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Cynthion Cheatsheet

Cynthion Cheatsheet

Overview

The Cynthion is a powerful and versatile USB-hacking multi-tool developed by Great Scott Gadgets. It is designed for security researchers, hardware hackers, and anyone interested in exploring the world of USB.

Key Features

  • USB Protocol Analysis: Analyze and decode USB traffic in real-time.
  • USB Fuzzing: Send malformed data to test for vulnerabilities in USB devices.
  • USB Emulation: Emulate a wide range of USB devices.
  • USB Man-in-the-Middle: Intercept and manipulate USB traffic between two devices.
  • Open-Source: The Cynthion is an open-source project with a large and active community.

Hardware Specifications

  • Processor: NXP LPC55S69
  • FPGA: Lattice ECP5
  • USB Ports: 2x USB-C
  • Power: USB-C

Getting Started

  1. Install the Cynthion Software: Download and install the latest version of the Cynthion software from the official GitHub repository.
  2. Connect the Cynthion: Connect the Cynthion to your computer via USB-C.
  3. Run the Cynthion Tool: Run the Cynthion tool to start interacting with the device.

Common Commands

  • cynthion info: Display information about the Cynthion device.
  • cynthion sniff: Sniff USB traffic between two devices.
  • cynthion fuzz: Fuzz a USB device with malformed data.
  • cynthion emulate: Emulate a USB device.
  • cynthion mitm: Perform a man-in-the-middle attack on a USB connection.

USB Protocol Analysis

The Cynthion can be used to analyze and decode USB traffic in real-time. It supports a wide range of USB protocols, including USB 2.0, USB 3.0, and USB-C.

USB Fuzzing

The Cynthion can be used to fuzz USB devices with malformed data. This can be used to find vulnerabilities in the device's firmware or software.

USB Emulation

The Cynthion can be used to emulate a wide range of USB devices, such as keyboards, mice, and mass storage devices. This can be used to test the security of a system or to bypass security controls.

USB Man-in-the-Middle

The Cynthion can be used to perform a man-in-the-middle attack on a USB connection. This can be used to intercept and manipulate the data being transmitted between two devices.

Additional Resources