By using Dexguard - the paid version of Proguard.

However, as we’ll prove in this article, it’s very easy to understand and to find useful information.

By using Proguard or R8- the most popular method.

Are there different ways to obfuscate your code?.

And, of course, release build is signed with a developer release certificate. Sometimes some classes can also be moved into different packages and split into different parts. It is also obfuscated and optimised with all unreachable code removed and the majority of the code fields replaced with some unreadable names - like a, b, a1, b1 and so on. The difference is that the release build doesn’t have features which you need for debugging - like logs or Developer options.

How is the release build created and how does it differ from the debug build?.

Usually anyone who calls himself an Android developer should disable logging before releasing the application.

Why can’t I read logs right from the start?Īctually you can! But there aren’t so many apps like that.

If you’re not really a hacker and don’t want to decompile different apps for any educational reason whatsoever, I would still recommend that you read this article as it will highlight a lot of interesting things about your app as well! In order to enable logging we need to decompile the APK, then replace the specific code which is responsible for turning off logs and compile it back. The same approach can be used for other logging libraries with minor changes. Note : we’ll be looking at logging with Timber library. In this article we’ll discuss how we can enable logging on any kind of obfuscated release APK.

Today we’ll look at how to eavesdrop and spy on your competitors, enemies, ex-colleagues or anyone else in order to obtain their trade secrets, classified algorithms, funny puns and do a lot of other crazy things. Welcome to a series of Spy security articles where we’ll learn how to hack an APK and modify it for educational purposes. Everything that I have described here you do at your own risk. Do not attempt to reverse engineer and inject code into apps to which you don’t have the rights. Disclaimer: This article was written solely for entertainment and educational purposes.

Print to log android studio