37 lines
635 B
NASM
37 lines
635 B
NASM
format binary
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use32
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include 'std.inc'
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; On entrance to each shellcode segment the ebx register will be a vtable of std funcs
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; printf
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; puts
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; scanf
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; sin
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; cos
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; tan
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; asin
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; acos
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; atan
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; malloc
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; free
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; esi contains the base address of the shellcode segment
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; edi contains the address of the part of the flag that this segment fills
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; edx contains the number of the block
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jmp start
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output_text db 'Assuming you got every challenge right here is the flag: %s', ENDL, 0
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start:
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shl edx, 2
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sub edi, edx
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push edi
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mov eax, dword [ebx]
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lea ecx, [esi + output_text]
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push ecx
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call dword [eax]
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add esp, 8
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ret
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resv_stuff 512-$
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