November 9, 2018

766 words 4 mins read



Universal Radio Hacker: investigate wireless protocols like a boss

repo name jopohl/urh
repo link
language Python
size (curr.) 49517 kB
stars (curr.) 4777
created 2016-04-01
license GNU General Public License v3.0

Universal Radio Hacker Blackhat Arsenal 2017 Blackhat Arsenal 2018

Tests status Coverage PyPI version Packaging status Average time to resolve an issue Percentage of issues still open Slack

The Universal Radio Hacker (URH) is a software for investigating unknown wireless protocols. Features include

  • hardware interfaces for common Software Defined Radios
  • easy demodulation of signals
  • assigning participants to keep an overview of your data
  • customizable decodings to crack even sophisticated encodings like CC1101 data whitening
  • assign labels to reveal the logic of the protocol
  • automatic reverse engineering of protocol fields
  • fuzzing component to find security leaks
  • modulation support to send the data back to the target
  • simulation environment to perform stateful attacks

Getting started

In order to get started

If URH is useful for you, please consider giving this repository a :star: or make donation via PayPal. We appreciate your support!

Want to stay in touch? :speech_balloon: Join our Slack channel!

Citing URH

We encourage researchers who work with URH to cite this WOOT'18 paper or directly use the following BibTeX entry.

@inproceedings {220562,
author = {Johannes Pohl and Andreas Noack},
title = {Universal Radio Hacker: A Suite for Analyzing and Attacking Stateful Wireless Protocols},
booktitle = {12th {USENIX} Workshop on Offensive Technologies ({WOOT} 18)},
year = {2018},
address = {Baltimore, MD},
url = {},
publisher = {{USENIX} Association},


Universal Radio Hacker can be installed via pip or using the package manager of your distribution (if included). Below you find more specific installation instructions for:


On Windows, URH can be installed with its Installer. No further dependencies are required.

If you get an error about missing api-ms-win-crt-runtime-l1-1-0.dll, run Windows Update or directly install KB2999226.


Install via Package Manager

URH is included in the repositories of many linux distributions such as Arch Linux, Gentoo, Fedora, openSUSE or NixOS. There is also a package for FreeBSD. If available, simply use your package manager to install URH.

Generic Installation with pip (Ubuntu/Debian)

URH is available on PyPi so you can install it with pip . For Ubuntu/Debian use the following commands to install URH including extensions for native SDR support.

sudo apt update
sudo apt install python3-numpy python3-psutil python3-zmq python3-pyqt5 g++ libpython3-dev python3-pip cython3
# Install following packages for native support of corresponding SDR (before installing URH)
sudo apt install libhackrf-dev liblimesuite-dev libbladerf-dev librtlsdr-dev libairspy-dev libuhd-dev libiio-dev
sudo pip3 install urh

Docker Image

The official URH docker image is available here.


Using DMG

It is recommended to use at least macOS 10.14 when using the DMG available here.

With pip

  1. Install Python 3 for Mac OS X. If you experience issues with preinstalled Python, make sure you update to a recent version using the given link.
  2. (Optional) Install desired native libs e.g. brew install librtlsdr for corresponding native device support.
  3. In a terminal, type: pip3 install urh.
  4. Type urh in a terminal to get it started.

Update your installation

If you installed URH via pip you can keep it up to date with pip3 install --upgrade urh, or, if this should not work python3 -m pip install --upgrade urh.

Running from source

If you like to live on bleeding edge, you can run URH from source.

Without installation

To execute the Universal Radio Hacker without installation, just run:

git clone
cd urh/src/urh

Note, before first usage the C++ extensions will be built.

Installing from source

To install from source you need to have python-setuptools installed. You can get it e.g. with pip install setuptools. Once the setuptools are installed use:

git clone
cd urh
python install

And start the application by typing urh in a terminal.


Hacking stuff with URH

General presentations and tutorials on URH

External decodings

See wiki for a list of external decodings provided by our community! Thanks for that!


Get the data out of raw signals

Interpretation phase

Keep an overview even on complex protocols

Analysis phase

Record and send signals


comments powered by Disqus