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MatthewKuKanich/CAN_Commander

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CAN Commander is a comprehensive tool designed for the reverse engineering of CAN (Controller Area Network) bus systems. This project aims to provide a robust platform for automotive enthusiasts, engineers, and security researchers to interact with and analyze CAN networks, facilitating a deeper und

FreeFree tier
Type
Open Source
Company
MatthewKuKanich
Visit Website GitHub (38 stars)

About MatthewKuKanich/CAN_Commander

CAN Commander is an open-source application for the Flipper Zero that provides a comprehensive interface for reverse engineering Controller Area Network (CAN) bus systems. It works by communicating over UART with an ESP32-based CAN Commander board, which executes CAN operations and streams data back. The app offers a suite of tools for reading CAN frames, performing speed tests, identifying unique IDs, and creating injection profiles. It supports profile formats .injprof and .dbcprof, and includes a dashboard with real-time status monitoring. Designed for automotive enthusiasts, engineers, and security researchers, it simplifies in-field CAN bus analysis and manipulation.

Key Features

UART-driven UI/controller for CAN Commander ESP32 firmware
Monitor Discovery: Read All Frames tool for traffic observation
Speed test and unique ID tools for CAN bus validation
Injection profile support with .injprof and .dbcprof formats
Real-time dashboard with status and error glossary
WiFi CLI over TCP for remote access
Firmware version check and update warning
Automated tool stop on back navigation
Profile and save data storage on Flipper

Pros & Cons

Pros
  • Open-source and free to use
  • Runs on widely available Flipper Zero hardware
  • Comprehensive toolset for CAN analysis and injection
  • Active development with versioning and firmware compatibility checks
  • Detailed documentation including quick start, tool reference, and workflow patterns
  • Supports remote access via WiFi CLI
Cons
  • Requires additional CAN Commander board (ESP32) and proper wiring
  • Limited to Flipper Zero platform; not a standalone PC tool
  • Learning curve for understanding CAN bus concepts and tool arguments
  • App version must match minimum ESP32 firmware version (v2.2+)

Best For

Automotive CAN bus reverse engineeringVehicle diagnostics and ECU communication analysisSecurity research on CAN networksEducational projects on CAN bus protocolsIn-field CAN traffic monitoring and injection

FAQ

What hardware is required to use CAN Commander?
CAN Commander requires a CAN Commander board (ESP32-based) connected to a Flipper Zero via GPIO, and CAN wires attached to the screw terminals.
How do I start reading CAN traffic quickly?
Navigate to Tools > Monitor Discovery > Read All Frames to start monitoring CAN frames. If traffic is too heavy, switch to a filtered view.
What profile formats does CAN Commander support?
The app supports .injprof (injection profiles) and .dbcprof (DBC profiles) formats.
How do I update the firmware on the CAN Commander board?
If a firmware update warning appears at startup, dismiss it and update the ESP32 firmware from https://www.cancommander.com. The app requires minimum ESP32 firmware v2.2.
Can I use CAN Commander without a Flipper Zero?
No, CAN Commander is designed specifically as a Flipper Zero app that communicates with the CAN Commander ESP32 board. It cannot run independently.