Android Reverse Engineering & API Extraction — Claude Code s...

[carlospolop]

🤖 Automated Content Update

This PR was automatically generated by the HackTricks News Bot based on a technical blog post.

📝 Source Information

• Blog URL: https://github.com/SimoneAvogadro/android-reverse-engineering-skill
• Blog Title: Android Reverse Engineering & API Extraction — Claude Code skill
• Suggested Section: Mobile Pentesting -> Android Applications Pentesting (add a subsection like "Static reversing to extract backend APIs (Retrofit/OkHttp)" or extend existing reversing-related pages such as "APK decompilers" / "Manual DeObfuscation" with multi-decompiler differential analysis + API endpoint extraction patterns)

🎯 Content Summary

Title/Type: Android Reverse Engineering & API Extraction — Claude Code skill is a Claude Code plugin/skill that automates static reverse engineering of Android artifacts (APK/XAPK/JAR/AAR) to extract and document the HTTP API surface used by an app (Retrofit/OkHttp, hardcoded URLs, auth headers/tokens) without having the app’s source code.

Primary security value (impact):🔧 Technical Details

Multi-decompiler differential analysis: Decompile the same Android artifact with different engines (jadx vs Fernflower/Vineflower) and compare outputs using decompile.sh --engine both. This helps recover clearer control flow/types when one decompiler mis-recovers constructs. Pair with --deobf to improve readability when code is obfuscated by ProGuard/R8.

Static HTTP API surface extraction from decompiled sources: After decompilation, scan recovered sources to enumerate the app’s HTTP interface by identifying (a) Retrofit interface annotations/endpoints, (b) OkHttp request builders/call sites, (c) hardcoded base URLs, and (d) auth material such as headers/tokens. Use find-api-calls.sh with focused modes like --retrofit and --urls against output/sources/ to quickly isolate these patterns.

Call-flow reconstruction for accurate request reproduction:🤖 Agent Actions

Summary: Added a new static reversing subsection covering multi-decompiler diffing, API surface extraction (Retrofit/OkHttp/URLs/auth), call-flow tracing, plus a brief tool workflow example and reference.
File updated: src/mobile-pentesting/android-app-pentesting/README.md

Tests: Not run (not requested).

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[carlospolop]

🔗 Additional Context

Original Blog Post: https://github.com/SimoneAvogadro/android-reverse-engineering-skill

Content Categories: Based on the analysis, this content was categorized under "Mobile Pentesting -> Android Applications Pentesting (add a subsection like "Static reversing to extract backend APIs (Retrofit/OkHttp)" or extend existing reversing-related pages such as "APK decompilers" / "Manual DeObfuscation" with multi-decompiler differential analysis + API endpoint extraction patterns)".

Repository Maintenance:

• MD Files Formatting: 954 files processed

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Bot Version: HackTricks News Bot v1.0