Misc - Man in the middle¶
First by simply reading the data we can see the textual header teling us that this is a btsnoop file. That can be analysed using btmon or Wireshark. While the prior can give some statistical information, we need to use Wireshark.
Now the hard part is to figure out what are the packets sayng. We try to decode them using different bluetoth device profiles and look closely if there is a mathch. It matches on a MOUSE and KEYBOARD. The packets are mouse movements and key events (shorter packets). The longer packets are the keyboardevents.
If we mimic the keyboard (key presses, shift presses, etc), we get the flag.