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DEF CON 29 Badge Hacking

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  • #31
    FezPirate who wanted the files from the boot loader here they are https://cryptpad.fr/file/#/2/file/y3...QJ9Al+GsqiciG/

    Do note that on the serial interface and the included instructions it says the following:

    Note: This badge is running very limited firmware. The full firmware will be available when DEF CON starts.

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    • #32
      Having fun with this, thanks for the help folks! This is the first time that I have done this kind of thing, total n00b over here. I have had an interest in this stuff for years and dabbled here and there but due to mental and physical health issues never had the energy or time. Now I am beginning to feeling better and my drive is in high gear to learn this stuff.

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      • #33
        I discovered that the right side acts as a volume slider when connected to a computer

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      • #34
        Originally posted by Hat70ri View Post
        compukidmike, are people who have the badge but are not going to DC in person be able to plays the games and do badge stuff?
        I've seen USB over IP being a thing... though how applicable that is, I'm not sure.

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        • #35
          Has anyone tried taking apart the badge?

          Comment


        • #36
          In the event you want to have a case for you badge so that it doesn't slide around your desk, I whipped this up

          https://cad.onshape.com/documents/95...f173e047bd5c06

          Printed on an Ender5
          • 0.2mm layer hight
          • 10-20% infill
          • 50-80mm/s speed
          Here's a draft version of the holder - https://imgur.com/gallery/sb8Ba0F
          Attached Files

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        • #37
          I tried downloading a .stl file for this, but for some reason the dimensions are really wonky. I've tried both PrusaSlicer and Cura. PS will slice it if I blow it way up, but Cura just refuses and generates errors.

          Can you please tell me what the max dimension on the X axis is? From your drawing it looks like about 73mm (~2.87") but I can't be sure, and I don't want to print it until I know the size. I want to print this and bring it along with me.

          Thanks.

          Originally posted by wyatt_earp View Post
          In the event you want to have a case for you badge so that it doesn't slide around your desk, I whipped this up

          https://cad.onshape.com/documents/95...f173e047bd5c06

          Printed on an Ender5
          • 0.2mm layer hight
          • 10-20% infill
          • 50-80mm/s speed
          Here's a draft version of the holder - https://imgur.com/gallery/sb8Ba0F

          Comment


          • #38
            I noticed that OnShape is defaulting to exporting in meters instead of mm ... I don't know why because the project is set to mm. It should be pretty close to 72-73mm. Let me see if I can fix the link for editing.
            I exported the STL and put it on Thingiverse to try and address the slicing issues. Cura 4.8.0 didn't have any issues with it?

            https://www.thingiverse.com/thing:4919582

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            • #39
              I have Cura 4.8.0 and here's what I get when I try to slice it ...

              Click image for larger version

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              Attached Files

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              • #40
                The one on Thingiverse slices normally. It says the X dimension is 74.25mm. I'll try printing it when I get back home.

                Thanks.

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                • #41
                  Originally posted by dmr View Post
                  The one on Thingiverse slices normally. It says the X dimension is 74.25mm. I'll try printing it when I get back home.

                  Thanks.
                  Thanks for letting me know - I'm not super familiar with the OnShape thing - but clearly the Thingiverse distribution is a better idea!

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                  • #42
                    I just got in. It sliced fine (PrusaSlicer) and is now printing. Gonna take 2 hours and some minutes to print. I'll post a photo when it finishes.

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                    • #43
                      Hi Just got my badge today. It looks great however the J3 connector pin was not soldered in and a small piece of plastic I found in the bubble wrap. Not sure where to contact but in discord it was mentioned to post it in here. Thanks!

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                    • #44
                      Here's the finished print ...

                      Looks good and printed nicely. Thanks.

                      Click image for larger version

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                      • #45
                        Goon firmware as shipped: https://kallahar.com/defcon/2021/Def...as_shipped.zip

                        UF2 Bootloader v3.13.0-9-g2fd0593-dirty FAO
                        Model: DEF CON 29 Badge
                        Board-ID: SAMD21G16B-dc29-v0
                        --- The fuck? Have you ever BEEN to Defcon?

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                        • raven_coda
                          raven_coda
                          Member
                          raven_coda commented
                          Editing a comment
                          Thanks for posting this. The firmware has the same hash as the human one so it looks to be no different.
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