Function at 0x4eec60
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 [0x5b3074]
xor eax, ebp
mov dword [ebp - 4], eax
cmp dword [0x5dd50c], 0
jne 0x4ef02a
push 0x11c
lea eax, [ebp - 0x128]
push 0
push eax
call fcn.00517390
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 0x4eecfd
lea ecx, [ebp - 0x128]
push ecx
call eax
test eax, eax
je 0x4eecfd
lea eax, [ebp - 0x128]
push eax
call dword [sym.imp.KERNEL32.dll_GetVersionExW]
test eax, eax
jne 0x4eecfd
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.00510209
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret
push 0
push 0x5894e4
mov ecx, 0x5dd404
mov dword [0x5dd284], 0
call fcn.00409323
mov eax, dword [ebp - 0x118]
sub eax, 0
je 0x4eef89
sub eax, 1
je 0x4eef46
sub eax, 1
je 0x4eed41
push 0
push 0x5894e4
jmp 0x4eef9a
mov eax, dword [ebp - 0x124]
cmp eax, 4
ja 0x4eed62
push 0xa
mov dword [0x5dd284], 0x40
push str.Windows_NT
jmp 0x4eef9a
cmp eax, 5
jne 0x4eede2
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x4eed87
push 0xc
mov dword [0x5dd284], 0x80
push str.Windows_2000
jmp 0x4eef9a
cmp eax, 1
jne 0x4eeda2
push 0xa
mov dword [0x5dd284], 0x100
push str.Windows_XP
jmp 0x4eef9a
cmp eax, 2
jne 0x4eefa4
cmp byte [ebp - 0xe], 1
mov ecx, 0x5dd404
jne 0x4eedcc
push 0xa
mov dword [0x5dd284], 0x100
push str.Windows_XP
jmp 0x4eef9f
push 0xc
mov dword [0x5dd284], 0x200
push str.Windows_2003
jmp 0x4eef9f
cmp eax, 6
jne 0x4eeee3
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x4eee2c
cmp byte [ebp - 0xe], 1
mov ecx, 0x5dd404
jne 0x4eee16
push 0xd
mov dword [0x5dd284], 0x400
push str.Windows_Vista
jmp 0x4eef9f
push 0x13
mov dword [0x5dd284], 0x8000
push str.Windows_Server_2008
jmp 0x4eef9f
cmp eax, 1
jne 0x4eee67
mov ecx, 0x5dd404
cmp byte [ebp - 0xe], al
je 0x4eee51
push 0x16
mov dword [0x5dd284], 0x8000
push str.Windows_Server_2008_R2
jmp 0x4eef9f
push 9
mov dword [0x5dd284], 0x800
push str.Windows_7
jmp 0x4eef9f
cmp eax, 2
jne 0x4eeea3
cmp byte [ebp - 0xe], 1
mov ecx, 0x5dd404
jne 0x4eee8d
push 9
mov dword [0x5dd284], 0x1000
push str.Windows_8
jmp 0x4eef9f
push 0x13
mov dword [0x5dd284], 0x10000
push str.Windows_Server_2012
jmp 0x4eef9f
cmp eax, 3
jne 0x4eefa4
cmp byte [ebp - 0xe], 1
mov ecx, 0x5dd404
jne 0x4eeecd
push 0xb
mov dword [0x5dd284], 0x2000
push str.Windows_8.1
jmp 0x4eef9f
push 0x16
mov dword [0x5dd284], 0x10000
push str.Windows_Server_2012_R2
jmp 0x4eef9f
cmp eax, 0xa
jne 0x4eefa4
cmp dword [ebp - 0x120], 0
jne 0x4eefa4
cmp byte [ebp - 0xe], 1
jne 0x4eef33
cmp dword [ebp - 0x11c], 0x55f0
mov ecx, 0x5dd404
push eax
jb 0x4eef22
mov dword [0x5dd284], 0x40000
push str.Windows_11
jmp 0x4eef9f
mov dword [0x5dd284], 0x4000
push str.Windows_10
jmp 0x4eef9f
push 0x13
mov dword [0x5dd284], 0x20000
push str.Windows_Server_2016
jmp 0x4eef9a
cmp dword [ebp - 0x124], 4
jne 0x4eefa4
mov eax, dword [ebp - 0x120]
test eax, eax
jne 0x4eef6c
push 0xa
mov dword [0x5dd284], 8
push str.Windows_9x
jmp 0x4eef9a
cmp eax, 0xa
je 0x4eef59
cmp eax, 0x5a
jne 0x4eefa4
push 0xa
mov dword [0x5dd284], 0x20
push str.Windows_ME
jmp 0x4eef9a
push 0xb
mov dword [0x5dd284], 1
push str.Windows_3.2
mov ecx, 0x5dd404
call fcn.00409323
xorps xmm0, xmm0
mov dword [ebp - 0x140], 0
push str.GetNativeSystemInfo
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 0x4eefe5
lea ecx, [ebp - 0x160]
push ecx
call eax
jmp 0x4eeff2
lea eax, [ebp - 0x160]
push eax
call dword [sym.imp.KERNEL32.dll_GetSystemInfo]
mov ax, word [ebp - 0x160]
cmp ax, 9
je 0x4ef016
cmp ax, 6
je 0x4ef016
test ax, ax
jne 0x4ef020
mov dword [0x5dd17c], 0
jmp 0x4ef020
mov dword [0x5dd17c], 1
mov dword [0x5dd50c], 1
mov ecx, dword [ebp - 4]
mov eax, 1
xor ecx, ebp
call fcn.00510209
mov esp, ebp
pop ebp
mov esp, ebx
pop ebx
ret