Function at 0x4036da
Capabilities:
Accept command line arguments
Check os version
Copy file
Delete file
Get common file path
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 0x40375c
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 0x403758
mov eax, dword [esp + 0x5a]
add eax, 0xffffffd0
mov word [esp + 0x140], ax
jmp 0x403763
xor eax, eax
jmp 0x40374e
mov dl, byte [esp + 0x146]
cmp dword [esp + 0x30], 0xa
jae 0x403775
movzx eax, word [esp + 0x38]
mov dword [esp + 0x38], eax
jmp 0x403779
mov eax, dword [esp + 0x38]
mov dword [0x7a8638], 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 [0x7a863c], ecx
sar ecx, 0x10
cmp cx, ax
je 0x4037ce
push ebx
call fcn.004068c4
test eax, eax
je 0x4037ce
push 0xc00
call eax
mov esi, str.UXTHEME
push esi
call fcn.0040617c
push esi
call dword [sym.imp.KERNEL32.dll_lstrlenA]
inc esi
add esi, eax
cmp byte [esi], bl
jne 0x4037d3
push 0xb
call fcn.004068c4
push 9
call fcn.004068c4
push 7
mov dword [0x7a7530], eax
call fcn.004068c4
test eax, eax
je 0x403814
push 0x1e
call eax
test eax, eax
je 0x403814
or byte [0x7a863c], 0x80
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push ebx
push 0x2b4
mov dword [0x7a85a0], eax
lea eax, [esp + 0x150]
push eax
push ebx
push 0x4085b0
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x7a7540
call fcn.00406af8
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
push eax
push 0x7b3000
call fcn.00406af8
movzx ecx, word [0x7b3000]
mov edx, 0x7b3002
push 0x22
pop esi
push 0x20
pop ebx
cmp cx, si
mov dword [0x7a7534], 0x400000
mov eax, esi
mov dword [esp + 0x18], esi
cmovne eax, ebx
movzx eax, ax
push eax
mov eax, 0x7b3000
cmove eax, edx
push eax
call fcn.004065d4
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov ecx, eax
mov dword [esp + 0x14], ecx
movzx eax, word [ecx]
test ax, ax
je 0x403988
mov esi, eax
movzx eax, si
cmp si, bx
jne 0x4038c8
add ecx, 2
movzx eax, word [ecx]
cmp ax, bx
je 0x4038bd
movzx esi, ax
movzx edx, ax
cmp ax, word [esp + 0x18]
jne 0x4038de
movzx edx, word [ecx + 2]
push 0x22
pop eax
mov ebx, eax
cmp si, word [esp + 0x18]
lea eax, [ecx + 2]
cmovne eax, ecx
cmp dx, 0x2f
jne 0x403948
push 0x53
add eax, 2
pop ecx
push 0x20
pop edx
cmp word [eax], cx
jne 0x403915
movzx ecx, word [eax + 2]
cmp cx, dx
je 0x40390b
test cx, cx
jne 0x403915
mov dword [0x7a8620], 1
cmp dword [eax], 0x43004e
jne 0x403937
cmp dword [eax + 4], 0x430052
jne 0x403937
movzx ecx, word [eax + 8]
cmp cx, dx
je 0x403934
test cx, cx
jne 0x403937
or ebp, 4
cmp dword [eax - 4], 0x2f0020
jne 0x403948
cmp dword [eax], 0x3d0044
je 0x403974
push ebx
push eax
call fcn.004065d4
mov ecx, eax
push 0x22
pop ebx
movzx eax, word [ecx]
mov edx, eax
cmp ax, bx
jne 0x403964
add ecx, 2
movzx edx, word [ecx]
movzx esi, dx
test dx, dx
je 0x403988
push 0x20
pop ebx
jmp 0x4038b5
xor ecx, ecx
mov word [eax - 4], cx
add eax, 4
push eax
push 0x7b3800
call fcn.00406af8
mov esi, dword [sym.imp.KERNEL32.dll_GetTempPathW]
mov ebx, 0x7b5800
push ebx
push 0x400
call esi
call fcn.00403c83
test eax, eax
jne 0x4039fa
push 0x3fb
push ebx
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push ebx
call sub.KERNEL32.dll_lstrcatW
call fcn.00403c83
test eax, eax
jne 0x4039fa
push ebx
push 0x3fc
call esi
push 0x4085d8
push ebx
call sub.KERNEL32.dll_lstrcatW
mov esi, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push ebx
push str.TEMP
call esi
push ebx
push 0x4085ec
call esi
call fcn.00403c83
test eax, eax
je 0x403bc2
mov ebx, dword [sym.imp.KERNEL32.dll_DeleteFileW]
push 0x7b5000
call ebx
push ebp
call fcn.004033cb
mov edi, eax
xor ebp, ebp
test edi, edi
jne 0x403bc4
cmp dword [0x7a8544], ebp
je 0x403a84
push ebp
push 0x7b3000
call fcn.004065d4
mov esi, eax
mov eax, 0x7b3000
jmp 0x403a49
cmp dword [esi], 0x5f0020
jne 0x403a46
cmp dword [esi + 4], 0x3d003f
je 0x403a4d
sub esi, 2
cmp esi, eax
jae 0x403a35
mov edi, str.Error_launching_installer
cmp esi, eax
jb 0x403a97
xor eax, eax
mov word [esi], ax
add esi, 8
push esi
call fcn.00406616
test eax, eax
je 0x403bbe
push esi
push 0x7b3800
call fcn.00406af8
push esi
push 0x7b4000
call fcn.00406af8
mov edi, ebp
or dword [0x7a862c], 0xffffffff
call fcn.00405a1c
mov ebx, eax
jmp 0x403bc8
call fcn.004064da
push str.nsu
push 0x7b5800
mov esi, eax
call sub.KERNEL32.dll_lstrcatW
test esi, esi
je 0x403ac0
push 0x408600
push 0x7b5800
call sub.KERNEL32.dll_lstrcatW
push 0x408604
push 0x7b5800
call sub.KERNEL32.dll_lstrcatW
push 0x7b4800
push 0x7b5800
call dword [sym.imp.KERNEL32.dll_lstrcmpiW]
test eax, eax
je 0x403bbe
push 0x7b5800
test esi, esi
je 0x403af7
call fcn.00405e1c
jmp 0x403afc
call fcn.00405dfc
push 0x7b5800
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
cmp word [0x7b3800], bp
jne 0x403b1f
push 0x7b4800
push 0x7b3800
call fcn.00406af8
push dword [esp + 0x14]
push section..ndata
call fcn.00406af8
push 0x1a
mov dword [0x7a9800], 0x41
pop esi
mov eax, dword [0x7a8550]
push dword [eax + 0x120]
push 0x79f200
call fcn.00405e98
push 0x79f200
call ebx
test edi, edi
je 0x403ba7
push 1
push 0x79f200
push 0x7b6800
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403ba7
push ebp
push 0x79f200
call fcn.0040621b
mov eax, dword [0x7a8550]
push dword [eax + 0x124]
push 0x79f200
call fcn.00405e98
push 0x79f200
call fcn.004066b4
test eax, eax
je 0x403ba7
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov edi, ebp
inc word [0x7a9800]
sub esi, 1
jne 0x403b3a
push ebp
push 0x7b5800
call fcn.0040621b
mov ebx, ebp
jmp 0x403bc8
xor ebp, ebp
mov ebx, dword [esp + 0x10]
call fcn.004036b0
call dword [sym.imp.ole32.dll_OleUninitialize]
test edi, edi
je 0x403bea
push 0x200010
push edi
call fcn.00406a86
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
cmp dword [0x7a8614], 0
je 0x403c6f
lea eax, [esp + 0x14]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call dword [sym.imp.ADVAPI32.dll_OpenProcessToken]
test eax, eax
je 0x403c3f
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 + 0x28]
mov dword [esp + 0x40], 2
call dword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
push 4
call fcn.004068c4
mov esi, 0x80040002
test eax, eax
je 0x403c5b
push esi
push 0x25
push ebp
push ebp
push ebp
call eax
test eax, eax
je 0x403c68
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403c6f
push 9
call fcn.00401533
cmp dword [0x7a862c], 0xffffffff
cmovne ebx, dword [0x7a862c]
push ebx
jmp 0x403be4