reversing

Flagdroid Description This app won’t let me in without a secret message. Can you do me a favor and find out what it is? Write-Up For this challenge we get an APK file. Fortunately APK files are fairly well reversible (as is most Java based bytecode). In this case we just used an online service to “decompile” the APK for us, but there are plenty of tools you can use to do this locally if you want.