The following are known CTRPF AR Cheat Codes for Pokemon Crystal Version on Nintendo 3DS (3DS).

000400000B000500.txt

[Use Bike (Press START)]
DD000000 00000008
28A2DA5D 00000001

[Wild Level Modifier (64 is 100)]
28A2D243 00000064

[Wild Pokemon Modifier (96 is mewtwo)]
28A2D304 00000096

[Infinite HP]
DB000000 08A2C73E
D8000000 08A2C73C
D2000000 00000000
DB000000 08A2C73F
D8000000 08A2C73D
D2000000 00000000

[Celebi Event Activator + GSBall]
28A2DB89 00000040
28A2D1F2 00000073

[Shiny Pokemon]
28A2D330 00000007

[Mod 1st Item Shop]
28A2D1F1 00000001

[1st Pokemon 1st Move Modifier]
28A2DDE1 00000001