flag22.md

Flag 22 Hint

Read handle 0x005d and it will tell you exactly what to hash.

A connection has two ends. The server can see the address you connected from, and that is what it wants an md5 of. Find your own adapter's address with hciconfig or bluetoothctl list, format it lowercase with colons, and md5 it.

Note that everyone's answer to this one is different.