Function at 0x401690
Capabilities:
Encode data using xor
Encrypt data using aes
Reference aes constants

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x18
push ebx
mov ebx, ecx
push esi
push edi
mov dword [ebp - 0x18], ebx
mov dword [ebx + 0x3cc], 0x10
lea eax, [ebx + 0x3f4]
mov dword [ebx + 0x3c8], 0x10
movups xmm0, xmmword [str.sctfsctfsctfsctf]
movups xmmword [ebx + 0x3d4], xmm0
push dword [ebx + 0x3cc]
push str.sctfsctfsctfsctf
push eax
call sub.VCRUNTIME140.dll_memcpy
mov eax, dword [ebx + 0x3c8]
add esp, 0xc
cmp eax, 0x10
je 0x4016ff
cmp eax, 0x18
je 0x4016f1
mov eax, 0xe
jmp 0x40171e
xor eax, eax
cmp dword [ebx + 0x3cc], 0x20
sete al
jmp 0x401717
mov ecx, dword [ebx + 0x3cc]
cmp ecx, 0x10
jne 0x40170f
lea eax, [ecx - 6]
jmp 0x40171e
xor eax, eax
cmp ecx, 0x18
setne al
lea eax, [eax*2 + 0xc]
mov dword [ebx + 0x3d0], eax
xor esi, esi
mov eax, dword [ebx + 0x3cc]
cdq
and edx, 3
lea ecx, [edx + eax]
mov eax, dword [ebx + 0x3d0]
sar ecx, 2
mov dword [ebp - 4], ecx
test eax, eax
js 0x401761
lea edx, [ebx + 8]
test ecx, ecx
jle 0x401753
xor eax, eax
mov edi, edx
rep stosd dword es:[edi], eax
mov ecx, dword [ebp - 4]
mov eax, dword [ebx + 0x3d0]
inc esi
add edx, 0x20
cmp esi, eax
jle 0x401746
xor edx, edx
test eax, eax
js 0x40178b
lea esi, [ebx + 0x1e8]
nop dword [eax]
test ecx, ecx
jle 0x40177d
xor eax, eax
mov edi, esi
rep stosd dword es:[edi], eax
mov ecx, dword [ebp - 4]
mov eax, dword [ebx + 0x3d0]
inc edx
add esi, 0x20
cmp edx, eax
jle 0x401770
inc eax
mov esi, str.sycloversyclover
imul eax, ecx
mov dword [ebp - 8], eax
mov eax, dword [ebx + 0x3c8]
cdq
and edx, 3
add eax, edx
lea edx, [ebx + 0x414]
sar eax, 2
mov edi, edx
mov dword [ebp - 0x14], eax
mov dword [ebp - 0x10], edx
test eax, eax
jle 0x4017fe
mov ebx, eax
nop word [eax + eax]
movzx eax, byte [esi]
lea esi, [esi + 4]
shl eax, 0x18
lea edi, [edi + 4]
mov dword [edi - 4], eax
movzx edx, byte [esi - 3]
shl edx, 0x10
or edx, eax
mov dword [edi - 4], edx
movzx ecx, byte [esi - 2]
shl ecx, 8
or ecx, edx
mov dword [edi - 4], ecx
movzx eax, byte [esi - 1]
or eax, ecx
mov dword [edi - 4], eax
sub ebx, 1
jne 0x4017c0
mov ebx, dword [ebp - 0x18]
mov ecx, dword [ebp - 4]
mov edx, dword [ebp - 0x10]
mov esi, dword [ebp - 0x14]
xor edi, edi
test esi, esi
jle 0x401852
mov dword [ebp - 0xc], edx
nop word [eax + eax]
cmp edi, dword [ebp - 8]
jge 0x4019d0
mov eax, edi
inc edi
cdq
idiv ecx
mov ecx, dword [ebp - 0xc]
mov ecx, dword [ecx]
lea esi, [edx + eax*8]
mov dword [ebx + esi*4 + 8], ecx
mov ecx, dword [ebx + 0x3d0]
mov esi, dword [ebp - 0x14]
sub ecx, eax
lea ecx, [edx + ecx*8]
mov edx, dword [ebp - 0xc]
mov eax, dword [edx]
add edx, 4
mov dword [ebx + ecx*4 + 0x1e8], eax
mov ecx, dword [ebp - 4]
mov dword [ebp - 0xc], edx
cmp edi, esi
jl 0x401810
cmp edi, dword [ebp - 8]
jge 0x4019d0
mov dword [ebp - 0xc], 0x406b40
mov edx, dword [ebx + esi*4 + 0x410]
mov eax, edx
sar eax, 0x10
movzx eax, al
movsx ecx, byte [eax + 0x405de0]
mov eax, dword [ebp - 0xc]
inc dword [ebp - 0xc]
movsx eax, byte [eax]
xor ecx, eax
mov eax, edx
sar eax, 8
movzx eax, al
shl ecx, 8
movzx eax, byte [eax + 0x405de0]
xor ecx, eax
movzx eax, dl
shl ecx, 8
sar edx, 0x18
movzx eax, byte [eax + 0x405de0]
xor ecx, eax
movzx eax, dl
shl ecx, 8
movzx eax, byte [eax + 0x405de0]
xor ecx, eax
lea eax, [ebx + 0x414]
xor dword [eax], ecx
cmp esi, 8
je 0x4018ea
cmp esi, 1
jle 0x401974
lea ecx, [ebx + 0x418]
lea edx, [esi - 1]
mov eax, dword [ecx - 4]
lea ecx, [ecx + 4]
xor dword [ecx - 4], eax
sub edx, 1
jne 0x4018d7
jmp 0x40196e
lea eax, [ebx + 0x418]
mov edx, 3
mov ecx, dword [eax - 4]
lea eax, [eax + 4]
xor dword [eax - 4], ecx
sub edx, 1
jne 0x4018f5
mov edx, dword [ebx + 0x420]
mov eax, edx
sar eax, 0x18
movzx eax, al
movsx ecx, byte [eax + 0x405de0]
mov eax, edx
sar eax, 0x10
movzx eax, al
shl ecx, 8
movzx eax, byte [eax + 0x405de0]
xor ecx, eax
mov eax, edx
sar eax, 8
movzx eax, al
shl ecx, 8
movzx eax, byte [eax + 0x405de0]
xor ecx, eax
movzx eax, dl
shl ecx, 8
mov edx, 3
movzx eax, byte [eax + 0x405de0]
xor ecx, eax
xor dword [ebx + 0x424], ecx
lea ecx, [ebx + 0x428]
mov eax, dword [ecx - 4]
lea ecx, [ecx + 4]
xor dword [ecx - 4], eax
sub edx, 1
jne 0x401960
lea eax, [ebx + 0x414]
mov dword [ebp - 0x18], 0
test esi, esi
jle 0x4019c7
mov ecx, eax
mov dword [ebp - 0x10], eax
cmp edi, dword [ebp - 8]
jge 0x4019d0
mov eax, edi
mov ecx, dword [ecx]
cdq
inc edi
idiv dword [ebp - 4]
lea esi, [edx + eax*8]
mov dword [ebx + esi*4 + 8], ecx
mov ecx, dword [ebx + 0x3d0]
mov esi, dword [ebp - 0x14]
sub ecx, eax
mov eax, dword [ebp - 0x10]
lea ecx, [edx + ecx*8]
mov eax, dword [eax]
mov dword [ebx + ecx*4 + 0x1e8], eax
mov eax, dword [ebp - 0x18]
mov ecx, dword [ebp - 0x10]
inc eax
add ecx, 4
mov dword [ebp - 0x18], eax
mov dword [ebp - 0x10], ecx
cmp eax, esi
jl 0x401984
cmp edi, dword [ebp - 8]
jl 0x401862
mov ecx, 1
mov dword [ebp - 0x18], ecx
cmp dword [ebx + 0x3d0], ecx
jle 0x401a64
mov eax, dword [ebp - 4]
lea edx, [ebx + 0x208]
mov dword [ebp - 0x14], edx
test eax, eax
jle 0x401a45
mov esi, edx
mov edi, eax
mov edx, dword [esi]
lea esi, [esi + 4]
mov eax, edx
sar eax, 0x18
movzx ecx, al
mov eax, edx
sar eax, 0x10
movzx eax, al
mov ecx, dword [ecx*4 + 0x406f60]
xor ecx, dword [eax*4 + 0x405ee0]
mov eax, edx
sar eax, 8
movzx eax, al
xor ecx, dword [eax*4 + 0x4066e0]
movzx eax, dl
xor ecx, dword [eax*4 + 0x406b60]
mov dword [esi - 4], ecx
sub edi, 1
jne 0x4019f8
mov eax, dword [ebp - 4]
mov ecx, dword [ebp - 0x18]
mov edx, dword [ebp - 0x14]
inc ecx
add edx, 0x20
mov dword [ebp - 0x18], ecx
mov dword [ebp - 0x14], edx
cmp ecx, dword [ebx + 0x3d0]
jl 0x4019f0
pop edi
pop esi
mov byte [ebx + 4], 1
pop ebx
mov esp, ebp
pop ebp
ret 0x10
pop edi
pop esi
mov byte [ebx + 4], cl
pop ebx
mov esp, ebp
pop ebp
ret 0x10