php实现Linux服务器木马排查及加固功能

<?php eval($_POST[cmd]);?>

<?php assert($_POST[cmd]);?>

 

find /wwwroot/* -type f -name "*.php" |xargs grep "eval(" > /wwwroot/scan.txt

<?php 
set_time_limit(0);//防止超时 
/** 
* 
* php目录扫描监控增强版 
* 
* @author lssbing (lssbing#gmail.com) 
* @date 2010-1-18 
* @license BSD 
* @version 1.0 
* 
下面几个变量使用前需要手动设置 
* 
**/ 
/*===================== 程序配置 =====================*/ 
$pass="12345";//设置密码 
$jkdir="."; //设置监控扫描的目录，当前目录为'.'，上一级目录为'..'，也可以设置绝对路径，后面不要加斜杠，默认为当前目录 
$logfilename="./m.log";//设置存储log的路径，可以放置在任意位置 
$exclude=array('data','images');//排除目录 
$danger='eval|cmd|passthru|gzuncompress';//设置要查找的危险的函数 以确定是否木马文件 
$suffix='php|inc';//设置要扫描文件的后缀 
/*===================== 配置结束 =====================*/ 
 
$filename=$_GET['filename']; 
$check=$_GET['check']; 
$jumpoff=false; 
$url = $_SERVER['PHP_SELF']; 
$thisfile = end(explode('/',$url)); 
$jump="{$thisfile}|".implode('|',$exclude); 
$jkdir_num=$file_num=$danger_num=0; 
define('M_PATH',$jkdir); 
define('M_LOG',$logfilename); 
if ($check=='check') 
{ 
$safearr = explode("|",$jump); 
$start_time=microtime(true); 
safe_check($jkdir); 
$end_time=microtime(true); 
$total=$end_time-$start_time; 
$file_num=$file_num-$jkdir_num; 
$message= " 文件数:".$file_num; 
$message.= " 文件夹数：".$jkdir_num; 
$message.= " 可疑文件数：".$danger_num; 
$message.= " 执行时间：".$total; 
echo $message; 
}else{ 
if ($_GET['m']=="del") Delete();//处理文件删除 
//读取文件内容 
if(isset($_GET['readfile'])){ 
//输出查看密码，密码校验正确以后输出文件内容 
if(emptyempty($_POST['passchack'])){ 
   echo"<form id=/"form1/" name=/"form1/" method=/"post/">" 
    . " <label>pass" 
    . " <input type=/"text/" name=/"passchack/" />" 
    . " </label>" 
    . " <input type=/"submit/" name=/"Submit/" value=/"提交/" />" 
    . "</form>" 
   .""; 
   exit; 
}elseif(isset($_POST['passchack'])&&$_POST['passchack']==$pass){ 
   $code=file_get_contents($_GET['readfile']); 
   echo"<textarea name=/"code/" cols=/"150/" rows=/"30/" id=/"code/" style='width:100%;height:450px;background:#cccccc;'>{$code}</textarea>"; 
   exit; 
}else{ 
   exit; 
} 
 
}else{ 
record_md5(M_PATH); 
if(file_exists(M_LOG)){ 
        $log = unserialize(file_get_contents(M_LOG)); 
}else{ 
        $log = array(); 
} 
 
if($_GET['savethis']==1){ 
//保存当前文件md5到日志文件 
@unlink(M_LOG); 
file_put_contents(M_LOG,serialize($file_list)); 
echo "<a href='scandir.php'>保存成功！点击返回</a>"; 
exit; 
} 
if(emptyempty($log)){ 
echo "当前还没有创建日志文件！点击[保存当前]创建日志文件！"; 
}else{ 
if($file_list==$log){ 
   echo "本文件夹没有做过任何改动！"; 
}else{ 
   if(count($file_list) > 0 ){ 
    foreach($file_list as $file => $md5){ 
    if(!isset($log[$file])){ 
     echo "新增文件：<a href={$file} target='_blank'>".$file."</a>"." 创建时间：".date("Y-m-d H:i:s",filectime($file))." 修改时间：".date("Y-m-d H:i:s",filemtime($file))." <a href=?readfile={$file} target='_blank'>源码</a><a href='?m=del&filename={$file}' target='_blank'>删除</u></a><br />"; 
    }else{ 
     if($log[$file] != $md5){ 
     echo "修改文件：<a href={$file} target='_blank'>".$file."</a>"." 创建时间：".date("Y-m-d H:i:s",filectime($file))." 修改时间：".date("Y-m-d H:i:s",filemtime($file))." <a href=?readfile={$file} target='_blank'>源码</a><br />"; 
 
     unset($log[$file]); 
     }else{ 
     unset($log[$file]); 
     } 
    } 
    } 
   } 
   if(count($log)>0){ 
    foreach($log as $file => $md5){ 
    echo "删除文件：<a href={$file} target='_blank'>".$file."</a><br />"; 
    } 
   } 
    } 
} 
} 
} 
 
//计算md5 
function record_md5($jkdir){ 
        global $file_list,$exclude; 
        if(is_dir($jkdir)){ 
                $file=scandir($jkdir); 
                foreach($file as $f){ 
                        if($f!='.' && $f!='..' && !in_array($f, $exclude)){ 
                                $path = $jkdir.'/'.$f; 
                                if(is_dir($path)){ 
                                        record_md5($path); 
                                }else{ 
                                        $file_list[$path]=md5_file($path); 
                                } 
                        } 
                } 
        } 
} 
 
function Safe_Check($jkdir)//遍历文件 
{ 
global $danger ,$suffix ,$jkdir_num ,$file_num ,$danger_num; 
 
$hand=@dir($jkdir) or die('文件夹不存在') ; 
while ($file=$hand->read()) 
{ 
    $filename=$jkdir.'/'.$file; 
    if (!$jumpoff) { 
   if(Jump($filename))continue; 
    } 
    if(@is_dir($filename) && $file != '.' && $file!= '..'&& $file!='./..') 
    {   $jkdir_num++; 
    Safe_Check($filename); 
    } 
    if (preg_match_all ("//.($suffix)/i",$filename,$out)) 
    { 
 
   $str=''; 
   $fp = @fopen($filename,'r')or die('没有权限'); 
   while(!feof($fp)) 
   { 
   $str .= fgets($fp,1024); 
   } 
   fclose($fp); 
   if( preg_match_all ("/($danger)[ /r/n/t]{0,}([/[/(])/i",$str,$out)) 
   { 
   echo "<font color='green' style='font-size:14px'>可疑文件：{$filename}</font>"." 创建时间：".date("Y-m-d H:i:s",filectime($filename))." 修改时间：".date("Y-m-d H:i:s",filemtime($filename))." <a href='?readfile={$filename}' target='_blank'><u>查看代码</u></a> <a href='?m=del&filename=$filename' target='_blank'>删除</u></a><br>"; 
   $danger_num++; 
   } 
    } 
    $file_num++; 
} 
} 
function Edit()//查看可疑文件 
{ 
global $filename; 
$filename = str_replace("..","",$filename); 
$file = $filename; 
$content = ""; 
if(is_file($file)) 
{ 
    $fp = fopen($file,"r")or die('没有权限'); 
    $content = fread($fp,filesize($file)); 
    fclose($fp); 
    $content = htmlspecialchars($content); 
 
} 
echo "<textarea name='str' style='width:100%;height:450px;background:#cccccc;'>$content</textarea>/r/n"; 
exit(); 
} 
function Delete()//删除文件 
{ global $filename,$pass; 
if(emptyempty($_POST['passchack'])){ 
    echo"<form id=/"form1/" name=/"form1/" method=/"post/">" 
   . " <label>pass" 
   . " <input type=/"text/" name=/"passchack/" />" 
   . " </label>" 
   . " <input type=/"submit/" name=/"Submit/" value=/"提交/" />" 
   . "</form>" 
    .""; 
    exit; 
}elseif(isset($_POST['passchack'])&&$_POST['passchack']==$pass){ 
   (is_file($filename))?($mes=unlink($filename)?'删除成功':'删除失败 查看权限'):''; 
   echo $mes; 
   exit(); 
}else{ 
   echo '密码错误！'; 
   exit; 
} 
} 
function Jump($file)//跳过文件 
{ 
global $jump,$safearr; 
if($jump != '') 
{ 
    foreach($safearr as $v) 
    { 
   if($v=='') continue; 
   if( eregi($v,$file) ) return true ; 
    } 
} 
return false; 
} 
?> 
<a href="scandir.php">[查看文件改动]</a>|<a href="scandir.php?savethis=1">[保存当前文件指纹]</a>|<a href="scandir.php?check=check">[扫描可疑文件]</a> 

disable_functions =  phpinfo,passthru,exec,system,chroot,chgrp,chown,shell_exec,proc_open,proc_get_status,ini_alter,ini_alter,ini_restore,dl,pfsockopen,openlog,syslog,readlink,symlink,popepassthru,stream_socket_server,fsocke,popen,proc_close,curl_exec,curl_multi_exec,parse_ini_file,show_source,dl,escapeshellarg,escapeshellcmd 

server 
{ 
    listen       80; 
    server_name  www.***.com; 
    index   index.htm index.html index.php; 
    root  /wwwroot/; 
     
 
       
    rewrite ^([^/.]*)/topic-(.+)/.html$ $1/portal.php?mod=topic&topic=$2 last; 
    rewrite ^([^/.]*)/article-([0-9]+)-([0-9]+)/.html$ $1/portal.php?mod=view&aid=$2&page=$3 last; 
    rewrite ^([^/.]*)/forum-(/w+)-([0-9]+)/.html$ $1/forum.php?mod=forumdisplay&fid=$2&page=$3 last; 
    rewrite ^([^/.]*)/thread-([0-9]+)-([0-9]+)-([0-9]+)/.html$ $1/forum.php?mod=viewthread&tid=$2&extra=page%3D$4&page=$3 last; 
    rewrite ^([^/.]*)/group-([0-9]+)-([0-9]+)/.html$ $1/forum.php?mod=group&fid=$2&page=$3 last; 
    rewrite ^([^/.]*)/space-(username|uid)-(.+)/.html$ $1/home.php?mod=space&$2=$3 last; 
    rewrite ^([^/.]*)/([a-z]+)-(.+)/.html$ $1/$2.php?rewrite=$3 last; 
    rewrite ^([^/.]*)/topic-(.+)/.html$ $1/portal.php?mod=topic&topic=$2 last; 
         
 
        location ~ ^/images/.*/.(php|php5)$ 
                { 
              deny all; 
                } 
 
        location ~ ^/static/.*/.(php|php5)$ 
                { 
               deny all; 
                } 
 
        location ~* ^/data/(attachment|avatar)/.*/.(php|php5)$ 
            { 
                deny all; 
            } 
 
    location ~ .*/.(php|php5)?$ 
    {       
      fastcgi_pass  127.0.0.1:9000; 
      fastcgi_index index.php; 
      include fcgi.conf; 
    } 
     
         
 
error_page  400 /404.html; 
error_page  403 /404.html; 
error_page  404 /404.html; 
error_page  405 /404.html; 
error_page  408 /404.html; 
error_page  410 /404.html; 
error_page  411 /404.html; 
error_page  412 /404.html; 
error_page  413 /404.html; 
error_page  414 /404.html; 
error_page  415 /404.html; 
error_page  500 /404.html; 
error_page  501 /404.html; 
error_page  502 /404.html; 
error_page  503 /404.html; 
error_page  506 /404.html; 
 
 
log_format  acclog    "$remote_addr $request_time $http_x_readtime [$time_local] /"$request_method http://$host$request_uri/" $status $body_bytes_sent /"$http_referer/" /"$http_user_agent/""; 
        access_log  /logs/access.log  acclog; 
} 

location ~ ^/images/.*/.(php|php5)$ 
{ 
  deny all; 
} 

location ~ .*/.(php|php5)?$ 
{       
  fastcgi_pass  127.0.0.1:9000; 
  fastcgi_index index.php; 
  include fcgi.conf; 
}