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Nice writeup! It reminded me of trying to reverse engineer some lights I have, only to discover they’re encrypted. One is an amaran 60d and then the rest are a
by dceddia 3y ago
Nice writeup! It reminded me of trying to reverse engineer some lights I have, only to discover they’re encrypted. One is an amaran 60d and then the rest are a handful of SmallRig RM75 battery LED lights, and I wanted to make a script to turn them all on/off instead of fiddling with 2 separate apps.
I spent a bunch of time trying to reverse engineer the apps and the protocol, and it turns out both of these lights seem to use the same negotiation process but use different libraries to do it. I tried to mimic the Diffie-Hellman key exchange process they do on connection, and then kinda gave up. IIRC there was another step or 2 after that, one where it sent a random-looking number (another key? After sending the first key??) and I couldn’t figure out what it wanted there.
Your writeup makes me think I should just go try that hardcoded key and see if it works…
- davidacoder 3y agoOh, I would so love to see you succeed with the Amaran lights, which presumably would lead to all of the Aputure stuff being reverse engineered? I think if there was an open-source integration for them with say the Elgato Stream Deck or Home Assistant, it would be a major, major success story. For all those YouTube folks that do talking head at their desk this would be sooo much better than controlling them via an app on the phone.