NestJS Application for Retrieving Arbitrum Airdrop from Compromised Ethereum Wallets

This NestJS application provides a solution for retrieving Arbitrum airdrops from compromised Ethereum wallets. It will attempt and deposit gas tokens, perform the claim and the withdraw all in the same block, so that sweeper bots don't get a chance to steal gas tokens or the claimed $ARB as they won't be aware of it yet.

Requirements

• Node.js version 12 or higher
• Safe Ethereum wallet with private key
• Compromised Ethereum wallet with private key
• Arbitrum airdrop contract address and ABI
• ERC20 token contract address and ABI
• RPC node URL

Getting Started

1. Clone the repository
2. Install dependencies using yarn install
3. Update the environment variables in a .env file based on the provided .env.example file
4. Update the main.ts file with the appropriate values for the target block number, $ARB ERC20 token address, own Ethereum wallet address, and private keys for both the own and compromised wallets
5. Run the application using yarn start

Using the arbitrumService

The arbitrum.service.ts file provides methods for interacting with the Arbitrum blockchain and executing transactions. These methods include:

• getWeb3Instance(): Returns the current Web3 instance
• getCurrentBlockNumber(): Returns the current block number on the Ethereum blockchain via a multicall contract on Arbitrum
• executeTransaction(): Executes a transaction on the Ethereum blockchain using a private key, to address, value, and gas price
• getERC20TokenContract(): Returns a contract instance for a given ERC20 token address
• transferERC20Token(): Transfers ERC20 tokens from one address to another using a private key, token address, to address, value, and gas price
• executeContractMethod(): Executes a method on a smart contract using a private key, contract address, ABI, method name, gas price, and optional method arguments
• getGasPrice(): Returns the current gas price on the Arbitrum blockchain

Contributing

Contributions to this project are welcome. Please create a pull request with your changes.

License

This project is licensed under the MIT license. See the LICENSE file for more details.