Date: Mon, 24 Sep 2012 16:46:24 -0400 From: David Jones <jonesd@...umbus.rr.com> To: john-dev@...ts.openwall.com Cc: David Jones <jonesd@...umbus.rr.com> Subject: Re: GECOS + single mode problem in JtR On Sep 24, 2012, at 1:42 PM, magnum wrote: > On 24 Sep, 2012, at 16:17 , Dhiru Kholia <dhiru.kholia@...il.com> wrote: > >> vmsdump file (attached) has the actual passwords in the GECOS field. >> However, john still fails to crack the hashes. Any ideas why? >> >> After manually extracting the passwords from the GECOS field and using >> them as input dictionary, john successfully cracks all the hashes. >> >> Is single cracking mode broken? > > From a quick look I believe it properly cracks all ASCII plaintexts. The input file is in ISO-8859 format. How are 8-bit characters handled by this format? This may or may not be just an incorrectly made test file. > The format doesn't do any special treatment of 8-bit characters in passwords. Loader.c would seem to be parsing the GECOS field into words using using separator characters that are in the password (e.g. '*'). >>Dave
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