Codegate CTF 2018 Preliminary : Welcome to droid

How to solve

> apktool d droid.apk

Edit AndroidManifest.xml to change the entry point to Main4Activity.

> apktool b .\droid\
> jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore [REDACTED]\mykey.keystore droid.apk ctf
> "[REDACTED]\zipalign.exe" -v 4 droid.apk droid2.apk

Run droid2.apk on Android emulator.

Flag

FLAG{W3_w3r3_Back_70_$3v3n7een!!!}