Sunday, August 23, 2020

Osueta: A Simple Python Script To Exploit The OpenSSH User Enumeration Timing Attack


About Osueta?
   Osueta it's a simple Python 2 script to exploit the OpenSSH User Enumeration Timing Attack, present in OpenSSH versions <= 7.2 and >= 5.*. The script has the ability to make variations of the username employed in the bruteforce attack, and the possibility to establish a DoS condition in the OpenSSH server.

    Read more: OpenSSH User Enumeration Time-Based Attack

   The bug was corrected in OpenSSH version 7.3.

   Authors of Osueta:

Osueta's Installation
   For Linux users, open your Terminal and enter these commands:
   If you're Windows users, follow these steps:
  • Install Python 2.7.x from Python.org first. On Install Python 2.7.x Setup, choose Add python.exe to Path.
  • Download Osueta-master zip file.
  • Then unzip it.
  • Open CMD or PowerShell window at the Osueta folder you have just unzipped and enter these commands:
    pip install python-nmap paramiko IPy
    python osueta.py -h

Advice: Like others offensive tools, the authors disclaims all responsibility in the use of this script.

Osueta help menu:

Osueta's examples:
   A single user enumeration attempt with username variations:
python2 osueta.py -H 192.168.1.6 -p 22 -U root -d 30 -v yes

   A single user enumeration attempt with no user variations a DoS attack:
python2 osueta.py -H 192.168.1.6 -p 22 -U root -d 30 -v no --dos yes

   Scanning a C class network with only one user:
python2 osueta.py -H 192.168.1.0/24 -p 22 -U root -v no 

   Scanning a C class network with usernames from a file, delay time 15 seconds and a password of 50000 characters:
python2 osueta.py -H 192.168.1.0/24 -p 22 -L usernames.txt -v yes -d 15 -l 50

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John The Ripper


"A powerful, flexible, and fast multi-platform password hash cracker John the Ripper is a fast password cracker, currently available for many flavors of Unix (11 are officially supported, not counting different architectures), DOS, Win32, BeOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. It supports several crypt(3) password hash types which are most commonly found on various Unix flavors, as well as Kerberos AFS and Windows NT/2000/XP LM hashes. Several other hash types are added with contributed patches. You will want to start with some wordlists, which you can find here or here. " read more...

Website: http://www.openwall.com/john

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Spykey - FUD Win32 Keylogger And Reverse Shell

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