Re: anybody know good service for cracking md5?

[Christian Sciberras <uuf6429 () gmail com>]

FINE. Replace "useful" with "widely popular".




On Thu, Feb 4, 2010 at 1:04 PM, Anders Klixbull <akl () experian dk> wrote:

>  lol they have been useful for years son
> just because YOU never found a use for them doesn't mean noone else has :)
>
>
>
>  ------------------------------
> *From:* Christian Sciberras [mailto:uuf6429 () gmail com]
> *Sent:* 4. februar 2010 13:00
> *To:* Anders Klixbull
> *Cc:* Valdis.Kletnieks () vt edu; full-disclosure () lists grok org uk
>
> *Subject:* Re: [Full-disclosure] anybody know good service for cracking
> md5?
>
> Uh, in the sense that they are finally becoming *actually* useful...
>
>
>
>
>
> On Thu, Feb 4, 2010 at 12:58 PM, Anders Klixbull <akl () experian dk> wrote:
>
> >  seems to be cropping in?
> > as far as know rainbow tables has been around for years...
> >
> >
> >
> >  ------------------------------
> > *From:* full-disclosure-bounces () lists grok org uk [mailto:
> > full-disclosure-bounces () lists grok org uk] *On Behalf Of *Christian
> > Sciberras
> > *Sent:* 3. februar 2010 23:02
> > *To:* Valdis.Kletnieks () vt edu
> > *Cc:* full-disclosure () lists grok org uk
> > *Subject:* Re: [Full-disclosure] anybody know good service for cracking
> > md5?
> >
> >   Actually dictionary attacks seem to work quite well, especially for
> > common users which typically use dictionary and/or well known passwords
> > (such as the infamous "password").
> > Another idea which seems to be cropping in, is the use of hash tables with
> > a list of known passwords rather then dictionary approach.
> > Personally, the hash table one is quite successful, consider that it
> > targets password groups rather than a load of wild guesses.
> >
> > Cheers.
> >
> >
> >
> >
> > On Wed, Feb 3, 2010 at 10:26 PM, <Valdis.Kletnieks () vt edu> wrote:
> >
> > > On Wed, 03 Feb 2010 23:42:07 +0300, Alex said:
> > >
> > > > i find some sites which says that they can brute md5 hashes and WPA
> > > dumps
> > > > for 1 or 2 days.
> > >
> > > Given enough hardware and a specified md5 hash, one could at least
> > > hypothetically find an input text that generated that hash.  However,
> > > that
> > > may or may not be as useful as one thinks, as you wouldn't have control
> > > over
> > > what the text actually *was*.  It would suck if you were trying to crack
> > > a password, and got the one that was only 14 binary bytes long rather
> > > than
> > > the one that was 45 printable characters long. ;)
> > >
> > > Having said that, it would take one heck of a botnet to brute-force an
> > > MD5 has
> > > in 1 or 2 days. Given 1 billion keys/second, a true brute force of MD5
> > > would
> > > take on the order of 10**22 years.  If all 140 million zombied computers
> > > on the
> > > internet were trying 1 billion keys per second, that drops it down to
> > > 10**16
> > > years or so - or about 10,000 times the universe has been around already.
> > >
> > > I suspect they're actually doing a dictionary attack, which has a good
> > > chance
> > > of succeeding in a day or two.
> > >
> > >
> > > _______________________________________________
> > > Full-Disclosure - We believe in it.
> > > Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> > > Hosted and sponsored by Secunia - http://secunia.com/
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/