Fachbereich Informatik

Tom Reps

(University of Wisconsin and GrammaTech, Inc.)

"WYSINWYX: What You See Is Not What You eXecute"

(Vortrag im Rahmen der "Distinguished Lecture Series Spring 2008" des Max Planck Instituts für Software-Systeme)

What You See Is Not What You eXecute: computers do not execute source-code programs; they execute machine-code programs that are generated from source code. Not only can the WYSINWYX phenomenon create a mismatch between what a programmer intends and what is actually executed by the processor, it can cause analyses that are performed on source code -- the approach followed by most program-analysis tools -- to fail to detect bugs and security vulnerabilities. To address the WYSINWYX problem, we have developed algorithms to recover information from stripped executables about the memory-access operations that the program performs. These algorithms are used in the CodeSurfer/x86 tool to construct intermediate representations that are used for browsing, inspecting, and analyzing stripped x86 executables. Joint work with G. Balakrishnan (NEC), J. Lim (UW), and T. Teitelbaum (Cornell and GrammaTech, Inc.).



Zeit: Montag, 05. Mai 2008, 11:00 Uhr
Ort: Saarbrücken, Gebäude MPI-SWS, Raum 019
Hinweis: Der Vortrag wird live an die TU Kaiserslautern Gebäude 32 Raum 349 übertragen.