Function at 0x4031a7
Capabilities:
Accept command line arguments
Copy file
Create directory
Delete file
Get common file path
Shutdown system
Terminate process

Disassembly:
sub esp, 0x20
push ebx
push ebp
push esi
xor ebx, ebx
push edi
mov dword [esp + 0x18], ebx
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov byte [esp + 0x14], 0x20
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push str.NSIS_Error
push 0x42e820
mov dword [0x42f0d0], eax
call sub.KERNEL32.dll_lstrcpyA
mov esi, 0x436400
mov edi, 0x400
push esi
push edi
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.00403173
mov ebp, dword [sym.imp.KERNEL32.dll_lstrcatA]
test eax, eax
jne 0x403224
push 0x3fb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push esi
call ebp
call fcn.00403173
test eax, eax
je 0x40336b
mov esi, 0x435000
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push edi
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
push eax
push esi
call dword [sym.imp.KERNEL32.dll_lstrcpynA]
xor edi, edi
push edi
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x435000], 0x22
mov dword [0x42f020], eax
mov eax, esi
jne 0x403262
mov byte [esp + 0x14], 0x22
mov eax, 0x435001
push dword [esp + 0x14]
push eax
call fcn.004054d0
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
jmp 0x4032dc
cmp cl, 0x20
jne 0x403284
inc eax
cmp byte [eax], 0x20
je 0x40327e
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403294
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x4032cc
inc eax
cmp byte [eax], 0x53
jne 0x4032ad
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x4032ad
or ebx, 2
cmp dword [eax], 0x4352434e
jne 0x4032c3
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x4032c3
or ebx, 4
cmp dword [eax - 2], 0x3d442f20
je 0x4032e4
push dword [esp + 0x14]
push eax
call fcn.004054d0
cmp byte [eax], 0x22
jne 0x4032dc
inc eax
mov cl, byte [eax]
test cl, cl
jne 0x403279
jmp 0x4032f6
and byte [eax - 2], 0
add eax, 2
push eax
push 0x435400
call sub.KERNEL32.dll_lstrcpyA
push ebx
call fcn.00402c60
cmp eax, edi
mov dword [esp + 0x10], eax
jne 0x40336b
cmp dword [0x42f034], edi
je 0x40335b
push edi
push esi
call fcn.004054d0
mov edi, eax
jmp 0x403320
cmp dword [edi], 0x3d3f5f20
je 0x403324
dec edi
cmp edi, esi
jae 0x403317
cmp edi, esi
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x403397
and byte [edi], 0
add edi, 4
push edi
call fcn.00405585
test eax, eax
je 0x40336b
push edi
push 0x435400
call sub.KERNEL32.dll_lstrcpyA
push edi
push 0x435800
call sub.KERNEL32.dll_lstrcpyA
and dword [esp + 0x10], 0
or dword [0x42f0cc], 0xffffffff
call fcn.0040357e
mov dword [esp + 0x18], eax
call fcn.00403559
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], 0
je 0x40349c
push 0x200010
push dword [esp + 0x14]
call fcn.004052af
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
and dword [esp + 0x14], 0
mov edi, 0x429061
mov esi, 0x429060
mov ebx, 0x428c60
push 0x436400
push edi
mov byte [0x429060], 0x22
call sub.KERNEL32.dll_lstrcpyA
push str.nsu.tmp_
push esi
call ebp
push 0
push edi
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push str.Au_.exe
push esi
call ebp
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], 0
je 0x403482
push 0x400
push ebx
push dword [0x42f020]
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
lea eax, [eax + 0x428c5a]
push 0x409199
push eax
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x40336b
push 0
push edi
push ebx
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403482
push 0
push edi
call fcn.004056db
cmp byte [0x435400], 0
je 0x403440
push 0x435400
push ebx
call sub.KERNEL32.dll_lstrcpyA
jmp 0x403446
push ebx
call fcn.004054ec
push 0x409210
push esi
call ebp
push dword [esp + 0x1c]
push esi
call ebp
push str.___
push esi
call ebp
push ebx
push esi
call ebp
push esi
call fcn.004054a4
push 0x435400
push esi
call fcn.00405237
test eax, eax
je 0x403482
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
and dword [esp + 0x10], 0
inc byte [str.Au_.exe]
inc dword [esp + 0x14]
cmp dword [esp + 0x14], 0x1a
jl 0x4033ab
jmp 0x40336b
cmp dword [0x42f0b4], 0
je 0x403541
push str.ADVAPI32.dll
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov edi, eax
test edi, edi
je 0x40352c
mov esi, dword [sym.imp.KERNEL32.dll_GetProcAddress]
push str.OpenProcessToken
push edi
call esi
push str.LookupPrivilegeValueA
push edi
mov ebp, eax
call esi
push str.AdjustTokenPrivileges
push edi
mov ebx, eax
call esi
test ebp, ebp
mov edi, eax
je 0x40352c
test ebx, ebx
je 0x40352c
test edi, edi
je 0x40352c
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x40352c
lea eax, [esp + 0x24]
xor esi, esi
push eax
push str.SeShutdownPrivilege
push esi
call ebx
push esi
push esi
lea eax, [esp + 0x28]
push esi
push eax
push esi
push dword [esp + 0x30]
mov dword [esp + 0x38], 1
mov dword [esp + 0x44], 2
call edi
push 0
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403541
push 9
call fcn.0040141b
mov eax, dword [0x42f0cc]
cmp eax, 0xffffffff
je 0x40354f
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]