Function at 0x4b8a10
Capabilities:
Check os version
Get system information on windows

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x53fb9e
mov eax, dword fs:[0]
push eax
sub esp, 0x150
mov eax, dword [0x59024c]
xor eax, ebp
mov dword [ebp - 0x10], eax
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov esi, ecx
mov dword [ebp - 0x18], esi
mov dword [ebp - 0x15c], esi
mov dword [esi], 0
mov dword [esi + 0x1c], 3
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push 0x54cec8
push 0x54ecf8
mov edi, eax
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
test eax, eax
je 0x4b8a99
lea ecx, [ebp - 0x14]
mov dword [ebp - 0x14], 0
push ecx
push edi
call eax
test eax, eax
jne 0x4b8a91
mov eax, 2
jmp 0x4b8a99
xor eax, eax
cmp dword [ebp - 0x14], eax
setne al
mov dword [esi + 0x28], eax
mov dword [esi + 0x3c], 0
mov dword [esi + 0x40], 0xf
mov byte [esi + 0x2c], 0
push 0x118
lea eax, [ebp - 0x154]
mov dword [ebp - 4], 0
push 0
push eax
mov dword [ebp - 0x158], 0x11c
call fcn.004ee390
add esp, 0xc
lea eax, [ebp - 0x158]
push eax
call dword [sym.imp.KERNEL32.dll_GetVersionExW]
mov edx, dword [ebp - 0x154]
mov ecx, dword [ebp - 0x150]
mov eax, dword [ebp - 0x14c]
mov dword [esi + 4], edx
mov dword [esi + 8], ecx
mov dword [esi + 0xc], eax
cmp edx, 5
jne 0x4b8b13
test ecx, ecx
jle 0x4b8b52
xor eax, eax
cmp ecx, 1
setne al
inc eax
mov dword [esi], eax
jmp 0x4b8b52
cmp edx, 6
jne 0x4b8b43
sub ecx, 0
je 0x4b8b3b
sub ecx, 1
je 0x4b8b33
sub ecx, 1
je 0x4b8b2b
mov dword [esi], edx
jmp 0x4b8b52
mov dword [esi], 5
jmp 0x4b8b52
mov dword [esi], 4
jmp 0x4b8b52
mov dword [esi], 3
jmp 0x4b8b52
jle 0x4b8b52
mov dword [ebp - 4], 0
mov dword [esi], 7
movzx eax, word [ebp - 0x44]
xorps xmm0, xmm0
mov dword [esi + 0x14], eax
movzx eax, word [ebp - 0x42]
mov dword [esi + 0x18], eax
lea eax, [ebp - 0x3c]
push eax
movups xmmword [ebp - 0x3c], xmm0
mov dword [ebp - 0x1c], 0
movups xmmword [ebp - 0x2c], xmm0
call dword [sym.imp.KERNEL32.dll_GetNativeSystemInfo]
mov cx, word [ebp - 0x3c]
movzx eax, cx
test eax, eax
je 0x4b8ba3
cmp eax, 6
je 0x4b8b9a
cmp eax, 9
jne 0x4b8baa
mov dword [esi + 0x1c], 1
jmp 0x4b8baa
mov dword [esi + 0x1c], 2
jmp 0x4b8baa
mov dword [esi + 0x1c], 0
mov eax, dword [ebp - 0x28]
mov dword [esi + 0x20], eax
mov eax, dword [ebp - 0x20]
mov dword [esi + 0x24], eax
mov eax, dword [ebp - 0x154]
cmp eax, 6
jne 0x4b8c17
push str.GetProductInfo
push 0x54ecf8
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
lea ecx, [ebp - 0x18]
push ecx
push 0
push 0
push dword [ebp - 0x150]
push dword [ebp - 0x154]
call eax
mov ecx, dword [ebp - 0x18]
dec ecx
cmp ecx, 0x2f
ja case.0x4b8bfe.2
movzx ecx, byte [ecx + 0x4b8c88]
jmp dword [ecx*4 + 0x4b8c7c]
mov dword [esi + 0x10], 2
jmp 0x4b8c5f
mov dword [esi + 0x10], 1
jmp 0x4b8c5f
cmp eax, 5
jne case.0x4b8bfe.2
mov eax, dword [ebp - 0x150]
cmp eax, 2
jne 0x4b8c43
cmp byte [ebp - 0x3e], 1
jne 0x4b8c33
cmp cx, 9
je case.0x4b8bfe.1
mov eax, dword [ebp - 0x40]
shr eax, 0xe
not eax
and eax, 2
mov dword [esi + 0x10], eax
jmp 0x4b8c5f
cmp eax, 1
jne case.0x4b8bfe.2
mov eax, dword [ebp - 0x40]
shr eax, 9
not eax
and eax, 1
mov dword [esi + 0x10], eax
jmp 0x4b8c5f
mov dword [esi + 0x10], 0
mov eax, esi
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
mov ecx, dword [ebp - 0x10]
xor ecx, ebp
call fcn.00448d5d
mov esp, ebp
pop ebp
ret