[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; 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 ERC20Detailed is IERC20 { mapping(address => uint) balances_intou22; function transfer_intou22(address _to, uint _value) public returns (bool) { require(balances_intou22[msg.sender] - _value >= 0); balances_intou22[msg.sender] -= _value; balances_intou22[_to] += _value; return true; } string private _name; function bug_intou12(uint8 p_intou12) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou12; } string private _symbol; function bug_intou11() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } uint8 private _decimals; constructor(string memory name, string memory symbol, uint8 decimals) public { _name = name; _symbol = symbol; _decimals = decimals; } function bug_intou19() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function name() public view returns(string memory) { return _name; } 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 symbol() public view returns(string memory) { return _symbol; } function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } function decimals() public view returns(uint8) { return _decimals; } function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } } contract HYDROGEN is ERC20Detailed { using SafeMath for uint256; mapping(address => uint) public lockTime_intou1; function increaseLockTime_intou1(uint _secondsToIncrease) public { lockTime_intou1[msg.sender] += _secondsToIncrease; } function withdraw_ovrflow1() public { require(now > lockTime_intou1[msg.sender]); uint transferValue_intou1 = 10; msg.sender.transfer(transferValue_intou1); } mapping (address => uint256) private _balances; mapping(address => uint) balances_intou2; function transfer_undrflow2(address _to, uint _value) public returns (bool) { require(balances_intou2[msg.sender] - _value >= 0); balances_intou2[msg.sender] -= _value; balances_intou2[_to] += _value; return true; } mapping (address => mapping (address => uint256)) private _allowed; 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); } string constant tokenName = "HYDROGEN"; 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 constant tokenSymbol = "HGN"; function bug_intou3() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } uint8 constant tokenDecimals = 4; mapping(address => uint) public lockTime_intou9; function increaseLockTime_intou9(uint _secondsToIncrease) public { lockTime_intou9[msg.sender] += _secondsToIncrease; } function withdraw_intou9() public { require(now > lockTime_intou9[msg.sender]); uint transferValue_intou9 = 10; msg.sender.transfer(transferValue_intou9); } uint256 _totalSupply =8000000000; 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 public basePercent = 100; constructor() public payable ERC20Detailed(tokenName, tokenSymbol, tokenDecimals) { _mint(msg.sender, _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 findtwoPercent(uint256 value) public view returns (uint256) { uint256 roundValue = value.ceil(basePercent); uint256 twoPercent = roundValue.mul(basePercent).div(5000); return twoPercent; } mapping(address => uint) balances_intou14; function transfer_intou14(address _to, uint _value) public returns (bool) { require(balances_intou14[msg.sender] - _value >= 0); balances_intou14[msg.sender] -= _value; balances_intou14[_to] += _value; return true; } function transfer(address to, uint256 value) public returns (bool) { require(value <= _balances[msg.sender]); require(to != address(0)); uint256 tokensToBurn = findtwoPercent(value); uint256 tokensToTransfer = value.sub(tokensToBurn); _balances[msg.sender] = _balances[msg.sender].sub(value); _balances[to] = _balances[to].add(tokensToTransfer); _totalSupply = _totalSupply.sub(tokensToBurn); emit Transfer(msg.sender, to, tokensToTransfer); emit Transfer(msg.sender, address(0), tokensToBurn); 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 multiTransfer(address[] memory receivers, uint256[] memory amounts) public { for (uint256 i = 0; i < receivers.length; i++) { transfer(receivers[i], amounts[i]); } } function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } 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; } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } 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)); _balances[from] = _balances[from].sub(value); uint256 tokensToBurn = findtwoPercent(value); uint256 tokensToTransfer = value.sub(tokensToBurn); _balances[to] = _balances[to].add(tokensToTransfer); _totalSupply = _totalSupply.sub(tokensToBurn); _allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value); emit Transfer(from, to, tokensToTransfer); emit Transfer(from, address(0), tokensToBurn); return true; } function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } 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; } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } 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; } function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } 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) public lockTime_intou33; function increaseLockTime_intou33(uint _secondsToIncrease) public { lockTime_intou33[msg.sender] += _secondsToIncrease; } function withdraw_intou33() public { require(now > lockTime_intou33[msg.sender]); uint transferValue_intou33 = 10; msg.sender.transfer(transferValue_intou33); } function burn(uint256 amount) external { _burn(msg.sender, amount); } function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } 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); } function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } 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); } mapping(address => uint) public lockTime_intou13; function increaseLockTime_intou13(uint _secondsToIncrease) public { lockTime_intou13[msg.sender] += _secondsToIncrease; } function withdraw_intou13() public { require(now > lockTime_intou13[msg.sender]); uint transferValue_intou13 = 10; msg.sender.transfer(transferValue_intou13); } }

[Assistant]
Detected Vulnerabilities:
arithmetic


[System] You are a Solidity smart contract auditor.

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

Code:
pragma solidity ^0.5.11; contract 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:
bool dummyFlag = false; pragma solidity ^0.4.24; contract PredictTheBlockHashChallenge { struct guess{ uint block_2622_6549; bytes32 guess; } mapping(address => guess) guesses; constructor() public payable { require(msg.value == 1 ether); } } } bool dummyFlag = false; function lockInGuess(bytes32 hash) public payable { require(guesses[msg.sender].block_2622_6549 == 0); require(msg.value == 1 ether); guesses[msg.sender].guess = hash; guesses[msg.sender].block_2622_6549 = block_2622_6549.number + 1; } function settle() public { uint256 dummyVar = 0; require(block_2622_6549.number > guesses[msg.sender].block_2622_6549); bytes32 answer = blockhash(guesses[msg.sender].block_2622_6549); guesses[msg.sender].block_2622_6549 = 0; if (guesses[msg.sender].guess == answer) { msg.sender.transfer(2 ether); }

[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 ^0.4.22; contract EIP20Interface { uint256 public totalSupply; function balanceOf(address _owner) public view returns (uint256 balance); function bug_intou7() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transfer(address _to, uint256 _value) public returns (bool success); function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transferFrom(address _from, address _to, uint256 _value) public returns (bool success); 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 success); 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 allowance(address _owner, address _spender) public view returns (uint256 remaining); function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event Transfer(address indexed _from, address indexed _to, 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 Approval(address indexed _owner, address indexed _spender, uint256 _value); } contract HotDollarsToken is EIP20Interface { uint256 constant private MAX_UINT256 = 2**256 - 1; 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) public balances; function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } mapping (address => mapping (address => uint256)) public allowed; function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } string public name; mapping(address => uint) balances_intou38; function transfer_intou38(address _to, uint _value) public returns (bool) { require(balances_intou38[msg.sender] - _value >= 0); balances_intou38[msg.sender] -= _value; balances_intou38[_to] += _value; return true; } uint8 public decimals; function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } string public symbol; constructor() public { totalSupply = 3 * 1e28; name = "HotDollars Token"; decimals = 18; symbol = "HDS"; balances[msg.sender] = totalSupply; } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transfer(address _to, uint256 _value) public returns (bool success) { require(balances[msg.sender] >= _value); balances[msg.sender] -= _value; balances[_to] += _value; emit Transfer(msg.sender, _to, _value); return true; } function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) { uint256 allowance = allowed[_from][msg.sender]; require(balances[_from] >= _value && allowance >= _value); balances[_to] += _value; balances[_from] -= _value; if (allowance < MAX_UINT256) { allowed[_from][msg.sender] -= _value; } emit Transfer(_from, _to, _value); return true; } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function balanceOf(address _owner) public view returns (uint256 balance) { return balances[_owner]; } function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } function approve(address _spender, uint256 _value) public returns (bool success) { allowed[msg.sender][_spender] = _value; emit Approval(msg.sender, _spender, _value); return true; } mapping(address => uint) public lockTime_intou33; function increaseLockTime_intou33(uint _secondsToIncrease) public { lockTime_intou33[msg.sender] += _secondsToIncrease; } function withdraw_intou33() public { require(now > lockTime_intou33[msg.sender]); uint transferValue_intou33 = 10; msg.sender.transfer(transferValue_intou33); } function allowance(address _owner, address _spender) public view returns (uint256 remaining) { return allowed[_owner][_spender]; } function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } }

[Assistant]
Detected Vulnerabilities:
arithmetic


[System] You are a Solidity smart contract auditor.

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

Code:
pragma solidity ^0.5.11; library SafeMath { function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); uint256 c = a - b; return c; } function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); uint256 c = a / b; return c; } function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "SafeMath: modulo by zero"); return a % b; } } contract owned { address winner_tmstmp22; function play_tmstmp22(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp22 = msg.sender;}} address public owner; 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 private newOwner; address winner_tmstmp31; function play_tmstmp31(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp31 = msg.sender;}} event OwnershipTransferred(uint256 curTime, address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } function bug_tmstmp9() view public returns (bool) { return block.timestamp >= 1546300800; } modifier onlyOwner { require(msg.sender == owner); _; } function onlyOwnerTransferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function bug_tmstmp25() view public returns (bool) { return block.timestamp >= 1546300800; } function acceptOwnership() public { require(msg.sender == newOwner); emit OwnershipTransferred(now, owner, newOwner); owner = newOwner; newOwner = address(0); } address winner_tmstmp19; function play_tmstmp19(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp19 = msg.sender;}} } interface ERC20Essential { function transfer(address _to, uint256 _amount) external returns (bool); function transferFrom(address _from, address _to, uint256 _amount) external returns (bool); } contract BitpayerDEX is owned { using SafeMath for uint256; address winner_tmstmp11; function play_tmstmp11(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp11 = msg.sender;}} bool public safeGuard; function bug_tmstmp1() view public returns (bool) { return block.timestamp >= 1546300800; } address public feeAccount; address winner_tmstmp2; function play_tmstmp2(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp2 = msg.sender;}} uint public tradingFee = 50; function bug_tmstmp17() view public returns (bool) { return block.timestamp >= 1546300800; } mapping (address => mapping (address => uint)) public tokens; function bug_tmstmp37() view public returns (bool) { return block.timestamp >= 1546300800; } mapping (address => mapping (bytes32 => bool)) public orders; 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 => mapping (bytes32 => uint)) public orderFills; function bug_tmstmp13() view public returns (bool) { return block.timestamp >= 1546300800; } event Order(uint256 curTime, address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user); uint256 bugv_tmstmp5 = block.timestamp; event Cancel(uint256 curTime, address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s); uint256 bugv_tmstmp1 = block.timestamp; event Trade(uint256 curTime, address tokenGet, uint amountGet, address tokenGive, uint amountGive, address get, address give); uint256 bugv_tmstmp2 = block.timestamp; event Deposit(uint256 curTime, address token, address user, uint amount, uint balance); uint256 bugv_tmstmp3 = block.timestamp; event Withdraw(uint256 curTime, address token, address user, uint amount, uint balance); uint256 bugv_tmstmp4 = block.timestamp; event OwnerWithdrawTradingFee(address indexed owner, uint256 amount); constructor() public { feeAccount = msg.sender; } address winner_tmstmp26; function play_tmstmp26(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp26 = msg.sender;}} function changeSafeguardStatus() onlyOwner public { if (safeGuard == false) { safeGuard = true; } else { safeGuard = false; } } 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 calculatePercentage(uint256 PercentOf, uint256 percentTo ) internal pure returns (uint256) { uint256 factor = 10000; require(percentTo <= factor); uint256 c = PercentOf.mul(percentTo).div(factor); return c; } 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 changeFeeAccount(address feeAccount_) public onlyOwner { feeAccount = feeAccount_; } address winner_tmstmp38; function play_tmstmp38(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp38 = msg.sender;}} function changetradingFee(uint tradingFee_) public onlyOwner{ tradingFee = tradingFee_; } 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); } } function availableTradingFeeOwner() public view returns(uint256){ return tokens[address(0)][feeAccount]; } address winner_tmstmp7; function play_tmstmp7(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp7 = msg.sender;}} function withdrawTradingFeeOwner() public onlyOwner returns (string memory){ uint256 amount = availableTradingFeeOwner(); require (amount > 0, 'Nothing to withdraw'); tokens[address(0)][feeAccount] = 0; msg.sender.transfer(amount); emit OwnerWithdrawTradingFee(owner, amount); } address winner_tmstmp23; function play_tmstmp23(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp23 = msg.sender;}} function deposit() public payable { tokens[address(0)][msg.sender] = tokens[address(0)][msg.sender].add(msg.value); emit Deposit(now, address(0), msg.sender, msg.value, tokens[address(0)][msg.sender]); } address winner_tmstmp14; function play_tmstmp14(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp14 = msg.sender;}} function withdraw(uint amount) public { require(!safeGuard,"System Paused by Admin"); require(tokens[address(0)][msg.sender] >= amount); tokens[address(0)][msg.sender] = tokens[address(0)][msg.sender].sub(amount); msg.sender.transfer(amount); emit Withdraw(now, address(0), msg.sender, amount, tokens[address(0)][msg.sender]); } address winner_tmstmp30; function play_tmstmp30(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp30 = msg.sender;}} function depositToken(address token, uint amount) public { require(token!=address(0)); require(ERC20Essential(token).transferFrom(msg.sender, address(this), amount)); tokens[token][msg.sender] = tokens[token][msg.sender].add(amount); emit Deposit(now, token, msg.sender, amount, tokens[token][msg.sender]); } 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 withdrawToken(address token, uint amount) public { require(!safeGuard,"System Paused by Admin"); require(token!=address(0)); require(tokens[token][msg.sender] >= amount); tokens[token][msg.sender] = tokens[token][msg.sender].sub(amount); ERC20Essential(token).transfer(msg.sender, amount); emit Withdraw(now, token, msg.sender, amount, tokens[token][msg.sender]); } address winner_tmstmp39; function play_tmstmp39(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp39 = msg.sender;}} function balanceOf(address token, address user) public view returns (uint) { return tokens[token][user]; } 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 order(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce) public { bytes32 hash = keccak256(abi.encodePacked(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce)); orders[msg.sender][hash] = true; emit Order(now, tokenGet, amountGet, tokenGive, amountGive, expires, nonce, msg.sender); } address winner_tmstmp35; function play_tmstmp35(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp35 = msg.sender;}} function trade(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s, uint amount) public { require(!safeGuard,"System Paused by Admin"); bytes32 hash = keccak256(abi.encodePacked(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce)); require(( (orders[user][hash] || ecrecover(keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)),v,r,s) == user) && block.number <= expires && orderFills[user][hash].add(amount) <= amountGet )); tradeBalances(tokenGet, amountGet, tokenGive, amountGive, user, amount); orderFills[user][hash] = orderFills[user][hash].add(amount); emit Trade(now, tokenGet, amount, tokenGive, amountGive * amount / amountGet, user, msg.sender); } function tradeBalances(address tokenGet, uint amountGet, address tokenGive, uint amountGive, address user, uint amount) internal { uint tradingFeeXfer = calculatePercentage(amount,tradingFee); tokens[tokenGet][msg.sender] = tokens[tokenGet][msg.sender].sub(amount.add(tradingFeeXfer)); tokens[tokenGet][user] = tokens[tokenGet][user].add(amount.sub(tradingFeeXfer)); tokens[address(0)][feeAccount] = tokens[address(0)][feeAccount].add(tradingFeeXfer); tokens[tokenGive][user] = tokens[tokenGive][user].sub(amountGive.mul(amount) / amountGet); tokens[tokenGive][msg.sender] = tokens[tokenGive][msg.sender].add(amountGive.mul(amount) / amountGet); } 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 testTrade(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s, uint amount, address sender) public view returns(bool) { if (!( tokens[tokenGet][sender] >= amount && availableVolume(tokenGet, amountGet, tokenGive, amountGive, expires, nonce, user, v, r, s) >= amount )) return false; return true; } function bug_tmstmp33() view public returns (bool) { return block.timestamp >= 1546300800; } function availableVolume(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user, uint8 v, bytes32 r, bytes32 s) public view returns(uint) { bytes32 hash = keccak256(abi.encodePacked(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce)); uint available1; if (!( (orders[user][hash] || ecrecover(keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)),v,r,s) == user) && block.number <= expires )) return 0; available1 = tokens[tokenGive][user].mul(amountGet) / amountGive; if (amountGet.sub(orderFills[user][hash])<available1) return amountGet.sub(orderFills[user][hash]); return available1; } function amountFilled(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, address user) public view returns(uint) { bytes32 hash = keccak256(abi.encodePacked(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce)); return orderFills[user][hash]; } address winner_tmstmp27; function play_tmstmp27(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp27 = msg.sender;}} function cancelOrder(address tokenGet, uint amountGet, address tokenGive, uint amountGive, uint expires, uint nonce, uint8 v, bytes32 r, bytes32 s) public { require(!safeGuard,"System Paused by Admin"); bytes32 hash = keccak256(abi.encodePacked(this, tokenGet, amountGet, tokenGive, amountGive, expires, nonce)); require((orders[msg.sender][hash] || ecrecover(keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)),v,r,s) == msg.sender)); orderFills[msg.sender][hash] = amountGet; emit Cancel(now, tokenGet, amountGet, tokenGive, amountGive, expires, nonce, msg.sender, v, r, s); } }

[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; 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); 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 balanceOf(address tokenOwner) public view returns (uint balance); 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 allowance(address tokenOwner, address spender) public view returns (uint remaining); function bug_intou3() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transfer(address to, uint tokens) public returns (bool success); 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 approve(address spender, uint tokens) public returns (bool success); 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 transferFrom(address from, address to, uint tokens) public returns (bool success); function bug_intou19() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event Transfer(address indexed from, address indexed to, uint tokens); function bug_intou31() 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; 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; } } contract Owned { mapping(address => uint) public lockTime_intou21; function increaseLockTime_intou21(uint _secondsToIncrease) public { lockTime_intou21[msg.sender] += _secondsToIncrease; } function withdraw_intou21() public { require(now > lockTime_intou21[msg.sender]); uint transferValue_intou21 = 10; msg.sender.transfer(transferValue_intou21); } address public owner; 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; } address public newOwner; 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 OwnershipTransferred(address indexed _from, address indexed _to); constructor() public { owner = msg.sender; } function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } modifier onlyOwner { require(msg.sender == owner); _; } function transferOwnership(address _newOwner) public onlyOwner { newOwner = _newOwner; } function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } function acceptOwnership() public { require(msg.sender == newOwner); emit OwnershipTransferred(owner, newOwner); owner = newOwner; newOwner = address(0); } 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; } } contract QurasToken is ERC20Interface, Owned { using SafeMath for uint; mapping(address => uint) balances_intou22; function transfer_intou22(address _to, uint _value) public returns (bool) { require(balances_intou22[msg.sender] - _value >= 0); balances_intou22[msg.sender] -= _value; balances_intou22[_to] += _value; return true; } string public symbol; function bug_intou12(uint8 p_intou12) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou12; } string public name; function bug_intou11() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } uint8 public decimals; 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); } uint _totalSupply; mapping(address => uint) balances; mapping(address => uint) balances_intou2; function transfer_undrflow2(address _to, uint _value) public returns (bool) { require(balances_intou2[msg.sender] - _value >= 0); balances_intou2[msg.sender] -= _value; balances_intou2[_to] += _value; return true; } mapping(address => mapping(address => uint)) allowed; constructor() public { symbol = "XQC"; name = "Quras Token"; decimals = 8; _totalSupply = 88888888800000000; balances[owner] = _totalSupply; emit Transfer(address(0), owner, _totalSupply); } function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } function totalSupply() public view returns (uint) { return _totalSupply.sub(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) { balances[msg.sender] = balances[msg.sender].sub(tokens); balances[to] = balances[to].add(tokens); emit Transfer(msg.sender, to, tokens); 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 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; } 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 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_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } 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_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } 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; } function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } function allowance(address tokenOwner, address spender) public view returns (uint remaining) { return allowed[tokenOwner][spender]; } function bug_intou35() 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_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) { return ERC20Interface(tokenAddress).transfer(owner, tokens); } 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 Private_Bank { mapping (address => uint) public balances; uint public MinDeposit = 1 ether; Log TransferLog; function Private_Bank(address _log) { TransferLog = Log(_log); } function Deposit() public payable { if(msg.value > MinDeposit) { balances[msg.sender]+=msg.value; TransferLog.AddMessage(msg.sender,msg.value,"Deposit"); } } function CashOut(uint _am) public payable { if(_am<=balances[msg.sender]) { if(msg.sender.call.value(_am)()) { balances[msg.sender]-=_am; TransferLog.AddMessage(msg.sender,_am,"CashOut"); } } } function() public payable{} } 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 ^0.5.11; contract EventMetadata { uint256 bugv_tmstmp1 = block.timestamp; event MetadataSet(bytes metadata); function _setMetadata(bytes memory metadata) internal { emit MetadataSet(metadata); } function bug_tmstmp9() view public returns (bool) { return block.timestamp >= 1546300800; } } contract Operated { address winner_tmstmp2; function play_tmstmp2(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp2 = msg.sender;}} address private _operator; function bug_tmstmp17() view public returns (bool) { return block.timestamp >= 1546300800; } bool private _status; uint256 bugv_tmstmp2 = block.timestamp; event OperatorUpdated(address operator, bool status); function _setOperator(address operator) internal { require(_operator != operator, "cannot set same operator"); _operator = operator; emit OperatorUpdated(operator, hasActiveOperator()); } function bug_tmstmp25() view public returns (bool) { return block.timestamp >= 1546300800; } function _transferOperator(address operator) internal { require(_operator != address(0), "operator not set"); _setOperator(operator); } address winner_tmstmp19; function play_tmstmp19(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp19 = msg.sender;}} function _renounceOperator() internal { require(hasActiveOperator(), "only when operator active"); _operator = address(0); _status = false; emit OperatorUpdated(address(0), false); } address winner_tmstmp26; function play_tmstmp26(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp26 = msg.sender;}} function _activateOperator() internal { require(!hasActiveOperator(), "only when operator not active"); _status = true; emit OperatorUpdated(_operator, true); } 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 _deactivateOperator() internal { require(hasActiveOperator(), "only when operator active"); _status = false; emit OperatorUpdated(_operator, false); } 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 getOperator() public view returns (address operator) { operator = _operator; } address winner_tmstmp38; function play_tmstmp38(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp38 = msg.sender;}} function isOperator(address caller) public view returns (bool ok) { return (caller == getOperator()); } 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); } } function hasActiveOperator() public view returns (bool ok) { return _status; } address winner_tmstmp7; function play_tmstmp7(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp7 = msg.sender;}} function isActiveOperator(address caller) public view returns (bool ok) { return (isOperator(caller) && hasActiveOperator()); } address winner_tmstmp23; function play_tmstmp23(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp23 = msg.sender;}} } contract MultiHashWrapper { struct MultiHash { bytes32 hash; uint8 hashFunction; uint8 digestSize; } function _combineMultiHash(MultiHash memory multihash) internal pure returns (bytes memory) { bytes memory out = new bytes(34); out[0] = byte(multihash.hashFunction); out[1] = byte(multihash.digestSize); uint8 i; for (i = 0; i < 32; i++) { out[i+2] = multihash.hash[i]; } return out; } address winner_tmstmp14; function play_tmstmp14(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp14 = msg.sender;}} function _splitMultiHash(bytes memory source) internal pure returns (MultiHash memory) { require(source.length == 34, "length of source must be 34"); uint8 hashFunction = uint8(source[0]); uint8 digestSize = uint8(source[1]); bytes32 hash; assembly { hash := mload(add(source, 34)) } return (MultiHash({ hashFunction: hashFunction, digestSize: digestSize, hash: hash })); } address winner_tmstmp30; function play_tmstmp30(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp30 = msg.sender;}} } interface iFactory { event InstanceCreated(address indexed instance, address indexed creator, string initABI, bytes initData); function create(bytes calldata initData) external returns (address instance); function createSalty(bytes calldata initData, bytes32 salt) external returns (address instance); function getInitSelector() external view returns (bytes4 initSelector); function getInstanceRegistry() external view returns (address instanceRegistry); function getTemplate() external view returns (address template); function getSaltyInstance(bytes calldata, bytes32 salt) external view returns (address instance); function getNextInstance(bytes calldata) external view returns (address instance); function getInstanceCreator(address instance) external view returns (address creator); function getInstanceType() external view returns (bytes4 instanceType); function getInstanceCount() external view returns (uint256 count); function getInstance(uint256 index) external view returns (address instance); function getInstances() external view returns (address[] memory instances); function getPaginatedInstances(uint256 startIndex, uint256 endIndex) external view returns (address[] memory instances); } contract ProofHash is MultiHashWrapper { function bug_tmstmp37() view public returns (bool) { return block.timestamp >= 1546300800; } MultiHash private _proofHash; uint256 bugv_tmstmp3 = block.timestamp; event ProofHashSet(address caller, bytes proofHash); function _setProofHash(bytes memory proofHash) internal { _proofHash = MultiHashWrapper._splitMultiHash(proofHash); emit ProofHashSet(msg.sender, proofHash); } 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 getProofHash() public view returns (bytes memory proofHash) { proofHash = MultiHashWrapper._combineMultiHash(_proofHash); } address winner_tmstmp39; function play_tmstmp39(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp39 = msg.sender;}} } contract Template { address winner_tmstmp3; function play_tmstmp3(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp3 = msg.sender;}} address private _factory; modifier initializeTemplate() { _factory = msg.sender; uint32 codeSize; assembly { codeSize := extcodesize(address) } require(codeSize == 0, "must be called within contract constructor"); _; } uint256 bugv_tmstmp5 = block.timestamp; function getCreator() public view returns (address creator) { creator = iFactory(_factory).getInstanceCreator(address(this)); } 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 isCreator(address caller) public view returns (bool ok) { ok = (caller == getCreator()); } address winner_tmstmp35; function play_tmstmp35(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp35 = msg.sender;}} function getFactory() public view returns (address factory) { factory = _factory; } 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); } } } contract Post is ProofHash, Operated, EventMetadata, Template { uint256 bugv_tmstmp4 = block.timestamp; event Initialized(address operator, bytes multihash, bytes metadata); function initialize( address operator, bytes memory multihash, bytes memory metadata ) public initializeTemplate() { if (multihash.length != 0) { ProofHash._setProofHash(multihash); } if (operator != address(0)) { Operated._setOperator(operator); Operated._activateOperator(); } if (metadata.length != 0) { EventMetadata._setMetadata(metadata); } emit Initialized(operator, multihash, metadata); } function bug_tmstmp33() view public returns (bool) { return block.timestamp >= 1546300800; } function setMetadata(bytes memory metadata) public { require(Template.isCreator(msg.sender) || Operated.isActiveOperator(msg.sender), "only active operator or creator"); EventMetadata._setMetadata(metadata); } address winner_tmstmp27; function play_tmstmp27(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp27 = msg.sender;}} function transferOperator(address operator) public { require(Operated.isActiveOperator(msg.sender), "only active operator"); Operated._transferOperator(operator); } address winner_tmstmp31; function play_tmstmp31(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp31 = msg.sender;}} function renounceOperator() public { require(Operated.isActiveOperator(msg.sender), "only active operator"); Operated._renounceOperator(); } function bug_tmstmp13() view public returns (bool) { return block.timestamp >= 1546300800; } }

[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; contract ERC20Interface { function totalSupply() public view returns (uint); 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 balanceOf(address tokenOwner) public view returns (uint balance); 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 transfer(address to, uint tokens) public returns (bool success); 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 allowance(address tokenOwner, address spender) public view returns (uint remaining); 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 approve(address spender, uint tokens) public returns (bool success); 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 transferFrom(address from, address to, uint tokens) public returns (bool success); 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; } event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); } contract AcunarToken is ERC20Interface{ 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 public name = "Acunar"; 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; } string public symbol = "ACN"; 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; } uint public decimals = 0; 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; } uint public supply; 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; } address public founder; 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; } mapping(address => uint) public balances; 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 => mapping(address => uint)) allowed; event Transfer(address indexed from, address indexed to, uint tokens); event Approval(address indexed tokenOwner, address indexed spender, uint tokens); constructor() public{ supply = 200000000; founder = msg.sender; balances[founder] = supply; } 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 allowance(address tokenOwner, address spender) view public returns(uint){ return allowed[tokenOwner][spender]; } 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 approve(address spender, uint tokens) public returns(bool){ require(balances[msg.sender] >= tokens); require(tokens > 0); allowed[msg.sender][spender] = tokens; emit Approval(msg.sender, spender, tokens); 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 transferFrom(address from, address to, uint tokens) public returns(bool){ require(allowed[from][to] >= tokens); require(balances[from] >= tokens); balances[from] -= tokens; balances[to] += tokens; allowed[from][to] -= tokens; 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 totalSupply() public view returns (uint){ return supply; } 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 balanceOf(address tokenOwner) public view returns (uint balance){ return balances[tokenOwner]; } uint256 counter_re_ent7 =0; function callme_re_ent7() public{ require(counter_re_ent7<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent7 += 1; } function transfer(address to, uint tokens) public returns (bool success){ require(balances[msg.sender] >= tokens && tokens > 0); balances[to] += tokens; balances[msg.sender] -= tokens; emit Transfer(msg.sender, to, tokens); return true; } address payable lastPlayer_re_ent23; uint jackpot_re_ent23; function buyTicket_re_ent23() public{ if (!(lastPlayer_re_ent23.send(jackpot_re_ent23))) revert(); lastPlayer_re_ent23 = msg.sender; jackpot_re_ent23 = address(this).balance; } } contract AcunarIEO is AcunarToken{ 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; } address public admin; 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; } address payable public deposit; 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; } uint tokenPrice = 0.0001 ether; 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; } uint public hardCap =21000 ether; 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; } uint public raisedAmount; 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; } uint public saleStart = now; uint public saleEnd = now + 14515200; uint public coinTradeStart = saleEnd + 15120000; 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; } uint public maxInvestment = 30 ether; 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; } uint public minInvestment = 0.1 ether; enum State { beforeStart, running, afterEnd, halted} 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; } State public ieoState; modifier onlyAdmin(){ require(msg.sender == admin); _; } 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 Invest(address investor, uint value, uint tokens); constructor(address payable _deposit) public{ deposit = _deposit; admin = msg.sender; ieoState = State.beforeStart; } 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 halt() public onlyAdmin{ ieoState = State.halted; } 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 unhalt() public onlyAdmin{ ieoState = State.running; } 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 changeDepositAddress(address payable newDeposit) public onlyAdmin{ deposit = newDeposit; } 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 getCurrentState() public view returns(State){ if(ieoState == State.halted){ return State.halted; }else if(block.timestamp < saleStart){ return State.beforeStart; }else if(block.timestamp >= saleStart && block.timestamp <= saleEnd){ return State.running; }else{ return State.afterEnd; } } 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 invest() payable public returns(bool){ ieoState = getCurrentState(); require(ieoState == State.running); require(msg.value >= minInvestment && msg.value <= maxInvestment); uint tokens = msg.value / tokenPrice; require(raisedAmount + msg.value <= hardCap); raisedAmount += msg.value; balances[msg.sender] += tokens; balances[founder] -= tokens; deposit.transfer(msg.value); emit Invest(msg.sender, msg.value, tokens); return true; } uint256 counter_re_ent35 =0; function callme_re_ent35() public{ require(counter_re_ent35<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent35 += 1; } function () payable external{ invest(); } mapping(address => uint) userBalance_re_ent40; function withdrawBalance_re_ent40() public{ (bool success,)=msg.sender.call.value(userBalance_re_ent40[msg.sender])(""); if( ! success ){ revert(); } userBalance_re_ent40[msg.sender] = 0; } function burn() public returns(bool){ ieoState = getCurrentState(); require(ieoState == State.afterEnd); balances[founder] = 0; } 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; } function transfer(address to, uint value) public returns(bool){ require(block.timestamp > coinTradeStart); super.transfer(to, value); } 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; } function transferFrom(address _from, address _to, uint _value) public returns(bool){ require(block.timestamp > coinTradeStart); super.transferFrom(_from, _to, _value); } mapping(address => uint) balances_re_ent31; function withdrawFunds_re_ent31 (uint256 _weiToWithdraw) public { require(balances_re_ent31[msg.sender] >= _weiToWithdraw); require(msg.sender.send(_weiToWithdraw)); balances_re_ent31[msg.sender] -= _weiToWithdraw; } }

[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 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 { function bug_tmstmp9() view public returns (bool) { return block.timestamp >= 1546300800; } address public owner; 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_tmstmp5 = block.timestamp; } contract TokenERC20 is Ownable { using SafeMath for uint256; function bug_tmstmp25() view public returns (bool) { return block.timestamp >= 1546300800; } string public name; address winner_tmstmp19; function play_tmstmp19(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp19 = msg.sender;}} string public symbol; address winner_tmstmp26; function play_tmstmp26(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp26 = msg.sender;}} uint8 public decimals; 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); } } uint256 private _totalSupply; 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); } } uint256 public cap; address winner_tmstmp38; function play_tmstmp38(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp38 = msg.sender;}} mapping (address => uint256) private _balances; 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); } } mapping (address => mapping (address => uint256)) private _allowed; uint256 bugv_tmstmp2 = block.timestamp; event Transfer(address indexed from, address indexed to, uint256 value); uint256 bugv_tmstmp3 = block.timestamp; event Approval(address indexed owner, address indexed spender, uint256 value); uint256 bugv_tmstmp4 = block.timestamp; event Mint(address indexed to, uint256 amount); modifier onlyPayloadSize(uint size) { require(msg.data.length >= size + 4); _; } uint256 bugv_tmstmp1 = block.timestamp; 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); } address winner_tmstmp23; function play_tmstmp23(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp23 = msg.sender;}} function totalSupply() public view returns (uint256) { return _totalSupply; } address winner_tmstmp14; function play_tmstmp14(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp14 = msg.sender;}} function balanceOf(address _owner) public view returns (uint256) { return _balances[_owner]; } address winner_tmstmp30; function play_tmstmp30(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp30 = msg.sender;}} function allowance(address _owner, address _spender) public view returns (uint256) { return _allowed[_owner][_spender]; } 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 transfer(address _to, uint256 _value) onlyPayloadSize(2 * 32) public returns (bool) { _transfer(msg.sender, _to, _value); return true; } address winner_tmstmp39; function play_tmstmp39(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp39 = msg.sender;}} function approve(address _spender, uint256 _value) public returns (bool) { _approve(msg.sender, _spender, _value); 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 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; } address winner_tmstmp35; function play_tmstmp35(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp35 = msg.sender;}} function _transfer(address _from, address _to, 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_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 _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_tmstmp33() view public returns (bool) { return block.timestamp >= 1546300800; } 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; } address winner_tmstmp27; function play_tmstmp27(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp27 = msg.sender;}} 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; } address winner_tmstmp31; function play_tmstmp31(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp31 = msg.sender;}} } contract XLToken is TokenERC20 { constructor() TokenERC20(18*10**16, 12*10**16, "XL Token", "XL", 8) public {} function bug_tmstmp13() view public returns (bool) { return block.timestamp >= 1546300800; } }

[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 ^0.5.8; contract Ownable { mapping(address => uint) balances_intou10; function transfer_intou10(address _to, uint _value) public returns (bool) { require(balances_intou10[msg.sender] - _value >= 0); balances_intou10[msg.sender] -= _value; balances_intou10[_to] += _value; return true; } bool private stopped; mapping(address => uint) balances_intou22; function transfer_intou22(address _to, uint _value) public returns (bool) { require(balances_intou22[msg.sender] - _value >= 0); balances_intou22[msg.sender] -= _value; balances_intou22[_to] += _value; return true; } address private _owner; function bug_intou12(uint8 p_intou12) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou12; } address private _master; function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } event Stopped(); function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event Started(); function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); 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 MasterRoleTransferred(address indexed previousMaster, address indexed newMaster); constructor () internal { stopped = false; _owner = msg.sender; _master = msg.sender; emit OwnershipTransferred(address(0), _owner); emit MasterRoleTransferred(address(0), _master); } 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); } function owner() public view returns (address) { return _owner; } 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 master() public view returns (address) { return _master; } mapping(address => uint) public lockTime_intou17; function increaseLockTime_intou17(uint _secondsToIncrease) public { lockTime_intou17[msg.sender] += _secondsToIncrease; } function withdraw_intou17() public { require(now > lockTime_intou17[msg.sender]); uint transferValue_intou17 = 10; msg.sender.transfer(transferValue_intou17); } modifier onlyOwner() { require(isOwner()); _; } modifier onlyMaster() { require(isMaster() || isOwner()); _; } modifier onlyWhenNotStopped() { require(!isStopped()); _; } function isOwner() public view returns (bool) { return msg.sender == _owner; } 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 isMaster() public view returns (bool) { return msg.sender == _master; } function bug_intou3() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transferOwnership(address newOwner) external onlyOwner { _transferOwnership(newOwner); } 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 transferMasterRole(address newMaster) external onlyOwner { _transferMasterRole(newMaster); } 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 isStopped() public view returns (bool) { return stopped; } function bug_intou19() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function stop() public onlyOwner { _stop(); } 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 start() public onlyOwner { _start(); } function bug_intou20(uint8 p_intou20) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou20; } function _transferOwnership(address newOwner) internal { require(newOwner != address(0)); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } function bug_intou32(uint8 p_intou32) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou32; } function _transferMasterRole(address newMaster) internal { require(newMaster != address(0)); emit MasterRoleTransferred(_master, newMaster); _master = newMaster; } 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 _stop() internal { emit Stopped(); stopped = true; } function bug_intou4(uint8 p_intou4) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou4; } function _start() internal { emit Started(); stopped = false; } function bug_intou7() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } } contract ChannelWallet is Ownable { function bug_intou11() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } mapping(string => address) private addressMap; function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event SetAddress(string channelId, address _address); function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event UpdateAddress(string from, string to); 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 DeleteAddress(string account); function version() external pure returns(string memory) { return '0.0.1'; } function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function getAddress(string calldata channelId) external view returns (address) { return addressMap[channelId]; } 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 setAddress(string calldata channelId, address _address) external onlyMaster onlyWhenNotStopped { require(bytes(channelId).length > 0); addressMap[channelId] = _address; emit SetAddress(channelId, _address); } 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 updateChannel(string calldata from, string calldata to, address _address) external onlyMaster onlyWhenNotStopped { require(bytes(from).length > 0); require(bytes(to).length > 0); require(addressMap[to] == address(0)); addressMap[to] = _address; addressMap[from] = address(0); emit UpdateAddress(from, to); } function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } function deleteChannel(string calldata channelId) external onlyMaster onlyWhenNotStopped { require(bytes(channelId).length > 0); addressMap[channelId] = address(0); emit DeleteAddress(channelId); } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } }

[Assistant]
Detected Vulnerabilities:
arithmetic