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Cursed Map

by kilinrax (Deacon)
on Jun 07, 2001 at 23:57 UTC ( #86705=obfuscated: print w/ replies, xml ) Need Help??

#!/usr/bin/perl -w use strict;sub p{$_="\c];\a \3SE\$\5!.\f) Ut4)\aHI#\5\f%) "; y< \n>++d;@_ =/.+?(?=\d|$)/gm; $== $|; ;y ,"-/ ,\f- ,; $; =$_ ;; ;y{;E!\a4.;@ \0-z} ^</*:> nb^d;; ; map {s }\W # }}xg ;} @_; @_= map { chr (($ == @{[/ ./gx ]}) ?($-= ++$= **3,$%+= $-,)[0]: $%/2)}@_ ,q++;map {s[(.) ]~@_= map{$_^$',$ _^$+}@_~ex ;}/../g ;${;} =~s{.}% map{$_^= ${&}}@_;$\ .=shift() ;%ges; $\.=$/; print $'; } p
Update: Changed "\r" as it was causing portability issues (kilinrax)
Second Update: Re-written, fixed, and tested for MacPerl (kilinrax)
Third Update: Neatened up 'bones' (kilinrax)

Comment on Cursed Map
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Re: Cursed Map
by iamcal (Friar) on Jun 08, 2001 at 12:39 UTC
    waaaaay to complicated for me. the best analysis i can do is:
    # # use strict # use strict; # # the japh has one sub routine which it calls once # sub p{ # # First we set up $_. nothing dodgy here except it contains whitespace # $_="\c];\a\3SE\$\5!.\f)Ut4)\aHI\r\5\f%)"; # # here's were the nasty delimiters start # # this is actually "y| \n||d;" which removes all spaces and carriage # returns from $_ # # $_ contains the following chars: (decimal) # 29 59 7 3 83 69 36 5 33 46 12 41 85 116 52 41 7 72 73 13 5 12 37 41 # y< \n>++d; # # do some tricky regexp stuff which actually evaluates to # # @_ = /(.{14})(.{10})/; # @_=/.+?(?=\d|$)/gx; # # set $= to 0 # $==$|; # # transliterate $_ so that it equals: (decimal) # 29 59 7 3 83 69 14 5 33 24 12 19 85 116 52 19 7 72 73 13 5 12 15 19 # y,"-/ ,\f- ,; # # assign the string in $_ to $; # $;=$_; # # a transliteraion i can't decode makes $_ equal to: (decimal) # 60 58 47 42 62 58 # y{;E!\a4.;@\0-z} ^</*:>nb^d; # # some semicolons # ;; # # remove non alpha numerics from @_ # @_ = ('SEUt','4HI'); # map {s}\W # }}xg;}@_; # # do a scary map on @_,'' to get chr(83),chr(52),chr(0) # @_=map{ chr( ($==@{[/./g]}) ? ($-=++$=**3,$%+=$-)[0] : $%/2 ); }@_,''; # # replace pairs of characters in $_ with perl expressions and evaluate + them # @_ = qw|W S R V Q U T P j n o k l h i m t p q u r v w s|; # map{ s[(.)]~@_=map{$_^$',$_^$+}@_~e; }/../g; # # go through each char of $;, doing a binary XOR with the string at $_ # # $\ ends up equal to 'Just another Perl hackerJust another Perl hacke +r' # $;=~s{.}%map{$_^=$&}@_;$\.=shift;%ge; # # slap a line ending on $\ # $\.=$/; # # print what followed the last regexp match # print $'; # # end the sub # } # # call it # p;
Ripping Apart the Cursed Map
by Mr. Muskrat (Abbot) on Aug 22, 2003 at 21:19 UTC

    I was reading kilinrax's website the other day (nice layout BTW) and I noticed something on the obfuscations page. It says that Cursed Map "has yet to be successfully de-obfuscated by anyone."

    Well, I took that as a challenge whether it was meant that way or not!

    I had quite a bit of fun tearing this apart. I truly hope that I have successfully de-obfuscated it. I have to admit that it took longer than I initially thought that it would.

    If you want to figure out Cursed Map for yourself, stop reading now!

Re: Cursed Map
by adamcrussell (Hermit) on Jun 10, 2001 at 05:25 UTC
    Cursed indeed!! Especially if you are running MacPerl. MacPerl takes \r (ASCII 13) and automagically gives you a line feed (ASCII 10). Due to this, under MacPerl this obfuscation yields
    Just another Perl hfdlbu

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