Apktool is an Android APK reverse engineering tool designed to decode application packages into human-readable form and rebuild them after modification. It functions as a Dalvik bytecode disassembler and a resource decoder, transforming binary Android XML and DEX files into editable text and Smali representation.
The project serves as an application rebuilder, packing modified resources and Smali code back into a functional Android application package. This capability enables the modification of application logic and resources for testing and deployment.
The tool covers a broad surface of analysis and modification, including Android app modding, malware analysis, and Smali bytecode debugging to identify vulnerabilities or examine internal software structures.