Patching Android ARM64 library initializers for easy Frida instrumentation and debugging

This post outlines a technique for converting an Android .so library with an .init_array into a standalone, instrumentable binary: it removes INIT_ARRAY/INIT_ARRAYSZ from the dynamic section using LIEF, adds a symbol for the constructor (INIT0), and renames JNI_OnLoad to avoid automatic invocation. A JNIInvocation-based harness then initializes ART/JNI to load and interact with the library outside an app, and Frida hooks are used to manipulate exported functions to solve a simple crackme—illustrating practical methods for bypassing RASP and improving mobile reverse engineering workflows.