Function at 0x4036c4
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 [0x7c7178], eax
call fcn.00406004
push ebx
push 0x160
mov dword [0x7c7088], eax
lea eax, [esp + 0x3c]
push eax
push ebx
push 0x408abf
call dword [sym.imp.SHELL32.dll_SHGetFileInfoA]
push str.NSIS_Error
push 0x7c3080
call fcn.00405d59
call dword [sym.imp.KERNEL32.dll_GetCommandLineA]
push eax
mov edi, 0x7f0050
push edi
call fcn.00405d59
push ebx
call dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
cmp byte [0x7f0050], 0x22
mov dword [0x7c7090], eax
mov eax, edi
jne 0x403767
mov byte [esp + 0x14], 0x22
mov eax, 0x7f0051
push dword [esp + 0x14]
push eax
call fcn.00405a96
push eax
call dword [sym.imp.USER32.dll_CharNextA]
mov esi, eax
mov dword [esp + 0x20], esi
jmp 0x403805
cmp al, 0x20
jne 0x40378d
inc esi
cmp byte [esi], 0x20
je 0x403787
cmp byte [esi], 0x22
mov byte [esp + 0x14], 0x20
jne 0x40379d
inc esi
mov byte [esp + 0x14], 0x22
cmp byte [esi], 0x2f
jne 0x4037f3
inc esi
cmp byte [esi], 0x53
jne 0x4037b8
mov al, byte [esi + 1]
cmp al, 0x20
je 0x4037b3
cmp al, bl
jne 0x4037b8
or dword [esp + 0x18], 2
push 4
pop ebp
push ebp
push str.NCRC
push esi
call fcn.0040364a
add esp, 0xc
test eax, eax
jne 0x4037dd
mov al, byte [esi + 4]
cmp al, 0x20
je 0x4037d9
cmp al, bl
jne 0x4037dd
or dword [esp + 0x18], ebp
push ebp
lea eax, [esi - 2]
push str.__D
push eax
call fcn.0040364a
add esp, 0xc
test eax, eax
je 0x403811
push dword [esp + 0x14]
push esi
call fcn.00405a96
mov esi, eax
cmp byte [esi], 0x22
jne 0x403805
inc esi
mov al, byte [esi]
cmp al, bl
jne 0x403783
jmp 0x40382d
push ebp
lea eax, [esi - 2]
push ebx
push eax
call fcn.00407b05
add esp, 0xc
add esi, 2
push esi
push 0x7f2054
call fcn.00405d59
mov ebp, 0x7fa064
push ebp
push 0x2004
call dword [sym.imp.KERNEL32.dll_GetTempPathA]
call fcn.00403616
test eax, eax
jne 0x40386b
push 0x1fff
push ebp
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
push str.Temp
push ebp
call sub.KERNEL32.dll_lstrcatA
call fcn.00403616
test eax, eax
je 0x4038ff
push 0x7f8060
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
push dword [esp + 0x18]
call fcn.004033d1
mov dword [esp + 0x10], eax
cmp eax, ebx
jne 0x4038ff
cmp dword [0x7c70e4], ebx
je 0x4038e8
push ebx
push edi
call fcn.00405a96
mov esi, eax
jmp 0x4038af
push 4
push str.___
push esi
call fcn.0040364a
add esp, 0xc
test eax, eax
je 0x4038b3
dec esi
cmp esi, edi
jae 0x40389a
mov dword [esp + 0x10], str.Error_launching_installer
cmp esi, edi
jb 0x40392a
mov byte [esi], bl
add esi, 4
push esi
call fcn.00406432
test eax, eax
je 0x4038ff
push esi
push 0x7f2054
call fcn.00405d59
push esi
push 0x7f4058
call fcn.00405d59
mov dword [esp + 0x10], ebx
or dword [0x7c716c], 0xffffffff
call fcn.004056e1
push 1
mov dword [esp + 0x20], eax
call fcn.00405e23
call fcn.0040369a
call dword [sym.imp.ole32.dll_OleUninitialize]
cmp dword [esp + 0x10], ebx
je 0x4039ff
push 0x200010
push dword [esp + 0x14]
call fcn.00405a30
push 2
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push str.nsu.tmp
push ebp
call sub.KERNEL32.dll_lstrcatA
mov esi, 0x7f605c
push esi
push ebp
call dword [sym.imp.KERNEL32.dll_lstrcmpiA]
test eax, eax
je 0x4038ff
push ebx
push ebp
call dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
push ebp
call dword [sym.imp.KERNEL32.dll_SetCurrentDirectoryA]
cmp byte [0x7f2054], bl
jne 0x403968
push esi
push 0x7f2054
call fcn.00405d59
push dword [esp + 0x20]
push section..ndata
call fcn.00405d59
push 0x408a84
push 0x7ca004
call fcn.00405d59
push 0x1a
pop edi
mov esi, 0x7a71e8
mov eax, dword [0x7c7094]
push dword [eax + 0x120]
push esi
call fcn.004064b4
push esi
call dword [sym.imp.KERNEL32.dll_DeleteFileA]
cmp dword [esp + 0x10], ebx
je 0x4039ea
push 1
push esi
push 0x7fe06c
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
je 0x4039ea
push ebx
push esi
call fcn.004068a1
mov eax, dword [0x7c7094]
push dword [eax + 0x124]
push esi
call fcn.004064b4
push esi
call fcn.004059cf
cmp eax, ebx
je 0x4039ea
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [esp + 0x10], ebx
inc byte [0x7ca004]
dec edi
jne 0x40398d
push ebx
push ebp
call fcn.004068a1
jmp 0x4038ff
cmp dword [0x7c7154], ebx
je 0x403a82
push 3
call fcn.00406004
push 4
mov ebp, eax
call fcn.00406004
push 5
mov esi, eax
call fcn.00406004
mov edi, eax
cmp ebp, ebx
je 0x403a6e
cmp esi, ebx
je 0x403a6e
cmp edi, ebx
je 0x403a6e
lea eax, [esp + 0x20]
push eax
push 0x28
call dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
push eax
call ebp
test eax, eax
je 0x403a6e
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 0x403a82
push 9
call fcn.0040141d
mov eax, dword [0x7c716c]
cmp eax, 0xffffffff
je 0x403a90
mov dword [esp + 0x1c], eax
push dword [esp + 0x1c]
jmp 0x403924