Function at 0x501653
Capabilities:
Encode data using xor

Disassembly:
push ebx
mov ebx, dword [esp + 8]
xor edx, edx
push ebp
push esi
mov esi, dword [esp + 0x18]
push edi
cmp dword [ebx + 0xe8], edx
je 0x501674
mov eax, dword [ebx + 0x84]
sub eax, esi
dec eax
jmp 0x501676
mov eax, esi
mov edi, dword [ebx + 0xcc]
mov ecx, dword [ebx + 0xd4]
mov ebp, dword [esp + 0x18]
imul edi, eax
mov eax, ecx
imul eax, ebp
add edi, eax
add edi, dword [ebx + 0xc8]
cmp dword [ebx + 0xe0], edx
jne 0x501aac
cmp dword [ebx + 0xe4], edx
jne 0x501aac
mov eax, dword [ebx + 0xd8]
test al, 2
je 0x5016ec
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x501ad1
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, dword [ebx + 0xd4]
dec ecx
jne 0x5016c4
jmp 0x501ad1
test eax, 0x100
je 0x50172d
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x501ad1
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
lea edi, [edi + 4]
mov al, byte [ebx + 0xfc]
mov byte [edi - 1], al
dec ecx
jne 0x5016ff
jmp 0x501ad1
test al, 8
je 0x50175c
cmp ecx, 4
jne 0x501ad1
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x501ad1
add edi, 3
mov al, byte [ebx + 0xfc]
mov byte [edi], al
lea edi, [edi + 4]
dec ecx
jne 0x501749
jmp 0x501ad1
test al, 0x10
je 0x5018ff
cmp ecx, 4
jne 0x5018a0
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x501ad1
mov ecx, dword [ebx + 0xfc]
movzx ebp, byte [edi + 3]
test ecx, ecx
jne 0x501791
movzx eax, byte [edi + 2]
jmp 0x5017ce
test ebp, ebp
jne 0x5017a0
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x5017ce
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi + 2]
imul ecx, dword [ebx + 0xf0], 0xff
imul eax, esi
imul esi, ebp
imul eax, ebp
add eax, ecx
imul ecx, dword [ebx + 0xfc], 0xff
cdq
add esi, ecx
idiv esi
mov byte [edi + 2], al
mov ecx, dword [ebx + 0xfc]
test ecx, ecx
jne 0x5017e1
movzx eax, byte [edi + 1]
jmp 0x50181e
test ebp, ebp
jne 0x5017f0
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x50181e
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi + 1]
imul ecx, dword [ebx + 0xf4], 0xff
imul eax, esi
imul esi, ebp
imul eax, ebp
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 0x501830
movzx eax, byte [edi]
jmp 0x50186c
test ebp, ebp
jne 0x50183f
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x50186c
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi]
imul ecx, dword [ebx + 0xf8], 0xff
imul eax, esi
imul esi, ebp
imul eax, ebp
add eax, ecx
imul ecx, dword [ebx + 0xfc], 0xff
cdq
add esi, ecx
idiv esi
mov byte [edi], al
mov eax, dword [ebx + 0x100]
imul ecx, dword [ebx + 0xfc], 0xff
imul eax, ebp
add eax, ecx
mov ecx, 0xff
cdq
idiv ecx
mov byte [edi + 3], al
add edi, 4
dec dword [esp + 0x14]
jne 0x50177d
jmp 0x501ad1
mov esi, dword [esp + 0x20]
test esi, esi
je 0x501ad1
mov ecx, 0xff
movzx eax, byte [edi + 2]
imul eax, dword [ebx + 0x100]
add eax, dword [ebx + 0xf0]
cdq
idiv ecx
mov byte [edi + 2], al
movzx eax, byte [edi + 1]
imul eax, dword [ebx + 0x100]
add eax, dword [ebx + 0xf4]
cdq
idiv ecx
mov byte [edi + 1], al
movzx eax, byte [edi]
imul eax, dword [ebx + 0x100]
add eax, dword [ebx + 0xf8]
cdq
idiv ecx
mov byte [edi], al
lea edi, [edi + 3]
dec esi
jne 0x5018b1
jmp 0x501ad1
test al, 0x20
je 0x501a7f
cmp ecx, 4
jne 0x501a23
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x501ad1
mov ecx, dword [ebx + 0xfc]
movzx ebp, byte [edi + 3]
test ecx, ecx
jne 0x501934
movzx eax, byte [edi + 2]
jmp 0x501971
test ebp, ebp
jne 0x501943
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x501971
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi + 2]
imul ecx, dword [ebx + 0xf0], 0xff
imul eax, esi
imul esi, ebp
imul eax, ebp
add eax, ecx
imul ecx, dword [ebx + 0xfc], 0xff
cdq
add esi, ecx
idiv esi
mov byte [edi + 2], al
mov ecx, dword [ebx + 0xfc]
test ecx, ecx
jne 0x501984
movzx eax, byte [edi + 1]
jmp 0x5019c1
test ebp, ebp
jne 0x501993
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x5019c1
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi + 1]
imul ecx, dword [ebx + 0xf4], 0xff
imul eax, esi
imul esi, ebp
imul eax, ebp
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 0x5019d3
movzx eax, byte [edi]
jmp 0x501a0f
test ebp, ebp
jne 0x5019e2
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x501a0f
mov esi, dword [ebx + 0x100]
movzx eax, byte [edi]
imul ecx, dword [ebx + 0xf8], 0xff
imul eax, esi
imul esi, ebp
imul eax, ebp
add eax, ecx
imul ecx, dword [ebx + 0xfc], 0xff
cdq
add esi, ecx
idiv esi
mov byte [edi], al
add edi, 4
dec dword [esp + 0x14]
jne 0x501920
jmp 0x501ad1
mov esi, dword [esp + 0x20]
test esi, esi
je 0x501ad1
mov ecx, 0xff
movzx eax, byte [edi + 2]
imul eax, dword [ebx + 0x100]
add eax, dword [ebx + 0xf0]
cdq
idiv ecx
mov byte [edi + 2], al
movzx eax, byte [edi + 1]
imul eax, dword [ebx + 0x100]
add eax, dword [ebx + 0xf4]
cdq
idiv ecx
mov byte [edi + 1], al
movzx eax, byte [edi]
imul eax, dword [ebx + 0x100]
add eax, dword [ebx + 0xf8]
cdq
idiv ecx
mov byte [edi], al
lea edi, [edi + 3]
dec esi
jne 0x501a34
jmp 0x501ad1
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x501ad1
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, dword [ebx + 0xd4]
dec ecx
jne 0x501a87
jmp 0x501ad1
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x501ad1
push edi
push esi
push ebp
push ebx
call fcn.00501b22
add edi, dword [ebx + 0xd4]
add esp, 0x10
inc ebp
dec dword [esp + 0x14]
jne 0x501ab8
pop edi
pop esi
pop ebp
pop ebx
ret