Bluetooth Unknown file

root-me challenge Bluetooth - Unknown file: Your friend working at NSA recovered an unreadable file from a hacker’s computer. The only thing he knows is that it comes from a communication between a computer and a phone.

The answer is the SHA-1 hash of the concatenation of the MAC address (uppercase) and the name of the phone.

Example:

AB:CD:EF:12:34:56myPhone -> 023cc433c380c2618ed961000a681f1d4c44f8f1

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1. wget the bin from root-me

2. file ch18.bin

3. strings ch18.bin

4. hcidump -r ch18.bin

5. Extract MAC address and phone name, concat

6. Hash it