[Abishek_Muthian]

I was into reverse engineering android apps in the same period, My toolchain at that time was -

Java Decompilation:

Method 1: Dare + JD Decompiler +Cavaj (or) DJ Decompiler

Method 2: dex2jar + JD Decompiler + Cavaj (or) DJ Decompiler

Method 3 : AndroChef Java Decompiler

Accessing Apk Resource Files:

Apk Tool.

Selecting Decompilation of System Files:

Smali, Backsmali

Later a tool called Procyon replaced many of the aforementioned tools.

P.S. Not including links for any of those tools as apart from being obviously outdated, Many of those tools started flagging for malware in later days; Perhaps they're just false positive considering their feature set but I don't want to risk it.

[mmastrac]

dex2jar + JD Decompiler was my go-to as well, but I spent a long time staring at Smali directly.