I was wondering how cracked apks get generated. Simple things, as I understand, like removing ads can be done with lucky patcher but if I wanna crack an app which needs me to login and is working on a subscription basis, I have to recode it?

Or am I able do do it with lucky patcher myself when my phone is rooted?

[s15785n]

Well, start with APK Editor, APK tool /X, then move on to baksmali. Check out jasi reversing tool. Many useful tools in one.

For unity, usually .net disassemble.
For the pro, ida disassembler is prime. Hope I helped, Google has allot of info!