🎮 Minecraft Forge Mod: Command Execution PoC (Educational Use Only) 🚨

⚠️ Critical Warning

This is a proof-of-concept (PoC) Minecraft Forge mod for educational and security research purposes only 📚. It shows how untrusted mods can execute harmful code. DO NOT use this on systems without explicit permission or for malicious purposes! 🚫 Misuse could violate laws or cause serious harm. 😱

🌟 Overview

This PoC mod demonstrates the dangers of installing unverified Minecraft Forge mods. When loaded in the mods folder, it runs a harmless command to open the Windows Calculator (calc.exe) during initialization, proving how easily mods can execute system commands. 🖥️

🎯 Purpose

• 🕵️‍♂️ Raise Awareness: Highlight the risks of unverified mods in Minecraft.
• 🔍 Expose Weaknesses: Show how mod loaders like Forge lack sandboxing.
• 📖 Educate: Teach modders, server admins, and players about code execution risks.

⚖️ Ethical & Legal Guidelines

🤝 Ethical Use

• ✅ Informed Consent: Only test on systems you own or have explicit permission to use.
• 🔔 Transparency: Never hide or obfuscate the mod’s behavior.
• 📚 Educational Only: Use in controlled environments for learning or demos.
• 🛑 No Harm: Do not deceive, exploit, or harm others with this mod.

📜 Legal Disclaimer

• This mod is for educational and research purposes only.
• The author is not responsible for misuse, damage, or illegal activities.
• Use and distribution are at your own risk, with no warranties provided.

🔐 Security Insights

This mod reveals critical security risks in modded Minecraft:

• 🚨 Untrusted Mods: Installing random mods can lead to malicious code execution.
• ⚙️ Mod Loader Vulnerabilities: Forge’s lifecycle events allow unrestricted code execution.
• 😈 Attack Vectors: Malicious mods could run scripts, download payloads, or destroy files.

🛠️ How It Works

During Forge’s mod initialization, the mod:

1. Hooks into the FMLClientSetupEvent. 🔗
2. Uses Java’s Runtime.getRuntime().exec() to run:

   Runtime.getRuntime().exec("cmd /K calc");

3. On Windows, this opens the Calculator app as a visible proof of command execution. 🖥️

⚠️ Potential Risks

While this example is harmless, the same technique could:

• 🦠 Execute malicious scripts or malware.
• 📥 Download and run harmful payloads from the internet.
• 🗑️ Modify or delete critical system files.

📦 Installation (Test Environment Only)

⚠️ Use only in a secure, isolated test environment! 🧪

1. Set Up Forge:
   • Install Minecraft with the correct Forge version. ⚒️
2. Build the Mod:
   • Compile the mod into a .jar file using a Java environment and Forge dependencies. 🛠️
3. Deploy:
   • Place the .jar in the mods folder of your test Minecraft instance. 📥
4. Launch Minecraft:
   • Start the game and watch the Calculator app open as proof of execution. 🎉
5. Analyze:
   • Review the mod’s code to understand how it triggers commands. 📖

🧑‍🔬 Responsible Use

✅ Allowed Use Cases

• 🏫 Security workshops or classroom demos.
• 🧪 Controlled testing in isolated environments (e.g., VMs, Docker).
• 🎥 Educational content creation (e.g., blogs, videos, tutorials).

🚫 Prohibited Actions

• 🚫 Sharing the mod in public modpacks or servers.
• 🙅‍♂️ Using it to trick or harm users.
• 🕵️ Hiding the mod’s functionality or intent.

📚 Resources

• 🔗 OWASP: Arbitrary Code Execution
• ⚒️ Minecraft Forge Documentation
• 🛡️ Java Runtime.exec() Security Risks

🚨 Final Warning

This PoC is not a toy! 🎭 It exposes a real vulnerability in modded Minecraft setups. Use it to educate and protect, not to exploit. Stay safe and always vet mods before installing! 🛡️

👤 Author

Crafted by a game mod security researcher. 🧑‍💻
Contributions are welcome but must follow ethical and legal guidelines. Submit ideas via pull requests to improve the educational value! 💡

💬 Stay Secure!

Protect your Minecraft experience by auditing mods and learning from projects like this. Happy modding, and stay safe! 🔒