Code virtualization software protection system realizing instruction set randomization

Abstract

The invention discloses a code virtualization software protection system realizing instruction set randomization, and belongs to the field of computer software security. According to the code virtualization software protection system, a virtual instruction set is built in the system; key code in a program to be protected is disassembled to obtain a local instruction sequence; then, the local instruction sequence is converted into a first virtual instruction according to the virtual instruction set of architecture; the first virtual instruction is coded to obtain a byte code instruction; the byte code instruction is combined with a generated attached virtual machine assembly to obtain an attached file; the attached file is combined with the program to be protected to obtain a first file; and junk data filling is performed on the first file to obtain the final protected program. The code virtualization software protection system has the advantages that the complexity of the program to be protected can be improved; and the analysis time of an analyzer on the program to be protected is prolonged, so that the protection capability of the program to be protected is enhanced.

Description

technical field [0001] The invention belongs to the field of computer software security, in particular to a code virtualization software protection system with randomized instruction set. Background technique [0002] While the wide application of software has brought huge benefits to the society, the issue of software security has become increasingly prominent, and software anti-malicious reverse engineering has become an urgent problem to be solved. The development of current software attack technology and reverse tools facilitates the reverse analysis of software by attackers. In addition, software generally runs in a "white box attack" environment, where attackers can completely control the execution process of the software and view the sequence of instruction execution. Therefore, given the attacker enough time, it should be possible to successfully reverse engineer the software. [0003] The amount of information a person can process within a certain period of time i...

AI Technical Summary

Problems solved by technology

The principle of code obfuscation is to convert a program into an equivalent program that is functionally equivalent but has a different static representation or execution process. It mainly changes the control flow of the program through instruction replacement and sequence rearrangement, but these simple instruction compression transformations is easy to understand

And the obfuscation technology currently applied to binary code is mainly protected by waste instructions or garbage instructions, which has poor protection effect and is easy to be found and removed

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