Function at 0x489927
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 0x489948
mov eax, dword [ebx + 0x84]
sub eax, esi
dec eax
jmp 0x48994a
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 0x489970
neg ebp
cmp dword [ebx + 0xe0], 0
jne 0x489d34
cmp dword [ebx + 0xe4], 0
jne 0x489d34
mov eax, dword [ebx + 0xd8]
test al, 2
je 0x4899c4
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x489d58
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 0x4899a0
jmp 0x489d58
test eax, 0x100
je 0x489a04
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x489d58
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 0x4899d7
jmp 0x489d58
test al, 8
je 0x489a30
cmp ecx, 4
jne 0x489d58
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x489d58
mov al, byte [ebx + 0xfc]
mov byte [edi + 3], al
add edi, ebp
dec ecx
jne 0x489a1d
jmp 0x489d58
test al, 0x10
je 0x489bdf
cmp ecx, 4
jne 0x489b81
mov eax, dword [esp + 0x20]
jmp 0x489b70
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x489a62
movzx eax, byte [edi + 2]
jmp 0x489aa3
test edx, edx
jne 0x489a71
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x489a9f
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 0x489ab6
movzx eax, byte [edi + 1]
jmp 0x489af3
test edx, edx
jne 0x489ac5
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x489af3
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 0x489b05
movzx eax, byte [edi]
jmp 0x489b45
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x489b18
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x489b45
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 0x489a4a
jmp 0x489d58
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x489d58
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 0x489b92
jmp 0x489d58
test al, 0x20
je 0x489d0b
cmp ecx, 4
jne 0x489d0b
mov eax, dword [esp + 0x20]
jmp 0x489cfd
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x489c11
movzx eax, byte [edi + 2]
jmp 0x489c52
test edx, edx
jne 0x489c20
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x489c4e
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 0x489c65
movzx eax, byte [edi + 1]
jmp 0x489ca2
test edx, edx
jne 0x489c74
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x489ca2
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 0x489cb4
movzx eax, byte [edi]
jmp 0x489cf4
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x489cc7
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x489cf4
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 0x489bf9
jmp 0x489d58
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x489d58
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 0x489d13
jmp 0x489d58
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x489d58
push edi
push esi
push dword [esp + 0x20]
push ebx
call fcn.00489459
add esp, 0x10
add edi, ebp
inc esi
dec dword [esp + 0x14]
jne 0x489d40
pop edi
pop esi
pop ebp
pop ebx
ret