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 block
44 $GLOBALS['ctracker_get_blacklist'] = array(
45 'chr(', 'chr=', 'chr%20', '%20chr', 'wget%20', '%20wget', 'wget(',
46 'cmd=', '%20cmd', 'cmd%20', 'rush=', '%20rush', 'rush%20',
47 'union%20', '%20union', 'union(', 'union=', 'echr(', '%20echr', 'echr%20', 'echr=',
48 'esystem(', 'esystem%20', 'cp%20', '%20cp', 'cp(', 'mdir%20', '%20mdir', 'mdir(',
49 'mcd%20', 'mrd%20', 'rm%20', '%20mcd', '%20mrd', '%20rm',
50 'mcd(', 'mrd(', 'rm(', 'mcd=', 'mrd=', 'mv%20', 'rmdir%20', 'mv(', 'rmdir(',
51 'chmod(', 'chmod%20', '%20chmod', 'chmod(', 'chmod=', 'chown%20', 'chgrp%20', 'chown(', 'chgrp(',
52 'locate%20', 'grep%20', 'locate(', 'grep(', 'diff%20', 'kill%20', 'kill(', 'killall',
53 'passwd%20', '%20passwd', 'passwd(', 'telnet%20', 'vi(', 'vi%20', 'cgi-', '.eml',
54 'insert%20into', 'select%20', 'nigga(', '%20nigga', 'nigga%20', 'fopen', 'fwrite', '%20like', 'like%20',
55 '$_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-', 'uname%20-', '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',
70 'uol.com', '=http://', '=https://','=ftp://','=file://','_SESSION','CFG_ROOT','/proc/',',0x5'
73 // Block these words found in POST requests
74 $GLOBALS['ctracker_post_blacklist'] = array(
75 // This line is for detecting hidden link spam in wikis, forums, guestbooks, etc.
76 'div style=', 'overflow:auto', 'height:1px', 'width:1px', 'display:hidden',
77 // "Common" login name from VHCS exploiters ;-)
78 'starhack', 'DeLiMehmet', 'hisset', 'Hisset', 'delimert', 'MecTruy',
83 $GLOBALS['ctracker_header'] = crackerTrackerLoadEmailTemplate('header');
87 function isCrackerTrackerWormDetected () {
88 // Check against the whole list
89 $GLOBALS['ctracker_checkworm'] = str_replace($GLOBALS['ctracker_get_blacklist'], '*', crackerTrackerQueryString());
91 // If it differs to original and the *whole* request string is not in whitelist
92 // then blog the attempt
93 return ($GLOBALS['ctracker_checkworm'] != crackerTrackerQueryString() && (!in_array(crackerTrackerQueryString(), $GLOBALS['ctracker_whitelist'])));
97 function isCrackerTrackerPostAttackDetected () {
98 // Implode recursive the whole $_POST array
99 $GLOBALS['ctracker_post_track'] = implode_r('', $_POST);
101 // Check for suspicious POST data
102 $GLOBALS['ctracker_check_post'] = str_replace($GLOBALS['ctracker_post_blacklist'], '*', $GLOBALS['ctracker_post_track']);
105 return ((isCrackerTrackerWormDetected()) || ($GLOBALS['ctracker_check_post'] != $GLOBALS['ctracker_post_track']));
108 // Prepares a mail and send it out
109 function sendCrackerTrackerMail () {
111 crackerTrackerLogAttack();
114 $mail = "Attack detected:
115 -----------------------------------------------------
116 Remote-IP : ".determineCrackerTrackerRealRemoteAddress()."
117 User-Agent : ".crackerTrackerUserAgent()."
118 Request-string : ".crackerTrackerQueryString()."
119 Filtered string : ".$GLOBALS['ctracker_checkworm']."
120 Server : ".crackerTrackerServerName()."
121 Script : ".crackerTrackerScriptName()."
122 Referrer : ".crackerTrackerReferer()."
123 -----------------------------------------------------
127 crackerTrackerSendMail($mail);
133 // Sends the ticket emails out
134 function sendCrackerTrackerTicketMails () {
135 // Load user template
136 $mail = crackerTrackerLoadEmailTemplate('user_add_ticket', $GLOBALS['ctracker_last_ticket']);
138 // Send email to the user
139 crackerTrackerSendMail($mail, $GLOBALS['ctracker_last_ticket']['ctracker_ticket_email'], getCrackerTrackerLocalized('user_add_ticket_subject'));
141 // Load webmaster template
142 $mail = crackerTrackerLoadEmailTemplate('webmaster_add_ticket', $GLOBALS['ctracker_last_ticket'], getCrackerTrackerConfig('ctracker_language'));
144 // Send email to the user
145 crackerTrackerSendMail($mail, null, getCrackerTrackerLocalized('webmaster_add_ticket_subject'));
149 function crackerTrackerSendMail ($mail, $recipient = null, $subject = null) {
150 // Construct dummy array
152 'remote_addr' => determineCrackerTrackerRealRemoteAddress(),
153 'check_worm' => $GLOBALS['ctracker_checkworm'],
154 'server_name' => crackerTrackerServerName()
157 // Only send email if not yet found
158 if (!isCrackerTrackerEntryFound($rowData)) {
159 // Send the email out only in non-debug mode
160 if (isCrackerTrackerDebug()) {
162 print 'Recipient=' . $recipient . '<br />Subject=' . $subject . '<br />Text=<pre>' . $mail . '</pre>';
166 } elseif (!is_null($recipient)) {
167 // Recipient specified
168 return mail($recipient, $subject, $mail, $GLOBALS['ctracker_header']);
169 } elseif (isset($GLOBALS['ctracker_email'])) {
171 return mail($GLOBALS['ctracker_email'], 'CTracker: Attack detected!', $mail, $GLOBALS['ctracker_header']);
173 // Send it the deprecated way with constant
174 return mail(constant('__CTRACKER_EMAIL'), 'CTracker: Attack detected!', $mail, $GLOBALS['ctracker_header']);
176 } elseif (isCrackerTrackerDebug()) {
178 print 'Recipient=' . $recipient . '<br />Subject=' . $subject . '<br />Text=<pre>' . $mail . '</pre>';
185 // Sends a detected POST attack mail
186 function sendCrackerTrackerPostMail () {
188 crackerTrackerLogAttack();
191 $mail = "POST-Attack detected:
192 -----------------------------------------------------
193 Remote-IP : ".determineCrackerTrackerRealRemoteAddress()."
194 User-Agent : ".crackerTrackerUserAgent()."
195 Request-string : ".crackerTrackerQueryString()."
196 Filtered string : ".$GLOBALS['ctracker_checkworm']."
197 Server : ".crackerTrackerServerName()."
198 Script : ".crackerTrackerScriptName()."
199 Referrer : ".crackerTrackerReferer()."
200 -----------------------------------------------------
201 POST string : ".$GLOBALS['ctracker_post_track']."
202 Filtered POST string : ".$GLOBALS['ctracker_check_post']."
203 -----------------------------------------------------
207 crackerTrackerSendMail($mail);
213 // Sleeps for a random time and aborts the script
214 function crackerTrackerDie () {
215 // Close database link
216 crackerTrackerCloseDatabaseLink();
218 // Do only sleep if debug/developer mode is not enabled
219 if (!isCrackerTrackerDebug()) {
220 // Sleep a little to waste the attacker's time
221 sleep(mt_rand(10,30));
225 if (isCrackerTrackerDebug()) {
226 // With debug backtrace in debug/developer mode
228 debug_print_backtrace();
236 // Logs the attack attempt
237 function crackerTrackerLogAttack () {
238 // Aquire database link
239 aquireCrackerTrackerDatabaseLink();
241 // By default no proxy is used
244 // Did the attacker use a proxy?
245 if (isCrackerTrackerProxyUsed()) {
250 // Prepare array for database insert
252 'remote_addr' => determineCrackerTrackerRealRemoteAddress(),
253 'user_agent' => crackerTrackerUserAgent(),
254 'get_data' => crackerTrackerQueryString(),
255 'post_data' => $GLOBALS['ctracker_post_track'],
256 'check_worm' => $GLOBALS['ctracker_checkworm'],
257 'check_post' => $GLOBALS['ctracker_check_post'],
258 'server_name' => crackerTrackerServerName(),
259 'script_name' => crackerTrackerScriptName(),
260 'referer' => crackerTrackerReferer(),
261 'proxy_used' => $proxyUsed,
262 'first_attempt' => 'NOW()'
265 // Insert the array in database
266 crackerTrackerInsertArray('ctracker_data', $rowData);
269 // Alerts the current user about malicious/suspicious traffic
270 function crackerTrackerAlertCurrentUser () {
271 // Is there some data?
272 if (isset($GLOBALS['ctracker_last_suspicious_entry'])) {
273 // Does the user have a ticket?
274 if (ifCrackerTrackerIpHasTicket()) {
275 // Should we continue?
276 if (isset($_POST['ctracker_continue'])) {
278 sendCrackerTrackerCookie();
280 // And redirect to same URL
281 crackerTrackerRedirectSameUrl();
282 } elseif (ifCrackerTrackerCookieIsSet()) {
283 // Return here to normal program
286 // Load "Thank you" template
287 crackerTrackerLoadTemplate('add_ticket_thanks');
289 } elseif ((isset($_POST['ctracker_add_ticket'])) && (!empty($_POST['name'])) && (!empty($_POST['email']))) {
291 addCrackerTrackerTicket($_POST);
293 // Send the email out
294 sendCrackerTrackerTicketMails();
296 // Display the form for new ticket
297 crackerTrackerLoadTemplate('add_ticket');