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 Forums >>  Target Specific - General  >>  What is: ntdll.TpCaptureCaller

Topic created on: September 26, 2007 20:04 CDT by dokks .

I've a client/server I've been trying to document and I'm seeing a line in olly that says:

RETURN to kernel32.762F0DE2 from ntdll.TpCaptureCaller. After a couple different attempts to glean anything useful from google, I looked in the Win32 call chains and couldn't find any reference.

Anyone know what this function is?

  anonymouse     September 27, 2007 08:05.58 CDT
dont see or remember any capturcaller apis :( with or without symbols

a search on user memory space now yields no such string


0:000> s -a 0 l?0x7fffffff "Capture"
0050e6f4  43 61 70 74 75 72 65 00-00 00 00 47 65 74 43 6c  Capture....GetCl
0050ea4a  43 61 70 74 75 72 65 00-00 00 00 52 65 6c 65 61  Capture....Relea
0050eaaa  43 61 70 74 75 72 65 00-00 00 00 53 65 74 43 61  Capture....SetCa
70b57b3b  43 61 70 74 75 72 65 00-00 cd 02 57 61 69 74 4d  Capture....WaitM
70b57b5b  43 61 70 74 75 72 65 00-00 0b 02 50 74 49 6e 52  Capture....PtInR
70b57bcb  43 61 70 74 75 72 65 00-00 6b 02 53 65 74 52 65  Capture..k.SetRe
70c26547  43 61 70 74 75 72 65 00-00 cd 02 57 61 69 74 4d  Capture....WaitM
70c26567  43 61 70 74 75 72 65 00-00 0b 02 50 74 49 6e 52  Capture....PtInR
70c265d7  43 61 70 74 75 72 65 00-00 d9 01 4d 61 70 57 69  Capture....MapWi
762ddb61  43 61 70 74 75 72 65 00-00 41 00 43 6c 69 70 43  Capture..A.ClipC
7726560d  43 61 70 74 75 72 65 53-74 61 63 6b 42 61 63 6b  CaptureStackBack
77266b31  43 61 70 74 75 72 65 00-00 04 01 47 65 74 43 6c  Capture....GetCl
77266c01  43 61 70 74 75 72 65 00-00 27 02 52 65 67 69 73  Capture..'.Regis
775514c8  43 61 70 74 75 72 65 54-68 75 6d 62 6e 61 69 6c  CaptureThumbnail
775614dd  43 61 70 74 75 72 65 00-00 bb 00 44 72 61 77 53  Capture....DrawS
775617ad  43 61 70 74 75 72 65 00-00 43 02 53 65 74 43 61  Capture..C.SetCa
775617bb  43 61 70 74 75 72 65 00-00 6c 01 47 65 74 57 69  Capture..l.GetWi
77ce2d75  43 61 70 74 75 72 65 53-74 61 63 6b 42 61 63 6b  CaptureStackBack
77d31040  43 61 70 74 75 72 65 00-47 65 74 43 61 72 65 74  Capture.GetCaret
77d32432  43 61 70 74 75 72 65 00-52 65 6c 65 61 73 65 44  Capture.ReleaseD
77d325d6  43 61 70 74 75 72 65 00-53 65 74 43 61 72 65 74  Capture.SetCaret
77d5dfff  43 61 70 74 75 72 65 42-75 66 66 65 72 00 00 02  CaptureBuffer...
77d5e013  43 61 70 74 75 72 65 4d-65 73 73 61 67 65 42 75  CaptureMessageBu
77d5e031  43 61 70 74 75 72 65 42-75 66 66 65 72 00 00 f9  CaptureBuffer...
77e7e817  43 61 70 74 75 72 65 43-6f 6e 74 65 78 74 00 52  CaptureContext.R
77e7e829  43 61 70 74 75 72 65 53-74 61 63 6b 42 61 63 6b  CaptureStackBack
77e7fbcf  43 61 70 74 75 72 65 43-6f 6e 74 65 78 74 00 4e  CaptureContext.N
77e7fbe7  43 61 70 74 75 72 65 53-74 61 63 6b 42 61 63 6b  CaptureStackBack
77e83f49  43 61 70 74 75 72 65 4d-65 73 73 61 67 65 4d 75  CaptureMessageMu
77ebbcc1  43 61 70 74 75 72 65 42-75 66 66 65 72 00 00 04  CaptureBuffer...
77ebbcd5  43 61 70 74 75 72 65 4d-65 73 73 61 67 65 53 74  CaptureMessageSt
77ebbcf7  43 61 70 74 75 72 65 42-75 66 66 65 72 00 00 ab  CaptureBuffer...
77ebcbd9  43 61 70 74 75 72 65 4d-65 73 73 61 67 65 4d 75  CaptureMessageMu
77ebd5b1  43 61 70 74 75 72 65 4d-65 73 73 61 67 65 42 75  CaptureMessageBu
77f8230b  43 61 70 74 75 72 65 42-75 66 66 65 72 00 43 73  CaptureBuffer.Cs
77f82336  43 61 70 74 75 72 65 4d-65 73 73 61 67 65 42 75  CaptureMessageBu
77f8234e  43 61 70 74 75 72 65 4d-65 73 73 61 67 65 4d 75  CaptureMessageMu
77f8237a  43 61 70 74 75 72 65 4d-65 73 73 61 67 65 53 74  CaptureMessageSt
77f82392  43 61 70 74 75 72 65 54-69 6d 65 6f 75 74 00 43  CaptureTimeout.C
77f823d5  43 61 70 74 75 72 65 42-75 66 66 65 72 00 43 73  CaptureBuffer.Cs
77f84792  43 61 70 74 75 72 65 43-6f 6e 74 65 78 74 00 52  CaptureContext.R
77f847a4  43 61 70 74 75 72 65 53-74 61 63 6b 42 61 63 6b  CaptureStackBack
77f847bd  43 61 70 74 75 72 65 53-74 61 63 6b 43 6f 6e 74  CaptureStackCont
0:000>


any more information ? what os ? xp ? your kernel32.dll seems to be loaded at a different address than mine (dont think randomisation of address space is available in xp )

can you post call stack ? (alt+k) when you see that line

  dokks   September 27, 2007 16:00.17 CDT
Sorry, yes my OS is Vista Enterprise and blast if I can find where that call was.

When I do, I'll post the stack. Thanks.

  frankboldewin     September 28, 2007 01:09.55 CDT
just a short question:

is your machine the os runs on a ThinkPad?

typically those notebooks have lots of dlls with functions starting with Tp*

  NicoDE     January 21, 2008 05:49.38 CST
In Windows kernel modules "Tp" is the prefix for "Thread Pool" functions.

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