This is a series of articles about file formats and related security issues. In 2003 I had presented an article in French about this subject at the SSTIC conference: [SSTIC03]. In the following articles I will provide an updated version in English with more information about common file formats.
Voici une liste de tous les articles et présentations que j'ai publiés jusqu'ici dans le domaine de la sécurité informatique.
CherryProxy is a simple HTTP proxy written in Python 2.x, based on the CherryPy WSGI server and httplib, extensible for content analysis and filtering.
This article describes the PDF file format, related security issues and useful resources. [WORK IN PROGRESS]
If you want to test or use ExeFilter on Windows but you cannot or you do not want to install a Python interpreter, Portable ExeFilter is a simple solution. You just need to unzip it in any folder on a hard drive or a USB stick and it should run anywhere.
This is a presentation at the CanSecWest08 conference about ExeFilter, an open-source tool and framework to filter files and active content.
Origapy is a Python interface to Origami, a PDF parser written in Ruby. It provides access to pdfclean.rb, in order to sanitize PDF files by disabling all active content (javascript, launch actions, embedded files, etc). Because Origami is a full PDF parser, it is much more effective than PDFiD (when sanitizing/disarming PDF files), but also quite slower.
PDF files may be used to trigger malicious content, as described here. PDFiD is a Python tool to analyze and sanitize PDF files, written by Didier Stevens. Here is PDFiD_PL, a version that I have slightly modified so that it can be imported as a module in Python applications (originally for ExeFilter).
pyxmldsig is a Python module to create and verify XML Digital Signatures (XML-DSig). This is a simple interface to the PyXMLSec library, aiming to provide a more pythonic API suitable for Python applications.