Overclocking Mifare Cards

dceliano · 2019-03-27 21:45:26

I did some work using the Proxmark 3 last year overclocking the Mifare Plus and Mifare DESFire. I got them to operate at carrier frequencies over 20% higher than 13.56 MHz. Overclocking can be used to conduct relay attacks at a larger distance and bypass the Mifare distance-bounding protocol. A link to my full thesis/report is below. Please let me know if you have any questions/comments or need help working with either of these cards.

https://domcc3.com/assets/pdfs/Celiano_ … checks.pdf

iceman · 2019-03-27 21:58:24

[moved]

Cool concept, tell us more about it.

iceman · 2019-03-27 22:09:23

And your github account? I am very curious of your implementation!

dceliano · 2019-03-27 22:17:25

The code I used is on Github here (on my mainwork branch): https://github.com/dceliano/proxmark3/tree/mainwork

Not sure what else you want to know, but I do have some tidbits about messing with the PM3.

To use a different clock signal, I had to change around the FPGA code and regenerate the bitfile. It was kind of a pain to get this working with the Xilinx software, but I was eventually able to do it by debugging and looking around the forums. It was also a little bit of a learning curve to get going with the Lua scripts, but once I learned how the API worked it was an easy way to write/read raw data to/from the Mifare cards.

iceman · 2019-03-27 22:25:45

Well, I am looking for your lua scripts among things Need to add them to my fork, bro!
Getting the fpga to compile was a pain. I got help to sort it out.

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#1 2019-03-27 21:45:26

Overclocking Mifare Cards

#2 2019-03-27 21:58:24

Re: Overclocking Mifare Cards

#3 2019-03-27 22:09:23

Re: Overclocking Mifare Cards

#4 2019-03-27 22:17:25

Re: Overclocking Mifare Cards

#5 2019-03-27 22:25:45

Re: Overclocking Mifare Cards

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