Usar la aplicación APKPure
Obtener Advanced APK Editor Pro versión histórica en Android
Súper herramienta que verifica en profundidad los archivos APK.
It helps you do things like strings localization, background image replacement, permission removal etc. Also you can check into Android manifest files, compiling classes.dex files. What it can do depends on how you use it. It requires professional skills for maximum performance.