Function at 0x4fa890
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 0x51b0b6
push eax
mov eax, dword [0x5662a0]
mov dword fs:[0], esp
sub esp, 0x348
push ebx
xor ebx, ebx
cmp eax, ebx
push esi
jne 0x4fad5b
mov esi, dword [sym.imp.KERNEL32.dll_GetVersionExW]
push ebp
push edi
mov ecx, 0x44
xor eax, eax
lea edi, [esp + 0x40]
mov dword [esp + 0x3c], 0x114
mov dword [0x5662a0], 1
rep stosd dword es:[edi], eax
lea eax, [esp + 0x3c]
push eax
call esi
test eax, eax
je 0x4fa99d
lea ecx, [esp + 0x44]
lea edx, [esp + 0x40]
push ecx
push edx
call fcn.004fada0
mov eax, dword [esp + 0x4c]
mov ecx, dword [esp + 0x48]
mov edx, dword [esp + 0x50]
mov dword [0x5662a8], eax
mov eax, dword [esp + 0x54]
add esp, 8
cmp eax, 2
mov dword [0x5662a4], ecx
mov dword [0x5662ac], edx
mov dword [0x5662b0], eax
jne 0x4fa99d
cmp ecx, 4
jb 0x4fa99d
mov ecx, 0x46
xor eax, eax
lea edi, [esp + 0x154]
mov dword [esp + 0x150], 0x11c
rep stosd dword es:[edi], eax
lea eax, [esp + 0x150]
push eax
call esi
test eax, eax
je 0x4fa99d
mov cx, word [esp + 0x264]
mov dx, word [esp + 0x266]
mov ax, word [esp + 0x26a]
mov word [0x5663b4], cx
mov cx, word [esp + 0x268]
mov word [0x5663b6], dx
mov byte [0x5663ba], al
mov word [0x5663b8], cx
mov byte [0x5663bb], ah
push 0x104
push 0x5663bc
call dword [sym.imp.KERNEL32.dll_GetSystemDirectoryW]
push 0x5663bc
call fcn.00421443
mov ebp, dword [sym.imp.ADVAPI32.dll_RegOpenKeyExW]
mov edi, dword [sym.imp.ADVAPI32.dll_RegQueryValueExW]
add esp, 4
test eax, eax
jbe 0x4fab78
push 0x5663bc
push 0x5665c4
call fcn.0042141e
push 0x5c
push 0x5665c4
call fcn.0042154a
add esp, 0x10
cmp eax, ebx
je 0x4fa9f3
mov word [eax], bx
push 0x5665c4
call fcn.00421443
add esp, 4
test eax, eax
jbe 0x4fab78
push 0x5665c4
push 0x566bdc
call fcn.0042141e
push 0x5c
push 0x566bdc
call fcn.0042154a
add esp, 0x10
cmp eax, ebx
je 0x4faa2d
mov word [eax], bx
lea edx, [esp + 0x14]
mov dword [esp + 0x14], ebx
push edx
push 0x20019
push ebx
push 0x548f60
push reloc.OLEAUT32.dll_SysReAllocString
call ebp
test eax, eax
jne 0x4fab14
mov eax, dword [esp + 0x14]
cmp eax, ebx
je 0x4fab14
lea ecx, [esp + 0x18]
lea edx, [esp + 0x10]
push ecx
push ebx
push edx
push ebx
push str.ProgramFilesDir
push eax
mov dword [esp + 0x28], ebx
mov dword [esp + 0x30], ebx
call edi
test eax, eax
mov esi, 0x102
jne 0x4faab7
mov eax, dword [esp + 0x10]
cmp eax, 1
je 0x4faa99
cmp eax, 2
je 0x4faa99
cmp eax, 6
je 0x4faa99
cmp eax, 7
jne 0x4faab7
cmp dword [esp + 0x18], esi
ja 0x4faab7
mov ecx, dword [esp + 0x14]
lea eax, [esp + 0x18]
push eax
push 0x5667cc
push ebx
push ebx
push str.ProgramFilesDir
push ecx
call edi
mov ecx, dword [esp + 0x14]
lea edx, [esp + 0x18]
push edx
lea eax, [esp + 0x14]
push ebx
push eax
push ebx
push 0x548f40
push ecx
call edi
test eax, eax
jne 0x4fab09
mov eax, dword [esp + 0x10]
cmp eax, 1
je 0x4faaeb
cmp eax, 2
je 0x4faaeb
cmp eax, 6
je 0x4faaeb
cmp eax, 7
jne 0x4fab09
cmp dword [esp + 0x18], esi
ja 0x4fab09
mov eax, dword [esp + 0x14]
lea edx, [esp + 0x18]
push edx
push 0x5669d4
push ebx
push ebx
push 0x548f40
push eax
call edi
mov ecx, dword [esp + 0x14]
push ecx
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
push 0x5667cc
call fcn.00421443
add esp, 4
test eax, eax
jne 0x4fab46
push 0x566bdc
push 0x5667cc
call fcn.0042141e
push str.Program_Files
push 0x5667cc
call fcn.004213f4
add esp, 0x10
push 0x5669d4
call fcn.00421443
add esp, 4
test eax, eax
jne 0x4fab78
push 0x5667cc
push 0x5669d4
call fcn.0042141e
push str.Common_Files
push 0x5669d4
call fcn.004213f4
add esp, 0x10
xor esi, esi
mov dword [esp + 0x14], esi
mov edx, dword [0x549454]
mov dword [esp + 0x360], ebx
mov dword [esp + 0x20], edx
lea eax, [esp + 0x10]
mov byte [esp + 0x360], 1
push eax
push 0x20019
push ebx
push str.SYSTEMCurrentControlSetControlNlsLanguage
push reloc.OLEAUT32.dll_SysReAllocString
mov dword [esp + 0x24], ebx
call ebp
cmp eax, ebx
jne 0x4fac20
xor ecx, ecx
mov esi, dword [esp + 0x10]
mov dword [esp + 0x26], ecx
lea edx, [esp + 0x1c]
mov dword [esp + 0x2a], ecx
lea eax, [esp + 0x24]
mov dword [esp + 0x2e], ecx
push edx
mov dword [esp + 0x36], ecx
push eax
mov dword [esp + 0x3e], ecx
lea ecx, [esp + 0x18]
push ecx
push ebx
push str.InstallLanguage
push esi
mov dword [esp + 0x2c], esi
mov dword [esp + 0x34], 0xa
mov word [esp + 0x3c], bx
mov dword [esp + 0x28], ebx
call edi
cmp eax, ebx
jne 0x4fac0f
lea edx, [esp + 0x24]
lea ecx, [esp + 0x20]
push edx
call fcn.004ff646
cmp esi, ebx
je 0x4fac20
push esi
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
xor esi, esi
mov dword [esp + 0x14], esi
mov eax, dword [esp + 0x20]
cmp dword [eax - 8], ebx
jle 0x4fac41
push 0x566de4
push 0x55c020
push eax
call fcn.00421d42
add esp, 0xc
jmp 0x4fad3e
mov ecx, 0x81
xor eax, eax
lea edi, [esp + 0x152]
mov word [esp + 0x150], bx
rep stosd dword es:[edi], eax
stosw word es:[edi], ax
push 0x5663bc
lea eax, [esp + 0x154]
push str._suser.exe
push eax
call fcn.00421460
add esp, 0xc
lea ecx, [esp + 0x18]
lea edx, [esp + 0x150]
mov dword [esp + 0x18], ebx
push ecx
push edx
call sub.VERSION.dll_GetFileVersionInfoSizeW
push eax
mov dword [esp + 0x14], eax
call fcn.004ff0e6
mov ebp, eax
add esp, 4
cmp ebp, ebx
je 0x4fad3e
mov ecx, dword [esp + 0x10]
xor eax, eax
mov edx, ecx
mov edi, ebp
shr ecx, 2
rep stosd dword es:[edi], eax
mov ecx, edx
push ebp
and ecx, 3
lea edx, [esp + 0x154]
rep stosb byte es:[edi], al
mov eax, dword [esp + 0x14]
mov ecx, dword [esp + 0x1c]
push eax
push ecx
push edx
call sub.VERSION.dll_GetFileVersionInfoW
test eax, eax
je 0x4fad35
lea eax, [esp + 0x10]
lea ecx, [esp + 0x1c]
push eax
push ecx
push 0x54f058
push ebp
mov dword [esp + 0x2c], ebx
call sub.VERSION.dll_VerQueryValueW
test eax, eax
je 0x4fad35
mov edx, dword [esp + 0x1c]
xor ecx, ecx
mov ax, word [edx]
mov word [0x566de4], ax
mov edx, dword [0x566de4]
mov eax, 0x55bf6e
mov di, word [eax + 2]
and edi, edx
cmp di, word [eax]
je 0x4fad23
add eax, 6
inc ecx
cmp eax, 0x55c00a
jb 0x4fad0b
jmp 0x4fad35
lea ecx, [ecx + ecx*2]
mov dx, word [ecx*2 + 0x55bf6c]
mov word [0x566de4], dx
push ebp
call fcn.004ff10f
add esp, 4
lea ecx, [esp + 0x20]
mov byte [esp + 0x360], bl
call fcn.004ff4af
pop edi
cmp esi, ebx
pop ebp
je 0x4fad5b
push esi
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
mov ecx, dword [esp + 0x350]
pop esi
mov eax, 1
pop ebx
mov dword fs:[0], ecx
add esp, 0x354
ret