John the Ripper
Stable release
Running john with a password list on a shadow file
Developer(s)	OpenWall
Initial release	October 3, 2002
Repository
Operating system	Cross-platform
Type	Password cracking
License	GNU General Public License Proprietary (Pro version)
Website	www.openwall.com/john/

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John the Ripper is a freepassword cracking software tool.^[2] Originally developed for the Unix operating system, it can run on fifteen different platforms (eleven of which are architecture-specific versions of Unix, DOS, Win32, BeOS, and OpenVMS). It is among the most frequently used password testing and breaking programs^[3] as it combines a number of password crackers into one package, autodetects password hash types, and includes a customizable cracker. It can be run against various encrypted password formats including several crypt password hash types most commonly found on various Unix versions (based on DES, MD5, or Blowfish), KerberosAFS, and Windows NT/2000/XP/2003 LM hash. Additional modules have extended its ability to include MD4-based password hashes and passwords stored in LDAP, MySQL, and others.^[4]

Sample output[edit]

Download John the Ripper - John the Ripper is a fast password cracker, currently available for many flavors of Unix, Windows, DOS, and OpenVMS. MacTheRipper, officially abbreviated as MTR, is a free DVD ripper application for Mac OS X. It helps you copy your DVD movies to your Mac without any protections and quality loss. This is very helpful if you don't want to play the original DVD disc, or making DVD copies for your car (a DVD burner is required). John the Ripper is a fast password cracker, available for many operating systems. Its primary purpose is to detect weak Unix passwords, although Windows LM hashes and a number of other password hash types are supported as well. John the Ripper is free and Open Source software, distributed primarily in source code form.

Here is a sample output in a Debian environment.

John the Ripper is an Open Source password security auditing and password recovery tool available for many operating systems. John the Ripper is an actively developing program. John the Ripper (community jumbo version) comes with a lot of helper utilities. Among these utilities are programs for generating (extracting) a hash. This hash is used to crack the password in John the Ripper.

The first line is a command to expand the data stored in the file 'pass.txt'. The next line is the contents of the file, i.e. the user (AZl) and the hash associated with that user (zWwxIh15Q). The third line is the command for running John the Ripper utilizing the '-w' flag. 'password.lst' is the name of a text file full of words the program will use against the hash, pass.txt makes another appearance as the file we want John to work on.

Then we see output from John working. Loaded 1 password hash — the one we saw with the 'cat' command — and the type of hash John thinks it is (Traditional DES). We also see that the attempt required one guess at a time of 0 with a 100% guess rate.

Attack types[edit]

One of the modes John can use is the dictionary attack. It takes text string samples (usually from a file, called a wordlist, containing words found in a dictionary or real passwords cracked before), encrypting it in the same format as the password being examined (including both the encryption algorithm and key), and comparing the output to the encrypted string. It can also perform a variety of alterations to the dictionary words and try these. Many of these alterations are also used in John's single attack mode, which modifies an associated plaintext (such as a username with an encrypted password) and checks the variations against the hashes. Parallels desktop 12 serial key free.

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John also offers a brute force mode. In this type of attack, the program goes through all the possible plaintexts, hashing each one and then comparing it to the input hash. John uses character frequency tables to try plaintexts containing more frequently used characters first. This method is useful for cracking passwords that do not appear in dictionary wordlists, but it takes a long time to run.

References[edit]

^https://www.openwall.com/lists/announce/2019/05/14/1
^Anonymous (2001). Maximum Linux Security (2 ed.). Sams Publishing. p. 154. ISBN0-672-32134-3.
^'Password Crackers'. Concise Cybersecurity. Archived from the original on 2017-04-04. Retrieved 2016-12-03.
^'John the Ripper'. sectools.org.

External links[edit]

Retrieved from 'https://en.wikipedia.org/w/index.php?title=John_the_Ripper&oldid=1023585654'

/! This is for educational purposes only, and should not be used for unauthorized access, tampering or accessed illegally without owner permission.
This page will help you to retrieve/extract the hash associated to an OSX account. We tried to enumerate all the OS X flavors available, but this article is still 'in beta' depending on the new OS X versions.
Once the hash is extracted, you can send it here and we will try to recover it.

John The Ripper Mac Dmg Free

The same as in 10.2 (Jaguar). See below.

OS X 10.1 (Puma)

The same as in 10.2 (Jaguar). See below.

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Colt woodsman serial number date of manufacture. Dump the hash :
This hash is created using the Unix DES Crypt(3) function, where the password is first truncated to 8 characters.

OS X 10.3 (Panther)

First find out a users' GUID:
Next take that GUID and dump the hash file
The first 64 characters are the NTLM hash (first 32 NT, next 32 LM) and the last 40 characters are the SHA1 hash.

You can obtain the GUID just as in 10.3 (Panther). See above.
After obtaining the GUID, you can dump the passwords just as in 10.5 (Leopard). See below.

OS X 10.5 (Leopard) + OS X 10.6 (Snow Leopard)

First find a users' GUID:
After getting the GUID you can dump various hashes. By default the only hash stored is the salted SHA1. If the user has turned on SMB file sharing then the NTLM hash will also be stored.
If you upgraded from 10.3->10.4->10.5 then the zero salted SHA1 is also stored.
Salted SHA1 (first 8 characters are the salt)
Zero-Salted SHA1 (first 8 characters are the salt and will always be all zeros)
NTLM (first 32 characters are NT, next 32 are LM)

Use this tutorial

OS X 10.8 (Mountain) & 10.9 (Mavericks) & 10.10 (Yosemite)

The shadow files are stored on the filesystem at /var/db/dslocal/nodes/Default/users/%user%.plist.
They are in plist format so you'll need to use the plutil command to view them or use the defaults command to extract/write specific keys if desired.
Only the root user has access to the files.
To view the contents of a shadow file for a user: To get the hash: Where %username% in the above example is the user you're looking for the hash for.
Finally the wanted hash starts with '$ml$' and length is 203 characters.

Few links to help you :
- ht