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You Should Know:
Android bug bounty hunting is a lucrative field for cybersecurity enthusiasts. Here’s a detailed guide to help you get started, including practical commands, tools, and steps to identify vulnerabilities in Android apps.
1. Setting Up Your Environment
Before diving into bug hunting, set up a testing environment:
– Android Emulator (Genymotion or Android Studio)
sudo apt install virtualbox genymotion
– ADB (Android Debug Bridge) for device communication:
sudo apt install adb adb devices List connected devices
2. Reverse Engineering APKs
Use APKTool to decompile APK files:
sudo apt install apktool apktool d target.apk -o output_dir
For JADX (Java decompiler):
sudo apt install jadx jadx-gui target.apk
3. Analyzing App Components
Check AndroidManifest.xml for exposed components:
grep -i "exported=true" AndroidManifest.xml
4. Dynamic Analysis with Frida
Inject JavaScript into running apps for runtime manipulation:
pip install frida-tools frida-ps -U List running apps frida -U -l script.js -f com.target.app
5. Network Traffic Inspection
Use Burp Suite or Mitmproxy for intercepting HTTP/HTTPS traffic:
mitmproxy -p 8080
Configure Android proxy settings to route traffic.
6. Common Vulnerabilities to Hunt For
- Insecure Storage (Check SharedPreferences, SQLite databases)
adb shell "run-as com.target.app cat /data/data/com.target.app/shared_prefs/.xml"
- Improper Certificate Validation (Bypass SSL pinning with Frida scripts)
- Exported Activities leading to unauthorized access.
7. Automating Scans with MobSF
Mobile Security Framework (MobSF) for static/dynamic analysis:
docker pull opensecurity/mobile-security-framework-mobsf docker run -it -p 8000:8000 opensecurity/mobile-security-framework-mobsf
Prediction
As Android apps grow in complexity, zero-day vulnerabilities in third-party libraries and misconfigured cloud backends will dominate bug bounty programs. Automation tools like Frida and MobSF will become essential for hunters.
What Undercode Say
Mastering Android bug bounty requires persistence. Start with open-source apps, document findings, and contribute to the community. Always stay updated with OWASP Mobile Top 10.
Expected Output:
- A structured report with:
- Vulnerability details (CWE-ID, CVSS score).
- Proof-of-concept (PoC) code/commands.
- Mitigation steps (e.g., disabling `exported` flags).
URLs (if needed):
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References:
Reported By: Muhamad Rizki – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
