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shutdownall 19 Jul 2012, 15:41
Please post complete changed code.
Did you adapt your values for * MessageBoxA * ExitProcess ? You could move org to the line directly in front of title: but have to be aware that ALL following lines will be affected by org. |
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19 Jul 2012, 15:41 |
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Kazyaka 20 Jul 2012, 11:54
Here is a complete code:
Code: ; ; manual PE ; image_base equ 0x400000 alignment equ 0x4 stack_reserve equ 0x1000 stack_commit equ 0x1000 heap_reserve equ 0x1000 heap_commit equ 0x1000 ; ; dos header ; pe header ; optional header ; directory entries ; import header ; code directory ; import directory ; format binary as "exe" use32 dos_header: dw 'MZ' ; DOS signature db 0x3A dup(0) ; unused dd 0x40 ; PE header address pe_header: db 'PE',0,0 ; PE signature dw 0x014C ; cpu (386) dw 1 ; number of sections dd 0 ; timestamp dd 0 ; symbol table address dd 0 ; number of symbols dw sizeof.header ; size of optional header dw 0x010F ; characteristics optional_header: dw 0x010B ; magic dw 0 ; linker version dd 0 ; size of code section dd 0 ; size of initialised data dd 0 ; size of uninitialise data dd code_directory ; entry point address dd 0 ; base of code dd 0 ; base of data dd image_base ; base of image dd alignment ; section alignment dd alignment ; file alignment dw 0 ; os version major dw 0 ; os version minor dw 0 ; image version major dw 0 ; image version minor dw 4 ; subsystem version major dw 0 ; subsystem version minor dd 0 ; win32 version (reserved) dd sizeof.image ; image size dd code_directory ; header size dd 0 ; checksum dw 0x0002 ; subsystem (GUI) dw 0 ; dll characteristics dd stack_reserve ; stack reserve size dd stack_commit ; stack commit size dd heap_reserve ; heap reserve size dd heap_commit ; heap commit size dd 0 ; loader flags (obsolete) dd 16 ; number of directory entries directory_entries: dq 0 ; export dd import_directory ; import section rva dd sizeof.import ; import section size dq 14 dup(0) ; the rest import_header: dq '.import' ; name dd sizeof.import ; virtual size dd code_directory ; rva dd sizeof.import ; raw size dd code_directory ; raw pointer to data dd 0 ; pointer to relocations dd 0 ; pointer to line numbers dw 0 ; number of relocations dw 0 ; number of line numbers dd 0x0E0000020 ; characteristics align alignment code_directory: org image_base push 0 push title push message push 0 call[MessageBoxA] push 0 call[ExitProcess] title: db 'Title',0 message: db 'Hello world',0 import_directory: MessageBoxA dd 0x7E4507EA ExitProcess dd 0x7C81CAFA file_end: sizeof.import = file_end-import_directory sizeof.header = import_header-optional_header sizeof.image = file_end And here is a problem because org changes all lines in code. |
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20 Jul 2012, 11:54 |
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shutdownall 20 Jul 2012, 15:15
file_end changes after org and sizeof.image is calculated wrong.
You could do correct it's calculation by: sizeof.image = file_end-image_base+code_directory-doc_header Anyway I am not sure why you want to use org in this context. To use "...+image_base" is the better alternative I think. Anyway it is calculated during compile not in runtime. So there is no disadvantage about the add. |
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20 Jul 2012, 15:15 |
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baldr 26 Jul 2012, 20:26
Kazyaka,
Import directory entry should point to somewhat different structure than simple list of some constants. You may consult PE/COFF specification for further directions. Another option is to resort to ready-made hand-written PEs that are abundant here and there. P.S. Moderators, this thread has nothing to do with macros. |
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26 Jul 2012, 20:26 |
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