5 * @author Roland Haeder <webmaster@ship-simu.org>
7 * @copyright Copyright (c) 2009 Cracker Tracker Team
8 * @license GNU GPL 3.0 or any newer version
9 * @link http://www.ship-simu.org
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 // Initializes all detector arrays
26 function initCrackerTrackerArrays () {
27 // Set error_reporting
28 if (isCrackerTrackerDebug()) {
29 // For debugging purposes, this is fine
30 @error_reporting(E_ALL, E_STRICT);
36 // Whitelist some absolute query strings (see below)
37 $GLOBALS['whitelist'] = array(
40 'cmd=lostpw' // LinPHA
43 // Attacks we should detect and blok
44 $GLOBALS['wormprotector'] = array(
45 'chr(', 'chr=', 'chr%20', '%20chr', 'wget%20', '%20wget', 'wget(',
46 'cmd=', '%20cmd', 'cmd%20', 'rush=', '%20rush', 'rush%20',
47 'union%20', '%20union', 'union(', 'union=', 'echr(', '%20echr', 'echr%20', 'echr=',
48 'esystem(', 'esystem%20', 'cp%20', '%20cp', 'cp(', 'mdir%20', '%20mdir', 'mdir(',
49 'mcd%20', 'mrd%20', 'rm%20', '%20mcd', '%20mrd', '%20rm',
50 'mcd(', 'mrd(', 'rm(', 'mcd=', 'mrd=', 'mv%20', 'rmdir%20', 'mv(', 'rmdir(',
51 'chmod(', 'chmod%20', '%20chmod', 'chmod(', 'chmod=', 'chown%20', 'chgrp%20', 'chown(', 'chgrp(',
52 'locate%20', 'grep%20', 'locate(', 'grep(', 'diff%20', 'kill%20', 'kill(', 'killall',
53 'passwd%20', '%20passwd', 'passwd(', 'telnet%20', 'vi(', 'vi%20', 'cgi-', '.eml',
54 'insert%20into', 'select%20', 'nigga(', '%20nigga', 'nigga%20', 'fopen', 'fwrite', '%20like', 'like%20',
55 '$_request', '$_get', '$request', '$get', '.system', 'HTTP_PHP', '&aim', '%20getenv', 'getenv%20',
56 'new_password', '&icq','/etc/passwd','/etc/shadow', '/etc/groups', '/etc/gshadow',
57 'HTTP_USER_AGENT', 'HTTP_HOST', 'wget%20', 'uname\x20-a', 'bin/id', '/bin/', '/chgrp',
58 '/chown', '/usr/bin', 'g\+\+', 'bin/python', 'bin/tclsh', 'bin/nasm', 'perl%20', 'traceroute%20',
59 'ping%20', '.pl', 'bin/xterm', 'lsof%20', '.conf', 'motd%20', 'HTTP/1.', '.inc.php', '.lib.php',
60 'config.php', 'file\://', 'window.open', '<SCRIPT>', 'javascript\://', 'img src', 'img%20src', '.jsp',
61 'ftp.exe', 'xp_enumdsn', 'xp_availablemedia', 'xp_filelist', 'xp_cmdshell', 'nc.exe', '.htpasswd',
62 'servlet', '/etc/passwd', 'wwwacl', '~root', '~ftp', '.js', '.jsp', '.history', 'bash_history',
63 '.bash_history', '~nobody', 'server-info', 'server-status', 'reboot%20', 'halt%20',
64 'powerdown%20', '/home/ftp', '/home/www', 'secure_site, ok', 'chunked', 'org.apache', '/servlet/con',
65 '<script', '/robot.txt' ,'/perl' ,'mod_gzip_status', 'db_mysql.inc', '.inc', 'select%20from',
66 'select from', 'drop%20', '.system', 'getenv', 'http_', '_php', 'php_', 'phpinfo()', '\<?php', '?\>', 'sql=',
67 'div style=', 'overflow: auto', 'height: 1px', 'cc%20', 'admin_action=', 'path=', 'action=http',
68 'page=http', 'module=http', 'op=http', 'id=http', 'id%3Dhttp', 'action%3Dhttp', 'page%3Dhttp',
69 'module%3Dhttp', 'op%3Dhttp', 'starhack', '../../', 'directory=http', 'dir=http', 'busca', 'uol.com'
72 // Block these words found in POST requests
73 $GLOBALS['post_blacklist'] = array(
74 // These two lines are for detecting hidden link spam in wikis, forums, guestbooks, etc.
75 'div style=', 'overflow:auto', 'height:1px', 'width:1px', 'display:hidden',
76 'overflow: auto', 'height: 1px', 'display: hidden',
77 // "Common" login name from VHCS exploiters ;-)
78 'starhack', 'DeLiMehmet', 'hisset', 'Hisset', 'delimert', 'MecTruy',
84 function isCrackerTrackerWormDetected () {
85 // Check against the whole list
86 $GLOBALS['checkworm'] = str_replace($GLOBALS['wormprotector'], '*', $_SERVER['QUERY_STRING']);
88 // If it differs to original and the *whole* request string is not in whitelist
89 // then blog the attempt
90 return ($GLOBALS['checkworm'] != $_SERVER['QUERY_STRING'] && (!in_array($_SERVER['QUERY_STRING'], $GLOBALS['whitelist'])));
94 function isCrackerTrackerPostAttackDetected () {
95 // Implode recursive the whole $_POST array
96 $GLOBALS['post_track'] = implode_r('', $_POST);
98 // Check for suspicious POST data
99 $GLOBALS['check_post'] = str_replace($GLOBALS['post_blacklist'], '*', $GLOBALS['post_track']);
102 return ((isCrackerTrackerWormDetected()) || ($GLOBALS['check_post'] != $GLOBALS['post_track']));
105 // Prepares a mail and send it out
106 function sendCrackerTrackerMail () {
108 $mail = "Attack detected:
109 -----------------------------------------------------
110 Remote-IP: ".$_SERVER['REMOTE_ADDR']."
111 User-Agent: ".$_SERVER['HTTP_USER_AGENT']."
112 Request-string: ".$_SERVER['QUERY_STRING']."
113 Filtered string: ".$GLOBALS['checkworm']."
114 Server: ".$_SERVER['SERVER_NAME']."
115 Script: ".$_SERVER['SCRIPT_NAME']."
116 Referrer: ".$_SERVER['HTTP_REFERRER']."
117 -----------------------------------------------------
121 crackerTrackerLogAttack();
124 crackerTrackerSendMail($mail);
131 function crackerTrackerSendMail ($mail) {
132 // Construct dummy array
134 'remote_addr' => $_SERVER['REMOTE_ADDR'],
135 'check_worm' => $GLOBALS['checkworm']
138 // Only send email if not yet found
139 if (!isCrackerTrackerEntryFound($rowData)) {
140 // Send the email out only in non-debug mode
141 if (isCrackerTrackerDebug()) {
143 print '<pre>' . $mail . '</pre>';
149 return mail(constant('__CTRACKER_EMAIL'), 'CTracker: Attack detected!', $mail, 'From: ctracker@mxchange.org');
154 // Sends a detected POST attack mail
155 function sendCrackerTrackerPostMail () {
157 $mail = "POST-Attack detected:
158 -----------------------------------------------------
159 Remote-IP: ".$_SERVER['REMOTE_ADDR']."
160 User-Agent: ".$_SERVER['HTTP_USER_AGENT']."
161 POST string: ".$GLOBALS['post_track']."
162 Filtered worm string: ".$GLOBALS['checkworm']."
163 Filtered POST string: ".$GLOBALS['check_post']."
164 Server: ".$_SERVER['SERVER_NAME']."
165 Script: ".$_SERVER['SCRIPT_NAME']."
166 -----------------------------------------------------
170 crackerTrackerLogAttack();
173 crackerTrackerSendMail($mail);
179 // Sleeps for a random time and aborts the script
180 function crackerTrackerDie () {
181 // Close database link
182 crackerTrackerCloseDatabaseLink();
184 // Sleep a little to waste the attacker's time
185 if (!isCrackerTrackerDebug()) sleep(mt_rand(10,30));
191 // Logs the attack attempt
192 function crackerTrackerLogAttack () {
193 // Aquire database link
194 aquireCrackerTrackerDatabaseLink();
197 // Prepare array for database insert
199 'remote_addr' => $_SERVER['REMOTE_ADDR'],
200 'user_agent' => $_SERVER['HTTP_USER_AGENT'],
201 'post_data' => $GLOBALS['post_track'],
202 'check_worm' => $GLOBALS['checkworm'],
203 'check_post' => $GLOBALS['check_post'],
204 'server_name' => $_SERVER['SERVER_NAME'],
205 'script_name' => $_SERVER['SCRIPT_NAME'],
206 'referer' => $_SERVER['HTTP_REFERER']
209 // Insert the array in database
210 crackerTrackerInsertArray($rowData);