full-disclosure - Re: Multipath-ROP: Tools available?

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Message-ID: <4E2AAF94.30200@halfdog.net>
Date: Sat, 23 Jul 2011 11:25:08 +0000
From: halfdog <me@...fdog.net>
To: Dan Rosenberg <dan.j.rosenberg@...il.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Multipath-ROP: Tools available?

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Sorry for the noise, I forgot to place the files on the server. Now link
is valid.

I'm also currently adding analyzer support for mov 0xx(esp), %exx
instructions, to see if that increase the number of usable targets found.

halfdog wrote:
> I tried to create a minimalistic implementation that still needs
> massive manual work, but could be a start. If found a target sequence
> in libc, so that 5 different library load offsets all lead to storage
> of the library load offset in %ebp and jump of to the next de-aslred
> address (only 4 out of 5, I'm to tired to do the 5th address also) -
> currently all set to 0x41414141 for debugging. A better analyzer
> could perhaps improve the number of targets and alternative execution
> pathes.
> 
> See 
> http://www.halfdog.net/Security/2011/ReturnOrientedProgrammingTechniques/

- --
> 
http://www.halfdog.net/
PGP: 156A AE98 B91F 0114 FE88  2BD8 C459 9386 feed a bee
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