Date: Sat, 13 Jun 2009 14:06:25 +0400 From: Solar Designer <solar@...nwall.com> To: john-users@...ts.openwall.com Subject: "incremental" mode for lengths beyond 8 (was: cracking MD5 hashes more than 8 characters long with a dictionary) On Sat, Jun 13, 2009 at 10:16:32AM +0200, websiteaccess wrote: > How to crack md5 with 10 or more digits (i:digits) ???? As you know from past discussions in here (and perhaps from your experience with JtR), "incremental" mode is limited to lengths up to 8 by default, at compile time. Similarly, I'd expect you to be already familiar with ways to get JtR's "incremental" mode to work for longer passwords, since this topic is being brought up once in a while and you've been with us for a long time. ;-) I recommend that you check out this list of "most useful and currently relevant excerpts from john-users mailing list" on the wiki: http://openwall.info/wiki/john/mailing-list-excerpts Specifically, it links to this posting: http://www.openwall.com/lists/john-users/2007/07/04/6 which gives specific changes to src/params.h to enable JtR's "incremental" mode to try longer candidate passwords. For example, you may pick the suggested settings for lengths up to 10, then generate a .chr file with: ./john --make-charset=digits10.chr -e=filter_digits The posting from 2007 referenced above gives a specific example for purely-alphabetic passwords, but the same approach would also apply to making JtR try lengthy strings of digits. Alternatively, you can use the DumbForce external mode - modify its init() function to set your desired charset and lengths, and it will work just fine. The drawback is that, unlike "incremental" mode, DumbForce won't be trying more common passwords first (for a given length) - but for digits-only, reasonable lengths, and fast saltless hashes you might find that acceptable. Alexander -- To unsubscribe, e-mail john-users-unsubscribe@...ts.openwall.com and reply to the automated confirmation request that will be sent to you.
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.