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Date: Wed, 4 May 2016 19:11:26 +0530
From: Harssh Mahajan <harssh@...il.com>
To: john-users@...ts.openwall.com
Subject: Re: PBKDF2-SHA1 3DES/AES

You can create an EC2 instance, install your tools on it. Create an AMI &
configure a Auto-scaling group referencing the AMI.
When you set auto-scaling to 3 instances with any type say g2.2xlarge (GPU
instance) type it will automatically launch 3 instances with the same
programs installed & settings that were in the EC2 instance from which the
AMI was made.

Log into the instances using RDP (Windows) / SSH (Linux), to start the tool
on varied length or whatever the criteria is. You will have to login
remotely to check if they have completed. I am not sure if the tool has any
way to inform you when it has found the combination.

You will be charged hourly for the number of instances running.
For e.g. you run 3 instances of g2.2xlarge (8 virtual cpu, 15 gb ram, 26
ecu) for 10 hours, your cost will be 0.65 x 3 x 10 = 19.50 USD.

For benchmarks you can refer
http://blog.nullmode.com/blog/2015/03/22/36-core-aws-john/

AMI - Amazon Machine Image, a snapshot of the EBS (elastic block store -
disk) volume is created & used to boot up instances.
ECU - 1 ECU = 1.0-1.2 GHz 2007 Xeon,
http://blog.cloudharmony.com/2010/05/what-is-ecu-cpu-benchmarking-in-cloud.html


On Wed, May 4, 2016 at 4:00 PM, Doc Case <drdrgmtn@...o.com> wrote:

> Thank You!
>
> I have contacted sagitta.pw which offer the same kind of service, but
> focused on password cracking.
>
> I didn't thought about Amazon Web services...
>
> Any hint on how to perform parallel instances?  My pc has an Athlon FX,
> with 8 core and i have compiled John with OpenMPI, so seems to work in a
> right way. I don't have experience in AWS, and maybe I've done a bad config
> for my PC because i'm using the John standard configuration... have you
> something to read?
>
>
>
> Thanks again!
>
>
> Sent using Zoho Mail
>
>
>
>
>
>
> ---- On Wed, 04 May 2016 09:16:36 +0200 Harssh Mahajan &
> lt;harssh@...il.com&gt;wrote ----
>
>
>
>
> You could consider using large instances with per hour pricing on AWS
>
> https://aws.amazon.com/ec2/pricing/ for more power, alternate to
> purchasing
>
> hardware.
>
>
>
> To speed up computation, run tasks in parallel and/or on multiple
>
> instances, for varied lengths.
>
>
>
> E.g.
>
>
>
>  - Same instance - Thread 1 for 6-8 length, Thread 2 for 8-10 length and
>
>  so on.
>
>  - Multiple instance - Instance 1 for 6-8 length, Instance 2 for 8-10
>
>  length and so on.
>
>
>
>
>
>
>
> On Wed, May 4, 2016 at 1:36 AM, Doc Case &lt;drdrgmtn@...o.com&gt; wrote:
>
>
>
> &gt; Hi everyone,
>
> &gt;
>
> &gt;
>
> &gt;
>
> &gt; I'm a new user, and I'm a forensic consultant. This is my first time
>
> &gt; cracking a password so complex.
>
> &gt;
>
> &gt; I need help breaking this one because I don't have enough power to
> obtain
>
> &gt; anything in short time... A little background:
>
> &gt;
>
> &gt;
>
> &gt;
>
> &gt; in support of a litigation I've acquired an archive protected with
> system
>
> &gt; in subject. I've extracted the hash with one of the community tool,
> and
>
> &gt; with JTR i began trying all the standard modes:
>
> &gt;
>
> &gt; Single, dictionary, and incremental.
>
> &gt;
>
> &gt; I used the standard free wordlist (all.gz) and my linuxbox, with one
> GT970
>
> &gt; and openCL, works at 3500p/s - c/s - C/s.
>
> &gt;
>
> &gt; I reached three days straight of computational time, without any
> result.
>
> &gt;
>
> &gt; So, I suppose that this password is a good one.
>
> &gt;
>
> &gt; Anyway, I need it and i don't have any shortcut: no common words or
> ideas,
>
> &gt; no info at all.
>
> &gt;
>
> &gt; All I have is brute force, if I don't go wrong.
>
> &gt;
>
> &gt; So I'm here asking for help: is there any way to speed up the work?
> Beside
>
> &gt; buying 24 graphic cards tomorrow, I mean...
>
> &gt;
>
> &gt;
>
> &gt;
>
> &gt; Any help is really appreciated,
>
> &gt;
>
> &gt;
>
> &gt;
>
> &gt; Doc
>
> &gt;
>
> &gt;
>
> &gt;
>
> &gt; Sent using Zoho Mail
>
> &gt;
>
> &gt;
>
> &gt;
>
> &gt;
>
> &gt;
>
> &gt;
>
>
>
>
>
>
>

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