Guzbyte-tech

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

contract StudentRecord {

    address owner;

    constructor () {
        owner = msg.sender;
    }

Guzbyte-tech

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;

contract StakeEth_2 {

    //function stake

    //Multiple User can stake.
    /**
    * stakes => [user][amount, duration, interest]

Guzbyte-tech

import { ethers } from "hardhat";
const helpers = require("@nomicfoundation/hardhat-network-helpers");

async function main() {

    const ROUTER_ADDRESS = "0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D";
    const USDC = "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48";
    const UNI = "0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984";

    const TOKEN_HOLDER = "0xf584F8728B874a6a5c7A8d4d387C9aae9172D621";

Guzbyte-tech

// SPDX-License-Identifier: SEE LICENSE IN LICENSE
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC721/IERC721.sol";

contract EventOrganizer {
    address nftCollectionAddress;
    uint256 public totalEventsCreated;

    constructor() {}

Guzbyte-tech

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

// Assuming VIP_Bank is imported or defined in the same project
import "./VIP_Bank.sol";

contract CombinedExploit {
    VIP_Bank public bank;
    address public manager;

Guzbyte-tech

// SPDX-License-Identifier: SEE LICENSE IN LICENSE
pragma solidity 0.8.24;

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

contract ChallengeTwoTest is Test {

    ChallengeTwo chal;
    uint8 private attemptCounter = 0;

Guzbyte-tech

// SPDX-License-Identifier: UNKNOWN
pragma solidity ^0.8.17;

import {Web3BridgeCXIPool} from "./web3bridgecxipool.sol";

interface IFlashLoanEtherReceiver {
    function execute() external payable;
}

contract Exploiter is IFlashLoanEtherReceiver {

Guzbyte-tech

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "./ErrorLib.sol";
import "./IPriceOracle.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

interface IFlashLoanReceiver {
    function executeOperation(
        address token,

Guzbyte-tech

1. Solidity version is not the latest 0.8.0
2. Duplicate Address Check in enterRaffle is not Gas efficient

• No address zero within the players.
• Time Check tto make sure they enter within the acurate time.

 for (uint256 i = 0; i < players.length - 1; i++) {
      for (uint256 j = i + 1; j < players.length; j++) {
          require(players[i] != players[j], "PuppyRaffle: Duplicate player");
      }

Guzbyte-tech

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.19;

import "@openzeppelin/token/ERC20/IERC20.sol";
import "@openzeppelin/token/ERC20/utils/SafeERC20.sol";
import "@openzeppelin/security/ReentrancyGuard.sol";
import "@openzeppelin/access/Ownable.sol";
import "@openzeppelin/security/Pausable.sol";

/**