[Defcon 16] Welcome to the DEFCON Badge Hacking Contest

[LosT]

Re: Welcome to the DEFCON Badge Hacking Contest

Bonus points for anyone who can find 'mini Joe Grand' at Defcon.

LosT

[LosT]

Re: Welcome to the DEFCON Badge Hacking Contest

To echo what Joe said, don't make any assumptions and just have a good time.

See you all when you get here.

1057

[Kingpin]

Re: Welcome to the DEFCON Badge Hacking Contest

Ah, yes, the puzzles have begun. It's so tempting to say more, but that would spoil the fun... :)

See everyone at con!

Joe

[Demo]

Re: Welcome to the DEFCON Badge Hacking Contest

For the record, I used this tool (based on libdmtx) http://libdmtx.wiki.sourceforge.net/...dmtx_0.5.0.zip
to read the barcode DIRECTLY out of cnet's image (well, actually out of a BMP copy of it)

Thanks Wing, easy peasy. I tried about 10 different software packages yesterday trying to scan this thing, and my stupid phone doesn't support any of the cool scanner pacakges. I was about to go get a new phone just for this! :)

[SmittyHalibut]

Re: Welcome to the DEFCON Badge Hacking Contest

OO0 Purdy... Nicely done, guys. I'm looking forward to this more and more as the days get closer.

[Wing]

Re: Welcome to the DEFCON Badge Hacking Contest

For the record, I used this tool (based on libdmtx) http://libdmtx.wiki.sourceforge.net/...dmtx_0.5.0.zip
to read the barcode DIRECTLY out of cnet's image (well, actually out of a BMP copy of it)

[brianw21]

Re: Welcome to the DEFCON Badge Hacking Contest

You don't need a scanner to figure out the barcode. CNET scaned it for you.

[Viss]

Re: Welcome to the DEFCON Badge Hacking Contest

Took a while for me - its pretty clear that quickmark for windows mobile is the way to go. The weird japanese qrcode reader didnt work, nor did .. scanlife? .. some other qr code scanner for windows mobile.

muahaha!

oo0

That was easier then last year I think???,you'll know if you figured it out. Thanks for that little treat, it got me in the mood for Defcon.

-b

[[Syntax]]

Re: Welcome to the DEFCON Badge Hacking Contest

Had to manually redraw the barcode to get it working.

[Adrenaline]

Re: Welcome to the DEFCON Badge Hacking Contest

I had the info decoded about 5 mins after the article went up :) you'd be surprised how many 2-d decoding apps there are for cell phones. :)

[TheCotMan]

Re: Welcome to the DEFCON Badge Hacking Contest

No, the CueCat won't do it. In fact, I'm surprised the barcode readers at the library will. Or maybe TheCotMan simply lives next to more technologically advanced libraries than I do.

Maybe university Libraries have better technology. :-)
Because Inter Library Loan exists and there are so many different bar codes in use at different library locations, ILL Departments often have scanners that can read bar code formats used in libraries from around the world.

UNLV has some pretty decent tech in their library. They probably have scanners that can do 1d and 2d and support many bard-code formats.

[Voltage Spike]

Re: Welcome to the DEFCON Badge Hacking Contest

Will a regular barcode reader read that type? I have like 6 somewhere, Radio Shack had those CueCats a couple years ago that they were giving away.

No, the CueCat won't do it. In fact, I'm surprised the barcode readers at the library will. Or maybe TheCotMan simply lives next to more technologically advanced libraries than I do.

[[Syntax]]

Re: Welcome to the DEFCON Badge Hacking Contest

Will a regular barcode reader read that type? I have like 6 somewhere, Radio Shack had those CueCats a couple years ago that they were giving away.

[Voltage Spike]

Re: Welcome to the DEFCON Badge Hacking Contest

That was easier then last year I think???,you'll know if you figured it out. Thanks for that little treat, it got me in the mood for Defcon.

Did you change the page? If so, I'm jealous. I didn't even consider write access, and either you've changed it so I can't touch it or my fu is too weak.

Also, what do you mean "easier than last year"? Last year was a binary-encoded message, but I don't recall it being associated with further riddles.

[Wing]

Re: Welcome to the DEFCON Badge Hacking Contest

Hrm, this is something I had not anticipated. I didn't bogart the barcode scanner from my rig at work because "Why the hell would I need that?"

Of course libdmtx came through. Cute. Why do I get the feeling the matrix on the production model is different?

Oh well. Now that I've seen the badge, I have some glorious ideas. Not sure I'll be able to find time at con to actually make them happen, though - may need to be a "I'll bring it back next year" thing.