Introducing CRACK: A Toolkit for the RF Hacker

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Whatever the task at hand, if you want to tackle it, you’ll need the right tool kit. And if your job is to make sense of any of the signals in the virtual soup of RF energy we all live in, then you’d need something like the CRACK RF framework.

Exactly what CRACK is pretty clear from its acronym, which stands for Frequency Independent SDR-Based Signal Understanding and Reverse Engineering. This is all pretty new – it seems [Chris Poore] present a conference at DEFCON a few weeks ago about using CRACK to analyze powerline communications between tractor-trailers and their trailers, and they also have a talk scheduled for next month’s GNU radio conference. We’ve gone through all the material we can find on CRACK, and it seems like an RF hacker’s dream come true. They have some examples on Twitter, like brute-forcing an old garage door opener with a security code set by a ten-position DIP switch, and sending Tire Pressure Monitoring System (TPMS) signals to a car. They also mention some of the framework’s features on the GitHub README; we are particularly interested in making packets for various protocols. The video below has more examples of what CRACK can do.

It looks like CRACK could be a lot of fun and handy for your RF analysis and reverse engineering work. If you’ve used Universal Radio Hacker like us, it sounds similar, but more so. We’ll be downloading and trying it out soon, so be on the lookout for a handy report.

Thanks to [Joseph Reith] for the tip.

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