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美国韦恩州立大学(Wayne State University, USA)Fengwei Zhang博士学术报告通知
撰稿人:彭滔     发布时间:2018年06月05日 20:30
题目: DexLego: Reassembleable Bytecode Extraction for Aiding Static Analysis
时间: 2018年06月14日(星期四)上午10:00-12:00
地点: 广州大学行政西楼前座428(学院会议室)
报告人: Fengwei Zhang博士,美国韦恩州立大学(Wayne State University, USA)

The scale of Android applications in the market is growing rapidly. To efficiently detect the malicious behavior in these applications, an array of static analysis tools are proposed. However, static analysis tools suffer from code hiding techniques like packing, dynamic loading, self modifying, and reflection. In this talk, I thus present DEXLEGO, a novel system that performs a reassembleable bytecode extraction for aiding static analysis tools to reveal the malicious behavior of Android applications. DexLego leverages just-in-time collection to extract data and bytecode from an application at runtime, and reassembles them to a new Dalvik Executable (DEX) file offline. The experiments on DroidBench and real-world applications show that DexLego correctly reconstructs the behavior of an application in the reassembled DEX file, and significantly improves analysis result of the existing static analysis systems.

Fengwei Zhang is an Assistant Professor and Director of the COMputer And Systems Security (COMPASS) lab at Wayne State University. He received his Ph.D. degree in computer science from George Mason University in 2015. His research interests are in the areas of systems security, with a focus on trustworthy execution, transparent malware debugging, transportation security, and plausible deniability encryption. He has been published at top security venues including IEEE S&P, USENIX Security, NDSS, IEEE TIFS, and IEEE TDSC. He is a recipient of the Distinguished Paper Award in ACSAC 2017.