Function at 0x403404
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, 0x2d4
push ebx
push ebp
push esi
push edi
push 0x20
xor ebp, ebp
pop esi
mov dword [esp + 0x18], ebp
mov dword [esp + 0x10], str.Error_writing_temporary_file._Make_sure_your_temp_folder_is_valid.
mov dword [esp + 0x14], ebp
call dword [sym.imp.COMCTL32.dll_InitCommonControls]
push 0x8001
call dword [sym.imp.KERNEL32.dll_SetErrorMode]
push ebp
call dword [sym.imp.ole32.dll_OleInitialize]
push 8
mov dword [0x42a5d8], eax
call fcn.00405bdd
push ebp
push 0x2b4
mov dword [0x42a4e0], eax
lea eax, [esp + 0x38]
push eax
push ebp
push 0x408574
call dword [sym.imp.SHELL32.dll_SHGetFileInfoW]
push str.NSIS_Error
push 0x4294e0
call fcn.00405ad8
call dword [sym.imp.KERNEL32.dll_GetCommandLineW]
push eax
mov edi, 0x435000
push edi
call fcn.00405ad8
push ebp
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp word [0x435000], 0x22
mov dword [0x42a4e8], eax
mov eax, edi
jne 0x4034a4
push 0x22
pop esi
mov eax, 0x435002
push esi
push eax
call fcn.004057d5
push eax
call dword [sym.imp.USER32.dll_CharNextW]
mov esi, eax
mov dword [esp + 0x1c], esi
jmp 0x40354b
push 0x20
pop ebx
cmp ax, bx
jne 0x4034cd
add esi, 2
cmp word [esi], bx
je 0x4034c5
cmp word [esi], 0x22
jne 0x4034d9
push 0x22
add esi, 2
pop ebx
cmp word [esi], 0x2f
jne 0x403539
add esi, 2
cmp word [esi], 0x53
jne 0x4034fb
movzx eax, word [esi + 2]
cmp eax, 0x20
je 0x4034f6
cmp ax, bp
jne 0x4034fb
or dword [esp + 0x14], 2
push 4
push str.NCRC
push esi
call fcn.00403381
add esp, 0xc
test eax, eax
jne 0x403522
movzx eax, word [esi + 8]
cmp eax, 0x20
je 0x40351d
cmp ax, bp
jne 0x403522
or dword [esp + 0x14], 4
push 4
lea eax, [esi - 4]
push str.__D
push eax
call fcn.00403381
add esp, 0xc
test eax, eax
je 0x403559
push ebx
push esi
call fcn.004057d5
mov esi, eax
cmp word [esi], 0x22
jne 0x40354b
add esi, 2
movzx eax, word [esi]
cmp ax, bp
jne 0x4034bd
jmp 0x403576
push 8
lea eax, [esi - 4]
push ebp
push eax
call fcn.004075e8
add esp, 0xc
add esi, 4
push esi
push 0x435800
call fcn.00405ad8
mov ebx, 0x437800
push ebx
push 0x400
call dword [sym.imp.KERNEL32.dll_GetTempPathW]
call fcn.0040334d
test eax, eax
jne 0x4035b4
push 0x3fb
push ebx
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryW]
push str.Temp
push ebx
call sub.KERNEL32.dll_lstrcatW
call fcn.0040334d
test eax, eax
je 0x403646
push 0x437000
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push dword [esp + 0x14]
call fcn.00403108
mov dword [esp + 0x10], eax
cmp eax, ebp
jne 0x403646
cmp dword [0x42a544], ebp
je 0x403636
push ebp
push edi
call fcn.004057d5
mov esi, eax
jmp 0x4035fa
push 4
push str.___
push esi
call fcn.00403381
add esp, 0xc
test eax, eax
je 0x4035fe
sub esi, 2
cmp esi, edi
jae 0x4035e3
mov dword [esp + 0x10], str.Error_launching_installer
cmp esi, edi
jb 0x403671
xor eax, eax
mov word [esi], ax
add esi, 8
push esi
call fcn.0040605f
test eax, eax
je 0x403646
push esi
push 0x435800
call fcn.00405ad8
push esi
push 0x436000
call fcn.00405ad8
mov dword [esp + 0x10], ebp
or dword [0x42a5cc], 0xffffffff
call fcn.0040541a
mov dword [esp + 0x18], eax
call fcn.004033da
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebp
je 0x403748
push 0x200010
push dword [esp + 0x14]
call fcn.0040576f
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push 0x408518
push ebx
call sub.KERNEL32.dll_lstrcatW
mov esi, 0x436800
push esi
push ebx
call dword [sym.imp.KERNEL32.dll_lstrcmpiW]
test eax, eax
je 0x403646
push ebp
push ebx
call dword [sym.imp.KERNEL32.dll_CreateDirectoryW]
push ebx
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryW]
cmp word [0x435800], bp
jne 0x4036b0
push esi
push 0x435800
call fcn.00405ad8
push dword [esp + 0x1c]
push section..ndata
call fcn.00405ad8
push 0x408514
push 0x42b800
call fcn.00405ad8
push 0x1a
pop edi
mov esi, 0x4209a0
mov eax, dword [0x42a4ec]
push dword [eax + 0x120]
push esi
call fcn.004060e6
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
cmp dword [esp + 0x10], ebp
je 0x403732
push 1
push esi
push 0x438800
call dword [sym.imp.KERNEL32.dll_CopyFileW]
test eax, eax
je 0x403732
push ebp
push esi
call fcn.00406550
mov eax, dword [0x42a4ec]
push dword [eax + 0x124]
push esi
call fcn.004060e6
push esi
call fcn.0040570e
cmp eax, ebp
je 0x403732
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebp
inc word [0x42b800]
dec edi
jne 0x4036d5
push ebp
push ebx
call fcn.00406550
jmp 0x403646
cmp dword [0x42a5b4], ebp
je 0x4037cb
push 3
call fcn.00405bdd
push 4
mov ebx, eax
call fcn.00405bdd
push 5
mov esi, eax
call fcn.00405bdd
mov edi, eax
cmp ebx, ebp
je 0x4037b7
cmp esi, ebp
je 0x4037b7
cmp edi, ebp
je 0x4037b7
lea eax, [esp + 0x1c]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebx
test eax, eax
je 0x4037b7
lea eax, [esp + 0x24]
push eax
push str.SeShutdownPrivilege
push ebp
call esi
push ebp
push ebp
push ebp
lea eax, [esp + 0x2c]
push eax
push ebp
push dword [esp + 0x30]
mov dword [esp + 0x38], 1
mov dword [esp + 0x44], 2
call edi
push ebp
push 2
call dword [sym.imp.USER32.dll_ExitWindowsEx]
test eax, eax
jne 0x4037cb
push 9
call fcn.0040141a
mov eax, dword [0x42a5cc]
cmp eax, 0xffffffff
je 0x4037d9
mov dword [esp + 0x18], eax
push dword [esp + 0x18]
jmp 0x40366b