php网站被挂木马后的修复方法总结
这篇文章主要介绍了php网站被挂木马后的修复方法,总结分析了Linux与Windows系统上木马的查杀方法,并给出了一个完整的木马查找工具实例,需要的朋友可以参考下
本文实例总结了php网站被挂木马后的修复方法。分享给大家供大家参考。具体方法如下：
在linux中我们可以使用命令来搜查木马文件,到代码安装目录执行下面命令
find ./ -iname "*.php" | xargs grep -H -n "eval(base64_decode"
搜出来接近100条结果，这个结果列表很重要，木马都在里面，要一个一个文件打开验证是否是木马，如果是，马上删除掉
最后找到10个木马文件，存放在各种目录，都是php webshell，功能很齐全，用base64编码
如果你在windows中查找目录直接使用windows文件搜索就可以了，可以搜索eval或最近修改文件，然后如果是dedecms我们要查看最新dedecms漏洞呀然后修补。
下面给个php木马查找工具,直接放到你站点根目录
<?php /**************PHP Web木马扫描器************************/ /* [+] 作者: alibaba */ /* [+] MSN: [email protected] */ /* [+] 首发: t00ls.net , 转载请注明t00ls */ /* [+] 版本: v1.0 */ /* [+] 功能: web版php木马扫描工具*/ /* [+] 注意: 扫描出来的文件并不一定就是后门, */ /* 请自行判断、审核、对比原文件。*/ /* 如果你不确定扫出来的文件是否为后门，*/ /* 欢迎你把该文件发给我进行分析。*/ /*******************************************************/ ob_start(); set_time_limit(0); $username = "t00ls"; //设置用户名 $password = "t00ls"; //设置密码 $md5 = md5(md5($username).md5($password)); $version = "PHP Web木马扫描器v1.0"; PHP Web 木马扫描器 $realpath = realpath('./'); $selfpath = $_SERVER['PHP_SELF']; $selfpath = substr($selfpath, 0, strrpos($selfpath,'/')); define('REALPATH', str_replace('//','/',str_replace('\','/',substr($realpath, 0, strlen($realpath) - strlen($selfpath))))); define('MYFILE', basename(__FILE__)); define('MYPATH', str_replace('\', '/', dirname(__FILE__)).'/'); define('MYFULLPATH', str_replace('\', '/', (__FILE__))); define('HOST', "http://".$_SERVER['HTTP_HOST']); ?> <html> <head> <title><?php echo $version?></title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <style> body{margin:0px;} body,td{font: 12px Arial,Tahoma;line-height: 16px;} a {color: #00f;text-decoration:underline;} a:hover{color: #f00;text-decoration:none;} .alt1 td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#f1f1f1;padding:5px 10px 5px 5px;} .alt2 td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#f9f9f9;padding:5px 10px 5px 5px;} .focus td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#ffffaa;padding:5px 10px 5px 5px;} .head td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#e9e9e9;padding:5px 10px 5px 5px;font-weight:bold;} .head td span{font-weight:normal;} </style> </head> <body> <?php if(!(isset($_COOKIE['t00ls']) && $_COOKIE['t00ls'] == $md5) && !(isset($_POST['username']) && isset($_POST['password']) && (md5(md5($_POST['username']).md5($_POST['password']))==$md5))) { echo '<form id="frmlogin" name="frmlogin" method="post" action="">用户名: <input type="text" name="username" id="username" /> 密码: <input type="password" name="password" id="password" /> <input type="submit" name="btnLogin" id="btnLogin" value="登陆" /></form>'; } elseif(isset($_POST['username']) && isset($_POST['password']) && (md5(md5($_POST['username']).md5($_POST['password']))==$md5)) { setcookie("t00ls", $md5, time()+60*60*24*365,"/"); echo "登陆成功！"; header( 'refresh: 1; url='.MYFILE.'?action=scan' ); exit(); } else { setcookie("t00ls", $md5, time()+60*60*24*365,"/"); $setting = getSetting(); $action = isset($_GET['action'])?$_GET['action']:""; if($action=="logout") { setcookie ("t00ls", "", time() - 3600); Header("Location: ".MYFILE); exit(); } if($action=="download" && isset($_GET['file']) && trim($_GET['file'])!="") { $file = $_GET['file']; ob_clean(); if (@file_exists($file)) { header("Content-type: application/octet-stream"); header("Content-Disposition: filename="".basename($file)."""); echo file_get_contents($file); } exit(); } ?> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tbody><tr class="head"> <td><?php echo $_SERVER['SERVER_ADDR']?><span style="float: right; font-weight:bold;"><?php echo "<a href='http://www.t00ls.net/'>$version</a>"?></span></td> </tr> <tr class="alt1"> <td><span style="float: right;"><?=date("Y-m-d H:i:s",mktime())?></span> <a href="?action=scan">扫描</a> | <a href="?action=setting">设定</a> | <a href="?action=logout">登出</a> </td> </tr> </tbody></table> <br> <?php if($action=="setting") { if(isset($_POST['btnsetting'])) { $Ssetting = array(); $Ssetting['user']=isset($_POST['checkuser'])?$_POST['checkuser']:"php | php? | phtml"; $Ssetting['all']=isset($_POST['checkall'])&&$_POST['checkall']=="on"?1:0; $Ssetting['hta']=isset($_POST['checkhta'])&&$_POST['checkhta']=="on"?1:0; setcookie("t00ls_s", base64_encode(serialize($Ssetting)), time()+60*60*24*365,"/"); echo "设置完成！"; header( 'refresh: 1; url='.MYFILE.'?action=setting' ); exit(); } ?> <form name="frmSetting" method="post" action="?action=setting"> <FIELDSET style="width:400px"> <LEGEND>扫描设定</LEGEND> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="60">文件后缀:</td> <td width="300"><input type="text" name="checkuser" id="checkuser" style="width:300px;" value="<?php echo $setting['user']?>"></td> </tr> <tr> <td><label for="checkall">所有文件</label></td> <td><input type="checkbox" name="checkall" id="checkall" <?php if($setting['all']==1) echo "checked"?>></td> </tr> <tr> <td><label for="checkhta">设置文件</label></td> <td><input type="checkbox" name="checkhta" id="checkhta" <?php if($setting['hta']==1) echo "checked"?>></td> </tr> <tr> <td> </td> <td> <input type="submit" name="btnsetting" id="btnsetting" value="提交"> </td> </tr> </table> </fieldset> </form> <?php } else { $dir = isset($_POST['path'])?$_POST['path']:MYPATH; $dir = substr($dir,-1)!="/"?$dir."/":$dir; ?> <form name="frmScan" method="post" action=""> <table width="100%%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="35" style="vertical-align:middle; padding-left:5px;">扫描路径:</td> <td width="690"> <input type="text" name="path" id="path" style="width:600px" value="<?php echo $dir?>"> <input type="submit" name="btnScan" id="btnScan" value="开始扫描"></td> </tr> </table(www.jb51.net)> </form> <?php if(isset($_POST['btnScan'])) { $start=mktime(); $is_user = array(); $is_ext = ""; $list = ""; if(trim($setting['user'])!="") { $is_user = explode("|",$setting['user']); if(count($is_user)>0) { foreach($is_user as $key=>$value) $is_user[$key]=trim(str_replace("?","(.)",$value)); $is_ext = "(.".implode("($|.))|(.",$is_user)."($|.))"; } } if($setting['hta']==1) { $is_hta=1; $is_ext = strlen($is_ext)>0?$is_ext."|":$is_ext; $is_ext.="(^.htaccess$)"; } if($setting['all']==1 || (strlen($is_ext)==0 && $setting['hta']==0)) { $is_ext="(.+)"; } $php_code = getCode(); if(!is_readable($dir)) $dir = MYPATH; $count=$scanned=0; scan($dir,$is_ext); $end=mktime(); $spent = ($end - $start); ?> <div style="padding:10px; background-color:#ccc">扫描: <?php echo $scanned?> 文件| 发现: <?php echo $count?> 可疑文件| 耗时: <?php echo $spent?> 秒</div> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr class="head"> <td width="15" align="center">No.</td> <td width="48%">文件</td> <td width="12%">更新时间</td> <td width="10%">原因</td> <td width="20%">特征</td> <td>动作</td> </tr> <?php echo $list?> </table> <?php } } } ob_flush(); ?> </body> </html> <?php function scan($path = '.',$is_ext){ global $php_code,$count,$scanned,$list; $ignore = array('.', '..' ); $replace=array(" ","n","r","t"); $dh = @opendir( $path );while(false!==($file=readdir($dh))){ if( !in_array( $file, $ignore ) ){ if( is_dir( "$path$file" ) ){ scan("$path$file/",$is_ext); } else { $current = $path.$file; if(MYFULLPATH==$current) continue; if(!preg_match("/$is_ext/i",$file)) continue; if(is_readable($current)) { $scanned++; $content=file_get_contents($current); $content= str_replace($replace,"",$content); foreach($php_code as $key => $value) { if(preg_match("/$value/i",$content)) { $count++; $j = $count % 2 + 1; $filetime = date('Y-m-d H:i:s',filemtime($current)); $reason = explode("->",$key); $url = str_replace(REALPATH,HOST,$current); preg_match("/$value/i",$content,$arr); $list.=" <tr class='alt$j' onmouseover='this.className="focus";' onmouseout='this.className="alt$j";'> <td>$count</td> <td><a href='$url' target='_blank'>$current</a></td> <td>$filetime</td> <td><font color=red>$reason[0]</font></td> <td><font color=#090>$reason[1]</font></td> <td><a href='?action=download&file=$current' target='_blank'>下载</a></td> </tr>"; //echo $key . "-" . $path . $file ."(" . $arr[0] . ")" ."<br />"; //echo $path . $file ."<br />"; break; } } } } } } closedir( $dh ); } function getSetting() { $Ssetting = array(); if(isset($_COOKIE['t00ls_s'])) { $Ssetting = unserialize(base64_decode($_COOKIE['t00ls_s'])); $Ssetting['user']=isset($Ssetting['user'])?$Ssetting['user']:"php | php? | phtml | shtml"; $Ssetting['all']=isset($Ssetting['all'])?intval($Ssetting['all']):0; $Ssetting['hta']=isset($Ssetting['hta'])?intval($Ssetting['hta']):1; } else { $Ssetting['user']="php | php? | phtml | shtml"; $Ssetting['all']=0; $Ssetting['hta']=1; setcookie("t00ls_s", base64_encode(serialize($Ssetting)), time()+60*60*24*365,"/"); } return $Ssetting; } function getCode() { return array( '后门特征->cha88.cn'=>'cha88.cn', '后门特征->c99shell'=>'c99shell', '后门特征->phpspy'=>'phpspy', '后门特征->Scanners'=>'Scanners', '后门特征->cmd.php'=>'cmd.php', '后门特征->str_rot13'=>'str_rot13', '后门特征->webshell'=>'webshell', '后门特征->EgY_SpIdEr'=>'EgY_SpIdEr', '后门特征->tools88.com'=>'tools88.com', '后门特征->SECFORCE'=>'SECFORCE', '后门特征->eval("?>'=>'eval(('|")?>', '可疑代码特征->system('=>'system(', '可疑代码特征->passthru('=>'passthru(', '可疑代码特征->shell_exec('=>'shell_exec(', '可疑代码特征->exec('=>'exec(', '可疑代码特征->popen('=>'popen(', '可疑代码特征->proc_open'=>'proc_open', '可疑代码特征->eval($'=>'eval(('|"|s*)\$', '可疑代码特征->assert($'=>'assert(('|"|s*)\$', '危险MYSQL代码->returns string soname'=>'returnsstringsoname', '危险MYSQL代码->into outfile'=>'intooutfile', '危险MYSQL代码->load_file'=>'select(s+)(.*)load_file', '加密后门特征->eval(gzinflate('=>'eval(gzinflate(', '加密后门特征->eval(base64_decode('=>'eval(base64_decode(', '加密后门特征->eval(gzuncompress('=>'eval(gzuncompress(', '加密后门特征->eval(gzdecode('=>'eval(gzdecode(', '加密后门特征->eval(str_rot13('=>'eval(str_rot13(', '加密后门特征->gzuncompress(base64_decode('=>'gzuncompress(base64_decode(', '加密后门特征->base64_decode(gzuncompress('=>'base64_decode(gzuncompress(', '一句话后门特征->eval($_'=>'eval(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)', '一句话后门特征->assert($_'=>'assert(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)', '一句话后门特征->require($_'=>'require(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)', '一句话后门特征->require_once($_'=>'require_once(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)', '一句话后门特征->include($_'=>'include(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)', '一句话后门特征->include_once($_'=>'include_once(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)', '一句话后门特征->call_user_func("assert"'=>'call_user_func(("|')assert("|')', '一句话后门特征->call_user_func($_'=>'call_user_func(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)', '一句话后门特征->$_POST/GET/REQUEST/COOKIE[?]($_POST/GET/REQUEST/COOKIE[?]'=>'$_(POST|GET|REQUEST|COOKIE)[([^]]+)](('|"|s*)\$_(POST|GET|REQUEST|COOKIE)[', '一句话后门特征->echo(file_get_contents($_POST/GET/REQUEST/COOKIE'=>'echo(file_get_contents(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)', '上传后门特征->file_put_contents($_POST/GET/REQUEST/COOKIE,$_POST/GET/REQUEST/COOKIE'=>'file_put_contents(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)[([^]]+)],('|"|s*)\$_(POST|GET|REQUEST|COOKIE)', '上传后门特征->fputs(fopen("?","w"),$_POST/GET/REQUEST/COOKIE['=>'fputs(fopen((.+),('|")w('|")),('|"|s*)\$_(POST|GET|REQUEST|COOKIE)[', '.htaccess插马特征->SetHandler application/x-httpd-php'=>'SetHandlerapplication/x-httpd-php', '.htaccess插马特征->php_value auto_prepend_file'=>'php_valueauto_prepend_file', '.htaccess插马特征->php_value auto_append_file'=>'php_valueauto_append_file' ); } ?>
希望本文所述对大家基于php的网站安全建设有所帮助。