Function at 0x420477
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 0x420498
mov eax, dword [ebx + 0x84]
sub eax, esi
dec eax
jmp 0x42049a
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 0x4204c0
neg ebp
cmp dword [ebx + 0xe0], 0
jne 0x420884
cmp dword [ebx + 0xe4], 0
jne 0x420884
mov eax, dword [ebx + 0xd8]
test al, 2
je 0x420514
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x4208a8
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 0x4204f0
jmp 0x4208a8
test eax, 0x100
je 0x420554
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x4208a8
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 0x420527
jmp 0x4208a8
test al, 8
je 0x420580
cmp ecx, 4
jne 0x4208a8
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x4208a8
mov al, byte [ebx + 0xfc]
mov byte [edi + 3], al
add edi, ebp
dec ecx
jne 0x42056d
jmp 0x4208a8
test al, 0x10
je 0x42072f
cmp ecx, 4
jne 0x4206d1
mov eax, dword [esp + 0x20]
jmp 0x4206c0
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x4205b2
movzx eax, byte [edi + 2]
jmp 0x4205f3
test edx, edx
jne 0x4205c1
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x4205ef
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 0x420606
movzx eax, byte [edi + 1]
jmp 0x420643
test edx, edx
jne 0x420615
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x420643
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 0x420655
movzx eax, byte [edi]
jmp 0x420695
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x420668
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x420695
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 0x42059a
jmp 0x4208a8
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x4208a8
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 0x4206e2
jmp 0x4208a8
test al, 0x20
je 0x42085b
cmp ecx, 4
jne 0x42085b
mov eax, dword [esp + 0x20]
jmp 0x42084d
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x420761
movzx eax, byte [edi + 2]
jmp 0x4207a2
test edx, edx
jne 0x420770
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x42079e
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 0x4207b5
movzx eax, byte [edi + 1]
jmp 0x4207f2
test edx, edx
jne 0x4207c4
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x4207f2
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 0x420804
movzx eax, byte [edi]
jmp 0x420844
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x420817
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x420844
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 0x420749
jmp 0x4208a8
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x4208a8
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 0x420863
jmp 0x4208a8
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x4208a8
push edi
push esi
push dword [esp + 0x20]
push ebx
call fcn.0041ffa9
add esp, 0x10
add edi, ebp
inc esi
dec dword [esp + 0x14]
jne 0x420890
pop edi
pop esi
pop ebp
pop ebx
ret