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Re: Nitin Kumar & Vipin Kumar: "please remember to givenecessary credit to : msg#00066security.dailydave
On 26 April 2007 22:23, Dave Korn wrote: > I will concede that they've done at least some genuine work in reversing > the integrity checks in the loader, but that's fairly routine stuff; > bypassing a check by altering the test in a branch instruction is pretty > trivial, it's about on the level of finding an infinite lives poke in a > computer game. Now I see this coming back at me on the list, it occurs to me to mention a *far* more relevant comparison: it's exactly what Hoglund showed in his earliest work about hot-patching a one-byte bypass into SeAccessCheck. That was back in NT3.51 days, 1995 or so IIRC. cheers, DaveK -- Can't think of a witty .sigline today.... |
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