CAN-BUS sniffing

Purpose

Hardware

• USB to CAN Adapter https://s.click.aliexpress.com/e/_ooTCYX7

Firmware

• https://canable.io/updater/ → SL CAN with FD support

Software

• https://www.savvycan.com (Linux, Win, macOS)

Connection config

Connection → Open Connection Window → Add New Device → LAWICEL/SLCAN Serial → cu.usbmodem*; 500k; 500k

VAG UDS IDs over the diagnostic BUS

Caption text

module	request ID	response ID
Engine 1	0x7E0	0x7E8
Transmission	0x7E1	0x7E9
Haldex	0x70F	0x779
Gateway	0x710	0x77A
ABS	0x713	0x77D
Dashboard	0x714	0x77E
SRS	0x715	0x77F
HVAC	0x746	0x7B0

For future reference...

• VAG sniffer with ifTtT-like integration: https://github.com/kostaszaf/can-gateway-sniffer
• PoC insertion of messages into cluster via BAP: https://www.drive2.ru/l/663539875273774343/
• DIY VirtualCockpit: https://habr.com/ru/articles/442184/
• CAN-BUS communication basics: https://theksmith.com/software/hack-vehicle-bus-cheap-easy-part-1/
• http://www.loopybunny.co.uk/CarPC/k_can.html (BMW E8x)
• https://forum.macchina.cc/t/some-vw-can-stuff-to-help-out-people-with-mk5-and-some-mk6-type-platform-vehicles/660
• https://forums.ross-tech.com/index.php?threads/18564/page-2
• https://avtoad.com.ua/en/base/uds-protocol-unified-diagnostic-services
• VAG UDS IDs: https://github.com/ConnorHowell/vag-uds-ids