Ethernaut Level 13: Gatekeeper One
Solidity Code
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
import '@openzeppelin/contracts/math/SafeMath.sol';
contract GatekeeperOne {
using SafeMath for uint256;
address public entrant;
modifier gateOne() {
require(msg.send...
baguioni.hashnode.dev3 min read