Questions tagged [john-the-ripper]
John the Ripper is a fast password cracker, currently available for many flavors of Unix, Windows, DOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. Besides several crypt(3) password hash types most commonly found on various Unix systems, supported out of the box are Windows LM hashes, plus lots of other hashes and ciphers in the community-enhanced version ("jumbo"). [openwall.com]
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Decrypting xls file using John The Ripper
I need to open an excel file and see its contents which is locked with password. As I made some research on the internet, I have found that only way was a brute force attack. So I used John the Ripper ...
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Opening password file with John The Ripper
I have an old Windows domain SMB sniffer file circa 1998 and just out of interest I want to see if I can crack it now with John The Ripper. I believe the file was generated using the L0phtCrack SMB ...
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John the Ripper add special characters
I have been trying to do this for hours and can´t really figure this out.
How can I pass only this range of signs to John the Ripper?
./john hashes --mask=Pepito[1234567890!"·$%&/()=|@#~€]--...
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Brute force hex password with exactly two special characters using JohnTheRipper
I want to optimize the way I'm using John the Ripper. I have a password with a know length (9) that consists only of (lower-case) hex characters and exactly two special characters.
First I tried ...
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John the Ripper doesn't use my wordlist file properly
When I use JtR to crack an encrypted zip file I have, it seems like JtR doesn't go through the wordlist I have ... I do the following steps:
$ brew install john-jumbo
$ export PATH=$PATH:/usr/local/...
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What's the most simple approach to this wordlist generation and ruleset problem?
This is a password recovery project, which is more complex than just generated a wordlist, since using my tries (see below) it seems to be not enough to just generate a wordlist.
I'm trying to recover ...
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John not cracking an NTLM hash
I have been trying to do it with john the ripper as the following:
john --FORMAT=NT --wordlist=~/usr/share/wordlists/rockyou.txt hash.txt
the hash I am trying to crack is:
Computer:1001:...
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"john --format=axcrypt" is not returning results
I would like to open a mysterious old file that I found on my Hard Disk, the contents of which I do not know nor can I guess from its name (PB-mp4-rar.axx).
The file was password-protected with the ...
user285664
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Cracking passwords following rules with John or hashcat
I would like to crack the forgotten password of a very old archive file (rar) with JTR or hashcat.
I remember it was starting with a certain number from a set of numbers e.g.
prefix number from the ...
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John The Ripper hash does not correlate with hashcat example hash
I want to recover a zip password using hashcat.
hashcat requires the hash of the desired password.
In order to obtain it, I have tried using zip2john using:
sudo zip2john /home/kali/Desktop/myfile.zip ...
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Understanding the output of John the Ripper
The hash I am trying to break is 279412f945939ba78ce0758d3fd83daa, it's part of a task for learning John.
I created a file hash.txt using: echo -n 279412f945939ba78ce0758d3fd83daa > hash.txt.
Then, ...
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Using John the Ripper for Blockchain.info second password
Is there a way to use JtR for Blockchain.info's (v2) secondary password?
I already tried the blockchain2john.py file, and it does not ask for primary password (which I know already) so it is going to ...
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Dynamic format used in John the Ripper jumbo way slower than MDXFind
I'm currently doing some research on a pretty huge list of hashes (approx. 2 millions) and thus I'd like to improve my cracking speed. The hash format is 12 rounds of SHA512(password + salt), which ...
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John the ripper output formatting
I'm supposed to crack some passwords from a file. I've done john pwlist.lst > passwords.txt which is outputting the files into my txt file.
I'd like to make it such that when John is cracking the ...
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John the ripper - "no password hashes loaded " for pdf
I'm trying to decrypt a pdf that I no longer have the password for. When I use JohnTheRipper, it can't seem to load any password hashes.
Basically, this is what I run.
└─$ perl pdf2john.pl /home/...
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Trying to customize john rules, require at least one symbol in passwords
I"m trying to crack passwords that contains at least one symbol, e.g
qwe@123
I'm reading through the cheat sheet here, didn't find anything relevant, does anyone know?
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Using John the Ripper with custom encryption function
I have a working script done with python to do dictionary attack on a few hashes
import hashlib
def main():
print("Starting...")
users = []
with open('users.txt') as f:
for line ...
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John the Ripper modify passwords before checking
Assume I have a password I want to crack in the following format:
100 times the character 'a' prepended to
Some word found in a wordlist
John will probably not be able to crack this with the default ...
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John the Ripper performance
I have two questions regarding performance of John the Ripper.
Within the format files, there is a variable named MIN_KEYS_PER_CRYPT and MAX_KEYS_PER_CRYPT. How much do they influence the performance....
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John the Ripper not working properly
I am new to JTR and am currently trying to crack some passworts I generated.
Because I am new to JTR, I wanted to start by hashing a simple password like "Cat", write it in a file named pw....
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Cracking 1000-password assignment from hashed file
OS: Ubuntu 20.04 on VMWare, tool: John the ripper
The whole system is up-to-date
The file has 1000 hashed passwords. There are 40 rules provided, a small word list is provided to help crack part of ...
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Unable to open multipart zip with john the ripper
I have this multiple-part zip files as a list of {File.zip.001, File.zip.002, ..., File.zip.013} that happen to be protected by password.
When I try to unzip them using the Gnome GUI, I see click on ...
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JohnTheRipper not working
I'm using this command to try to crack the hashes or the "contrasena" file and it doesn't do anything. It only says using default input encoding but nothing after.
john --wordlist=/usr/share/...
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Variant of words for John
Is it possible to specify a mask (of sorts) on the command like with John the Ripper where most of the words are known (but not the permutations used in the passphrase)?
Example: If part of the ...
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john the ripper not not loading hashes
I created an unshadowed file to run through john, it worked fine. I created some additional users and created a new file with those hashes in there. I run john and get
Using default input encoding: ...
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Issue with John the ripper with new version of kali
I have just installed the most recent version of Kali Linux and I am using john the ripper (version 1.9.0-jumbo) to crack passwords in shadow.
I have followed the following tutorial cracking linux ...
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Retrieving partially forgotten Linux password: Beginning and end known
I forgot my linux password. I have access to the shadow file (Fedora 33), and I believe it should be possible to retrieve it with John the Ripper as I remember the first 4 characters, I remember the ...
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error john the ripper on id_rsa conversion
Why doesn't my conversion from id_rsa work?
I have an empty file in the final conversion idrsa.hash
and when I use command cat idrsa.hash to check the result is
ERRNO2 no such file or directory : ...
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Rar (Zip) Decryption, how does it work
I was wondering how rar decryption works.
I know that when I enter a password to encrypt my rar file, my password is derived into a key that is used to encrypt the rar file.
But how does the ...
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cracking HMAC-SHA1 when the password and seed are inverted
I happen to have a few hashes generated with code that did this (it has been changed to use a more "standard" bcrypt call):
$ python3
>>> import hmac
>>> hmac.new(b'The ...
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Getting an error when running John The Ripper on 7zip file
I've never really worked with this tool, John Jumbo 1.9. I'm just curious since people say 7zip is a secure way of encrypting files, so I wanted to try it myself. Anyways, I encrypted a file with 7z, ...
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john ripper and option --mask
I have a text file parole.txt containing the dictionary to be passed to john with the --wordlist option.
Here is an extract of the file
mamma
papa
libro
...
...
if I use the --mask=?u?w?d option I ...
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Issue using John The Ripper
First things first, I'm a newbie so, bear with me...
I created a word list with a combination of a possible password for a certain user using Crunch (it's the dictionary output) and need to use John ...
user226855
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Unable to start hashcat in mode 13600 WinZip : Separator Unmatched
I have a zip file containing a JPEG image of size 3.5 MB, encrypted with AES-256. I used WinZip for the creation of the zip file. In order to create the hash of the zip file, I used John The Ripper's ...
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Breaking a tough password using john
I'm trying to crack a pretty advanced password on my computer and I've had it running for about a day on john's default settings.
Its gotten through roughly (a day times 23000kp/s) passwords.
I have ...
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John the ripper 0 password hashes cracked, 38 left
Kali linux latest build trying to use John the Ripper
I have the hashes in a file called userhash.txt
So I try this: (just starting to see if it works)
john --wordlist=word.lst userhash.txt
Using ...
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