tl;dr

• Enumerated BLE GATT services and characteristics
• Explored BLE pairing and authentication
• Used MAC spoofing and brute forcing
• Analyzed advertisements and notifications
• Analyzed a BLE PCAP in Wireshark

Write-Up for the “…—…” challenge from InCTF Internationals 2019

tl;dr

1. Alert signals encoded in morse transfered to the Mi-Band
2. Traverse through the packets and find the appropriate BLE handles of the encoded message
3. Decode the morse encoded message