Aren’t the previous Bluetooth scanning tools scattered and in disrepair? So we have this powerful Bluetooth scanner based on modern Python 3 —- bluescan.
When hacking new Bluetooth targets, the scanner can help us to collect intelligence, such as:
- BR devices
- LE devices
- LMP features
- GATT services
- SDP services
- Vulnerabilities (demo)
This tool is based on BlueZ, the official Linux Bluetooth stack. The following packages need to be installed:
sudo apt install libglib2.0-dev libbluetooth-dev
When you play this tool in a Linux virtual machine, making a USB Bluetooth adapter exclusive to it is recommended, like the Ostran Bluetooth USB Adapter OST-105 CSR 8150 v4.0 for 99 RMB. Of course, the best one to use is the little bit expensive Parani UD100-G03, 560 RMB. And if you want to try the vulnerability scanning, see
README.md of ojasookert/CVE-2017-0785.
The lastest bluescan will be uploaded to PyPI, so the following command can install bluescan:
sudo pip3 install bluescan
$ bluescan -h bluescan v0.2.1 A powerful Bluetooth scanner. Author: Sourcell Xu from DBAPP Security HatLab. License: GPL-3.0 Usage: bluescan (-h | --help) bluescan (-v | --version) bluescan [-i <hcix>] -m br [--inquiry-len=<n>] bluescan [-i <hcix>] -m lmp BD_ADDR bluescan [-i <hcix>] -m sdp BD_ADDR bluescan [-i <hcix>] -m le [--timeout=<sec>] [--le-scan-type=<type>] [--sort=<key>] bluescan [-i <hcix>] -m gatt [--include-descriptor] --addr-type=<type> BD_ADDR bluescan [-i <hcix>] -m vuln --addr-type=br BD_ADDR Arguments: BD_ADDR Target Bluetooth device address Options: -h, --help Display this help. -v, --version Show the version. -i <hcix> HCI device for scan. [default: hci0] -m <mode> Scan mode, support BR, LE, LMP, SDP, GATT and vuln. --inquiry-len=<n> Inquiry_Length parameter of HCI_Inquiry command. [default: 8] --timeout=<sec> Duration of LE scan. [default: 10] --le-scan-type=<type> Active or passive scan for LE scan. [default: active] --sort=<key> Sort the discovered devices by key, only support RSSI now. [default: rssi] --include-descriptor Fetch descriptor information. --addr-type=<type> Public, random or BR.
Scan BR devices
Classic Bluetooth devices may use three technologies: BR (Basic Rate), EDR (Enhanced Data Rate), and AMP (Alternate MAC/PHY). Since they all belong to the Basic Rate system, so when scanning these devices we call them BR device scanning:
As shown above, through BR device scanning, we can get the address, page scan repetition mode, class of device, clock offset, RSSI, and the extended inquiry response (Name, TX power, and so on) of the surrounding classic Bluetooth devices.
Scan LE devices
Bluetooth technology, in addition to the Basic Rate system, is Low Energy (LE) system. When scanning Bluetooth low energy devices, it is called LE device scanning:
As shown above, through LE device scanning, we can get the address, address type, connection status, RSSI, and GAP data of the surrounding LE devices.
Scan SDP services
Classic Bluetooth devices tell the outside world about their open services through SDP. After SDP scanning, we can get service records of the specified classic Bluetooth device:
You can try to connect to these services for further hacking.
Scan LMP features
Detecting the LMP features of classic Bluetooth devices allows us to judge the underlying security features of the classic Bluetooth device:
Scan GATT services
LE devices tell the outside world about their open services through GATT. After GATT scanning, we can get the GATT service of the specified LE device. You can try to read and write these GATT data for further hacking:
Vulnerabilities scanning (demo)
Vulnerability scanning is still in the demo stage, and currently only supports CVE-2017-0785:
$ sudo bluescan -m vuln --addr-type=br ??:??:??:??:??:?? ... ... CVE-2017-0785
A powerful Bluetooth scanner for scanning BR/LE devices, LMP, SDP, GATT and vulnerabilities!
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