_S SLPM-86023
_G Akumajo Dracula X Gekka No Yasoukyoku
_C0 HP maximum
_L 0x11097BA0 0x0000270F
_L 0x11097BA4 0x0000270F
_C0 MP maximum
_L 0x11097BB0 0x0000270F
_L 0x11097BB4 0x0000270F
_C0 STR highest
_L 0x11097BB8 0x000003E7
_C0 CON highest
_L 0x11097BBC 0x000003E7
_C0 INT highest
_L 0x11097BC0 0x000003E7
_C0 LCK highest
_L 0x11097BC4 0x000003E7

These cwcheats are for the Japanese version of Castlevania Symphony of the Night.

Side note: When you download the JPN sotn, rename the folder to:
SLPM-86023

There are more codes like have all special items etc, but they freeze so I didn't include them.

Edit: After playing around for a while, this US code to have all special items WILL work. I tried it just now so use this if you'd like for all special items

_C0 All Special Items
_L 50000402 0202
_L 80097982 8180
_L 50000F02 0000
_L 80097978 0303