Function at 0x502c83
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 0x502ca4
mov eax, dword [ebx + 0x84]
sub eax, esi
dec eax
jmp 0x502ca6
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 0x5030dc
cmp dword [ebx + 0xe4], edx
jne 0x5030dc
mov eax, dword [ebx + 0xd8]
test al, 2
je 0x502d1c
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x503101
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 0x502cf4
jmp 0x503101
test eax, 0x100
je 0x502d5d
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x503101
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 0x502d2f
jmp 0x503101
test al, 8
je 0x502d8c
cmp ecx, 4
jne 0x503101
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x503101
add edi, 3
mov al, byte [ebx + 0xfc]
mov byte [edi], al
lea edi, [edi + 4]
dec ecx
jne 0x502d79
jmp 0x503101
test al, 0x10
je 0x502f2f
cmp ecx, 4
jne 0x502ed0
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x503101
mov ecx, dword [ebx + 0xfc]
movzx ebp, byte [edi + 3]
test ecx, ecx
jne 0x502dc1
movzx eax, byte [edi + 2]
jmp 0x502dfe
test ebp, ebp
jne 0x502dd0
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x502dfe
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 0x502e11
movzx eax, byte [edi + 1]
jmp 0x502e4e
test ebp, ebp
jne 0x502e20
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x502e4e
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 0x502e60
movzx eax, byte [edi]
jmp 0x502e9c
test ebp, ebp
jne 0x502e6f
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x502e9c
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 0x502dad
jmp 0x503101
mov esi, dword [esp + 0x20]
test esi, esi
je 0x503101
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 0x502ee1
jmp 0x503101
test al, 0x20
je 0x5030af
cmp ecx, 4
jne 0x503053
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x503101
mov ecx, dword [ebx + 0xfc]
movzx ebp, byte [edi + 3]
test ecx, ecx
jne 0x502f64
movzx eax, byte [edi + 2]
jmp 0x502fa1
test ebp, ebp
jne 0x502f73
mov eax, dword [ebx + 0xf0]
cdq
idiv ecx
jmp 0x502fa1
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 0x502fb4
movzx eax, byte [edi + 1]
jmp 0x502ff1
test ebp, ebp
jne 0x502fc3
mov eax, dword [ebx + 0xf4]
cdq
idiv ecx
jmp 0x502ff1
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 0x503003
movzx eax, byte [edi]
jmp 0x50303f
test ebp, ebp
jne 0x503012
mov eax, dword [ebx + 0xf8]
cdq
idiv ecx
jmp 0x50303f
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 0x502f50
jmp 0x503101
mov esi, dword [esp + 0x20]
test esi, esi
je 0x503101
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 0x503064
jmp 0x503101
mov ecx, dword [esp + 0x20]
test ecx, ecx
je 0x503101
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 0x5030b7
jmp 0x503101
mov eax, dword [esp + 0x20]
mov dword [esp + 0x14], eax
test eax, eax
je 0x503101
push edi
push esi
push ebp
push ebx
call fcn.00503152
add edi, dword [ebx + 0xd4]
add esp, 0x10
inc ebp
dec dword [esp + 0x14]
jne 0x5030e8
pop edi
pop esi
pop ebp
pop ebx
ret