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Date: Mon, 29 Jul 2019 16:49:37 +0200
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: Trouble cracking with MD5+Salt
On Mon, Jul 29, 2019 at 10:31:25AM -0400, Rich Rumble wrote:
> Thanks! It turned out to be -format=Dynamic_12, and I'm getting around
> 60p/s per thread...
This suggests you have about 100k different salts, right?
> is Dynamic_* implemented in GPU?
No.
> Mybb/IPB hash is just md5 a few times,
Yes.
> which is implemented in GPU for jtr,
No, it currently is not. Oh, you mean MD5 on its own? Then yes.
> would I need to make
> a kernel or anything to take advantage of my other hardware?
Yes, or use hashcat. Apparently, this is "-m 2811" there.
I suggest you run CPU attacks on these hashes with JtR, and GPU attacks
with hashcat. If you have the corresponding usernames (or better yet,
even more user-specific info) and put them into the right fields (mimic
Unix /etc/passwd), then JtR's "--single" will be quite effective.
Alexander
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