codeclinic/check_base64_encoding

## check_base64_encoding
<html><head><title>Find String</title></head><body>
<?php

// upload the file to the root and access the file via a browser.

//It may take time to run so be patient as it will check all the files in the root and the directories in the root

// Most hosting services will have a time limit on how long a php script can run, typically 30 seconds.
// On large sites with a lot of files this script may not be able to find and check all files within the time limit.
// If you get a time out error you can try over riding the default time limits by removing the // in the front of these two lines.

// ini_set('max_execution_time', '0');
// ini_set('set_time_limit', '0');

// if everything runs properly you should see this in the browser - ./your-file-name.php -> contains base64_decode

// if base64 encoding is found you shall see a list of files that contain the obfuscated code

// Please remove the file after running the file as it can be dangerous while on the server

// The code has been taken from http://blog.aw-snap.info/p/simple-script-to-find-base64decode-in.html and for reference refer to the page


find_files('.');

function find_files($seed)
{
    if(! is_dir($seed)) return false;
  $files = array();
  $dirs = array($seed);
  while(NULL !== ($dir = array_pop($dirs)))
        {
        if($dh = opendir($dir))
          {
            while( false !== ($file = readdir($dh)))
              {
                if($file == '.' || $file == '..') continue;
                  $path = $dir . '/' . $file;
                  if(is_dir($path)) {    $dirs[] = $path; }

//  the line below tells the script to only check the content of files with a .php extension.
//  the if{} statement says if you "match" php[\d]?  at the end of the file name then check the contents
//  of the file.  The [\d]? part means also match if there is a digit \d such as .php4 in the file extension

                 //    else { if(preg_match('/\/*\.php[\d]?$/i', $path)) { check_files($path); }}

// 07/26/2011  Based on some recent Pharma hacks I have changed the default to check php, js and txt files
                                else { if(preg_match('/^.*\.(php[\d]?|js|txt)$/i', $path)) { check_files($path); }}

//  if you would like to check other (all) file types you can comment out/un-comment and or modify
//  the following lines as needed.  You can only have one of the else{} statements un-commented.
//  The first example contains a lengthy OR (the | means OR) statement, the part inside the (),
//  (php[\d]?|htm|html|shtml|js|asp|aspx) You can add/remove filetypes by modifying this part
//  (php[\d]?|htm|html|shtml) will only check .php, .htm, .html, .shtml  files.

                 //      else { if(preg_match('/^.*\.(php[\d]?|htm|html|shtml|js|asp|aspx)$/i', $path)) { check_files($path); }}

//  In the next else{} statement there is no if{}, no checking of the file extension every file will be checked.

                 //      else { check_files($path); }   //  will check all file types for the code

                            }
            closedir($dh);
}}}

function check_files($this_file)
{
// the variable $str_to_find is an array that contains the strings to search for inside the single quotes.
//  if you want to search for other strings replace base64_decode with the string you want to search for.

$str_to_find[]='base64_decode';
$str_to_find[]='edoced_46esab'; // base64_decode reversed
$str_to_find[]='preg_replace';
$str_to_find[]='HTTP_REFERER';   //  checks for referrer based conditions
$str_to_find[]='HTTP_USER_AGENT';  //  checks for user agent based conditions

if(!($content = file_get_contents($this_file)))
 { echo("<p>Could not check $this_file You should check the contents manually!</p>\n"); }
 else
     {
         while(list(,$value)=each($str_to_find))
             {
                if (stripos($content, $value) !== false)
                   {
                       echo("<p>$this_file -> contains $value</p>\n");
                    }
               }
        }
  unset($content);
}?>
</body></html>
	<html><head><title>Find String</title></head><body>
	<?php

	// upload the file to the root and access the file via a browser.

	//It may take time to run so be patient as it will check all the files in the root and the directories in the root

	// Most hosting services will have a time limit on how long a php script can run, typically 30 seconds.
	// On large sites with a lot of files this script may not be able to find and check all files within the time limit.
	// If you get a time out error you can try over riding the default time limits by removing the // in the front of these two lines.

	// ini_set('max_execution_time', '0');
	// ini_set('set_time_limit', '0');

	// if everything runs properly you should see this in the browser - ./your-file-name.php -> contains base64_decode

	// if base64 encoding is found you shall see a list of files that contain the obfuscated code

	// Please remove the file after running the file as it can be dangerous while on the server

	// The code has been taken from http://blog.aw-snap.info/p/simple-script-to-find-base64decode-in.html and for reference refer to the page


	find_files('.');

	function find_files($seed)
	{
	if(! is_dir($seed)) return false;
	$files = array();
	$dirs = array($seed);
	while(NULL !== ($dir = array_pop($dirs)))
	{
	if($dh = opendir($dir))
	{
	while( false !== ($file = readdir($dh)))
	{
	if($file == '.' \|\| $file == '..') continue;
	$path = $dir . '/' . $file;
	if(is_dir($path)) { $dirs[] = $path; }

	// the line below tells the script to only check the content of files with a .php extension.
	// the if{} statement says if you "match" php[\d]? at the end of the file name then check the contents
	// of the file. The [\d]? part means also match if there is a digit \d such as .php4 in the file extension

	// else { if(preg_match('/\/*\.php[\d]?$/i', $path)) { check_files($path); }}

	// 07/26/2011 Based on some recent Pharma hacks I have changed the default to check php, js and txt files
	else { if(preg_match('/^.*\.(php[\d]?\|js\|txt)$/i', $path)) { check_files($path); }}

	// if you would like to check other (all) file types you can comment out/un-comment and or modify
	// the following lines as needed. You can only have one of the else{} statements un-commented.
	// The first example contains a lengthy OR (the \| means OR) statement, the part inside the (),
	// (php[\d]?\|htm\|html\|shtml\|js\|asp\|aspx) You can add/remove filetypes by modifying this part
	// (php[\d]?\|htm\|html\|shtml) will only check .php, .htm, .html, .shtml files.

	// else { if(preg_match('/^.*\.(php[\d]?\|htm\|html\|shtml\|js\|asp\|aspx)$/i', $path)) { check_files($path); }}

	// In the next else{} statement there is no if{}, no checking of the file extension every file will be checked.

	// else { check_files($path); } // will check all file types for the code

	}
	closedir($dh);
	}}}

	function check_files($this_file)
	{
	// the variable $str_to_find is an array that contains the strings to search for inside the single quotes.
	// if you want to search for other strings replace base64_decode with the string you want to search for.

	$str_to_find[]='base64_decode';
	$str_to_find[]='edoced_46esab'; // base64_decode reversed
	$str_to_find[]='preg_replace';
	$str_to_find[]='HTTP_REFERER'; // checks for referrer based conditions
	$str_to_find[]='HTTP_USER_AGENT'; // checks for user agent based conditions

	if(!($content = file_get_contents($this_file)))
	{ echo("<p>Could not check $this_file You should check the contents manually!</p>\n"); }
	else
	{
	while(list(,$value)=each($str_to_find))
	{
	if (stripos($content, $value) !== false)
	{
	echo("<p>$this_file -> contains $value</p>\n");
	}
	}
	}
	unset($content);
	}?>
	</body></html>