Hasnaoui had been working for the Moroccan pro-Salafist Assabil magazine when he was convicted of being a part of a "criminal group" and "trying to conceal information about terrorist crimes," the public prosecutor said.
Hasnaoui had travelled to Turkey to write a report on Moroccan jihadists passing through on their way to fight against the regime of Syrian President Bashar al-Assad.
His lawyer said Turkish authorities turned the journalist back at the airport and that he had not entered the country.
Idriss added that his client would appeal the sentence.
A second Moroccan journalist, Ali Anouzla, whose imprisonment on charges of "aiding terrorism" provoked condemnation at home and abroad, was freed on bail Friday after a month in prison.
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