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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. q3k‏ @q3k 22 Apr 2018
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      Okay, fuck hoarding security research data. Here's ours (@G33KatWork and yours truly) .IDC for the Tegra X1 BootROM. Have fun! https://q3k.org/u/6eac2986691922d02e9b25f3b767fd7ea9c44ca18bf7b792884e5c665df5152a.idc …

      4 replies 39 retweets 113 likes
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    2. q3k‏ @q3k 22 Apr 2018
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      This should save you a lot of time on the boring find-the-register-in-the-TRM work, and also let you understand the gist of the code much easier. No obvious 0dayz, though :).

      2 replies 2 retweets 21 likes
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    3. Bernhard Froemel‏ @bernfroe 23 Apr 2018
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      Replying to @q3k

      No obvious 0dayz <-- sure, as if you discovered any :)

      1 reply 0 retweets 0 likes
    4. q3k‏ @q3k 23 Apr 2018
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      Replying to @bernfroe

      That was my point, I haven't.

      1 reply 0 retweets 0 likes
    5. Bernhard Froemel‏ @bernfroe 23 Apr 2018
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      Replying to @q3k

      That wasn't clear to me right away. Well, don't worry, me neither (+ glad that someone else thinks that this coldboot bug is not obvious as well ;) ).

      1 reply 0 retweets 1 like
    6. q3k‏ @q3k 23 Apr 2018
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      Replying to @bernfroe

      Well, now that the bug is out (see parallel branch in this thread), it's obvious in hindsight. We even looked quickly at wLength in USB control, but apparently not well enough! Good CTF, 8/10, would play again.

      1 reply 0 retweets 1 like
    7. Bernhard Froemel‏ @bernfroe 23 Apr 2018
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      Replying to @q3k

      yeah :) heh, to me this was 9/10 (never glitched before) still missing the bits how this can be used in a stand-alone way. Either there are more bugs or it never was completely coldboot/ untethered.. ah we'll see soon enough.

      2 replies 0 retweets 0 likes
      Hector Martin‏ @marcan42 23 Apr 2018
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      Replying to @bernfroe @q3k

      Nobody ever claimed an untethered Boot ROM bug. Coldboot just means on initial power on, not requiring later firmware exploits and/or warmboot resets.

      11:03 PM - 23 Apr 2018
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      • Bernhard Froemel q3k
      0 replies 0 retweets 2 likes

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