Packed, printable, and polymorphic return-oriented programming

  • Authors:
  • Kangjie Lu;Dabi Zou;Weiping Wen;Debin Gao

  • Affiliations:
  • School of Information Systems, Singapore Management University, Singapore;School of Information Systems, Singapore Management University, Singapore;School of Software and Microelectronics, Peking University, China;School of Information Systems, Singapore Management University, Singapore

  • Venue:
  • RAID'11 Proceedings of the 14th international conference on Recent Advances in Intrusion Detection
  • Year:
  • 2011

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Abstract

Return-oriented programming (ROP) is an attack that has been shown to be able to circumvent W⊕X protection. However, it was not clear if ROP can be made as powerful as non-ROP malicious code in other aspects, e.g., be packed to make static analysis difficult, be printable to evade non-ASCII filtering, be polymorphic to evade signature-based detection, etc. Research in these potential advances in ROP is important in designing counter-measures. In this paper, we show that ROP code could be packed, printable, and polymorphic. We demonstrate this by proposing a packer that produces printable and polymorphic ROP code. It works on virtually any unpacked ROP code and produces packed code that is self-contained. We implement our packer and demonstrate that it works on both Windows XP and Windows 7 platforms.