Function at 0x485ff0
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 [0x50b0c0]
xor eax, ebp
mov dword [ebp - 4], eax
cmp dword [0x520940], 0
jne 0x4863a1
push 0x118
lea eax, [ebp - 0x124]
push 0
push eax
call fcn.004a8730
add esp, 0xc
mov dword [ebp - 0x128], 0x11c
push str.RtlGetVersion
push 0x4f4338
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
test eax, eax
je 0x48608d
lea ecx, [ebp - 0x128]
push ecx
call eax
test eax, eax
je 0x48608d
lea eax, [ebp - 0x128]
push eax
call dword [sym.imp.KERNEL32.dll_GetVersionExW]
test eax, eax
jne 0x48608d
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.004a69a0
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret
push 0
push 0x4ed664
mov ecx, 0x520894
mov dword [0x5208cc], 0
call fcn.00409c60
mov eax, dword [ebp - 0x118]
sub eax, 0
je 0x486300
sub eax, 1
je 0x4862bd
sub eax, 1
je 0x4860d1
push 0
push 0x4ed664
jmp 0x486311
mov eax, dword [ebp - 0x124]
cmp eax, 4
ja 0x4860f2
push 0xa
mov dword [0x5208cc], 0x40
push str.Windows_NT
jmp 0x486311
cmp eax, 5
jne 0x486157
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x486117
push 0xc
mov dword [0x5208cc], 0x80
push str.Windows_2000
jmp 0x486311
cmp eax, 1
je 0x486141
cmp eax, 2
jne 0x48631b
cmp byte [ebp - 0xe], 1
je 0x486141
push 0xc
mov dword [0x5208cc], 0x200
push str.Windows_2003
jmp 0x486311
push 0xa
mov dword [0x5208cc], 0x100
push str.Windows_XP
jmp 0x486311
cmp eax, 6
jne 0x486258
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x4861a1
cmp byte [ebp - 0xe], 1
mov ecx, 0x520894
jne 0x48618b
push 0xd
mov dword [0x5208cc], 0x400
push str.Windows_Vista
jmp 0x486316
push 0x13
mov dword [0x5208cc], 0x8000
push str.Windows_Server_2008
jmp 0x486316
cmp eax, 1
jne 0x4861dc
mov ecx, 0x520894
cmp byte [ebp - 0xe], al
je 0x4861c6
push 0x16
mov dword [0x5208cc], 0x8000
push str.Windows_Server_2008_R2
jmp 0x486316
push 9
mov dword [0x5208cc], 0x800
push str.Windows_7
jmp 0x486316
cmp eax, 2
jne 0x486218
cmp byte [ebp - 0xe], 1
mov ecx, 0x520894
jne 0x486202
push 9
mov dword [0x5208cc], 0x1000
push str.Windows_8
jmp 0x486316
push 0x13
mov dword [0x5208cc], 0x10000
push str.Windows_Server_2012
jmp 0x486316
cmp eax, 3
jne 0x48631b
cmp byte [ebp - 0xe], 1
mov ecx, 0x520894
jne 0x486242
push 0xb
mov dword [0x5208cc], 0x2000
push str.Windows_8.1
jmp 0x486316
push 0x16
mov dword [0x5208cc], 0x10000
push str.Windows_Server_2012_R2
jmp 0x486316
cmp eax, 0xa
jne 0x48631b
cmp dword [ebp - 0x120], 0
jne 0x48631b
cmp byte [ebp - 0xe], 1
jne 0x4862aa
cmp dword [ebp - 0x11c], 0x55f0
jb 0x486295
mov eax, str.Windows_11
mov ecx, 0x40000
push 0xa
mov dword [0x5208cc], ecx
push eax
jmp 0x486311
mov eax, str.Windows_10
mov ecx, 0x4000
push 0xa
mov dword [0x5208cc], ecx
push eax
jmp 0x486311
push 0x13
mov dword [0x5208cc], 0x20000
push str.Windows_Server_2016
jmp 0x486311
cmp dword [ebp - 0x124], 4
jne 0x48631b
mov eax, dword [ebp - 0x120]
test eax, eax
je 0x4862ed
cmp eax, 0xa
je 0x4862ed
cmp eax, 0x5a
jne 0x48631b
push 0xa
mov dword [0x5208cc], 0x20
push str.Windows_ME
jmp 0x486311
push 0xa
mov dword [0x5208cc], 8
push str.Windows_9x
jmp 0x486311
push 0xb
mov dword [0x5208cc], 1
push str.Windows_3.2
mov ecx, 0x520894
call fcn.00409c60
xorps xmm0, xmm0
mov dword [ebp - 0x140], 0
push 0x4f4410
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 0x48635c
lea ecx, [ebp - 0x160]
push ecx
call eax
jmp 0x486369
lea eax, [ebp - 0x160]
push eax
call dword [sym.imp.KERNEL32.dll_GetSystemInfo]
mov ax, word [ebp - 0x160]
cmp ax, 9
je 0x48638d
cmp ax, 6
je 0x48638d
test ax, ax
jne 0x486397
mov dword [0x5208d0], 0
jmp 0x486397
mov dword [0x5208d0], 1
mov dword [0x520940], 1
mov ecx, dword [ebp - 4]
mov eax, 1
xor ecx, ebp
call fcn.004a69a0
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret