Function at 0x403591
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 0x446a20
mov dword [0x44aad0], eax
call fcn.00405f51
mov esi, 0x47d000
mov edi, 0x2000
push esi
push edi
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.0040355d
mov ebp, dword [sym.imp.KERNEL32.dll_lstrcatA]
test eax, eax
jne 0x40360e
push 0x1ffb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push esi
call ebp
call fcn.0040355d
test eax, eax
je 0x40375a
mov esi, 0x473000
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 [0x473000], 0x22
mov dword [0x44aa20], eax
mov eax, esi
jne 0x40364c
mov byte [esp + 0x14], 0x22
mov eax, 0x473001
push dword [esp + 0x14]
push eax
call fcn.00405a79
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
mov cl, byte [eax]
test cl, cl
je 0x4036de
cmp cl, 0x20
jne 0x403672
inc eax
cmp byte [eax], 0x20
je 0x40366c
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403682
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x4036ba
inc eax
cmp byte [eax], 0x53
jne 0x40369b
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x40369b
or ebx, 2
cmp dword [eax], 0x4352434e
jne 0x4036b1
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x4036b1
or ebx, 4
cmp dword [eax - 2], 0x3d442f20
je 0x4036cc
push dword [esp + 0x14]
push eax
call fcn.00405a79
cmp byte [eax], 0x22
jne 0x403661
inc eax
jmp 0x403661
and byte [eax - 2], 0
add eax, 2
push eax
push 0x475000
call fcn.00405f51
push ebx
call fcn.00403067
cmp eax, edi
mov dword [esp + 0x10], eax
jne 0x40375a
cmp dword [0x44aa34], edi
je 0x403743
push edi
push esi
call fcn.00405a79
mov edi, eax
cmp edi, esi
jb 0x40370c
cmp dword [edi], 0x3d3f5f20
je 0x40370c
dec edi
jmp 0x4036fd
cmp edi, esi
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x403786
and byte [edi], 0
add edi, 4
push edi
call fcn.00405b30
test eax, eax
je 0x40375a
push edi
push 0x475000
call fcn.00405f51
push edi
push 0x477000
call fcn.00405f51
and dword [esp + 0x10], 0
or dword [0x44aacc], 0xffffffff
call fcn.0040398f
push 1
mov dword [esp + 0x1c], eax
call fcn.00406257
call fcn.00403948
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], 0
je 0x40388b
push 0x200010
push dword [esp + 0x14]
call fcn.004057f0
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
and dword [esp + 0x14], 0
mov edi, 0x42a3b1
mov esi, 0x42a3b0
mov ebx, 0x4283b0
push 0x47d000
push edi
mov byte [0x42a3b0], 0x22
call fcn.00405f51
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 0x403871
push 0x2000
push ebx
push dword [0x44aa20]
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
lea eax, [eax + 0x4283aa]
push 0x40970d
push eax
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x40375a
push 0
push edi
push ebx
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403871
push 0
push edi
call fcn.00405c8d
cmp byte [0x475000], 0
je 0x40382f
push 0x475000
push ebx
call fcn.00405f51
jmp 0x403835
push ebx
call fcn.00405a95
push 0x409784
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.00405a4d
push 0x475000
push esi
call fcn.00405769
test eax, eax
je 0x403871
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 0x40379a
jmp 0x40375a
cmp dword [0x44aab4], 0
je 0x403930
push str.ADVAPI32.dll
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov edi, eax
test edi, edi
je 0x40391b
mov esi, dword [sym.imp.KERNEL32.dll_GetProcAddress]
push str.OpenProcessToken
push edi
call esi
push str.LookupPrivilegeValueA
push edi
mov ebx, eax
call esi
push str.AdjustTokenPrivileges
push edi
mov ebp, eax
call esi
test ebx, ebx
mov esi, eax
je 0x40391b
test ebp, ebp
je 0x40391b
test esi, esi
je 0x40391b
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebx
test eax, eax
je 0x40391b
lea eax, [esp + 0x24]
xor edi, edi
push eax
push str.SeShutdownPrivilege
push edi
call ebp
push edi
push edi
lea eax, [esp + 0x28]
push edi
push eax
push edi
push dword [esp + 0x30]
mov dword [esp + 0x38], 1
mov dword [esp + 0x44], 2
call esi
push 0
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403930
push 9
call fcn.00401440
mov eax, dword [0x44aacc]
cmp eax, 0xffffffff
je 0x40393e
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]