Pyrrha: A mapper collection for firmware analysis

Pyrrha is a firmware cartography tool which provide three level of details:

• an overview of the import/export relationships between executables;
• a firmware-wide callgraph;
• a complete map of a given decompiled binary.

It uses the open-source code source explorer NumbatUI to provide users with an easy way to navigate through and search for path to function.

An example of the symbols and libraries imported by libgcc_s.so.1 and of the symbols which reference this library.

An example of the symlinks which point on busybox.

Installation

The installation is done in two parts:

1. Install Pyrrha itself.
2. Install NumbatUI (or Sourcetrail) to be able to visualize Pyrrha's results.
3. (Optional) Install Ghidra or IDA if you want to use fs-cg or decomp mappers.

Usage

The usage workflow is composed of two steps which allow you to separate DB creation and result visualization.

1. Run Pyrrha to obtain NumbatUI compatible files (*.srctrlprj for the project file and *.srctrldb for the DB file). With the python package, you can just launch the command pyrrha.
2. Visualize your results with Sourcetrail/NumbatUI.

Publications

Pyrrha presentations, including live demos:

• Pyrrha & Friends: Diving into Firmware Cartography, Eloïse Brocas & Robin David, SSTIC, Rennes, France, 2025. [slides] [video]

• Pyrrha: navigate easily into your system binaries, Eloïse Brocas, Hack.lu, Luxembourg, 2023. [slides] [video]

• Map your Firmware!, Eloïse Brocas, Pass The SALT, Lille, France, 2023. [slides] [video]

Theory behind implementations

• Streamlining Firmware Analysis with Inter-Image Call Graphs and Decompilation, Robin David, RE//verse.io, USA, 2025. [slides] [video]

Authors

• Eloïse Brocas (@ebrocas), Quarkslab
• Robin David (@RobinDavid), Quarkslab

Past Contributors

• Pascal Wu (@pwu42), during his internship at Quarkslab