203 lines
3.4 KiB
NASM
203 lines
3.4 KiB
NASM
format PE GUI 4.0
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section '.text' code readable executable
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entry start
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start:
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push ebp
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mov ebp, info
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xor ebx, ebx
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; set current directory to exe dir
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push 300
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push ebp
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push ebx
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call [GetModuleFileNameA]
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lea edi, [ebp+eax]
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xchg eax, ecx
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mov al, '\'
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std
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repnz scasb
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cld
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jz @f
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pop ebp
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ret
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@@:
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mov byte [edi+1], bl
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push ebp
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call [SetCurrentDirectoryA]
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; parse command line
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call [GetCommandLineA]
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xchg eax, esi
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; skip leading spaces
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@@:
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lodsb
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cmp al, 0
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jz cmdlineend
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cmp al, ' '
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jbe @b
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cmp al, '"'
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jz p
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; skip EXE name
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@@:
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lodsb
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cmp al, ' '
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ja @b
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dec esi
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jmp q
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p:
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lodsb
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cmp al, 0
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jz cmdlineend
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cmp al, '"'
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jnz p
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q:
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; skip leading spaces
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lodsb
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cmp al, 0
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jz cmdlineend
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cmp al, ' '
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jbe q
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dec esi
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; now esi points to 1st argument
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jmp @f
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cmdlineend:
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mov esi, def
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@@:
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mov al, 'c'
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cmp byte [esi+1], ':'
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jnz @f
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lodsb
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inc esi
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@@:
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mov [ebp], al
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lodsb
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cmp al, '\'
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jz paramsok
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usage:
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mov esi, usagemsg
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jmp failmsg
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paramsok:
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cmp byte [esi], '\'
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jz usage
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mov edi, esi
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mov al, 0
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xor ecx, ecx
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dec ecx
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repnz scasb
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not ecx
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cmp ecx, 290
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jae usage
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lea edi, [ebp+1]
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cmp ecx, 1
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rep movsb
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jz copydefname
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cmp byte [edi-2], '\'
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jnz namegiven
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copydefname:
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dec edi
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mov ecx, defnamesz
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mov esi, defname
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rep movsb
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namegiven:
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push ebx ; hTemplateFile
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; push 0x04000000 ; dwFlagsAndAttributes = FILE_FLAG_DELETE_ON_CLOSE
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push ebx
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push ebx ; dwCreationDisposition
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push ebx ; lpSecurityAttributes
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push ebx ; dwShareMode
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push ebx ; dwDesiredAccess
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push name ; lpFileName
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call [CreateFileA]
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inc eax
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mov esi, errmsg
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jz failmsg
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dec eax
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push ebx
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push ebx
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push ebx
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push ebx
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sub edi, ebp
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push edi
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push ebp
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push 0Fh
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push eax
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call [DeviceIoControl]
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test eax, eax
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mov esi, errmsg2
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jz failmsg
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push ebx
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push 2 ; EWX_REBOOT
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call [ExitWindowsEx]
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pop ebp
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ret
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failmsg:
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push ebx
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push ebx
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push esi
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push ebx
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call [MessageBoxA]
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pop ebp
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ret
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align 4
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data import
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dd 0,0,0
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dd rva kernel32_name
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dd rva kernel32_thunks
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dd 0,0,0
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dd rva user32_name
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dd rva user32_thunks
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dd 0,0,0,0,0
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kernel32_thunks:
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CreateFileA dd rva CreateFileA_thunk
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CloseHandle dd rva CloseHandle_thunk
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DeviceIoControl dd rva DeviceIoControl_thunk
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GetCommandLineA dd rva GetCommandLineA_thunk
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SetCurrentDirectoryA dd rva SetCurrentDirectoryA_thunk
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GetModuleFileNameA dd rva GetModuleFileNameA_thunk
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dd 0
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user32_thunks:
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MessageBoxA dd rva MessageBoxA_thunk
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ExitWindowsEx dd rva ExitWindowsEx_thunk
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dw 0
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CreateFileA_thunk:
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dw 0
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db 'CreateFileA'
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CloseHandle_thunk:
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dw 0
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db 'CloseHandle'
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DeviceIoControl_thunk:
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dw 0
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db 'DeviceIoControl'
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GetCommandLineA_thunk:
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dw 0
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db 'GetCommandLineA'
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SetCurrentDirectoryA_thunk:
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dw 0
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db 'SetCurrentDirectoryA'
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GetModuleFileNameA_thunk:
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dw 0
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db 'GetModuleFileNameA'
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MessageBoxA_thunk:
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dw 0
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db 'MessageBoxA'
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ExitWindowsEx_thunk:
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dw 0
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db 'ExitWindowsEx',0
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kernel32_name db 'kernel32.dll',0
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user32_name db 'user32.dll',0
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end data
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section '.data' data readable writable
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data resource from 'klbrico.res'
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end data
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name db '\\.\'
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vxdfilename db 'ldklbr.vxd',0
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errmsg db 'Cannot load driver',0
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errmsg2 db 'Invalid parameter',0
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usagemsg db 'Usage: 9x2klbr [[drive:]\[path\][imagename]]',0
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def db '\'
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defname db 'kolibri.img',0
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defnamesz = $ - defname
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info rb 300
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