Grepmarx - Application Security Platform

Grepmarx is a web application providing a single platform to quickly understand, analyze and identify vulnerabilities in possibly large and unknown code bases.

Features

SAST (Static Analysis Security Testing) capabilities:

• Multiple languages support: C/C++, C#, Go, HTML, Java, Kotlin, JavaScript, TypeScript, OCaml, PHP, Python, Ruby, Bash, Rust, Scala, Solidity, Terraform, Swift
• Multiple frameworks support: Spring, Laravel, Symfony, Django, Flask, Node.js, jQuery, Express, Angular...
• 1600+ existing analysis rules
• Easily extend analysis rules using Semgrep syntax: https://semgrep.dev/editor
• Manage rules in rule packs to tailor code scanning

SCA (Software Composition Analysis) capabilities:

• Multiple package-dependency formats support: NPM, Maven, Gradle, Composer, pip, Gopkg, Gem, Cargo, NuPkg, CSProj, PubSpec, Cabal, Mix, Conan, Clojure, Docker, GitHub Actions, Jenkins HPI, Kubernetes
• SBOM (Software Bill-of-Materials) generation (CycloneDX compliant)

Extra

• Analysis workbench designed to efficiently browse scan results
• Scan code that doesn't compile
• Comprehensive LOC (Lines of Code) counter
• Inspector: automatic application features discovery
• ... and a Dark Mode

Screenshots

Scan customization	Analysis workbench	Rule pack edition

Execution

Grepmarx is provided with a configuration to be executed in Docker and Gunicorn.

Docker execution

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Make sure you have docker-composer installed on the system, and the docker daemon is running. The application can then be easily executed in a docker container. The steps:

Get the code

$ git clone https://github.com/Orange-Cyberdefense/grepmarx.git
$ cd grepmarx

Start the app in Docker

$ sudo docker-compose pull && sudo docker-compose build && sudo docker-compose up -d

Visit http://localhost:5000 in your browser. The app should be up & running.

Gunicorn

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Gunicorn 'Green Unicorn' is a Python WSGI HTTP Server for UNIX. A supervisor configuration file is provided to start it along with the required Celery worker (used for security scans queuing).

Install using pip

$ pip install gunicorn supervisor

Start the app using gunicorn binary

$ supervisord -c supervisord.conf

Visit http://localhost:8001 in your browser. The app should be up & running.

Add rule repositories

In order to run a scan you will need to manually add at least one entry in Administration/Repository. Here are a few examples of Semgrep rule repositories which can be used:

• https://github.com/semgrep/semgrep-rules: the standard library for Semgrep rules
• https://github.com/trailofbits/semgrep-rules: Semgrep rules developed by Trail of Bits
• https://github.com/Decurity/semgrep-smart-contracts: Semgrep rules that look for patterns of vulnerabilities in smart contracts
• https://github.com/0xdea/semgrep-rules: Semgrep rules by 0xdea
• https://github.com/mindedsecurity/semgrep-rules-android-security: Semgrep rules derived from the OWASP MASTG specifically for Android applications
• https://github.com/akabe1/akabe1-semgrep-rules: collection of akabe1's custom Semgrep rules
• https://github.com/s0rcy/semgrep-rules: Collection of s0rcy's personal Semgrep rules for security analysis and research

Make sure you agree & comply with the LICENSE file of the rules repositories you use!

At this stage, all you have to do is create Rules Packs according to your needs and then launch your scans.

Build from sources

Get the code

$ git clone https://github.com/Orange-Cyberdefense/grepmarx.git
$ cd grepmarx

Install virtualenv modules

$ virtualenv env
$ source env/bin/activate

Install Python modules

$ # SQLite Database (Development)
$ pip3 install -r requirements.txt
$ # OR with PostgreSQL connector (Production)
$ # pip install -r requirements-pgsql.txt

Install additionnal requirements

# Dependency scan requirements (cdxgen)
$ sudo apt install -y npm openjdk-17-jdk maven gradle golang composer
$ sudo npm install -g @cyclonedx/cdxgen
# Application Inspector dependencies
$ sudo apt install -y dotnet-runtime-8.0

Make sure nodejs version is >= 20.X, otherwise cdxgen will fail.

A Redis server is required to queue security scans. Install the redis package with your favorite distro package manager, then:

$ redis-server

Set the FLASK_APP environment variable

$ export FLASK_APP=run.py
$ # Set up the DEBUG environment
$ # export FLASK_ENV=development

Start the celery worker process

$ celery -A app.celery_worker.celery worker --pool=prefork --loglevel=info --detach

Start the application (development mode)

$ # --host=0.0.0.0 - expose the app on all network interfaces (default 127.0.0.1)
$ # --port=5000    - specify the app port (default 5000)  
$ flask run --host=0.0.0.0 --port=5000

Access grepmarx in browser: http://127.0.0.1:5000/

Credits & Links

• The web application dashboard is based on AdminLTE Flask
• SAST code scanning is powered by the semgrep engine
• SBOM generation is done with the great CycloneDX cdxgen, and SCA is performed using the awesome OWASP dep-scan
• LOC counting is handled by scc
• Features discovery is done using Application Inspector

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Grepmarx - Provided by Orange Cyberdefense.