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Date: Sat, 9 Jan 2021 15:46:12 +0100
From: "Anton Berggren" <>
To: <>
Subject: Sv: Cracking rar password with rar-opencl

Thank you.
Okey so my command will be with this info: john --wordlist=rockyou.txt
--fork=2 --restore
Or am i wrong here?

Yeah, i dont know anything about the password length or language used.
It include only one small file of 12kilobyte.

Sometimes websites use their domain as password.. or simliar. But ive tried
that and also with different variants does not work.
I can restrict the password length to 15 character or so. That most likely.
Dont think its 20 or more.


-----Ursprungligt meddelande-----
Från: Solar Designer <> 
Skickat: den 6 januari 2021 00:12
Ämne: Re: [john-users] Cracking rar password with rar-opencl

On Tue, Jan 05, 2021 at 11:15:12PM +0100, Anton Berggren wrote:
> Attaching screenshot from GPU-Z for some better GPU information/data

Screenshots are discouraged here, but yours does show that your GPU
utilization is changing from none to full and back.  Two sessions (running
different attacks) or one session with "--fork=2" might help.

Once again, most importantly you need to focus the search on candidate
passwords that are actually likely given what you recall about the RAR
archive password.  That said, if you haven't done so yet, I suggest that you
start with the RockYou list, which will complete (given the speeds you
posted) perhaps in 2 hours:

(Given that RAR password cracking is so sensitive to password lengths,
sorting/grouping the wordlist by length would likely improve speeds, but I
guess is tricky for you to do.  This may be more of a reminder for us to add
this as a built-in feature for more JtR formats that need it.)


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