Home page logo
/

fulldisclosure logo Full Disclosure mailing list archives

Re: smtpsvc and undocumented registry values
From: Andres Tarasco <atarasco () gmail com>
Date: Wed, 23 Feb 2005 21:08:04 +0100

Try Microsoft IIS Metabase Editor to change that data.

btw, there is a nice pdf about hardening Windows 2003 from
safehack.com people  that explains how to change it

regards,

Andres Tarasco

On Wed, 23 Feb 2005 18:26:40 +0100, Thierry Haven
<thierry.haven () xmcopartners com> wrote:
Hi,
I've been hacking around smtpsvc.dll (Windows Server 2003) in order to hide the Server version when a mail is relayed:

Original header:
"from [192.168.X.X] ([192.168.X.X]) by winserv2003 with Microsoft SMTPSVC(6.0.3790.0);   Wed, 23 Feb 2005 15:47:51 
+0100"

I found that it is possible to remove this information by patching the code directly in the DLL:

Modified header:
"from [192.168.X.X] ([192.168.X.X]) by winserv2003 with some server;     Wed, 23 Feb 2005 15:49:51 +0100"

... Assuming that smtpsvc.dll checks its own version at runtime by retrieving information in the .rsrc section of the 
PE thanks to version.dll calls. However I'd like to know if there is a better way to disable this "feature" (maybe a 
key in the registry ?).

Next I'd like to ask about such undocumented registry values. Where to find information about them ?

Best Regards,

_______________________________________
Thierry Haven - Xmco Partners
Security Consulting / Pentest
web  : http://www.xmcopartners.com
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html



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


  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]