I described most of what I did in the quoted text, but this is what I can recall in steps:
- Install mitmproxy on my Macbook Pro
- Install the cert from their site on my iPhone
- “Trust” the cert (instructions are on their site)
- Configure a “manual” proxy on my iPhone for the Wifi connection to point to my Macbook Pro
- Launch the LM app on my phone and play around with it until I see a request to the ‘token’ endpoint
- Expand that request and the client_id and client_secret will be right there
What part are you having trouble with?