Function at 0x494f90
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 [0x5a6124]
xor eax, ebp
mov dword [ebp - 4], eax
cmp dword [0x5abb8c], 0
jne 0x495329
push 0x11c
lea eax, [ebp - 0x128]
push 0
push eax
call fcn.00506b00
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 0x49502d
lea ecx, [ebp - 0x128]
push ecx
call eax
test eax, eax
je 0x49502d
lea eax, [ebp - 0x128]
push eax
call dword [sym.imp.KERNEL32.dll_GetVersionExW]
test eax, eax
jne 0x49502d
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.00502bf3
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret
push 0
push 0x57f940
mov ecx, 0x5abb00
mov dword [0x5ab428], 0
call fcn.00407990
mov eax, dword [ebp - 0x118]
sub eax, 0
je 0x49528a
sub eax, 1
je 0x49523a
sub eax, 1
je 0x49506f
push 0x57f940
jmp 0x495299
mov eax, dword [ebp - 0x124]
cmp eax, 4
ja 0x49508e
mov dword [0x5ab428], 0x40
push str.Windows_NT
jmp 0x495299
cmp eax, 5
jne 0x495106
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x4950b1
mov dword [0x5ab428], 0x80
push str.Windows_2000
jmp 0x495299
cmp eax, 1
jne 0x4950ca
mov dword [0x5ab428], 0x100
push str.Windows_XP
jmp 0x495299
cmp eax, 2
jne 0x4952a3
cmp byte [ebp - 0xe], 1
mov ecx, 0x5abb00
jne 0x4950f2
mov dword [0x5ab428], 0x100
push str.Windows_XP
jmp 0x49529e
mov dword [0x5ab428], 0x200
push str.Windows_2003
jmp 0x49529e
cmp eax, 6
jne 0x4951f7
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x49514c
cmp byte [ebp - 0xe], 1
mov ecx, 0x5abb00
jne 0x495138
mov dword [0x5ab428], 0x400
push str.Windows_Vista
jmp 0x49529e
mov dword [0x5ab428], 0x8000
push str.Windows_Server_2008
jmp 0x49529e
cmp eax, 1
jne 0x495183
mov ecx, 0x5abb00
cmp byte [ebp - 0xe], al
je 0x49516f
mov dword [0x5ab428], 0x8000
push str.Windows_Server_2008_R2
jmp 0x49529e
mov dword [0x5ab428], 0x800
push str.Windows_7
jmp 0x49529e
cmp eax, 2
jne 0x4951bb
cmp byte [ebp - 0xe], 1
mov ecx, 0x5abb00
jne 0x4951a7
mov dword [0x5ab428], 0x1000
push str.Windows_8
jmp 0x49529e
mov dword [0x5ab428], 0x10000
push str.Windows_Server_2012
jmp 0x49529e
cmp eax, 3
jne 0x4952a3
cmp byte [ebp - 0xe], 1
mov ecx, 0x5abb00
jne 0x4951e3
mov dword [0x5ab428], 0x2000
push str.Windows_8.1
jmp 0x49529e
mov dword [0x5ab428], 0x10000
push str.Windows_Server_2012_R2
jmp 0x49529e
cmp eax, 0xa
jne 0x4952a3
cmp dword [ebp - 0x120], 0
jne 0x4952a3
cmp byte [ebp - 0xe], 1
mov ecx, 0x5abb00
jne 0x495229
mov dword [0x5ab428], 0x4000
push str.Windows_10
jmp 0x49529e
mov dword [0x5ab428], 0x20000
push str.Windows_Server_2016
jmp 0x49529e
cmp dword [ebp - 0x124], 4
jne 0x4952a3
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x49525e
mov dword [0x5ab428], 8
push str.Windows_9x
jmp 0x495299
cmp eax, 0xa
jne 0x495274
mov dword [0x5ab428], 8
push str.Windows_9x
jmp 0x495299
cmp eax, 0x5a
jne 0x4952a3
mov dword [0x5ab428], 0x20
push str.Windows_ME
jmp 0x495299
mov dword [0x5ab428], 1
push str.Windows_3.2
mov ecx, 0x5abb00
call fcn.00407b00
xorps xmm0, xmm0
mov dword [ebp - 0x140], 0
push 0x585d78
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 0x4952e4
lea ecx, [ebp - 0x160]
push ecx
call eax
jmp 0x4952f1
lea eax, [ebp - 0x160]
push eax
call dword [sym.imp.KERNEL32.dll_GetSystemInfo]
mov ax, word [ebp - 0x160]
cmp ax, 9
je 0x495315
cmp ax, 6
je 0x495315
test ax, ax
jne 0x49531f
mov dword [0x5ab424], 0
jmp 0x49531f
mov dword [0x5ab424], 1
mov dword [0x5abb8c], 1
mov ecx, dword [ebp - 4]
mov eax, 1
xor ecx, ebp
call fcn.00502bf3
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret