swMATH ID: 31767
Software Authors: Ming, J., Xu, D., Jiang, Y., Wu, D.
Description: BinSim: trace-based semantic binary diffing via system call sliced segment equivalence checking. Detecting differences between two binary executables (binary diffing), first derived from patch analysis, have been widely employed in various software security analysis tasks, such as software plagiarism detection and malware lineage inference. Especially when analyzing malware variants, pervasive code obfuscation techniques have driven recent work towards determining semantic similarity in spite of ostensible difference in syntax. Existing ways rely on either comparing runtime behaviors or modeling code snippet semantics with symbolic execution. However, neither approach delivers the expected precision. In this paper, we propose system call sliced segment equivalence checking, a hybrid method to identify fine-grained semantic similarities or differences between two execution traces. We perform enhanced dynamic slicing and symbolic execution to compare the logic of instructions that impact on the observable behaviors. Our approach improves existing semantics-based binary diffing by 1) inferring whether two executable binaries’ behaviors are conditionally equivalent; 2) detecting the similarities or differences, whose effects spread across multiple basic blocks. We have developed a prototype, called BinSim, and performed empirical evaluations against sophisticated obfuscation combinations and more than 1;000 recent malware samples, including now-infamous crypto ransomware. Our experimental results show that BinSim can successfully identify fine-grained relations between obfuscated binaries, and outperform existing binary diffing tools in terms of better resilience and accuracy.
Homepage: https://dl.acm.org/doi/10.5555/3241189.3241211
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