zzuf – Multi-Purpose Application Input Fuzzing Tool

Outsmart Malicious Hackers


zzuf is a transparent application input fuzzing tool or fuzzer. Its purpose is to find bugs in applications by corrupting their user-contributed data (which more than often comes from untrusted sources on the Internet). It works by intercepting file and network operations and changing random bits in the program’s input.

zzuf’s behaviour is deterministic, making it easier to reproduce bugs.

zzuf - Multi-Purpose Application Input Fuzzing Tool

Its main areas of use are:

  • quality assurance: use zzuf to test existing software, or integrate it into your own software’s testsuite
  • security: very often, segmentation faults or memory corruption issues mean a potential security hole, zzuf helps exposing some of them
  • code coverage analysis: use zzuf to maximise code coverage

zzuf’s primary target is media players, image viewers and web browsers, because the data they process is inherently insecure, but it was also successfully used to find bugs in system utilities such as objdump.

zzuf is not rocket science: the idea of fuzzing input data is barely new, but zzuf’s main purpose is to make things easier and automated.

You can download zzuf here:

Mac OS X universal binary: zzuf-osx-0.13.tar.gz
Latest Source from Github: master.zip

Or read more here.

Posted in: Hacking Tools, Secure Coding

, ,


Latest Posts:


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.
MyEtherWallet DNS Hack Causes 17 Million USD User Loss MyEtherWallet DNS Hack Causes 17 Million USD User Loss
Big news in the crypto scene this week was that the MyEtherWallet DNS Hack that occured managed to collect about $17 Million USD worth of Ethereum in just a few hours.


Comments are closed.