Instructables
Picture of Telephony, DECT Sniffing with Dedected.
DISCLAMER:  Recording phone conversation without consent from the users is illegal in the US and most country's However, this tutorial is meant to be tested on your OWN equipment.  Be smart and only record your DECT's not your neighbors. 
 
Remove these adsRemove these ads by Signing Up

Step 1: 1: What is DECT?

Picture of 1: What is DECT?
http://en.wikipedia.org/wiki/Digital_Enhanced_Cordless_Telecommunications
usually known by the acronym DECT, is a digital communication standard, which is primarily used for creating cordless phone systems. It originated in Europe, where it is the universal standard, replacing earlier cordless phone standards, such as 900 MHz CT1 and CT2.[1]

Step 2: 1.1: Insecurity...

Picture of 1.1: Insecurity...
cardzs.jpg
DECTshift.jpg
most telecomunication companys don't implement or offer encryption for their devices so they can be easily sniffed.

The following has been tested under these circumstances:
-  Backtrack 5 final x86 KDE with Kernel 2.6.38
- Original Dosh&Amand Type II PCMCIA Card
- SIEMENS C1 DECT phones set up in repeater mode

Step 3: 2: Installing Dedected

Picture of 2: Installing Dedected
When installing Dedected on Backtrack 5 you have the following options:
-Use Dedected from the Backtrack repositorys
-Compile it on your own if you want to experiment

Install from source
root@bt:~# prepare-kernel-sources
root@bt:~# cd /usr/src/linux
root@bt:~# cp -rf include/generated/* include/linux/
root@bt:~# cd /pentest/telephony
root@bt:~# svn co https://dedected.org/svn/trunk dedected_svn
root@bt:~# cd dedected_svn/com-on-air_cs-linux/
root@bt:~# make && make -C tools


Install from repository 

root@bt:~# apt-get update
root@bt:~# apt-get install dedected

It is recommended that you have the tool Audacity if you are serious about recording phone conversations

Load the Drivers
root@bt:~# cd /pentest/telephony/dedected/com-on-air_cs-linux
root@bt:~# make node
root@bt:~# make load


Step 4: Scan for fixed parts or fp(DECT base stations)

Picture of Scan for fixed parts or fp(DECT base stations)
root@bt:~# cd /pentest/telephony/dedected/com-on-air_cs-linux/tools
root@bt:~# ./dect_cli

If you need info on the usage type "help". If you live in the U.S. switch to the US/DECT 6 band via the "band" command. Let's enable some verbosity:
verb
Now start scanning fpscan After scanning multiple times disable verbosity and stop scanning
verb stop

zebuilin (author) 3 years ago
wow... the picture repeated i've got to fix this.