Code fragmentization based Android application program packing protection method and apparatus

Abstract

The invention discloses a code fragmentization based Android application program packing protection method and apparatus. The method comprises: extracting an executable file, a shared library file, resources, configuration information and the like from a to-be-protected application program first, then performing code fragmentization on the executable file, encrypting code fragments, importing the encrypted code fragments into a newly created application package, and adding the extracted configuration information; and decrypting the encrypted code fragments, allocating independent memory space, repairing and recombining the decrypted code fragments into the executable file, preparing a runtime environment and reconstructing an installation package. The method is high in protection intensity; and the executable file of the protected application program always exists in a fragmentization form in a process memory in the whole life cycle, so that the possibility of stealing the complete executable file by an attacker is greatly reduced and the difficulty of reversing, cracking, secondary packing and the like of the application program is greatly increased; and the protection intensity and the performance overhead can be balanced.

Description

technical field [0001] The invention belongs to the field of computer software security, and in particular relates to a code fragmentation-based Android application program packing protection method. Background technique [0002] In recent years, with the popularity and popularity of Android smart devices, various Android applications have appeared on the market to meet the needs of users. However, due to the openness of the platform itself, the low threshold of the application market, and the structural characteristics of the application itself, the security problems faced by Android applications are increasing day by day, and problems such as application cracking, reverse engineering, piracy, and secondary packaging are not uncommon. , where the problem of secondary packaging is particularly serious. Studies have shown that most malicious applications are generated by repackaging legitimate applications. [0003] In order to solve these problems faced by Android applicat...

AI Technical Summary

Problems solved by technology

However, like the packing system on the early x86 platform, the current Android packing system also packs the executable file of the application in a complete form, resulting in the threat of being easily stolen from the memory. Once the complete executable is stolen, the attacker can proceed with any attack he wishes

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