a set of tools/scripts to obfuscate and manipulate dex files
This toolset has been used to create an Android Proof-of-Concept crackme. It has also been used to create test APK files in order to evaluate this obfuscation technique against common reverse engineering tools for Android.
Further information about this obfuscation technique can be found under: http://www.dexlabs.org/blog/bytecode-obfuscation
WARNING: Don't apply this technique to your applications. It can break your app. It is for research only!