Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

SarahM++ for a fun obfuscation! You had me going in circles for a few minutes... I felt like I was chasing my tail!

Deobfuscation follows:
First we strip out all the comments being careful to remove *only* the comments. That leaves us with:
sub p () { use constant P=>' )'; use constant Q=>'* '; substr(P,1,1); } sub q () { eval join '', split /./, s//rxlgcdjqfvbpsohduwyvcmbjdxopd/ & map { tr/[a..z]/[z..a]/ . P | Q } split //; } $, = p; print q; #Just Another Perl Hacktress ;^P
That last line fooled you didn't it?

The q subroutine is only there to confuse you and is not used at all. So we strip it out leaving us with:
sub p () { use constant P=>' )'; use constant Q=>'* '; substr(P,1,1); } $, = p; print q; #Just Another Perl Hacktress ;^P
"What is she up to?", you ask?
$, (output field seperator) is set to the return value of the p subroutine (a space) but the real purpose of the p subroutine is to set the value of the P constant to the string ' )'. $, is not even used so let's strip it down again.
use constant P => ' )'; print q; #Just Another Perl Hacktress ;^P
This can be rewritten as:
 print ' #Just Another Perl Hacktress '^' )'

A space XORed with a space yields a null (\000). A number sign (#) XORed with a ) yields a newline (\n).
The output is '\000\nJust Another Perl Hacktress '.

Fixed typo. Thanks LAI!


In reply to Re: A Hacktress' First Attempt by Mr. Muskrat
in thread A Hacktress' First Attempt by SarahM

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others making s'mores by the fire in the courtyard of the Monastery: (6)
As of 2022-12-07 17:17 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found

    Notices?