46 lines
837 B
NASM
46 lines
837 B
NASM
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; Example of 64-bit PE program
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format PE64 GUI
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entry start
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section '.text' code readable executable
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start:
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sub rsp,8*5 ; reserve stack for API use and make stack dqword aligned
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mov r9d,0
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lea r8,[_caption]
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lea rdx,[_message]
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mov rcx,0
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call [MessageBoxA]
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mov ecx,eax
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call [ExitProcess]
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section '.data' data readable writeable
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_caption db 'Win64 assembly program',0
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_message db 'Hello World!',0
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section '.idata' import data readable writeable
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dd 0,0,0,RVA kernel_name,RVA kernel_table
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dd 0,0,0,RVA user_name,RVA user_table
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dd 0,0,0,0,0
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kernel_table:
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ExitProcess dq RVA _ExitProcess
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dq 0
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user_table:
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MessageBoxA dq RVA _MessageBoxA
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dq 0
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kernel_name db 'KERNEL32.DLL',0
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user_name db 'USER32.DLL',0
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_ExitProcess dw 0
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db 'ExitProcess',0
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_MessageBoxA dw 0
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db 'MessageBoxA',0
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