Navigation



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

Last updated: September 9, 2015 | 4,773 views

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.

Share
Tweet
Share
Buffer
WhatsApp
Email
0 Shares
Posted in: Exploits/Vulnerabilities, Hacking Tools, Secure Coding

,


Latest Posts:


Socialscan - Command-Line Tool To Check For Email And Social Media Username Usage Socialscan – Command-Line Tool To Check For Email And Social Media Username Usage
socialscan is an accurate command-line tool to check For email and social media username usage on online platforms, given an email address or username,
April 30, 2022 - 30 Shares
CFRipper - CloudFormation Security Scanning & Audit Tool CFRipper – CloudFormation Security Scanning & Audit Tool
CFRipper is a Python-based Library and CLI security analyzer that functions as an AWS CloudFormation security scanning and audit tool
January 24, 2022 - 15 Shares
CredNinja - Test Credential Validity of Dumped Credentials or Hashes CredNinja – Test Credential Validity of Dumped Credentials or Hashes
CredNinja is a tool to quickly test credential validity of dumped credentials (or hashes) across an entire network or domain very efficiently.
January 5, 2022 - 20 Shares
assetfinder - Find Related Domains and Subdomains assetfinder – Find Related Domains and Subdomains
assetfinder is a Go-based tool to find related domains and subdomains that are related to a given domain from a variety of sources including Facebook and more.
December 30, 2021 - 16 Shares
Karkinos - Beginner Friendly Penetration Testing Tool Karkinos – Beginner Friendly Penetration Testing Tool
Karkinos is a light-weight Beginner Friendly Penetration Testing Tool, which is basically a 'Swiss Army Knife' for pen-testing and/or hacking CTF's.
August 31, 2021 - 293 Shares
Aclpwn.Py - Exploit ACL Based Privilege Escalation Paths in Active Directory Aclpwn.Py – Exploit ACL Based Privilege Escalation Paths in Active Directory
Aclpwn.py is a tool that interacts with BloodHound< to identify and exploit ACL based privilege escalation paths.
July 7, 2021 - 205 Shares


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!!