Get yaml file without esp in dashboard

If I install the .bin file on the esp32 through the browser, how do I make the yaml file appear on the home assistant’s esphome dashboard? I managed to solve it because I had the bin file and the yaml file. But if I only have the bin, how can I do it?

You can’t - the yaml is not encoded anywhere in the bin nor can it be reverse engineered.

If someone has provided you with a pre-configured ESPHome device - or a pre-compiled .bin file, you can adopt the device and import the yaml assuming they have set up a corresponding GitHub page: