Python in CTFs - PicoCTF

Overview

This repository contains Python scripts and solutions for various PicoCTF challenges. It serves as a resource for learning and applying Python in Capture The Flag (CTF) competitions, focusing on cryptography, reverse engineering, forensics, and automation.

Contents

• 🔹 Cryptography – Solving encryption/decryption challenges.
• 🔹 Reverse Engineering – Analyzing binaries with Python.
• 🔹 Forensics – Extracting hidden data from files.
• 🔹 Exploitation – Automating interactions with remote services.

Getting Started

Prerequisites

Ensure you have Python installed:

python3 --version

If it is not installed, get it from Python.org.

Clone the Repository

git clone https://github.com/Ephraim67/Python-in-CTFs-PiccoCTF.git
cd Python-in-CTFs-PiccoCTF

Install Dependencies

If any challenge requires additional libraries, install them using:

pip install -r requirements.txt

Run a Script

python3 challenge_script.py

Examples

🔹 Basic Cryptography Script

from base64 import b64decode

encoded = "U2VjcmV0IEZsYWc="  # Example base64 encoded string
decoded = b64decode(encoded).decode()
print(decoded)  # Output: Secret Flag

🔹 Automating a Netcat Connection

import socket

host, port = "jupiter.challenges.picoctf.org", 64287
s = socket.socket()
s.connect((host, port))
print(s.recv(1024).decode())  # Receive and print flag
s.close()

Contributing

If you'd like to contribute:

1. Fork the repo
2. Create a new branch: git checkout -b my-feature
3. Commit your changes: git commit -m "Added new challenge solution"
4. Push and open a Pull Request

Resources

• 🔗 PicoCTF Website
• 📜 Python Docs
• 🛠️ Cybersecurity Learning Resources

License

This project is open-source and licensed under the MIT License.