33 lines
722 B
Solidity
33 lines
722 B
Solidity
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/*
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* @source: https://ethernaut.zeppelin.solutions/level/0xf70706db003e94cfe4b5e27ffd891d5c81b39488
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* @author: Alejandro Santander
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* @vulnerable_at_lines: 24
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*/
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pragma solidity ^0.4.18;
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contract Reentrance {
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mapping(address => uint) public balances;
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function donate(address _to) public payable {
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balances[_to] += msg.value;
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}
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function balanceOf(address _who) public view returns (uint balance) {
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return balances[_who];
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}
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function withdraw(uint _amount) public {
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if(balances[msg.sender] >= _amount) {
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// <yes> <report> REENTRANCY
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if(msg.sender.call.value(_amount)()) {
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_amount;
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}
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balances[msg.sender] -= _amount;
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}
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}
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function() public payable {}
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}
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