Function at 0x45ce90
Capabilities:
Encode data using xor
Generate random numbers using a mersenne twister

Disassembly:
push ebx
mov ebx, esp
sub esp, 8
and esp, 0xfffffff8
add esp, 4
push ebp
mov ebp, dword [ebx + 4]
mov dword [esp + 4], ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x4dcfff
mov eax, dword fs:[0]
push eax
push ebx
mov eax, 0x1408
call fcn.004dbf10
mov eax, dword [0x509040]
xor eax, ebp
mov dword [ebp - 0x14], eax
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov esi, ecx
mov dword [ebp - 0x13d4], esi
mov dword [ebp - 0x13c4], esi
mov dword [ebp - 4], 0
xor ecx, ecx
mov dword [ebp - 0x13d8], esi
mov dword [ebp - 0x13c8], 0
movaps xmm0, xmmword [0x4ffb90]
movups xmmword [ebp - 0x1418], xmm0
movaps xmm0, xmmword [str.32107654_:9]
movups xmmword [ebp - 0x1408], xmm0
movaps xmm0, xmmword [0x4ff4a0]
movups xmmword [ebp - 0x13f8], xmm0
movaps xmm0, xmmword [0x4fecd0]
movups xmmword [ebp - 0x13e8], xmm0
nop dword [eax]
nop dword [eax + eax]
mov al, byte [ebp - 0x1418]
xor byte [ebp + ecx - 0x1417], al
inc ecx
cmp ecx, 0x3e
jb 0x45cf40
xorps xmm0, xmm0
mov byte [ebp - 0x13d9], 0
lea ecx, [ebp - 0x1417]
mov dword [ebp - 0x20], 0
movups xmmword [ebp - 0x30], xmm0
mov dword [ebp - 0x1c], 0
lea edx, [ecx + 1]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x45cf78
sub ecx, edx
lea eax, [ebp - 0x1417]
push ecx
push eax
lea ecx, [ebp - 0x30]
call fcn.0045c380
mov dword [ebp - 4], 1
call dword [sym.imp.MSVCP140.dll_unsigned_int___cdecl_std::_Random_device_void_]
mov edx, eax
mov dword [ebp - 0x34], 0xffffffff
mov dword [ebp - 0x13b4], edx
mov ecx, 1
mov eax, edx
shr eax, 0x1e
xor eax, edx
imul edx, eax, 0x6c078965
add edx, ecx
mov dword [ebp + ecx*4 - 0x13b4], edx
inc ecx
cmp ecx, 0x270
jb 0x45cfb2
mov eax, dword [ebp - 0x20]
xorps xmm0, xmm0
movups xmmword [esi], xmm0
mov dword [esi + 0x10], 0
dec eax
mov dword [esi + 0x14], 0
mov dword [esi + 0x10], 0
mov dword [esi + 0x14], 0xf
mov dword [ebp - 0x13b8], 0x270
mov dword [ebp - 0x13c0], eax
mov byte [esi], 0
mov byte [ebp - 0x13bc], 0
mov ecx, esi
push dword [ebp - 0x13bc]
mov dword [ebp - 0x13c8], 1
push 0x40
call fcn.0045eb20
mov eax, dword [ebp - 0x13c0]
mov edi, 0x40
cmp eax, 0x80000000
mov dword [esi + 0x10], 0
mov dword [ebp - 0x13bc], edi
cmovae eax, eax
mov dword [ebp - 0x13c0], eax
lea ecx, [ebp - 0x13b8]
cmp eax, 0xffffffff
jne 0x45d064
call fcn.0045ef10
mov ecx, eax
jmp 0x45d0b3
lea edi, [eax + 1]
call fcn.0045ef10
mul edi
mov dword [ebp - 0x13cc], eax
mov ecx, edx
cmp eax, edi
jae 0x45d0ad
mov eax, edi
xor edx, edx
neg eax
div edi
mov eax, edx
mov dword [ebp - 0x13d0], eax
cmp dword [ebp - 0x13cc], eax
jae 0x45d0ad
mov esi, edx
lea ecx, [ebp - 0x13b8]
call fcn.0045ef10
mul edi
mov ecx, edx
cmp eax, esi
jb 0x45d094
mov esi, dword [ebp - 0x13d4]
mov edi, dword [ebp - 0x13bc]
cmp dword [ebp - 0x1c], 0xf
lea eax, [ebp - 0x30]
mov edx, dword [esi + 0x14]
cmova eax, dword [ebp - 0x30]
mov al, byte [ecx + eax]
mov ecx, dword [esi + 0x10]
mov byte [ebp - 0x18], al
cmp ecx, edx
jae 0x45d0ea
lea eax, [ecx + 1]
mov dword [esi + 0x10], eax
mov eax, esi
cmp edx, 0xf
jbe 0x45d0dd
mov eax, dword [esi]
add eax, ecx
mov cl, byte [ebp - 0x18]
mov byte [eax + 1], 0
mov byte [eax], cl
jmp 0x45d102
push dword [ebp - 0x18]
mov byte [ebp - 0x13c4], 0
push dword [ebp - 0x13c4]
push ecx
mov ecx, esi
call fcn.0045ec40
mov eax, dword [ebp - 0x13c0]
sub edi, 1
mov dword [ebp - 0x13bc], edi
jne 0x45d050
mov eax, dword [ebp - 0x1c]
cmp eax, 0xf
jbe 0x45d14f
mov edx, dword [ebp - 0x30]
lea ecx, [eax + 1]
mov eax, edx
cmp ecx, 0x1000
jb 0x45d145
mov edx, dword [eax - 4]
add ecx, 0x23
sub eax, edx
add eax, 0xfffffffc
cmp eax, 0x1f
jbe 0x45d145
call dword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
push ecx
push edx
call fcn.00487522
add esp, 8
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
mov ecx, dword [ebp - 0x14]
xor ecx, ebp
call fcn.004870f9
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret