HellCat CyberSec Fundamentals

Welcome to hellcat-cybersec-fundamental — a practical, hands-on learning series covering the fundamentals of cybersecurity, offensive techniques, and malware engineering.

This repository is designed for educational purposes, with real code, real labs, and real-world logic — but zero bullshit.

What you’ll find here

• Scripting and system-level command execution
• Network attacks (MITM, ARP spoof, scanning)
• Basic malware techniques (RAT, keylogger, packing)
• Detection and self-protection principles

Each folder is a standalone module with:

• Source code
• Step-by-step guides
• Blue team insights when relevant

📂 Modules

• 00-intro — Intro to CLI, permissions, scripting basics
• 01-basics — File operations, basic Python, command usage
• 02-network-ops — Interfaces, port scanning, sniffing
• 03-malware-basics — Encoded payloads, keyloggers, screenshotting, exfiltration
• 04-keyloggers-trojans — Modular malware simulation (keylogger, exfil, persistence)
• 05-misc — Extra tools: fake data gen, DNS resolver, log spammer

🚀 Quick Start

# Clone the repo
git clone https://github.com/HellCatLabs/hellcat-cybersec-fundamental.git
cd hellcat-cybersec-fundamental

# Install all dependencies
pip install -r requirements.txt

# Run tests
pytest tests/ -v

🧪 Tests

The project includes an automated test suite covering all modules:

pytest tests/ -v

Tests verify function behavior, CLI argument parsing, and output format. Scripts requiring scapy or pynput are automatically skipped if not installed.

⚠️ Legal Notice

This project is intended for educational and defensive purposes only.
Do not use these techniques on any system you do not own or have explicit authorization to test.

🐾 Maintained by HellCatLabs

Created by @Sn0wAlice for cybersecurity learners, SOC analysts, and future reverse engineers.