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Title: Lambda Obfuscation
With the rise of increasingly advanced reverse engineering technique, especially more scalable symbolic execution tools, software obfuscation faces great challenges. Branch conditions contain important control flow logic of a program. Adversaries can use powerful program analysis tools to collect sensitive program properties and recover a pro- gram’s internal logic, stealing intellectual properties from the original owner. In this paper, we propose a novel control obfuscation technique that uses lambda calculus to hide the original computation semantics and makes the original program more obscure to understand and re- verse engineer. Our obfuscator replaces the conditional instructions with lambda calculus function calls that simulate the same behavior with a more complicated execution model. Our experiment result shows that our obfuscation method can protect sensitive branch conditions from state- of-the-art symbolic execution techniques, with only modest overhead.  more » « less
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Proceedings of the 13th EAI International Conference on Security and Privacy in Communication Networks (SecureComm 2017)
Medium: X
Sponsoring Org:
National Science Foundation
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