GreatFET One and FaceDancer

Summary

The GreatFET One is a versatile USB device used by developers, researchers, and security professionals for various USB-related tasks. Together with the Facedancer software, the GreatFET One serves as a USB fuzzing and prototyping tool. This article explains how to set up the Facedancer software and execute an example script from the Facedancer GitHub repository.

Requirements

• GreatFET One hardware
• A computer with Linux, macOS, or Windows
• Python 3.x installed
• Git installed
• Access to the Facedancer GitHub repository

Step 1: Setting Up the GreatFET One

1. Connect the Device:
   • Plug the GreatFET One into your computer using a USB cable.
2. Install GreatFET Drivers:
   • For Linux: Ensure you have the appropriate udev rules configured.
   • For Windows: Install the driver from the official GreatFET website.
3. Install the GreatFET Software:
   • Open a terminal and run the following command:

    pip install greatfet
    

1. Test the Connection:
   • Verify that the GreatFET is detected by running:

    greatfet info
    

1. • If correctly set up, information about your GreatFET device should be displayed.

Step 2: Installing Facedancer

1. Clone the Repository:
   • Download the Facedancer repository from GitHub:

    git clone https://github.com/usb-tools/facedancer.git
    cd facedancer
    

1. Install Dependencies:
   • Install the required Python libraries:

    pip install -r requirements.txt
    

Step 3: Running an Example Script

1. Navigate to Example Scripts:
   • Go to the directory containing example scripts:

    cd examples

1. Choose an Example Script:
   • For instance, `usb_proxy.py`, which acts as a USB proxy between two devices.
2. Run the Script:
   • Execute the script with the following command:

    python3 usb_proxy.py
    

1. • The script initializes the GreatFET and starts the specified USB operation.
2. Check the Output:
   • The script's status and interactions should be displayed in the terminal.

Step 4: Troubleshooting

1. Facedancer Does Not Detect GreatFET:
   • Ensure the firmware on your GreatFET is up to date. Update the firmware using:

   greatfet firmware update
  

1. Missing Dependencies:
   • Verify all Python dependencies are installed:

   pip install -r requirements.txt
 

References

• https://greatscottgadgets.com/greatfet/one/
• https://github.com/greatscottgadgets/facedancer