They're FTA most of the time (as long as programmes without rights issues are being aired), I'm guessing you watch them on Eutelsat 9ºE with a FTA satellite receiver? Duna TV/M1/M2 etc.?
To be able to watch the encrypted programmes, you'd need a card from MTVA/Duna and a Conax-compatible receiver or Conax CAM (your receiver or TV with satellite tuner must have a CI+ slot to be able to use a CAM). I don't know where you can get the cards from online, but presumably they are available to buy in Hungary if you have friends/family there? The card would be bought from Duna/MTVA themselves I guess.