Message-ID: <CALCvwp6xuti75-DGb2t4XFD60YCiAiTkom_E8WogQU1EsojMHA@mail.gmail.com>
Date: Mon, 26 Sep 2011 11:26:56 +1000
From: GloW - XD <doomxd@...il.com>
To: Madhur Ahuja <ahuja.madhur@...il.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Privilege escalation on Windows using Binary
	Planting

Hrmm that sounds abit to good to be true :P
id love to see what it involves...ie, the PoC.. and, i dont use
googleupdate,so,why would this affect non chrome users.. i dunno.. still
seems like not enough there to convince me yet, sorry.
xd



On 26 September 2011 11:18, Madhur Ahuja <ahuja.madhur@...il.com> wrote:

> I havn't sent this email without doing a Proof of concept. It actually
> works with *Google Update Service*.
>
> The restricted user can replace GoogleUpdate.exe to execute malicious code.
> This service is installed by any of Google component such as Picasa, Google
> Talk etc.
>
> http://www.google.com/support/installer/bin/answer.py?answer=98805
>
> Madhur
>
> On Monday, September 26, 2011, GloW - XD wrote:
>
>> Haha , too good and too true thor !
>>
>> Maybe he can trick the user into installing on a FAT32 partition first,
>> and THEN get the to execute from a remote share!
>>
>> Rofl x10.
>>
>> Agreed , this kind of attack, is NOT deasible in 2011, try maybe, 2006.
>>
>> Anyhow it has been a pleasure, ending this BS i think once and for all,
>> lookup how winlogon works for one thing, then look at how windows creates
>> and maintains a service_table, and then at the dlls, wich are protected ofc,
>> you cannot touch msgina.dll,without ALOT of help from a rootkit or something
>> similar, in wich case, why would you need to ?
>> You could add an admin, hidden, and in simple batfile script (yes i do
>> have my own code but no it is not for kids..), this is 10seconds and hidden,
>> so when you have gotten that far, why would you bother to hijack a dll ?
>>
>> You CANNOT do crap,without complete ADMIN not SYSTEm, ADMIN$ share, and
>> total axcs to all sockets, meaning, all pipe control and thats where half of
>> windows exchanges smb shares for one thing, you guys dont seem to know CRAP
>> about windows to start with, then have the gall to raise such a frigging
>> ridiculous topic about a non happening, YOUTUBE ONE 'real' event, of this
>> being useful, or, even just working, and i would look but, you wont, cannot,
>> and will never be able to, especially on newer systems of windows7-8.
>> As i said earlier, enjoy your bs DFLL hijacking, but ms, dont care for it,
>> and whatever patches they instilled, dont touch even service_table.. so,
>> they have not given it a high prio,and why shuld they.
>>
>> This is simply a case of a secteam gaining notoriety, to try and make this
>> a 'big bug!!' , to try and gain brownie points from MS. Even tho, i dont
>> believe in many things MS, I know windows system, and how to break it,
>> better than many people, and i can tell you now, this whole DLL hijack, is a
>> complete and utter waste of your times.
>> But... keep on going, maybe MS will send you another 'thankyou' email ;)
>> xd / crazycoders.com / #haxnet@Ef
>>
>>
>>
>>
>> On 26 September 2011 10:52, Thor (Hammer of God) <thor@...merofgod.com>wrote:
>>
>>  Maybe he can trick the user into installing on a FAT32 partition first,
>> and THEN get the to execute from a remote share!
>>
>> On Sep 25, 2011, at 5:30 PM, "Travis Biehn" <tbiehn@...il.com> wrote:
>>
>>   It might be a fun experiment to see what DLLs they're looking for :.)
>>
>>
>> -Travis
>>
>> On Sun, Sep 25, 2011 at 2:57 PM, <kz20fl@...glemail.com> wrote:
>>
>> To replace a service executable you usually need administrator access
>> anyway.
>>
>>
>> ------Original Message------
>> From: Madhur Ahuja
>> Sender: full-disclosure-bounces@...ts.grok.org.uk
>> To: security-basics@...urityfocus.com
>> To: full-disclosure@...ts.grok.org.uk
>> Subject: [Full-disclosure] Privilege escalation on Windows using
>> BinaryPlanting
>> Sent: 25 Sep 2011 19:31
>>
>> Imagine a situation where I have a Windows system with the restricted
>> user access and want to get the Administrator access.
>>
>> There are many services in Windows which run with SYSTEM account.
>>
>> If there exists even one such service whose executable is not
>> protected by Windows File Protection, isn't it possible to execute
>> malicious code (such as gaining Administrator access) simply by
>> replacing the service executable with malicious one and then
>> restarting the service.
>>
>> As a restricted user, what's stopping me to do this ?
>>
>> Is there any integrity check performed by services.msc or service
>> itself before executing with SYSTEM account ?
>>
>> Madhur
>>
>> _______________________________________________
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>>  Sent from my POS BlackBerry  wireless device, which may wipe itself at
>> any moment
>>  _______________________________________________
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>>
>>
>>  --
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>>
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