RopSteg: Program Steganography with Return Oriented Programming
Many software obfuscation techniques have been proposed to hide program instructions or logic and to make reverse engineering hard. In this paper, we introduce a new property in software obfuscation, namely program steganography, where certain instructions are "diffused" in others in such...
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| Main Authors: | , , |
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| Format: | text |
| Language: | English |
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Institutional Knowledge at Singapore Management University
2014
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| Online Access: | https://ink.library.smu.edu.sg/sis_research_smu/50 https://ink.library.smu.edu.sg/cgi/viewcontent.cgi?article=1049&context=sis_research_smu |
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| Institution: | Singapore Management University |
| Language: | English |
| Summary: | Many software obfuscation techniques have been proposed to hide program instructions or logic and to make reverse engineering hard. In this paper, we introduce a new property in software obfuscation, namely program steganography, where certain instructions are "diffused" in others in such a way that they are non-existent until program execution. Program steganography does not raise suspicion in program analysis, and conforms to the W⊕X and mandatory code signing security mechanisms. We further implement RopSteg, a novel software obfuscation system, to provide (to a certain degree) program steganography using return-oriented programming. We apply RopSteg to eight Windows executables and evaluate the program steganography property in the corresponding obfuscated programs. Results show that RopSteg achieves program steganography with a small overhead in program size and execution time. RopSteg is the first attempt of driving return-oriented programming from the "dark side", i.e., using return-oriented programming in a non-attack application. We further discuss limitations of RopSteg in achieving program steganography. |
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