Hello,
This i need it for one app which is written in c#.
I know that it's possible and which guy can do it, he says it's easy but I should learn before reverse engineering. Does no one can do this here?

First i want to get the source code of one app and give it another which can better coding. Second i want myself to change somethings, I can't code but what I want is just to place boxes on other places and change the color cuz some buttons I just don't see cuz i have dark mode enabled
The