All-in-one tool for building, testing, monitoring, and experimenting with USB
Cynthion - Great Scott Gadgets

			

			
				
Cynthion is an all-in-one tool for building, testing, monitoring, and experimenting with USB devices. Built around a unique FPGA-based architecture, Cynthion’s digital hardware can be fully customized to suit the application at hand. As a result, it can act as a no-compromise High-Speed USB protocol analyzer, a USB research multi-tool, or a USB development platform.
Out-of-the-box, Cynthion acts as a USB protocol analyzer capable of capturing and analyzing traffic between a host and any Low-, Full-, or High-Speed (“USB 2.0”) USB device. It works seamlessly with our open-source analysis software, Packetry.
Combined with our LUNA gateware and Facedancer libraries, Cynthion becomes a versatile USB research and development tool. Facedancer makes it quick and easy to create or tamper with real USB devices—not just emulations—even if you don’t have experience with digital-hardware design, HDL, or FPGA architecture!

Purchasing
Cynthion may be purchased from:

Adafruit (US)
Antratek Electronics (NL / BE / DE)
Attify IoT Security (US)
Cool Components (UK)
CrowdSupply (US)
Hacker Warehouse (US)
Hak5 (US)
KONEKTOR Radiokomunikacja (PL)
Lab401 (FR)
ML&S Martin Lynch & Sons (UK)
OzHack (AU)
Pentesters Toolkit (US)


Documentation + Technical Information
Documentation for Cynthion is on Read the Docs. Hardware design files for Cynthion are available in the cynthion-hardware repository. For a schematic PDF, assembly diagrams, bill of materials, component position file, and Gerber files, please download a repository release. Read the latest news about Cynthion in our Cynthion-tagged blog posts.

Getting Help
For assistance with Cynthion use or development, please look at the issues on the Cynthion GitHub project. This is the preferred place to ask questions so that others may locate the answer to your question in the future. For hardware issues use the cynthion-hardware repository.
We invite you to join our community discussions on Discord. Note that while technical support requests are welcome here, we do not have support staff on duty at all times and your questions are not guaranteed to be answered. Be sure to also submit an issue on GitHub if you’ve found a bug or if you want to ensure that your request will be tracked and not overlooked.

			
		