Function at 0x430da0
Capabilities:
Check os version
Get system information on windows

Disassembly:
push ebx
mov ebx, esp
sub esp, 8
and esp, 0xfffffff0
add esp, 4
push ebp
mov ebp, dword [ebx + 4]
mov dword [esp + 4], ebp
mov ebp, esp
sub esp, 0x160
mov eax, dword [0x4b81bc]
xor eax, ebp
mov dword [ebp - 4], eax
cmp dword [0x4bda9c], 0
jne 0x43109f
push 0x11c
lea eax, [ebp - 0x128]
push 0
push eax
call fcn.0046ce30
add esp, 0xc
mov dword [ebp - 0x128], 0x11c
push str.RtlGetVersion
push str.NtDll.dll
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
test eax, eax
je 0x430e3d
lea ecx, [ebp - 0x128]
push ecx
call eax
test eax, eax
je 0x430e3d
lea eax, [ebp - 0x128]
push eax
call dword [sym.imp.KERNEL32.dll_GetVersionExW]
test eax, eax
jne 0x430e3d
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.00439921
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret
push 0
push 0x4a78a8
mov ecx, 0x4bda50
mov dword [0x4bd43c], 0
call fcn.00403a60
mov eax, dword [ebp - 0x118]
sub eax, 0
je 0x431000
sub eax, 1
je 0x430fb0
sub eax, 1
je 0x430e7f
push 0x4a78a8
jmp 0x43100f
mov eax, dword [ebp - 0x124]
cmp eax, 4
ja 0x430e9e
mov dword [0x4bd43c], 0x40
push str.Windows_NT
jmp 0x43100f
cmp eax, 5
jne 0x430ef7
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x430ec1
mov dword [0x4bd43c], 0x80
push str.Windows_2000
jmp 0x43100f
cmp eax, 1
jne 0x430eda
mov dword [0x4bd43c], 0x100
push str.Windows_XP
jmp 0x43100f
cmp eax, 2
jne 0x431019
mov dword [0x4bd43c], 0x200
push str.Windows_2003
jmp 0x43100f
cmp eax, 6
jne 0x430fa2
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x430f1e
mov dword [0x4bd43c], 0x400
push str.Windows_Vista
jmp 0x43100f
cmp eax, 1
jne 0x430f37
mov dword [0x4bd43c], 0x800
push str.Windows_7
jmp 0x43100f
cmp eax, 2
jne 0x430f50
mov dword [0x4bd43c], 0x1000
push str.Windows_8
jmp 0x43100f
cmp eax, 3
jne 0x430f69
mov dword [0x4bd43c], 0x2000
push str.Windows_8.1
jmp 0x43100f
cmp eax, 4
jne 0x431019
mov eax, dword [ebp - 0x11c]
cmp eax, 0x2671
je 0x430f91
cmp eax, 0x2684
je 0x430f91
cmp eax, 0x2697
jne 0x431019
mov dword [0x4bd43c], 0x4000
push str.Windows_10
jmp 0x43100f
cmp eax, 0xa
jne 0x431019
cmp dword [ebp - 0x120], 0
jmp 0x430f8b
cmp dword [ebp - 0x124], 4
jne 0x431019
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x430fd4
mov dword [0x4bd43c], 8
push str.Windows_9x
jmp 0x43100f
cmp eax, 0xa
jne 0x430fea
mov dword [0x4bd43c], 8
push str.Windows_9x
jmp 0x43100f
cmp eax, 0x5a
jne 0x431019
mov dword [0x4bd43c], 0x20
push str.Windows_ME
jmp 0x43100f
mov dword [0x4bd43c], 1
push str.Windows_3.2
mov ecx, 0x4bda50
call fcn.00403830
xorps xmm0, xmm0
mov dword [ebp - 0x140], 0
push 0x4ab060
push str.kernel32.dll
movaps xmmword [ebp - 0x160], xmm0
movaps xmmword [ebp - 0x150], xmm0
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
test eax, eax
je 0x43105a
lea ecx, [ebp - 0x160]
push ecx
call eax
jmp 0x431067
lea eax, [ebp - 0x160]
push eax
call dword [sym.imp.KERNEL32.dll_GetSystemInfo]
mov ax, word [ebp - 0x160]
cmp ax, 9
je 0x43108b
cmp ax, 6
je 0x43108b
test ax, ax
jne 0x431095
mov dword [0x4bd334], 0
jmp 0x431095
mov dword [0x4bd334], 1
mov dword [0x4bda9c], 1
mov ecx, dword [ebp - 4]
mov eax, 1
xor ecx, ebp
call fcn.00439921
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret