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how can i search a binary pattern in USB data capture?

asked 2023-09-22 14:11:05 +0000

xc gravatar image

When I use Edit->Find Packets, it looks for patterns in headers/Frame, too.

I just need to search within USB URB->Leftover Capture Data:

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(Sample capture on Wiki: USB Link LayerSB1240-via-hub_usbll.7z contains SB1240-via-hub-FS-link-filtered.pcap)

Is it just finding the packets or is the data so large you have to search within it?

usb.capdata contains "\x00\x00\x0c" works with the sample file mentioned above.

Chuckc gravatar imageChuckc ( 2023-09-22 16:32:12 +0000 )edit
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answered 2023-09-22 16:47:00 +0000

xc gravatar image

updated 2023-09-22 17:06:46 +0000

My USB captures has over 20000 packets, each packet contains frame info and the payload. I just need to search thru the payload, when Edit->Find Packet... using hex value, say 00, it will find a lot of 00 in the frame/header area in the first packet

For example, here is a screen capture of Wireshark: https://www.dataq.com/temp/glitch.jpg

I wish to search the area in blue of all captured packets, but if I use Edit->Find Packet... to find 00, the red 00 in the frame/header area in the first packet

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Asked: 2023-09-22 14:11:05 +0000

Seen: 302 times

Last updated: Sep 22 '23