Android application software reinforcement protection method based on DexClassloader

Abstract

The invention aims to provide a method for realizing Dex memory loading on the basis of a DexClassLoader. An apk (AndroidPackage)) reinforcement operation is carried out on a PC (Personal Computer); a reinforced application is installed, shelled, loaded and started on an Android terminal; and a reinforced dex structure is completely different from the structure of a traditional dex file and can not be successfully decompiled into a source file with readability. A reinforcement scheme successfully protects the confidentiality of key data so as to perform an anti-decompilation effect, a ZjDroil shelling tool is used for carrying out a shelling operation on the reinforced apk, and the source files and the dex fragments of any source apk can not be obtained. A memory loading process provided by the invention performs a good effect on preventing Java layer Hook, and meanwhile, a phenomenon that a dex plaintext appears on a disk and is robbed by an attacker is avoided. Compared with a traditional disk loading way, the method disclosed by the invention is characterized in that safety is greatly improved.

Description

technical field [0001] The invention belongs to the field of information security and relates to a mobile application software security protection technology, in particular to an improved and optimized application software reinforcement protection method based on a Dex loader under an Android platform. Background technique [0002] Android applications are compiled from the Java language, and the binary code compiled by the Java language can be easily decompiled. The security of the code is greatly threatened, and it also provides an opportunity for piracy. The attacker downloads a legitimate application, modifies the configuration file by decompiling, or even implants malicious code, then repackages the application with a packaging tool, and finally re-signs the application with his own key and publishes it to the application market. For ordinary mobile phone users, it is difficult to identify such repackaged applications, and pirated or malicious applications can easily be...

AI Technical Summary

Problems solved by technology

So far, Android application hardening has accumulated a certain amount of technology, but as the Android system version has been iteratively updated, the existing Android hardening technology is also facing some challenges: the startup speed of the hardened application needs to be optimized; the hardening process is inefficient Need to be improved; the security of the hardening program itself has not been paid attention to, etc.

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