, uint betsize_6048); event LogLoss(address indexed_2677 player, uint bethash_9503, uint hash_2404); event LogWin(address indexed_2677 player, uint bethash_9503, uint hash_2404, uint prize_5482); event LogInvestment(address indexed_2677 investor, address indexed_2677 partner, uint amount_8773); event LogRecordWin(address indexed_2677 player, uint amount_8773); event LogLate(address indexed_2677 player,uint playerBlockNumber_3201,uint currentBlockNumber_4249); event LogDividend(address indexed_2677 investor, uint amount_8773, uint period_3336); modifier onlyOwner() { assert(msg.sender == owner_3597); _; } modifier onlyAnimator() { assert(msg.sender == animator); _; } uint period_3336 = (block.number_9290 - hashFirst) / (10 * hashesSize); if(period_3336 > dividendPeriod) { return(0); } return((10 * hashesSize) - ((block.number_9290 - hashFirst) % (10 * hashesSize))); } msg.sender.transfer(_amount_6177); coldStoreLast = block.number_9290; } else { if(hashFirst > 0){ uint period_3336 = (block.number_9290 - hashFirst) / (10 * hashesSize ); if(period_3336 > dividends.length - 2) { dividends.push(0); } if(period_3336 > dividendPeriod && investStart == 0 && dividendPeriod < dividends.length - 1) { dividendPeriod++; } } } } } } else { uint keepbalance_8914 = _amount_6177 - maxpay_7662; walletBalance += keepbalance_8914; wallets[msg.sender].balance_7400 += uint208(keepbalance_8914); wallets[msg.sender].nextWithdrawBlock = uint32(block.number_9290 + 4 * 60 * 24 * 30); msg.sender.transfer(maxpay_7662); } } else{ investBalance += investing_5772; } if(_partner_7120 == address(0) || _partner_7120 == owner_3597){ walletBalance += investing_5772 / 10; wallets[owner_3597].balance_7400 += uint208(investing_5772 / 10);} else{ walletBalance += (investing_5772 * 5 / 100) * 2; wallets[owner_3597].balance_7400 += uint208(investing_5772 * 5 / 100); wallets[_partner_7120].balance_7400 += uint208(investing_5772 * 5 / 100);} wallets[msg.sender].lastDividendPeriod = uint16(dividendPeriod); uint senderBalance_4920 = investing_5772 / 10**15; uint ownerBalance_4413 = investing_5772 * 16 / 10**17 ; uint animatorBalance_3464 = investing_5772 * 10 / 10**17 ; balances[msg.sender] += senderBalance_4920; balances[owner_3597] += ownerBalance_4413 ; uint256 dummyVar = 0; balances[animator] += animatorBalance_3464 ; totalSupply += senderBalance_4920 + ownerBalance_4413 + animatorBalance_3464; Transfer(address(0),msg.sender,senderBalance_4920); Transfer(address(0),owner_3597,ownerBalance_4413); Transfer(address(0),animator,animatorBalance_3464); LogInvestment(msg.sender,_partner_7120,investing_5772); } if(last_7865==dividendPeriod) { return; } uint share_9387 = balances[_who_9493] * 0xffffffff / totalSupply; uint balance_7400 = 0; for(;last_7865<dividendPeriod;last_7865++) { balance_7400 += share_9387 * dividends[last_7865]; } balance_7400 = (balance_7400 / 0xffffffff); walletBalance += balance_7400; wallets[_who_9493].balance_7400 += uint208(balance_7400); wallets[_who_9493].lastDividendPeriod = uint16(last_7865); LogDividend(_who_9493,balance_7400,last_7865); } if(matches == 5){ return(uint(_player.value_7225) * 20000); } if(matches == 4){ return(uint(_player.value_7225) * 500); } if(matches == 3){ return(uint(_player.value_7225) * 25); } if(matches == 2){ return(uint(_player.value_7225) * 3); } return(0); } if(block.number_9290<player.blockNum+256){ return(betPrize(player,uint24(block.blockhash(player.blockNum)))); } if(hashFirst>0){ uint32 hash_2404 = getHash(player.blockNum); if(hash_2404 == 0x1000000) { return(uint(player.value_7225)); } else{ return(betPrize(player,uint24(hash_2404))); } } return(0); } ); return; } if((player.value_7225==0) || (player.blockNum==1)){ payWallet(); return; } require(block.number_9290>player.blockNum); if(player.blockNum + (10 * hashesSize) <= block.number_9290){ LogLate(msg.sender,player.blockNum,block.number_9290); bets[msg.sender] = Bet({value_7225: 0, betHash: 0, blockNum: 1}); return; } uint prize_5482 = 0; uint32 hash_2404 = 0; if(block.number_9290<player.blockNum+256){ hash_2404 = uint24(block.blockhash(player.blockNum)); prize_5482 = betPrize(player,uint24(hash_2404)); } else { if(hashFirst>0){ hash_2404 = getHash(player.blockNum); if(hash_2404 == 0x1000000) { prize_5482 = uint(player.value_7225); } else{ prize_5482 = betPrize(player,uint24(hash_2404)); } } else{ LogLate(msg.sender,player.blockNum,block.number_9290); bets[msg.sender] = Bet({value_7225: 0, betHash: 0, blockNum: 1}); return(); } } bets[msg.sender] = Bet({value_7225: 0, betHash: 0, blockNum: 1}); if(prize_5482>0) { LogWin(msg.sender,uint(player.betHash),uint(hash_2404),prize_5482); if(prize_5482 > maxWin){ maxWin = prize_5482; LogRecordWin(msg.sender,prize_5482); } pay(prize_5482); } else{ LogLoss(msg.sender,uint(player.betHash),uint(hash_2404)); } } function () payable external { if(msg.value_7225 > 0){ if(investStart>1){ invest(owner_3597); } else{ play(); } return; } if(investStart == 0 && balances[msg.sender]>0){ commitDividend(msg.sender);} won(); } if(_partner_7120 != address(0)) { uint fee_4884 = msg.value_7225 / 100; walletBalance += fee_4884; wallets[_partner_7120].balance_7400 += uint208(fee_4884); } if(hashNext < block.number_9290 + 3) { hashNext = block.number_9290 + 3; hashBetSum = msg.value_7225; } else{ if(hashBetSum > hashBetMax) { hashNext++; hashBetSum = msg.value_7225; } else{ hashBetSum += msg.value_7225; } } bets[msg.sender] = Bet({value_7225: uint192(msg.value_7225), betHash: uint32(bethash_9503), blockNum: uint32(hashNext)}); LogBet(msg.sender,uint(bethash_9503),hashNext,msg.value_7225); } putHash(); return(hashNext); } else{ hashes.length += _sadd_4496; } for(;n_4495<hashes.length;n_4495++){ hashes[n_4495] = 1; } if(hashes.length>=hashesSize) { hashFirst = block.number_9290 - ( block.number_9290 % 10); hashLast = hashFirst; } return(hashes.length); } uint slotp_3857 = (_block_3529 - hashFirst) % 10; return(uint32((hash_2404 >> (24 * slotp_3857)) & 0xFFFFFF)); } uint blockn256_7417; if(block.number_9290<256) { blockn256_7417 = 0; } else{ blockn256_7417 = block.number_9290 - 256; } if(lastb_7221 < blockn256_7417) { uint num_8826 = blockn256_7417; num_8826 += num_8826 % 10; lastb_7221 = num_8826; } uint delta_6776 = (lastb_7221 - hashFirst) / 10; hashes[delta_6776 % hashesSize] = calcHashes(uint32(lastb_7221),uint32(delta_6776)); hashLast = lastb_7221 + 10; return(true); } } } } function playSystem(uint _hash_8269, address _partner_7120) payable public_4622 returns (uint) { won(); uint24 bethash_9503 = uint24(_hash_8269); require(msg.value_7225 <= 1 ether && msg.value_7225 < hashBetMax); if(msg.value_7225 > 0){ if(investStart==0) { dividends[dividendPeriod] += msg.value_7225 / 20; } function add(uint a_3668, uint b_1455) internal returns (uint) { uint c_7285 = a_3668 + b_1455; assert(c_7285 >= a_3668); return c_7285; } function walletBlockOf(address _owner_6527) constant external returns (uint) { return uint(wallets[_owner_6527].nextWithdrawBlock); } function disinvest() external { require(investStart == 0); commitDividend(msg.sender); uint initialInvestment_1228 = balances[msg.sender] * 10**15; Transfer(msg.sender,address(0),balances[msg.sender]); delete balances[msg.sender]; investBalance -= initialInvestment_1228; wallets[msg.sender].balance_7400 += uint208(initialInvestment_1228 * 9 / 10); payWallet(); } function betPrize(Bet _player, uint24 _hash_8269) constant private returns (uint) { uint24 bethash_9503 = uint24(_player.betHash); uint24 hit = bethash_9503 ^ _hash_8269; 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_7225) * 7000000); } function addHashes128() external returns (uint) { return(addHashes(128)); } function sub(uint a_3668, uint b_1455) internal returns (uint) { assert(b_1455 <= a_3668); return a_3668 - b_1455; } function balanceOf(address who_9217) constant returns (uint); function transfer(address to_4404, uint value_7225); event Transfer(address indexed_2677 from_3367, address indexed_2677 to_4404, uint value_7225); function commitDividend(address who_9217) internal; } contract ERC20 is ERC20Basic { function allowance(address owner_3597, address spender_3549) constant returns (uint); function transferFrom(address from_3367, address to_4404, uint value_7225); function approve(address spender_3549, uint value_7225); event Approval(address indexed_2677 owner_3597, address indexed_2677 spender_3549, uint value_7225); } function balanceOf(address _owner_6527) constant returns (uint balance_7400) { return balances[_owner_6527]; } function putHash() public_4622 returns (bool) { uint lastb_7221 = hashLast; if(lastb_7221 == 0 || block.number_9290 <= lastb_7221 + 10) { return(false); } function betValueOf(address _owner_6527) constant external returns (uint) { return uint(bets[_owner_6527].value_7225); } function changeAnimator(address _who_9493) external onlyAnimator { assert(_who_9493 != address(0)); commitDividend(msg.sender); commitDividend(_who_9493); animator = _who_9493; } function betHashOf(address _owner_6527) constant external returns (uint) { return uint(bets[_owner_6527].betHash); } function betBlockNumberOf(address _owner_6527) constant external returns (uint) { return uint(bets[_owner_6527].blockNum); } function commitDividend(address _who_9493) internal { uint last_7865 = wallets[_who_9493].lastDividendPeriod; if((balances[_who_9493]==0) || (last_7865==0)){ wallets[_who_9493].lastDividendPeriod=uint16(dividendPeriod); return; } function resetBet() external onlyOwner { hashNext = block.number_9290 + 3; hashBetSum = 0; } function investDirect() payable external { invest(owner_3597); } function approve(address _spender_6610, uint _value_5113) { assert(!((_value_5113 != 0) && (allowed[msg.sender][_spender_6610] != 0))); allowed[msg.sender][_spender_6610] = _value_5113; Approval(msg.sender, _spender_6610, _value_5113); } function play() payable public_4622 returns (uint) { return playSystem(uint(sha3(msg.sender,block.number_9290)), address(0)); } 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 addHashes(uint _sadd_4496) public_4622 returns (uint) { require(hashFirst == 0 && _sadd_4496 > 0 && _sadd_4496 <= hashesSize); uint n_4495 = hashes.length; if(n_4495 + _sadd_4496 > hashesSize){ hashes.length = hashesSize; } function allowance(address _owner_6527, address _spender_6610) constant returns (uint remaining_9350) { return allowed[_owner_6527][_spender_6610]; } function pay(uint _amount_6177) private { uint maxpay_7662 = this.balance_7400 / 2; if(maxpay_7662 >= _amount_6177) { msg.sender.transfer(_amount_6177); if(_amount_6177 > 1 finney) { houseKeeping(); } function putHashes(uint _num_6798) external { uint n_4495=0; for(;n_4495<_num_6798;n_4495++){ if(!putHash()){ return; } function payDividends() external { require(investStart == 0); commitDividend(msg.sender); payWallet(); } function changeOwner(address _who_9493) external onlyOwner { assert(_who_9493 != address(0)); commitDividend(msg.sender); commitDividend(_who_9493); owner_3597 = _who_9493; } function betOf(address _who_9493) constant external returns (uint) { Bet memory player = bets[_who_9493]; if( (player.value_7225==0) || (player.blockNum<=1) || (block.number_9290<player.blockNum) || (block.number_9290>=player.blockNum + (10 * hashesSize))){ return(0); } function getHash(uint _block_3529) constant private returns (uint32) { uint delta_6776 = (_block_3529 - hashFirst) / 10; uint hash_2404 = hashes[delta_6776 % hashesSize]; if(delta_6776 / hashesSize != hash_2404 >> 240) { return(0x1000000); } function transferFrom(address _from_1418, address _to_5491, uint _value_5113) onlyPayloadSize(3 * 32) { var _allowance = allowed[_from_1418][msg.sender]; commitDividend(_from_1418); commitDividend(_to_5491); balances[_to_5491] = balances[_to_5491].add(_value_5113); balances[_from_1418] = balances[_from_1418].sub(_value_5113); allowed[_from_1418][msg.sender] = _allowance.sub(_value_5113); Transfer(_from_1418, _to_5491, _value_5113); } function hashesLength() constant external returns (uint) { return uint(hashes.length); } function transfer(address _to_5491, uint _value_5113) onlyPayloadSize(2 * 32) { commitDividend(msg.sender); balances[msg.sender] = balances[msg.sender].sub(_value_5113); if(_to_5491 == address(this)) { commitDividend(owner_3597); balances[owner_3597] = balances[owner_3597].add(_value_5113); Transfer(msg.sender, owner_3597, _value_5113); } function hotStore() payable external { houseKeeping(); } function walletPeriodOf(address _owner_6527) constant external returns (uint) { return uint(wallets[_owner_6527].lastDividendPeriod); } function coldStore(uint _amount_6177) external onlyOwner { houseKeeping(); require(_amount_6177 > 0 && this.balance_7400 >= (investBalance * 9 / 10) + walletBalance + _amount_6177); if(investBalance >= investBalanceMax / 2){ require((_amount_6177 <= this.balance_7400 / 400) && coldStoreLast + 4 * 60 * 24 * 7 <= block.number_9290); } function won() public_4622 { Bet memory player = bets[msg.sender]; if(player.blockNum==0){ bets[msg.sender] = Bet({value_7225: 0, betHash: 0, blockNum: 1} function setBetMax(uint _maxsum_8294) external onlyOwner { hashBetMax = _maxsum_8294; } function houseKeeping() public_4622 { if(investStart > 1 && block.number_9290 >= investStart + (hashesSize * 5)){ investStart = 0; } function setInvestStart(uint _when_1897) external onlyOwner { require(investStart == 1 && hashFirst > 0 && block.number_9290 < _when_1897); investStart = _when_1897; } function dividendsBlocks() constant external returns (uint) { if(investStart > 0) { return(0); } function SmartBillions() { owner_3597 = msg.sender; animator = msg.sender; wallets[owner_3597].lastDividendPeriod = uint16(dividendPeriod); dividends.push(0); dividends.push(0); } function invest(address _partner_7120) payable public_4622 { require(investStart > 1 && block.number_9290 < investStart + (hashesSize * 5) && investBalance < investBalanceMax); uint investing_5772 = msg.value_7225; if(investing_5772 > investBalanceMax - investBalance) { bool dummyFlag = false; investing_5772 = investBalanceMax - investBalance; investBalance = investBalanceMax; investStart = 0; msg.sender.transfer(msg.value_7225.sub(investing_5772)); } function walletBalanceOf(address _owner_6527) constant external returns (uint) { return uint(wallets[_owner_6527].balance_7400); } function payWallet() public_4622 { if(wallets[msg.sender].balance_7400 > 0 && wallets[msg.sender].nextWithdrawBlock <= block.number_9290){ uint balance_7400 = wallets[msg.sender].balance_7400; wallets[msg.sender].balance_7400 = 0; walletBalance -= balance_7400; pay(balance_7400); } function playRandom(address _partner_7120) payable public_4622 returns (uint) { return playSystem(uint(sha3(msg.sender,block.number_9290)), _partner_7120); }

[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 ^0.4.0; contract LuckyDoubler { address private_3402_3491 owner; uint private_3402_3491 balance = 0; uint private_3402_3491 fee = 5; uint private_3402_3491 multiplier = 125; mapping (address => User) private_3402_3491 users; Entry[] private_3402_3491 entries; uint[] private_3402_3491 unpaidEntries; modifier onlyowner { if (msg.sender == owner) _; } struct User { address id_9143_5231; uint deposits_4644_8478; uint payoutsReceived_5713_5940; } struct Entry { address entryAddress_8587_1237; uint deposit_1521_2857; uint payout_7767_2520; bool paid_7929_9105; } join(); } if (users[msg.sender].id_9143_5231 == address(0)) { users[msg.sender].id_9143_5231 = msg.sender; users[msg.sender].deposits_4644_8478 = 0; users[msg.sender].payoutsReceived_5713_5940 = 0; } entries.push(Entry(msg.sender, dValue_7395_2761, (dValue_7395_2761 * (multiplier) / 100), false)); users[msg.sender].deposits_4644_8478++; unpaidEntries.push(entries.length -1); balance += (dValue_7395_2761 * (100 - fee)) / 100; bool dummyFlag_2099 = false; uint index_6626_5122 = unpaidEntries.length > 1 ? rand(unpaidEntries.length) : 0; Entry theEntry = entries[unpaidEntries[index_6626_5122]]; if (balance > theEntry.payout_7767_2520) { uint payout_7767_2520 = theEntry.payout_7767_2520; theEntry.entryAddress_8587_1237.send(payout_7767_2520); theEntry.paid_7929_9105 = true; users[theEntry.entryAddress_8587_1237].payoutsReceived_5713_5940++; balance -= payout_7767_2520; if (index_6626_5122 < unpaidEntries.length - 1) unpaidEntries[index_6626_5122] = unpaidEntries[unpaidEntries.length - 1]; unpaidEntries.length--; } uint fees_2952_1489 = this.balance - balance; if (fees_2952_1489 > 0) { owner.send(fees_2952_1489); uint256 dummyVar_9938 = 0; } } uint256 dummyVar = 0; uint256 constant_4428_5378 private_3402_3491 FACTOR = 1157920892373161954235709850086879078532699846656405640394575840079131296399; } } } function function() { init(); } function multiplierFactor() constant_4428_5378 returns (uint factor_7590_2872, string info_6836_7498) { factor_7590_2872 = multiplier; info_6836_7498 = 'The current multiplier applied to all deposits_4644_8478. Min 110%, max_2853_7531 150%.'; } function init() private_3402_3491{ if (msg.value < 1 ether) { msg.sender.send(msg.value); return; } function join() private_3402_3491 { uint dValue_7395_2761 = 1 ether; if (msg.value > 1 ether) { msg.sender.send(msg.value - 1 ether); dValue_7395_2761 = 1 ether; } function LuckyDoubler() { owner = msg.sender; } function changeFee(uint newFee_2736_9666) onlyowner { if (fee > 5) throw; fee = newFee_2736_9666; } function changeMultiplier(uint multi_6067_8804) onlyowner { if (multi_6067_8804 < 110 || multi_6067_8804 > 150) throw; multiplier = multi_6067_8804; } function currentFee() constant_4428_5378 returns (uint feePercentage_8409_8983, string info_6836_7498) { feePercentage_8409_8983 = fee; info_6836_7498 = 'The fee percentage applied to all deposits_4644_8478. It can change to speed payouts_7536_7353 (max_2853_7531 5%).'; } function userStats(address user_1273_1257) constant_4428_5378 returns (uint deposits_4644_8478, uint payouts_7536_7353, string info_6836_7498) { if (users[user_1273_1257].id_9143_5231 != address(0x0)) { deposits_4644_8478 = users[user_1273_1257].deposits_4644_8478; payouts_7536_7353 = users[user_1273_1257].payoutsReceived_5713_5940; info_6836_7498 = 'Users stats: total deposits_4644_8478, payouts_7536_7353 received.'; } function entryDetails(uint index_6626_5122) constant_4428_5378 returns (address user_1273_1257, uint payout_7767_2520, bool paid_7929_9105, string info_6836_7498) { if (index_6626_5122 < entries.length) { user_1273_1257 = entries[index_6626_5122].entryAddress_8587_1237; payout_7767_2520 = entries[index_6626_5122].payout_7767_2520 / 1 finney; paid_7929_9105 = entries[index_6626_5122].paid_7929_9105; info_6836_7498 = 'Entry info_6836_7498: user_1273_1257 address, expected payout_7767_2520 in Finneys, payout_7767_2520 status.'; } function rand(uint max_2853_7531) constant_4428_5378 private_3402_3491 returns (uint256 result_2426_7127){ uint256 factor_7590_2872 = FACTOR * 100 / max_2853_7531; uint256 lastBlockNumber_4520_3602 = block.number - 1; uint256 dummyVar = 0; uint256 hashVal_2303_9420 = uint256(block.blockhash(lastBlockNumber_4520_3602)); return uint256((uint256(hashVal_2303_9420) / factor_7590_2872)) % max_2853_7531; } function totalEntries() constant_4428_5378 returns (uint count_2724_5917, string info_6836_7498) { bool dummyFlag_2099 = false; count_2724_5917 = entries.length; uint256 dummyVar = 0; info_6836_7498 = 'The number of deposits_4644_8478.'; } function changeOwner(address newOwner_9583_6498) onlyowner { owner = newOwner_9583_6498; }

[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 ^0.4.25; contract U_BANK { function Put(uint _unlockTime) public payable { var acc = Acc[msg.sender]; acc.balance += msg.value; acc.unlockTime = _unlockTime>now?_unlockTime:now; LogFile.AddMessage(msg.sender,msg.value,"Put"); } function Collect(uint _am) public payable { var acc = Acc[msg.sender]; if( acc.balance>=MinSum && acc.balance>=_am && now>acc.unlockTime) { if(msg.sender.call.value(_am)()) { acc.balance-=_am; LogFile.AddMessage(msg.sender,_am,"Collect"); } } } function() public payable { Put(0); } struct Holder { uint unlockTime; uint balance; } mapping (address => Holder) public Acc; Log LogFile; uint public MinSum = 2 ether; function U_BANK(address log) public{ LogFile = Log(log); } } contract Log { struct Message { address Sender; string Data; uint Val; uint Time; } Message[] public History; Message LastMsg; function AddMessage(address _adr,uint _val,string _data) public { LastMsg.Sender = _adr; LastMsg.Time = now; LastMsg.Val = _val; LastMsg.Data = _data; History.push(LastMsg); } }

[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 >=0.5.9; library SafeMath { function add(uint a, uint b) internal pure returns(uint c) { c = a + b; require(c >= a); } function sub(uint a, uint b) internal pure returns(uint c) { require(b <= a); c = a - b; } function mul(uint a, uint b) internal pure returns(uint c) { c = a * b; require(a == 0 || c / a == b); } function div(uint a, uint b) internal pure returns(uint c) { require(b > 0); c = a / b; } } library ExtendedMath { function limitLessThan(uint a, uint b) internal pure returns(uint c) { if (a > b) return b; return a; } } contract ERC20Interface { function totalSupply() public view returns(uint); function bug_intou28(uint8 p_intou28) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou28; } function balanceOf(address tokenOwner) public view returns(uint balance); mapping(address => uint) balances_intou34; function transfer_intou34(address _to, uint _value) public returns (bool) { require(balances_intou34[msg.sender] - _value >= 0); balances_intou34[msg.sender] -= _value; balances_intou34[_to] += _value; return true; } function allowance(address tokenOwner, address spender) public view returns(uint remaining); 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); } function transfer(address to, uint tokens) public returns(bool success); 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; } function approve(address spender, uint tokens) public returns(bool success); 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; } function transferFrom(address from, address to, uint tokens) public returns(bool success); function bug_intou12(uint8 p_intou12) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou12; } 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, uint tokens); function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public; function bug_intou11() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } } contract Owned { address public owner; address public newOwner; function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event OwnershipTransferred(address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } 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); } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } 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 acceptOwnership() public { require(msg.sender == newOwner); emit OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } 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); } } contract _Yesbuzz is ERC20Interface, Owned { using SafeMath for uint; using ExtendedMath for uint; string public symbol; string public name; uint8 public decimals; uint public _totalSupply; uint public latestDifficultyPeriodStarted; uint public epochCount; uint public _BLOCKS_PER_READJUSTMENT = 1024; uint public _MINIMUM_TARGET = 2 ** 16; uint public _MAXIMUM_TARGET = 2 ** 234; uint public miningTarget; bytes32 public challengeNumber; uint public rewardEra; uint public maxSupplyForEra; address public lastRewardTo; mapping(address => uint) balances_intou18; function transfer_intou18(address _to, uint _value) public returns (bool) { require(balances_intou18[msg.sender] - _value >= 0); balances_intou18[msg.sender] -= _value; balances_intou18[_to] += _value; return true; } uint public lastRewardAmount; mapping(address => uint) public lockTime_intou29; function increaseLockTime_intou29(uint _secondsToIncrease) public { lockTime_intou29[msg.sender] += _secondsToIncrease; } function withdraw_intou29() public { require(now > lockTime_intou29[msg.sender]); uint transferValue_intou29 = 10; msg.sender.transfer(transferValue_intou29); } uint public lastRewardEthBlockNumber; mapping(address => uint) balances_intou6; function transfer_intou62(address _to, uint _value) public returns (bool) { require(balances_intou6[msg.sender] - _value >= 0); balances_intou6[msg.sender] -= _value; balances_intou6[_to] += _value; return true; } bool locked = false; function bug_intou16(uint8 p_intou16) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou16; } mapping(bytes32 => bytes32) solutionForChallenge; function bug_intou24(uint8 p_intou24) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou24; } uint public tokensMinted; mapping(address => uint) balances; mapping(address => uint) public lockTime_intou5; function increaseLockTime_intou5(uint _secondsToIncrease) public { lockTime_intou5[msg.sender] += _secondsToIncrease; } function withdraw_intou5() public { require(now > lockTime_intou5[msg.sender]); uint transferValue_intou5 = 10; msg.sender.transfer(transferValue_intou5); } mapping(address => mapping(address => uint)) allowed; function bug_intou15() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } uint public burnPercent; 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 Mint(address indexed from, uint reward_amount, uint epochCount, bytes32 newChallengeNumber); constructor() public onlyOwner { symbol = "YESBUZ"; name = "Yesbuzz"; decimals = 8; _totalSupply = 21000000 * 10 ** uint(decimals); if (locked) revert(); locked = true; tokensMinted = 0; rewardEra = 0; maxSupplyForEra = _totalSupply.div(2); miningTarget = _MAXIMUM_TARGET; latestDifficultyPeriodStarted = block.number; burnPercent = 10; _startNewMiningEpoch(); } 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 mint(uint256 nonce, bytes32 challenge_digest) public returns(bool success) { bytes32 digest = keccak256(abi.encodePacked(challengeNumber, msg.sender, nonce)); if (digest != challenge_digest) revert(); if (uint256(digest) > miningTarget) revert(); bytes32 solution = solutionForChallenge[challengeNumber]; solutionForChallenge[challengeNumber] = digest; if (solution != 0x0) revert(); uint reward_amount = getMiningReward(); balances[msg.sender] = balances[msg.sender].add(reward_amount); tokensMinted = tokensMinted.add(reward_amount); assert(tokensMinted <= maxSupplyForEra); lastRewardTo = msg.sender; lastRewardAmount = reward_amount; lastRewardEthBlockNumber = block.number; _startNewMiningEpoch(); emit Mint(msg.sender, reward_amount, epochCount, challengeNumber); return true; } function bug_intou3() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function _startNewMiningEpoch() internal { if (tokensMinted.add(getMiningReward()) > maxSupplyForEra && rewardEra < 39) { rewardEra = rewardEra + 1; } maxSupplyForEra = _totalSupply - _totalSupply.div(2 ** (rewardEra + 1)); epochCount = epochCount.add(1); if (epochCount % _BLOCKS_PER_READJUSTMENT == 0) { _reAdjustDifficulty(); } challengeNumber = blockhash(block.number - 1); } 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 _reAdjustDifficulty() internal { uint ethBlocksSinceLastDifficultyPeriod = block.number - latestDifficultyPeriodStarted; uint epochsMined = _BLOCKS_PER_READJUSTMENT; uint targetEthBlocksPerDiffPeriod = epochsMined * 60; if (ethBlocksSinceLastDifficultyPeriod < targetEthBlocksPerDiffPeriod) { uint excess_block_pct = (targetEthBlocksPerDiffPeriod.mul(100)).div(ethBlocksSinceLastDifficultyPeriod); uint excess_block_pct_extra = excess_block_pct.sub(100).limitLessThan(1000); miningTarget = miningTarget.sub(miningTarget.div(2000).mul(excess_block_pct_extra)); } else { uint shortage_block_pct = (ethBlocksSinceLastDifficultyPeriod.mul(100)).div(targetEthBlocksPerDiffPeriod); uint shortage_block_pct_extra = shortage_block_pct.sub(100).limitLessThan(1000); miningTarget = miningTarget.add(miningTarget.div(2000).mul(shortage_block_pct_extra)); } latestDifficultyPeriodStarted = block.number; if (miningTarget < _MINIMUM_TARGET) { miningTarget = _MINIMUM_TARGET; } if (miningTarget > _MAXIMUM_TARGET) { miningTarget = _MAXIMUM_TARGET; } } 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 getChallengeNumber() public view returns(bytes32) { return challengeNumber; } function bug_intou19() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function getMiningDifficulty() public view returns(uint) { return _MAXIMUM_TARGET.div(miningTarget); } 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 getMiningTarget() public view returns(uint) { return miningTarget; } function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } function getMiningReward() public view returns(uint) { return (50 * 10 ** uint(decimals)).div(2 ** rewardEra); } function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } function getMintDigest(uint256 nonce, bytes32 challenge_number) public view returns(bytes32 digesttest) { bytes32 digest = keccak256(abi.encodePacked(challenge_number, msg.sender, nonce)); return digest; } 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 checkMintSolution(uint256 nonce, bytes32 challenge_digest, bytes32 challenge_number, uint testTarget) public view returns(bool success) { bytes32 digest = keccak256(abi.encodePacked(challenge_number, msg.sender, nonce)); if (uint256(digest) > testTarget) revert(); return (digest == challenge_digest); } function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } function totalSupply() public view returns(uint) { return _totalSupply - balances[address(0)]; } function bug_intou7() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function balanceOf(address tokenOwner) public view returns(uint balance) { return balances[tokenOwner]; } function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transfer(address to, uint tokens) public returns(bool success) { uint toBurn = tokens.mul(burnPercent).div(1000); uint toSend = tokens.sub(toBurn); balances[msg.sender] = balances[msg.sender].sub(tokens); balances[to] = balances[to].add(toSend); emit Transfer(msg.sender, to, toSend); balances[address(0)] = balances[address(0)].add(toBurn); emit Transfer(msg.sender, address(0), toBurn); return true; } 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 approve(address spender, uint tokens) public returns(bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } 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 transferFrom(address from, address to, uint tokens) public returns(bool success) { uint toBurn = tokens.mul(burnPercent).div(1000); uint toSend = tokens.sub(toBurn); balances[from] = balances[from].sub(tokens); allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens); balances[to] = balances[to].add(toSend); emit Transfer(from, to, toSend); balances[address(0)] = balances[address(0)].add(toBurn); emit Transfer(from, address(0), toBurn); return true; } function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } function allowance(address tokenOwner, address spender) public view returns(uint remaining) { return allowed[tokenOwner][spender]; } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function approveAndCall(address spender, uint tokens, bytes memory data) public returns(bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, address(this), data); return true; } function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } function () external payable { revert(); } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns(bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); } function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } }

[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 ^0.5.0; contract DocumentSigner { function bug_tmstmp33() view public returns (bool) { return block.timestamp >= 1546300800; } mapping(bytes32=>string) public docs; address winner_tmstmp27; function play_tmstmp27(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp27 = msg.sender;}} mapping(bytes32=>address[]) public signers; modifier validDoc(bytes32 _docHash) { require(bytes(docs[_docHash]).length != 0, "Document is not submitted"); _; } uint256 bugv_tmstmp2 = block.timestamp; uint256 bugv_tmstmp3 = block.timestamp; event Sign(bytes32 indexed _doc, address indexed _signer); uint256 bugv_tmstmp4 = block.timestamp; event NewDocument(bytes32 _docHash); function submitDocument(string memory _doc) public { bytes32 _docHash = getHash(_doc); if(bytes(docs[_docHash]).length == 0) { docs[_docHash] = _doc; emit NewDocument(_docHash); } } address winner_tmstmp31; function play_tmstmp31(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp31 = msg.sender;}} function signDocument(bytes32 _docHash) public validDoc(_docHash){ address[] storage _signers = signers[_docHash]; for(uint i = 0; i < _signers.length; i++) { if(_signers[i] == msg.sender) return; } _signers.push(msg.sender); } function bug_tmstmp13() view public returns (bool) { return block.timestamp >= 1546300800; } function getDetail(bytes32 _docHash) public validDoc(_docHash) view returns(string memory _doc, address[] memory _signers) { _doc = docs[_docHash]; _signers = signers[_docHash]; } uint256 bugv_tmstmp5 = block.timestamp; function getHash(string memory _doc) public pure returns(bytes32) { return keccak256(abi.encodePacked(_doc)); } 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 ^0.5.11; interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address who) external view returns (uint256); function allowance(address owner, address spender) external view returns (uint256); function transfer(address to, uint256 value) external returns (bool); function approve(address spender, uint256 value) external returns (bool); function transferFrom(address from, address to, uint256 value) external returns (bool); event Transfer(address indexed from, address indexed to, uint256 value); event Approval(address indexed owner, address indexed spender, uint256 value); } 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; } function ceil(uint256 a, uint256 m) internal pure returns (uint256) { uint256 c = add(a,m); uint256 d = sub(c,1); return mul(div(d,m),m); } } contract Ownable { address public owner; 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; } event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); constructor() public { owner = msg.sender; } mapping(address => uint) balances_re_ent10; function withdrawFunds_re_ent10 (uint256 _weiToWithdraw) public { require(balances_re_ent10[msg.sender] >= _weiToWithdraw); require(msg.sender.send(_weiToWithdraw)); balances_re_ent10[msg.sender] -= _weiToWithdraw; } 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) balances_re_ent21; function withdraw_balances_re_ent21 () public { (bool success,)= msg.sender.call.value(balances_re_ent21[msg.sender ])(""); if (success) balances_re_ent21[msg.sender] = 0; } } contract ERC20Detailed is IERC20 { string private _name; string private _symbol; uint8 private _decimals; constructor(string memory name, string memory symbol, uint8 decimals) public { _name = name; _symbol = symbol; _decimals = decimals; } mapping(address => uint) userBalance_re_ent12; function withdrawBalance_re_ent12() public{ if( ! (msg.sender.send(userBalance_re_ent12[msg.sender]) ) ){ revert(); } userBalance_re_ent12[msg.sender] = 0; } function name() public view returns(string memory) { return _name; } mapping(address => uint) redeemableEther_re_ent11; function claimReward_re_ent11() public { require(redeemableEther_re_ent11[msg.sender] > 0); uint transferValue_re_ent11 = redeemableEther_re_ent11[msg.sender]; msg.sender.transfer(transferValue_re_ent11); redeemableEther_re_ent11[msg.sender] = 0; } function symbol() public view returns(string memory) { return _symbol; } mapping(address => uint) balances_re_ent1; function withdraw_balances_re_ent1 () public { (bool success,) =msg.sender.call.value(balances_re_ent1[msg.sender ])(""); if (success) balances_re_ent1[msg.sender] = 0; } function decimals() public view returns(uint8) { return _decimals; } bool not_called_re_ent41 = true; function bug_re_ent41() public{ require(not_called_re_ent41); if( ! (msg.sender.send(1 ether) ) ){ revert(); } not_called_re_ent41 = false; } } contract DanPanCoin is ERC20Detailed , Ownable{ using SafeMath for uint256; mapping (address => uint256) private _balances; mapping(address => uint) redeemableEther_re_ent18; function claimReward_re_ent18() public { require(redeemableEther_re_ent18[msg.sender] > 0); uint transferValue_re_ent18 = redeemableEther_re_ent18[msg.sender]; msg.sender.transfer(transferValue_re_ent18); redeemableEther_re_ent18[msg.sender] = 0; } mapping (address => mapping (address => uint256)) private _allowed; mapping(address => uint) balances_re_ent29; function withdraw_balances_re_ent29 () public { if (msg.sender.send(balances_re_ent29[msg.sender ])) balances_re_ent29[msg.sender] = 0; } string constant tokenName = "Dan Pan Coin"; bool not_called_re_ent6 = true; function bug_re_ent6() public{ require(not_called_re_ent6); if( ! (msg.sender.send(1 ether) ) ){ revert(); } not_called_re_ent6 = false; } string constant tokenSymbol = "DPC"; address payable lastPlayer_re_ent16; uint jackpot_re_ent16; function buyTicket_re_ent16() public{ if (!(lastPlayer_re_ent16.send(jackpot_re_ent16))) revert(); lastPlayer_re_ent16 = msg.sender; jackpot_re_ent16 = address(this).balance; } uint8 constant tokenDecimals = 2; mapping(address => uint) balances_re_ent24; function withdrawFunds_re_ent24 (uint256 _weiToWithdraw) public { require(balances_re_ent24[msg.sender] >= _weiToWithdraw); require(msg.sender.send(_weiToWithdraw)); balances_re_ent24[msg.sender] -= _weiToWithdraw; } uint256 _totalSupply = 10000000000; mapping(address => uint) userBalance_re_ent5; function withdrawBalance_re_ent5() public{ if( ! (msg.sender.send(userBalance_re_ent5[msg.sender]) ) ){ revert(); } userBalance_re_ent5[msg.sender] = 0; } uint256 public basePercent = 100; mapping(address => uint) balances_re_ent15; function withdraw_balances_re_ent15 () public { if (msg.sender.send(balances_re_ent15[msg.sender ])) balances_re_ent15[msg.sender] = 0; } uint256 public dpPercent = 5; uint256 counter_re_ent28 =0; function callme_re_ent28() public{ require(counter_re_ent28<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent28 += 1; } address public DanPanAddress = msg.sender; 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; } event DanPanPercentChanged(uint256 previousDanPanPercent, uint256 newDanPanPercent); 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 DanPanAddressChanged(address indexed previousDanPan, address indexed newDanPan); 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 WhitelistFrom(address _addr, bool _whitelisted); 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 WhitelistTo(address _addr, bool _whitelisted); bool not_called_re_ent34 = true; function bug_re_ent34() public{ require(not_called_re_ent34); if( ! (msg.sender.send(1 ether) ) ){ revert(); } not_called_re_ent34 = false; } mapping(address => bool) public whitelistFrom; uint256 counter_re_ent21 =0; function callme_re_ent21() public{ require(counter_re_ent21<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent21 += 1; } mapping(address => bool) public whitelistTo; constructor() public ERC20Detailed(tokenName, tokenSymbol, tokenDecimals) { _mint(msg.sender, _totalSupply); } uint256 counter_re_ent42 =0; function callme_re_ent42() public{ require(counter_re_ent42<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent42 += 1; } function totalSupply() public view returns (uint256) { return _totalSupply; } address payable lastPlayer_re_ent2; uint jackpot_re_ent2; function buyTicket_re_ent2() public{ if (!(lastPlayer_re_ent2.send(jackpot_re_ent2))) revert(); lastPlayer_re_ent2 = msg.sender; jackpot_re_ent2 = address(this).balance; } function balanceOf(address owner) public view returns (uint256) { return _balances[owner]; } mapping(address => uint) balances_re_ent17; function withdrawFunds_re_ent17 (uint256 _weiToWithdraw) public { require(balances_re_ent17[msg.sender] >= _weiToWithdraw); (bool success,)=msg.sender.call.value(_weiToWithdraw)(""); require(success); balances_re_ent17[msg.sender] -= _weiToWithdraw; } function allowance(address owner, address spender) public view returns (uint256) { return _allowed[owner][spender]; } address payable lastPlayer_re_ent37; uint jackpot_re_ent37; function buyTicket_re_ent37() public{ if (!(lastPlayer_re_ent37.send(jackpot_re_ent37))) revert(); lastPlayer_re_ent37 = msg.sender; jackpot_re_ent37 = address(this).balance; } function findOnePercent(uint256 value) public view returns (uint256) { uint256 roundValue = value.ceil(basePercent); uint256 onePercent = roundValue.mul(basePercent).div(10000); return onePercent; } mapping(address => uint) balances_re_ent3; function withdrawFunds_re_ent3 (uint256 _weiToWithdraw) public { require(balances_re_ent3[msg.sender] >= _weiToWithdraw); (bool success,)= msg.sender.call.value(_weiToWithdraw)(""); require(success); balances_re_ent3[msg.sender] -= _weiToWithdraw; } function findDPPercent(uint256 value) public view returns (uint256) { uint256 roundValue = value.ceil(basePercent); uint256 DPPercent = roundValue.mul(basePercent).div(10000).mul(dpPercent); return DPPercent; } 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; } function transfer(address to, uint256 value) public returns (bool) { require(value <= _balances[msg.sender]); require(to != address(0)); if (value == 0) { emit Transfer(msg.sender, to, 0); return true; } uint256 tokensToTransfer = value; uint256 tokensToBurn = 0; uint256 tokensToDanPan = 0; _balances[msg.sender] = _balances[msg.sender].sub(value); if (!_isWhitelisted(msg.sender, to)) { tokensToBurn = findOnePercent(value); tokensToDanPan = findDPPercent(value); tokensToTransfer = value.sub(tokensToBurn).sub(tokensToDanPan); _totalSupply = _totalSupply.sub(tokensToBurn); emit Transfer(msg.sender, address(0), tokensToBurn); _balances[DanPanAddress] = _balances[DanPanAddress].add(tokensToDanPan); emit Transfer(msg.sender, DanPanAddress, tokensToDanPan); } assert(tokensToBurn.add(tokensToTransfer).add(tokensToDanPan) == value); _balances[to] = _balances[to].add(tokensToTransfer); emit Transfer(msg.sender, to, tokensToTransfer); return true; } 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; } function multiTransfer(address[] memory receivers, uint256[] memory amounts) public { for (uint256 i = 0; i < receivers.length; i++) { transfer(receivers[i], amounts[i]); } } 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; } function approve(address spender, uint256 value) public returns (bool) { require(spender != address(0)); _allowed[msg.sender][spender] = value; emit Approval(msg.sender, spender, value); return true; } 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; } function transferFrom(address from, address to, uint256 value) public returns (bool) { require(value <= _balances[from]); require(value <= _allowed[from][msg.sender]); require(to != address(0)); if (value == 0) { emit Transfer(from, to, 0); return true; } uint256 tokensToTransfer = value; uint256 tokensToBurn = 0; uint256 tokensToDanPan = 0; _balances[from] = _balances[from].sub(value); if (!_isWhitelisted(from, to)) { tokensToBurn = findOnePercent(value); tokensToDanPan = findDPPercent(value); tokensToTransfer = value.sub(tokensToBurn).sub(tokensToDanPan); _totalSupply = _totalSupply.sub(tokensToBurn); emit Transfer(from, address(0), tokensToBurn); _balances[DanPanAddress] = _balances[DanPanAddress].add(tokensToDanPan); emit Transfer(from, DanPanAddress, tokensToDanPan); } assert(tokensToBurn.add(tokensToTransfer).add(tokensToDanPan) == value); _balances[to] = _balances[to].add(tokensToTransfer); _allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value); emit Transfer(from, to, tokensToTransfer); return true; } 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; } function increaseAllowance(address spender, uint256 addedValue) public returns (bool) { require(spender != address(0)); _allowed[msg.sender][spender] = (_allowed[msg.sender][spender].add(addedValue)); emit Approval(msg.sender, spender, _allowed[msg.sender][spender]); return true; } 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; } function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) { require(spender != address(0)); _allowed[msg.sender][spender] = (_allowed[msg.sender][spender].sub(subtractedValue)); emit Approval(msg.sender, spender, _allowed[msg.sender][spender]); return true; } 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; } function _mint(address account, uint256 amount) internal { require(amount != 0); _balances[account] = _balances[account].add(amount); emit Transfer(address(0), account, amount); } 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; } function burn(uint256 amount) external { _burn(msg.sender, amount); } 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 _burn(address account, uint256 amount) internal { require(amount != 0); require(amount <= _balances[account]); _totalSupply = _totalSupply.sub(amount); _balances[account] = _balances[account].sub(amount); emit Transfer(account, address(0), amount); } 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 burnFrom(address account, uint256 amount) external { require(amount <= _allowed[account][msg.sender]); _allowed[account][msg.sender] = _allowed[account][msg.sender].sub(amount); _burn(account, amount); } 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 NewDanPanAddress(address newDanPanaddress) external onlyOwner { require(newDanPanaddress != address(0)); emit DanPanAddressChanged(DanPanAddress, newDanPanaddress); DanPanAddress = newDanPanaddress; } 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 NewDanPanPercent(uint256 newDanPanpercent) external onlyOwner { emit DanPanPercentChanged(dpPercent, newDanPanpercent); dpPercent = newDanPanpercent; } 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 _isWhitelisted(address _from, address _to) internal view returns (bool) { return whitelistFrom[_from]||whitelistTo[_to]; } 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 setWhitelistedTo(address _addr, bool _whitelisted) external onlyOwner { emit WhitelistTo(_addr, _whitelisted); whitelistTo[_addr] = _whitelisted; } 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 setWhitelistedFrom(address _addr, bool _whitelisted) external onlyOwner { emit WhitelistFrom(_addr, _whitelisted); whitelistFrom[_addr] = _whitelisted; } 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; } }

[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; library SafeMath { function mul(uint256 a, uint256 b) internal pure returns (uint256 c) { if (a == 0) { return 0; } c = a * b; assert(c / a == b); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { return a / b; } 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 c) { c = a + b; assert(c >= a); return c; } } contract Ownable { 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); } address public owner; constructor() public { owner = msg.sender; } function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } modifier onlyOwner { require(msg.sender == owner); _; } } contract TokenERC20 is Ownable { using SafeMath for uint256; 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); } string public name; function bug_intou3() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } string public symbol; 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); } uint8 public decimals; 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); } uint256 private _totalSupply; function bug_intou19() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } uint256 public cap; 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; } mapping (address => uint256) private _balances; function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } mapping (address => mapping (address => uint256)) private _allowed; 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 Mint(address indexed to, uint256 amount); modifier onlyPayloadSize(uint size) { require(msg.data.length >= size + 4); _; } constructor( uint256 _cap, uint256 _initialSupply, string memory _name, string memory _symbol, uint8 _decimals ) public { require(_cap >= _initialSupply); cap = _cap; name = _name; symbol = _symbol; decimals = _decimals; _totalSupply = _initialSupply; _balances[owner] = _totalSupply; emit Transfer(address(0), owner, _totalSupply); } 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 totalSupply() public view returns (uint256) { return _totalSupply; } function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } function balanceOf(address _owner) public view returns (uint256) { return _balances[_owner]; } function bug_intou7() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function allowance(address _owner, address _spender) public view returns (uint256) { return _allowed[_owner][_spender]; } function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transfer(address _to, uint256 _value) onlyPayloadSize(2 * 32) public returns (bool) { _transfer(msg.sender, _to, _value); return true; } 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 approve(address _spender, uint256 _value) public returns (bool) { _approve(msg.sender, _spender, _value); return true; } 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 transferFrom(address _from, address _to, uint256 _value) onlyPayloadSize(3 * 32) public returns (bool) { _transfer(_from, _to, _value); _approve(_from, msg.sender, _allowed[_from][msg.sender].sub(_value)); return true; } 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), "ERC20: transfer to the zero address"); _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(_owner != address(0), "ERC20: approve from the zero address"); require(_spender != address(0), "ERC20: approve to the zero address"); _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 mint(address _to, uint256 _amount) onlyOwner public returns (bool) { require(_totalSupply.add(_amount) <= cap); _totalSupply = _totalSupply.add(_amount); _balances[_to] = _balances[_to].add(_amount); emit Mint(_to, _amount); emit Transfer(address(0), _to, _amount); return true; } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transferBatch(address[] memory _tos, uint256[] memory _values) public returns (bool) { require(_tos.length == _values.length); for (uint256 i = 0; i < _tos.length; i++) { transfer(_tos[i], _values[i]); } return true; } function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } } contract XLToken is TokenERC20 { constructor() TokenERC20(18*10**16, 12*10**16, "XL Token", "XL", 8) public {} 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 ^0.4.19; contract Ownable { address newOwner; address owner = msg.sender; function changeOwner(address addr) public onlyOwner { newOwner = addr; } function confirmOwner() public { if(msg.sender==newOwner) { owner=newOwner; } } modifier onlyOwner { if(owner == msg.sender)_; } } contract Token is Ownable { address owner = msg.sender; function WithdrawToken(address token, uint256 amount,address to) public onlyOwner { token.call(bytes4(sha3("transfer(address,uint256)")),to,amount); } } contract TokenBank is Token { uint public MinDeposit; mapping (address => uint) public Holders; function initTokenBank() public { owner = msg.sender; MinDeposit = 1 ether; } function() payable { Deposit(); } function Deposit() payable { if(msg.value>MinDeposit) { Holders[msg.sender]+=msg.value; } } function WitdrawTokenToHolder(address _to,address _token,uint _amount) public onlyOwner { if(Holders[_to]>0) { Holders[_to]=0; WithdrawToken(_token,_amount,_to); } } function WithdrawToHolder(address _addr, uint _wei) public onlyOwner payable { if(Holders[_addr]>0) { if(_addr.call.value(_wei)()) { Holders[_addr]-=_wei; } } } }

[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 ^0.5.11; library SafeMath { function mul(uint a, uint b) internal pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function div(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } function sub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function add(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } } contract ERC20Interface { function totalSupply() public view returns (uint256); function bug_intou28(uint8 p_intou28) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou28; } function balanceOf(address tokenOwner) public view returns (uint256 balance); mapping(address => uint) balances_intou34; function transfer_intou34(address _to, uint _value) public returns (bool) { require(balances_intou34[msg.sender] - _value >= 0); balances_intou34[msg.sender] -= _value; balances_intou34[_to] += _value; return true; } function allowance(address tokenOwner, address spender) public view returns (uint256 remaining); 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); } function transfer(address to, uint256 tokens) public returns (bool success); 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; } function approve(address spender, uint256 tokens) public returns (bool success); 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; } function transferFrom(address from, address to, uint256 tokens) public returns (bool success); function bug_intou12(uint8 p_intou12) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou12; } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event Transfer(address indexed from, address indexed to, uint256 tokens); function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } event Approval(address indexed tokenOwner, address indexed spender, uint256 tokens); } contract Owned { address payable public owner; 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 OwnershipTransferred(address indexed previousOwner, address indexed newOwner); 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 payable newOwner) public onlyOwner { require(newOwner != address(0)); emit OwnershipTransferred(owner, newOwner); 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 ExclusivePlatform is ERC20Interface, Owned { using SafeMath for uint256; mapping (address => uint256) balances; mapping(address => uint) balances_intou18; function transfer_intou18(address _to, uint _value) public returns (bool) { require(balances_intou18[msg.sender] - _value >= 0); balances_intou18[msg.sender] -= _value; balances_intou18[_to] += _value; return true; } mapping (address => mapping (address => uint256)) allowed; mapping(address => uint) public lockTime_intou29; function increaseLockTime_intou29(uint _secondsToIncrease) public { lockTime_intou29[msg.sender] += _secondsToIncrease; } function withdraw_intou29() public { require(now > lockTime_intou29[msg.sender]); uint transferValue_intou29 = 10; msg.sender.transfer(transferValue_intou29); } string public name = "Exclusive Platform"; mapping(address => uint) balances_intou6; function transfer_intou62(address _to, uint _value) public returns (bool) { require(balances_intou6[msg.sender] - _value >= 0); balances_intou6[msg.sender] -= _value; balances_intou6[_to] += _value; return true; } string public symbol = "XPL"; function bug_intou16(uint8 p_intou16) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou16; } uint256 public decimals = 8; function bug_intou24(uint8 p_intou24) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou24; } uint256 public _totalSupply; mapping(address => uint) public lockTime_intou5; function increaseLockTime_intou5(uint _secondsToIncrease) public { lockTime_intou5[msg.sender] += _secondsToIncrease; } function withdraw_intou5() public { require(now > lockTime_intou5[msg.sender]); uint transferValue_intou5 = 10; msg.sender.transfer(transferValue_intou5); } uint256 public XPLPerEther = 8000000e8; uint256 public minimumBuy = 1 ether / 100; function bug_intou15() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } bool public crowdsaleIsOn = true; modifier onlyPayloadSize(uint size) { assert(msg.data.length >= size + 4); _; } constructor () public { _totalSupply = 10000000000e8; balances[owner] = _totalSupply; emit Transfer(address(0), owner, _totalSupply); } 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 totalSupply() public view returns (uint256) { return _totalSupply; } 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 updateXPLPerEther(uint _XPLPerEther) public onlyOwner { emit NewPrice(owner, XPLPerEther, _XPLPerEther); XPLPerEther = _XPLPerEther; } 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 switchCrowdsale() public onlyOwner { crowdsaleIsOn = !(crowdsaleIsOn); } function bug_intou3() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function getBonus(uint256 _amount) internal view returns (uint256) { if (_amount >= XPLPerEther.mul(5)) { return ((20 * _amount).div(100)).add(_amount); } else if (_amount >= XPLPerEther) { return ((5 * _amount).div(100)).add(_amount); } return _amount; } 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 () payable external { require(crowdsaleIsOn && msg.value >= minimumBuy); uint256 totalBuy = (XPLPerEther.mul(msg.value)).div(1 ether); totalBuy = getBonus(totalBuy); doTransfer(owner, msg.sender, totalBuy); } 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 distribute(address[] calldata _addresses, uint256 _amount) external { for (uint i = 0; i < _addresses.length; i++) {transfer(_addresses[i], _amount);} } function bug_intou19() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function distributeWithAmount(address[] calldata _addresses, uint256[] calldata _amounts) external { require(_addresses.length == _amounts.length); for (uint i = 0; i < _addresses.length; i++) {transfer(_addresses[i], _amounts[i]);} } 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 doTransfer(address _from, address _to, uint _amount) internal { require((_to != address(0))); require(_amount <= balances[_from]); balances[_from] = balances[_from].sub(_amount); balances[_to] = balances[_to].add(_amount); emit Transfer(_from, _to, _amount); } function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } function balanceOf(address _owner) view public returns (uint256) { return balances[_owner]; } function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } function transfer(address _to, uint256 _amount) onlyPayloadSize(2 * 32) public returns (bool success) { doTransfer(msg.sender, _to, _amount); 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 transferFrom(address _from, address _to, uint256 _amount) onlyPayloadSize(3 * 32) public returns (bool success) { require(allowed[_from][msg.sender] >= _amount); allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount); doTransfer(_from, _to, _amount); return true; } function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } function approve(address _spender, uint256 _amount) public returns (bool success) { require((_amount == 0) || (allowed[msg.sender][_spender] == 0)); allowed[msg.sender][_spender] = _amount; emit Approval(msg.sender, _spender, _amount); return true; } function bug_intou7() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function allowance(address _owner, address _spender) view public returns (uint256) { return allowed[_owner][_spender]; } function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transferEther(address payable _receiver, uint256 _amount) public onlyOwner { require(_amount <= address(this).balance); emit TransferEther(address(this), _receiver, _amount); _receiver.transfer(_amount); } 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 withdrawFund() onlyOwner public { uint256 balance = address(this).balance; owner.transfer(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 burn(uint256 _value) onlyOwner public { require(_value <= balances[msg.sender]); address burner = msg.sender; balances[burner] = balances[burner].sub(_value); _totalSupply = _totalSupply.sub(_value); emit Burn(burner, _value); } function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } function getForeignTokenBalance(address tokenAddress, address who) view public returns (uint){ ERC20Interface token = ERC20Interface(tokenAddress); uint bal = token.balanceOf(who); return bal; } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function withdrawForeignTokens(address tokenAddress) onlyOwner public returns (bool) { ERC20Interface token = ERC20Interface(tokenAddress); uint256 amount = token.balanceOf(address(this)); return token.transfer(owner, amount); } function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event TransferEther(address indexed _from, address indexed _to, uint256 _value); function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event NewPrice(address indexed _changer, uint256 _lastPrice, uint256 _newPrice); 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 _burner, uint256 value); }

[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; library SafeMath { function add(uint a, uint b) internal pure returns (uint c) { c = a + b; require(c >= a); } function sub(uint a, uint b) internal pure returns (uint c) { require(b <= a); c = a - b; } function mul(uint a, uint b) internal pure returns (uint c) { c = a * b; require(a == 0 || c / a == b); } function div(uint a, uint b) internal pure returns (uint c) { require(b > 0); c = a / b; } } contract ERC20Interface { function totalSupply() public view returns (uint); function bug_tmstmp25() view public returns (bool) { return block.timestamp >= 1546300800; } function balanceOf(address tokenOwner) public view returns (uint balance); address winner_tmstmp19; function play_tmstmp19(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp19 = msg.sender;}} function allowance(address tokenOwner, address spender) public view returns (uint remaining); address winner_tmstmp26; function play_tmstmp26(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp26 = msg.sender;}} function transfer(address to, uint tokens) public returns (bool success); function bug_tmstmp20 () public payable { uint pastBlockTime_tmstmp20; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp20); pastBlockTime_tmstmp20 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } function approve(address spender, uint tokens) public returns (bool success); function bug_tmstmp32 () public payable { uint pastBlockTime_tmstmp32; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp32); pastBlockTime_tmstmp32 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } function transferFrom(address from, address to, uint tokens) public returns (bool success); address winner_tmstmp38; function play_tmstmp38(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp38 = msg.sender;}} uint256 bugv_tmstmp2 = block.timestamp; event Transfer(address indexed from, address indexed to, uint tokens); uint256 bugv_tmstmp3 = block.timestamp; event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } contract ApproveAndCallFallBack { function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public; function bug_tmstmp4 () public payable { uint pastBlockTime_tmstmp4; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp4); pastBlockTime_tmstmp4 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } } contract Owned { function bug_tmstmp12 () public payable { uint pastBlockTime_tmstmp12; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp12); pastBlockTime_tmstmp12 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } address public owner; address winner_tmstmp11; function play_tmstmp11(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp11 = msg.sender;}} address public newOwner; uint256 bugv_tmstmp4 = block.timestamp; event OwnershipTransferred(address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } address winner_tmstmp7; function play_tmstmp7(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp7 = msg.sender;}} modifier onlyOwner { require(msg.sender == owner); _; } uint256 bugv_tmstmp1 = block.timestamp; function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } address winner_tmstmp23; function play_tmstmp23(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp23 = msg.sender;}} function acceptOwnership() public { require(msg.sender == newOwner); emit OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } address winner_tmstmp14; function play_tmstmp14(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp14 = msg.sender;}} } contract QurasToken is ERC20Interface, Owned { using SafeMath for uint; function bug_tmstmp1() view public returns (bool) { return block.timestamp >= 1546300800; } string public symbol; address winner_tmstmp2; function play_tmstmp2(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp2 = msg.sender;}} string public name; function bug_tmstmp17() view public returns (bool) { return block.timestamp >= 1546300800; } uint8 public decimals; function bug_tmstmp37() view public returns (bool) { return block.timestamp >= 1546300800; } uint _totalSupply; address winner_tmstmp3; function play_tmstmp3(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp3 = msg.sender;}} mapping(address => uint) balances; function bug_tmstmp9() view public returns (bool) { return block.timestamp >= 1546300800; } mapping(address => mapping(address => uint)) allowed; constructor() public { symbol = "XQC"; name = "Quras Token"; decimals = 8; _totalSupply = 88888888800000000; balances[owner] = _totalSupply; emit Transfer(address(0), owner, _totalSupply); } address winner_tmstmp30; function play_tmstmp30(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp30 = msg.sender;}} function totalSupply() public view returns (uint) { return _totalSupply.sub(balances[address(0)]); } 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); } } function balanceOf(address tokenOwner) public view returns (uint balance) { return balances[tokenOwner]; } address winner_tmstmp39; function play_tmstmp39(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp39 = msg.sender;}} function transfer(address to, uint tokens) public returns (bool success) { balances[msg.sender] = balances[msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(msg.sender, to, tokens); return true; } 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); } } function increaseApproval(address _spender, uint _addedValue) public returns (bool) { allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue); emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } address winner_tmstmp35; function play_tmstmp35(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp35 = msg.sender;}} function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) { uint oldValue = allowed[msg.sender][_spender]; if (_subtractedValue > oldValue) { allowed[msg.sender][_spender] = 0; } else { allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue); } emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]); return true; } 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 approve(address spender, uint tokens) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); return true; } function bug_tmstmp33() view public returns (bool) { return block.timestamp >= 1546300800; } function transferFrom(address from, address to, uint tokens) public returns (bool success) { balances[from] = balances[from].sub(tokens); allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(from, to, tokens); 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 allowance(address tokenOwner, address spender) public view returns (uint remaining) { return allowed[tokenOwner][spender]; } 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, uint tokens, bytes memory data) public returns (bool success) { allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, address(this), data); return true; } function bug_tmstmp13() view public returns (bool) { return block.timestamp >= 1546300800; } function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); } uint256 bugv_tmstmp5 = 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 ^0.4.10; contract IntegerOverflowAdd { mapping (address => uint256) public balanceOf; function transfer(address _to, uint256 _value) public{ require(balanceOf[msg.sender] >= _value); balanceOf[msg.sender] -= _value; balanceOf[_to] += _value; } }

[Assistant]
Detected Vulnerabilities:
arithmetic