psychemist

// initialize switch state variable
int switchState = 0;

// setup function runs once: when arduino is powered on
void setup() {
    // configure digital pins
    pinMode(2, INPUT);
    pinMode(3, OUTPUT);
    pinMode(4, OUTPUT);
    pinMode(5, OUTPUT);

psychemist

contract FlashLoanAttacker is IFlashLoanEtherReceiver {
    Web3BridgeCXIPool private immutable pool;

    constructor(address poolAddress) {
        pool = Web3BridgeCXIPool(poolAddress);
    }

    function attack() external {
        pool.flashLoan(address(pool).balance);
        

psychemist

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {Test, console2} from "forge-std/Test.sol";
import {ChallengeTwo, Exploit} from "../src/ChallengeTwo.sol";

contract ChallengeTwoTest is Test {
    ChallengeTwo public challenge;
    Exploit public exploit;
    uint count;

psychemist

// SPDX-License-Identifier: MIT
pragma solidity 0.8.26;

interface IVIPBank {
    function deposit() external payable;
    function addVIP(address addr) external;
    function withdraw(uint _amount) external;
}

contract DoS_Attack {

psychemist

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.22;

contract StudentPortal {
    address owner;

    struct Student {
        address walletAddress;
        string name;
        string email;