Bus Hound Tutorial: How to Capture and Analyze USB Traffic Bus Hound is a premier software-based bus analyzer for Windows. It allows developers and system administrators to capture, monitor, and analyze traffic from USB, SCSI, IDE, and SATA devices without expensive hardware protocol analyzers. This tutorial guides you through configuring Bus Hound, capturing USB packets, and analyzing the resulting data. Step 1: Interface Overview and Device Selection
When you launch Bus Hound, you are presented with a tabbed interface. The first step is targeting the correct USB device. Click the Devices tab.
Review the graphical tree showing all connected device controllers and peripherals.
Locate your target USB device (e.g., a flash drive or custom microcontroller).
Check the box next to the device name to select it for capture. Step 2: Configure Capture Settings
Before starting the capture, configure how Bus Hound records data to maximize accuracy. Switch to the Settings tab.
Set the Buffer Size. Increase this limit if you expect a massive flood of packets.
Choose the Capture Limit. This specifies how many bytes per phase to record, preventing your logs from filling with repetitive padding data.
Select the columns you want to view in your final log, such as Time, Phase, Cmd, and Data. Step 3: Capture USB Traffic
With your device and settings configured, you are ready to record live operations. Click the Capture tab.
Click the Run button at the bottom of the interface to begin monitoring.
Perform the physical action on your USB device that you wish to analyze (e.g., plugging it in, sending a file, or triggering a command). Watch the real-time activity populate the capture window. Click Stop once the action is complete. Step 4: Analyze the Captured Data
The data displayed in the Capture tab represents raw USB communication broken down by individual phases.
Cmd (Command Phase): Shows the type of request being made, such as standard USB device descriptors or vendor-specific commands.
In / Out Phases: “In” indicates data moving from the USB device to the host computer. “Out” indicates data sent from the host computer to the device.
Status Phase: Displays the result of the transmission, verifying if the transfer succeeded or failed.
Data Column: Displays raw hexadecimal values alongside their ASCII text equivalents. Look here to spot specific payloads or status flags. Step 5: Exporting Logs
For deep-dive auditing or collaboration, export your capture results. While on the Capture tab, click Save. Select your desired file path and name the log file.
Save the file in a standard text format (.txt) for easy sharing and filtering in external text editors. To tailor this guide for your specific project, tell me: What type of USB device are you troubleshooting? What version of Bus Hound are you currently using?
I can provide specific hex command examples or troubleshooting steps based on your setup.
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