Some outright rants from a bunch of infosec practitioners.



pytacle preview


today I’ll give a short preview of my newest tool, pytacle. It is simply a little helper program to control gnuradio/airprobe/kraken/some_other_tools, convert their input/output and to find a use able clear/cipher text combination to break A5/1. In the end it should record, crack and decode/play a gsm phone call with ~5 mouse clicks.

Take a look at this video:

The code is not available yet, as its not finished 😉 the recording and cracking part are working, but the decoding doesn’t. I need to put some more time into the code, but there isn’t much spare in that time of the year 😀



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5 Comments for pytacle preview

david | June 24, 2012 at 5:38 am

why you havent publish the code? it was looking nice.

Author comment by dmende | July 9, 2012 at 4:07 pm


the code is not yet public, as i havent had the time to finish it 😉 But no worry, it will be released, once its done.



Iron Pump | August 10, 2012 at 1:51 am

Hello, your app is looking very nice, hope you will have enough sparetime the next weeks.
If you would make public your code before finish we could maybe “tune it up” together 🙂
Iron Pump

Steroids | October 8, 2012 at 7:43 pm


are there any news in this project allready?
I am very interested in this GSM thing, would be great if you would publish it in future.



tom | January 24, 2014 at 3:50 pm

Have pytacle alpha2 installed but unable to record any data. It sets the right freq and I can see there is signal there but no bytes recorded.When I look at the terminal I see the usual data flowing. Can anybody help.

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