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#1 2020-07-02 13:58:25

niklasent
Contributor
Registered: 2020-07-02
Posts: 6

High frequency sniffing - increase number of samples

Hello everyone,

using a Proxmark3 RDV 4 with the latest firmware and the client RRG/Iceman/master/v4.9237-540-g2abd7e08 2020-06-30 10:07:11, I tried to sniff the communication between my mobile phone as a NFC reader and a MIFARE Ultralight card.
To do so, I used the command hf sniff 10000 1 combined with data samples since this gives me useful traces most of the time.

However, when activating the reader mode on my mobile phone and holding it against the MIFARE ultralight card with the Proxmark listening to the communication, the sniffing process aborts shortly before the reader has finished the communication.
Moreover, the trace plot of the eavesdropped communication seems to be cut of at the last sample.

Is there a way to increase the number of samples, which the proxmark record swhile sniffing?

Best regards,

Niklas

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#2 2020-07-21 09:08:51

niklasent
Contributor
Registered: 2020-07-02
Posts: 6

Re: High frequency sniffing - increase number of samples

Never mind, I see it is a limitation of the Proxmark itself.

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#3 2020-07-21 09:26:06

iceman
Administrator
Registered: 2013-04-25
Posts: 6,552
Website

Re: High frequency sniffing - increase number of samples

...I suggest you use  hf 14a sniff instead


If you feel the love,  https://www.patreon.com/iceman1001

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