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Rows:

CHALLENGEAUTHORS

SOLVES

(CURRENT)

SOLVE RATE

(AT CONTEST TIME)

Welcome
Misc

admin

1462

solves

-

Daily AlpacaHack

1356

solves

-

Daily AlpacaHack

774

solves

-

AlpacaHack Round 2 (Web)

588

solves

Top 28%

= 84/300 users

Daily AlpacaHack

529

solves

-

Daily AlpacaHack

507

solves

-

Daily AlpacaHack

455

solves

-

Daily AlpacaHack

352

solves

-

Daily AlpacaHack

347

solves

-

echo
Pwn

AlpacaHack Round 1 (Pwn)

345

solves

Top 32%

= 56/174 users

Daily AlpacaHack

311

solves

-

Daily AlpacaHack

307

solves

-

Daily AlpacaHack

304

solves

-

Daily AlpacaHack

295

solves

-

Daily AlpacaHack

292

solves

-

Daily AlpacaHack

289

solves

-

Daily AlpacaHack

287

solves

-

Encoding Basics
Misc
Crypto

Daily AlpacaHack

287

solves

-

108
Misc

Daily AlpacaHack

269

solves

-

AlpacaHack Round 7 (Web)

266

solves

Top 15%

= 71/458 users

Rows:

42*

SECCON CTF 13 ζ±Ίε‹θ¦³ζˆ¦CTF
15 solves
Crypto

Author:

ε‡ΊεŠ›γ‹γ‚‰γƒ•γƒ©γ‚°γ‚’εΎ©ε…ƒγ—γ¦γγ γ•γ„πŸ

import os
import random
from Crypto.Util.number import bytes_to_long

x = bytes_to_long(os.getenv("FLAG").encode())
for _ in range(42):
    x *= random.getrandbits(42)
print(x)

ε‡ΊεŠ›:

302825260919317779466638288706941757478119936504864503289299111810878557424069832851837952929397907929396668240458993245662741522591539210493306557224673507192171095532552008396687356525313836501117714017702880902013061423179550493813470620956236263763510927657899587551000326509836294794948423351121777067521675908878203343378571238778872260377769563951765315203164771192344115744888944635103673374760547507150197387248980588584664707496184797486345139870127142403853041203948936595396757260050089360185668376949219377211437731767603055237909466371770346897408000000000000000
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