SRD (p.361)
Multiattack. The ape makes two fist attacks. Fist. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage. Rock. Ranged Weapon Attack: +5 to hit, range 25/50 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage.