A tool for reverse engineering 3rd party, closed, binary Android apps. It can decode resources to nearly original form and rebuild them after making some modifications. It also makes working with an app easier because of the project like file structure and automation of some repetitive tasks like building apk, etc.
Tools to work with android .dex and java .class files.
JD-GUI is a standalone graphical utility that displays Java source codes of “.class” files. You can browse the reconstructed source code with the JD-GUI for instant access to methods and fields.
Comprehensive security and attack framework for Android.
This extension depended upon the interface to sqlite engine embedded in Firefox.
Virtuous Ten Studio (VTS) is the ultimate solution for the modification of android applications. This program allows you to manage entire Android projects within an easy to use and familiar environment.
JEB is a reverse-engineering platform to perform disassembly, decompilation, debugging, and analysis of code and document files, manually or as part of an analysis pipeline.
Commercial
Mobile Security Framework (MobSF) is an intelligent, all-in-one open source mobile application (Android/iOS/Windows) automated pen-testing framework capable of performing static and dynamic analysis.
AppUse is a VM (Virtual Machine) developed by AppSec Labs. It is a unique platform for mobile application security testing, Android and iOS applications and includes exclusive custom-made tools and scripts created by AppSec Labs.
Commercial and free
Appie is a software package that has been pre-configured to function as an Android Pentesting Environment on any windows based machine without the need of a Virtual Machine(VM) or dualboot. It is completely portable and can be carried on USB stick or your smartphone. It is one of its kind Android Security Analysis Tool and is a one stop answer for all the tools needed in Android Application Security Assessment, Android Forensics, Android Malware Analysis.
Santoku is dedicated to mobile forensics, analysis, and security, and packaged in an easy to use, Open Source platform.