For Chamberlain brands [0] there is some research that shows that their rolling code system (Security+ and Security+ 2.0) is quite easy to decode/decrypt [1]. This feature is supported in the flipper firmware, but is restricted (you can't create a custom remote, only clone is supported) without custom firmware. However, I'm sure you could decode a raw capture file if needed in a pinch.

[0] https://chamberlaingroup.com/our-brands

[1] https://github.com/argilo/secplus