[A51] Rainbow Tables

Snehasish Kar snehasish.cse at live.com
Thu Aug 27 08:45:40 CEST 2015


Dear Jan

Can you please explain the significance of kr02_mergebits, actually why it is required.
From: snehasish.cse at live.com
To: jenda at yakumo.hrach.eu
Date: Wed, 26 Aug 2015 18:30:28 +0530
CC: a51 at lists.srlabs.de
Subject: Re: [A51] Rainbow Tables




Thanks Jan, and will let you know the results. Moreover it was important for as I wanted to make a FPGA version of it.

> Subject: Re: [A51] Rainbow Tables
> To: snehasish.cse at live.com
> CC: a51 at lists.srlabs.de
> From: jenda at yakumo.hrach.eu
> Date: Wed, 26 Aug 2015 12:41:35 +0200
> 
> Hello,
> 
> > But since
> > for lookup I would require exactly the same round functions and I don't know
> > exactly what round functions they have used for generation of the a51
> > tables. So is there any way to know what round functions they have used, so
> > that I can directly purchase the HDD from the site and integrate it to my
> > lookup source code.
> 
> if this is still needed, you can find the extracted RFs from original Kraken at http://jenda.hrach.eu/gitweb/?p=deka;a=blob;f=tables.h;h=58babbb9bb3508a109751c842a9ef23a0146820c;hb=9d97e2152fcc5b2f5fb80ecf3af839976304f2b9 The first one is for table 100 and they go on up to 999 (yes, they repeat. I will compact it in the future)
> 
> Have a look at the rest of the source, for example libvankus.c, to see how they are used.
> 
> (by the way they can be generated algorithmically, it's somewhere in the Kraken source)
> 
> 
> ...speaking of which, the above header file is a part of deka, a portable A5/1 cracker written in OpenCL, designed as a drop-in replacement of Kraken which depends on unsupported Brook and runs only on ATI HD4/5/6xxx cards. There is still some work to do as I finished it today's night, but I have already cracked real GSM keys with it.
> https://brmlab.cz/project/gsm/deka/start
> 
> > Whats the efficiency of the rainbow tables that you have provided..i mean suppose out of 100 calls hpw many should get detected?
> 
> I don't know the efficiency of Kraken's rainbow tables either! Better run some tests...
> 
> On 26.8.2015 11:39, Snehasish Kar wrote:
> > hello Dean
> > 
> > Whats the efficiency of the rainbow tables that you have provided..i mean suppose out of 100 calls hpw many should get detected?
> >
> >> Date: Wed, 15 Jul 2015 13:35:44 -0700
> >> Subject: Re: [A51] Rainbow Tables
> >> From: pierce403 at gmail.com
> >> To: snehasish.cse at live.com
> >> CC: yaniv.sharon at gmail.com; a51 at lists.srlabs.de
> >>
> >> I've never messed with generating my own tables, and I'm not sure what
> >> settings were used to generate the tables found in the torrent. I
> >> know that when I run kraken, I don't have to put in any special
> >> parameters or anything.
> >>
> >> - DEAN
> >>
> >> On Wed, Jul 15, 2015 at 1:22 PM, Snehasish Kar <snehasish.cse at live.com> wrote:
> >> > Dear Dean
> >> >
> >> > Actually I was trying to generate the tables by myself using the references
> >> > of Dr. Nohl, but I dont have much computational power to generate the entire
> >> > 1.8 TB rainbow table. I do have most of the parameters of kraken, like no of
> >> > round function: 8, sub chain length: 2^12 and DP: last 12 bits 0. But since
> >> > for lookup I would require exactly the same round functions and I don't know
> >> > exactly what round functions they have used for generation of the a51
> >> > tables. So is there any way to know what round functions they have used, so
> >> > that I can directly purchase the HDD from the site and integrate it to my
> >> > lookup source code.
> >> >
> >> >> Date: Wed, 15 Jul 2015 12:54:58 -0700
> >> >> Subject: Re: [A51] Rainbow Tables
> >> >> From: pierce403 at gmail.com
> >> >> To: snehasish.cse at live.com
> >> >> CC: yaniv.sharon at gmail.com; a51 at lists.srlabs.de
> >> >
> >> >>
> >> >> So the scripts I wrote assume you have a 2 TB WD Passport target drive
> >> >> plugged in, then it partitions it such that you have a 5 gig partition
> >> >> up front (/dev/sdb1), and creates a blank partition behind that
> >> >> (/dev/sdb2), where it injects the tables (as downloaded from the
> >> >> torrent). The place_tables.sh script pretty much replaces Behemoth,
> >> >> and uses TableConvert to place the tables directly, not even
> >> >> generating the indexes (I just re-use the same indexes that I
> >> >> generated the first time I ran the tool). It then moves over a
> >> >> precompiled kraken binary which works on Kali, and instructions for
> >> >> use.
> >> >>
> >> >> I wrote these scripts when I needed to make like 15 of these rainbow
> >> >> table drives as quickly as possible (It took about 10 hours per
> >> >> drive), which I sold (for the cost of the drive) at DEFCON last year
> >> >> as part of the NSA Playset work we've been doing.
> >> >>
> >> >> - DEAN
> >> >>
> >> >> On Wed, Jul 15, 2015 at 11:52 AM, Snehasish Kar <snehasish.cse at live.com>
> >> >> wrote:
> >> >> > Hi Dean
> >> >> >
> >> >> > Do they provide support with the table parameters like, what is the
> >> >> > chain-length,no of round functions and what round functions n are they
> >> >> > using, so that I can integrate it with my own lookup code.
> >> >> >
> >> >> >> Date: Wed, 15 Jul 2015 11:26:49 -0700
> >> >> >> From: pierce403 at gmail.com
> >> >> >> To: yaniv.sharon at gmail.com
> >> >> >> CC: A51 at lists.srlabs.de
> >> >> >> Subject: Re: [A51] Rainbow Tables
> >> >> >
> >> >> >>
> >> >> >> Hacker Warehouse sells a harddrive with the A5/1 tables and a set of
> >> >> >> scripts I wrote to inject the tables and the required tools onto
> >> >> >> another drive.
> >> >> >>
> >> >> >> http://hackerwarehouse.com/product/rainbow-tables-hdd/
> >> >> >>
> >> >> >> - DEAN
> >> >> >>
> >> >> >> On Wed, Jul 15, 2015 at 7:21 AM, Yaniv Sharon <yaniv.sharon at gmail.com>
> >> >> >> wrote:
> >> >> >> > Hello all…!
> >> >> >> >
> >> >> >> >
> >> >> >> >
> >> >> >> > Who can help me to get the Rainbow Tables [A5/1]
> >> >> >> >
> >> >> >> >
> >> >> >> >
> >> >> >> > ?
> >> >> >> >
> >> >> >> >
> >> >> >> >
> >> >> >> > Thnx
> >> >> >> >
> >> >> >> >
> >> >> >> > _______________________________________________
> >> >> >> > A51 mailing list
> >> >> >> > A51 at lists.srlabs.de
> >> >> >> > https://lists.srlabs.de/cgi-bin/mailman/listinfo/a51
> >> >> >> >
> >> >> >> _______________________________________________
> >> >> >> A51 mailing list
> >> >> >> A51 at lists.srlabs.de
> >> >> >> https://lists.srlabs.de/cgi-bin/mailman/listinfo/a51
> > 
> > 
> > _______________________________________________
> > A51 mailing list
> > A51 at lists.srlabs.de
> > https://lists.srlabs.de/cgi-bin/mailman/listinfo/a51
> > 
> 
> 
> -- 
> Jan Hrach, http://jenda.hrach.eu/
> GPG CD98 5440 4372 0C6D 164D A24D F019 2F8E 6527 282E
 		 	   		  

_______________________________________________
A51 mailing list
A51 at lists.srlabs.de
https://lists.srlabs.de/cgi-bin/mailman/listinfo/a51 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.srlabs.de/pipermail/a51/attachments/20150827/dceb2de4/attachment.html>


More information about the A51 mailing list