Crypto


Fluffy's Adventure.

🔐 Crypto Module – The Ciphered Caverns 🦊🧮

In the cold, silent depths of the dojo, far beneath the noise of web traffic and shellcode, there’s a chamber lined with runes, riddles, and shifting symbols. Numbers echo here. Secrets slither in silence.

This is the Crypto Module—and Fluffy’s paws tremble with excitement every time he steps inside.

🧩 Uif Xpsme pg Djqifst

Dszqup jto(u kvtu nbui/
Ju(t mbohvbhf- xsbqqfe jo mphjd- gpshfe jo ijtupsz- boe hvbsefe cz bodjfou qspupdpmt/
Gspn Dbftbs(t tdspmmt up npefso STB upxfst- uijt npevmf ijeft usfbtvsft cfijoe mbzfst pg qvsf uipvhiu/

Gmvggz lopxt; fwfsz gmbh jo uijt qmbdf ibt cffo fodszqufe- fodpefe- ps dpodfbmfe cfijoe b xbmm pg usbotgpsnbujpot/
Boe if mjwft gps uif dibtf/

🦊 Hnwhh{)u Ekrjgtgf Eqpswguvu

Hnwhh{ qpeg urgpv c hwnn oqqpnkv pkijv uqnxkpi c ejcnngpig gpeqfgf kp tqv35. vjgp dcug54. vjgp ZQTgf cickpuv c nkpg htqo c rqgo0

Jg etcemgf kv0
Vjgp {cypgf. uvtgvejgf. cpf cumgf hqt oqtg0

Vq jko. c uvtkpi qh uvtcpig u{odqnu ku nguu c ycnn. oqtg c ygneqog ukip0

📓 Ioxii|*v Qrwhv +Vfudwfkhg lq wkh Pdujlqv,

%Fu|swr lv txlhw1 Lw grhvq*w vkrxw olnh d vkhoo1
Lw zklvshuv1 Vriwo|1 Uhshdwlqj lwvhoi1 Klglqj lq pdwk dqg phdqlqj1
Exw li |rx olvwhq forvh111 lw whoov |rx hyhu|wklqj1%

0 Ioxii| wkh Ir{/ fxuohg xs zlwk d kh{ gxps

🧠 Xlmro ]sy Ger Fvieo xli GshiC

Gv}txs mwr+x efsyx fvyxi jsvgi2
Mx+w efsyx mrwmklx0 gviexmzmx}0 erh texmirgi2

Xli gmtlivxi|xw {sr+x kmzi yt xlimv jpekw iewmp}2 Fyx rimxliv {mpp Jpyjj}2

Ger }sy syxjs| xli qexlC
Ger }sy liev {lex xli gmtlivw evi xv}mrk xs we}C

Xli Gv}txs Qshypi {emxw2
Fvmrk }syv {mxw2 Erh qe}fi e tirgmp2


Challenges

🐾 OTPwned: Operation Keysniff

"If I wanna see what's in the vault... I need the key. And maybe... just maybe... I already heard it once." — Fluffy

Fluffy’s on a mission. Not a mission of chaos—no, this is a mission of curiosity. Deep inside the digital landscape lies the Vault, guarded by a sleek encryption tool known only as FluffyCrypt™. Rumors say it’s protected by powerful OTP magic—something unbreakable… unless you're holding the right key.

Fluffy has a plan: if he can convince the system he’s an admin, he can ask the vault to encrypt any file he wants.

But there’s a problem: he doesn’t know the admin password...

...or does he?

🕳️ Flashback: Sticky Tar Pit

Back when Fluffy was sniffing around the auto-extracting FluffDrive, he thought he overheard a snippet—like someone murmured a password while uploading a suspicious .tar.gz file. He wasn’t sure then. But now? It all feels connected.

Could that password be the very one that unlocks FluffyCrypt’s admin mode?

“Open Sesame!” 🪄

Nothing happened...

Good luck, agent 47. The vault awaits. And Fluffy? He’s already digging at the door.

"Open Sesame!" he whispers... 🐾🔓

🍪 Hashi Munch

“I couldn’t eat the whole thing at once… so I’m gonna nibble it chunk by chunk.” — Fluffy 🐾

After a narrow escape from the OTPwn vault, Fluffy was left hungry for more. No flags. No secrets. Just… crumbs. Not literal crumbs, but digital ones. 💾

At the base of the vault, tucked beneath some broken bits of padding (and maybe a few lines of code), Fluffy found a mysterious file. It didn’t make sense — no readable text, no juicy secrets. Just long strings of weird, crunchy characters. 🧩

They didn’t smell like passwords, but they felt important. They were sharp, consistent, and oddly familiar — like something a cryptographer might chew on. 🔐

Fluffy gave it a sniff... and maybe a bite. 😋

He noticed something odd: The strings were all the same length — long and uniform, about 64 characters each. It reminded Fluffy of something he'd seen in login forms before... maybe something 256-bit in size? 🤔

But the real giveaway? The trail. Whoever was here last must’ve left in a hurry — scraps of the original message were left behind in perfect little 5-character bites, except for the very last one… which looked a bit smaller, maybe less than 5 nibbles left. 🍫

Fluffy squinted at the file, belly rumbling. 🦊

“This thing’s been chewed up good... but if I reverse-nibble each piece, I might just find the whole snack.” 🧠

Now it’s your turn. Can you help Fluffy digest the truth, one crunchy chunk at a time?


30-Day Scoreboard:

This scoreboard reflects solves for challenges in this module after the module launched in this dojo.

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