- Crack Htpasswd John The Ripper No Password Key
- Crack Htpasswd John The Ripper No Password Hashes Loaded
![Crack Htpasswd John The Ripper No Password Crack Htpasswd John The Ripper No Password](/uploads/1/1/8/3/118304319/191738269.png)
Crack Htpasswd John The Ripper No Password Key
So we will save the hashes as well in a file called shadow.txt and we will use the famous password cracker john the ripper in order to crack those hashes.In backtrack john the ripper is located in the following path: /pentest/passwords/john. John the ripper directory. Crack Htpasswd John The Ripper No Password Code. Hellow friends!!Today I will show you how you can make use of john the ripper device for cracking the password for a Security password Protected Zero document, Crack Linux User password and windos user password. I have an old website that I produced a folder that's shielded with htpasswd. John the Ripper is a favourite password cracking tool of many pentesters. There is plenty of documentation about its command line options. I’ve encountered the following problems using John the Ripper. These are not problems with the tool itself, but inherent problems with pentesting and password cracking in general.
In this post I will show you how to crack Windows passwords using John The Ripper.
John the Ripper is a fast password cracker, primarily for cracking Unix (shadow) passwords.Other than Unix-type encrypted passwords it also supports cracking Windows LM hashes and many more with open source contributed patches.
Now lets talk about the password protection method used by Windows. Windows user account passwords are typically stored in SAM hive of the registry (which corresponds to
%SystemRoot%system32configSAM
file), in the SAM
file the password is kept encrypted using the NTLM hash is very well known for its cryptanalysis weaknesses.The SAM file is further encrypted with the SysKey (Windows 2000 and above) which is stored in
%SystemRoot%system32configsystem
file.During the boot-time of Windows the hashes from the SAM
file gets decrypted using the SysKey and the hashes are loaded to the registry is then used for authentication purpose. Both system and SAM
files are unavailable (i.e, locked by kernel) to standard programs (like regedit) during Windows’ runtime .As told earlier NTLM hash is very weak for encrypting passwords.The NTLM encryption algorithm is explained below :
- ASCII password is converted to uppercase
- Padding with null is done until 14 bytes
- Split it in two 7-byte arrays
- Pad both to make 64 bits (8-byte) which will be used to create a DES key
- DES-encrypt the string “[email protected]#$%” using the array as key for each 7-byte array (results 8-byte stream)
- Join 2 cipertexts which forms the NTLM hash (16-byte)
Major pitfals of NTLM hash
- ASCII is not Unicode
- Uppercase reduce complexity
- LM fails with passwords length more than 14 characters
- Salting is not available
- It is easy to determine whether the password is less than or more than 7 characters
Cracking Windows Passwords John The Ripper
For the sake of demonstrating this I had already set a dummy account called
demo
and allotted a password iRock
to it, which will be cracked later-on.Crack Htpasswd John The Ripper No Password Hashes Loaded
User Accounts showing
demo
userI booted using the Ubuntu LiveCD and mounted my Windows partition -
/dev/sda1
Then copied SAM and system files to
/home/prakhar
Then installed
samdump2
and John The Ripper :Then dumped the
syskey
and NTLM hashes from system
and SAM
file, respectively :NTLM hashes recovered from
SAM
fileI then bruteforced the password using John The Ripper :
You can clearly see above, JTR has cracked the password within matter of seconds, I aborted the session in between since password was already recovered. Mission accomplished !