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['ctracker_whitelist'] = array(
40 'cmd=lostpw' // LinPHA
43 // Attacks we should detect and blok
44 $GLOBALS['ctracker_wormprotector'] = array(
45 'chr(', 'chr=', 'chr%20', '%20chr', 'wget%20', '%20wget', 'wget(',
46 'cmd=', '%20cmd', 'cmd%20', 'rush=', '%20rush', 'rush%20',
47 'union%20', '%20union', 'union(', 'union=', 'echr(', '%20echr', 'echr%20', 'echr=',
48 'esystem(', 'esystem%20', 'cp%20', '%20cp', 'cp(', 'mdir%20', '%20mdir', 'mdir(',
49 'mcd%20', 'mrd%20', 'rm%20', '%20mcd', '%20mrd', '%20rm',
50 'mcd(', 'mrd(', 'rm(', 'mcd=', 'mrd=', 'mv%20', 'rmdir%20', 'mv(', 'rmdir(',
51 'chmod(', 'chmod%20', '%20chmod', 'chmod(', 'chmod=', 'chown%20', 'chgrp%20', 'chown(', 'chgrp(',
52 'locate%20', 'grep%20', 'locate(', 'grep(', 'diff%20', 'kill%20', 'kill(', 'killall',
53 'passwd%20', '%20passwd', 'passwd(', 'telnet%20', 'vi(', 'vi%20', 'cgi-', '.eml',
54 'insert%20into', 'select%20', 'nigga(', '%20nigga', 'nigga%20', 'fopen', 'fwrite', '%20like', 'like%20',
55 '$_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',
70 '=http://', '=https://','=ftp://'
73 // Block these words found in POST requests
74 $GLOBALS['ctracker_post_blacklist'] = array(
75 // These two lines are for detecting hidden link spam in wikis, forums, guestbooks, etc.
76 'div style=', 'overflow:auto', 'height:1px', 'width:1px', 'display:hidden',
77 'overflow: auto', 'height: 1px', 'display: hidden',
78 // "Common" login name from VHCS exploiters ;-)
79 'starhack', 'DeLiMehmet', 'hisset', 'Hisset', 'delimert', 'MecTruy',
84 $GLOBALS['ctracker_header'] = crackerTrackerLoadEmailTemplate('header');
88 function isCrackerTrackerWormDetected () {
89 // Check against the whole list
90 $GLOBALS['ctracker_checkworm'] = str_replace($GLOBALS['ctracker_wormprotector'], '*', crackerTrackerQueryString());
92 // If it differs to original and the *whole* request string is not in whitelist
93 // then blog the attempt
94 return ($GLOBALS['ctracker_checkworm'] != crackerTrackerQueryString() && (!in_array(crackerTrackerQueryString(), $GLOBALS['ctracker_whitelist'])));
98 function isCrackerTrackerPostAttackDetected () {
99 // Implode recursive the whole $_POST array
100 $GLOBALS['ctracker_post_track'] = implode_r('', $_POST);
102 // Check for suspicious POST data
103 $GLOBALS['ctracker_check_post'] = str_replace($GLOBALS['ctracker_post_blacklist'], '*', $GLOBALS['ctracker_post_track']);
106 return ((isCrackerTrackerWormDetected()) || ($GLOBALS['ctracker_check_post'] != $GLOBALS['ctracker_post_track']));
109 // Prepares a mail and send it out
110 function sendCrackerTrackerMail () {
112 $mail = "Attack detected:
113 -----------------------------------------------------
114 Remote-IP : ".determineCrackerTrackerRealRemoteAddress()."
115 User-Agent : ".crackerTrackerUserAgent()."
116 Request-string : ".crackerTrackerQueryString()."
117 Filtered string : ".$GLOBALS['ctracker_checkworm']."
118 Server : ".crackerTrackerServerName()."
119 Script : ".crackerTrackerScriptName()."
120 Referrer : ".crackerTrackerReferer()."
121 -----------------------------------------------------
125 crackerTrackerLogAttack();
128 crackerTrackerSendMail($mail);
134 // Sends the ticket emails out
135 function sendCrackerTrackerTicketMails () {
136 // Load user template
137 $mail = crackerTrackerLoadEmailTemplate('user_add_ticket', $GLOBALS['ctracker_last_ticket']);
139 // Send email to the user
140 crackerTrackerSendMail($mail, $GLOBALS['ctracker_last_ticket']['ctracker_ticket_email'], getCrackerTrackerLocalized('user_add_ticket_subject'));
142 // Load webmaster template
143 $mail = crackerTrackerLoadEmailTemplate('webmaster_add_ticket', $GLOBALS['ctracker_last_ticket'], getCrackerTrackerConfig('ctracker_language'));
145 // Send email to the user
146 crackerTrackerSendMail($mail, null, getCrackerTrackerLocalized('webmaster_add_ticket_subject'));
150 function crackerTrackerSendMail ($mail, $recipient = null, $subject = null) {
151 // Construct dummy array
153 'remote_addr' => determineCrackerTrackerRealRemoteAddress(),
154 'check_worm' => $GLOBALS['ctracker_checkworm'],
155 'server_name' => crackerTrackerServerName()
158 // Only send email if not yet found
159 if (!isCrackerTrackerEntryFound($rowData)) {
160 // Send the email out only in non-debug mode
161 if (isCrackerTrackerDebug()) {
163 print 'Recipient='.$recipient.'<br />Subject='.$subject.'<br />Text=<pre>' . $mail . '</pre>';
167 } elseif (!is_null($recipient)) {
168 // Recipient specified
169 return mail($recipient, $subject, $mail, $GLOBALS['ctracker_header']);
170 } elseif (isset($GLOBALS['ctracker_email'])) {
172 return mail($GLOBALS['ctracker_email'], 'CTracker: Attack detected!', $mail, $GLOBALS['ctracker_header']);
174 // Send it the deprecated way with constant
175 return mail(constant('__CTRACKER_EMAIL'), 'CTracker: Attack detected!', $mail, $GLOBALS['ctracker_header']);
180 // Sends a detected POST attack mail
181 function sendCrackerTrackerPostMail () {
183 $mail = "POST-Attack detected:
184 -----------------------------------------------------
185 Remote-IP : ".determineCrackerTrackerRealRemoteAddress()."
186 User-Agent : ".crackerTrackerUserAgent()."
187 Request-string : ".crackerTrackerQueryString()."
188 Filtered string : ".$GLOBALS['ctracker_checkworm']."
189 Server : ".crackerTrackerServerName()."
190 Script : ".crackerTrackerScriptName()."
191 Referrer : ".crackerTrackerReferer()."
192 -----------------------------------------------------
193 POST string : ".$GLOBALS['ctracker_post_track']."
194 Filtered POST string : ".$GLOBALS['ctracker_check_post']."
195 -----------------------------------------------------
199 crackerTrackerLogAttack();
202 crackerTrackerSendMail($mail);
208 // Sleeps for a random time and aborts the script
209 function crackerTrackerDie () {
210 // Close database link
211 crackerTrackerCloseDatabaseLink();
213 // Sleep a little to waste the attacker's time
214 if (!isCrackerTrackerDebug()) sleep(mt_rand(10,30));
217 if (isCrackerTrackerDebug()) {
218 // With debug backtrace
220 debug_print_backtrace();
228 // Logs the attack attempt
229 function crackerTrackerLogAttack () {
230 // Aquire database link
231 aquireCrackerTrackerDatabaseLink();
233 // By default no proxy is used
236 // Did the attacker use a proxy?
237 if (isCrackerTrackerProxyUsed()) {
242 // Prepare array for database insert
244 'remote_addr' => determineCrackerTrackerRealRemoteAddress(),
245 'user_agent' => crackerTrackerUserAgent(),
246 'get_data' => crackerTrackerQueryString(),
247 'post_data' => $GLOBALS['ctracker_post_track'],
248 'check_worm' => $GLOBALS['ctracker_checkworm'],
249 'check_post' => $GLOBALS['ctracker_check_post'],
250 'server_name' => crackerTrackerServerName(),
251 'script_name' => crackerTrackerScriptName(),
252 'referer' => crackerTrackerReferer(),
253 'proxy_used' => $proxyUsed
256 // Insert the array in database
257 crackerTrackerInsertArray($rowData);
260 // Alerts the current user about malicious/suspicious traffic
261 function crackerTrackerAlertCurrentUser () {
262 // Is there some data?
263 if (isset($GLOBALS['ctracker_last_suspicious_entry'])) {
264 // Does the user have a ticket?
265 if (ifCrackerTrackerIpHasTicket()) {
266 // Should we continue?
267 if (isset($_POST['ctracker_continue'])) {
269 sendCrackerTrackerCookie();
271 // And redirect to same URL
272 crackerTrackerRedirectSameUrl();
273 } elseif (ifCrackerTrackerCookieIsSet()) {
274 // Return here to normal program
277 // Load "Thank you" template
278 crackerTrackerLoadTemplate('add_ticket_thanks');
280 } elseif (isset($_POST['ctracker_add_ticket'])) {
282 addCrackerTrackerTicket($_POST);
284 // Send the email out
285 sendCrackerTrackerTicketMails();
287 // Display the form for new ticket
288 crackerTrackerLoadTemplate('add_ticket');