Function at 0x403776
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 0x452740
mov dword [0x4567f0], eax
call fcn.0040614e
mov esi, 0x489000
mov edi, 0x2000
push esi
push edi
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.00403742
mov ebp, dword [sym.imp.KERNEL32.dll_lstrcatA]
test eax, eax
jne 0x4037f3
push 0x1ffb
push esi
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push esi
call ebp
call fcn.00403742
test eax, eax
je 0x40393f
mov esi, 0x47f000
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 [0x47f000], 0x22
mov dword [0x456740], eax
mov eax, esi
jne 0x403831
mov byte [esp + 0x14], 0x22
mov eax, 0x47f001
push dword [esp + 0x14]
push eax
call fcn.00405c76
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov dword [esp + 0x1c], eax
mov cl, byte [eax]
test cl, cl
je 0x4038c3
cmp cl, 0x20
jne 0x403857
inc eax
cmp byte [eax], 0x20
je 0x403851
cmp byte [eax], 0x22
mov byte [esp + 0x14], 0x20
jne 0x403867
inc eax
mov byte [esp + 0x14], 0x22
cmp byte [eax], 0x2f
jne 0x40389f
inc eax
cmp byte [eax], 0x53
jne 0x403880
mov cl, byte [eax + 1]
or cl, 0x20
cmp cl, 0x20
jne 0x403880
or ebx, 2
cmp dword [eax], 0x4352434e
jne 0x403896
mov cl, byte [eax + 4]
or cl, 0x20
cmp cl, 0x20
jne 0x403896
or ebx, 4
cmp dword [eax - 2], 0x3d442f20
je 0x4038b1
push dword [esp + 0x14]
push eax
call fcn.00405c76
cmp byte [eax], 0x22
jne 0x403846
inc eax
jmp 0x403846
and byte [eax - 2], 0
add eax, 2
push eax
push 0x481000
call fcn.0040614e
push ebx
call fcn.0040308e
cmp eax, edi
mov dword [esp + 0x10], eax
jne 0x40393f
cmp dword [0x456754], edi
je 0x403928
push edi
push esi
call fcn.00405c76
mov edi, eax
cmp edi, esi
jb 0x4038f1
cmp dword [edi], 0x3d3f5f20
je 0x4038f1
dec edi
jmp 0x4038e2
cmp edi, esi
mov dword [esp + 0x10], str.Error_launching_installer
jb 0x40396b
and byte [edi], 0
add edi, 4
push edi
call fcn.00405d2d
test eax, eax
je 0x40393f
push edi
push 0x481000
call fcn.0040614e
push edi
push 0x483000
call fcn.0040614e
and dword [esp + 0x10], 0
or dword [0x4567ec], 0xffffffff
call fcn.00403b8c
push 1
mov dword [esp + 0x1c], eax
call fcn.00406454
call fcn.00403b2d
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], 0
je 0x403a70
push 0x200010
push dword [esp + 0x14]
call fcn.004059ed
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
and dword [esp + 0x14], 0
mov edi, 0x434f3d
mov esi, 0x434f3c
mov ebx, 0x432f3c
push 0x489000
push edi
mov byte [0x434f3c], 0x22
call fcn.0040614e
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 0x403a56
push 0x2000
push ebx
push dword [0x456740]
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameA]
lea eax, [eax + 0x432f36]
push 0x40a76d
push eax
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x40393f
push 0
push edi
push ebx
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x403a56
push 0
push edi
call fcn.00405e8a
cmp byte [0x481000], 0
je 0x403a14
push 0x481000
push ebx
call fcn.0040614e
jmp 0x403a1a
push ebx
call fcn.00405c92
push 0x40a7e4
push esi
call ebp
push dword [esp + 0x1c]
push esi
call ebp
push 0x40a7dc
push esi
call ebp
push ebx
push esi
call ebp
push esi
call fcn.00405c4a
push 0x481000
push esi
call fcn.00405966
test eax, eax
je 0x403a56
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 0x40397f
jmp 0x40393f
cmp dword [0x4567d4], 0
je 0x403b15
push str.ADVAPI32.dll
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
mov edi, eax
test edi, edi
je 0x403b00
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 0x403b00
test ebp, ebp
je 0x403b00
test esi, esi
je 0x403b00
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebx
test eax, eax
je 0x403b00
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 0x403b15
push 9
call fcn.00401440
mov eax, dword [0x4567ec]
cmp eax, 0xffffffff
je 0x403b23
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
call dword [sym.imp.KERNEL32.dll_ExitProcess]