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Vulnerable Application

This module attempts to use john the ripper to decode AIX based password hashes, such as:

  • DES based passwords

Sources of hashes can be found here: source, source2

Verification Steps

  1. Have at least one user with a des password in the database
  2. Start msfconsole
  3. Do: use auxiliary/analyze/jtr_aix
  4. Do: run
  5. You should hopefully crack a password.

Options

CONFIG

The path to a John config file (JtR option: --config). Default is metasploit-framework/data/john.conf

CUSTOM_WORDLIST

The path to an optional custom wordlist. This file is added to the new wordlist which may include the other USE items like USE_CREDS, and have MUTATE or KORELOGIC applied to it.

DeleteTempFiles

This option will prevent deletion of the wordlist and file containing hashes. This may be useful for running the hashes through john if it wasn't cracked, or for debugging. Default is false.

ITERATION_TIMEOUT

The max-run-time for each iteration of cracking

JOHN_PATH

The absolute path to the John the Ripper executable. Default behavior is to search path for john and john.exe.

KORELOGIC

Apply the KoreLogic rules to Wordlist Mode (slower). Default is false.

MUTATE

Apply common mutations to the Wordlist (SLOW). Mutations are:

  • '@' => 'a'
  • '0' => 'o'
  • '3' => 'e'
  • '$' => 's'
  • '7' => 't'
  • '1' => 'l'
  • '5' => 's'

Default is false.

POT

The path to a John POT file (JtR option: --pot) to use instead. The pot file is the data file which records cracked password hashes. Kali linux's default location is /root/.john/john.pot. Default is ~/.msf4/john.pot.

USE_CREDS

Use existing credential data saved in the database. Default is true.

USE_DB_INFO

Use looted database schema info to seed the wordlist. This includes the Database Name, each Table Name, and each Column Name. If the DB is MSSQL, the Instance Name is also used. Default is true.

USE_DEFAULT_WORDLIST

Use the default metasploit wordlist in metasploit-framework/data/wordlists/password.lst. Default is true.

USE_HOSTNAMES

Seed the wordlist with hostnames from the workspace. Default is true.

USE_ROOT_WORDS

Use the Common Root Words Wordlist in metasploit-framework/data/wordlists/common_roots.txt. Default is true.

Scenarios

Create hashes:

creds add user:des_password hash:rEK1ecacw.7.c jtr:des
creds add user:des_passphrase hash:qiyh4XPJGsOZ2MEAyLkfWqeQ jtr:des

Crack them:

[*] Hashes Written out to /tmp/hashes_tmp20190211-5021-1p3x0lx
[*] Wordlist file written out to /tmp/jtrtmp20190211-5021-66w3u0
[*] Cracking descrypt hashes in normal wordlist mode...
Using default input encoding: UTF-8
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
0g 0:00:00:00 DONE (2019-02-11 19:29) 0g/s 4206Kp/s 4206Kc/s 4206KC/s scandal..vagrant
Session completed
[*] Cracking descrypt hashes in single mode...
Using default input encoding: UTF-8
Will run 8 OpenMP threads
Press 'q' or Ctrl-C to abort, almost any other key for status
0g 0:00:00:05 DONE (2019-02-11 19:29) 0g/s 6681Kp/s 6681Kc/s 6681KC/s qt1902..tude1900
Session completed
[*] Cracking descrypt hashes in incremental mode (Digits)...
Using default input encoding: UTF-8
Will run 8 OpenMP threads
Warning: MaxLen = 20 is too large for the current hash type, reduced to 8
Press 'q' or Ctrl-C to abort, almost any other key for status
0g 0:00:00:05 DONE (2019-02-11 19:29) 0g/s 21083Kp/s 21083Kc/s 21083KC/s 73602400..73673952
Session completed
[*] Cracked Passwords this run:
[+] des_password:password
[+] des_passphrase:????????se
[*] Auxiliary module execution completed
msf5 auxiliary(analyze/jtr_aix) > creds
Credentials
===========

host  origin  service  public          private                   realm  private_type        JtR Format
----  ------  -------  ------          -------                   -----  ------------        ----------
                       des_passphrase  ????????se                       Password            
                       des_passphrase  qiyh4XPJGsOZ2MEAyLkfWqeQ         Nonreplayable hash  des
                       des_password    rEK1ecacw.7.c                    Nonreplayable hash  des
                       des_password    password                         Password