Function at 0x424540
Capabilities:
Check os version
Get common file path
Get file version info
Query or enumerate registry value

Disassembly:
mov eax, dword fs:[0]
push 0xffffffffffffffff
push 0x45a0d6
push eax
mov eax, dword [0x4712ec]
mov dword fs:[0], esp
sub esp, 0x2cc
push ebp
xor ebp, ebp
cmp eax, ebp
jne 0x424af8
push esi
mov esi, dword [sym.imp.KERNEL32.dll_GetVersionExA]
push edi
mov ecx, 0x24
xor eax, eax
lea edi, [esp + 0x30]
mov dword [esp + 0x2c], 0x94
mov dword [0x4712ec], 1
rep stosd dword es:[edi], eax
lea eax, [esp + 0x2c]
push eax
call esi
test eax, eax
je 0x4246ae
lea ecx, [esp + 0x34]
lea edx, [esp + 0x30]
push ecx
push edx
call fcn.00424b40
add esp, 8
push str.Ntdll.dll
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp eax, ebp
je 0x4245d8
push str.RtlGetVersion
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov edx, eax
mov dword [0x4718a0], edx
jmp 0x4245de
mov edx, dword [0x4718a0]
cmp edx, ebp
je 0x424616
mov ecx, 0x44
xor eax, eax
lea edi, [esp + 0x1c8]
rep stosd dword es:[edi], eax
lea eax, [esp + 0x1c4]
mov dword [esp + 0x1c4], 0x114
push eax
call edx
test eax, eax
jne 0x424616
mov ecx, dword [esp + 0x1d0]
mov dword [esp + 0x38], ecx
mov eax, dword [esp + 0x38]
mov ecx, dword [esp + 0x30]
mov edx, dword [esp + 0x34]
mov dword [0x4712f8], eax
mov eax, dword [esp + 0x3c]
mov dword [0x4712f0], ecx
cmp eax, 2
mov dword [0x4712f4], edx
mov dword [0x4712fc], eax
jne 0x4246ae
cmp ecx, 4
jb 0x4246ae
mov ecx, 0x26
xor eax, eax
lea edi, [esp + 0xc4]
mov dword [esp + 0xc0], 0x9c
rep stosd dword es:[edi], eax
lea ecx, [esp + 0xc0]
push ecx
call esi
test eax, eax
je 0x4246ae
mov ax, word [esp + 0x156]
mov dx, word [esp + 0x154]
mov cx, word [esp + 0x158]
mov word [0x471382], ax
mov ax, word [esp + 0x15a]
mov word [0x471380], dx
mov byte [0x471386], al
mov word [0x471384], cx
mov byte [0x471387], ah
push ebx
push 0x104
push 0x471388
call dword [sym.imp.KERNEL32.dll_GetSystemDirectoryA]
mov edi, 0x471388
or ecx, 0xffffffff
xor eax, eax
mov ebx, dword [sym.imp.ADVAPI32.dll_RegQueryValueExA]
repne scasb al, byte es:[edi]
not ecx
dec ecx
je 0x42490c
mov edi, 0x471388
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
push 0x5c
mov edx, ecx
mov esi, edi
mov edi, 0x47148c
push 0x47148c
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
call fcn.0040ee59
add esp, 8
cmp eax, ebp
je 0x424713
mov byte [eax], 0
mov edi, 0x47148c
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
dec ecx
je 0x42490c
mov edi, 0x47148c
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
push 0x5c
mov eax, ecx
mov esi, edi
mov edi, 0x471798
push 0x471798
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
and ecx, 3
rep movsb byte es:[edi], byte [esi]
call fcn.0040ee59
add esp, 8
cmp eax, ebp
je 0x424761
mov byte [eax], 0
lea ecx, [esp + 0x14]
mov dword [esp + 0x14], ebp
push ecx
push 0x20019
push ebp
push str.SoftwareMicrosoftWindowsCurrentVersion
push reloc.OLEAUT32.dll_SysReAllocString
call dword [sym.imp.ADVAPI32.dll_RegOpenKeyExA]
test eax, eax
jne 0x42484c
mov eax, dword [esp + 0x14]
cmp eax, ebp
je 0x42484c
lea edx, [esp + 0x18]
lea ecx, [esp + 0x10]
push edx
push ebp
push ecx
push ebp
push str.ProgramFilesDir
push eax
mov dword [esp + 0x28], ebp
mov dword [esp + 0x30], ebp
call ebx
test eax, eax
mov esi, 0x103
jne 0x4247ef
mov eax, dword [esp + 0x10]
cmp eax, 1
je 0x4247d1
cmp eax, 2
je 0x4247d1
cmp eax, 6
je 0x4247d1
cmp eax, 7
jne 0x4247ef
cmp dword [esp + 0x18], esi
ja 0x4247ef
mov eax, dword [esp + 0x14]
lea edx, [esp + 0x18]
push edx
push 0x471590
push ebp
push ebp
push str.ProgramFilesDir
push eax
call ebx
mov eax, dword [esp + 0x14]
lea ecx, [esp + 0x18]
push ecx
lea edx, [esp + 0x14]
push ebp
push edx
push ebp
push str.CommonFilesDir
push eax
call ebx
test eax, eax
jne 0x424841
mov eax, dword [esp + 0x10]
cmp eax, 1
je 0x424823
cmp eax, 2
je 0x424823
cmp eax, 6
je 0x424823
cmp eax, 7
jne 0x424841
cmp dword [esp + 0x18], esi
ja 0x424841
mov edx, dword [esp + 0x14]
lea ecx, [esp + 0x18]
push ecx
push 0x471694
push ebp
push ebp
push str.CommonFilesDir
push edx
call ebx
mov eax, dword [esp + 0x14]
push eax
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
mov edi, 0x471590
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
dec ecx
jne 0x4248ab
mov edi, 0x471798
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov edx, ecx
mov esi, edi
mov edi, 0x471590
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, str.Program_Files
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, 0x471590
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, 0x471694
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
dec ecx
jne 0x42490c
mov edi, 0x471590
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov eax, ecx
mov esi, edi
mov edi, 0x471694
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
xor eax, eax
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov edi, str.Common_Files
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov edx, ecx
mov edi, 0x471694
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 dword [esp + 0x14], ebp
mov eax, dword [0x46a2f4]
xor edi, edi
mov dword [esp + 0x2e4], edi
mov dword [esp + 0x20], eax
lea ecx, [esp + 0x10]
mov byte [esp + 0x2e4], 1
push ecx
push 0x20019
push edi
push str.SYSTEMCurrentControlSetControlNlsLanguage
push reloc.OLEAUT32.dll_SysReAllocString
mov dword [esp + 0x24], edi
call dword [sym.imp.ADVAPI32.dll_RegOpenKeyExA]
cmp eax, edi
jne 0x4249b2
xor edx, edx
mov esi, dword [esp + 0x10]
mov dword [esp + 0x25], edx
lea eax, [esp + 0x1c]
mov dword [esp + 0x29], edx
lea ecx, [esp + 0x24]
mov word [esp + 0x2d], dx
push eax
lea edx, [esp + 0x14]
push ecx
push edx
push edi
mov ebp, esi
push str.InstallLanguage
push esi
mov dword [esp + 0x2c], ebp
mov dword [esp + 0x34], 0xa
mov byte [esp + 0x3c], 0
mov dword [esp + 0x28], edi
call ebx
cmp eax, edi
jne 0x4249a1
lea eax, [esp + 0x24]
lea ecx, [esp + 0x20]
push eax
call fcn.00440933
cmp esi, edi
je 0x4249b2
push esi
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
xor ebp, ebp
mov dword [esp + 0x14], ebp
mov eax, dword [esp + 0x20]
pop ebx
cmp dword [eax - 8], edi
jle 0x4249d4
push 0x47189c
push 0x46ec0c
push eax
call fcn.00424f7b
add esp, 0xc
jmp 0x424ada
mov ecx, 0x40
xor eax, eax
lea edi, [esp + 0xc1]
mov byte [esp + 0xc0], 0
rep stosd dword es:[edi], eax
stosw word es:[edi], ax
push 0x471388
lea ecx, [esp + 0xc4]
push str._suser.exe
push ecx
stosb byte es:[edi], al
call fcn.0040efbb
add esp, 0xc
lea edx, [esp + 0x14]
lea eax, [esp + 0xc0]
mov dword [esp + 0x14], 0
push edx
push eax
call sub.VERSION.dll_GetFileVersionInfoSizeA
push eax
mov dword [esp + 0x10], eax
call fcn.004404e5
mov esi, eax
add esp, 4
test esi, esi
je 0x424ada
mov ecx, dword [esp + 0xc]
xor eax, eax
mov edx, ecx
mov edi, esi
shr ecx, 2
rep stosd dword es:[edi], eax
mov ecx, edx
push esi
and ecx, 3
lea edx, [esp + 0xc4]
rep stosb byte es:[edi], al
mov eax, dword [esp + 0x10]
mov ecx, dword [esp + 0x18]
push eax
push ecx
push edx
call sub.VERSION.dll_GetFileVersionInfoA
test eax, eax
je 0x424ad1
lea eax, [esp + 0xc]
lea ecx, [esp + 0x18]
push eax
push ecx
push 0x46ebe4
push esi
mov dword [esp + 0x28], 0
call sub.VERSION.dll_VerQueryValueA
test eax, eax
je 0x424ad1
mov edx, dword [esp + 0x18]
xor ecx, ecx
mov ax, word [edx]
mov word [0x47189c], ax
mov edx, dword [0x47189c]
mov eax, 0x46eb4a
mov di, word [eax + 2]
and edi, edx
cmp di, word [eax]
je 0x424abf
add eax, 6
inc ecx
cmp eax, 0x46ebe6
jb 0x424aa7
jmp 0x424ad1
lea ecx, [ecx + ecx*2]
mov dx, word [ecx*2 + 0x46eb48]
mov word [0x47189c], dx
push esi
call fcn.0044050e
add esp, 4
lea ecx, [esp + 0x1c]
mov byte [esp + 0x2e0], 0
call fcn.004407aa
pop edi
pop esi
test ebp, ebp
je 0x424af8
push ebp
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
mov ecx, dword [esp + 0x2d0]
mov eax, 1
pop ebp
mov dword fs:[0], ecx
add esp, 0x2d8
ret