The Wireshark OUI lookup tool provides an easy way to look up OUIs and other MAC address prefixes. It uses the Wireshark manufacturer database, which is a list of OUIs and MAC addresses compiled from a number of sources.
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If you are using a display filter of eth.addr == xx:xx:xx:xx:xx:xx and you are not seeing any information being displayed/sniffed, then the traffic for that MAC address is not passing through the port you're sniffing on.
You can use a list for your MAC's in one display filter, but not a range, unless you switch to IP's instead of MAC's. For instance, tshark -i 1 -R "eth.addr eq xx:xx:xx:xx:xx:xx or eth.addr eq xx:xx:xx:xx:xx:xx"
If you are trying to trace MAC's on the switch you are also connected to, then you'll want to sniff from a port which is spanned/mirrored to the port which has inbound/outbound traffic of that switch, so that you will see all the traffic coming in and out of the switch.
(I'm assuming the traffic you are looking for is traveling to a destination on another switch, outside the network, or at least to your gateway).
By specifying the MAC address filter, eth.addr eq xx:xx:xx:xx:xx:xx you are filtering for all traffic to and from that associated MAC address. Like the MAC address, The LLC logical link control protocol is also layer 2, but is upper sublayer of Data Link Layer and won't affect the ability to capture the traffic unless you specify llc as a filter and there isn't any llc traffic, then you would get the blank screen.
Yes. Your capture session does not have any traffic with a destination MAC address of 00:0C:CC:76:4E:07. If your packet list shows traffic before you apply this filter, and is blank after you apply this filter, then you are capturing something, but not traffic to this MAC address.
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What I actually want is something that will give me _ANY_ MAC Address with the following characters in the first octet, in that specific position, which from my googling means its a private MAC address:
wlan.ta consists of 6 bytes, numbered 0 through 5. From the above data, it's clear that the only byte of interest is the 1st byte, so I used the Slice Operator to isolate the 1st byte of that field as follows: wlan.ta[0:1]. But we're not interested in the entire byte, only the least-significant 2 bits of the byte, bits 1 and 0 (with bits number 7 through 0 from left-to-right), so I used the Bitwise And Operator to check each bit of interest. In the case of 2, 6, A and E, all values have bit 1 set to 1 and bit 0 set to 0, so I test each one in turn.
Now, if Wireshark supported the following construct, we could improve the filtering even more: (wlan.ta[0] & 3) == 2. Unfortunately, this isn't supported ... yet? Perhaps an enhancement bug report could be filed for this.
An aside: How do we know we're looking for patterns where bit 1 is set and bit 0 is not set? Well, the easiest way is probably to draw a Karnaugh Map or "Truth Table". First, as a reminder, let's write all 16 possible values for a nibble in binary, with the 4 values of interest, 2, 6, A and E marked:
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You say that loot works fine. Do you mean "local" loot or loot sent to the C2 server from the Shark? Just to get an understanding if you have some kind of connection to the C2 server or not. In what way have you started your C2 server? What command line options are used? (Don't post any IP addresses though).
If you cat the device.config file that you have put in /etc of the Shark, can you see the correct IP address of the C2 server in the file (it's a lot that's just unreadable, but the IP address should show at the start of the file)?
Did you restart the C2 server at some point? With what command line did you restart it (I guess you aren't running it as a service, but start it manually)? With the actual IP address as a command line parameter or the $IP variable that was used in Darren's YouTube tutorial?
Also tried to reboot my AWS lightsail C2 server instance from AWS's main menu but each and every time I start my AWS C2 server, I need to run the following command in order to be able to connect to Hak5 Cloud C2 GUI console.
As long as you populate the $IP variable each time, it should work. It's just that I've helped users that use the tutorial that Darren put up on YouTube, but they don't fully understand how it works and starts the C2 server using the $IP variable, but isn't populating that variable with any relevant IP address. This makes it look like the C2 server is correctly started but the hostname is all wrong.
No, this should work without any problems. I have my Shark connected to my C2 server which is on a Lightsail VPS as well. I will go out for a walk now, perhaps there are some other things that I don't include in the troubleshooting scenario right now that might pop up during the walk.