how to against apk-tool&modify apktool,protect my app?

Question

Please consider the following link:

https://code.google.com/p/android-apktool/wiki/KnownIssues

Towards the bottom it's stated：

I've found that some APKs don't conform to regular Android standards. They were probably built using a modified aapt, which makes decompiling near impossible. These APKs are called "Magic" apks and probably won't be supported.

So, how do I can protect my app? I'm interested in modified aapt , but I have no idea where to begin? Thank you.

Answer 1

This is generally a lost cause. There are tools that abuse the DEX file format to try to hide your code from popular tools, but they can be easily defeated. 'Near impossible' is a not quite true, just harder to make a general purpose tool for it.

Obfuscate your code, consider using Dex2Jar and above all build a great app so that more people will use it/pay for it.

Answer 2

You must first search about it, There is some useful link about reverse engineering and decompile .apk files :

• How to avoid reverse engineering of an APK file?
• decompiling DEX into Java sourcecode