(Please take a quick look at screenshot below then continue reading).
This application will show all nearby devices broadcasting over Bluetooth Low Energy (BLE or BTLE). The Appearance ID of 0xDC19 was used by Defcon 25 attendees that wanted their devices to be found; this application only accepts broadcasts with the 0xDC19 Appearance ID.
The output shown on your screen has two sections separated by BLE Manufacturer Name. The green section shows members of your group (this is configured in the US variable of scan.py). The default value is 0x5050 which is manufacturer name for DC Zia at Defcon. The blue/cyan section is for all other manufacturer names at Defcon 25 and also shows the manufacturer name (e.g. 0x9e04)
Each data capture from the polling sequences will be logged out. The output has a format like:
2017-07-29 11:58:09.921733
PWNDC801 9e04 -81dB
HACKED 9e04 -79dB
F|5HT4P3 9e04 -74dB
DCZBitrunnr 5050 -67dB
Obviously, first line of output is the date of the data capture. Following the date will be a line for each unique received broadcast. The nName of the device, manufacturer name, and signal strength (in decibels) will be logged out.
# git clone https://github.com/dczia/dc25-ble-scanner.git
# cd dc25-ble-scanner
# virtualenv-3 v
# source v/bin/activate
# pip install -r requirements.txt
# sudo ./scan.py
This except can mean a few different things:
- Run
scan.pyas root. - Use
setcapto enable privilge without always using root user:
sudo setcap 'cap_net_raw,cap_net_admin+eip' v/lib/python2.7/site-packages/bluepy/bluepy-helper
- Ensure your BLE device is plugged in. Confirm this by running the command below. You should see at least one device in Devices list.
# hcitool devices
Devices:
hci0 00:1A:7D:DA:71:10