Download the target APK file

here

and use

to extract the contents of the APK file to a folder. With some hit and trial mixed with experience and intuition I got down to the shared lib

this is the armeabi-v7a, there is also the x86 version which is not covered. To start, fire up IDA the world’s best Disassembler, Click File -> Open select

in \lib\armeabi-v7a\. In the load new file dialog box select ELF for ARM if not auto selected keep all other settings as it is and click OK Button. Decompilication will start and will open up in a few seconds, in the Functions Window scroll down to find the