APK files are really nothing more than zip files. If you just want to replace the images, then the easiest way is to open the apk file in 7-zip or winrar and replace the png files with their own. Just drag and drop the new files into the 7-zip window.
, "", "". .
- APKManager. , /system/app:
- APK Manager
- .apk "place-apk-here-for-modding"
- script.bat .
- PNG /res/drawable -? dpi, .
- ZIP.apk 2 Regular APK
- APK