Function at 0x647e90
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x18
call fcn.005a9fc0
mov edx, dword [esp + 0x28]
xor ecx, ecx
push esi
mov esi, dword [esp + 0x20]
mov eax, dword [esi + 0x170]
mov dword [esp + 0x10], eax
mov eax, dword [esi + 0x174]
mov dword [esp + 0xc], eax
mov eax, edx
add eax, dword [esi + 0x38]
adc ecx, dword [esi + 0x3c]
cmp ecx, 0xf
ja 0x648217
jb 0x647ed5
cmp eax, 0xffffffe0
ja 0x648217
cmp dword [esi + 0x16c], 0
mov dword [esi + 0x38], eax
mov eax, dword [esi + 0x168]
mov dword [esi + 0x3c], ecx
mov dword [esp + 4], eax
je 0x647f4c
test edx, edx
jne 0x647f13
lea eax, [esi + 0x60]
push eax
lea eax, [esi + 0x40]
push eax
call fcn.006493f0
add esp, 8
mov dword [esi + 0x16c], 0
xor eax, eax
pop esi
add esp, 0x18
ret
movups xmm0, xmmword [esi + 0x40]
mov dword [esp + 4], 0x10
movups xmmword [esi + 0x178], xmm0
mov dword [esi + 0x40], 0
mov dword [esi + 0x44], 0
mov dword [esi + 0x48], 0
mov dword [esi + 0x4c], 0
mov dword [esi + 0x16c], 0
movzx eax, byte [esi + 0xd]
push ebx
movzx ebx, byte [esi + 0xc]
shl ebx, 8
or ebx, eax
movzx eax, byte [esi + 0xe]
shl ebx, 8
or ebx, eax
movzx eax, byte [esi + 0xf]
shl ebx, 8
or ebx, eax
mov eax, dword [esp + 8]
push ebp
mov ebp, dword [esp + 0x30]
mov ecx, eax
and ecx, 0xf
push edi
mov edi, dword [esp + 0x30]
mov dword [esp + 0x14], ecx
je 0x647fe9
test edx, edx
je 0x647fbf
mov cl, byte [edi]
dec edx
mov byte [eax + esi + 0x178], cl
inc edi
mov eax, dword [esp + 0x14]
mov dword [esp + 0x38], edx
mov al, byte [eax + esi + 0x10]
xor al, cl
mov ecx, dword [esp + 0x14]
mov byte [ebp], al
inc ecx
mov eax, dword [esp + 0x10]
inc ebp
inc eax
and ecx, 0xf
mov dword [esp + 0x10], eax
mov dword [esp + 0x14], ecx
jne 0x647f85
jmp 0x647fc7
test ecx, ecx
jne 0x6481f3
push eax
lea eax, [esi + 0x178]
push eax
lea eax, [esi + 0x60]
push eax
lea eax, [esi + 0x40]
push eax
call fcn.006491b0
mov edx, dword [esp + 0x48]
add esp, 0x10
xor eax, eax
mov dword [esp + 0x10], eax
cmp edx, 0x10
jb 0x648014
test eax, eax
je 0x648014
push eax
lea eax, [esi + 0x178]
push eax
lea eax, [esi + 0x60]
push eax
lea eax, [esi + 0x40]
push eax
call fcn.006491b0
mov edx, dword [esp + 0x48]
add esp, 0x10
xor eax, eax
mov dword [esp + 0x10], eax
cmp edx, 0xc00
jb 0x6480c8
mov eax, 0xaaaaaaab
lea ecx, [esi + 0x60]
mul edx
shr edx, 0xb
mov dword [esp + 0x24], edx
push 0xc00
push edi
push ecx
lea eax, [esi + 0x40]
push eax
call fcn.006491b0
add esp, 0x10
mov dword [esp + 0x20], 0xc0
nop dword [eax]
push dword [esp + 0x18]
lea eax, [esi + 0x10]
push eax
push esi
call dword [esp + 0x28]
inc ebx
add esp, 0xc
mov eax, ebx
mov byte [esi + 0xf], bl
shr eax, 0x18
mov byte [esi + 0xc], al
mov eax, ebx
shr eax, 0x10
mov byte [esi + 0xd], al
mov eax, ebx
shr eax, 8
mov byte [esi + 0xe], al
mov eax, dword [esi + 0x10]
xor eax, dword [edi]
mov dword [ebp], eax
mov eax, dword [edi + 4]
xor eax, dword [esi + 0x14]
mov dword [ebp + 4], eax
mov eax, dword [edi + 8]
xor eax, dword [esi + 0x18]
mov dword [ebp + 8], eax
mov eax, dword [edi + 0xc]
add edi, 0x10
xor eax, dword [esi + 0x1c]
mov dword [ebp + 0xc], eax
add ebp, 0x10
sub dword [esp + 0x20], 1
jne 0x648050
mov edx, dword [esp + 0x38]
lea ecx, [esi + 0x60]
sub edx, 0xc00
sub dword [esp + 0x24], 1
mov dword [esp + 0x38], edx
jne 0x648031
mov eax, edx
and eax, 0xfffffff0
je 0x64815f
push eax
push edi
lea eax, [esi + 0x60]
push eax
lea eax, [esi + 0x40]
push eax
call fcn.006491b0
mov edx, dword [esp + 0x48]
add esp, 0x10
cmp edx, 0x10
jb 0x64815f
shr edx, 4
lea eax, [esi + 0x10]
mov dword [esp + 0x24], edx
push dword [esp + 0x18]
push eax
push esi
call dword [esp + 0x28]
inc ebx
mov edx, dword [esp + 0x44]
mov eax, ebx
mov byte [esi + 0xf], bl
shr eax, 0x18
sub edx, 0x10
mov byte [esi + 0xc], al
add esp, 0xc
mov eax, ebx
mov dword [esp + 0x38], edx
shr eax, 0x10
mov byte [esi + 0xd], al
mov eax, ebx
shr eax, 8
mov byte [esi + 0xe], al
mov eax, dword [esi + 0x10]
xor eax, dword [edi]
mov dword [ebp], eax
mov eax, dword [edi + 4]
xor eax, dword [esi + 0x14]
mov dword [ebp + 4], eax
mov eax, dword [edi + 8]
xor eax, dword [esi + 0x18]
mov dword [ebp + 8], eax
mov eax, dword [edi + 0xc]
add edi, 0x10
xor eax, dword [esi + 0x1c]
mov dword [ebp + 0xc], eax
add ebp, 0x10
sub dword [esp + 0x24], 1
lea eax, [esi + 0x10]
jne 0x6480f8
test edx, edx
je 0x648203
push dword [esp + 0x18]
lea eax, [esi + 0x10]
push eax
push esi
call dword [esp + 0x28]
mov ecx, dword [esp + 0x20]
inc ebx
mov edx, dword [esp + 0x44]
mov eax, ebx
shr eax, 0x18
add esp, 0xc
mov byte [esi + 0xc], al
mov eax, ebx
shr eax, 0x10
mov byte [esi + 0xd], al
mov eax, ebx
shr eax, 8
mov byte [esi + 0xe], al
lea eax, [ecx + ebp]
mov dword [esp + 0x20], eax
lea eax, [esi + 0x10]
add eax, ecx
mov byte [esi + 0xf], bl
mov ebx, dword [esp + 0x10]
sub edi, ebp
lea ebp, [esi + 0x178]
mov dword [esp + 0x24], eax
mov esi, dword [esp + 0x20]
nop dword [eax + eax]
mov cl, byte [edi + esi]
lea esi, [esi + 1]
mov byte [ebx + ebp], cl
inc ebx
mov al, byte [eax]
xor al, cl
mov byte [esi - 1], al
mov eax, dword [esp + 0x24]
inc eax
mov dword [esp + 0x24], eax
sub edx, 1
jne 0x6481c0
mov esi, dword [esp + 0x2c]
xor eax, eax
pop edi
pop ebp
mov dword [esi + 0x168], ebx
pop ebx
pop esi
add esp, 0x18
ret
pop edi
pop ebp
mov dword [esi + 0x168], eax
xor eax, eax
pop ebx
pop esi
add esp, 0x18
ret
mov ebx, dword [esp + 0x10]
xor eax, eax
pop edi
pop ebp
mov dword [esi + 0x168], ebx
pop ebx
pop esi
add esp, 0x18
ret
or eax, 0xffffffff
pop esi
add esp, 0x18
ret