Function at 0x4146a0
Capabilities:
Check os version
Query or enumerate registry value

Disassembly:
sub esp, 0x324
push ebx
push ebp
push esi
mov esi, dword [sym.imp.KERNEL32.dll_GetVersionExA]
push edi
lea ebx, [ecx + 8]
mov ecx, 0x27
xor eax, eax
lea edi, [esp + 0x18]
rep stosd dword es:[edi], eax
lea eax, [esp + 0x18]
mov dword [esp + 0x18], 0x9c
push eax
call esi
mov ebp, eax
test ebp, ebp
jne 0x4146f3
lea ecx, [esp + 0x18]
mov dword [esp + 0x18], 0x94
push ecx
call esi
test eax, eax
jne 0x4146f3
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x324
ret
mov eax, dword [esp + 0x28]
sub eax, 0
je 0x414b95
dec eax
je 0x414afd
dec eax
jne 0x414bbf
mov eax, dword [esp + 0x1c]
mov ecx, dword [esp + 0x20]
cmp eax, 5
jne 0x41473e
cmp ecx, 2
jne 0x414727
mov edi, str.Microsoft_Windows_Servernbsp_2003_family_
jmp 0x414748
cmp ecx, 1
jne 0x414733
mov edi, str.Microsoft_Windows_XP
jmp 0x414748
test ecx, ecx
jne 0x41476d
mov edi, str.Microsoft_Windows_2000
jmp 0x414748
cmp eax, 4
ja 0x41476d
mov edi, str.Microsoft_Windows_NT
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
test ebp, ebp
mov ebp, dword [sym.imp.ADVAPI32.dll_RegOpenKeyExA]
je 0x414874
mov al, byte [esp + 0xb2]
cmp al, 1
jne 0x4147dc
cmp dword [esp + 0x1c], 4
jne 0x4147bc
mov edi, str.Workstation_4.0
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
jmp 0x4149ed
mov eax, dword [esp + 0xb0]
test ah, 2
je 0x4147d2
mov edi, str.Home_Edition
jmp 0x4149bd
mov edi, str.Professional
jmp 0x4149bd
cmp al, 3
jne 0x4149e2
cmp dword [esp + 0x1c], 5
jne 0x414856
mov eax, dword [esp + 0x20]
cmp eax, 2
jne 0x414831
mov eax, dword [esp + 0xb0]
test al, 0x80
je 0x414809
mov edi, str.Datacenter_Edition
jmp 0x414aa6
test al, 2
je 0x414817
mov edi, str.Enterprise_Edition
jmp 0x414aa6
cmp ax, 0x400
jne 0x414827
mov edi, str.Web_Edition
jmp 0x414aa6
mov edi, str.Standard_Edition
jmp 0x414aa6
test eax, eax
jne 0x414856
mov al, byte [esp + 0xb0]
test al, 0x80
jne 0x414aa1
test al, 2
jne 0x414aa1
mov edi, str.Server
jmp 0x414aa6
test byte [esp + 0xb0], 2
je 0x41486a
mov edi, str.Server_4.0__Enterprise_Edition
jmp 0x4149bd
mov edi, str.Server_4.0
jmp 0x4149bd
lea eax, [esp + 0x10]
mov esi, 0x80
push eax
push 1
push 0
push str.SYSTEMCurrentControlSetControlProductOptions
push reloc.OLEAUT32.dll_SysReAllocString
mov dword [esp + 0x28], esi
call ebp
test eax, eax
je 0x4148a3
pop edi
pop esi
pop ebp
xor eax, eax
pop ebx
add esp, 0x324
ret
mov eax, dword [esp + 0x10]
lea ecx, [esp + 0x14]
lea edx, [esp + 0xb4]
push ecx
push edx
push 0
push 0
push str.ProductType
push eax
call dword [sym.imp.ADVAPI32.dll_RegQueryValueExA]
test eax, eax
jne 0x414896
cmp dword [esp + 0x14], esi
ja 0x414896
mov ecx, dword [esp + 0x10]
push ecx
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
lea edx, [esp + 0xb4]
push edx
push str.WINNT
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
jne 0x414918
mov edi, str.Workstation
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
lea eax, [esp + 0xb4]
push eax
push str.LANMANNT
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
jne 0x414957
mov edi, str.Server
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
lea eax, [esp + 0xb4]
push eax
push str.SERVERNT
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
jne 0x414996
mov edi, str.Advanced_Server
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov eax, dword [esp + 0x20]
mov ecx, dword [esp + 0x1c]
push eax
push ecx
lea edx, [esp + 0x13c]
push str._d._d
push edx
call dword [sym.imp.MSVCRT.dll_sprintf]
add esp, 0x10
lea edi, [esp + 0x134]
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
cmp dword [esp + 0x1c], 4
jne 0x414acb
lea eax, [esp + 0x2c]
push str.Service_Pack_6
push eax
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
jne 0x414acb
lea ecx, [esp + 0x10]
push ecx
push 1
push eax
push str.SOFTWAREMicrosoftWindows_NTCurrentVersionHotfixQ246009
push reloc.OLEAUT32.dll_SysReAllocString
call ebp
test eax, eax
jne 0x414a40
mov edx, dword [esp + 0x24]
lea eax, [esp + 0x134]
and edx, 0xffff
push edx
push str.Service_Pack_6a__Build__d_
push eax
call dword [sym.imp.MSVCRT.dll_sprintf]
add esp, 0xc
jmp 0x414a65
mov eax, dword [esp + 0x24]
lea ecx, [esp + 0x2c]
and eax, 0xffff
lea edx, [esp + 0x134]
push eax
push ecx
push str._s__Build__d_
push edx
call dword [sym.imp.MSVCRT.dll_sprintf]
add esp, 0x10
lea edi, [esp + 0x134]
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov eax, dword [esp + 0x10]
mov ecx, edx
and ecx, 3
push eax
rep movsb byte es:[edi], byte [esi]
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
jmp 0x414bbf
mov edi, str.Datacenter_Server
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov ecx, dword [esp + 0x24]
lea edx, [esp + 0x2c]
and ecx, 0xffff
lea eax, [esp + 0x134]
push ecx
push edx
push str._s__Build__d_
push eax
call dword [sym.imp.MSVCRT.dll_sprintf]
add esp, 0x10
lea edi, [esp + 0x134]
jmp 0x414b9a
cmp dword [esp + 0x1c], 4
jne 0x414bbf
mov eax, dword [esp + 0x20]
test eax, eax
jne 0x414b4b
mov edi, str.Microsoft_Windows_95
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov al, byte [esp + 0x2d]
mov ecx, edx
and ecx, 3
cmp al, 0x43
rep movsb byte es:[edi], byte [esi]
je 0x414b44
cmp al, 0x42
jne 0x414bbf
mov edi, str.OSR2
jmp 0x414b9a
cmp eax, 0xa
jne 0x414b89
mov edi, str.Microsoft_Windows_98
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov al, byte [esp + 0x2d]
mov ecx, edx
and ecx, 3
cmp al, 0x41
rep movsb byte es:[edi], byte [esi]
jne 0x414bbf
mov edi, 0x4353fc
jmp 0x414b9a
cmp eax, 0x5a
jne 0x414bbf
mov edi, str.Microsoft_Windows_Millennium_Edition
jmp 0x414b9a
mov edi, str.Microsoft_Win32s
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, ebx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, edx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov edi, ebx
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
dec ecx
pop edi
mov eax, ecx
pop esi
pop ebp
inc eax
pop ebx
add esp, 0x324
ret