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for questions relating to the cracking of passwords and the practices to mitigate against passwords being cracked.

0 votes

Cracking a truncated hash of type sha256(salt+pw+salt)

I'm not aware of an attack tool that will currently do this without at least some external processing (which means reduced speed): hashcat supports the format (-m 22300), but doesn't check for trunca …
Royce Williams's user avatar
1 vote

John the Ripper MaxLen

The included charset files are based on the default maximum length. You'll need to generate charsets for your target length: john --pot=rockyou.txt --make-charset=alnum62.chr Existing files will be …
Royce Williams's user avatar
1 vote

Use my own wordlist for single mode in John the Ripper

First, (unless you're talking about "single crack" mode generally), I'm not sure what you mean by "a reduced wordlist of user information". It sounds like you may be describing a simple wordlist attac …
Royce Williams's user avatar
4 votes
Accepted

Is there any smarter way to crack wpa-2 handshake?

WPA2 is indeed a slow hash. But in the real world, performance is better than you might suspect: An attacker can leverage multiple GPUs. With hashcat, six GTX 1080s can exhaust ?d?d?d?d?d?d?d?d?d i …
Royce Williams's user avatar
4 votes
Accepted

WPA password cracking setup

Assuming that the passphrase was randomly generated, the two pieces of information needed to perform the calculation for a fully brute force attack are: Keyspace. This is how many possible combinatio …
Royce Williams's user avatar
1 vote

Is there a utility you would use to create wordlists from directories and files?

You're much better off using the major cracking tools' built-in ability to ingest entire directories. For hashcat, just use a directory name where you would use a filename. Add rules with -r. Assuming …
Royce Williams's user avatar
4 votes
Accepted

Hashcat solving truncated hashes

As of the current version (3.30), hashcat does not currently support truncated hashes beyond the half-MD5 modes. In my discussions with the team, I made the pitch (basically what I wrote here). So f …
Royce Williams's user avatar
5 votes
Accepted

Should I vary the length of my completely-random passwords for the best security?

I wouldn't bother with varying the length. 15 characters from a 95-character space is probably more than sufficient - and varying the length won't buy you as much as simply increasing the length. Usi …
Royce Williams's user avatar
8 votes
Accepted

Hash list for practicing password cracking

You've got the right idea - this is a great way to learn. For beginning and intermediate cracking, the best general password lists are actual lists of passwords - those found in leaks with large gene …
Royce Williams's user avatar
1 vote

How to safely extract hashes from domain controller for auditing?

For safely dumping the hashes, this Optiv reference outlines a number of methods. The most likely of which for your use case is probably to use ntdsgrab.rb to make a volume shadow copy, and then extra …
Royce Williams's user avatar
1 vote

JtR with Excel 2013

Yes, you have to convert the hash into a format that the password-cracking suite is expecting. The best collection of such tools is from the John the Ripper project, and the one that is probably what …
Royce Williams's user avatar
4 votes
Accepted

John the ripper multiple mask attack

I'm not aware of a way to pass a list of masks to john as a single command (in the way that hashcat allows). The best you can do today is to use the custom placeholder syntax (-1, -2, etc.) just as …
Royce Williams's user avatar
1 vote
Accepted

Passwordlist generation, permutations and long passwords

You're 100% right that storing all possible permutations wouldn't scale very well. An efficient way to generate all possible passphrases from a source wordlist "on the fly" (without having to store t …
Royce Williams's user avatar
2 votes
Accepted

Hardware compatibility with Hashcat in Windows 10 (64-bit)

I don't have a lot of great news for you, but I do have a couple of pointers. On the Intel side, as noted in the output, the Intel OpenCL drivers have a known problem with hashcat that must be resolv …
Royce Williams's user avatar
4 votes
Accepted

Hashcat: How to discard words of length less than N after rules have been applied?

The answer depends on the "speed" of the target hash: If it's a fast hash (like MD5), Daisetsu is roughly correct - that it's not worth the trouble to worry about it (though it can vary based on att …
Royce Williams's user avatar

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