Obfuscapk is a modular Python tool designed for obfuscating Android applications without requiring access to their source code. The tool operates by using apktool to decompile the original APK file into its constituent components. The obfuscation process targets multiple aspects of the Android application: - Decompiled smali code manipulation - Resource file modification - Android manifest alterations The tool applies various obfuscation techniques to transform the application's internal structure while preserving its original functionality. This process creates applications that maintain identical behavior to their original versions but possess significantly different underlying implementations. Obfuscapk supports both traditional Android Package (APK) files and Android App Bundles (AAB files) through integration with BundleDecompiler. The modular architecture allows for flexible application of different obfuscation methods depending on specific requirements. The resulting obfuscated applications retain full operational capability while presenting altered code structures that differ substantially from the original implementation.