You can either exploit predefined services by Bluetooth SIG, or you can exploit vendor defined services. Thus, you should always exploit vendor defined services. Now the next question is — how to identify vendor services and predefined services?

I hope it is crystal clear to identify vendor specific and SIG specific characteristics. The bulb is a smart bulb by Reos. Sample picture of the bulb and mobile application are shown below —. Now I will interact with the bulb using the Android application over Bluetooth. At the same time — all the interaction between the bulb and mobile phone is getting recorded and saved in the mobile automatically.

Testers target interior LED light bulbs for cabin reading lamps.

The first step is to connect to the bulb. For this, mobile should have Bluetooth enabled, and then we connect our mobile to the Bulb through the mobile application as shown below —. As of now, we have changed the color of the bulb, and I have captured and transferred the Bluetooth packet to my computer. There were around packets.

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Analyzing all of them was not at all an easy task. I was looking for a particular packet which was writing data to the bulb. By data, I mean changing the color of the bulb in our case. I just googled their functionality and what I came to know is — only ATT protocol is used for writing data to the bulb while the remaining two protocols are used as Host Controller Interface HCI.

In the above diagram, I have highlighted few things. Starting from the top — First highlighted part is the write command from localhost mobile to remote bulb. If we read the Info column — we see something called handle and the value for the handle is 0xb. It means something was written on the handle 0xb by the mobile application.

Testers target interior LED light bulbs for cabin reading lamps.

In the above section, we have used mobile application for changing the color of the bulb. Thus, we can say for changing the color of the bulb we refer to handle 0xb. What we understand is — the value 0f0d03…… was used on the handle 0xb for changing the color of the bulb. For replaying the packet, we can use various tools, but we will be using Bluetooth CSR as discussed above. Also, we need handle value for changing the color which is 0xb as shown above. As seen above, we just have to specify the handle, i. Your email address will not be published.

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It can be checked using hciconfig command as shown below — Above is the result obtained when CSR is not connected to the laptop. Next Step — Connecting to the Bulb Whenever you want to connect to any device over Bluetooth, we first turn on the Bluetooth of our device. The screenshot for the same is shown below — If you have a look at the above screenshot, in the second line I have written connect for connecting to the bulb. Similarly, we can determine other services and their characteristics being used by the bulb.

Thus, you should always exploit vendor defined services Now the next question is — how to identify vendor services and predefined services?

About the Bulb — The bulb is a smart bulb by Reos. Sample picture of the bulb and mobile application are shown below — Now I will interact with the bulb using the Android application over Bluetooth.

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Now I am changing the color of the bulb. Sample pictures for the same are shown below — Ethical Hacking Training — Resources InfoSec This was just a small overview of the bulb and mobile application interaction. Small Network Equipment. Uninterruptible Power Supplies. Digital Media Player. Set-top Boxes. Signage Displays. Slates and Tablets. Central Air Conditioner. Commercial Boilers. Geothermal Heat Pumps. Room Air Conditioner. Smart Thermostats. Ventilation Fans. Lighting Ceiling Fans.

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