Code obfuscation is intended to thwart reverse engineering by making programmes hard to understand. Call chains collected by stack tracing can be used to understand the behaviour of programmes. To hinder reverse analysis of stack tracing, a binary code obfuscation method based on random obfuscated table and hash coding is proposed. Random obfuscated table is used to map call addresses while call and ret instructions are executing. Hash coding and random value can be used to encode and decode the data of stack frames in the run-time programmes. Experiment and analysis show that the obfuscation can effectively impede stack trace analysis and increase the cost of reverse analysis for programmes.

Code obfuscation is intended to thwart reverse engineering by making programmes hard to understand. Call chains collected by stack tracing can be used to understand the behaviour of programmes. To hinder reverse analysis of stack tracing, a binary code obfuscation method based on random obfuscated table and hash coding is proposed. Random obfuscated table is used to map call addresses while call and ret instructions are executing. Hash coding and random value can be used to encode and decode the data of stack frames in the run-time programmes. Experiment and analysis show that the obfuscation can effectively impede stack trace analysis and increase the cost of reverse analysis for programmes.