World University City blind injection and explicit and error Injection

World University City is a network office system used by hundreds of universities...
Colleges and higher vocational colleges are mostly used ..
Our Native school used this assignment to get rid of it ..
Mssql injection ..... One is blind injection, and the other is explicit injection ...... Headache ....
The server has enabled session authentication, and the tool will be 302. manually,
Judge database as mssql

Aspect

As you can see, there is indeed no more typing... What do you understand below

Room_ID = 18 and 0 <(select count (*) from

Master. dbo. sysdatabases where name> 1 and dbid = 1 );

Submit dbid = 2.3.4... to obtain all database names.

A total of seven database names:
Master
Tempdb
Model
Msdb
Worlduc_db
ImChat
SP_LiveTecher

The database is too large and related to the data security of millions of college students. Afraid of drinking tea. So far, it has been blocked .... You know...
Submitted to the Administrator. The Administrator gave me a gift with great enthusiasm and repaired it ..
In the words of an empty prodigal son, the gift is very powerful, and the repair is not powerful. Using or and encoding conversion will bypass. Continue the injection ..
Submit again .. This repair is far more powerful.