Yes there is mossy rock and icy rock in ORAS
Mossy rock
It is in Petalburg Woods.In the north-east of Petalburg Woods, behind a Cut tree, you will find a small moss covered rock in the absolute corner.
Icy rock
It is in Shoal Cave.In the absolute bottom floor of the Shoal Cave, you will find a small moss covered rock in the middle. This area is only available for short times every day. It is available when the tide is out between 03:00-09:00 and 15:00-21:00 every day. In all other times, it will not be accessible.
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