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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. Dan Guido‏ @dguido May 18
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      Dan Guido Retweeted Joseph Cox

      Does anyone have the specs for this "Al Qaeda" phone handy? What model iPhone and what iOS version?https://twitter.com/josephfcox/status/1262385487299383299 …

      Dan Guido added,

      Joseph Cox @josephfcox
      The FBI says it has discovered an Al Qaeda link after breaking into the iPhone used in the Pensacola attack. This is a phone the FBI said they could not get into Our examination of over 500 iPhone warrants showed its not as simple as 'buy a GrayKey' https://www.vice.com/en_us/article/4ag5yj/unlock-apple-iphone-database-for-police …
      1 reply 3 retweets 9 likes
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    2. Dan Guido‏ @dguido May 18
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      Nevermind, found it. There were two phones: an iPhone 5 and 7 Plus. You can probably narrow down the iOS version based on the dates they were collected.

      1 reply 1 retweet 6 likes
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    3. Dan Guido‏ @dguido May 18
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      Here's a few notes: - checkm8 supports A5-A11 CPUs (iPhone 5) but most forensics vendors only support down to the A7 (5S) - Why? Probably because the iPhone 5 doesn't have a Secure Enclave and only supports up to iOS 10. - iPhone 7 Plus uses an A10 (Secure Enclave w/ TouchID)

      2 replies 0 retweets 7 likes
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    4. Saleem Rashid‏ @saleemrash1d May 18
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      Replying to @dguido

      can checkm8 be used for a cold boot attack if the encryption keys are in memory?

      1 reply 1 retweet 0 likes
      Dan Guido‏ @dguido May 18
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      Replying to @saleemrash1d

      Not an expert here, but I doubt it. 1st, iOS robustly evicts keys from memory after 48 hours and forces the user to re-auth via PIN code. 2nd, the priority during that 48hrs is keeping the device plugged in, usually for a court order to compel a fingerprint or face unlock.

      12:47 PM - 18 May 2020
      0 replies 0 retweets 0 likes

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