Introduction: The Black-Box Challenge in Android RE

Android reverse engineering often presents itself as a black-box challenge, particularly when dealing with proprietary applications, malware, or highly obfuscated codebases. Static analysis, while foundational, frequently hits limitations: dynamically loaded classes, encrypted strings, reflection-heavy code, and anti-analysis techniques can obscure critical logic. This is where dynamic analysis frameworks like Xposed become indispensable, offering a vantage point directly within the Android Runtime (ART) to observe and manipulate an application’s behavior as it executes.

This article delves into developing Xposed modules to perform runtime class and method enumeration. This technique allows reverse engineers to discover classes and methods that are only initialized or made visible during execution, bypassing many static analysis roadblocks and providing a clearer map of an application’s active components.

Understanding Xposed: A Runtime Hooking Framework

Xposed is a framework that allows users to apply