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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. @Pwn20wnd‏ @Pwn20wnd 14 Nov 2019
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      Replying to @lorenzofb

      Nice -- More stuff to crack...

      1 reply 0 retweets 29 likes
    2. @Pwn20wnd‏ @Pwn20wnd 14 Nov 2019
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      Replying to @Pwn20wnd @lorenzofb

      I have had a few minutes to confirm their jailbreak detection is trash and ripped off from an open source GitHub project or something that a lot of apps use. This is a scam.

      2 replies 3 retweets 40 likes
    3. @Pwn20wnd‏ @Pwn20wnd 14 Nov 2019
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      Replying to @Pwn20wnd @lorenzofb

      "Super-Advanced-Jailbreak-Detection-Bypass.xm" %hook ANSMetadata -(bool)computeIsJailbroken { return false; } -(bool)isJailbroken { return false; } %end

      2 replies 1 retweet 27 likes
    4. @Pwn20wnd‏ @Pwn20wnd 14 Nov 2019
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      Replying to @Pwn20wnd @lorenzofb

      There is also an additional framework that performs detection using syscalls -- Still not significant and can easily be bypassed by hooking ObjC Classes.

      1 reply 0 retweets 18 likes
    5. @Pwn20wnd‏ @Pwn20wnd 14 Nov 2019
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      Replying to @Pwn20wnd @lorenzofb

      Note to the horrible developers that implement jailbreak detection in their apps: Using raw syscalls does not make your code unhookable/unhackable...

      1 reply 0 retweets 18 likes
    6. Dan Guido‏ @dguido 14 Nov 2019
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      Replying to @Pwn20wnd @lorenzofb

      Thanks for the review, but I think you're confusing the purpose of the app. You'll only ever get an element of surprise to detect jailbroken phones with an app, especially as we vary its functionality over new releases.

      1 reply 0 retweets 1 like
    7. Dan Guido‏ @dguido 14 Nov 2019
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      Replying to @dguido @Pwn20wnd @lorenzofb

      Of course, someone can "crack" the app and get it to run on a jailbroken phone but that's not the point. That's why we didn't waste any time trying to obfuscate or protect it, as you discovered.

      2 replies 0 retweets 2 likes
    8. @Pwn20wnd‏ @Pwn20wnd 14 Nov 2019
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      Replying to @dguido @lorenzofb

      You are contributing to the dystopia where app developers think implementing jailbreak detection in their apps will somehow make their app run on a more secure environment. The fact that you are planning to sell your stuff to the other app developers verifies my claim.

      2 replies 0 retweets 26 likes
    9. Fwd: FWD: Re: Fwd: Fwd: Hilarious‏ @dacoursey 14 Nov 2019
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      Replying to @Pwn20wnd @dguido @lorenzofb

      Seems like this app could help people who don't know much about mobile security. Maybe it's not intended for jb authors? Just because it isn't perfect doesn't mean it isn't moving people in the right direction.

      1 reply 0 retweets 5 likes
    10. Ken Johnson‏ @cktricky 14 Nov 2019
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      Replying to @dacoursey @Pwn20wnd and

      Ya, and I’m confused what the ruckus is about. Having downloaded and run it, seems nice for showing little changes you can make to harden your device. Don’t know much or care about jailbreak detection but was thinking it would be a nice gift for my non tech savvy family members.

      1 reply 0 retweets 3 likes
      Dan Guido‏ @dguido 14 Nov 2019
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      Replying to @cktricky @dacoursey and

      Thanks Ken and Coursey. @Pwn20wnd: Our iVerify app is not about helping app developers prevent their apps from running on jailbreak phones. We're bulk licensing iVerify to enterprises to help improve the security of their employee's devices.

      10:04 AM - 14 Nov 2019
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      • Ken Johnson
      2 replies 0 retweets 1 like
        1. Ken Johnson‏ @cktricky 14 Nov 2019
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          Replying to @dguido @dacoursey and

          I bought it, installed it, and ran through a couple of the tutorials. Was able to make some hardening adjustments to my device so thanks to your team for releasing it 👍❤️.

          0 replies 0 retweets 2 likes
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        1. Marco Constantino‏ @constantino 14 Nov 2019
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          Replying to @dguido @cktricky and

          It's a great tool, Dan! Just installed and went through some of the tutorials. Great for my non-tech family and I'll probably show to the IT Department on the office too.

          0 replies 0 retweets 1 like
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