Why Win32 driver can not be loaded?

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chris

Joined: 05 Jan 2006
Posts: 62
Location: China->US->China->?

chris 06 Jan 2006, 14:17

Hi, All

I wrote a win32 test driver with fasm, but it seems can not be loaded,
the error code is 0xc0000018,

and DbgView has the following information:

SYSLDR: LdrRelocateImageWithBias() failed 0xc0000018
SYSLDR: OldBase : 00010000
SYSLDR: NewBase : FA600000
SYSLDR: Diff : 0x0
SYSLDR: NextOffset : 00000000
SYSLDR: *NextOffset : 0x0
SYSLDR: SizeOfBlock : 0xfa600000

I don't know why. Can anyone help me about this. My test code is:

Code:

format PE native 5.0 at 10000h
entry DriverEntry

STATUS_DEVICE_CONFIGURATION_ERROR = 0xC0000182

section '.text' code discardable writable readable executable

        _string db 'Hello from the kernel',0

        DriverEntry:

                push _string
                call [DbgPrint]
                add esp, 4
                mov eax, STATUS_DEVICE_CONFIGURATION_ERROR
                ret

section '.rdata' readable notpageable

data 12  

  ImportLookup:  
   DbgPrint             dd rva szDbgPrint
                        dd 0

end data

section 'INIT' data import readable notpageable
        dd rva ImportAddress;   dd rva ImportLookup
        dd 0
        dd 0
        dd rva szNtoskrnl
        dd rva ImportLookup;    dd rva ImportAddress
        times 5 dd 0

ImportAddress:
            dd rva szDbgPrint
            dd 0

szDbgPrint  dw 0
            db 'DbgPrint',0

szNtoskrnl db 'ntoskrnl.exe',0

I followed the Win64 driver sample and change the dq to dd where I think necessary, is there anything wrong? Thanks in advance

Chris

06 Jan 2006, 14:17

velox

Joined: 06 Jan 2006
Posts: 14

velox 06 Jan 2006, 17:25

i think you need a '.reloc' section

06 Jan 2006, 17:25

Reverend

Joined: 24 Aug 2004
Posts: 408
Location: Poland

Reverend 06 Jan 2006, 23:12

I guess driver cannot be loaded at 10000h. System tries to relocate it, but has no info about it (no .reloc) and crashes

06 Jan 2006, 23:12

okasvi

Joined: 18 Aug 2005
Posts: 382
Location: Finland

okasvi 07 Jan 2006, 04:05

Drivers for 98/2000 - http://board.flatassembler.net/topic.php?t=256&postdays=0&postorder=asc&start=50

found from "Windows Frequently Asked Questions (FAQ)" thread Wink

code example by Tomasz Grysztar worked just fine by few small tweaks to make it compile with latest fasm...

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07 Jan 2006, 04:05

chris

Joined: 05 Jan 2006
Posts: 62
Location: China->US->China->?

chris 07 Jan 2006, 13:07

okasvi wrote:

Drivers for 98/2000 - http://board.flatassembler.net/topic.php?t=256&postdays=0&postorder=asc&start=50

found from "Windows Frequently Asked Questions (FAQ)" thread

code example by Tomasz Grysztar worked just fine by few small tweaks to make it compile with latest fasm...

thanks, okasvi. it works now!

07 Jan 2006, 13:07

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