Function at 0x4036fb
Capabilities:
Accept command line arguments
Check os version
Copy file
Delete file
Get common file path
Get file attributes
Get file system object information
Set current directory
Set environment variable
Shutdown system
Terminate process

Disassembly:
sub esp, 0x3ec
push ebx
push ebp
push esi
push edi
xor ebx, ebx
mov edi, str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
push 0x8001
mov dword [esp + 0x14], ebx
mov ebp, ebx
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
mov esi, dword [sym.imp.KERNEL32.dll_GetVersionExW]
lea eax, [esp + 0x2c]
xorps xmm0, xmm0
mov dword [esp + 0x40], ebx
push eax
movlpd qword [esp + 0x144], xmm0
mov dword [esp + 0x30], 0x11c
call esi
test eax, eax
jne 0x40377d
lea eax, [esp + 0x2c]
mov dword [esp + 0x2c], 0x114
push eax
call esi
push 0x53
pop eax
mov dl, 4
mov byte [esp + 0x146], dl
cmp word [esp + 0x40], ax
jne 0x403779
mov eax, dword [esp + 0x5a]
add eax, 0xffffffd0
mov word [esp + 0x140], ax
jmp 0x403784
xor eax, eax
jmp 0x40376f
mov dl, byte [esp + 0x146]
cmp dword [esp + 0x30], 0xa
jae 0x403796
movzx eax, word [esp + 0x38]
mov dword [esp + 0x38], eax
jmp 0x40379a
mov eax, dword [esp + 0x38]
mov dword [0x429618], eax
movzx eax, byte [esp + 0x30]
shl ax, 8
movzx ecx, ax
movzx eax, byte [esp + 0x34]
or ecx, eax
movzx eax, byte [esp + 0x140]
shl ax, 8
shl ecx, 0x10
movzx eax, ax
or ecx, eax
movzx eax, dl
or ecx, eax
mov eax, 0x600
mov dword [0x42961c], ecx
sar ecx, 0x10
cmp cx, ax
je 0x4037ef
push ebx
call fcn.00406930
test eax, eax
je 0x4037ef
push 0xc00
call eax
mov esi, str.UXTHEME
push esi
call fcn.004061e8
push esi
call dword [sym.imp.KERNEL32.dll_lstrlenA]
inc esi
add esi, eax
cmp byte [esi], bl
jne 0x4037f4
push 0xc
call fcn.00406930
push 0xa
call fcn.00406930
push 8
mov dword [0x428510], eax
call fcn.00406930
test eax, eax
je 0x403835
push 0x1e
call eax
test eax, eax
je 0x403835
or byte [0x42961c], 0x80
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push ebx
push 0x2b4
mov dword [0x429580], eax
lea eax, [esp + 0x150]
push eax
push ebx
push 0x4085a8
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x428520
call fcn.00406b64
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
push eax
mov esi, 0x434000
push esi
call fcn.00406b64
movzx ecx, word [0x434000]
push 0x22
pop ebx
push 0x20
pop edx
cmp cx, bx
mov dword [0x428514], 0x400000
mov eax, ebx
mov dword [esp + 0x14], ebx
cmovne eax, edx
mov edx, 0x434002
movzx eax, ax
push eax
mov eax, esi
cmove eax, edx
push eax
call fcn.00406640
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov ecx, eax
mov ebx, ecx
mov dword [esp + 0x18], ebx
movzx eax, word [ecx]
test ax, ax
je 0x4039b0
mov esi, eax
push 0x20
pop edx
movzx eax, si
cmp si, dx
jne 0x4038ec
add ecx, 2
movzx eax, word [ecx]
cmp ax, dx
je 0x4038e1
mov ebx, edx
movzx esi, ax
movzx edx, ax
cmp ax, word [esp + 0x14]
jne 0x403904
movzx edx, word [ecx + 2]
push 0x22
pop eax
mov ebx, eax
cmp si, word [esp + 0x14]
lea eax, [ecx + 2]
cmovne eax, ecx
cmp dx, 0x2f
jne 0x40396e
push 0x53
add eax, 2
pop ecx
push 0x20
pop edx
cmp word [eax], cx
jne 0x40393b
movzx ecx, word [eax + 2]
cmp cx, dx
je 0x403931
test cx, cx
jne 0x40393b
mov dword [0x429600], 1
cmp dword [eax], 0x43004e
jne 0x40395d
cmp dword [eax + 4], 0x430052
jne 0x40395d
movzx ecx, word [eax + 8]
cmp cx, dx
je 0x40395a
test cx, cx
jne 0x40395d
or ebp, 4
cmp dword [eax - 4], 0x2f0020
jne 0x40396e
cmp dword [eax], 0x3d0044
je 0x403998
push ebx
push eax
call fcn.00406640
mov ecx, eax
push 0x22
pop ebx
movzx eax, word [ecx]
mov edx, eax
cmp ax, bx
jne 0x40398a
add ecx, 2
movzx edx, word [ecx]
movzx esi, dx
test dx, dx
jne 0x4038d6
jmp 0x4039ac
xor ecx, ecx
mov word [eax - 4], cx
add eax, 4
push eax
push 0x434800
call fcn.00406b64
mov ebx, dword [esp + 0x18]
mov esi, dword [sym.imp.KERNEL32.dll_GetTempPathW]
push 0x436800
push 0x400
call esi
call fcn.00403cfe
test eax, eax
jne 0x403a36
push 0x3fb
push 0x436800
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push 0x436800
call sub.KERNEL32.dll_lstrcatW
call fcn.00403cfe
test eax, eax
jne 0x403a36
push 0x436800
push 0x3fc
call esi
push 0x4085d0
mov esi, 0x436800
push esi
call sub.KERNEL32.dll_lstrcatW
push esi
mov esi, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push str.TEMP
call esi
push 0x436800
push 0x4085e4
call esi
call fcn.00403cfe
test eax, eax
je 0x403c17
push 0x436000
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push ebp
call fcn.004033ec
mov edi, eax
test edi, edi
jne 0x403c17
cmp dword [0x429524], eax
je 0x403abe
xor ebp, ebp
push ebp
push 0x434000
call fcn.00406640
mov esi, eax
mov eax, 0x434000
jmp 0x403a83
cmp dword [esi], 0x5f0020
jne 0x403a80
cmp dword [esi + 4], 0x3d003f
je 0x403a87
sub esi, 2
cmp esi, eax
jae 0x403a6f
mov edi, str.Error_launching_installer
cmp esi, eax
jb 0x403ad1
xor eax, eax
mov word [esi], ax
add esi, 8
push esi
call fcn.00406682
test eax, eax
je 0x403c61
push esi
push 0x434800
call fcn.00406b64
push esi
push 0x435000
call fcn.00406b64
mov edi, ebp
or dword [0x42960c], 0xffffffff
call fcn.00405a97
mov ebx, eax
jmp 0x403c1b
call fcn.00406546
push 0x436800
mov dword [esp + 0x1c], eax
call sub.KERNEL32.dll_lstrlenW
push ebx
push section..ndata
mov esi, eax
call fcn.00406b64
cmp word [0x434800], bp
jne 0x403b09
push 0x435800
push 0x434800
call fcn.00406b64
xor ebx, ebx
lea eax, [esi*2 + 0x436800]
inc ebx
mov dword [esp + 0x14], eax
mov esi, ebp
movzx ebp, bx
push ebp
push str.nsu_X.tmp
push eax
call dword [sym.imp.USER32.dll_wsprintfW]
mov eax, dword [0x429530]
add esp, 0xc
push dword [eax + 0x120]
push 0x42c800
call fcn.00405ef2
cmp dword [esp + 0x18], 0
push 0x436800
je 0x403b54
call fcn.00405e97
jmp 0x403b59
call fcn.00405e77
test eax, eax
je 0x403ba6
push 0x42c800
call dword [sym.imp.KERNEL32.dll_GetFileAttributesW]
test eax, 0x400
jne 0x403c3f
push 0x42c800
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
test eax, eax
je 0x403c3f
push 1
push 0x436800
call fcn.00406763
mov eax, esi
inc esi
test eax, eax
jne 0x403c3f
mov eax, dword [esp + 0x14]
jmp 0x403b1c
push 0x436800
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
push 0
push 0x436800
call fcn.00406287
push 1
push 0x42c800
push 0x437800
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403c17
push 0
push 0x42c800
call fcn.00406287
mov eax, dword [0x429530]
push dword [eax + 0x124]
push 0x42d000
call fcn.00405ef2
push 0x42d000
call fcn.00406720
test eax, eax
jne 0x403c52
mov eax, esi
inc esi
test eax, eax
jne 0x403c17
push 0x42c800
call fcn.00406619
test eax, eax
je 0x403b9d
mov ebx, dword [esp + 0x10]
xor ebp, ebp
call fcn.004036d1
call dword [sym.imp.ole32.dll_OleUninitialize]
test edi, edi
je 0x403c65
push 0x200010
push edi
call fcn.00406af2
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
mov eax, dword [esp + 0x14]
inc ebx
push 0
pop ebp
test bx, bx
jne 0x403b17
jmp 0x403c17
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
xor ebp, ebp
mov edi, ebp
mov ebx, edi
jmp 0x403c1d
mov ebx, ebp
jmp 0x403c1b
cmp dword [0x4295f4], 0
je 0x403cea
lea eax, [esp + 0x18]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call dword [sym.imp.ADVAPI32.dll_OpenProcessToken]
test eax, eax
je 0x403cba
lea eax, [esp + 0x20]
push eax
push str.SeShutdownPrivilege
push ebp
call dword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueW]
push ebp
push ebp
push ebp
lea eax, [esp + 0x28]
mov dword [esp + 0x28], 1
push eax
push ebp
push dword [esp + 0x2c]
mov dword [esp + 0x40], 2
call dword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
push 4
call fcn.00406930
mov esi, 0x80040002
test eax, eax
je 0x403cd6
push esi
push 0x25
push ebp
push ebp
push ebp
call eax
test eax, eax
je 0x403ce3
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403cea
push 9
call fcn.00401533
cmp dword [0x42960c], 0xffffffff
cmovne ebx, dword [0x42960c]
push ebx
jmp 0x403c39