Hacky Easter 2019

Overview

Challenge	Category	Flag
Teaser		unsolved
Twisted		he19-Eihb-UUVw-nObm-lxaW
Just Watch		he19-DwWd-aUU2-yVhE-SbaG
Sloppy Encryption		unsolved
Disco 2		unsolved
Call for Papers		unsolved
Dots		unsolved
Shell we argument		he19-Bxvs-Vno1-9l9D-49gX
Modern Art		unsolved
rorriM rorriM		unsolved
Stackunderflow		unsolved
Memeory 2.0		unsolved
Decrypt0r		unsolved
Symphony in HEX		unsolved
White Box		unsolved
Seen in Steem		unsolved
Every-Thing		unsolved
New Egg Design		unsolved
Egg storage		unsolved
CoUmpact DiAsc		unsolved
Scrambled Egg		unsolved
The Hunt: Misty Jungle		unsolved
The Hunt: Muddy Quagmire		unsolved
The Maze		unsolved
CAPTEG		unsolved
Level Hidden
Hidden 1		unsolved
Hidden 2		unsolved
Hidden 3		unsolved

Teaser

Challenge

In order to sweeten the waiting time, we are providing a teaser challenge in advance.
Download the video file, and find the teaser Easter egg.

Solution

The video seems to flash different colours. We use ffmpeg to find the number of frames:

$ ffprobe -v warning -show_frames he2019_teaser.mp4 | grep -c '\[/FRAME\]'
230400

so we find that it has 230400 frames, which all appear to be a single colour (mostly black and white, some purple).
230400 is exactly 480x480, so maybe each frame is a pixel and we need to convert this to an image, hopefully a QR code
let’s try it:

import moviepy.editor as mpe
from PIL import Image

# load video
video = mpe.VideoFileClip('he2019_teaser.mp4')


outimg = Image.new( 'RGB', (480,480), "white")
pixels_out = outimg.load()

framenum = 0
for frame in video.iter_frames():

    # set pixel to colour of video frame
    pixels_out[framenum%480,framenum/480] = (frame[0][0][0],frame[0][0][1],frame[0][0][2])
    framenum += 1

# save image
outimg.save("teaser_out.png","png")

which gives us the following image:

Egg

he19-th1s-isju-5tAt-Eazr

Flag

unsolved

---

Twisted

Challenge

As usual, the first one is very easy - just a little twisted, maybe.

Solution

We tried and failed to untwist it with gimp (filters → distort → IWarp). So we recreated it in QRazy Box, at least enough of it that it would decode.

Flag

he19-Eihb-UUVw-nObm-lxaW

---

Just Watch

Challenge

Just watch and read the password.

Then enter it in the egg-o-matic below. Lowercase only, and no spaces!

Solution

It’s in ASL finger spelling! They seem to have even used the hands from the following alphabet chart:

I spells out givemeasign, which we enter into the egg-o-matic to get our egg.

Egg

he19-DwWd-aUU2-yVhE-SbaG

Flag

he19-DwWd-aUU2-yVhE-SbaG

---

Sloppy Encryption

Challenge

The easterbunny is not advanced at doing math and also really sloppy.

He lost the encryption script while hiding your challenge. Can you decrypt it?

K7sAYzGlYx0kZyXIIPrXxK22DkU4Q+rTGfUk9i9vA60C/ZcQOSWNfJLTu4RpIBy/27yK5CBW+UrBhm0=

sloppy.rb

Solution

The code is:

require"base64"
puts"write some text and hit enter:"
input=gets.chomp
h=input.unpack('C'*input.length).collect{|x|x.to_s(16)}.join
ox='%#X'%h.to_i(16)
x=ox.to_i(16)*['5'].cycle(101).to_a.join.to_i
c=x.to_s(16).scan(/../).map(&:hex).map(&:chr).join
b=Base64.encode64(c)
puts"encrypted text:""#{b}"

So we need to reverse this

Egg

Flag

unsolved

---

Disco 2

Challenge

This year, we dance outside, yeaahh! See here.

https://hackyeaster.hacking-lab.com/hackyeaster/challenges/disco2/disco2.html

Solution

Egg

Flag

unsolved

---

Call for Papers

Challenge

Please read and review my CFP document, for the upcoming IAPLI Symposium.

I didn’t write it myself, but used some artificial intelligence.

What do you think about it?

IAPLI_Conference.docx

Solution

Egg

Flag

unsolved

---

Dots

Challenge

Uncover the dots’ secret!

Then enter the password in the egg-o-matic below. Uppercase only, and no spaces!

Solution

Egg

Flag

unsolved

---

Shell we argument

Challenge

Let’s see if you have the right arguments to get the egg.

z="
";ACz='he';CCz='ec';iHz='Gr';vEz='na';LBz='ye';OFz='aw';kDz=' u';lEz='r"';GBz='Pz';sDz='at';kEz='et';HCz=' m';wEz='be';az='in';pCz=' w';UGz='w=';qFz='-9';WFz='Ah';yz='ag';ABz='Lz';pGz=' 4';wz='/e';YHz='$a';JBz='8c';jFz='{';KDz=' i';lFz='{1';Kz='8a';Wz='tp';EFz='pe';bDz='" ';FIz='py';sGz=' 3';IDz='tw';PHz='$J';HDz=' B';oz='f3';uGz=' 9';lz='Tz';bz='Wz';IFz='y!';RCz='di';NEz='y ';SFz='lt';qDz='t.';XCz=' y';cHz='$i';JDz=': ';xGz='00';IHz='t=';GDz='s.';ICz='e ';iBz='oz';sz='ht';hGz=' +';gFz='sN';ODz=' /';PDz='-[';MDz='fo';uFz='$ ';mz='es';vFz=']]';cGz='[ ';WBz='nz';ZDz='d"';WHz='$W';FHz='$m';uz='ck';lDz='nd';HEz='ot';rHz='2';KHz='$B';rBz=' [';dDz='-R';Rz='hz';jGz='))';wBz='1 ';fBz='12';NHz='$F';PEz='yp';JCz='so';LGz='ce';jCz='on';CFz='gh';fFz='ti';nCz='cu';vz='Uz';jEz='do';dBz='ac';vHz='ro';JFz='$9';wHz='ws';TFz='qu';VCz='wi';jz='Iz';OEz='bo';yDz='t,';yGz='7';LHz='z$';fEz=' k';pHz='sl';ADz='er';mHz='om';nFz='=~';WGz='tc';oHz='o!';sHz=' x';NCz='um';cBz='cz';Iz='.p';EDz='gu';lBz='42';SCz='sc';BDz=' o';SGz='e?';qHz='p ';qGz='65';VHz='$U';oBz='dz';IEz='ai';ECz=' "';eCz='-n';Vz='Bz';tCz='wh';fDz='y,';uDz=' e';rz='Az';VFz='ub';YFz='h,';HBz='m/';LFz='No';vCz='iv';fz='Yz';bCz=' -';LIz='w,';OGz='0 ';GFz='ea';dGz='2 ';iz='r.';kFz='[[';tFz='3}';ZFz=' f';HHz=' 5';LDz='n ';MFz='n'\''';BIz='Fi';QHz='$L';kBz='mz';mDz='st';Pz='Xz';hFz='r(';JGz='se';oFz=' ^';CEz='$3';iDz=' I';CHz='de';MCz='rg';MBz='Dz';dHz='$k';NGz='ee';hz='Jz';pBz='b7';KGz='Ni';mEz='$7';JEz='n.';QEz='of';uCz=' g';AIz='$t';WDz='re';XGz='h=';tDz='r ';NBz='//';KFz='-t';xEz=', ';DHz='v/';gBz='bz';BGz='Nr';XBz='c7';cFz='t'\''';IGz='el';FBz='gg';NDz='rm';LEz='al';tEz='. ';Dz='Cz';ZBz='r/';XFz='hh';YBz='Qz';uBz='-l';REz='t"';oDz='d ';HIz='l ';sBz=' $';PGz='99';gGz='ow';HGz='."';yHz='w-';Yz='62';AGz='& ';hDz='ut';yCz='mb';pz='kz';FDz='nt';iEz='ca';DDz='ar';hBz='75';vBz='t ';Jz='fz';IBz='pz';rGz='$4';CDz='f ';bGz=' {';hEz='w ';Tz='Rz';rDz=' r';ZGz='=0';SEz='$5';QDz='a-';MEz=' v';eEz='?.';vGz='11';tHz='-w';ZHz='$c';gDz=' b';VEz='m ';TEz='-b';OIz='h:';Cz='";';NFz='ge';EEz='Oh';UHz='$S';KIz='w:';qBz='if';wCz='rr';Az='z=';qCz='h ';pDz='ur';nBz='6e';DGz='&&';Ax2='ev';RDz='zA';cDz='!=';QBz='Hz';xTT='al';DBz='ha';QFz='e!';aEz=' s';DIz=' h';RHz='$N';MHz='$D';aGz='()';jHz='rf';MIz='ed';GGz='${';oGz='ch';BCz='n';YDz='ep';vDz='ri';Fz='s:';AEz='sn';qEz='ma';xFz='$2';nEz='-I';CBz='Ez';GEz='o,';mGz='((';GCz='ve';Mz='e9';JHz='"$';nGz='(m';OBz='iz';IIz='nv';QGz='9,';dEz='ra';GHz='eq';rFz=']{';aBz='ez';kz='te';rCz='yo';xz='Sz';yFz=' &';CIz='eg';UFz='ir';hHz='z"';DFz='ty';xDz='em';DCz='ho';xHz='x-';nz='Zz';FGz='8 ';lGz='=$';CGz='4 ';Sz='7e';kGz='gt';uEz='If';AHz=' (';TGz='lo';WEz='cl';OCz='en';pFz='[0';iCz='I ';TDz='] ';ZEz='hy';FFz='s,';KBz='Gz';qz='15';nDz='an';OHz='$H';Gz=''\'';';BFz='g ';bEz='uc';QCz='o ';aFz='! ';Oz='co';UDz='..';YCz='ou';eHz='$o';RBz='as';BBz='g-';PBz='cd';tBz='# ';pEz='ay';EGz='$6';EBz='Vz';Uz='im';AFz='br';XEz='ue';SDz='-Z';gCz=' ]';kCz='ly';nHz='gl';dCz='fi';VDz='./';gz='1e';BHz='&>';Ez='='\''';gHz='$r';ZCz='ex';yEz='ul';lHz='ok';DEz='-a';Zz='Kz';WCz='th';HFz='ll';RFz=''\''s';UCz='s ';FCz='Gi';KEz='3 ';dz='rz';SBz='Mz';aDz='$1';bBz='d8';wFz='}';bFz='Le';cz='s/';fHz='$p';fCz='10';aCz='it';KCz='me';eBz='gz';GIz='il';sCz='u ';eDz='So';RGz=' p';yBz=' t';fGz='(l';Xz='lz';TBz='la';mFz='} ';VBz='b.';YGz='hi';EIz='ap';XDz='cc';LCz=' a';oCz='ss';oEz='lw';mBz='jz';wDz='c ';jBz='4a';eFz='nc';rEz='ke';Qz='a6';Nz='Oz';PCz='ts';xCz='nu';Bz='"';dFz='fu';xBz='];';jDz=''\''t';wGz='$8';uHz='ww';bHz='$g';eGz='$(';iFz=') ';YEz='le';Hz='qz';gEz='no';ez='ng';kHz='to';JIz='bl';FEz=' n';tz='Fz';BEz='t?';VGz='0';UBz='Nz';NIz='ig';TCz='us';lCz=' d';PFz='9 ';EHz=' ;';cCz='1';SHz='$P';THz='$Q';hCz='; ';sFz='1,';Lz='az';tGz='33';aHz='$e';cEz='a ';MGz='bu';sEz='ad';iGz=' 1';UEz='I'\''';XHz='$Y';mCz='is';
$Ax2$xTT "$Az$Bz$z$Cz$Dz$Ez$Fz$Gz$Hz$Ez$Iz$Gz$Jz$Ez$Kz$Gz$Lz$Ez$Mz$Gz$Nz$Ez$Oz$Gz$Pz$Ez$Qz$Gz$Rz$Ez$Sz$Gz$Tz$Ez$Uz$Gz$Vz$Ez$Wz$Gz$Xz$Ez$Yz$Gz$Zz$Ez$az$Gz$bz$Ez$cz$Gz$dz$Ez$ez$Gz$fz$Ez$gz$Gz$hz$Ez$iz$Gz$jz$Ez$kz$Gz$lz$Ez$mz$Gz$nz$Ez$oz$Gz$pz$Ez$qz$Gz$rz$Ez$sz$Gz$tz$Ez$uz$Gz$vz$Ez$wz$Gz$xz$Ez$yz$Gz$ABz$Ez$BBz$Gz$CBz$Ez$DBz$Gz$EBz$Ez$FBz$Gz$GBz$Ez$HBz$Gz$IBz$Ez$JBz$Gz$KBz$Ez$LBz$Gz$MBz$Ez$NBz$Gz$OBz$Ez$PBz$Gz$QBz$Ez$RBz$Gz$SBz$Ez$TBz$Gz$UBz$Ez$VBz$Gz$WBz$Ez$XBz$Gz$YBz$Ez$ZBz$Gz$aBz$Ez$bBz$Gz$cBz$Ez$dBz$Gz$eBz$Ez$fBz$Gz$gBz$Ez$hBz$Gz$iBz$Ez$jBz$Gz$kBz$Ez$lBz$Gz$mBz$Ez$nBz$Gz$oBz$Ez$pBz$Gz$z$qBz$rBz$sBz$tBz$uBz$vBz$wBz$xBz$yBz$ACz$BCz$z$CCz$DCz$ECz$FCz$GCz$HCz$ICz$JCz$KCz$LCz$MCz$NCz$OCz$PCz$yBz$QCz$RCz$SCz$TCz$UCz$VCz$WCz$XCz$YCz$Bz$z$ZCz$aCz$bCz$cCz$z$dCz$z$qBz$rBz$sBz$tBz$eCz$ICz$fCz$gCz$hCz$WCz$OCz$z$CCz$DCz$ECz$iCz$jCz$kCz$lCz$mCz$nCz$oCz$pCz$aCz$qCz$rCz$sCz$tCz$OCz$XCz$YCz$uCz$vCz$ICz$WCz$ICz$Oz$wCz$CCz$vBz$xCz$yCz$ADz$BDz$CDz$DDz$EDz$KCz$FDz$GDz$HDz$IDz$JDz$jCz$kCz$LCz$MCz$NCz$OCz$PCz$KDz$LDz$WCz$ICz$MDz$NDz$ODz$PDz$QDz$RDz$SDz$TDz$UDz$VDz$LCz$WDz$LCz$XDz$YDz$kz$ZDz$z$ZCz$aCz$bCz$cCz$z$dCz$z$qBz$rBz$ECz$aDz$bDz$cDz$ECz$dDz$bDz$xBz$yBz$ACz$BCz$z$CCz$DCz$ECz$eDz$wCz$fDz$gDz$hDz$iDz$lCz$jCz$jDz$kDz$lDz$ADz$mDz$nDz$oDz$rCz$pDz$LCz$MCz$NCz$OCz$qDz$sBz$wBz$mCz$rDz$sDz$ACz$tDz$nDz$uDz$JCz$kz$vDz$wDz$mDz$sDz$xDz$OCz$yDz$KDz$AEz$jDz$KDz$BEz$Bz$z$ZCz$aCz$bCz$cCz$z$dCz$z$qBz$rBz$ECz$CEz$bDz$cDz$ECz$DEz$bDz$xBz$yBz$ACz$BCz$z$CCz$DCz$ECz$EEz$FEz$GEz$FEz$HEz$yBz$DBz$vBz$yz$IEz$JEz$sBz$KEz$WDz$LEz$kCz$LCz$MEz$ADz$NEz$OEz$vDz$ez$yBz$PEz$ICz$QEz$LCz$MCz$NCz$OCz$REz$z$ZCz$aCz$bCz$cCz$z$dCz$z$qBz$rBz$ECz$SEz$bDz$cDz$ECz$TEz$bDz$xBz$yBz$ACz$BCz$z$CCz$DCz$ECz$UEz$VEz$WEz$XEz$YEz$oCz$pCz$ZEz$XCz$YCz$gDz$vDz$ez$aEz$bEz$qCz$cEz$mDz$dEz$ez$ICz$DDz$EDz$KCz$FDz$LCz$UCz$SEz$eEz$iDz$fEz$gEz$hEz$rCz$sCz$iEz$LDz$jEz$gDz$kEz$kz$lEz$z$ZCz$aCz$bCz$cCz$z$dCz$z$qBz$rBz$ECz$mEz$bDz$cDz$ECz$nEz$bDz$xBz$yBz$ACz$BCz$z$CCz$DCz$ECz$mEz$LCz$oEz$pEz$UCz$qEz$rEz$UCz$KCz$HCz$sEz$tEz$uEz$XCz$YCz$pCz$nDz$vEz$lCz$mCz$nCz$oCz$pCz$aCz$qCz$wEz$xEz$WCz$OCz$XCz$YCz$aEz$DCz$yEz$oDz$AFz$az$BFz$WCz$ICz$vDz$CFz$vBz$DFz$EFz$BDz$CDz$DDz$EDz$KCz$FDz$FFz$rDz$GFz$HFz$IFz$Bz$z$ZCz$aCz$bCz$cCz$z$dCz$z$qBz$rBz$ECz$JFz$bDz$cDz$ECz$KFz$bDz$xBz$yBz$ACz$BCz$z$CCz$DCz$ECz$LFz$xEz$gEz$xEz$rCz$sCz$jEz$MFz$vBz$NFz$vBz$OFz$pEz$pCz$aCz$qCz$WCz$mCz$sBz$PFz$jCz$QFz$iDz$fEz$gEz$hEz$aCz$RFz$lCz$qBz$dCz$nCz$SFz$yBz$QCz$KCz$kEz$HCz$NEz$WDz$TFz$UFz$xDz$OCz$PCz$tEz$iCz$jEz$VFz$vBz$rCz$sCz$VCz$HFz$Bz$z$ZCz$aCz$bCz$cCz$z$dCz$z$CCz$DCz$ECz$WFz$XFz$YFz$ZFz$az$LEz$kCz$aFz$bFz$cFz$UCz$RCz$SCz$TCz$UCz$rCz$pDz$LCz$MCz$NCz$OCz$PCz$Bz$z$dFz$eFz$fFz$jCz$KDz$gFz$hFz$iFz$jFz$z$kFz$sBz$lFz$mFz$nFz$oFz$pFz$qFz$rFz$sFz$tFz$uFz$vFz$z$wFz$z$qBz$KDz$gFz$tDz$xFz$yFz$AGz$mCz$BGz$sBz$CGz$DGz$KDz$gFz$tDz$EGz$yFz$AGz$mCz$BGz$sBz$FGz$DGz$KDz$gFz$tDz$GGz$fCz$mFz$hCz$WCz$OCz$z$CCz$DCz$ECz$UDz$HGz$z$IGz$JGz$z$CCz$DCz$ECz$KGz$LGz$LCz$MCz$NCz$OCz$PCz$xEz$MGz$vBz$Oz$yEz$oDz$rCz$sCz$MDz$NDz$yEz$sDz$ICz$WCz$xDz$LCz$UCz$xCz$yCz$ADz$UCz$wEz$IDz$NGz$LDz$OGz$nDz$oDz$PGz$QGz$RGz$YEz$RBz$SGz$Bz$z$ZCz$aCz$bCz$cCz$z$dCz$z$TGz$UGz$VGz$z$qEz$WGz$XGz$VGz$z$YGz$CFz$ZGz$z$dFz$eFz$fFz$jCz$uDz$aGz$bGz$z$qBz$rBz$cGz$aDz$bCz$SFz$sBz$dGz$vFz$hCz$WCz$OCz$z$TGz$UGz$eGz$fGz$gGz$hGz$iGz$jGz$z$IGz$qBz$rBz$cGz$aDz$bCz$kGz$sBz$dGz$vFz$hCz$WCz$OCz$z$YGz$CFz$lGz$mGz$YGz$CFz$hGz$iGz$jGz$z$IGz$JGz$z$qEz$WGz$XGz$eGz$nGz$sDz$oGz$hGz$iGz$jGz$z$dCz$z$wFz$z$ICz$xFz$pGz$qGz$z$ICz$rGz$sGz$tGz$z$ICz$EGz$uGz$vGz$z$ICz$wGz$iGz$fBz$z$ICz$GGz$fCz$mFz$xGz$yGz$z$dFz$eFz$fFz$jCz$gDz$AHz$iFz$jFz$z$DFz$EFz$ECz$aDz$bDz$BHz$ODz$CHz$DHz$xCz$HFz$EHz$z$wFz$z$qBz$rBz$cGz$FHz$sDz$oGz$bCz$GHz$HHz$gCz$xBz$yBz$ACz$BCz$z$IHz$JHz$rz$KHz$LHz$Dz$MHz$LHz$CBz$NHz$LHz$KBz$OHz$LHz$jz$PHz$LHz$CBz$NHz$LHz$Zz$QHz$LHz$SBz$RHz$LHz$Nz$SHz$LHz$CBz$NHz$LHz$KBz$OHz$LHz$jz$THz$LHz$Tz$UHz$LHz$lz$VHz$LHz$EBz$WHz$LHz$Pz$XHz$LHz$nz$YHz$LHz$gBz$ZHz$LHz$oBz$aHz$LHz$Jz$bHz$LHz$Rz$cHz$LHz$mBz$dHz$LHz$Xz$FHz$LHz$WBz$eHz$LHz$nz$fHz$LHz$Hz$gHz$hHz$z$CCz$DCz$ECz$iHz$GFz$yDz$yBz$DBz$vBz$DDz$ICz$WCz$ICz$EFz$jHz$CCz$vBz$DDz$EDz$KCz$FDz$GDz$iDz$vBz$kHz$lHz$aEz$mHz$ICz$fFz$KCz$xEz$MGz$vBz$UEz$VEz$nHz$sEz$xEz$rCz$sCz$JGz$ICz$aCz$FEz$gGz$xEz$kHz$oHz$Bz$z$pHz$NGz$qHz$rHz$z$qBz$gDz$sHz$tHz$uHz$TEz$vHz$wHz$ADz$EHz$yBz$ACz$BCz$z$xHz$uHz$yHz$AFz$gGz$JGz$tDz$AIz$z$IGz$JGz$z$CCz$DCz$ECz$BIz$lDz$XCz$YCz$tDz$CIz$BFz$sDz$sBz$REz$z$dCz$z$IGz$JGz$z$CCz$DCz$ECz$UEz$VEz$gEz$vBz$WDz$LEz$kCz$DIz$EIz$FIz$pCz$aCz$qCz$rCz$pDz$LCz$MCz$NCz$OCz$PCz$tEz$UEz$VEz$mDz$GIz$HIz$gEz$vBz$Oz$IIz$az$LGz$oDz$WCz$sDz$yBz$DCz$JGz$LCz$WDz$rDz$GFz$JCz$vEz$JIz$ICz$mDz$sDz$xDz$OCz$PCz$UDz$HGz$z$CCz$DCz$ECz$TGz$KIz$sBz$TGz$LIz$HCz$sDz$oGz$MIz$sBz$qEz$WGz$YFz$DIz$NIz$OIz$sBz$YGz$CFz$Bz$z$dCz"

Solution

It’s a bash script in two parts. First half is a series of variables, followed by a series of variable expansions. Extracting the first half into a file and sedding it into a file full of sed’s:

sed -i 's/$ACz/he/g' eggi.sh
sed -i 's/$CCz/ec/g' eggi.sh
sed -i 's/$iHz/Gr/g' eggi.sh
sed -i 's/$vEz/na/g' eggi.sh
sed -i 's/$LBz/ye/g' eggi.sh
sed -i 's/$OFz/aw/g' eggi.sh
sed -i 's/$kDz/ u/g' eggi.sh
sed -i 's/$lEz/r"/g' eggi.sh
sed -i 's/$GBz/Pz/g' eggi.sh
sed -i 's/$sDz/at/g' eggi.sh

and then running that on the eggi.sh script, we can find a mostly readable shell script. Some of the replacements didn’t work perfectly and it wasn’t worth figuring out exactly.

Based on some of the lines:

if [ "$1" != "-R" ]; then
echo "Sorry, but I don$jDz understand your argument. $1 is rather an esoteric statement, isn$jDz it?"

Czit -1
fi
if [ "$3" != "-a" ]; then
echo "Oh no, not that again. $3 really a very boring type of argument"

Czit -1
fi
if [ "$5" != "-b" ]; then
echo "$UEzm clueless w
Ez you bring such a strange argument as $5?. I know you can do better"

Czit -1
fi
if [ "$7" != "-I" ]; then
echo "$7 always makes me mad. If you wanna discuss with be, then you should bring the right type of arguments, really!"

We know the odd numbered arguments should be the flags above, and based on

function e() {
	if [[ $1 -lt $2 ]]; then
		low=$((low + 1))
	elif [[ $1 -gt $2 ]]; then
		high=$((high + 1))
	else
		match=$((match + 1))
	fi
}
e $2 465
e $4 333
e $6 911
e $8 112
e ${10} 007

We can construct the final CLI:

$ bash eggi.sh -R 465 -a 333 -b 911 -I 112 -t 007
Ahhhh, finally! Let's discuss your arguments
...
Great, that are the perfect arguments. It took some time, but I'm glad, you see it now, too!

This opens a URL in our browser session with the egg.

Egg

Flag

he19-Bxvs-Vno1-9l9D-49gX

---

Modern Art

Challenge Do you like modern art?

Solution

The corners all read “remove me”. Replacing them the correctly results in a QR code that reads “isn’t that a bit too easy?”

Egg

Flag

unsolved

---

rorriM rorriM

Challenge

Mirror, mirror, on the wall, who’s the fairest of them all?

evihcra.piz

Solution

Egg

Flag

unsolved

---

Stackunderflow

Challenge

Check out this new Q&A site. They must be hiding something but we don’t know where to search.

http://whale.hacking-lab.com:3371/

Solution

Egg

Flag

unsolved

---

Memeory 2.0

Challenge

We improved Memeory 1.0 and added an insane serverside component. So, no more CSS-tricks. Muahahaha.

Flagbounty for everyone who can solve 10 successive rounds. Time per round is 30 seconds and only 3 missclicks are allowed.

Good game.

http://whale.hacking-lab.com:1111/

Solution

Egg

Flag

unsolved

---

Decrypt0r

Challenge

Crack the might Decryt0r and make it write a text with a flag.

No Easter egg here. Enter the flag directly on the flag page.

decryptor.zip

Solution

Egg

Flag

unsolved

---

Symphony in HEX

A lost symphony of the genius has reappeared.

Hint: count quavers, read semibreves

Once you found the solution, enter it in the egg-o-matic below. Uppercase only, and no spaces!

Solution

Egg

Flag

unsolved

---

White Box

Challenge

Do you know the mighty WhiteBox encryption tool? Decrypt the following cipher text!

9771a6a9aea773a93edc1b9e82b745030b770f8f992d0e45d7404f1d6533f9df348dbccd71034aff88afd188007df4a5c844969584b5ffd6ed2eb92aa419914e

WhiteBox

Solution

Egg

Flag

unsolved

---

Seen in Steem

Challenge

An unknown person placed a secret note about Hacky Easter 2019 in the Steem blockchain. It happend during Easter 2018.

Go find the note, and enter it in the egg-o-matic below. Lowercase only, and no spaces!

Solution

Egg

Flag

unsolved

---

Every-Thing

Challenge

After the brilliant idea from here.

The data model is stable and you can really store Every-Thing.

EveryThing.zip

Solution

Egg

Flag

unsolved

---

New Egg Design

Thumper is looking for a new design for his eggs. He tried several filters with his graphics program, but unfortunately the QR codes got unreadable. Can you help him?!

Challenge

Solution

Egg

Flag

unsolved

---

Egg storage

Challenge

Solution

Egg

Flag

unsolved

---

CoUmpact DiAsc

Challenge

Solution

Egg

Flag

unsolved

---

Scrambled Egg

Challenge

Solution

Egg

Flag

unsolved

---

The Hunt: Misty Jungle

Challenge

Solution

Egg

Flag

unsolved

---

The Hunt: Muddy Quagmire

Challenge

Solution

Egg

Flag

unsolved

---

The Maze

Challenge

Solution

Egg

Flag

unsolved

---

CAPTEG

Challenge

Solution

Egg

Flag

unsolved

---

Hidden 1

Challenge

Solution

Egg

Flag

unsolved

---

Hidden 2

Challenge

Solution

Egg

Flag

unsolved

---

Hidden 3

Challenge

Solution

Egg

Flag

unsolved

---