Security through (trivial no less) obscurity is no security at all as they say, so...
https://github.com/tomwimmenhove/subarufobrob
https://www.youtube.com/watch?v=ewMZCxi8l8A
As a side note, it seems from the video that the "rolling code" is 4 digits, so maybe the device could be used also for "brute-forcing" in a "reasonable" time even if you haven't recorded "last code".
Security through (trivial no less) obscurity is no security at all as they say, so...
https://github.com/tomwimmenhove/subarufobrob