Packet decoding using context sensitive parsing

  • Authors:
  • Sylvain Marquis;Thomas R Dean;Scott Knight

  • Affiliations:
  • Royal Military College of Canada, Kingston, Canada;Queen's University, Kingston, Canada;Royal Military College of Canada, Kingston, Canada

  • Venue:
  • CASCON '06 Proceedings of the 2006 conference of the Center for Advanced Studies on Collaborative research
  • Year:
  • 2006

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Abstract

Protocol tester is a project at RMC and Queen's that applies program transformation techniques to protocol data to evaluate the security of network applications. As part of this process, binary protocols are translated into a textual representation. This paper describes a translation process using a context sensitive parser that eliminates the need to write custom code to decode each individual protocol. It is a template driven top down parser augmented by a constraint engine. The constraint engine is used to implement the context sensitive restrictions.