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dguido's profile
Dan Guido
Dan Guido
Dan Guido
@dguido

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Dan Guido

@dguido

CEO @trailofbits, organizer @EmpireHacking, director @hack_secure. Open DMs.

Brooklyn, NY
trailofbits.com
Joined April 2008

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    1. John Regehr‏ @johnregehr 9 Oct 2019
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      are there any llvm-mctoll users out there? I just ran it on this super-simple function and it dies when it hits the shift instruction, anyone know if I'm messing something up or it's just very limited?pic.twitter.com/VFk5Tm0onh

      3 replies 1 retweet 3 likes
    2. Kevin Tavukciyan‏ @0xDouze 9 Oct 2019
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      Replying to @johnregehr

      I'm not a heavy user but I've also had it die at very basic things like loops so they might have a few problems

      1 reply 0 retweets 1 like
    3. John Regehr‏ @johnregehr 9 Oct 2019
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      Replying to @0xDouze

      ugh thanks.

      1 reply 0 retweets 1 like
    4. Dan Guido‏ @dguido 9 Oct 2019
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      Replying to @johnregehr @0xDouze

      There's a summary of available LLVM lifters on the mcsema readme, if you want to consider a different tool:https://github.com/trailofbits/mcsema#comparison-with-other-machine-code-to-llvm-bitcode-lifters …

      1 reply 0 retweets 3 likes
    5. John Regehr‏ @johnregehr 9 Oct 2019
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      Replying to @dguido @0xDouze

      I do want to consider different tools! but I have a pretty non-standard use case where the lifted IR is going to be fed to a formal methods tool, and I'm afraid that a lot of extraneous memory references are going to just kill that tool

      2 replies 0 retweets 0 likes
    6. John Regehr‏ @johnregehr 9 Oct 2019
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      Replying to @johnregehr @dguido @0xDouze

      have not tried out mcsema yet, but so far just going off what I read here: https://adalogics.com/blog/binary-to-llvm-comparison …

      1 reply 0 retweets 0 likes
      Dan Guido‏ @dguido 9 Oct 2019
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      Replying to @johnregehr @0xDouze

      IMHO that's a really ill-informed review of binary lifters. Here's what we had to say about their methodology.https://www.reddit.com/r/ReverseEngineering/comments/d5w15d/comparison_of_the_llvm_ir_generated_by_three/f0pphgs/ …

      10:51 AM - 9 Oct 2019
      • 1 Retweet
      • 4 Likes
      • Matteo SektorROM Aziem Chawdhary John Regehr
      1 reply 1 retweet 4 likes
        1. John Regehr‏ @johnregehr 9 Oct 2019
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          Replying to @dguido @0xDouze

          got it. thanks! I had not seen this reply.

          0 replies 0 retweets 0 likes
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