Study on android native layer code protection based on improved o-llvm

Abstract

Studies on Android application code protection contain two types, on Java layer and on native layer. Java Layer code has been well studied and the common practice is using a packer. While there are relatively few studies on native layer. Based on an improved O-LLVM with new passes, we designed an on-compile code obfuscating solution for Android native layer, which can significantly increase the costs of reverse engineering with an acceptable side effect on performance.