obfuscated teamster_jr Hello monks, Here's my latest effort, it's pure perl, so should run anywhere. It is parametised so it will take the number of boxes in the output as an argument in the form: <code> # perl blah.pl 19x20</code> (19x20 is the default) This will produce a variable sized file (default is normally around 6Mb) called al.XXX (where XXX would reveal the surprise) in the directory from which it is run <code> $_=q^($w,$h)=s plit/x/,shift||"19x20";$q=10+10*$w;$r=20+10*$h;@m=((31,(15)x ($w-1))x$h,(31)x$w);$m[$c]|=16,!(@a=grep!($m[$c+$$_[0]]&16+$|*$$_[1]),[- 1,8],[1,1],[$w,4],[-$w,2])?$c=pop@p:${($i,$j)=@{$a[rand@a ]};$m[$c]&=~ (8/$j);push@p,$c;$m[$c+=$i]&=~$j;++$u-$h*$w+$h||map$_&=15,@m,splice(@p), $c=$|=1}until$|&$c+2>$w*$h;$C=$q-4*int$q/4;$A=($q+$C)*$r;$u=pack"x"x(($q +$C)*$r);subZd{my($f,$g,$h,$i,$e)=@_;@a=sort{"000$a"<=>"000$b"}$h,$i||$h ;for($a[0]..$a[1]){$s=($r-$_)*($q+$C)+$f;vec($u,$_,8)=$e||2 for$s..$s+$g -1}};subZt{$a=shift;$x=10*($a%$w);$y=10*(2+int$a/$w)};dZ9,$q-20,10;dZ9,$ q-20,$r-10;dZ9,1,10,$r-10;dZ$q-11,1,10,$r-10;map{t$_;if($_%$w){$m[$_]&2? d$x-1,11,$y:"";$m[$_]&8?d$x+9,1,$y-10,$y:"";}}0..-1+$w*$h;$F="LIST";open (FH,">al.avi");binmodeZFH;selectZFH;printZpack"V*",/\d/?$_:unpack"V*",$_ Zfor"RIFF",(1256+($A+24)*($B=3+scalar@p)),"AVIZ$F",1216,"hdrlavih",56,50 0000,32,0,2064,$B,0,1,$A,$q,$r,(0)x4,$F,1140,"strlstrh",56,"vids",(0)x4, 1,10,0,$B,$A,-1,(0)x3,"strf",1064,40,$q,$r,pack("vv",1,8),0,$A,(0)x4,pac k(("C"x1024),(0xff)x3,0,128),$F,(4+($A+8)*$B),"movi";map{printZSTDOUT"." ;t$z||1;$l=$x;$t=$y;t$_;$ri=$x;if($l>$x){$ri=$l;$l=$x}d$l+2,5+$ri-$l,($t <$y?$t:$y)-7,($t<$y?$y:$t)-3,1;$z=$_;print"00db".pack("V",$A).$u}@p,(-1+ $w*$h)x3;print"idx1".pack"V",16*$B;$o=4;for(1..$B){print"00db".pack"VVV" ,16,$o,$A;$o+=$A+8}^;s#((?{$a.=$+})\s?(\S*)\s?)*#$a=~s/Z/ /g;$a#see </code> (that's supposed to be a clapboard btw!) <strike>If there is enough interest i'll write a deobfuscation/explanation of what went into it,</strike> I've written a clean version [542789|here]. In the meantime some of my references and some other notes are in the spoiler below: <spoiler> I've tested the output in windows media player and mplayer (on windows and linux), however i couldn't get it working with winamp - i tried to fix it, but i'm not entirely sure it's not winamp. <ul> <li>the data is generated by a hacked up version of [301203|this] <li>[http://www.fortunecity.com/skyscraper/windows/364/bmpffrmt.html#bmih|BMP file format] <li>I used [80749|tachyon's] post [315232|here] to remind me a bit about packing and to explore bmp file headers <li>An excellent reference on the avi format can be found [http://198.170.116.198/avitech.html#AVIDIB|here] </spoiler> I hope you all enjoy it. Alex update: Add link to [542789|explanation]. Also use V not L (see [550028|this]) to force correct endianness - this should now work on mac's and fixed a bug where it didn't work for 5.8.8