Some contracts will simply not take your money ¯\_(ツ)_/¯

The goal of this level is to make the balance of the contract greater than zero.

Things that might help:

  • Fallback methods
  • Sometimes the best way to attack a contract is with another contract.
  • See the "?" page above, section “Beyond the console”
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract Force {/*

                   MEOW ?
         /\_/\   /
    ____/ o o \
  /~____  =ø= /


💡 In solidity, for a contract to be able to receive ether, the fallback function must be marked payable.
However, there is no way to stop an attacker from sending ether to a
contract by self destroying. Hence, it is important not to count on the
invariant address(this).balance == 0 for any contract logic.