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Message-ID: <20150816190804.GA25202@openwall.com>
Date: Sun, 16 Aug 2015 22:08:04 +0300
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: Overstrike rule with UTF-8 characters?
As an alternative to magnum's response:
On Sun, Aug 16, 2015 at 07:50:21AM -0500, nyxgeek wrote:
> Unicode is possible in other areas with John rules. For example, I can do the following, and it works to INSERT:
>
> <* >\r[00123456789] A\p[z0-9]"\xc3\x94"
BTW, you can shorten this to:
<* >\r[00-9] A\p[z0-9]"\xc3\x94"
and actually the same approach works for overstriking as well. You just
need to delete the two "characters" you want to overstrike first:
>[0-9A-F] D\0 D\0 A\0"\xc3\x94"
or better (proper length check for a 2-byte character to fit):
>[1-9A-G] D\p[0-9A-F] D\0 A\0"\xc3\x94"
Of course, since this operates on octets rather than UTF-8 characters,
it may produce some strings with invalid UTF-8 characters as a result
(when overstriking not at a UTF-8 character boundary), along with the
correct and desired results.
You can also use the overstrike command to achieve the same:
>[1-9A-G] o\p[0-9A-F]\xc3 o\1\x94
Alexander
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