eth-challenge-all-in-one-base

An all-in-one web docker for building ethereum contract challenges in capture the flag (CTF).

Getting Started

Quick Demo

Use the following command to run a quick demo:

docker run -it -p 20000:80 -e FLAG=slctf{flag} vvbbnn00/eth-challenge-all-in-one-base:beta

Then you can access the challenge at http://localhost:20000/challenge.

To get eth from faucet, you can visit http://localhost:20000/.

The JSON RPC API is available at http://localhost:20000/jsonrpc.

Mention that the api is not compatible with Remix!

Usage

Create challenge project based on example-deployment

The build.py script will compile the contracts and generate the challenge for you. Before building the image, please run it first.

python build.py

If you miss the requirements, you can install them by running:

pip install -r requirements.txt

In the challenge dictionary, you can modify the challenges.

• The contracts directory is where you should code the challenge contract, specifically, you need to implement isSolved() function to check if it is solved.
• The challenge.yml file is the config for specifying challenge description, flag, contract name, constructor, gas limit etc. Refer to the comments in this file for more details.

You can build multi-contract challenges by deploying contracts in a setup contract's constructor

Build your challenge docker

Use the following command to build a docker image:

cd example-deployment/
docker image build -t <your-challenge-name> .

Then you can run the docker image:

docker run -p port:80 --env FLAG=<your-flag> <your-challenge-name>

Acknowledgements

Many thanks to JetBrains for providing their excellent tools and an open source license to support the development of this project.

This project is developed based on eth-challenge-base, thanks a lot.

License

Distributed under the MIT License. See LICENSE for more information.