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Message-ID: <CABtNtWFdRWvfOzL-vcqRrQwpgLWXt7ictTnr7HvQCVmAiaDMKw@mail.gmail.com>
Date: Sun, 15 Mar 2015 07:55:00 +0800
From: Kai Zhao <loverszhao@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: Extend AFL to fuzz as you want
> XML is sure not convenient but it is powerful
Sorry I forgot to describe why XML is powerful. XML can handle complex
formats, such as
7z format. The 7z format is as follow:
$7z$0$19$0$1122$8$d1f50227759415890000000000000000$1412385885$ data_length
$112$ data
The valid() function require strlen(data) == data_length * 2.
Complex hash formats like 7z can be handled with XML. But it's impossible
for the expression
like "$siemens-s7$1$%40h$%40h". I think the expression is good but it can
handle complex
hash format.
If we want to fuzz valid(), the expression like "$siemens-s7$1$%40h$%40h"
is ok.
If we want to fuzz functions after valid(), the expression can not do that.
Thank you,
sincerely
Kai
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