The #NSA with the help of #philips #backdoored (again!) a european military messaging #device in the 80ies, a few years ago the fine people of the #cryptomuseum published everything they knew about it - including a #firmware dump:
https://www.cryptomuseum.com/crypto/philips/ua8295/

back then i #reverseEngineered this, and last week finally cleaned it up, and publish it today:

https://rad.ctrlc.hu/nodes/rad.ctrlc.hu/rad:z46AkAERuXAzqZcDRKvE7byRbkga1

also on the bad site: https://github.com/stef/UA-8295-NSA

update: it's a thread: 1/n