Kanter, who had been tied for the 54-hole lead with Italy's Guido Migliozzi, shot a one-under 72 at Green Eagle Golf Links to finish at 13 under, two shots ahead of Bernd Wiesberger and Thriston Lawrence.
After birdies on the 15th and 16th holes, Kanter made a three-putt bogey on the par-3 17th hole, just minutes after Wiesberger in the group ahead made the same bogey, completely ruining his chances of winning.
Lawrence shot a four-over 77 in the first round and finished with a 68, making birdies on the 15th, 17th and 18th holes, but missed a brilliant eagle shot on the final hole when he came within seven feet of his target.
Australia's interest in the tournament ended on Friday after Haydn Barron, Jason Scrivener and David Micheluzzi failed to make the team.
Kanter was one of the first players to switch to LIV Golf in 2022, but has spent the past two seasons as a reserve for the Saudi-funded Independence team and is now back playing golf in his homeland.
“I find it hard,” the 34-year-old said when asked what it meant to finally get his first win. “It's something I've always wanted to do before I turned pro, so it's hard to think straight right now, but I'm really happy.
“I tried not to get caught up in the tournament and keep it as real as possible. Everything went my way today, whereas it didn’t in the past. Now that I do, I look back on the times when I didn’t and think it wasn’t primarily because of what I did, but what other people did.
“I hit a great putt today on the 15th and 16th holes, and that happened to me today, and from my perspective, I kept putting one foot in front of the other.
“I know how to play golf, and I just kept telling myself that, and even on the 18th hole, I think in the past I was thinking about things that could go wrong, but just kept a clear head and hit the ball where I wanted it on the right side of the fairway and hit the hole.
“It’s a great feeling and it may take a while to process what’s happened.”
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