Function at 0x4fd5e4
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 0x4fd605
mov eax, dword [ebx + 0x84]
sub eax, esi
dec eax
jmp 0x4fd607
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 0x4fd62d
neg ebp
cmp dword [ebx + 0xe0], 0
jne 0x4fd9f1
cmp dword [ebx + 0xe4], 0
jne 0x4fd9f1
mov eax, dword [ebx + 0xd8]
test al, 2
je 0x4fd681
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x4fda15
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 0x4fd65d
jmp 0x4fda15
test eax, 0x100
je 0x4fd6c1
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x4fda15
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 0x4fd694
jmp 0x4fda15
test al, 8
je 0x4fd6ed
cmp ecx, 4
jne 0x4fda15
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x4fda15
mov al, byte [ebx + 0xfc]
mov byte [edi + 3], al
add edi, ebp
dec ecx
jne 0x4fd6da
jmp 0x4fda15
test al, 0x10
je 0x4fd89c
cmp ecx, 4
jne 0x4fd83e
mov eax, dword [esp + 0x20]
jmp 0x4fd82d
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x4fd71f
movzx eax, byte [edi + 2]
jmp 0x4fd760
test edx, edx
jne 0x4fd72e
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x4fd75c
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 0x4fd773
movzx eax, byte [edi + 1]
jmp 0x4fd7b0
test edx, edx
jne 0x4fd782
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x4fd7b0
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 0x4fd7c2
movzx eax, byte [edi]
jmp 0x4fd802
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x4fd7d5
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x4fd802
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 0x4fd707
jmp 0x4fda15
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x4fda15
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 0x4fd84f
jmp 0x4fda15
test al, 0x20
je 0x4fd9c8
cmp ecx, 4
jne 0x4fd9c8
mov eax, dword [esp + 0x20]
jmp 0x4fd9ba
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x4fd8ce
movzx eax, byte [edi + 2]
jmp 0x4fd90f
test edx, edx
jne 0x4fd8dd
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x4fd90b
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 0x4fd922
movzx eax, byte [edi + 1]
jmp 0x4fd95f
test edx, edx
jne 0x4fd931
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x4fd95f
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 0x4fd971
movzx eax, byte [edi]
jmp 0x4fd9b1
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x4fd984
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x4fd9b1
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 0x4fd8b6
jmp 0x4fda15
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x4fda15
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 0x4fd9d0
jmp 0x4fda15
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x4fda15
push edi
push esi
push dword [esp + 0x20]
push ebx
call fcn.004fd116
add esp, 0x10
add edi, ebp
inc esi
dec dword [esp + 0x14]
jne 0x4fd9fd
pop edi
pop esi
pop ebp
pop ebx
ret