Function at 0x401a20
Capabilities:
Encode data using xor
Encrypt data using aes
Reference aes constants

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x24
push esi
mov esi, ecx
mov dword [ebp - 0x24], edx
push edi
test esi, esi
je 0x401f59
test edx, edx
je 0x401f59
mov edi, dword [ebp + 8]
test edi, edi
je 0x401f59
mov eax, dword [esi]
mov ecx, eax
rol eax, 8
and eax, 0xff00ff
ror ecx, 8
and ecx, 0xff00ff00
or ecx, eax
mov eax, dword [esi + 4]
xor ecx, dword [edi]
mov dword [ebp - 0x18], ecx
mov ecx, eax
rol eax, 8
and eax, 0xff00ff
ror ecx, 8
and ecx, 0xff00ff00
or ecx, eax
mov eax, dword [esi + 8]
xor ecx, dword [edi + 4]
push ebx
mov ebx, eax
mov dword [ebp - 4], ecx
rol eax, 8
and eax, 0xff00ff
ror ebx, 8
and ebx, 0xff00ff00
or ebx, eax
mov eax, dword [esi + 0xc]
mov edx, eax
xor ebx, dword [edi + 8]
rol eax, 8
and eax, 0xff00ff
mov esi, dword [ebp - 0x18]
ror edx, 8
and edx, 0xff00ff00
or edx, eax
xor edx, dword [edi + 0xc]
mov eax, edx
shr eax, 0x10
movzx ecx, al
mov eax, ebx
shr eax, 8
movzx eax, al
mov ecx, dword [ecx*4 + 0x4167a0]
xor ecx, dword [eax*4 + 0x4163a0]
mov eax, esi
shr eax, 0x18
xor ecx, dword [eax*4 + 0x416ca0]
mov eax, dword [ebp - 4]
movzx eax, al
xor ecx, dword [eax*4 + 0x417cc8]
mov eax, edx
xor ecx, dword [edi + 0x10]
shr eax, 8
mov dword [ebp - 8], ecx
movzx ecx, al
mov eax, esi
shr eax, 0x10
movzx eax, al
mov edi, dword [ecx*4 + 0x4163a0]
xor edi, dword [eax*4 + 0x4167a0]
mov eax, dword [ebp - 4]
shr eax, 0x18
xor edi, dword [eax*4 + 0x416ca0]
movzx eax, bl
xor edi, dword [eax*4 + 0x417cc8]
mov eax, dword [ebp + 8]
xor edi, dword [eax + 0x14]
mov eax, dword [ebp - 4]
shr eax, 0x10
movzx ecx, al
mov eax, esi
shr eax, 8
movzx eax, al
mov dword [ebp - 0xc], edi
mov ecx, dword [ecx*4 + 0x4167a0]
xor ecx, dword [eax*4 + 0x4163a0]
mov eax, ebx
shr eax, 0x18
xor ecx, dword [eax*4 + 0x416ca0]
movzx eax, dl
xor ecx, dword [eax*4 + 0x417cc8]
mov esi, dword [ebp + 8]
mov eax, dword [ebp - 4]
shr eax, 8
shr ebx, 0x10
xor ecx, dword [esi + 0x18]
lea edi, [esi + 0x20]
mov dword [ebp - 0x10], ecx
movzx eax, al
movzx ecx, bl
shr edx, 0x18
mov ecx, dword [ecx*4 + 0x4167a0]
xor ecx, dword [eax*4 + 0x4163a0]
mov eax, dword [ebp - 0x18]
xor ecx, dword [edx*4 + 0x416ca0]
movzx eax, al
mov dword [ebp - 0x18], edi
xor ecx, dword [eax*4 + 0x417cc8]
mov eax, dword [esi + 0xf0]
xor ecx, dword [esi + 0x1c]
sar eax, 1
sub eax, 1
mov dword [ebp - 4], ecx
mov dword [ebp - 0x20], eax
je 0x401dca
nop dword [eax]
mov ebx, dword [ebp - 0x10]
mov eax, ecx
shr eax, 0x10
movzx ecx, al
mov eax, ebx
shr eax, 8
movzx eax, al
mov esi, dword [ebp - 8]
mov ecx, dword [ecx*4 + 0x4167a0]
mov edx, dword [ebp - 0xc]
xor ecx, dword [eax*4 + 0x4163a0]
mov eax, esi
shr eax, 0x18
xor ecx, dword [eax*4 + 0x416ca0]
movzx eax, dl
xor ecx, dword [eax*4 + 0x417cc8]
xor ecx, dword [edi]
mov eax, dword [ebp - 4]
shr eax, 8
mov dword [ebp - 0x1c], ecx
movzx ecx, al
mov eax, esi
shr eax, 0x10
movzx eax, al
mov ecx, dword [ecx*4 + 0x4163a0]
xor ecx, dword [eax*4 + 0x4167a0]
mov eax, edx
shr eax, 0x18
xor ecx, dword [eax*4 + 0x416ca0]
movzx eax, bl
xor ecx, dword [eax*4 + 0x417cc8]
mov eax, edx
xor ecx, dword [edi + 4]
shr eax, 0x10
mov dword [ebp - 0x14], ecx
movzx ecx, al
mov eax, esi
shr eax, 8
movzx eax, al
shr edx, 8
mov ebx, dword [ecx*4 + 0x4167a0]
mov ecx, dword [ebp - 0x10]
xor ebx, dword [eax*4 + 0x4163a0]
mov eax, ecx
shr eax, 0x18
shr ecx, 0x10
movzx ecx, cl
xor ebx, dword [eax*4 + 0x416ca0]
mov eax, dword [ebp - 4]
movzx eax, al
xor ebx, dword [eax*4 + 0x417cc8]
xor ebx, dword [edi + 8]
movzx eax, dl
mov edx, dword [ecx*4 + 0x4167a0]
xor edx, dword [eax*4 + 0x4163a0]
mov eax, dword [ebp - 4]
shr eax, 0x18
xor edx, dword [eax*4 + 0x416ca0]
mov eax, esi
movzx eax, al
mov esi, dword [ebp - 0x1c]
xor edx, dword [eax*4 + 0x417cc8]
xor edx, dword [edi + 0xc]
mov eax, edx
shr eax, 0x10
movzx ecx, al
mov eax, ebx
shr eax, 8
movzx eax, al
mov ecx, dword [ecx*4 + 0x4167a0]
xor ecx, dword [eax*4 + 0x4163a0]
mov eax, esi
shr eax, 0x18
xor ecx, dword [eax*4 + 0x416ca0]
mov eax, dword [ebp - 0x14]
movzx eax, al
xor ecx, dword [eax*4 + 0x417cc8]
mov eax, edx
xor ecx, dword [edi + 0x10]
mov dword [ebp - 8], ecx
shr eax, 8
movzx ecx, al
mov eax, esi
shr eax, 0x10
movzx eax, al
mov ecx, dword [ecx*4 + 0x4163a0]
xor ecx, dword [eax*4 + 0x4167a0]
mov eax, dword [ebp - 0x14]
mov edi, ecx
shr eax, 0x18
mov dword [ebp - 0xc], ecx
xor edi, dword [eax*4 + 0x416ca0]
movzx eax, bl
xor edi, dword [eax*4 + 0x417cc8]
mov eax, dword [ebp - 0x18]
xor edi, dword [eax + 0x14]
mov eax, dword [ebp - 0x14]
shr eax, 0x10
movzx ecx, al
mov eax, esi
shr eax, 8
movzx eax, al
mov dword [ebp - 0xc], edi
mov ecx, dword [ecx*4 + 0x4167a0]
mov edi, dword [ebp - 0x18]
xor ecx, dword [eax*4 + 0x4163a0]
mov eax, ebx
shr eax, 0x18
shr ebx, 0x10
xor ecx, dword [eax*4 + 0x416ca0]
movzx eax, dl
shr edx, 0x18
xor ecx, dword [eax*4 + 0x417cc8]
xor ecx, dword [edi + 0x18]
mov eax, dword [ebp - 0x14]
mov dword [ebp - 0x10], ecx
shr eax, 8
movzx ecx, bl
movzx eax, al
mov ecx, dword [ecx*4 + 0x4167a0]
xor ecx, dword [eax*4 + 0x4163a0]
mov eax, esi
xor ecx, dword [edx*4 + 0x416ca0]
movzx eax, al
xor ecx, dword [eax*4 + 0x417cc8]
xor ecx, dword [edi + 0x1c]
add edi, 0x20
sub dword [ebp - 0x20], 1
mov dword [ebp - 4], ecx
mov dword [ebp - 0x18], edi
jne 0x401bd0
mov eax, ecx
mov ebx, dword [ebp - 0x10]
shr eax, 0x10
movzx eax, al
mov edx, dword [ebp - 0xc]
mov esi, dword [ebp - 0x24]
movzx ecx, byte [eax + 0x416ba0]
mov eax, dword [ebp - 8]
shr eax, 0x18
movzx eax, byte [eax + 0x416ba0]
shl eax, 8
xor ecx, eax
mov eax, ebx
shr eax, 8
movzx eax, al
shl ecx, 8
movzx eax, byte [eax + 0x416ba0]
xor ecx, eax
movzx eax, dl
shl ecx, 8
movzx eax, byte [eax + 0x416ba0]
xor ecx, eax
xor ecx, dword [edi]
mov eax, ecx
rol ecx, 8
ror eax, 8
and ecx, 0xff00ff
and eax, 0xff00ff00
or eax, ecx
mov dword [esi], eax
mov eax, dword [ebp - 8]
shr eax, 0x10
movzx eax, al
movzx ecx, byte [eax + 0x416ba0]
mov eax, edx
shr eax, 0x18
movzx eax, byte [eax + 0x416ba0]
shl eax, 8
xor ecx, eax
mov eax, dword [ebp - 4]
shr eax, 8
movzx eax, al
shl ecx, 8
movzx eax, byte [eax + 0x416ba0]
xor ecx, eax
movzx eax, bl
shl ecx, 8
movzx eax, byte [eax + 0x416ba0]
xor ecx, eax
xor ecx, dword [edi + 4]
mov eax, ecx
rol ecx, 8
ror eax, 8
and ecx, 0xff00ff
and eax, 0xff00ff00
or eax, ecx
mov dword [esi + 4], eax
mov eax, edx
shr eax, 0x10
movzx eax, al
movzx ecx, byte [eax + 0x416ba0]
mov eax, ebx
shr eax, 0x18
movzx eax, byte [eax + 0x416ba0]
shl eax, 8
xor ecx, eax
mov eax, dword [ebp - 8]
shr eax, 8
movzx eax, al
shl ecx, 8
movzx eax, byte [eax + 0x416ba0]
xor ecx, eax
mov eax, dword [ebp - 4]
movzx eax, al
shl ecx, 8
movzx eax, byte [eax + 0x416ba0]
xor ecx, eax
xor ecx, dword [edi + 8]
mov eax, ecx
ror eax, 8
and eax, 0xff00ff00
rol ecx, 8
and ecx, 0xff00ff
shr ebx, 0x10
or eax, ecx
shr edx, 8
mov dword [esi + 8], eax
movzx eax, bl
pop ebx
movzx ecx, byte [eax + 0x416ba0]
mov eax, dword [ebp - 4]
shr eax, 0x18
movzx eax, byte [eax + 0x416ba0]
shl eax, 8
xor ecx, eax
movzx eax, dl
shl ecx, 8
movzx eax, byte [eax + 0x416ba0]
xor ecx, eax
mov eax, dword [ebp - 8]
movzx eax, al
shl ecx, 8
movzx eax, byte [eax + 0x416ba0]
xor ecx, eax
xor ecx, dword [edi + 0xc]
mov eax, ecx
rol ecx, 8
ror eax, 8
and ecx, 0xff00ff
and eax, 0xff00ff00
or eax, ecx
mov dword [esi + 0xc], eax
xor eax, eax
pop edi
pop esi
mov esp, ebp
pop ebp
ret
pop edi
or eax, 0xffffffff
pop esi
mov esp, ebp
pop ebp
ret