//

// First we set the detection rules for the engine

// Please note: You will find some well known Search Machine Providers in this list. I add them because

// there are some tunneled requests wich try to start a process with a Search Machine for example. To stop this we added

// the URL of these search engines. This will not affect to use the Search engines on your board naturally. ;)

// Also we can block here some file extensions wich try to use exploit legs to download files from external sources.

// And naturally we block all Worm Exploit Checks

//

$ct_rules = array('chr(', 'chr=', 'chr%20', '%20chr', 'wget%20', '%20wget', 'wget(',

'cmd=', '%20cmd', 'cmd%20', 'rush=', '%20rush', 'rush%20',

'union%20', '%20union', 'union(', 'union=', 'echr(', '%20echr', 'echr%20', 'echr=',

'esystem(', 'esystem%20', 'cp%20', '%20cp', 'cp(', 'mdir%20', '%20mdir', 'mdir(',

'mcd%20', 'mrd%20', 'rm%20', '%20mcd', '%20mrd', '%20rm',

'mcd(', 'mrd(', 'rm(', 'mcd=', 'mrd=', 'mv%20', 'rmdir%20', 'mv(', 'rmdir(',

'chmod(', 'chmod%20', '%20chmod', 'chmod(', 'chmod=', 'chown%20', 'chgrp%20', 'chown(', 'chgrp(',

'locate%20', 'grep%20', 'locate(', 'grep(', 'diff%20', 'kill%20', 'kill(', 'killall',

'passwd%20', '%20passwd', 'passwd(', 'telnet%20', 'vi(', 'vi%20',

'insert%20into', 'select%20', 'nigga(', '%20nigga', 'nigga%20', 'fopen', 'fwrite', '%20like', 'like%20',

'$_request', '$_get', '$request', '$get', '.system', 'http_php', '&aim', '%20getenv', 'getenv%20',

'new_password', '&icq','/etc/password','/etc/shadow', '/etc/groups', '/etc/gshadow',

'http_user_agent', 'http_host', '/bin/ps', 'wget%20', 'uname\x20-a', '/usr/bin/id',

'/bin/echo', '/bin/kill', '/bin/', '/chgrp', '/chown', '/usr/bin', 'g\+\+', 'bin/python',

'bin/tclsh', 'bin/nasm', 'perl%20', 'traceroute%20', 'ping%20', '.pl', '/usr/x11r6/bin/xterm', 'lsof%20',

'/bin/mail', '.conf', 'motd%20', 'http/1.', '.inc.php', 'config.php', 'cgi-', '.eml',

'file\://', 'window.open', '<script>', 'javascript\://','img src', 'img%20src','.jsp','ftp.exe',

'xp_enumdsn', 'xp_availablemedia', 'xp_filelist', 'xp_cmdshell', 'nc.exe', '.htpasswd',

'servlet', '/etc/passwd', 'wwwacl', '~root', '~ftp', '.js', '.jsp', '.history',

'bash_history', '.bash_history', '~nobody', 'server-info', 'server-status', 'reboot%20', 'halt%20',

'powerdown%20', '/home/ftp', '/home/www', 'secure_site, ok', 'chunked', 'org.apache', '/servlet/con',

'<script', '/robot.txt' ,'/perl' ,'mod_gzip_status', 'db_mysql.inc', '.inc', 'select%20from',

'select from', 'drop%20', '.system', 'getenv', 'http_', '_php', 'php_', 'phpinfo()', '<?php', '?>', 'sql=',

'_global', 'global_', 'global[', '_server', 'server_', 'server[', '/modules', 'modules/', 'phpadmin',

'root_path', '_globals', 'globals_', 'globals[', 'ISO-8859-1', 'http://www.google.de/search', '?hl=',

'.txt', '.exe', 'google.de/search', 'yahoo.de', 'lycos.de', 'fireball.de', 'ISO-');

//

// Now the URL Protection Engine

//

$cracktrack = $_SERVER['QUERY_STRING'];

$cracktrack = strtolower($cracktrack);

$checkworm = str_replace($ct_rules, '*', $cracktrack);

if($cracktrack != $checkworm)

{

//

// Collecting information about the Attack and the Attacker

//

$ctl_pmeld = 1;

$ctl_stamp = time();

$ctl_remotead = $_SERVER['REMOTE_ADDR'];

$ctl_query = $_SERVER['QUERY_STRING'];

$ctl_referrer = $_SERVER['HTTP_REFERER'];

$ctl_agent = $_SERVER['HTTP_USER_AGENT'];

//

// Now we built the Line for the Logfile

//

$ctr_logfile = $ctl_pmeld . '||' . $ctl_stamp . '||' . $ctl_remotead . '||' . $ctl_query . '||' . ctl_referrer . '||' . $ctl_agent;

//

// How many entrys are into the Logfile and how much entrys (default 100) are allowed?

// I hardcoded this value because I won't contact the Database during an attack. ;)

//

$ctr_logsize = count(file($phpbb_root_path . "ctracker/logs/logfile_worms.txt"));

$ctr_maxlogs = 100;

//

// Now logging and Counting. The Counter here is asymmetric so just if CTracker has to delete the Log

// it writes something to the Counter. This is better because during an DoS Like attack we only have to

// do one file operation. Into the footer the Counter will also count how many entrys are in the log

// so the Counter-Value is always correct.

//

if ($ctr_logsize > $ctr_maxlogs)

{

$clog = fopen($phpbb_root_path . "ctracker/logs/logfile_worms.txt", "a");

ftruncate($clog, '0');

fwrite($clog, "0||" . $ctl_stamp . "||SYSTEM MESSAGE||AUTOMATIC LOG FILE RESET||-||CRACKERTRACKER\n" . $ctr_logfile . "\n");

fclose($clog);

//

// Because we deleted the Logfile we will now write our new value for the Counter.

//

$ct_counter_val = 0;

$countername = $phpbb_root_path . "ctracker/logs/counter.txt";

$ct_counter_val = @file_get_contents($countername);

$ct_counter_val = $ct_counter_val + 100;

$cfp = fopen ($countername, 'a');

ftruncate($cfp, '0');

fwrite($cfp, $ct_counter_val);

fclose($cfp);

}

else

{

$clog = fopen($phpbb_root_path . 'ctracker/logs/logfile_worms.txt', 'a');

fwrite($clog, $ctr_logfile . "\n");

fclose($clog);

}

//

// Output a warning message and stop the script

//

die("<br><hr width=\"40%\" align=\"left\"><font color=\"#FF0F0F\" face=\"Verdana\" size=\"5\"><b>- SECURITY ALERT -</b></font><hr width=\"40%\" align=\"left\">

<br><hr width=\"40%\" align=\"left\"><font color=\"#6B6B6B\" face=\"Verdana\" size=\"3\"><b>CBACK CrackerTracker v4</b></font>");

}

//

// Our 2nd Protection Engine: To prevent some DBase Tricks or predefinied Vars

// Little bit paranoid because we set this values later with config.php and overwrite other things

// but you never know.

//

unset($dbname);

unset($dbuser);

unset($dbpasswd);

unset($message);

unset($highlight);

unset($sql);

$ctracker_config = array();

//

// Response Var for System-Check

//

$cresponse200 = 'cbackctr';