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Consumer IoT devices manifest in a variety of forms today, including fitness trackers, rings, smart-watches, pacemakers, and so on. Most short range, low power consuming IoT devices use BLE (Bluetooth Low Energy) protocol to communicate with a master device. This communication link can contain very personal information about the user. Several vulnerabilities and security attacks exist for BLE (Eavesdropping, Man in the Middle Attacks, Denial of Service & Fuzzing Attack). However, most of them do not go down to the lower layers of the protocol (L2CAP, link layer, Physical layer). In my presentation I deep dive into the structure of BLE protocol, explore some of the open-source tools for BLE exploitation (gatttool, bettercap, Ubertooth etc.) and introduce you to the world of software defined radio – how you can use it to analyse and potentially malform packets in the lowest layers of the protocol.

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