Is it possible to get the token generation function from the APK?

Question

Android

The application sends requests to its api (authorization) uses a token. Part of the token has been experimentally solved, part remains a mystery. With the help of apktool, there was an attempt to disassemble apk, but was not successfully married. What are the application analysis tools, is it possible to listen somehow to triggered functions while the application is running?

Answer 1

This is the whole point of reverse engineering.
Only with pens to understand the obfuscated code, analyze functions and memory dumps ...

Answer 2

You can get anything. A question of price.