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IT Security and Insecurity Portal www.waraxe.us Forum Index -> PHP script decode requests -> Need help decoding    View previous topic :: View next topic  Need help decoding Posted: Sun Apr 25, 2010 8:41 pm fux0r360 Active user   Joined: Apr 25, 2010 Posts: 25 I dont know what happened with the last one I did but thanks for the help. Can someone explain the process AFTER the first Base64 encoding? Here is the original footer.php: Code: <?php /* WARNING: This file is protected by copyright law. To reverse engineer or decode this file is strictly prohibited. */ $o="QAAADjsmKionYWhoc2J1J1RzZgAgdXN0JyoqOQoNJwAQO2NucScAA2RrZnR0OiVhbn8lOTsoASAB0EwSDgGibmMBcAOiKmhycyUBj3UlA+VwEAB1ZncCEg4KDQ4ODjt3OSFkaAAAd348Jzs4d293J2Jkb2gnYwAIZnNiLyBeIC48Jzg5AZRla2gCoGBuaWFoLwFSKQFkWAKARmtrJ1UQAG5gbwsAVWJ0YnVxYmMpJ0NiAAR0bmBpYmMnZX4gKyBwCcBvYhAAamJ0BTM7ZidvdWJhOiVvc3MAAHc9KChwcHApamZgYmlzaHOBAgJyfSlkaGooATQqc2Jqd2sJMHRAACgCMGJ1Zmsqd3J1d2h0YiglASI5RWJ0cydKA8MnUwKVOyhmEiB3+PEQgA5QErcTRhaoQmljFoQREAK1EMNwd1gY84AQD0MKDQoNOyhlaGN+BYA7KG9zAABqazk=";eval(base64_decode("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"));return;?> Using a 64 encoder I get the following: Code: @��;&**'ahhsbu'Tsf� ust'**9 '�;cnq'�dkftt:%an%9;( �L �nc p�*hrs% �u%�p�ufw ;w9!dh��w~<';8wow'bdoh'c�fsb/ ^ .<'89 �ekh�`niah/ R) dX�Fkk'U�n`o�Ubtbuqbc)'Cb�tn`ibc'e~ + p   �ob�jbt3;f'ouba:%oss��w=((ppp)jf`bishs�r})dhj( 4*sbjwk   0t@�(0bufk*wruwhtb(% "9Ebts'J�'S�;(f w���P�F�Bic���pwX�C ;(ehc~�;(os��jk9 and Code: $lll=0;eval(base64_decode("JGxsbGxsbGxsbGxsPSdiYXNlNjRfZGVjb2RlJzs="));$ll=0;eval($lllllllllll("JGxsbGxsbGxsbGw9J29yZCc7"));$llll=0;$lllll=3;eval($lllllllllll("JGw9JGxsbGxsbGxsbGxsKCRvKTs="));$lllllll=0;$llllll=($llllllllll($l[1])<<8)+$llllllllll($l[2]);eval($lllllllllll("JGxsbGxsbGxsbGxsbGw9J3N0cmxlbic7"));$lllllllll=16;$llllllll="";for(;$lllll<$lllllllllllll($l);){if($lllllllll==0){$llllll=($llllllllll($l[$lllll++])<<8);$llllll+=$llllllllll($l[$lllll++]);$lllllllll=16;}if($llllll&0x8000){$lll=($llllllllll($l[$lllll++])<<4);$lll+=($llllllllll($l[$lllll])>>4);if($lll){$ll=($llllllllll($l[$lllll++])&0x0f)+3;for($llll=0;$llll<$ll;$llll++)$llllllll[$lllllll+$llll]=$llllllll[$lllllll-$lll+$llll];$lllllll+=$ll;}else{$ll=($llllllllll($l[$lllll++])<<8);$ll+=$llllllllll($l[$lllll++])+16;for($llll=0;$llll<$ll;$llllllll[$lllllll+$llll++]=$llllllllll($l[$lllll]));$lllll++;$lllllll+=$ll;}}else$llllllll[$lllllll++]=$llllllllll($l[$lllll++]);$llllll<<=1;$lllllllll--;}eval($lllllllllll("JGxsbGxsbGxsbGxsbD0nY2hyJzs="));$lllll=0;eval($lllllllllll("JGxsbGxsbGxsbD0iPyIuJGxsbGxsbGxsbGxsbCg2Mik7"));$llllllllll="";for(;$lllll<$lllllll;){$llllllllll.=$llllllllllll($llllllll[$lllll++]^0x07);}eval($lllllllllll("JGxsbGxsbGxsbC49JGxsbGxsbGxsbGwuJGxsbGxsbGxsbGxsbCg2MCkuIj8iOw=="));eval($lllllllll); It is from here, that I am stuck If its too much of a hassle to explain I understand and thanks for the help. Have a great day Posted: Sun Apr 25, 2010 8:55 pm vince213333 Advanced user   Joined: Aug 03, 2009 Posts: 737 Location: Belgium Code: Code: <!-- footer Starts -->     <div class="fix"></div>     <div id="footer-out">     <div id="footer" class="wrap">                       <p>&copy; <?php echo date('Y'); ?> <?php bloginfo(); ?>. <?php _e('All Rights Reserved. Designed by','woothemes'); ?><a href="http://www.magentothemesz.com/magento-templates/general-purpose/">Best Magento Templates</a></p>     </div>     </div>     <!-- footer Ends -->       </div> <?php wp_footer(); ?> </body> </html> You were almost there You shouldn't decode the $o string though. Just gotta follow the PHP code you get by decoding the second string. The easiest way is to simply change the last eval() into highlight_string(). If you'd decode the file manually you'd see the variables change until you get to that last eval(), which actually displays the page. So a simple highlight_string() would reveal the PHP code Posted: Sun Apr 25, 2010 9:24 pm fux0r360 Active user   Joined: Apr 25, 2010 Posts: 25 Thanks for the explanaition Im at the code decoder stage right now and do not understand the strings well enough to try to manually do it Posted: Sun Apr 25, 2010 9:56 pm vince213333 Advanced user   Joined: Aug 03, 2009 Posts: 737 Location: Belgium It's a bit confusing with the different 11... variables, I admit But that's the intention of the creaters of this encoding scheme, to make it harder to decode Posted: Mon Apr 26, 2010 8:20 pm fux0r360 Active user   Joined: Apr 25, 2010 Posts: 25 Can someone point me to some good reads? Posted: Mon Apr 26, 2010 8:29 pm vince213333 Advanced user   Joined: Aug 03, 2009 Posts: 737 Location: Belgium 1. Basic PHP knowledge (google) 2. eval() 3. base64_decode() & base64_encode() 4. highlight_string() is about all you need Need help decoding   www.waraxe.us Forum Index -> PHP script decode requests You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum All times are GMT   Page 1 of 1   All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First  Select a forum Security Research by waraxe----------------General discussionHow to fixMetasploit related Hash cracking requests----------------MD5 hashesAll other hashesHash related information http://www.waraxe.us portal----------------SuggestionsCooperation proposals Security bugs and issues in general----------------Newbies cornerSql injectionCross-site scripting aka XSSRemote file inclusionFull path disclosureShell commands injectionPhishing and Social EngineeringAll other security holes Various software----------------PhpNukePostNukePhpBBXMB forumvBulletin BoardInvision Power Boarde107MamboJoomlaXOOPSM$ WindowsLinux worldAll other softwareCoppermine Photo Gallery Programming languages----------------PhpMySqlPerlJavaJavascriptC and C++Visual BasicBorland Delphi and PascalPythonHTML and XMLAssembler Reverse engineering----------------Newbies cornerDisassemblingPHP script decode requests Miscellaneous stuff----------------Future of the ITNanotechnologyFun cornerLinksTry2hack sitesProxy database Direct Downloads----------------ToolsTutorialsWordlists Recycle Bin----------------Removed messagesOutdated posts   Powered by phpBB © 2001-2008 phpBB Group

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