Date: Tue, 20 Dec 2016 06:28:47 -0500 From: Rich Rumble <richrumble@...il.com> To: john-users@...ts.openwall.com Subject: Re: Bruteforce auto-generated md5crypt On Mon, Dec 19, 2016 at 10:45 PM, Xender Cage <cybercooo@...il.com> wrote: > Thanks for the reply, Rich and Darren. > > I think, dump-force is the best suitable options for me. > How do I force john to switch to "dump-force" mode? > > The Incremental doesn't suit in this case, because as I said it first use > the word-list and make a hybrid attack first. > It is "$john --incremental mypasswd" (Any of these will do, some may need to be altered in john.conf to suit) john --format=md5 --session=dumbforce hashes.txt --external=dumbforce john --format=md5 --session=dumbdumb hashes.txt --external=dumbdumb john --format=md5 --session=knownforce hashes.txt --external=knownforce Google ->site:openwall.com search_terms_here http://www.openwall.com/lists/john-users/2008/03/17/2 http://openwall.info/wiki/john/mailing-list-excerpts Read the comments in John.conf around DUMBforce, it still may not be what you want, depending on the dumbforce you use, it may not have any CAPITAL letters, or it may try characters that you don't need to try horizontal TAB or 8-bit codes.Trying those characters when you know your passwords don't have them is a waste of time, on an already slow mode. MASK I do believe is faster than external mode when it comes to searching for all characters. (google site:openwall.com mask) john --format=md5 --session=mask hashes.txt --mask=?a?a?a?a?a?a again if the hashed password is going to be over 10-12 characters when cracked, dumbforce and or mask may never get to those lengths quickly, you can specify --men-length=8 for a little head start (pick the number, 8 is an example) Incremental is better for guessing human generated passwords, but it will eventually try them all, it starts by guessing likely password patterns because it learned from plain-text passwords. -rich
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