Function at 0x403391
Capabilities:
Accept command line arguments
Copy file
Create directory
Delete file
Get common file path
Get file system object information
Set current directory
Shutdown system
Terminate process

Disassembly:
sub esp, 0x184
push ebx
push ebp
push esi
xor ebx, ebx
push edi
mov dword [esp + 0x1c], ebx
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x18], ebx
mov byte [esp + 0x14], 0x20
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push 0x8001
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
push ebx
call dword [sym.imp.ole32.dll_OleInitialize]
push 8
mov dword [0x433cb8], eax
call fcn.00405a2f
push ebx
push 0x160
mov dword [0x433bc0], eax
lea eax, [esp + 0x3c]
push eax
push ebx
push 0x40846f
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x431bc0
call fcn.0040593e
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
push eax
mov edi, 0x448000
push edi
call fcn.0040593e
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x448000], 0x22
mov dword [0x433bc8], eax
mov eax, edi
jne 0x403434
mov byte [esp + 0x14], 0x22
mov eax, 0x448001
push dword [esp + 0x14]
push eax
call fcn.0040567b
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov esi, eax
mov dword [esp + 0x20], esi
jmp 0x4034d2
cmp al, 0x20
jne 0x40345a
inc esi
cmp byte [esi], 0x20
je 0x403454
cmp byte [esi], 0x22
mov byte [esp + 0x14], 0x20
jne 0x40346a
inc esi
mov byte [esp + 0x14], 0x22
cmp byte [esi], 0x2f
jne 0x4034c0
inc esi
cmp byte [esi], 0x53
jne 0x403485
mov al, byte [esi + 1]
cmp al, 0x20
je 0x403480
cmp al, bl
jne 0x403485
or dword [esp + 0x18], 2
push 4
pop ebp
push ebp
push str.NCRC
push esi
call fcn.004032ff
add esp, 0xc
test eax, eax
jne 0x4034aa
mov al, byte [esi + 4]
cmp al, 0x20
je 0x4034a6
cmp al, bl
jne 0x4034aa
or dword [esp + 0x18], ebp
push ebp
lea eax, [esi - 2]
push 0x408454
push eax
call fcn.004032ff
add esp, 0xc
test eax, eax
je 0x4034de
push dword [esp + 0x14]
push esi
call fcn.0040567b
mov esi, eax
cmp byte [esi], 0x22
jne 0x4034d2
inc esi
mov al, byte [esi]
cmp al, bl
jne 0x403450
jmp 0x4034fa
push ebp
lea eax, [esi - 2]
push ebx
push eax
call fcn.004073fb
add esp, 0xc
add esi, 2
push esi
push 0x449000
call fcn.0040593e
mov ebp, 0x44d000
push ebp
push 0x1000
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.004032cb
test eax, eax
jne 0x403538
push 0xffb
push ebp
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push ebp
call sub.KERNEL32.dll_lstrcatA
call fcn.004032cb
test eax, eax
je 0x4035c5
push 0x44c000
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push dword [esp + 0x18]
call fcn.00403030
mov dword [esp + 0x10], eax
cmp eax, ebx
jne 0x4035c5
cmp dword [0x433c24], ebx
je 0x4035b5
push ebx
push edi
call fcn.0040567b
mov esi, eax
jmp 0x40357c
push 4
push 0x408444
push esi
call fcn.004032ff
add esp, 0xc
test eax, eax
je 0x403580
dec esi
cmp esi, edi
jae 0x403567
mov dword [esp + 0x10], str.Error_launching_installer
cmp esi, edi
jb 0x4035f0
mov byte [esi], bl
add esi, 4
push esi
call fcn.00405efc
test eax, eax
je 0x4035c5
push esi
push 0x449000
call fcn.0040593e
push esi
push 0x44a000
call fcn.0040593e
mov dword [esp + 0x10], ebx
or dword [0x433cac], 0xffffffff
call fcn.004052e6
mov dword [esp + 0x1c], eax
call fcn.0040334f
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x4036c5
push 0x200010
push dword [esp + 0x14]
call fcn.00405615
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push ebp
call sub.KERNEL32.dll_lstrcatA
mov esi, 0x44b000
push esi
push ebp
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x4035c5
push ebx
push ebp
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push ebp
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x449000], bl
jne 0x40362e
push esi
push 0x449000
call fcn.0040593e
push dword [esp + 0x20]
push section..ndata
call fcn.0040593e
push 0x408434
push 0x435000
call fcn.0040593e
push 0x1a
pop edi
mov esi, 0x423990
mov eax, dword [0x433bcc]
push dword [eax + 0x120]
push esi
call fcn.00405f7e
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x4036b0
push 1
push esi
push 0x44f000
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x4036b0
push ebx
push esi
call fcn.00406368
mov eax, dword [0x433bcc]
push dword [eax + 0x124]
push esi
call fcn.00405f7e
push esi
call fcn.004055b4
cmp eax, ebx
je 0x4036b0
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x435000]
dec edi
jne 0x403653
push ebx
push ebp
call fcn.00406368
jmp 0x4035c5
cmp dword [0x433c94], ebx
je 0x403748
push 3
call fcn.00405a2f
push 4
mov ebp, eax
call fcn.00405a2f
push 5
mov esi, eax
call fcn.00405a2f
mov edi, eax
cmp ebp, ebx
je 0x403734
cmp esi, ebx
je 0x403734
cmp edi, ebx
je 0x403734
lea eax, [esp + 0x20]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x403734
lea eax, [esp + 0x28]
push eax
push str.SeShutdownPrivilege
push ebx
call esi
push ebx
push ebx
push ebx
lea eax, [esp + 0x30]
push eax
push ebx
push dword [esp + 0x34]
mov dword [esp + 0x3c], 1
mov dword [esp + 0x48], 2
call edi
push ebx
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x403748
push 9
call fcn.0040141a
mov eax, dword [0x433cac]
cmp eax, 0xffffffff
je 0x403756
mov dword [esp + 0x1c], eax
push dword [esp + 0x1c]
jmp 0x4035ea