Hi gp2kumar, and welcome to PerlMonks!

...we dont have any rights to install or to run any .exe files...

In the spirit of portable software, which can run in such environments, consider using a portable version of Perl, such as Strawberry Perl's portable release (*-portable.zip at their site). With it, you can run Perl on a stick without having to install it on your machine.

Hope this helps!