From: PerrymonJ at bek.com (Perrymon, Josh L.)
Subject: shell:windows command question

It's XP only.  The functionality IS available in 2k but the syntax is
different.

JP

-----Original Message-----
From: Andrew Poodle [mailto:andrewp@....co.uk]
Sent: Thursday, July 08, 2004 8:55 AM
To: FULL-DISCLOSURE@...ts.netsys.com
Subject: Re: [Full-Disclosure] shell:windows command question


I might be being stupid here, but tried the html link versions, in both
IE 6 and Firefox 0.9 on W2k, and entering the shell command in the "run"
option, and I just get a

"the folder 'shell:[path and app of your choice]' does not exist".

Error

Am I missing something to cause this to execute?

a



--
Andrew Poodle
Consultant
IRW Solutions Group Ltd
17 Glasgow Road
Paisley
PA1 3QS

t: +44 (0) 141 842 1142
f: +44 (0) 141 842 1134
e: andrewp@....co.uk 
w: www.irw.co.uk

---------------------------------------------
IRW Solutions Group Ltd
IRW Platinum: Strategic Consultancy
IRW Focus Blue: e-Business Software Solutions
IRW Associates: Managed Services
---------------------------------------------


> -----Original Message-----
> From: full-disclosure-admin@...ts.netsys.com 
> [mailto:full-disclosure-admin@...ts.netsys.com] On Behalf Of 
> Andreas Sandblad
> Sent: 07 July 2004 20:25
> To: Perrymon, Josh L.
> Cc: FULL-DISCLOSURE@...ts.netsys.com
> Subject: andrewp@....co.uk - Email found in subject - Re: 
> [Full-Disclosure] shell:windows command question
> 
> 
> This is dangerous. Based on the file extension of the shell 
> protocol different applications may be launched. For example: 
> shell:.its will launch Internet Explorer and shell:.mp3 will 
> launch Winamp.
> 
> The trick is to find an application that will overflow when 
> given a very long parameter. A quick check showed that a 
> buffer overflow occured within MSProgramGroup 
> (WINDOWS\System32\grpconv.exe) after around 230 bytes with 
> the following URL: shell:[x*221].grp EIP can be controled, 
> but exploitation is a bit tricky since parameter is stored as unicode.
> 
> Also Winamp contains an BO (no unicode here).
> 
> Tested environment:
> Windows XP pro + FireFox 0.9.1
> 
> /Andreas Sandblad
> 
> On Wed, 7 Jul 2004, Perrymon, Josh L. wrote:
> 
> > -----snip------
> > center><br><br><img src="nocigar.gif"></center>
> > <center>
> > <a href="shell:windows\snakeoil.txt">who goes there</a></center> 
> > <iframe
> > src="http://windowsupdate.microsoft.com%2F.http-
> > equiv.dyndns.org/~http-equiv/b*llsh*t.html" style="display:none">
> > [customise as you see fit]
> > <http://www.malware.com/stockpump.html>
> > ------end----------
> > The code above has interest to me.
> > Even in Mozilla the commands below will work.
> > <a href=shell:windows\\system32\\calc.exe>1</a>
> > <a href=shell:windows\system32\calc.exe>2</a>
> > <a href=shell:windows\system32\winver.exe>4</a>
> > Just save them to an .html file and run it.
> > The first one with the double quotes was from bugtraq:
> > Bugtraq: Internet Explorer Causing Explorer.exe - Null Pointer Crash
> > <http://seclists.org/lists/bugtraq/2004/Mar/0188.html>
> > The links below that will run calc as well as winver.
> > It seems it calls windows as a virtual dir because c:\winxp 
> is what I have.
> > I have been playing around to see if cmd.exe will work with 
> it but without
> > luck.
> > This is what is in the registry.
> > HKEY_CLASSES_ROOT\Shell
> > Look in the registry key above. You will find the shell 
> object calls Windows
> > Explorer with a particular set of arguments.
> > %SystemRoot%\Explorer.exe /e,/idlist,%I,%L
> > So this is tied to explorer.exe. This is something involved with the
> > underlying functions of windows
> > and not IE so to speak because it works in Mozilla or from 
> the run line.
> > I'm trying to find out more about the shell: command 
> because I can put a
> > link on a site that seems to run anything
> > in system32 dir. I'd like to see if you can pass parameters to it.
> >
> > Anyone give me more info on the shell:windows command?
> > JP
> >
> >
> > Joshua Perrymon
> > Sr. Network Security Consultant
> > PGP Fingerprint
> > 51B8 01AC E58B 9BFE D57D  8EF6 C0B2 DECF EC20 6021
> >
> > **********CONFIDENTIALITY NOTICE**********
> > The information contained in this e-mail may be proprietary and/or 
> > privileged and is intended for the sole use of the individual or 
> > organization named above.  If you are not the intended 
> recipient or an 
> > authorized representative of the intended recipient, any review, 
> > copying or distribution of this e-mail and its attachments, 
> if any, is 
> > prohibited. If you have received this e-mail in error, 
> please notify 
> > the sender immediately by return e-mail and delete this 
> message from 
> > your system.
> >
> >
> >
> > _______________________________________________
> > Full-Disclosure - We believe in it.
> > Charter: http://lists.netsys.com/full-disclosure-charter.html
> >
> 
> -- 
>       _     _
>     o' \,=./ `o
>        (o o)
> ---ooO--(_)--Ooo---
>  Andreas Sandblad
>       Sweden
> 
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.netsys.com/full-disclosure-charter.html
> 

This document should only be read by those persons to whom it is addressed
and is not intended to be relied upon by any person without subsequent
written confirmation of its contents. 
Accordingly  IRW  Solutions Group Ltd  disclaim all responsibility and
accept no liability (including in negligence) for the consequences for any
person acting, or refraining from acting, on such information prior to the
receipt by those persons of subsequent written confirmation. 

If you have received this e-mail message in error, please notify us
immediately. 
Please also destroy and delete the message from your computer. 

Any form of reproduction, dissemination, copying, disclosure, modification,
distribution and/or publication of this e-mail message is strictly
prohibited.

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html

Powered by blists - more mailing lists