Fusil Fuzzer 0.7 – Fuzzing Functions in Python

Outsmart Malicious Hackers


Fusil is a fuzzing framework written in Python and distributed under GNU GPLv2 license. Fusil allows you to easily write “Fuzzing Projects” from a set of functions such as:

  • Create a process
  • Compile a C program
  • Watch a process
  • Watch syslog and so on

Fusil uses small “agents” which exchange messages to launch actions. e.g. MangleFile injects errors into valid file (PDF file, AVI movie, JPEG picture etc.). And then Fusil uses generated filename to run a process.

Currently available projects are ClamAV, Firefox (contains an HTTP server), gettext, gstreamer, identify, libc_env, libc_printf, libexif, linux_syscall, mplayer, php, poppler, vim and xterm.

For fuzzing safety, Fusil limits process memory, process priority, only copies a few environment variables, creates a temporary directory used as working directory, etc.

You can download Fusil 0.7 here:

fusil-0.7.tar.gz (INSTALL doc)

Or read more here.

Posted in: Exploits/Vulnerabilities, Hacking Tools, Secure Coding

, ,


Latest Posts:


snallygaster - Scan For Secret Files On HTTP Servers snallygaster – Scan For Secret Files On HTTP Servers
snallygaster is a Python-based tool that can help you to scan for secret files on HTTP servers, files that are accessible that shouldn't be public and can pose a s
Portspoof - Spoof All Ports Open & Emulate Valid Services Portspoof – Spoof All Ports Open & Emulate Valid Services
The primary goal of the Portspoof program is to enhance your system security through a set of new camouflage techniques which spoof all ports open and also emulate valid services on every port.
Cambridge Analytica Facebook Data Scandal Cambridge Analytica Facebook Data Scandal
One of the biggest stories of the year so far has been the scandal surrounding Cambridge Analytica that came out after a Channel 4 expose that demonstrated the depths they are willing to go to profile voters, manipulate elections and much more.
GetAltName - Discover Sub-Domains From SSL Certificates GetAltName – Discover Sub-Domains From SSL Certificates
GetAltName it's a little script to discover sub-domains that can extract Subject Alt Names for SSL Certificates directly from HTTPS websites which can provide you with DNS names or virtual servers.
Memcrashed - Memcached DDoS Exploit Tool Memcrashed – Memcached DDoS Exploit Tool
Memcrashed is a Memcached DDoS exploit tool written in Python that allows you to send forged UDP packets to a list of Memcached servers obtained from Shodan.
QualysGuard - Vulnerability Management Tool QualysGuard – Vulnerability Management Tool
QualysGuard is a web-based vulnerability management tool provided by Qualys, Inc, which was the first company to deliver vulnerability management services as a SaaS-based web-service.


One Response to Fusil Fuzzer 0.7 – Fuzzing Functions in Python

  1. James C March 11, 2008 at 5:52 pm #

    I’ll give it a go. I currently use SPIKE. Hope fusil requires less initial setup and planing.