Credits:

Defa

How To

Add the following routine in free space and note the offset:

    ldrh  r2, [r3, #0]
    mov   r3, #192
    lsl   r3, r3, #1 @384, WEATHER_HAIL_ANY
    tst   r2, r3
    beq   checksandstorm
    ldr   r3, [sp, #24]
    mov   r1, #15 @TYPE_ICE
    cmp   r3, #0
    beq   skip1
    ldr   r0, [r6, #8]
    ldr   r3, =0x09490F71 @IsMonOfType
    bl    linker
    b     skip2
skip1:
    ldr   r0, [sp, #20]
    ldr   r3, =0x094508C5 @IsOfType
    bl    linker
skip2:
    cmp   r0, #0
    beq   back
    mov   r3, #15
    ldr   r0, [r6, #36]
    lsl   r2, r0, #0
    mul   r2, r3
    mov   r1, #10
    lsl   r0, r2, #0
    ldr   r3, =0x09400427 @__aeabi_uidiv
    bl    linker
    str   r0, [r6, #36]
back:
    ldr   r3, =0x0945EB6D @back to Stat Buffs - Attacker
linker:
    bx    r3
checksandstorm:
    mov   r3, #24
    tst   r2, r3
    beq   back
    ldr   r3, =0x0945EB45 @back after hook
    bx    r3

Change 145EB3C from 1A 88 18 23 1A 42 13 D0 to 00 4A 10 47 <offset+1>

Happy Hacking!