Tutorial for Fuzzled – Writing a Fuzzer with the Fuzzled Framework

Use Netsparker


If you remember we mentioned Fuzzled a little while back, the PERL fuzzing framework. Apparently Fuzzled 1.1 should be coming out soon.

Fuzzled is a powerful fuzzing framework. Fuzzled includes helper functions, namespaces, factories which allow a wide variety of fuzzing tools to be developed. Fuzzled comes with several example protocols and drivers for them.

Someone was kind enough to write a short paper on how to use fuzzled to write a simple fuzzer. The paper includes some techniques used to dismantle protocols including documentation, observation and static analysis.

To quote the author:

The paper includes some of the techniques I use to dismantle protocols including documentation, observation and static analysis. It then moves on to the fundamentals of implementing a protocol using the framework. I talk about base requests, namespaces and tieing them together with factories with reference to Fuzzled::Protocol::HTTP, an example included in the framework. The paper also highlights a few tricks to the framework, including developing multi-threaded fuzzers, identifying offsets and parsing packets. It ends with my techniques to identify vulnerabilities highlighted by fuzzers.

You can download the paper here:

WAFUTFF [PDF]

Posted in: Hacking Tools, Secure Coding

, , , , ,


Latest Posts:


Acunetix v12 - Pause & Resume Acunetix v12 – More Comprehensive More Accurate & 2x Faster
Acunetix, the pioneer in automated web application security software, has announced the release of Acunetix v12 - more comprehensive, accurate & 2x faster.
CloudFrunt - Identify Misconfigured CloudFront Domains CloudFrunt – Identify Misconfigured CloudFront Domains
CloudFrunt is a Python-based tool for identifying misconfigured CloudFront domains, it uses DNS and looks for CNAMEs which may be allowed to be associated with CloudFront distributions.
Airbash - Fully Automated WPA PSK Handshake Capture Script Airbash – Fully Automated WPA PSK Handshake Capture Script
Airbash is a POSIX-compliant, fully automated WPA PSK handshake capture script aimed at penetration testing, it is compatible with Bash and Android Shell.
XXEinjector - Automatic XXE Injection Tool For Exploitation XXEinjector – Automatic XXE Injection Tool For Exploitation
XXEinjector is an XXE Injection Tool that automates retrieving files using direct and out of band methods. Directory listing only works in Java applications.
Yahoo! Fined 35 Million USD For Late Disclosure Of Hack Yahoo! Fined 35 Million USD For Late Disclosure Of Hack
Ah Yahoo! in trouble again, this time the news is Yahoo! fined for 35 million USD by the SEC for the 2 year delayed disclosure of the massive hack, we actually reported on the incident in 2016 when it became public.
Drupwn - Drupal Enumeration Tool & Security Scanner Drupwn – Drupal Enumeration Tool & Security Scanner
Drupwn is a Python-based Drupal Enumeration Tool that also includes an exploit mode, which can check for and exploit relevant CVEs.


4 Responses to Tutorial for Fuzzled – Writing a Fuzzer with the Fuzzled Framework

  1. dirty November 6, 2007 at 6:14 pm #

    does anyone know when fuzzled 1.1 is coming out

  2. Darknet November 7, 2007 at 6:19 am #

    dirty: They are just polishing it off right now, you can request a pre-release if you are interested from the author. If not it should be fairly soon (within November I’d guess).

  3. dirty November 7, 2007 at 9:01 pm #

    darknet
    Thanks!! sounds good

  4. Tim Brown November 15, 2007 at 12:53 am #

    Fuzzled 1.1 is now out at http://www.nth-dimension.org.uk/downloads.php?id=15. I’m actually already working on the 2.x branch. Whilst 1.x fuzzers will still work under 2.x, my current focus has been abstracting the producer/consumer model and shared memory management used by Fuzzled. The upshot is that the protocol modules themselves are much, much cleaner.