Function at 0x499607
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 0x499628
mov eax, dword [ebx + 0x84]
sub eax, esi
dec eax
jmp 0x49962a
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 0x499650
neg ebp
cmp dword [ebx + 0xe0], 0
jne 0x499a14
cmp dword [ebx + 0xe4], 0
jne 0x499a14
mov eax, dword [ebx + 0xd8]
test al, 2
je 0x4996a4
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x499a38
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 0x499680
jmp 0x499a38
test eax, 0x100
je 0x4996e4
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x499a38
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 0x4996b7
jmp 0x499a38
test al, 8
je 0x499710
cmp ecx, 4
jne 0x499a38
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x499a38
mov al, byte [ebx + 0xfc]
mov byte [edi + 3], al
add edi, ebp
dec ecx
jne 0x4996fd
jmp 0x499a38
test al, 0x10
je 0x4998bf
cmp ecx, 4
jne 0x499861
mov eax, dword [esp + 0x20]
jmp 0x499850
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x499742
movzx eax, byte [edi + 2]
jmp 0x499783
test edx, edx
jne 0x499751
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x49977f
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 0x499796
movzx eax, byte [edi + 1]
jmp 0x4997d3
test edx, edx
jne 0x4997a5
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x4997d3
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 0x4997e5
movzx eax, byte [edi]
jmp 0x499825
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x4997f8
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x499825
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 0x49972a
jmp 0x499a38
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x499a38
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 0x499872
jmp 0x499a38
test al, 0x20
je 0x4999eb
cmp ecx, 4
jne 0x4999eb
mov eax, dword [esp + 0x20]
jmp 0x4999dd
movzx edx, byte [edi + 3]
mov ecx, dword [ebx + 0xfc]
mov dword [esp + 0x18], edx
test ecx, ecx
jne 0x4998f1
movzx eax, byte [edi + 2]
jmp 0x499932
test edx, edx
jne 0x499900
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x49992e
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 0x499945
movzx eax, byte [edi + 1]
jmp 0x499982
test edx, edx
jne 0x499954
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x499982
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 0x499994
movzx eax, byte [edi]
jmp 0x4999d4
mov edx, dword [esp + 0x18]
test edx, edx
jne 0x4999a7
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x4999d4
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 0x4998d9
jmp 0x499a38
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x499a38
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 0x4999f3
jmp 0x499a38
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x499a38
push edi
push esi
push dword [esp + 0x20]
push ebx
call fcn.00499139
add esp, 0x10
add edi, ebp
inc esi
dec dword [esp + 0x14]
jne 0x499a20
pop edi
pop esi
pop ebp
pop ebx
ret