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jonasLyk's profile
Jonas L
Jonas L
Jonas L
@jonasLyk

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Jonas L

@jonasLyk

viking @the_secret_club

Joined February 2015

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    Jonas L‏ @jonasLyk 13 Oct 2020

    CVE-2020-16938 WRITEUP- aka how I installed an UEFI bootkit from edge sandbox. So- the UEFI partition runs FAT32( No ACL or owner concepts)- so instead access is controlled virtually. Thing is though- by just requesting MAX for permissions everything is bypassed and you get writepic.twitter.com/qcCZKFU6pg

    12:38 PM - 13 Oct 2020
    • 158 Retweets
    • 472 Likes
    • 👨‍🎓 unknowntrojan IDontCode V  MAKE BEZOS DRINK THE PEE BOTTLES [xieve] goobster 16bitm0de Harsh Varagiya
    8 replies 158 retweets 472 likes
      1. Nathan McNulty‏ @NathanMcNulty 13 Oct 2020
        Replying to @jonasLyk

        Nice find Jonas!

        0 replies 0 retweets 1 like
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      1. Wolf Ltd‏ @WolfLtd1 13 Oct 2020
        Replying to @jonasLyk

        Well done

        0 replies 0 retweets 1 like
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      1. Testman‏ @_notation 13 Oct 2020
        Replying to @jonasLyk

        Lol nice filename 🤣 she's 💯 proud I'm sure of it. 😎

        0 replies 0 retweets 5 likes
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      1. Justin‏ @HackingLZ 13 Oct 2020
        Replying to @jonasLyk

        https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16938 … "Exploitation Less Likely" 🧐

        0 replies 0 retweets 5 likes
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      5. New conversation
      1. Abdelhamid Naceri‏ @KLINIX5 13 Oct 2020
        Replying to @jonasLyk

        Btw how it can be a "boot"kit ?

        1 reply 0 retweets 2 likes
      2. Jonas L‏ @jonasLyk 13 Oct 2020
        Replying to @KLINIX5

        its not- its a deliveri method for uefi bootkit, directly from sandbox

        1 reply 0 retweets 4 likes
        3. End of conversation
      6. New conversation
      1. Michael B.‏ @DownWithUpSec 13 Oct 2020
        Replying to @jonasLyk

        I can't believe no one thought to open this with MAXIMUM_ALLOWED. This is amazing! 😅

        1 reply 1 retweet 3 likes
      2. Jonas L‏ @jonasLyk 13 Oct 2020
        Replying to @DownWithUpSec

        I asked MS about exactly that- "Well- nobody do what you do with files"

        2 replies 2 retweets 16 likes
      3. Show replies
      1. Tom‏ @tommaw3 14 Oct 2020
        Replying to @jonasLyk

        Brilliant sir

        0 replies 0 retweets 1 like
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      1. MikeFoxtrot‏ @mf_se 15 Oct 2020
        Replying to @jonasLyk

        Well Done !

        0 replies 0 retweets 0 likes
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