Internship Project for Codec Technologies
A safe, educational simulation of ransomware encryption & decryption! 🔒
Demonstrates AES-based file encryption in a controlled sandbox environment.
_{Tech Stack: Python, pyAesCrypt, Logging}

Developed as part of my internship with Codec Technologies, the Custom Ransomware Simulation is a project designed to demonstrate ransomware-like behavior in a safe sandbox.
It showcases how ransomware encrypts and decrypts files, with proper logging and key handling, without putting real system files at risk.

• 🔑 Key Generation – Secure random key creation saved in key.key
• 🔒 File Encryption – Encrypts sandbox files with AES-256
• 🔓 File Decryption – Decrypt files using the same key
• 🗂️ Sandbox Environment – Works only on test files (no risk to your system)
• 📜 Logging – Tracks every action in simulation.log
• 🧪 Unit Tests – Includes test cases for safe verification

• Python 3.8+
• Virtual environment recommended

# Clone and setup
git clone https://github.com/CodeWithTanim/Custom-Ransomware-Simulation.git
cd Custom-Ransomware-Simulation
python -m venv venv
venv\Scripts\activate    # Windows
source venv/bin/activate # Linux/macOS

# Install requirements
pip install -r requirements.txt

# Run the app
python src/main.py

Custom-Ransomware-Simulation/
│
├── README.md                  ← Project documentation
├── requirements.txt           ← Python dependencies
│
├── docs/                      ← Documentation & Screenshots
│   ├── project_overview.md
│   ├── encryption_demo.md
│   └── screenshots/
│       ├── encrypt_demo.png
│       └── decrypt_demo.png
│
├── src/                       ← Source Code
│   ├── main.py                ← Main program
│   ├── encryptor.py           ← Encryption logic
│   ├── decryptor.py           ← Decryption logic
│   └── utils.py               ← Key generation & logging
│
├── tests/                     ← Unit Tests
│   ├── test_encryptor.py
│   ├── test_decryptor.py
│   └── test_utils.py
│
└── sandbox/                   ← Safe testing folder
    ├── sample_text.txt
    └── sample_files/
        └── sample1.txt

• Understood ransomware workflow (key, encrypt, decrypt)
• Implemented AES-256 encryption in Python using pyAesCrypt
• Practiced secure coding with logging and sandboxing
• Gained hands-on with project structure & testing
• Learned professional GitHub documentation

MD SAMIUR RAHMAN TANIM Intern at Codec Technologies 🔗 GitHub | LinkedIn

• Thanks to Codec Technologies for the internship opportunity
• Python & pyAesCrypt community for excellent documentation

Pull requests are welcome! Found bugs or improvements? Fork the repo and submit a PR.