php实现Linux服务器木马排查及加固功能

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

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

PHP实战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";//设置暗码
$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($_GET['readfile'])){
//输出查看暗码,暗码校验正确以后输出文件内容
if(emptyempty($_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'>".$file."</a>"." 创建时间：".date("Y-m-d H:i:s",filemtime($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)[ rnt]{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>rn";
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 $mes;
?? exit();
}else{
?? echo '暗码错误!';
?? exit;
}
}
function Jump($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_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,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;
}