Function at 0x503620
Capabilities:
Encode data using xor

Disassembly:
push ebx
mov ebx, dword [esp + 8]
push ebp
push esi
mov esi, dword [esp + 0x18]
mov edx, dword [ebx + 0xe8]
push edi
test edx, edx
je 0x503641
mov eax, dword [ebx + 0x84]
sub eax, esi
dec eax
jmp 0x503643
mov eax, esi
mov ebp, dword [ebx + 0xcc]
mov edi, ebp
mov ecx, dword [ebx + 0xd4]
imul edi, eax
mov eax, ecx
imul eax, dword [esp + 0x18]
add edi, eax
add edi, dword [ebx + 0xc8]
test edx, edx
je 0x503669
neg ebp
cmp dword [ebx + 0xe0], 0
jne 0x503a2d
cmp dword [ebx + 0xe4], 0
jne 0x503a2d
mov eax, dword [ebx + 0xd8]
test al, 2
je 0x5036bd
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x503a51
mov al, byte [ebx + 0xf0]
xor byte [edi + 2], al
mov al, byte [ebx + 0xf4]
xor byte [edi + 1], al
mov al, byte [ebx + 0xf8]
xor byte [edi], al
add edi, ebp
dec ecx
jne 0x503699
jmp 0x503a51
test eax, 0x100
je 0x5036fd
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x503a51
mov al, byte [ebx + 0xf0]
mov byte [edi + 2], al
mov al, byte [ebx + 0xf4]
mov byte [edi + 1], al
mov al, byte [ebx + 0xf8]
mov byte [edi], al
mov al, byte [ebx + 0xfc]
mov byte [edi + 3], al
add edi, ebp
dec ecx
jne 0x5036d0
jmp 0x503a51
test al, 8
je 0x503729
cmp ecx, 4
jne 0x503a51
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x503a51
mov al, byte [ebx + 0xfc]
mov byte [edi + 3], al
add edi, ebp
dec ecx
jne 0x503716
jmp 0x503a51
test al, 0x10
je 0x5038d8
cmp ecx, 4
jne 0x50387a
mov eax, dword [esp + 0x20]
jmp 0x503869
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x50375b
movzx eax, byte [edi + 2]
jmp 0x50379c
test edx, edx
jne 0x50376a
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x503798
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi + 2]
imul ecx, dword [ebx + 0xf0], 0xff
imul eax, esi
imul esi, edx
imul eax, edx
add eax, ecx
imul ecx, dword [ebx + 0xfc], 0xff
cdq
add esi, ecx
idiv esi
mov edx, dword [esp + 0x18]
mov byte [edi + 2], al
mov ecx, dword [ebx + 0xfc]
test ecx, ecx
jne 0x5037af
movzx eax, byte [edi + 1]
jmp 0x5037ec
test edx, edx
jne 0x5037be
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x5037ec
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi + 1]
imul ecx, dword [ebx + 0xf4], 0xff
imul eax, esi
imul esi, edx
imul eax, edx
add eax, ecx
imul ecx, dword [ebx + 0xfc], 0xff
cdq
add esi, ecx
idiv esi
mov byte [edi + 1], al
mov ecx, dword [ebx + 0xfc]
test ecx, ecx
jne 0x5037fe
movzx eax, byte [edi]
jmp 0x50383e
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x503811
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x50383e
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi]
imul ecx, dword [ebx + 0xf8], 0xff
imul eax, esi
imul esi, edx
imul eax, edx
add eax, ecx
imul ecx, dword [ebx + 0xfc], 0xff
cdq
add esi, ecx
idiv esi
mov byte [edi], al
imul ecx, dword [ebx + 0xfc], 0xff
mov eax, dword [ebx + 0x100]
imul eax, dword [esp + 0x18]
add eax, ecx
mov ecx, 0xff
cdq
idiv ecx
mov byte [edi + 3], al
mov eax, dword [esp + 0x14]
dec eax
add edi, ebp
mov dword [esp + 0x14], eax
test eax, eax
jne 0x503743
jmp 0x503a51
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x503a51
mov esi, 0xff
movzx eax, byte [edi + 2]
imul eax, dword [ebx + 0x100]
add eax, dword [ebx + 0xf0]
cdq
idiv esi
mov byte [edi + 2], al
movzx eax, byte [edi + 1]
imul eax, dword [ebx + 0x100]
add eax, dword [ebx + 0xf4]
cdq
idiv esi
mov byte [edi + 1], al
movzx eax, byte [edi]
imul eax, dword [ebx + 0x100]
add eax, dword [ebx + 0xf8]
cdq
idiv esi
mov byte [edi], al
add edi, ebp
dec ecx
jne 0x50388b
jmp 0x503a51
test al, 0x20
je 0x503a04
cmp ecx, 4
jne 0x503a04
mov eax, dword [esp + 0x20]
jmp 0x5039f6
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x50390a
movzx eax, byte [edi + 2]
jmp 0x50394b
test edx, edx
jne 0x503919
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x503947
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi + 2]
imul ecx, dword [ebx + 0xf0], 0xff
imul eax, esi
imul esi, edx
imul eax, edx
add eax, ecx
imul ecx, dword [ebx + 0xfc], 0xff
cdq
add esi, ecx
idiv esi
mov edx, dword [esp + 0x18]
mov byte [edi + 2], al
mov ecx, dword [ebx + 0xfc]
test ecx, ecx
jne 0x50395e
movzx eax, byte [edi + 1]
jmp 0x50399b
test edx, edx
jne 0x50396d
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x50399b
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi + 1]
imul ecx, dword [ebx + 0xf4], 0xff
imul eax, esi
imul esi, edx
imul eax, edx
add eax, ecx
imul ecx, dword [ebx + 0xfc], 0xff
cdq
add esi, ecx
idiv esi
mov byte [edi + 1], al
mov ecx, dword [ebx + 0xfc]
test ecx, ecx
jne 0x5039ad
movzx eax, byte [edi]
jmp 0x5039ed
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x5039c0
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x5039ed
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi]
imul ecx, dword [ebx + 0xf8], 0xff
imul eax, esi
imul esi, edx
imul eax, edx
add eax, ecx
imul ecx, dword [ebx + 0xfc], 0xff
cdq
add esi, ecx
idiv esi
mov byte [edi], al
mov eax, dword [esp + 0x14]
dec eax
add edi, ebp
mov dword [esp + 0x14], eax
test eax, eax
jne 0x5038f2
jmp 0x503a51
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x503a51
mov al, byte [ebx + 0xf0]
mov byte [edi + 2], al
mov al, byte [ebx + 0xf4]
mov byte [edi + 1], al
mov al, byte [ebx + 0xf8]
mov byte [edi], al
add edi, ebp
dec ecx
jne 0x503a0c
jmp 0x503a51
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x503a51
push edi
push esi
push dword [esp + 0x20]
push ebx
call fcn.00503152
add esp, 0x10
add edi, ebp
inc esi
dec dword [esp + 0x14]
jne 0x503a39
pop edi
pop esi
pop ebp
pop ebx
ret