Function at 0x43f492
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 0x43f4b3
mov eax, dword [ebx + 0x84]
sub eax, esi
dec eax
jmp 0x43f4b5
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 0x43f4db
neg ebp
cmp dword [ebx + 0xe0], 0
jne 0x43f89f
cmp dword [ebx + 0xe4], 0
jne 0x43f89f
mov eax, dword [ebx + 0xd8]
test al, 2
je 0x43f52f
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x43f8c3
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 0x43f50b
jmp 0x43f8c3
test eax, 0x100
je 0x43f56f
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x43f8c3
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 0x43f542
jmp 0x43f8c3
test al, 8
je 0x43f59b
cmp ecx, 4
jne 0x43f8c3
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x43f8c3
mov al, byte [ebx + 0xfc]
mov byte [edi + 3], al
add edi, ebp
dec ecx
jne 0x43f588
jmp 0x43f8c3
test al, 0x10
je 0x43f74a
cmp ecx, 4
jne 0x43f6ec
mov eax, dword [esp + 0x20]
jmp 0x43f6db
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x43f5cd
movzx eax, byte [edi + 2]
jmp 0x43f60e
test edx, edx
jne 0x43f5dc
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x43f60a
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 0x43f621
movzx eax, byte [edi + 1]
jmp 0x43f65e
test edx, edx
jne 0x43f630
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x43f65e
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 0x43f670
movzx eax, byte [edi]
jmp 0x43f6b0
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x43f683
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x43f6b0
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 0x43f5b5
jmp 0x43f8c3
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x43f8c3
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 0x43f6fd
jmp 0x43f8c3
test al, 0x20
je 0x43f876
cmp ecx, 4
jne 0x43f876
mov eax, dword [esp + 0x20]
jmp 0x43f868
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x43f77c
movzx eax, byte [edi + 2]
jmp 0x43f7bd
test edx, edx
jne 0x43f78b
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x43f7b9
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 0x43f7d0
movzx eax, byte [edi + 1]
jmp 0x43f80d
test edx, edx
jne 0x43f7df
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x43f80d
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 0x43f81f
movzx eax, byte [edi]
jmp 0x43f85f
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x43f832
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x43f85f
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 0x43f764
jmp 0x43f8c3
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x43f8c3
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 0x43f87e
jmp 0x43f8c3
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x43f8c3
push edi
push esi
push dword [esp + 0x20]
push ebx
call fcn.0043efc4
add esp, 0x10
add edi, ebp
inc esi
dec dword [esp + 0x14]
jne 0x43f8ab
pop edi
pop esi
pop ebp
pop ebx
ret