Nmap Development: Re: Unofficial WinPcap Installer Issue

["Gianluca Varenni" <gianluca.varenni () gmail com>]

The WinPcap installer uses the functions of the SCM to install the WinPcap 
driver. This is one of the ways to install a non PnP-enumerated driver.

If you try to install the driver by manually writing the registry keys in 
HKLM\System\CurrentControlSet\Services\<your service name>, the 
modifications are not effective until you reboot your machine. And worse, 
this approach might break in future versions of Windows. Those keys should 
not be touched manually.

Have a nice day
GV

----- Original Message ----- 
From: "jah" <jah () zadkiel plus com>
To: "Rob Nicholls" <robert () everythingeverything co uk>
Cc: "nmap-dev" <nmap-dev () insecure org>
Sent: Monday, May 19, 2008 12:46 PM
Subject: Re: Unofficial WinPcap Installer Issue


> Hi,
>
> This might help a bit.
> I've had a look at the CACE installer for winpcap (using 7zip) and it
> includes WinPcapInstall.dll  which exports a public method(?) called
> manage_npf_driver(char *,char)
> It seems that this function calls OpenSCManagerA and CreateServiceA to
> create a service using the Service Control Manager.
> Running sc query npf gives:
>
> SERVICE_NAME: npf
>        TYPE               : 1  KERNEL_DRIVER
>        STATE              : 4  RUNNING
>                                (STOPPABLE,NOT_PAUSABLE,IGNORES_SHUTDOWN)
>        WIN32_EXIT_CODE    : 0  (0x0)
>        SERVICE_EXIT_CODE  : 0  (0x0)
>        CHECKPOINT         : 0x0
>        WAIT_HINT          : 0x0
>        PID                : 0
>        FLAGS              :
>
> So it looks like nmap's winpcap installer will have to do something like
>
> sc create npf binpath= %windir%\system32\drivers\npf.sys type= kernel
>
> start= may also be required, I'm not sure what the value would need to be.
>
> then sc start npf should start the service.
>
> Could be a step in the right direction.
>
> Regards,
>
> jah
>
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