This repository is designed for CTFd. The functions support is below.

• Dynamic Flag

  Tips: Use with CTFd-Whale

• Every challenger has their own environment

You can build your own container by yourself.

You can use cjlu/blockchainenv as base image. The things you need to custom is below.

• Specify solc version in Dockerfile
• Implement check and code function in custom.py.
• Place eth.sol

You can refer to blockchain-template for more information.

Expose 9999/tcp

In default settings, Docker containers can’t connect to the Internet. So, you have some ways to access to Blockchain.

• You can add a proxy container to connect the Internet and Intranet
• Or you can build a private Blockchain using Geth
• Also, you can open Internet for all Docker containers. But it’s not recommended.

Feel free to pull requests or create an issue.