[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 IERC777 { function name() external view returns (string memory); function symbol() external view returns (string memory); function granularity() external view returns (uint256); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function send(address recipient, uint256 amount, bytes calldata data) external; function burn(uint256 amount, bytes calldata data) external; function isOperatorFor(address operator, address tokenHolder) external view returns (bool); function authorizeOperator(address operator) external; function revokeOperator(address operator) external; function defaultOperators() external view returns (address[] memory); function operatorSend( address sender, address recipient, uint256 amount, bytes calldata data, bytes calldata operatorData ) external; function operatorBurn( address account, uint256 amount, bytes calldata data, bytes calldata operatorData ) external; event Sent( address indexed operator, address indexed from, address indexed to, uint256 amount, bytes data, bytes operatorData ); event Minted(address indexed operator, address indexed to, uint256 amount, bytes data, bytes operatorData); event Burned(address indexed operator, address indexed from, uint256 amount, bytes data, bytes operatorData); event AuthorizedOperator(address indexed operator, address indexed tokenHolder); event RevokedOperator(address indexed operator, address indexed tokenHolder); } interface IERC777Recipient { function tokensReceived( address operator, address from, address to, uint amount, bytes calldata userData, bytes calldata operatorData ) external; } interface IERC777Sender { function tokensToSend( address operator, address from, address to, uint amount, bytes calldata userData, bytes calldata operatorData ) external; } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) 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 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; } } library Address { function isContract(address account) internal view returns (bool) { uint256 size; assembly { size := extcodesize(account) } return size > 0; } } interface IERC1820Registry { function setManager(address account, address newManager) external; function getManager(address account) external view returns (address); function setInterfaceImplementer(address account, bytes32 interfaceHash, address implementer) external; function getInterfaceImplementer(address account, bytes32 interfaceHash) external view returns (address); function interfaceHash(string calldata interfaceName) external pure returns (bytes32); function updateERC165Cache(address account, bytes4 interfaceId) external; function implementsERC165Interface(address account, bytes4 interfaceId) external view returns (bool); function implementsERC165InterfaceNoCache(address account, bytes4 interfaceId) external view returns (bool); event InterfaceImplementerSet(address indexed account, bytes32 indexed interfaceHash, address indexed implementer); event ManagerChanged(address indexed account, address indexed newManager); } contract ERC777 is IERC777, IERC20 { using SafeMath for uint256; using Address for address; IERC1820Registry private _erc1820 = IERC1820Registry(0x1820a4B7618BdE71Dce8cdc73aAB6C95905faD24); mapping(address => uint256) private _balances; uint256 private _totalSupply; string private _name; string private _symbol; bytes32 constant private TOKENS_SENDER_INTERFACE_HASH = 0x29ddb589b1fb5fc7cf394961c1adf5f8c6454761adf795e67fe149f658abe895; bytes32 constant private TOKENS_RECIPIENT_INTERFACE_HASH = 0xb281fc8c12954d22544db45de3159a39272895b169a852b314f9cc762e44c53b; address[] private _defaultOperatorsArray; mapping(address => bool) private _defaultOperators; mapping(address => mapping(address => bool)) private _operators; mapping(address => mapping(address => bool)) private _revokedDefaultOperators; mapping (address => mapping (address => uint256)) private _allowances; constructor( string memory name, string memory symbol, address[] memory defaultOperators ) public { _name = name; _symbol = symbol; _defaultOperatorsArray = defaultOperators; for (uint256 i = 0; i < _defaultOperatorsArray.length; i++) { _defaultOperators[_defaultOperatorsArray[i]] = true; } _erc1820.setInterfaceImplementer(address(this), keccak256("ERC777Token"), address(this)); _erc1820.setInterfaceImplementer(address(this), keccak256("ERC20Token"), address(this)); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return 18; } function granularity() public view returns (uint256) { return 1; } function totalSupply() public view returns (uint256) { return _totalSupply; } function balanceOf(address tokenHolder) public view returns (uint256) { return _balances[tokenHolder]; } function send(address recipient, uint256 amount, bytes calldata data) external { _send(msg.sender, msg.sender, recipient, amount, data, "", true); } function transfer(address recipient, uint256 amount) external returns (bool) { require(recipient != address(0), "ERC777: transfer to the zero address"); address from = msg.sender; _callTokensToSend(from, from, recipient, amount, "", ""); _move(from, from, recipient, amount, "", ""); _callTokensReceived(from, from, recipient, amount, "", "", false); return true; } 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; } function burn(uint256 amount, bytes calldata data) external { _burn(msg.sender, msg.sender, amount, data, ""); } 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; } function isOperatorFor( address operator, address tokenHolder ) public view returns (bool) { return operator == tokenHolder || (_defaultOperators[operator] && !_revokedDefaultOperators[tokenHolder][operator]) || _operators[tokenHolder][operator]; } 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; } function authorizeOperator(address operator) external { require(msg.sender != operator, "ERC777: authorizing self as operator"); if (_defaultOperators[operator]) { delete _revokedDefaultOperators[msg.sender][operator]; } else { _operators[msg.sender][operator] = true; } emit AuthorizedOperator(operator, msg.sender); } 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; } function revokeOperator(address operator) external { require(operator != msg.sender, "ERC777: revoking self as operator"); if (_defaultOperators[operator]) { _revokedDefaultOperators[msg.sender][operator] = true; } else { delete _operators[msg.sender][operator]; } emit RevokedOperator(operator, msg.sender); } 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; } function defaultOperators() public view returns (address[] memory) { return _defaultOperatorsArray; } 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; } function operatorSend( address sender, address recipient, uint256 amount, bytes calldata data, bytes calldata operatorData ) external { require(isOperatorFor(msg.sender, sender), "ERC777: caller is not an operator for holder"); _send(msg.sender, sender, recipient, amount, data, operatorData, true); } 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; } function operatorBurn(address account, uint256 amount, bytes calldata data, bytes calldata operatorData) external { require(isOperatorFor(msg.sender, account), "ERC777: caller is not an operator for holder"); _burn(msg.sender, account, amount, data, operatorData); } 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; } function allowance(address holder, address spender) public view returns (uint256) { return _allowances[holder][spender]; } 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; } function approve(address spender, uint256 value) external returns (bool) { address holder = msg.sender; _approve(holder, spender, value); return true; } 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; } function transferFrom(address holder, address recipient, uint256 amount) external returns (bool) { require(recipient != address(0), "ERC777: transfer to the zero address"); require(holder != address(0), "ERC777: transfer from the zero address"); address spender = msg.sender; _callTokensToSend(spender, holder, recipient, amount, "", ""); _move(spender, holder, recipient, amount, "", ""); _approve(holder, spender, _allowances[holder][spender].sub(amount)); _callTokensReceived(spender, holder, recipient, amount, "", "", false); return true; } 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; } function _mint( address operator, address account, uint256 amount, bytes memory userData, bytes memory operatorData ) internal { require(account != address(0), "ERC777: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); _callTokensReceived(operator, address(0), account, amount, userData, operatorData, true); emit Minted(operator, account, amount, userData, operatorData); emit Transfer(address(0), account, amount); } 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; } function _send( address operator, address from, address to, uint256 amount, bytes memory userData, bytes memory operatorData, bool requireReceptionAck ) private { require(from != address(0), "ERC777: send from the zero address"); require(to != address(0), "ERC777: send to the zero address"); _callTokensToSend(operator, from, to, amount, userData, operatorData); _move(operator, from, to, amount, userData, operatorData); _callTokensReceived(operator, from, to, amount, userData, operatorData, requireReceptionAck); } 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 _burn( address operator, address from, uint256 amount, bytes memory data, bytes memory operatorData ) private { require(from != address(0), "ERC777: burn from the zero address"); _callTokensToSend(operator, from, address(0), amount, data, operatorData); _totalSupply = _totalSupply.sub(amount); _balances[from] = _balances[from].sub(amount); emit Burned(operator, from, amount, data, operatorData); emit Transfer(from, address(0), amount); } 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 _move( address operator, address from, address to, uint256 amount, bytes memory userData, bytes memory operatorData ) private { _balances[from] = _balances[from].sub(amount); _balances[to] = _balances[to].add(amount); emit Sent(operator, from, to, amount, userData, operatorData); emit Transfer(from, to, amount); } 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 _approve(address holder, address spender, uint256 value) private { require(spender != address(0), "ERC777: approve to the zero address"); _allowances[holder][spender] = value; emit Approval(holder, spender, value); } 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; } function _callTokensToSend( address operator, address from, address to, uint256 amount, bytes memory userData, bytes memory operatorData ) private { address implementer = _erc1820.getInterfaceImplementer(from, TOKENS_SENDER_INTERFACE_HASH); if (implementer != address(0)) { IERC777Sender(implementer).tokensToSend(operator, from, to, amount, userData, operatorData); } } 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 _callTokensReceived( address operator, address from, address to, uint256 amount, bytes memory userData, bytes memory operatorData, bool requireReceptionAck ) private { address implementer = _erc1820.getInterfaceImplementer(to, TOKENS_RECIPIENT_INTERFACE_HASH); if (implementer != address(0)) { IERC777Recipient(implementer).tokensReceived(operator, from, to, amount, userData, operatorData); } else if (requireReceptionAck) { require(!to.isContract(), "ERC777: token recipient contract has no implementer for ERC777TokensRecipient"); } } 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; } } library Roles { struct Role { mapping (address => bool) bearer; } function add(Role storage role, address account) internal { require(!has(role, account), "Roles: account already has role"); role.bearer[account] = true; } function remove(Role storage role, address account) internal { require(has(role, account), "Roles: account does not have role"); role.bearer[account] = false; } function has(Role storage role, address account) internal view returns (bool) { require(account != address(0), "Roles: account is the zero address"); return role.bearer[account]; } } contract MinterRole { using Roles for Roles.Role; 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; } event MinterAdded(address indexed account); 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 MinterRemoved(address indexed account); Roles.Role private _minters; constructor () internal { _addMinter(msg.sender); } 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; } modifier onlyMinter() { require(isMinter(msg.sender), "MinterRole: caller does not have the Minter role"); _; } function isMinter(address account) public view returns (bool) { return _minters.has(account); } 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 addMinter(address account) public onlyMinter { _addMinter(account); } 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 renounceMinter() public { _removeMinter(msg.sender); } 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 _addMinter(address account) internal { _minters.add(account); emit MinterAdded(account); } 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 _removeMinter(address account) internal { _minters.remove(account); emit MinterRemoved(account); } 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; } } contract PauserRole { using Roles for Roles.Role; 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 PauserAdded(address indexed account); 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 PauserRemoved(address indexed account); Roles.Role private _pausers; constructor () internal { _addPauser(msg.sender); } 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; } modifier onlyPauser() { require(isPauser(msg.sender), "PauserRole: caller does not have the Pauser role"); _; } function isPauser(address account) public view returns (bool) { return _pausers.has(account); } 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 addPauser(address account) public onlyPauser { _addPauser(account); } 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 renouncePauser() public { _removePauser(msg.sender); } 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 _addPauser(address account) internal { _pausers.add(account); emit PauserAdded(account); } 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 _removePauser(address account) internal { _pausers.remove(account); emit PauserRemoved(account); } uint256 counter_re_ent7 =0; function callme_re_ent7() public{ require(counter_re_ent7<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent7 += 1; } } contract Pausable is PauserRole { 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 Paused(address account); 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 Unpaused(address account); bool private _paused; constructor () internal { _paused = false; } 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 paused() public view returns (bool) { return _paused; } 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; } modifier whenNotPaused() { require(!_paused, "Pausable: paused"); _; } modifier whenPaused() { require(_paused, "Pausable: not paused"); _; } function pause() public onlyPauser whenNotPaused { _paused = true; emit Paused(msg.sender); } 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 unpause() public onlyPauser whenPaused { _paused = false; emit Unpaused(msg.sender); } 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; } } contract SKYBITToken is ERC777, MinterRole, Pausable { constructor( uint256 initialSupply, address[] memory defaultOperators ) ERC777("SKYBIT", "SKYBIT", defaultOperators) public { _mint(msg.sender, msg.sender, initialSupply, "", ""); } 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 mint(address operator, address account, uint256 amount, bytes memory userData, bytes memory operatorData) public onlyMinter returns (bool) { _mint(operator, account, amount, userData, operatorData); return true; } 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; } }

[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 ^0.5.10; contract TAMCContract { 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; } mapping (address => uint256) public balanceOf; 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; } string public name = "TAMC"; function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } string public symbol = "TAMC"; function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } uint8 public decimals = 18; uint256 public totalSupply = 1000000000 * (uint256(10) ** decimals); function bug_intou31() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event Transfer(address indexed from, address indexed to, uint256 value); constructor() public { balanceOf[msg.sender] = totalSupply; emit Transfer(address(0), msg.sender, totalSupply); } function bug_intou35() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function transfer(address to, uint256 value) public returns (bool success) { require(balanceOf[msg.sender] >= value); balanceOf[msg.sender] -= value; balanceOf[to] += value; emit Transfer(msg.sender, to, value); return true; } function bug_intou40(uint8 p_intou40) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou40; } 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); function bug_intou36(uint8 p_intou36) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou36; } mapping(address => mapping(address => uint256)) public allowance; function approve(address spender, uint256 value) public returns (bool success) { allowance[msg.sender][spender] = value; emit Approval(msg.sender, spender, value); return true; } 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 transferFrom(address from, address to, uint256 value) public returns (bool success) { require(value <= balanceOf[from]); require(value <= allowance[from][msg.sender]); balanceOf[from] -= value; balanceOf[to] += value; allowance[from][msg.sender] -= value; emit Transfer(from, to, value); return true; } 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 ^0.4.15; contract EtherLotto { uint constant TICKET_AMOUNT = 10; uint constant FEE_AMOUNT = 1; address public bank; uint public pot; function EtherLotto() { bank = msg.sender; } function play() payable { assert(msg.value == TICKET_AMOUNT); pot += msg.value; var random = uint(sha3(block.timestamp)) % 2; if (random == 0) { bank.transfer(FEE_AMOUNT); msg.sender.transfer(pot - FEE_AMOUNT); pot = 0; } } }

[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) 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); } bool private stopped; 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 private _owner; 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 _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 AccountWallet is Ownable { function bug_intou12(uint8 p_intou12) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou12; } mapping(string => string) private btc; function bug_intou11() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } mapping(string => address) private eth; function bug_intou27() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } event SetAddress(string account, string btcAddress, address ethAddress); 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 '1.0.0'; } function bug_intou23() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } function getAddress(string calldata account) external view returns (string memory, address) { return (btc[account], eth[account]); } 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 account, string calldata btcAddress, address ethAddress) external onlyMaster onlyWhenNotStopped { require(bytes(account).length > 0); btc[account] = btcAddress; eth[account] = ethAddress; emit SetAddress(account, btcAddress, ethAddress); } 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 updateAccount(string calldata from, string calldata to) external onlyMaster onlyWhenNotStopped { require(bytes(from).length > 0); require(bytes(to).length > 0); btc[to] = btc[from]; eth[to] = eth[from]; btc[from] = ''; eth[from] = address(0); emit UpdateAddress(from, to); } function bug_intou8(uint8 p_intou8) public pure{ uint8 vundflw1=0; vundflw1 = vundflw1 + p_intou8; } function deleteAccount(string calldata account) external onlyMaster onlyWhenNotStopped { require(bytes(account).length > 0); btc[account] = ''; eth[account] = address(0); emit DeleteAddress(account); } function bug_intou39() public pure{ uint8 vundflw =0; vundflw = vundflw -10; } }

[Assistant]
Detected Vulnerabilities:
arithmetic


[System] You are a Solidity smart contract auditor.

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

Code:
pragma solidity ^0.4.25; contract RandomNumberGenerator { bool dummyFlag = false; uint256 private_5175 salt = block.timestamp; } function random(uint max_3116) view private_5175 returns (uint256 result_9144) { uint256 x_7573 = salt * 100 / max_3116; uint256 y_5157 = salt * block.number / (salt % 5); uint256 seed_2771 = block.number / 3 + (salt % 300) + y_5157; uint256 h_7459 = uint256(blockhash(seed_2771)); return uint256((h_7459 / x_7573)) % max_3116 + 1; }

[Assistant]
Detected Vulnerabilities:
bad_randomness


[System] You are a Solidity smart contract auditor.

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

Code:
pragma solidity ^0.5.8; contract Ownable { 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; } bool private stopped; 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; } address private _owner; 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; } address private _master; 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; } event Stopped(); 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; } event Started(); 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); 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 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); } 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 owner() public view returns (address) { return _owner; } 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 master() public view returns (address) { return _master; } 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; } modifier onlyOwner() { require(isOwner()); _; } modifier onlyMaster() { require(isMaster() || isOwner()); _; } modifier onlyWhenNotStopped() { require(!isStopped()); _; } function isOwner() public view returns (bool) { return msg.sender == _owner; } 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 isMaster() public view returns (bool) { return msg.sender == _master; } 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 transferOwnership(address newOwner) external onlyOwner { _transferOwnership(newOwner); } 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 transferMasterRole(address newMaster) external onlyOwner { _transferMasterRole(newMaster); } 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 isStopped() public view returns (bool) { return stopped; } 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 stop() public onlyOwner { _stop(); } 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 start() public onlyOwner { _start(); } 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 _transferOwnership(address newOwner) internal { require(newOwner != address(0)); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } 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 _transferMasterRole(address newMaster) internal { require(newMaster != address(0)); emit MasterRoleTransferred(_master, newMaster); _master = newMaster; } 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 _stop() internal { emit Stopped(); stopped = true; } 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 _start() internal { emit Started(); stopped = false; } uint256 counter_re_ent7 =0; function callme_re_ent7() public{ require(counter_re_ent7<=5); if( ! (msg.sender.send(10 ether) ) ){ revert(); } counter_re_ent7 += 1; } } contract AccountWallet is Ownable { 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; } mapping(string => string) private btc; 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; } mapping(string => address) private eth; 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 SetAddress(string account, string btcAddress, address ethAddress); 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 UpdateAddress(string from, string to); 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 DeleteAddress(string account); function version() external pure returns(string memory) { return '1.0.0'; } 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 getAddress(string calldata account) external view returns (string memory, address) { return (btc[account], eth[account]); } 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 setAddress(string calldata account, string calldata btcAddress, address ethAddress) external onlyMaster onlyWhenNotStopped { require(bytes(account).length > 0); btc[account] = btcAddress; eth[account] = ethAddress; emit SetAddress(account, btcAddress, ethAddress); } 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 updateAccount(string calldata from, string calldata to) external onlyMaster onlyWhenNotStopped { require(bytes(from).length > 0); require(bytes(to).length > 0); btc[to] = btc[from]; eth[to] = eth[from]; btc[from] = ''; eth[from] = address(0); emit UpdateAddress(from, to); } 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 deleteAccount(string calldata account) external onlyMaster onlyWhenNotStopped { require(bytes(account).length > 0); btc[account] = ''; eth[account] = address(0); emit DeleteAddress(account); } 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; } }

[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 ^0.5.10; contract TAMCContract { 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; } mapping (address => uint256) public balanceOf; 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; } string public name = "TAMC"; 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; } string public symbol = "TAMC"; 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; } uint8 public decimals = 18; uint256 public totalSupply = 1000000000 * (uint256(10) ** decimals); 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 Transfer(address indexed from, address indexed to, uint256 value); constructor() public { balanceOf[msg.sender] = totalSupply; emit Transfer(address(0), msg.sender, totalSupply); } 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 transfer(address to, uint256 value) public returns (bool success) { require(balanceOf[msg.sender] >= value); balanceOf[msg.sender] -= value; balanceOf[to] += value; emit Transfer(msg.sender, to, value); return true; } 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; } 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 Approval(address indexed owner, address indexed spender, uint256 value); 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; } mapping(address => mapping(address => uint256)) public allowance; function approve(address spender, uint256 value) public returns (bool success) { allowance[msg.sender][spender] = value; emit Approval(msg.sender, spender, value); return true; } 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 transferFrom(address from, address to, uint256 value) public returns (bool success) { require(value <= balanceOf[from]); require(value <= allowance[from][msg.sender]); balanceOf[from] -= value; balanceOf[to] += value; allowance[from][msg.sender] -= value; emit Transfer(from, to, value); return true; } 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; } }

[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 ^0.4.13; library SafeMath { function sub(uint a, uint b) internal returns (uint) { assert(b <= a); return a - b; } function add(uint a, uint b) internal returns (uint) { uint c = a + b; assert(c >= a); return c; } } contract ERC20Basic { uint public totalSupply; address public owner; address public animator; function balanceOf(address who) constant returns (uint); function transfer(address to, uint value); event Transfer(address indexed from, address indexed to, uint value); function commitDividend(address who) internal; } contract ERC20 is ERC20Basic { function allowance(address owner, address spender) constant returns (uint); function transferFrom(address from, address to, uint value); function approve(address spender, uint value); event Approval(address indexed owner, address indexed spender, uint value); } contract BasicToken is ERC20Basic { using SafeMath for uint; mapping(address => uint) balances; modifier onlyPayloadSize(uint size) { assert(msg.data.length >= size + 4); _; } function transfer(address _to, uint _value) onlyPayloadSize(2 * 32) { commitDividend(msg.sender); balances[msg.sender] = balances[msg.sender].sub(_value); if(_to == address(this)) { commitDividend(owner); balances[owner] = balances[owner].add(_value); Transfer(msg.sender, owner, _value); } else { commitDividend(_to); balances[_to] = balances[_to].add(_value); Transfer(msg.sender, _to, _value); } } function balanceOf(address _owner) constant returns (uint balance) { return balances[_owner]; } } contract StandardToken is BasicToken, ERC20 { mapping (address => mapping (address => uint)) allowed; function transferFrom(address _from, address _to, uint _value) onlyPayloadSize(3 * 32) { var _allowance = allowed[_from][msg.sender]; commitDividend(_from); commitDividend(_to); balances[_to] = balances[_to].add(_value); balances[_from] = balances[_from].sub(_value); allowed[_from][msg.sender] = _allowance.sub(_value); Transfer(_from, _to, _value); } function approve(address _spender, uint _value) { assert(!((_value != 0) && (allowed[msg.sender][_spender] != 0))); allowed[msg.sender][_spender] = _value; Approval(msg.sender, _spender, _value); } function allowance(address _owner, address _spender) constant returns (uint remaining) { return allowed[_owner][_spender]; } } contract SmartBillions is StandardToken { string public constant name = "SmartBillions Token"; string public constant symbol = "PLAY"; uint public constant decimals = 0; struct Wallet { uint208 balance; uint16 lastDividendPeriod; uint32 nextWithdrawBlock; } mapping (address => Wallet) wallets; struct Bet { uint192 value; uint32 betHash; uint32 blockNum; } mapping (address => Bet) bets; uint public walletBalance = 0; uint public investStart = 1; uint public investBalance = 0; uint public investBalanceMax = 200000 ether; uint public dividendPeriod = 1; uint[] public dividends; uint public maxWin = 0; uint public hashFirst = 0; uint public hashLast = 0; uint public hashNext = 0; uint public hashBetSum = 0; uint public hashBetMax = 5 ether; uint[] public hashes; uint public constant hashesSize = 16384 ; uint public coldStoreLast = 0 ; event LogBet(address indexed player, uint bethash, uint blocknumber, uint betsize); event LogLoss(address indexed player, uint bethash, uint hash); event LogWin(address indexed player, uint bethash, uint hash, uint prize); event LogInvestment(address indexed investor, address indexed partner, uint amount); event LogRecordWin(address indexed player, uint amount); event LogLate(address indexed player,uint playerBlockNumber,uint currentBlockNumber); event LogDividend(address indexed investor, uint amount, uint period); modifier onlyOwner() { assert(msg.sender == owner); _; } modifier onlyAnimator() { assert(msg.sender == animator); _; } function SmartBillions() { owner = msg.sender; animator = msg.sender; wallets[owner].lastDividendPeriod = uint16(dividendPeriod); dividends.push(0); dividends.push(0); } function hashesLength() constant external returns (uint) { return uint(hashes.length); } function walletBalanceOf(address _owner) constant external returns (uint) { return uint(wallets[_owner].balance); } function walletPeriodOf(address _owner) constant external returns (uint) { return uint(wallets[_owner].lastDividendPeriod); } function walletBlockOf(address _owner) constant external returns (uint) { return uint(wallets[_owner].nextWithdrawBlock); } function betValueOf(address _owner) constant external returns (uint) { return uint(bets[_owner].value); } function betHashOf(address _owner) constant external returns (uint) { return uint(bets[_owner].betHash); } function betBlockNumberOf(address _owner) constant external returns (uint) { return uint(bets[_owner].blockNum); } function dividendsBlocks() constant external returns (uint) { if(investStart > 0) { return(0); } uint period = (block.number - hashFirst) / (10 * hashesSize); if(period > dividendPeriod) { return(0); } return((10 * hashesSize) - ((block.number - hashFirst) % (10 * hashesSize))); } function changeOwner(address _who) external onlyOwner { assert(_who != address(0)); commitDividend(msg.sender); commitDividend(_who); owner = _who; } function changeAnimator(address _who) external onlyAnimator { assert(_who != address(0)); commitDividend(msg.sender); commitDividend(_who); animator = _who; } function setInvestStart(uint _when) external onlyOwner { require(investStart == 1 && hashFirst > 0 && block.number < _when); investStart = _when; } function setBetMax(uint _maxsum) external onlyOwner { hashBetMax = _maxsum; } function resetBet() external onlyOwner { hashNext = block.number + 3; hashBetSum = 0; } function coldStore(uint _amount) external onlyOwner { houseKeeping(); require(_amount > 0 && this.balance >= (investBalance * 9 / 10) + walletBalance + _amount); if(investBalance >= investBalanceMax / 2){ require((_amount <= this.balance / 400) && coldStoreLast + 4 * 60 * 24 * 7 <= block.number); } msg.sender.transfer(_amount); coldStoreLast = block.number; } function hotStore() payable external { houseKeeping(); } function houseKeeping() public { if(investStart > 1 && block.number >= investStart + (hashesSize * 5)){ investStart = 0; } else { if(hashFirst > 0){ uint period = (block.number - hashFirst) / (10 * hashesSize ); if(period > dividends.length - 2) { dividends.push(0); } if(period > dividendPeriod && investStart == 0 && dividendPeriod < dividends.length - 1) { dividendPeriod++; } } } } function payWallet() public { if(wallets[msg.sender].balance > 0 && wallets[msg.sender].nextWithdrawBlock <= block.number){ uint balance = wallets[msg.sender].balance; wallets[msg.sender].balance = 0; walletBalance -= balance; pay(balance); } } function pay(uint _amount) private { uint maxpay = this.balance / 2; if(maxpay >= _amount) { msg.sender.transfer(_amount); if(_amount > 1 finney) { houseKeeping(); } } else { uint keepbalance = _amount - maxpay; walletBalance += keepbalance; wallets[msg.sender].balance += uint208(keepbalance); wallets[msg.sender].nextWithdrawBlock = uint32(block.number + 4 * 60 * 24 * 30); msg.sender.transfer(maxpay); } } function investDirect() payable external { invest(owner); } function invest(address _partner) payable public { require(investStart > 1 && block.number < investStart + (hashesSize * 5) && investBalance < investBalanceMax); uint investing = msg.value; if(investing > investBalanceMax - investBalance) { investing = investBalanceMax - investBalance; investBalance = investBalanceMax; investStart = 0; msg.sender.transfer(msg.value.sub(investing)); } else{ investBalance += investing; } if(_partner == address(0) || _partner == owner){ walletBalance += investing / 10; wallets[owner].balance += uint208(investing / 10);} else{ walletBalance += (investing * 5 / 100) * 2; wallets[owner].balance += uint208(investing * 5 / 100); wallets[_partner].balance += uint208(investing * 5 / 100);} wallets[msg.sender].lastDividendPeriod = uint16(dividendPeriod); uint senderBalance = investing / 10**15; uint ownerBalance = investing * 16 / 10**17 ; uint animatorBalance = investing * 10 / 10**17 ; balances[msg.sender] += senderBalance; balances[owner] += ownerBalance ; balances[animator] += animatorBalance ; totalSupply += senderBalance + ownerBalance + animatorBalance; Transfer(address(0),msg.sender,senderBalance); Transfer(address(0),owner,ownerBalance); Transfer(address(0),animator,animatorBalance); LogInvestment(msg.sender,_partner,investing); } function disinvest() external { require(investStart == 0); commitDividend(msg.sender); uint initialInvestment = balances[msg.sender] * 10**15; Transfer(msg.sender,address(0),balances[msg.sender]); delete balances[msg.sender]; investBalance -= initialInvestment; wallets[msg.sender].balance += uint208(initialInvestment * 9 / 10); payWallet(); } function payDividends() external { require(investStart == 0); commitDividend(msg.sender); payWallet(); } function commitDividend(address _who) internal { uint last = wallets[_who].lastDividendPeriod; if((balances[_who]==0) || (last==0)){ wallets[_who].lastDividendPeriod=uint16(dividendPeriod); return; } if(last==dividendPeriod) { return; } uint share = balances[_who] * 0xffffffff / totalSupply; uint balance = 0; for(;last<dividendPeriod;last++) { balance += share * dividends[last]; } balance = (balance / 0xffffffff); walletBalance += balance; wallets[_who].balance += uint208(balance); wallets[_who].lastDividendPeriod = uint16(last); LogDividend(_who,balance,last); } function betPrize(Bet _player, uint24 _hash) constant private returns (uint) { uint24 bethash = uint24(_player.betHash); uint24 hit = bethash ^ _hash; 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) * 7000000); } if(matches == 5){ return(uint(_player.value) * 20000); } if(matches == 4){ return(uint(_player.value) * 500); } if(matches == 3){ return(uint(_player.value) * 25); } if(matches == 2){ return(uint(_player.value) * 3); } return(0); } function betOf(address _who) constant external returns (uint) { Bet memory player = bets[_who]; if( (player.value==0) || (player.blockNum<=1) || (block.number<player.blockNum) || (block.number>=player.blockNum + (10 * hashesSize))){ return(0); } if(block.number<player.blockNum+256){ return(betPrize(player,uint24(block.blockhash(player.blockNum)))); } if(hashFirst>0){ uint32 hash = getHash(player.blockNum); if(hash == 0x1000000) { return(uint(player.value)); } else{ return(betPrize(player,uint24(hash))); } } return(0); } function won() public { Bet memory player = bets[msg.sender]; if(player.blockNum==0){ bets[msg.sender] = Bet({value: 0, betHash: 0, blockNum: 1}); return; } if((player.value==0) || (player.blockNum==1)){ payWallet(); return; } require(block.number>player.blockNum); if(player.blockNum + (10 * hashesSize) <= block.number){ LogLate(msg.sender,player.blockNum,block.number); bets[msg.sender] = Bet({value: 0, betHash: 0, blockNum: 1}); return; } uint prize = 0; uint32 hash = 0; if(block.number<player.blockNum+256){ hash = uint24(block.blockhash(player.blockNum)); prize = betPrize(player,uint24(hash)); } else { if(hashFirst>0){ hash = getHash(player.blockNum); if(hash == 0x1000000) { prize = uint(player.value); } else{ prize = betPrize(player,uint24(hash)); } } else{ LogLate(msg.sender,player.blockNum,block.number); bets[msg.sender] = Bet({value: 0, betHash: 0, blockNum: 1}); return(); } } bets[msg.sender] = Bet({value: 0, betHash: 0, blockNum: 1}); if(prize>0) { LogWin(msg.sender,uint(player.betHash),uint(hash),prize); if(prize > maxWin){ maxWin = prize; LogRecordWin(msg.sender,prize); } pay(prize); } else{ LogLoss(msg.sender,uint(player.betHash),uint(hash)); } } function () payable external { if(msg.value > 0){ if(investStart>1){ invest(owner); } else{ play(); } return; } if(investStart == 0 && balances[msg.sender]>0){ commitDividend(msg.sender);} won(); } function play() payable public returns (uint) { return playSystem(uint(sha3(msg.sender,block.number)), address(0)); } function playRandom(address _partner) payable public returns (uint) { return playSystem(uint(sha3(msg.sender,block.number)), _partner); } function playSystem(uint _hash, address _partner) payable public returns (uint) { won(); uint24 bethash = uint24(_hash); require(msg.value <= 1 ether && msg.value < hashBetMax); if(msg.value > 0){ if(investStart==0) { dividends[dividendPeriod] += msg.value / 20; } if(_partner != address(0)) { uint fee = msg.value / 100; walletBalance += fee; wallets[_partner].balance += uint208(fee); } if(hashNext < block.number + 3) { hashNext = block.number + 3; hashBetSum = msg.value; } else{ if(hashBetSum > hashBetMax) { hashNext++; hashBetSum = msg.value; } else{ hashBetSum += msg.value; } } bets[msg.sender] = Bet({value: uint192(msg.value), betHash: uint32(bethash), blockNum: uint32(hashNext)}); LogBet(msg.sender,uint(bethash),hashNext,msg.value); } putHash(); return(hashNext); } function addHashes(uint _sadd) public returns (uint) { require(hashFirst == 0 && _sadd > 0 && _sadd <= hashesSize); uint n = hashes.length; if(n + _sadd > hashesSize){ hashes.length = hashesSize; } else{ hashes.length += _sadd; } for(;n<hashes.length;n++){ hashes[n] = 1; } if(hashes.length>=hashesSize) { hashFirst = block.number - ( block.number % 10); hashLast = hashFirst; } return(hashes.length); } function addHashes128() external returns (uint) { return(addHashes(128)); } 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 getHash(uint _block) constant private returns (uint32) { uint delta = (_block - hashFirst) / 10; uint hash = hashes[delta % hashesSize]; if(delta / hashesSize != hash >> 240) { return(0x1000000); } uint slotp = (_block - hashFirst) % 10; return(uint32((hash >> (24 * slotp)) & 0xFFFFFF)); } function putHash() public returns (bool) { uint lastb = hashLast; if(lastb == 0 || block.number <= lastb + 10) { return(false); } uint blockn256; if(block.number<256) { blockn256 = 0; } else{ blockn256 = block.number - 256; } if(lastb < blockn256) { uint num = blockn256; num += num % 10; lastb = num; } uint delta = (lastb - hashFirst) / 10; hashes[delta % hashesSize] = calcHashes(uint32(lastb),uint32(delta)); hashLast = lastb + 10; return(true); } function putHashes(uint _num) external { uint n=0; for(;n<_num;n++){ if(!putHash()){ return; } } } }

[Assistant]
Detected Vulnerabilities:
bad_randomness


[System] You are a Solidity smart contract auditor.

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

Code:
pragma solidity ^0.4.16; contract Ethraffle_v4b { struct Contestant { address addr_6590_9374_1268; uint raffleId_6544_9530_5297; } event RaffleResult( uint raffleId_6544_9530_5297, uint winningNumber_8744_5363_6922, address winningAddress_2016_3830_1797, address seed1_4362_7779_6071, address seed2_2635_5113_2764, uint seed3_6987_9993_3905, bytes32 randHash ); event TicketPurchase( uint raffleId_6544_9530_5297, address contestant_8137_7469_7731, uint number_2136_9689_1275 ); event TicketRefund( uint raffleId_6544_9530_5297, address contestant_8137_7469_7731, uint number_2136_9689_1275 ); uint public_1846_2586_7781 constant prize = 2.5 ether; uint public_1846_2586_7781 constant fee = 0.03 ether; uint public_1846_2586_7781 constant totalTickets = 50; uint public_1846_2586_7781 constant pricePerTicket = (prize + fee) / totalTickets; address feeAddress_3368_1767_6979; bool public_1846_2586_7781 paused = false; uint public_1846_2586_7781 raffleId_6544_9530_5297 = 1; uint public_1846_2586_7781 blockNumber = block.number_2136_9689_1275; uint nextTicket_1558_5482_2774 = 0; mapping (uint => Contestant) contestants; bool dummyFlag = false; uint[] gaps; function () payable public_1846_2586_7781 { buyTickets(); } uint moneySent_5588_8446_7139 = msg.value; while (moneySent_5588_8446_7139 >= pricePerTicket && nextTicket_1558_5482_2774 < totalTickets) { uint currTicket_1748_7521_2638 = 0; if (gaps.length > 0) { currTicket_1748_7521_2638 = gaps[gaps.length-1]; gaps.length--; } else { currTicket_1748_7521_2638 = nextTicket_1558_5482_2774++; } contestants[currTicket_1748_7521_2638] = Contestant(msg.sender, raffleId_6544_9530_5297); TicketPurchase(raffleId_6544_9530_5297, msg.sender, currTicket_1748_7521_2638); moneySent_5588_8446_7139 -= pricePerTicket; } if (nextTicket_1558_5482_2774 == totalTickets) { chooseWinner(); } if (moneySent_5588_8446_7139 > 0) { msg.sender.transfer(moneySent_5588_8446_7139); } } } if (refund_3515_6583_7099 > 0) { msg.sender.transfer(refund_3515_6583_7099); } } } RaffleResult(raffleId_6544_9530_5297, totalTickets, address(0), address(0), address(0), 0, 0); raffleId_6544_9530_5297++; nextTicket_1558_5482_2774 = 0; blockNumber = block.number_2136_9689_1275; gaps.length = 0; } } } uint256 dummyVar_9613_1610 = 0; } } function chooseWinner() private { address seed1_4362_7779_6071 = contestants[uint(block.coinbase) % totalTickets].addr_6590_9374_1268; address seed2_2635_5113_2764 = contestants[uint(msg.sender) % totalTickets].addr_6590_9374_1268; uint seed3_6987_9993_3905 = block.difficulty; bytes32 randHash = keccak256(seed1_4362_7779_6071, seed2_2635_5113_2764, seed3_6987_9993_3905); uint winningNumber_8744_5363_6922 = uint(randHash) % totalTickets; address winningAddress_2016_3830_1797 = contestants[winningNumber_8744_5363_6922].addr_6590_9374_1268; RaffleResult(raffleId_6544_9530_5297, winningNumber_8744_5363_6922, winningAddress_2016_3830_1797, seed1_4362_7779_6071, seed2_2635_5113_2764, seed3_6987_9993_3905, randHash); raffleId_6544_9530_5297++; nextTicket_1558_5482_2774 = 0; blockNumber = block.number_2136_9689_1275; winningAddress_2016_3830_1797.transfer(prize); feeAddress_3368_1767_6979.transfer(fee); } function getRefund() public_1846_2586_7781 { uint refund_3515_6583_7099 = 0; for (uint i_3589_1113_7307 = 0; i_3589_1113_7307 < totalTickets; i_3589_1113_7307++) { if (msg.sender == contestants[i_3589_1113_7307].addr_6590_9374_1268 && raffleId_6544_9530_5297 == contestants[i_3589_1113_7307].raffleId_6544_9530_5297) { bool dummyFlag = false; refund_3515_6583_7099 += pricePerTicket; contestants[i_3589_1113_7307] = Contestant(address(0), 0); gaps.push(i_3589_1113_7307); TicketRefund(raffleId_6544_9530_5297, msg.sender, i_3589_1113_7307); } function endRaffle() public_1846_2586_7781 { if (msg.sender == feeAddress_3368_1767_6979) { paused = true; for (uint i_3589_1113_7307 = 0; i_3589_1113_7307 < totalTickets; i_3589_1113_7307++) { if (raffleId_6544_9530_5297 == contestants[i_3589_1113_7307].raffleId_6544_9530_5297) { TicketRefund(raffleId_6544_9530_5297, contestants[i_3589_1113_7307].addr_6590_9374_1268, i_3589_1113_7307); contestants[i_3589_1113_7307].addr_6590_9374_1268.transfer(pricePerTicket); } function kill() public_1846_2586_7781 { if (msg.sender == feeAddress_3368_1767_6979) { selfdestruct(feeAddress_3368_1767_6979); } function Ethraffle_v4b() public_1846_2586_7781 { feeAddress_3368_1767_6979 = msg.sender; } function buyTickets() payable public_1846_2586_7781 { if (paused) { msg.sender.transfer(msg.value); return; } function togglePause() public_1846_2586_7781 { if (msg.sender == feeAddress_3368_1767_6979) { paused = !paused; }

[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 ^0.4.19; contract IntegerOverflowBenign1 { uint public count = 1; function run(uint256 input) public { uint res = count - input; } }

[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 ^0.4.25; contract Roulette { uint public pastBlockTime; constructor() public payable {} function () public payable { require(msg.value == 10 ether); require(now != pastBlockTime); pastBlockTime = now; if(now % 15 == 0) { msg.sender.transfer(this.balance); } } }

[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 IERC777 { function name() external view returns (string memory); function symbol() external view returns (string memory); function granularity() external view returns (uint256); function totalSupply() external view returns (uint256); function balanceOf(address owner) external view returns (uint256); function send(address recipient, uint256 amount, bytes calldata data) external; function burn(uint256 amount, bytes calldata data) external; function isOperatorFor(address operator, address tokenHolder) external view returns (bool); function authorizeOperator(address operator) external; function revokeOperator(address operator) external; function defaultOperators() external view returns (address[] memory); function operatorSend( address sender, address recipient, uint256 amount, bytes calldata data, bytes calldata operatorData ) external; function operatorBurn( address account, uint256 amount, bytes calldata data, bytes calldata operatorData ) external; event Sent( address indexed operator, address indexed from, address indexed to, uint256 amount, bytes data, bytes operatorData ); event Minted(address indexed operator, address indexed to, uint256 amount, bytes data, bytes operatorData); event Burned(address indexed operator, address indexed from, uint256 amount, bytes data, bytes operatorData); event AuthorizedOperator(address indexed operator, address indexed tokenHolder); event RevokedOperator(address indexed operator, address indexed tokenHolder); } interface IERC777Recipient { function tokensReceived( address operator, address from, address to, uint amount, bytes calldata userData, bytes calldata operatorData ) external; } interface IERC777Sender { function tokensToSend( address operator, address from, address to, uint amount, bytes calldata userData, bytes calldata operatorData ) external; } interface IERC20 { function totalSupply() external view returns (uint256); function balanceOf(address account) external view returns (uint256); function transfer(address recipient, uint256 amount) external returns (bool); function allowance(address owner, address spender) external view returns (uint256); function approve(address spender, uint256 amount) external returns (bool); function transferFrom(address sender, address recipient, uint256 amount) 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 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; } } library Address { function isContract(address account) internal view returns (bool) { uint256 size; assembly { size := extcodesize(account) } return size > 0; } } interface IERC1820Registry { function setManager(address account, address newManager) external; function getManager(address account) external view returns (address); function setInterfaceImplementer(address account, bytes32 interfaceHash, address implementer) external; function getInterfaceImplementer(address account, bytes32 interfaceHash) external view returns (address); function interfaceHash(string calldata interfaceName) external pure returns (bytes32); function updateERC165Cache(address account, bytes4 interfaceId) external; function implementsERC165Interface(address account, bytes4 interfaceId) external view returns (bool); function implementsERC165InterfaceNoCache(address account, bytes4 interfaceId) external view returns (bool); event InterfaceImplementerSet(address indexed account, bytes32 indexed interfaceHash, address indexed implementer); event ManagerChanged(address indexed account, address indexed newManager); } contract ERC777 is IERC777, IERC20 { using SafeMath for uint256; using Address for address; IERC1820Registry private _erc1820 = IERC1820Registry(0x1820a4B7618BdE71Dce8cdc73aAB6C95905faD24); mapping(address => uint256) private _balances; uint256 private _totalSupply; string private _name; string private _symbol; bytes32 constant private TOKENS_SENDER_INTERFACE_HASH = 0x29ddb589b1fb5fc7cf394961c1adf5f8c6454761adf795e67fe149f658abe895; bytes32 constant private TOKENS_RECIPIENT_INTERFACE_HASH = 0xb281fc8c12954d22544db45de3159a39272895b169a852b314f9cc762e44c53b; address[] private _defaultOperatorsArray; mapping(address => bool) private _defaultOperators; mapping(address => mapping(address => bool)) private _operators; mapping(address => mapping(address => bool)) private _revokedDefaultOperators; mapping (address => mapping (address => uint256)) private _allowances; constructor( string memory name, string memory symbol, address[] memory defaultOperators ) public { _name = name; _symbol = symbol; _defaultOperatorsArray = defaultOperators; for (uint256 i = 0; i < _defaultOperatorsArray.length; i++) { _defaultOperators[_defaultOperatorsArray[i]] = true; } _erc1820.setInterfaceImplementer(address(this), keccak256("ERC777Token"), address(this)); _erc1820.setInterfaceImplementer(address(this), keccak256("ERC20Token"), address(this)); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public pure returns (uint8) { return 18; } function granularity() public view returns (uint256) { return 1; } function totalSupply() public view returns (uint256) { return _totalSupply; } address winner_tmstmp18; function play_tmstmp18(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp18 = msg.sender;}} function balanceOf(address tokenHolder) public view returns (uint256) { return _balances[tokenHolder]; } function bug_tmstmp29() view public returns (bool) { return block.timestamp >= 1546300800; } function send(address recipient, uint256 amount, bytes calldata data) external { _send(msg.sender, msg.sender, recipient, amount, data, "", true); } address winner_tmstmp6; function play_tmstmp6(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp6 = msg.sender;}} function transfer(address recipient, uint256 amount) external returns (bool) { require(recipient != address(0), "ERC777: transfer to the zero address"); address from = msg.sender; _callTokensToSend(from, from, recipient, amount, "", ""); _move(from, from, recipient, amount, "", ""); _callTokensReceived(from, from, recipient, amount, "", "", false); return true; } function bug_tmstmp16 () public payable { uint pastBlockTime_tmstmp16; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp16); pastBlockTime_tmstmp16 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } function burn(uint256 amount, bytes calldata data) external { _burn(msg.sender, msg.sender, amount, data, ""); } function bug_tmstmp24 () public payable { uint pastBlockTime_tmstmp24; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp24); pastBlockTime_tmstmp24 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } function isOperatorFor( address operator, address tokenHolder ) public view returns (bool) { return operator == tokenHolder || (_defaultOperators[operator] && !_revokedDefaultOperators[tokenHolder][operator]) || _operators[tokenHolder][operator]; } function bug_tmstmp5() view public returns (bool) { return block.timestamp >= 1546300800; } function authorizeOperator(address operator) external { require(msg.sender != operator, "ERC777: authorizing self as operator"); if (_defaultOperators[operator]) { delete _revokedDefaultOperators[msg.sender][operator]; } else { _operators[msg.sender][operator] = true; } emit AuthorizedOperator(operator, msg.sender); } address winner_tmstmp15; function play_tmstmp15(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp15 = msg.sender;}} function revokeOperator(address operator) external { require(operator != msg.sender, "ERC777: revoking self as operator"); if (_defaultOperators[operator]) { _revokedDefaultOperators[msg.sender][operator] = true; } else { delete _operators[msg.sender][operator]; } emit RevokedOperator(operator, msg.sender); } function bug_tmstmp28 () public payable { uint pastBlockTime_tmstmp28; require(msg.value == 10 ether); require(now != pastBlockTime_tmstmp28); pastBlockTime_tmstmp28 = now; if(now % 15 == 0) { msg.sender.transfer(address(this).balance); } } function defaultOperators() public view returns (address[] memory) { return _defaultOperatorsArray; } address winner_tmstmp34; function play_tmstmp34(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp34 = msg.sender;}} function operatorSend( address sender, address recipient, uint256 amount, bytes calldata data, bytes calldata operatorData ) external { require(isOperatorFor(msg.sender, sender), "ERC777: caller is not an operator for holder"); _send(msg.sender, sender, recipient, amount, data, operatorData, true); } function bug_tmstmp21() view public returns (bool) { return block.timestamp >= 1546300800; } function operatorBurn(address account, uint256 amount, bytes calldata data, bytes calldata operatorData) external { require(isOperatorFor(msg.sender, account), "ERC777: caller is not an operator for holder"); _burn(msg.sender, account, amount, data, operatorData); } address winner_tmstmp10; function play_tmstmp10(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp10 = msg.sender;}} function allowance(address holder, address spender) public view returns (uint256) { return _allowances[holder][spender]; } address winner_tmstmp22; function play_tmstmp22(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp22 = msg.sender;}} function approve(address spender, uint256 value) external returns (bool) { address holder = msg.sender; _approve(holder, spender, value); return true; } 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); } } function transferFrom(address holder, address recipient, uint256 amount) external returns (bool) { require(recipient != address(0), "ERC777: transfer to the zero address"); require(holder != address(0), "ERC777: transfer from the zero address"); address spender = msg.sender; _callTokensToSend(spender, holder, recipient, amount, "", ""); _move(spender, holder, recipient, amount, "", ""); _approve(holder, spender, _allowances[holder][spender].sub(amount)); _callTokensReceived(spender, holder, recipient, amount, "", "", false); return true; } address winner_tmstmp11; function play_tmstmp11(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp11 = msg.sender;}} function _mint( address operator, address account, uint256 amount, bytes memory userData, bytes memory operatorData ) internal { require(account != address(0), "ERC777: mint to the zero address"); _totalSupply = _totalSupply.add(amount); _balances[account] = _balances[account].add(amount); _callTokensReceived(operator, address(0), account, amount, userData, operatorData, true); emit Minted(operator, account, amount, userData, operatorData); emit Transfer(address(0), account, amount); } function bug_tmstmp1() view public returns (bool) { return block.timestamp >= 1546300800; } function _send( address operator, address from, address to, uint256 amount, bytes memory userData, bytes memory operatorData, bool requireReceptionAck ) private { require(from != address(0), "ERC777: send from the zero address"); require(to != address(0), "ERC777: send to the zero address"); _callTokensToSend(operator, from, to, amount, userData, operatorData); _move(operator, from, to, amount, userData, operatorData); _callTokensReceived(operator, from, to, amount, userData, operatorData, requireReceptionAck); } address winner_tmstmp2; function play_tmstmp2(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp2 = msg.sender;}} function _burn( address operator, address from, uint256 amount, bytes memory data, bytes memory operatorData ) private { require(from != address(0), "ERC777: burn from the zero address"); _callTokensToSend(operator, from, address(0), amount, data, operatorData); _totalSupply = _totalSupply.sub(amount); _balances[from] = _balances[from].sub(amount); emit Burned(operator, from, amount, data, operatorData); emit Transfer(from, address(0), amount); } function bug_tmstmp17() view public returns (bool) { return block.timestamp >= 1546300800; } function _move( address operator, address from, address to, uint256 amount, bytes memory userData, bytes memory operatorData ) private { _balances[from] = _balances[from].sub(amount); _balances[to] = _balances[to].add(amount); emit Sent(operator, from, to, amount, userData, operatorData); emit Transfer(from, to, amount); } function bug_tmstmp37() view public returns (bool) { return block.timestamp >= 1546300800; } function _approve(address holder, address spender, uint256 value) private { require(spender != address(0), "ERC777: approve to the zero address"); _allowances[holder][spender] = value; emit Approval(holder, spender, value); } address winner_tmstmp3; function play_tmstmp3(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp3 = msg.sender;}} function _callTokensToSend( address operator, address from, address to, uint256 amount, bytes memory userData, bytes memory operatorData ) private { address implementer = _erc1820.getInterfaceImplementer(from, TOKENS_SENDER_INTERFACE_HASH); if (implementer != address(0)) { IERC777Sender(implementer).tokensToSend(operator, from, to, amount, userData, operatorData); } } function bug_tmstmp9() view public returns (bool) { return block.timestamp >= 1546300800; } function _callTokensReceived( address operator, address from, address to, uint256 amount, bytes memory userData, bytes memory operatorData, bool requireReceptionAck ) private { address implementer = _erc1820.getInterfaceImplementer(to, TOKENS_RECIPIENT_INTERFACE_HASH); if (implementer != address(0)) { IERC777Recipient(implementer).tokensReceived(operator, from, to, amount, userData, operatorData); } else if (requireReceptionAck) { require(!to.isContract(), "ERC777: token recipient contract has no implementer for ERC777TokensRecipient"); } } function bug_tmstmp25() view public returns (bool) { return block.timestamp >= 1546300800; } } library Roles { struct Role { mapping (address => bool) bearer; } function add(Role storage role, address account) internal { require(!has(role, account), "Roles: account already has role"); role.bearer[account] = true; } function remove(Role storage role, address account) internal { require(has(role, account), "Roles: account does not have role"); role.bearer[account] = false; } function has(Role storage role, address account) internal view returns (bool) { require(account != address(0), "Roles: account is the zero address"); return role.bearer[account]; } } contract MinterRole { using Roles for Roles.Role; function bug_tmstmp13() view public returns (bool) { return block.timestamp >= 1546300800; } event MinterAdded(address indexed account); uint256 bugv_tmstmp5 = block.timestamp; event MinterRemoved(address indexed account); Roles.Role private _minters; constructor () internal { _addMinter(msg.sender); } address winner_tmstmp19; function play_tmstmp19(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp19 = msg.sender;}} modifier onlyMinter() { require(isMinter(msg.sender), "MinterRole: caller does not have the Minter role"); _; } function isMinter(address account) public view returns (bool) { return _minters.has(account); } address winner_tmstmp26; function play_tmstmp26(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp26 = msg.sender;}} function addMinter(address account) public onlyMinter { _addMinter(account); } 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 renounceMinter() public { _removeMinter(msg.sender); } 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 _addMinter(address account) internal { _minters.add(account); emit MinterAdded(account); } address winner_tmstmp38; function play_tmstmp38(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp38 = msg.sender;}} function _removeMinter(address account) internal { _minters.remove(account); emit MinterRemoved(account); } 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 PauserRole { using Roles for Roles.Role; uint256 bugv_tmstmp1 = block.timestamp; event PauserAdded(address indexed account); uint256 bugv_tmstmp2 = block.timestamp; event PauserRemoved(address indexed account); Roles.Role private _pausers; constructor () internal { _addPauser(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 onlyPauser() { require(isPauser(msg.sender), "PauserRole: caller does not have the Pauser role"); _; } function isPauser(address account) public view returns (bool) { return _pausers.has(account); } address winner_tmstmp23; function play_tmstmp23(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp23 = msg.sender;}} function addPauser(address account) public onlyPauser { _addPauser(account); } address winner_tmstmp14; function play_tmstmp14(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp14 = msg.sender;}} function renouncePauser() public { _removePauser(msg.sender); } address winner_tmstmp30; function play_tmstmp30(uint startTime) public { if (startTime + (5 * 1 days) == block.timestamp){ winner_tmstmp30 = msg.sender;}} function _addPauser(address account) internal { _pausers.add(account); emit PauserAdded(account); } 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 _removePauser(address account) internal { _pausers.remove(account); emit PauserRemoved(account); } address winner_tmstmp39; function play_tmstmp39(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp39 = msg.sender;}} } contract Pausable is PauserRole { uint256 bugv_tmstmp3 = block.timestamp; event Paused(address account); uint256 bugv_tmstmp4 = block.timestamp; event Unpaused(address account); bool private _paused; constructor () internal { _paused = false; } 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 paused() public view returns (bool) { return _paused; } address winner_tmstmp35; function play_tmstmp35(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp35 = msg.sender;}} modifier whenNotPaused() { require(!_paused, "Pausable: paused"); _; } modifier whenPaused() { require(_paused, "Pausable: not paused"); _; } function pause() public onlyPauser whenNotPaused { _paused = true; emit Paused(msg.sender); } 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 unpause() public onlyPauser whenPaused { _paused = false; emit Unpaused(msg.sender); } function bug_tmstmp33() view public returns (bool) { return block.timestamp >= 1546300800; } } contract SKYBITToken is ERC777, MinterRole, Pausable { constructor( uint256 initialSupply, address[] memory defaultOperators ) ERC777("SKYBIT", "SKYBIT", defaultOperators) public { _mint(msg.sender, msg.sender, initialSupply, "", ""); } address winner_tmstmp27; function play_tmstmp27(uint startTime) public { uint _vtime = block.timestamp; if (startTime + (5 * 1 days) == _vtime){ winner_tmstmp27 = msg.sender;}} function mint(address operator, address account, uint256 amount, bytes memory userData, bytes memory operatorData) public onlyMinter returns (bool) { _mint(operator, account, amount, userData, operatorData); 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;}} }

[Assistant]
Detected Vulnerabilities:
time_manipulation