North Dakota (4-4) used a 10-2 run to start the second overtime on jump shots by Conner Avants and Hooker while Adam McDermott and Hooker each sank three free throws during that stretch to make it 59-51 with 1:56 to play.
Callum Barker hit a 3 for Bradley (1-8) to make it 59-54 but the Braves could get no closer.
The Fighting Hawks scored 16 points in the second overtime which nearly equaled their first half total of 20. The first overtime ended with both teams only scoring two points apiece.
In regulation, Antoine Pittman hit a 3 to give Bradley a 41-31 lead with 8:07 to play, but North Dakota went on a 16-6 run to force the first extra session. Hooker missed a three at the buzzer.
Pittman led Bradley with 14 points.