fzem – MUA (Mail User Agent) / Mail Client Fuzzer

The New Acunetix V12 Engine


fzem is a MUA (mail user agent) fuzzer that fuzzes MAIL/MIME email headers as well as how clients handle SMTP, POP and IMAP responses.

Purpose

fzem’s purpose is to fuzz MUAs as they process email content and handle server reponses.

How does it work?

fzem has the three main mail protocols implemented as well as mail/mime headers. Using these we can manipulate emails and responses to include fuzzing data from our fuzzing oracle or from the user.

A user can command fzem to run in various modes and perform differently in those modes.

  • Fuzz SMTP OK responses
  • Fuzz SMTP ERROR responses
  • Fuzz SMTP using custom fuzz data
  • Fuzz MAIL/MIME headers
  • Fuzz MAIL/MIME headers using custom fuzz data
  • Fuzz MAIL/MIME headers using custom headers
  • Fuzz POP3 OK responses
  • Fuzz POP3 ERROR responses
  • Fuzz POP3 using custom fuzz data
  • Fuzz IMAP4 OK responses
  • Fuzz IMAP4 ERROR responses
  • Fuzz IMAP4 using custom fuzz data

We can also choose a specific port to listen on (-P) and take advantage of the useful debug option (-D).

You can download fzem here:

fzem.tar.gz

Or read more here.

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

,


Latest Posts:


Malcom - Malware Communication Analyzer Malcom – Malware Communication Analyzer
Malcom is a Malware Communication Analyzer designed to analyze a system's network communication using graphical representations of network traffic.
WepAttack - WLAN 802.11 WEP Key Hacking Tool WepAttack – WLAN 802.11 WEP Key Hacking Tool
WepAttack is a WLAN open source Linux WEP key hacking tool for breaking 802.11 WEP keys using a wordlist based dictionary attack.
Eraser - Windows Secure Erase Hard Drive Wiper Eraser – Windows Secure Erase Hard Drive Wiper
Eraser is a hard drive wiper for Windows which allows you to run a secure erase and completely remove sensitive data from your hard drive by overwriting it several times with carefully selected patterns.
Insecure software versions are a problem Web Security Stats Show XSS & Outdated Software Are Major Problems
Netsparker just published some anonymized Web Security Stats about the security vulnerabilities their online solution identified on their users’ web applications and web services during the last 3 years.
CTFR - Abuse Certificate Transparency Logs For HTTPS Subdomains CTFR – Abuse Certificate Transparency Logs For HTTPS Subdomains
CTFR is a Python-based tool to Abuse Certificate Transparency Logs to get subdomains from a HTTPS website in a few seconds.
testssl.sh - Test SSL Security Including Ciphers, Protocols & Detect Flaws testssl.sh – Test SSL Security Including Ciphers, Protocols & Detect Flaws
testssl.sh is a free command line tool to test SSL security, it checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.


One Response to fzem – MUA (Mail User Agent) / Mail Client Fuzzer

  1. navin March 7, 2009 at 10:59 am #

    wow, and I thought this couldn’t be done!! Thanks krakowlabs!!