tuyadump (experimental)

Tool to dump communication with tuya devices

Warning

This tool has been developped while coding a GO API to control Tuya devices (Available here)[https://github.com/py60800/tuya].

Despite being the result of quick and dirty coding, I found it great for debugging tuya communication.

Thanks to Erik Montnemery (@emontnemery), tuyadump now supports 3.3 protocol. If you encounter any issue, you can try the previous version (branch master).

Prerequisites

Get the keys and ids of the tuya devices : https://github.com/codetheweb/tuyapi/blob/master/docs/SETUP.md

Acknowledgements

@codetheweb for reverse engineering tuya protocol

@google team for providing gopacket libraries

@emontnemery for providing clues and examples to support 3.3 protocol

and many others...

Get and build (Linux)

Install libpcap dev package (i.e. sudo apt install libpcap<version>dev)

Get gopacket library:

go get "github.com/google/gopacket"

Get this library

go get "github.com/py60800/tuyadump"

Build:

go build tuyadump.go comm-msg.go crypto.go dodump.godebug.go

Run

Create a config file with the keys and id collected from tuya device (check example config for format)

To view traffic in real time sudo ./tuyadump -C tuyaconfig.jsonport 6668

To view trafic collected with tcpdump: tuyadump -C tuyaconfig.json -r dump.pcap

-d option can be used to dump packets as hex data