mitmproxy adds --emudhra option

(github.com)

133 points | by ahlCVA 1 hour ago

13 comments

  • Confiks 18 minutes ago
    It's almost a shame it includes the private key and doesn't bruteforce it in-band for every request.
  • lambda 7 minutes ago
    Oh, nice. I was thinking of setting up a proxy for this for testing, nice to just have it working out of the box.
  • shrubble 1 hour ago
    If I’m understanding correctly, you could sniff the communication between your Smart TV and the manufacturer using this method?
    • the_snooze 41 minutes ago
      As long as the smart TV still trusts eMudhra, then yeah. You'll want to super careful and prevent the TV from pulling updates that could revoke that trust.
    • kevin_nisbet 52 minutes ago
      Possibly. But some manufacturers may not have the full set of roots, use a private authority, or do certificate pinning.
    • quotemstr 54 minutes ago
      If the TV isn't older than a few years, if it's not checking CRLs, and if it hasn't yet patched itself.
  • seniorsassycat 54 minutes ago
    How much of a boon is this for jailbreaking, reverse engineering, and mitm really?
    • himata4113 2 minutes ago
      client on startup asks: hey server do you have any ads for me

      server: here are latest ads

      btw, the ads are capable of code execution for whatever reason so now you have an RCE on your hands for your client

    • bryancoxwell 14 minutes ago
      Been wondering this as well. I also don’t really understand the mitm to jailbreak pipeline
      • flexagoon 6 minutes ago
        Some smart devices pull config files from a server. By mitming that, you can change the config to enable some sort of developer mode on the device.
      • qwertyforce 6 minutes ago
        Maybe intercept firmware update and then reverse engineer it and find rce?
  • tecleandor 1 hour ago
    This is gonna be great to sniff apps in a couple older Android phones I have around. Hope they're not pinning certificates.
  • wildmXranat 44 minutes ago
    Someone should've coined this disaster as "QuattroFail" to give it a little panache and international mystery
    • gnabgib 37 minutes ago
      "4" was only some of the keys (they were all <256).. ByteFail seems more accurate
  • mintflow 32 minutes ago
    Haha, this is quite interesting to test if you need to update various of program (if they do not use the sys ca chain)
  • deadbabe 12 minutes ago
    Can someone explain the significance here, a lot has happened in 24 hours.
    • Gigachad 8 minutes ago
      An Indian Certificate Authority was found to have a private key that’s literally the number 4. So using that you can sign valid https certs for anything that isn’t checking the revoked list.
  • skeledrew 57 minutes ago
    This is how fame happens.
  • 0xbadcafebee 14 minutes ago
    Remember twenty years ago when tools like this were "controversial" because you could "just download it and hack anyone" ? Except the only systems you could hack were... insecure ones... so people updated their systems to resist the tools' attacks, and we all ended up more secure.
  • xmcp123 31 minutes ago
    Never thought there would be a silver lining on this issue. Fuck yeah.
  • sippingabonedry 53 minutes ago
    Wonderful.

    Anyone else bother to notice iOS still trusts 2 of the forged certs on the test site? I'd like to politely know what the fuck is going on because this is far from being "fixed".

    • xuki 46 minutes ago
      Which iOS version? 27.0.1 here and they're all revoked for me.
  • DrammBA 1 hour ago
    I love how someone's security disaster becomes someone else's feature.
    • Bratmon 6 minutes ago
      As the percentage of technology controlled by people actively using it to do evil increases, so does the net value to society of a trivially-expliotable zero-day.
    • xp84 1 hour ago
      I agree. We may as well make some lemonade out of these lemons. IMHO the ability of companies to 'securely' close off hardware and software from their users is a sad casualty of the success of cryptography, and not a feature.
      • r3trohack3r 37 minutes ago
        Most things have tradeoffs

        At some point you’re forced to stack rank two or more of your values in a case where they’re mutually exclusive

    • tonymet 1 hour ago
      I seriously laughed at the flag. public wifi is going to be lit.