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Thread: Bruteforce with descending characters - zzz,zzy,zzx
Post: RE: Bruteforce with descending characters - zzz,zz...
| From the PM, it looks like you'd benefit from doing what philsmd described - using the 'skip' and 'limit' options to split the job across two nodes.
philsmd, I'm actually not aware of a simple tutori... |
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royce |
hashcat
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9 |
1,576 |
04-26-2020, 04:48 PM |
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Thread: Bruteforce + rules
Post: RE: Bruteforce + rules
| To fully take advantage of GPU for a fast hash like MD5, you have to have more than a few rules.
You might try emulating a hybrid attack with generated rules.
https://hashcat.net/wiki/doku.php?i... |
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royce |
hashcat
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14 |
14,530 |
11-22-2017, 04:50 AM |
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Thread: Bruteforce + rules
Post: RE: Bruteforce + rules
| Yeah, like I said in my edit - it doesn't work like I was hoping it would. I don't have a better answer yet.
But notice that what I was trying to do - generate some of the word on GPU with a large ... |
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royce |
hashcat
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14 |
14,530 |
11-22-2017, 05:32 AM |
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Thread: Bruteforce + rules
Post: RE: Bruteforce + rules
| OK, this is ugly as heck, and buggy (it doesn't fully emulate bruteforce for the last two characters), but it's getting close:
Code:
--
$ for item in `mp64 '?aTEMP?a'`; do echo "di6${item}iE${it... |
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royce |
hashcat
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14 |
14,530 |
11-22-2017, 06:20 AM |
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Thread: Bruteforce + rules
Post: RE: Bruteforce + rules
| I'm guessing ... but if I had to say, it's probably that in practice, most attacks are possible without it (by chaining stuff together, Unix-style) - so adding it internally could (arguably) add unnec... |
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royce |
hashcat
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14 |
14,530 |
11-22-2017, 05:43 PM |
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Thread: Bruteforce + rules
Post: RE: Bruteforce + rules
| Man, I thought I tried that and it didn't work. But I checked and it was failing for other syntax reasons.
So:
Code:
--
$ cat double.rule
d
$ mp64 '$?a$?a' >append-aa.rule
$ head appen... |
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royce |
hashcat
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14 |
14,530 |
11-22-2017, 08:33 PM |
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Thread: Bruteforce + rules
Post: RE: Bruteforce + rules
| You might try increasing the number of masks, to see if that improves performance.
But generally speaking, I suspect that full bruteforce has some attack-specific optimizations that make it pretty ... |
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royce |
hashcat
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14 |
14,530 |
11-23-2017, 06:18 AM |
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Thread: Bruteforce + Custom characters
Post: RE: Bruteforce + Custom characters
| If the first 8 characters are truly unknown, then the first 8 positions of the mask would be ?a, and the rest would be literal / hard-coded:
?a?a?a?a?a?a?a?aAlis-ZA |
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royce |
hashcat
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1 |
1,857 |
02-17-2018, 06:27 PM |
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Thread: Brute-Force mask
Post: RE: Brute-Force mask
| There are probably too many combinations to reasonably exhaust, but to model how many masks would be needed, you can use the `policygen` tool from the PACK toolkit:
https://github.com/iphelix/pack/... |
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royce |
hashcat
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4 |
1,108 |
05-20-2020, 04:04 AM |
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Thread: Brute-Force mask
Post: RE: Brute-Force mask
| Yep. That's what will take 49 years. :) |
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royce |
hashcat
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4 |
1,108 |
05-20-2020, 10:35 AM |
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Thread: Brute-Force custom character
Post: RE: Brute-Force custom character
| Following up from your other deleted post, in which you said there are exactly 8 upper and 5 digits.
There are probably too many combinations to reasonably exhaust, but to model how many masks woul... |
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royce |
hashcat
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2 |
792 |
05-20-2020, 04:07 AM |
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Thread: brute forcing sha256 - need help locating salt in open source code
Post: RE: brute forcing sha256 - need help locating salt...
| And if you need it before it's added to hashcat, you'll have to fall back to other tools. John the Ripper supports it with a dynamic mode (CPU only):
Code:
--
Format label ... |
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royce |
hashcat
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8 |
6,868 |
02-17-2018, 07:21 PM |
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Thread: Brute Force- Mask,ntml hash?
Post: RE: Brute Force- Mask,ntml hash?
| There is no way to determine the length of a plaintext from the hash. This is true for all hashes, and is by design. You cannot know the length until you have cracked it.
You can use other informat... |
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royce |
hashcat
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1 |
2,734 |
10-05-2016, 05:40 PM |
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Thread: Brain working slow!!!
Post: RE: Brain working slow!!!
| Yes, especially with fast hashes like MD5, a slow Internet connection definitely makes a difference. I speak from Alaskan experience. :)
You might switch to only using --brain-client-features=2, so... |
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royce |
General Talk
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4 |
3,280 |
11-10-2018, 11:48 PM |
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Thread: Brain behavior
Post: RE: Brain behavior
| The target hashlist does have to be file-checksum-level identical, IIRC. But I'm not positive. But it also shouldn't be very hard to create a very simple test case to verify it directly. |
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royce |
hashcat
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4 |
2,815 |
12-08-2018, 03:41 AM |
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Thread: Brain as a centralized potfile?
Post: RE: Brain as a centralized potfile?
| 1. Yes. All candidates are centrally reported and indexed. For slow hashes, this is effective, because it allows all clients to skip those candidates. For fast hashes, this will quickly bottleneck the... |
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royce |
hashcat
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3 |
2,094 |
12-16-2018, 10:28 PM |
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Thread: blowfish brute
Post: RE: blowfish brute
| Just as descrypt (-m 1500) is based on DES (but is much more, because it adds rounds/stretching/etc.), and md5crypt (-m 500) is similarly derived from MD5, it is the bcrypt hash (-m 3200) that is buil... |
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royce |
hashcat
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17 |
24,506 |
08-31-2016, 11:22 PM |
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Thread: blowfish brute
Post: RE: blowfish brute
| An artificial hash is fine. The $2a$ format is indeed blowfish-based bcrypt.
Can you post the full command line you're using? |
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royce |
hashcat
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17 |
24,506 |
09-01-2016, 01:23 AM |
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Thread: BLAKE2
Post: RE: BLAKE2
| 259.4 MH/s on my 750 Ti. ;)
(That's with -O and -w 4.) |
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royce |
hashcat
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4 |
3,133 |
11-11-2018, 03:38 PM |
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Thread: Bitslice status and broken nvcc
Post: RE: Bitslice status and broken nvcc
| Can the source be reduced to a minimal test case, suitable for sharing with the nvcc team? |
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royce |
General Talk
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16 |
25,329 |
10-25-2015, 07:40 AM |
