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j00ru's profile
j00ru//vx
j00ru//vx
j00ru//vx
@j00ru

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j00ru//vx

@j00ru

Windows hacker & vulnerability researcher. Google Project Zero. @DragonSectorCTF

Poland
j00ru.vexillium.org
Joined April 2010

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    j00ru//vx‏ @j00ru Jun 21

    j00ru//vx Retweeted Ben Hawkes

    In summary of the last ~1.5 years of my work, I wrote a comprehensive whitepaper on the limitations of C language, kernel infoleaks, Bochspwn Reloaded and many related topics. It's out now! Thanks to all involved. Feels good 😎https://twitter.com/benhawkes/status/1009835610931060736 …

    j00ru//vx added,

    Ben Hawkes @benhawkes
    Project Zero blog: "Detecting Kernel Memory Disclosure – Whitepaper" by @j00ru - https://googleprojectzero.blogspot.com/2018/06/detecting-kernel-memory-disclosure.html …
    9:45 AM - 21 Jun 2018
    • 564 Retweets
    • 1,202 Likes
    • Crypto Coin TWEETS Wojtek M. Yagie erthink Luis Rocha GRU Unit 26165 Travel Agent Kelby Ludwig Peter MIHALACHE DANIEL ZORIN
    15 replies 564 retweets 1,202 likes
      1. New conversation
      2. Ned Williamson‏ @NedWilliamson Jun 21
        Replying to @j00ru

        It would be amazing to run this under syzkaller if support was ported to x86!

        1 reply 0 retweets 0 likes
      3. Dmitry Vyukov‏ @dvyukov Jun 22
        Replying to @NedWilliamson @j00ru

        We just need to find at least one person out there who cares about i386 linux. I don't know maybe it works already (since we have arm). But I have hard time justifying spending any of my time on it...

        1 reply 0 retweets 0 likes
      4. Dmitry Vyukov‏ @dvyukov Jun 22
        Replying to @dvyukov @NedWilliamson @j00ru

        What I do care about is x86_64 linux + KMSAN.

        1 reply 0 retweets 0 likes
      5. Ned Williamson‏ @NedWilliamson Jun 22
        Replying to @dvyukov @j00ru

        I was about to say, I almost forgot about syzkaller + kmsan, which should be higher quality anyways since you have better instrumentation

        1 reply 0 retweets 0 likes
      6. Dmitry Vyukov‏ @dvyukov Jun 22
        Replying to @NedWilliamson @j00ru

        Also easier to maintain, detect put_user, port to arm64, etc. It's almost alive and kicking, grep for KMSAN here https://syzkaller.appspot.com/?fixed=upstream  and here https://syzkaller.appspot.com/ 

        1 reply 0 retweets 1 like
      7. Ned Williamson‏ @NedWilliamson Jun 22
        Replying to @dvyukov @j00ru

        Exciting :)

        1 reply 0 retweets 0 likes
      8. j00ru//vx‏ @j00ru Jun 22
        Replying to @NedWilliamson @dvyukov

        I agree, syzkaller + KMSAN is an awesome combo and definitely a good long-term approach for Linux. Bochspwn Reloaded is no competition to the sanitizers, as by definition source code-level instrumentation is more powerful than DBI

        1 reply 0 retweets 1 like
      9. j00ru//vx‏ @j00ru Jun 22
        Replying to @j00ru @NedWilliamson @dvyukov

        However if someone really wanted to run syzkaller + Bochspwn Reloaded, it should be possible to add support for x64 in the latter with some dev. work. There probably aren't any fundamental obstacles, as evidenced by the Windows x64 implementation ;)

        0 replies 0 retweets 1 like
      10. End of conversation
      1. A$AP NOP sled‏ @roguesys Jul 6
        Replying to @j00ru

        A$AP NOP sled Retweeted j00ru//vx

        Tried to print @j00ru’s opus and it jammed the printer in 5 different places, so I’m starting to wonder if it’s weaponized.https://twitter.com/j00ru/status/1009839823195181056 …

        A$AP NOP sled added,

        j00ru//vx @j00ru
        In summary of the last ~1.5 years of my work, I wrote a comprehensive whitepaper on the limitations of C language, kernel infoleaks, Bochspwn Reloaded and many related topics. It's out now! Thanks to all involved. Feels good 😎 https://twitter.com/benhawkes/status/1009835610931060736 …
        0 replies 0 retweets 2 likes
        Thanks. Twitter will use this to make your timeline better. Undo
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      1. Ratul Gupta‏ @r0otki7 Jun 21
        Replying to @j00ru

        You always release quality work, this seems to be an awesome read. Excellent work and research, always a fan of your work 👍

        0 replies 0 retweets 2 likes
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      1. Joseph Bialek‏ @JosephBialek Jun 21
        Replying to @j00ru

        This is definitely worth the read

        0 replies 0 retweets 1 like
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      1. Markus Burns‏ @MarkusBurns9 Jun 23
        Replying to @j00ru

        I love you

        0 replies 0 retweets 0 likes
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      1. Jatin Jhala‏ @JatinJhala Jun 23
        Replying to @j00ru

        Great stuff! Such concepts (and limitations of C) were once asked in interviews. Wonder how proprietary UNIXes/mainframes would compare!

        0 replies 0 retweets 0 likes
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      1.  ☠️ .::giblet::.  ☠️‏ @giblet004 Jun 22
        Replying to @j00ru @omespino

        Bravo... BRAVO!!! 🙏🏼👏

        0 replies 0 retweets 0 likes
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      1. Ptr32Void‏ @Ptr32Void Jun 21
        Replying to @j00ru

        It is a very nice work... I will finish going through it in the next following days. Good job.

        0 replies 0 retweets 0 likes
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      1. TinySec‏ @TinySecEx Jun 21
        Replying to @j00ru

        good project!

        0 replies 0 retweets 0 likes
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      1. Hwiwon Lee‏ @develacker Jun 21
        Replying to @j00ru

        awesome!

        0 replies 0 retweets 0 likes
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      1. Viraj Sonawane‏ @majorviraj Jun 21
        Replying to @j00ru @Fox0x01

        @ChinmayKhopde

        0 replies 0 retweets 0 likes
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      1. Hacker Fantastic‏ @hackerfantastic Jun 21
        Replying to @j00ru

        Thank you, excellent work!

        0 replies 0 retweets 0 likes
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      1. chrobertew‏ @chrobertew Jun 21
        Replying to @j00ru

        Thanks, good read even for novice like me

        0 replies 0 retweets 0 likes
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