Hijacking bluetooth headsets

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null Pune Chapter - November 2012 Meet

Transcript of Hijacking bluetooth headsets

By

Swaroop YermalkaR

1. Finding Visible & Invisible

Bluetooth Devices along with their

specifications

2. Cloning Bluetooth Devices

3. Remotely Inject audio in

Bluetooth headsets and record

audio from it.

BT5 r3 laptop Galaxy

pop

Nokia Bluetooth Headset

Bluetooth Dongle

79 channels 2.4-GHz ISM band

Devices hop across these channels at a rate of 1600 times per second

Bluetooth Device Address (BD_ADDR)

Source: www.techtree.com

Initial Setup

1. Everything is in visible

Android Settings Ubuntu Settings

#hcitool scan

#hcitool inq

Find a target First

btscanner

Bluemaho

2. Let’s Find the Invisible Devices…

Source: http://hwaddress.com/

Let’s Find the Invisible Devices…

Android Settings

Start sniffing

Sniff on

mon0

SAMSUNG

It is Samsung device

We have: 00:07:AB:ff:CF:88

~MAC address minus one

~ MAC address minus 1

~MAC address plus one

FOUND!!!

#hcitool inq <bd_addr>

Enumerate the services for further attack

Recall Previous

Information…

#bdaddr -i hci1 <new_bd_addr>

#hcitool scan

#hciconfig hci1 name “android”

#hciconfig hci0 class 0x58020c

Observe the Fields

Laptop

Why to Clone the bluetooth device?

In certain premises, some bluetooth type device may be

restricted. Does it still bother you?

For many attacks such as attacks on bluetooth headset it is

necessary to make our device headset compatible.

Is our bluetooth

dongle headset

compatible?

No? change its

class.

Device conforms to the Headset Profile

Find your victim

Download url:

http://trifinite.org/Downloads/carwhispe

rer-0.2.tar.gz

#./carwhisperer <interface> <injecting audio file> <Output

file> <victim BD_ADDR>

Built on AIRcable XR™ long-range

technology

1 km external antenna included

Extended range for up to 30 km***

No external power needed

Aluminum case for reduced interference

and increased sensitivity

Yi-Bing Lin

1. Bluetooth Hacking: The state of art by

trifinite.org

2. Bluetooth Wiki

www.chmag.in

Nov-2012Sep-2012Oct-2012

Feedback, questions and suggestions:

swaroop.wireless@gmail.com