This is a way to get hard disk serial number using console command from matlab:

Copy%// Get hard disk serial using windows console command
cmd         = 'wmic diskdrive get SerialNumber';
[~, result] = system(cmd);
%// Extract first hard disk serial number
fields      = textscan( result, '%s', 'Delimiter', '\n' );
fields      = strtrim(fields{1});
serialNo    = fields{2};

The same for the processor id:

Copy%// Get processor id using windows console command
cmd           = 'wmic cpu get ProcessorId';
[~, result]   = system(cmd);    
%// Extract first processor id
fields        = textscan( result, '%s', 'Delimiter', '\n' ); 
fields        = strtrim(fields{1});
processorId   = fields{2};

It's all about using console command wmic + [hardware name] + get + [attributename] and if you want to know the whole attributes available for some device you can use get in your command without naming any attribute, Example:

Copycommand = 'wmic csproduct get'

that will get all available attributes of your machine as a product and its values.