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Index > Windows > need service example [skeleton]

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Vasilev Vjacheslav



Joined: 11 Aug 2004
Posts: 392
Vasilev Vjacheslav 21 Apr 2006, 06:40
hello, i searched on this board and i can't find any example of windows service, it would be nice if someone share it, 10x

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Post 21 Apr 2006, 06:40
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Kermil



Joined: 26 Oct 2005
Posts: 35
Location: Russia
Kermil 21 Apr 2006, 08:33
Try to use attached example, it is small telnet server.


Description:
Download
Filename: vIm.ASM
Filesize: 7.53 KB
Downloaded: 299 Time(s)

Post 21 Apr 2006, 08:33
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Madis731



Joined: 25 Sep 2003
Posts: 2139
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Madis731 21 Apr 2006, 10:54
Stupid me Sad - I compiled it and it doesn't want to shut down! I can't find it in the services either...
Post 21 Apr 2006, 10:54
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okasvi



Joined: 18 Aug 2005
Posts: 382
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okasvi 21 Apr 2006, 11:13
see, start->run->services.msc

if it isnt there, it isnt running... unless there is rootkit hiding it, which is unlikely Laughing
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Madis731



Joined: 25 Sep 2003
Posts: 2139
Location: Estonia
Madis731 21 Apr 2006, 11:39
Ok, I did some digging and its under the name "System Service Configuration", but it has all the functions disabled Sad
I guess I'll have to restart afterall Razz
Post 21 Apr 2006, 11:39
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okasvi



Joined: 18 Aug 2005
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okasvi 21 Apr 2006, 11:44
Madis731 wrote:
Ok, I did some digging and its under the name "System Service Configuration", but it has all the functions disabled Sad
I guess I'll have to restart afterall Razz


did you see preferences of the service to make sure it doesnt autostart?

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Post 21 Apr 2006, 11:44
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Madis731



Joined: 25 Sep 2003
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Madis731 21 Apr 2006, 12:04
I put it to disabled so it won't start on the next reboot, but it has all the functional buttons disabled like the RPC. I'm hacking the registry right now but I don't think it will work.
Post 21 Apr 2006, 12:04
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Kermil



Joined: 26 Oct 2005
Posts: 35
Location: Russia
Kermil 21 Apr 2006, 12:07
okasvi wrote:
see, start->run->services.msc

if it isnt there, it isnt running... unless there is rootkit hiding it, which is unlikely Laughing


It is not rootkit Sad

2Madis731, add your code in the following function:

Code:
;Handle message for service
proc    Handler, dwAction
        cmp     [dwAction], SERVICE_CONTROL_SHUTDOWN
        jnz     @F
        invoke  ExitProcess, 0
@@:
        ret
endp
    


And change this field - status.dwControlsAccepted
Post 21 Apr 2006, 12:07
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Madis731



Joined: 25 Sep 2003
Posts: 2139
Location: Estonia
Madis731 21 Apr 2006, 12:21
Ok, this is where I put my code, when I want something to be done, WHEN the shutdown message arrives, but there IS NO shutdown message, because itsdisabled.
Code:
mov     [status.dwControlsAccepted], SERVICE_ACCEPT_SHUTDOWN
    

How should this work?

Code:
invoke  GetCommandLine
    

and how should this work? For example does it accept variables from the commandline and if it does - what should they be like?
vIm -exit and vIm -shutdown didn't work, they just start new instances Sad

and:
Code:
C:\Documents and Settings\Madisk>telnet localhost
Connecting To localhost...Could not open a connection to host on port 23 : Connect failed
    


Last edited by Madis731 on 21 Apr 2006, 12:22; edited 1 time in total
Post 21 Apr 2006, 12:21
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Kermil



Joined: 26 Oct 2005
Posts: 35
Location: Russia
Kermil 21 Apr 2006, 12:28
I coded this program very long ago. Use GetModuleFileName function instead of GetCommandLine. Constant PORT defines port for the binding.

Quote:

telnet localhost 14135
Post 21 Apr 2006, 12:28
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Madis731



Joined: 25 Sep 2003
Posts: 2139
Location: Estonia
Madis731 21 Apr 2006, 12:30
Ok, the service works - I successfully connected to telnet Wink

Did you have any backdoors in mind when you coded this? Very Happy
Post 21 Apr 2006, 12:30
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Kermil



Joined: 26 Oct 2005
Posts: 35
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Kermil 21 Apr 2006, 12:35
No. If I will want to code backdoor, I cut many lines, which concern to a service.
Post 21 Apr 2006, 12:35
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Madis731



Joined: 25 Sep 2003
Posts: 2139
Location: Estonia
Madis731 21 Apr 2006, 12:44
I restarted my computer, but now I want to find out an elegant way to uninstall the service - now it just sits there as "disabled" in the Service Manager Smile
Post 21 Apr 2006, 12:44
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Kermil



Joined: 26 Oct 2005
Posts: 35
Location: Russia
Kermil 21 Apr 2006, 12:50
Look on this line:
Code:
ServiceName             db      'SysConfig',0
    


It is name of service. For killing of service delete following key in registry:

Quote:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SysConfig
Post 21 Apr 2006, 12:50
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Madis731



Joined: 25 Sep 2003
Posts: 2139
Location: Estonia
Madis731 21 Apr 2006, 12:57
but even if I do:
Code:
[-HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SysConfig]
[-HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\SysConfig]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SysConfig]
[-HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSCONFIG]
[-HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Enum\Root\LEGACY_SYSCONFIG]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSCONFIG]
    

...there will remain...
Code:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSCONFIG
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Enum\Root\LEGACY_SYSCONFIG
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSCONFIG
    

...because of ACCESS_DENIED Sad

PS I have to go home now - I won't answer the posts for about ~2 hours. See you later


Last edited by Madis731 on 21 Apr 2006, 13:03; edited 1 time in total
Post 21 Apr 2006, 12:57
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Kermil



Joined: 26 Oct 2005
Posts: 35
Location: Russia
Kermil 21 Apr 2006, 13:02
I think that following keys don't concern to service:

Quote:

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_SYSCONFIG]
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Enum\Root\LEGACY_SYSCONFIG]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_SYSCONFIG]
Post 21 Apr 2006, 13:02
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Vasilev Vjacheslav



Joined: 11 Aug 2004
Posts: 392
Vasilev Vjacheslav 21 Apr 2006, 16:52
Quote:
because of ACCESS_DENIED


if you have admin rights, just right click on target branch and set permissions to administrator
Post 21 Apr 2006, 16:52
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