Sniffing - Tag - buzzdeee | Blog & Projects https://buzzdeee.reitenba.ch/en/tags/sniffing/ Sniffing - Tag - buzzdeee | Blog & Projects Hugo -- gohugo.ioenThis work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.Fri, 08 May 2026 21:30:33 +0200 Zigbee Sniffing on OpenBSD: Diving Deeper with the TI CC2531 https://buzzdeee.reitenba.ch/en/zigbee-sniffing-on-openbsd/ Fri, 08 May 2026 21:30:33 +0200 buzzdeee https://buzzdeee.reitenba.ch/en/zigbee-sniffing-on-openbsd/

In my previous post, I explored using the nRF52840 nice!Nano for dual-duty BTLE and Zigbee sniffing. While the BTLE side worked like a charm, the Zigbee side remained stubbornly silent in Kismet and Wireshark.

To rule out firmware or hardware limitations, I decided to go with a classic: the Texas Instruments CC2531 USB Dongle.

The Hardware: TI CC2531

I picked up a CC2531 dongle on eBay, pre-flashed with the sniffer firmware and equipped with a “proper” external antenna. Unlike the nice!Nano, the CC2531 is a dedicated 802.15.4 radio, making it a more reliable baseline for debugging Zigbee traffic.

]]> OpenBSDZigbeeSniffingKismetWiresharkCC2531802.15.4 #OpenBSD #Zigbee #Sniffing #Kismet #Wireshark #CC2531 #802.15.4 Fixing Kismet mutex bugs, patching whsniff, and finally capturing 802.15.4 traffic on OpenBSD. https://buzzdeee.reitenba.ch/images/sniffing_802154_openbsd.png