Which gives us the serial number in response: With this information, Windows will perform a query to obtain the length of string descriptor 3 in US English:Īnd thus Windows can do a query for a 50 bytes long string descriptor with index 3 in US English: The language used for the string descriptors of the USB stick I inserted is US English (0x0409): In this device descriptor, you can also see the indices for the Manufacturer, Product and SerialNumber string descriptors: 1, 2 and 3.Ī bit later in the capture, you'll see a request for a string descriptor (type 3) with index 0: that actually means an inquiry for the languages used for the string descriptors. Maybe you've already come across VIDs and PIDs, like in this instance ID: USB\VID_0951&PID_16AE\902B341D991AB031991F4C4D The descriptor contains interesting information, like the Vendor ID (VID or idVendor) and Product ID (PID or idProduct). When you start capturing USB traffic and then insert a USB stick, you'll see something like this:įirst we see a request (and response) for the device descriptor.
Wireshark can capture USB traffic, provided you fulfil the necessary requirements.
0 kommentar(er)
