ctf-blockchain/src/MetaTrustCTF/ECDSA/Exploit.s.sol at main · minaminao/ctf-blockchain · GitHub

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// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.19;

import {Script} from "forge-std/Script.sol";

// forge script src/MetaTrustCTF/ECDSA/Exploit.s.sol:ExploitScript -vvvvv --private-key $PRIVATE_KEY --rpc-url $RPC_URL

contract ExploitScript is Script {
    function run() public {
        vm.startBroadcast();
        address verifyAddr = 0x4A4A7729Fdb49Da1969606631DbC9F201e260A2B;
        uint256 r = 0x8ca09723f24865bbc3fd194cc60cc95a77943ed5b38671887007072ba917a5ea;
        uint256 s = 0xb36a63f0329d0ad45be9bbdea6f62508a9add0d79c51c97adc11dfb720cad37a;
        IVerifier(verifyAddr).solve(r, s);
        vm.stopBroadcast();
    }
}

interface IVerifier {
    function solve(uint256 r, uint256 s) external;
}

// Flag: 0x7ed74b5441f5b7fc85a323ffe63f5e0b