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) <t...@hammerofgod.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" <tbi...@gmail.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, <kz2...@googlemail.com> wrote: > > To replace a service executable you usually need administrator access > anyway. > > > ------Original Message------ > From: Madhur Ahuja > Sender: full-disclosure-boun...@lists.grok.org.uk > To: security-bas...@securityfocus.com > To: full-disclosure@lists.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 > > _______________________________________________ > Full-Disclosure - We believe in it. > Charter: <http://lists.grok.org.uk/full-disclosure-charter.html> > http://lists.grok.org.uk/full-disclosure-charter.html > Hosted and sponsored by Secunia - <http://secunia.com/>http://secunia.com/ > > Sent from my POS BlackBerry wireless device, which may wipe itself at > any moment > _______________________________________________ > Full-Disclosure - We believe in it. > Charter: <http://lists.grok.org.uk/full-disclosure-charter.html> > http://lists.grok.org.uk/full-disclosure-charter.html > Hosted and sponsored by Secunia - <http://secunia.com/>http://secunia.com/ > > > > > -- > Twitter <https://twitter.com/tbiehn> | > LinkedIn<http://www.linkedin.com/in/travisbiehn>| > GitHub <http://github.com/tbiehn> | <http://www.travisbiehn.com> > TravisBiehn.com > > _______________________________________________ > Full-Disclosure - We believe in it. > Charter: <http://lists.grok.org.uk/full-disclosure-charter.html> > http://lists.grok.org.uk/full-disclosure-charter.html > >
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