C++反编译中控制流图优化方法研究

Study of the optimization of control flow in C++ decompiler

控制流分块是反编译系统中基本的功能之一。介绍了控制流分块方法,分析了C++语言与C语言的区别,指出了现有的控制流分块方法用于C++逆向的局限性,提出了改进C++逆向中流程分块的方法,给出了基于模块特征识别的算法,在部分开源架构中进行实验并取得了较好的效果。

The control flow blocking is one of the basic function of a decompiler system. This paper introduces the methods of the control flow blocking, analyzes the difference between C and C ＋＋ language, points out the limitations of the existing control flow blocking methods for C＋＋ language. The improving method of control flow blocking for the C＋＋ is introduced. An algorithm basd on fuature-recognition is given and it achieved good effects in the experiments on some open-source frameworks.