contracthacker

A platform for ethereum smart contract hacking CTF challenges. Test

Set up

Add your node set up in the setup.sh.

Add your wallets mnemonic in the run.py file on line 49.

Then run docker-compose up. This will start the 3 challenges; StealFromMe, Bank and Charity.

Adding a new challenge

To add a new challenge, decide on a challenge name, it can only be alphanumeric characters (no spaces). In this example I will use the name coolchallenge.

Make a new folder under projects named your challenge name, and then make a folder under this named contracts and add your solidity contract file here, in this example coolchallenge.sol. projects/coolchallenge/contracts/coolchallenge.sol

Open the contracts.json file and add an entry for the contract, in this example:

    "coolchallenge":{
        "name":"coolchallenge",
        "source":"coolchallenge/contracts/coolchallenge.sol",
        "objective":{"short":"emptycontract","long":"Empty the contract for funds."},
        "funding":"0.1 ether",
        "flag":"CTF{this_is_cool_challenge}"
    }

For now only the objective emptycontract is supported, if you wish to add more, please open a pull request.

Add the challenge to the docker-compose.yml file, for this example with port 8005, eventcode 1234 and name:

  coolchallenge:
    build: .
    ports:
    - "8005:8005"
    environment:
      - port=8005
      - eventcode=1234
      - contractname=coolchallenge

and perform the commands docker-compose down and then docker-compose up, then the challenge should be deployed on the specified port.