android-re-decompile

What problem does it solve?

This skill solves the challenge of analyzing compiled Android applications by providing automated decompilation, API endpoint extraction, and call flow tracing. Without these capabilities, reverse engineering Android apps requires manual tool orchestration and deep expertise in multiple decompilers and analysis techniques.

Core Features & Use Cases

• Multi-Engine Decompilation: Supports jadx, Fernflower, and Vineflower with automatic engine selection and comparison mode for optimal output quality.
• Intelligent Triage: The fingerprinting phase detects the mobile framework (Flutter, React Native, Native) and HTTP stack before decompiling, preventing wasted effort on non-Java codebases.
• API Discovery: Automatically extracts HTTP endpoints from Retrofit, OkHttp, Ktor, Volley, and Apollo interfaces, producing structured documentation with authentication patterns and request signing schemes.
• Obfuscation Recovery: Recovers original Kotlin class names from R8-obfuscated apps using metadata mining, and provides deobfuscation support for both jadx and Fernflower.
• Call Flow Mapping: Traces execution paths from UI entry points through DI frameworks (Hilt, Koin) down to network calls, producing readable architecture summaries.

Quick Start

Use the android-re-decompile skill to analyze the attached Android application file and produce a structured report of all discovered API endpoints and the call flows that lead to them.