All Questions
Tagged with john-the-ripper brute-force
12
questions
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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....
- 1
0
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153
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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 ...
0
votes
1
answer
3k
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John The Ripper succedeed in finding password without printing it
Some days ago I tried to found the password of a file encrypted with AxCrypt 1.x.
I tried John The Ripper and HashCat, but for unknown reason with the last one I failed, and I will open a new thread ...
user285664
1
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0
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243
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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
2
votes
1
answer
9k
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John The Ripper Error: No password hashes loaded when cracking a zip file in kali linux
I was practicing bruteforce attacks using John The Ripper. I want to crack a zip file. I obtained the hash and stored it in a zip file but when I attempt to crack the zip file it is giving me an error ...
2
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2
answers
2k
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dictionary attack hashing algorithm
Does the kind of algorithm used to hash passwords have any advantages or disadvantages in a dictionary attack? i.e. SHA256, MD5, etc. or is it just the dictionary that is used by the attacker matters? ...
- 21
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1
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453
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Generating passwords with rule: the contents within a 10 characters string must maintain a certain ratio of numbers and letters in no particular order
I'm playing around with Kali and am looking to crack my WPA2 default password.
I started generating 10 character passwords with a charset of solely digits and upper alpha lastnight and after 10 mins, ...
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2
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2k
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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 ...
- 121
3
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1
answer
3k
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How is it that tools like Hashcat, JTR able to bruteforce an NTLMv2 hashes?
With regards to the following question about the feasibility of (brute|dictionary|rainbowtable)-forcing an NTLMv2 hash:
How feasible is it for an attacker to brute-force an NTLMv2 response captured ...
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0
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1
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John the Ripper Character Lists
How is it possible to use or prioritize umlauted characters - ä ö ü ß Ä Ö Ü - whilst brute forcing.
I'm not using any wordlist, only dozens of CPU threads via the following command :
./john --fork=...
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6
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3
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Brute force alphanumeric password using JohnTheRipper
I recently recovered a zip archive with some files I need access to, but I can't remember the password. All I can remember is that the password was short (around 3-4 characters), and contained only ...
- 171
3
votes
1
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3k
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Pointers for john the ripper rulesets
I've been pouring over the JtR ruleset documentation and making little progress. I understand how to use it to make various permutations from a given wordlist, that's fine. However, I'm trying to ...
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