DEDSEC CATCHER is python web based tool which use for capturing imsi numbers and sms and also you able to see sms and imsi on any device using your favorite browser and it's make easy to capture sms and imsi numbers for those who not have much knowledge about gsm packets capturing.

Disclaimer:-

This program was made to understand how GSM network works. Not for bad hacking ! We are not responsible for any illegal activity !

Setup

Install DEDSEC CATCHER :

git clone https://github.com/0xbitx/dedsec_catcher.git
pip3 install pyshark flask flask_socketio sqlite3

Install Gr GSM : ( For receiving GSM transmissions )

sudo add-apt-repository -y ppa:ptrkrysik/gr-gsm
sudo apt update
sudo apt install gr-gsm

If gr-gsm failled to setup. Than follow those this : https://github.com/ptrkrysik/gr-gsm/wiki/Installation

Install Kalibrate : ( For finding frequencies )

apt-get install kalibrate-rtl

sudo apt install build-essential libtool automake autoconf librtlsdr-dev libfftw3-dev
git clone https://github.com/steve-m/kalibrate-rtl
cd kalibrate-rtl
./bootstrap && CXXFLAGS='-W -Wall -O3'
./configure
make
sudo make install

Usage

You need gsm frequency on which you capture sms or imsi. By using kalibrate you will get all your near gsm base stations frequencies.

kal -s GSM900

kal: Scanning for GSM-900 base stations.
GSM-900:
	chan: 4 (935.8MHz + 320Hz)	power: 1829406.95
	chan: 11 (937.2MHz + 308Hz)	power: 4540354.88
...

Now you need to capture gsm traffic using gr-gsm on frequency of your any gsm base station which you get from kalibrate.

grgsm_livemon -f <your_frequency>M

Example :

grgsm_livemon -f 935.8M

if you see output that's mean you getting gsm packets than continue other setps else change frequency.

2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
...

Now every thing is ready you can start now capturing sms or imsi numbers using dedsec. You able to run imsi catcher and sms sniffer both at same time using 2 seprate terminal for capture imsi numbers and sms both at same time.

cd <your dedsec_catcher folder> #Example cd dedsec_catcher

Usage :

Run this command to quick start dedsec catcher.

python3 dedsec.py

Options :

python3 dedsec.py -h
Usage: dedsec.py: [options]

Options:
  -h, --help            show this help message and exit
  -i IFACE, --iface=IFACE Interface (default : lo)
  -p PORT, --port=PORT  Port (default : 80)
  --host=HOST           Host (default : localhost)

For change host port.

python3 dedsec.py -p 8080

For change hostname.

python3 dedsec.py --host=localhost

Open localhost or 127.0.0.1 in your favorite browser and use now.

Requirements

linux operating system (kali linux) rtl-sdr (RTL2832U) with antenna

rtl-sdr device available on lazada:

name of product: RTL-SDR Blog RTL SDR V3 R820T2 RTL2832U 1PPM TCXO SMA RTLSDR Software Receiver Defined Radio

Links

Frequency : https://www.worldtimezone.com/gsm.html or https://en.wikipedia.org/wiki/GSM_frequency_bands
Sdr : https://en.wikipedia.org/wiki/Software-defined_radio
Sms : https://en.wikipedia.org/wiki/SMS#GSM
Imsi : https://fr.wikipedia.org/wiki/International_Mobile_Subscriber_Identity
Cell id : https://en.wikipedia.org/wiki/Cell_ID or https://unwiredlabs.com/
GSM : https://en.wikipedia.org/wiki/GSM
Frequency Calculator : https://www.cellmapper.net/arfcn
GR-GSM : https://github.com/ptrkrysik/gr-gsm

this project is currently not maintained.