Android

Retrieve APK

Download the APK from the smartphone

Verify if device is connected

adb devices

View list of installed packages

adb shell pm list packages

Get path of apk

adb shell pm path com.example.example

Get apk

adb pull /data/app/com.example.example.path.ecc.ecc

Website with APKs

Might be available here: https://apkpure.com https://apkmonk.com https://apkfollow.com

External refs: https://manifestsecurity.com/android-application-security/