How to sign an app with two signatures or a full v2 signature?

Question

Android

Hello!

Faced with the fact that after decompiling the application, you need to sign it with two signatures, I didn’t see it before and didn’t know it.

I always signed jarsigner, and that was enough, one signature, but then I ran into the fact that two signatures were needed.

I look in JADX, and it shows that the application initially has two signatures v1 and v2, so the question is how to sign the compiled application with two signatures?


After compiling and signing the application, the application does not work. Even if you just decompile and recompile there is nothing without changing. I noticed the difference in signatures, maybe this is the problem, jarsigner makes one signature, and the application has two at once. Who fumbles in this thread, tell me how to compile, sign to make it work?!!!

PS
The APK easy tool was able to make two signatures, but the app still won't start.

Thank you!

Answer 1

Solution: Use google hacking tools! And signature verification goes much further)))