Crocodile Hunter

Crocodile Hunter is a tool to hunt fake eNodeBs, also known commonly as hailstorm, stingray, cell site simulators, or IMSI catchers. It works by listening for broadcast messages from all of the 4G stations in the area, inferring their location, and looking for unusual activity.

This repository is part of an EFF project studying the newest generation (i.e. 4G/LTE) of Cell Site Simulators. We recommend you read our guide to IMSI Catchers: Gotta Catch 'Em All.

The main project is located in /src and is based off of srsLTE and our setup currently supports the USRP B200 and the bladeRF x40.

Project Setup (Docker)

Install docker and docker-compose.

Then, after cloning this project, cd to the src/srsLTE/ directory and initialize the git submodule:

git submodule init
git submodule update

Note: if afterwards during development you want to pull in changes from our srsLTE fork, run:

git submodule update --recursive

Additionally, you'll either need Wigle API credentials or you'll need to set the enable_wigle flag in watchdog.py to False. Note that the free API access only allows 10 GET queries per day.

You may also wish to get an Open Cell ID API key for GPS location and a backup cell database.

If you choose to enable Wigle and/or Open Cell ID access, you'll need to set the appropriate options in your config.ini file described below.

You may also wish to set up the API to sync data back to a central server. For information on that see the API section below.

You'll need to make a copy of /src/config.ini.example in /src named config.ini and update it with your credentials for wigle, opencellid, and mysql, and default gps coordinates to use for testing, (get them from google maps.) You can also set your default project, this is necessary for starting crocodile hunter automatically using the provided init.d script.

You will want to get wigle pro API keys or you will hit your request limit very quickly. You should be able to get those by emailing the wigle project and introducing yourself.

Once your config.ini file is ready, build the containers with:

docker-compose build

Running (docker)

Once the containers have been built, start everything with:

docker-compose up

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