Paradigm CTF 2022

Installing

Prerequisites

• Docker
• mpwn
• Python 3

Configuration

You'll need to set the following environment variables:

• ETH_RPC_URL to a valid Ethereum JSON-RPC endpoint
• PYTHONPATH to point to mpwn

You'll also need to manually install the following:

• pip install yaml ecdsa pysha3 web3 cairo-lang

Usage

Build everything

./build.sh

Run a challenge

Running a challenge will open a port which users will nc to. For Ethereum/Starknet related challenges, an additional port must be supplied so that users can connect to the Ethereum/Starknet node

./run.sh random 31337 8545

On another terminal:

nc localhost 31337

When prompted for the ticket, use any value

$ nc localhost 31337
1 - launch new instance
2 - kill instance
3 - get flag
action? 1
ticket please: ticket

your private blockchain has been deployed
it will automatically terminate in 30 minutes
here's some useful information

Running the autosolver

./solve.sh