Notes

A very simple and staticly configured web application to detect IMSI Catchers using measurement reports in a predefined scenario. There may currently be some staticly configured local IP-addresses. The project is currently written for localhost only.

The project is based on a proof-of-conecpt project by RangeNetworks: https://github.com/RangeNetworks/presentations

Requirements

• The proof of concept requires two instances of OpenBTS, one that acts as an IMSI Catcher and one that operates as a valid GSM base station receiving the neighbor measurement reports.
• The IMSI Catcher is configured with an ARFCN of 75 and bsic of 29.
• The valid BTS is configured with a ARFCN of 70 and bsic of 29.
• The two OpenBTS instances must be configured as neighbors.
• The web application must be run on the computer with the legitimate GSM base station

Setup

Enable publishing of API data:

OpenBTS> devconfig NodeManager.API.PhysicalStatus 0.1

Install Python Tornado:

$ sudo apt-get install python-pip
$ sudo pip install tornado

Start a quick webserver:

$ cd PhysicalStatusAPI

# Python 2.x:
$ python -m SimpleHTTPServer 8080

# Python 3.x:
$ python -m http.server 8080

Start the ZMQ <-> Websocket bridge:

$ python ./basic-websocket.py

Open the directory in a browser and choose a visualizer:

http://your-ip:8080