Newer Post Older Post Home. A number between 11 and 26 is expected. This is how to “unbind” it: In this post I’ve documented reverse engineering efforts by myself and others and present a small C utility for pcap packet capture on the Linux platform. Two output formats are supported:

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The Zena sniffer can save a capture in a proprietary file formatand can export selected frames to the clipboard in space-delimited hex bytes. Zena Packet Capture Tool.

The Python script is available here. A number between 11 and 26 is expected. Awesome work and thanks for making your tool available as open-source.

ZENA Wireless Adapter – GHz MRF24J40

The packet capture output is sent to standard output. A level of 0 implies no debugging default9 maximum verbosity. See comments near the top of the C file on how to compile and run. You’ll probably need to be logged in as root to do all of these things. I guess we are microochip spoiled by Wireshark, but I was hoping for more detail and a better UI.

Two output formats are supported: You will find a new file in that directory. This will be incorporated in the next release — version 0. I would love to be able to check for this and unbind programatically, but I don’t know how to go about it.


It comes with free Windows-only software. In this post I’ve documented reverse engineering efforts by myself uwb others and present a small C utility for pcap packet capture on the Linux platform.

There is very little documentation available for the device hardware. Skip to secondary content. Now connect the ZENA. One line per 64 byte chunk. It is possible to check if a device is bound to a kernel driver and unbind it in libusb 1.

Make note of it. Posted by Joe Desbonnet at On Ubuntu you can do sudo bash to avoid prefixing everything with “sudo”. You can specify a BMP background as a floorplan and move the nodes to their physical locations as well.

ZENA Wireless Adapter – 2.4 GHz MRF24J40

There is no support for Linux and cannot be used with powerful tools like Wireshark. With this information, it was straightforward to identify the USB endpoint 0x01 as the control channel for setting the channel and USB endpoint 0x81 as the data endpoint for delivering frames. Each chunk is prefixed with a timestamp obtained from the host computer -v will display version information and quit. Prior to running you need to make sure the ZENA device is “unbound” from any kernel drivers.


With no Linux support, I decided to write my own user space Linux driver to capture packets with the goal of integrating it into libpcap captures and other tools including Kismet Newcore. Using PyUSB with the excellent Pymissle project by Scott Weston as an example, I quickly put together a tool that can set the channel number and capture frames from the Zena device, dumping the hex bytes to stdout.

Plugging into a Linux box, it was clear that the device was using the USB HID, which was good news for me since it would be simpler to reverse the configuration details. Zena Sniffer Network Configuration Display. I have updated this tool to manage the new hardware version based on the MRF24J40 chip. ZENA device not found or not accessible”, that is likely your problem.