Function at 0x420d50
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 0x420d71
mov eax, dword [ebx + 0x84]
sub eax, esi
dec eax
jmp 0x420d73
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 0x420d99
neg ebp
cmp dword [ebx + 0xe0], 0
jne 0x42115d
cmp dword [ebx + 0xe4], 0
jne 0x42115d
mov eax, dword [ebx + 0xd8]
test al, 2
je 0x420ded
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x421181
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 0x420dc9
jmp 0x421181
test eax, 0x100
je 0x420e2d
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x421181
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 0x420e00
jmp 0x421181
test al, 8
je 0x420e59
cmp ecx, 4
jne 0x421181
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x421181
mov al, byte [ebx + 0xfc]
mov byte [edi + 3], al
add edi, ebp
dec ecx
jne 0x420e46
jmp 0x421181
test al, 0x10
je 0x421008
cmp ecx, 4
jne 0x420faa
mov eax, dword [esp + 0x20]
jmp 0x420f99
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x420e8b
movzx eax, byte [edi + 2]
jmp 0x420ecc
test edx, edx
jne 0x420e9a
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x420ec8
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 0x420edf
movzx eax, byte [edi + 1]
jmp 0x420f1c
test edx, edx
jne 0x420eee
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x420f1c
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 0x420f2e
movzx eax, byte [edi]
jmp 0x420f6e
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x420f41
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x420f6e
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 0x420e73
jmp 0x421181
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x421181
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 0x420fbb
jmp 0x421181
test al, 0x20
je 0x421134
cmp ecx, 4
jne 0x421134
mov eax, dword [esp + 0x20]
jmp 0x421126
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x42103a
movzx eax, byte [edi + 2]
jmp 0x42107b
test edx, edx
jne 0x421049
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x421077
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 0x42108e
movzx eax, byte [edi + 1]
jmp 0x4210cb
test edx, edx
jne 0x42109d
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x4210cb
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 0x4210dd
movzx eax, byte [edi]
jmp 0x42111d
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x4210f0
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x42111d
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 0x421022
jmp 0x421181
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x421181
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 0x42113c
jmp 0x421181
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x421181
push edi
push esi
push dword [esp + 0x20]
push ebx
call fcn.00420882
add esp, 0x10
add edi, ebp
inc esi
dec dword [esp + 0x14]
jne 0x421169
pop edi
pop esi
pop ebp
pop ebx
ret