Function at 0x40346c
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, 0x2d4
push ebx
push esi
push edi
push 0x20
pop edi
xor ebx, ebx
push 0x8001
mov dword [esp + 0x14], ebx
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x1c], ebx
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
call dword [sym.imp.KERNEL32.dll_GetVersion]
cmp ax, 6
je 0x4034b2
push ebx
call fcn.0040660e
cmp eax, ebx
je 0x4034b2
push 0xc00
call eax
mov esi, str.UXTHEME
push esi
call fcn.0040659e
push esi
call dword [sym.imp.KERNEL32.dll_lstrlenA]
lea esi, [esi + eax + 1]
cmp byte [esi], 0
jne 0x4034b7
push ebp
push 9
call fcn.0040660e
push 7
call fcn.0040660e
mov dword [0x434f24], eax
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
mov dword [0x434fd8], eax
push ebx
lea eax, [esp + 0x34]
push 0x2b4
push eax
push ebx
push 0x42b248
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x433f20
call fcn.00406234
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
mov ebp, 0x440000
push eax
push ebp
call fcn.00406234
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp word [0x440000], 0x22
mov dword [0x434f20], eax
mov eax, ebp
jne 0x40354b
push 0x22
mov eax, 0x440002
pop edi
push edi
push eax
call fcn.00405c15
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov ecx, eax
mov dword [esp + 0x18], ecx
mov ax, word [ecx]
cmp ax, bx
je 0x40367c
push 0x20
pop ebx
cmp ax, bx
jne 0x40357a
inc ecx
inc ecx
cmp word [ecx], bx
je 0x403573
cmp word [ecx], 0x22
jne 0x403585
inc ecx
push 0x22
inc ecx
pop ebx
cmp word [ecx], 0x2f
jne 0x403648
inc ecx
inc ecx
cmp word [ecx], 0x53
jne 0x4035b0
mov ax, word [ecx + 2]
cmp ax, 0x20
je 0x4035a6
test ax, ax
jne 0x4035b0
mov dword [0x434fc0], 1
movzx eax, word [0x40a37e]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov edi, eax
xor esi, esi
movzx eax, word [0x40a37c]
cdq
movzx edx, word [str.NCRC]
or edi, eax
movzx eax, word [0x40a37a]
shl eax, 0x10
or eax, edx
cdq
or esi, eax
mov eax, dword [ecx]
or edi, edx
cmp eax, esi
jne 0x403606
mov eax, dword [ecx + 4]
cmp eax, edi
jne 0x403606
mov ax, word [ecx + 8]
cmp ax, 0x20
je 0x403601
test ax, ax
jne 0x403606
or dword [esp + 0x1c], 4
movzx eax, word [0x40a372]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov edi, eax
xor esi, esi
movzx eax, word [0x40a370]
cdq
movzx edx, word [str.__D]
or edi, eax
movzx eax, word [0x40a36e]
shl eax, 0x10
or eax, edx
cdq
or esi, eax
mov eax, dword [ecx - 4]
or edi, edx
cmp eax, esi
jne 0x403648
mov eax, dword [ecx]
cmp eax, edi
je 0x403667
push ebx
push ecx
call fcn.00405c15
mov ecx, eax
cmp word [ecx], 0x22
jne 0x403659
inc ecx
inc ecx
mov ax, word [ecx]
test ax, ax
jne 0x40356b
jmp 0x40367a
and word [ecx - 4], 0
add ecx, 4
push ecx
push 0x440800
call fcn.00406234
xor ebx, ebx
mov edi, dword [sym.imp.KERNEL32.dll_GetTempPathW]
mov esi, 0x442800
push esi
push 0x400
call edi
call fcn.0040343b
test eax, eax
jne 0x4036ee
push 0x3fb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push esi
call sub.KERNEL32.dll_lstrcatW
call fcn.0040343b
test eax, eax
jne 0x4036ee
push esi
push 0x3fc
call edi
push 0x40a358
push esi
call sub.KERNEL32.dll_lstrcatW
mov edi, dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableW]
push esi
push str.TEMP
call edi
push esi
push 0x40a344
call edi
call fcn.0040343b
test eax, eax
je 0x4037b9
push 0x442000
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push dword [esp + 0x1c]
call fcn.00402ed5
cmp eax, ebx
mov dword [esp + 0x10], eax
jne 0x4037b9
cmp dword [0x434f3c], ebx
je 0x4037a9
push ebx
push ebp
call fcn.00405c15
mov edi, eax
cmp edi, ebp
jb 0x403773
movzx eax, word [0x40a33e]
cdq
shld edx, eax, 0x10
shl eax, 0x10
mov ebx, eax
movzx eax, word [0x40a33c]
movzx ecx, word [0x40a338]
cdq
or ebx, eax
movzx eax, word [0x40a33a]
shl eax, 0x10
or eax, ecx
xor ecx, ecx
cdq
or ecx, eax
mov eax, ebx
or eax, edx
mov edx, dword [edi]
cmp edx, ecx
jne 0x40376b
mov edx, dword [edi + 4]
cmp edx, eax
je 0x403771
dec edi
dec edi
cmp edi, ebp
jae 0x40375e
xor ebx, ebx
cmp edi, ebp
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x4037e5
mov word [edi], bx
add edi, 8
push edi
call fcn.00405cf0
test eax, eax
je 0x4037b9
push edi
push 0x440800
call fcn.00406234
push edi
push 0x441000
call fcn.00406234
mov dword [esp + 0x10], ebx
or dword [0x434fcc], 0xffffffff
call fcn.00403a7d
mov dword [esp + 0x14], eax
call fcn.0040398b
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
pop ebp
je 0x4038ef
push 0x200010
push dword [esp + 0x10]
call fcn.00405979
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
call fcn.004058fc
push 0x40a32c
push esi
mov edi, eax
call sub.KERNEL32.dll_lstrcatW
cmp edi, ebx
je 0x403806
push 0x40a328
push esi
call sub.KERNEL32.dll_lstrcatW
push str..tmp
push esi
call sub.KERNEL32.dll_lstrcatW
mov ebp, 0x441800
push ebp
push esi
call dword [sym.imp.KERNEL32.dll_lstrcmpiW]
test eax, eax
je 0x4037b9
cmp edi, ebx
push esi
je 0x40382e
call fcn.00405862
jmp 0x403833
call fcn.004058df
push esi
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
cmp word [0x440800], bx
jne 0x40384e
push ebp
push 0x440800
call fcn.00406234
push dword [esp + 0x18]
push section..ndata
call fcn.00406234
movzx eax, word [0x40a316]
movzx ecx, word [0x40a314]
shl eax, 0x10
or eax, ecx
push 0x1a
mov dword [0x436800], eax
pop ebp
mov edi, 0x42aa48
mov eax, dword [0x434f30]
push dword [eax + 0x120]
push edi
call fcn.00406256
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
cmp dword [esp + 0x10], ebx
je 0x4038d9
push 1
push edi
push 0x443800
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x4038d9
push ebx
push edi
call fcn.004060d5
mov eax, dword [0x434f30]
push dword [eax + 0x124]
push edi
call fcn.00406256
push edi
call fcn.00405914
cmp eax, ebx
je 0x4038d9
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc word [0x436800]
dec ebp
jne 0x40387c
push ebx
push esi
call fcn.004060d5
jmp 0x4037b9
cmp dword [0x434fb4], ebx
je 0x403973
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 0x403943
lea eax, [esp + 0x20]
push eax
push str.SeShutdownPrivilege
push ebx
call dword [sym.imp.ADVAPI32.dll_LookupPrivilegeValueW]
push ebx
push ebx
lea eax, [esp + 0x24]
push ebx
push eax
push ebx
push dword [esp + 0x28]
mov dword [esp + 0x34], 1
mov dword [esp + 0x40], 2
call dword [sym.imp.ADVAPI32.dll_AdjustTokenPrivileges]
push 4
call fcn.0040660e
cmp eax, ebx
mov esi, 0x80040002
je 0x40395f
push esi
push 0x25
push ebx
push ebx
push ebx
call eax
test eax, eax
je 0x40396c
push esi
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403973
push 9
call fcn.0040140b
mov eax, dword [0x434fcc]
cmp eax, 0xffffffff
je 0x403981
mov dword [esp + 0x10], eax
push dword [esp + 0x10]
call dword [sym.imp.KERNEL32.dll_ExitProcess]