FISSURE : Frequency Independent SDR-based Signal Understanding and Reverse Engineering


FISSURE is an open-source RF and reverse engineering framework designed for all skill levels with hooks for signal detection and classification, protocol discovery, attack execution, IQ manipulation, vulnerability analysis, automation, and AI/ML. The framework was built to promote the rapid integration of software modules, radios, protocols, signal data, scripts, flow graphs, reference material, and third-party tools. FISSURE is a workflow enabler that keeps software in one location and allows teams to effortlessly get up to speed while sharing the same proven baseline configuration for specific Linux distributions.

The framework and tools included with FISSURE are designed to detect the presence of RF energy, understand the characteristics of a signal, collect and analyze samples, develop transmit and/or injection techniques, and craft custom payloads or messages. FISSURE contains a growing library of protocol and signal information to assist in identification, packet crafting, and fuzzing. Online archive capabilities exist to download signal files and build playlists to simulate traffic and test systems.

The friendly Python codebase and user interface allows beginners to quickly learn about popular tools and techniques involving RF and reverse engineering. Educators in cybersecurity and engineering can take advantage of the built-in material or utilize the framework to demonstrate their own real-world applications. Developers and researchers can use FISSURE for their daily tasks or to expose their cutting-edge solutions to a wider audience. As awareness and usage of FISSURE grows in the community, so will the extent of its capabilities and the breadth of the technology it encompasses.

Getting Started


There are three branches within FISSURE to make file navigation easier and reduce code redundancy. The Python2_maint-3.7 branch contains a codebase built around Python2, PyQt4, and GNU Radio 3.7; the Python3_maint-3.8 branch is built around Python3, PyQt5, and GNU Radio 3.8; and the Python3_maint-3.10 branch is built around Python3, PyQt5, and GNU Radio 3.10.

Operating SystemFISSURE Branch
Ubuntu 18.04 (x64)Python2_maint-3.7
Ubuntu 18.04.5 (x64)Python2_maint-3.7
Ubuntu 18.04.6 (x64)Python2_maint-3.7
Ubuntu 20.04.1 (x64)Python3_maint-3.8
Ubuntu 20.04.4 (x64)Python3_maint-3.8
KDE neon 5.25 (x64)Python3_maint-3.8

In-Progress (beta)

These operating systems are still in beta status. They are under development and several features are known to be missing. Items in the installer might conflict with existing programs or fail to install until the status is removed.

Operating SystemFISSURE Branch
DragonOS Focal (x86_64)Python3_maint-3.8
Ubuntu 22.04 (x64)Python3_maint-3.10

Note: Certain software tools do not work for every OS. Refer to Software And Conflicts


git clone
git checkout or or
git submodule update –init

This will install PyQt software dependencies required to launch the installation GUIs if they are not found.

Next, select the option that best matches your operating system (should be detected automatically if your OS matches an option).

It is recommended to install FISSURE on a clean operating system to avoid existing conflicts. Select all the recommended checkboxes (Default button) to avoid errors while operating the various tools within FISSURE. There will be multiple prompts throughout the installation, mostly asking for elevated permissions and user names. If an item contains a “Verify” section at the end, the installer will run the command that follows and highlight the checkbox item green or red depending on if any errors are produced by the command. Checked items without a “Verify” section will remain black following the installation.


Open a terminal and enter:




  • Dashboard
  • Central Hub (HIPRFISR)
  • Target Signal Identification (TSI)
  • Protocol Discovery (PD)
  • Flow Graph & Script Executor (FGE)


The following is a list of “supported” hardware with varying levels of integration:

  • USRP: X300 series, B210, B205mini
  • HackRF
  • RTL2832U
  • 802.11 Adapters
  • LimeSDR
  • bladeRF
  • Open Sniffer
  • PlutoSDR


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