Phantasmagoria

As we see here we are given a forensic challenge with gif image file

How to Solve

first i understand it is a Puzzle i just need to get all the images inside gif file and merge the image to get the QR code so i found this website https://ezgif.com/split he give me the image sorted

how did i know the image was sorted and how i know there are 2 QR

if we take look of QR structure we will see there is 3 squares in the right&left of top and in left down

and then if we take look on the first part of image and the last part we will realize we have three squares

First Part:

Last Part:

now how i know we have 2 QR if any one foucs on the image they are duplicated but one with dark and white background and the second with rgb color

Merge images

After I download the image i extract from gif file I use this website https://products.aspose.app/imaging/image-merge to get the full QR code by adding 10 image at once on the order

And I do this operation twice one for Black&White QR and the second for colorized QR

As example after i merge the first 10 pices of colorized QR i got this

And so on you will continue to get all part of QR and Merge all part again

What will be inside the image

now the first QR code

i got rick roll haha it's prank i got the words of Rick Astley's song so the flag not here

but if we see the RGB image we will got n value the first thing i though it's an rsa and i got the N i should get the other C and E

Get C and E

if we go to any stegnography website and get the RGB image in red and blue color we will get the E And C https://www.aperisolve.com/ this is a awesome website btw

so now we have the public key rsa which (e,n) and the chiper text

i use online decoder rsa https://www.dcode.fr/rsa-cipher

n = 676791844642584980698053302310223785374313385409403045588113725155016812136880955271984417983873824026716210778280593193636428565069776587137028449750730272186542437844497237414456209835073368629304006715276260751133887794296529492487334855122615389995863721291118118732027231915027379993143595417642293787966513241655113162242886681266092600146489606133012439809001110360370456177919007156990233918640321509862398958571381198232567856064240532200641725144788895054486316049075570223352817949029389327640788515067890854211670242990506500384161300646686642943025006620039197262649011645414593036304976338145694104210102443351633126298836188101611468727285524121350542326419652662876739876424845347479917953656717595927494531015461852178181228442298434483771040709741405863344788052581819778178386583342583162229291454214612057110480344851213811069677642675472810388144418347604660534845766311357971367827288922569847511151214222283088837375795803519692209817560935544948763568461379169948048755718648569869223176458921320498263580169173526435342144022663119655800743047260437276330638259847190731172746917271144508137645140847075476659515891899224768333964574305422773267597098695989323996565887847836862251898531683849611661559455231

e = 580107295407929983455474259123048958892268616065202610504097478704300124688755104518843786843320420594328180667097651308831224484345522788974595814072054519017036375295283346355248179858634315967974862898808223500971903823682739564989144161533670334282168903963815530341737627355737754279837367500836251818257011349990096996208188583942365085839848233828296376979143808880317533866787720420277343358834561294167770535918326741342201019483634741886264335838390481475273985184921917334302415384882333709406390155772477875038574493991862714614995400554302836808307148531462169082270581410355365459689979718410594946465757345418167500441759086471705367181923686763503684027485517203432506707344347783693800292516556903295589747181683464968271679813556995850747615373120820875968987307345135528514167832232730587801941826874478866266248104183762332450746296192019414713597801306568432969966780462547060873090168456225293338399628593451782650498742449891396155749182822135489206945557245425857310335962454516172608455034226164240182895467945937699668831887344790952929260964764874686656180773292544947330844662364326840643409486240155063338637903846556007310024878543296033058049856666554133648498640712529858440916870291185920494704803143

c = 544342977532404237408772156018844280042896018581454027178213021966933179442845437798554673545620437077690160719361782366496084247799878518975715150796511397840519300211970113174385006721394626735058682356052519383771627256690815712967712491626102749570315765793607724436304925195447530638210491706318962714162678496224311664384796373433133484652485030434903014477989234639514499007880766266336487828650563294477369869284464009446027489791555956252580321314582911124874488376100440106092810747363952104507525352045668294528122872841750097177464905666071617876996930044144939116978812626955932102034257961709955290700427646253669485222926458797085660621146417897771007300680609504190057013973071878997514930801531407454022185046675516302040705165530852907708234116394362314177321060017882453944778571652891878787594756953941882037855500075620246192415211529447574738034705454952785438018144229155984327393211236378437222298093295385097467084627926991924915499333729453319553497885055095056469836597798913831551134953389760004832277777103218600963483821015591765052538315472933051886240356519093653467540608074668757871161552736235872811563026735761624551483971176815836236188425184614789972749058974348218017069740385931961400851689995

so the flag will be nite{71m3_70_fr4m3_7h15_c0l0urful_e_n_c_0d3d_qr}

Thank you for Reading