Have you got stuck? Need Help? Join our discord server, ask your doubts & get support from our experts.
InCTF Jr 2022
August - November, 2022
Author: Abhishek Bharadwaj
Exploit
from Crypto.Util.number import *
from gmpy2 import *
e=65537
ct=328920994891201230204735386352373132785090803531433451362276859855186699531803077597728972887663535056099354665130585118080198411118628986216425443507980562992758286841886843016889365336508656679134294980909921597075734331387797771449164160970368606568918828375136238403010516892019211453991706963163761082515114226168622042693673362872147172795388177025691429361534744644448381996250787338504787103247402206377682824648406095208734022632993220632031505376275597
n= 847657506774740259571159340005827456759612896679643974042502206200407795837925629528754413413947914489373637821487174741656451382048054894685545583094481506562607820503241541272236495233895340336678617018086555389195804445883543216779719614555411438761451995727409247107778697045121123514446359047775247754280593793332213820069686225647568401341045732467377710437475011847782931652614097398669552176890666392907881538518529569627755493339908308001352852179871729
p=iroot(n,3)[0]
phi= (p-1)*(p**2)
d= inverse(e,phi)
print(long_to_bytes(pow(ct,d,n)))