Korea probably should have been ahead earlier on the balance of play, but a combination of some poor finishing from the home side and tremendous last-ditch defence by the All Whites kept the game in the balance.
Marinovic also saved a first half penalty, diving to his right to deny Bayer Leverkusen striker Son Heungmin.
Just before the end of the first half, Chris Wood had the ball in the back of the net, but the goal was rubbed out for a foul as the New Zealand duelled with a defender.
"I didn't see a lot in the challenge," said coach Hudson. "I thought we were really unlucky not to go 1-0 ahead at that stage."
"It was a goal - no doubt," agreed Wood. "It was shoulder-to-shoulder and they would always be given in the Premier League or Championship."
Wood also had New Zealand's best opportunity early on, when he evaded the Korean markers from a well worked corner kick. Unfortunately for the All Whites, his slightly mishit shot was directed straight at the goal keeper.
But the chance gave the visitors confidence and helped to settle some nerves after a frenetic opening to the match. The Koreans were superior in possession - and built plenty of pressure - but the All Whites enjoyed their own moments to shine, often from quick turnovers in possession.
The key moment of the first spell was the penalty, after the Malaysian referee judged that Marinovic had brought down the runaway Korean striker just inside the box. It looked a misjudgement by the debutant keeper, as he was favourite to win the race to the ball. But the 23-year-old, who has spent the last few years in the German third division, made up for it with an outstanding save to his right to deny Heungmin.
Just before the end of the first half, Wood had the ball in the back of the net, but the goal was rubbed out for an inconclusive foul after the New Zealander pursued a long ball beside his marker.
Many contributed to the solid team debut. Wood and Bill Tuiloma were particularly impressive and Michael McGlinchey also had a fine game, though his errant turn in possession led to the Korean goal. Young defender Deklan Wynne continues to impress and debutants Themistoklis Tzimopoulos, Clayton Lewis and Marinovic were outstanding.
*Michael Burgess travelled to Korea with assistance from ASB, the principal partner of New Zealand Football.