Android Reverse Engineering Cheatsheet
Android is the most famous platform in the world so security is really import for Android devices, Google provides a lot of resources for Android Security but developers still make mistakes, here is the list of tools and commands to extract juicy information from Android Applications.
Static analysis is really important, there are many tools out there for the job but I like StaCoAn. It is really awesome
ADB is really powerfull and can be very usefull when reverse engineering APK. Here is the list of commands that can be usefull in extracting data from APKs
adb logcat # Too verbose always filter data with grep
string apk_file # Too verbose try filtering with grep