Project Sekai
🔒 UIUCTF 2023 / ✅-crypto-morphing-time
Sutx
BOT
06/30/2023 5:15 PM
Morphing Time - 500 points
Category:
Crypto
Description:
The all revealing Oracle may be revealing a little too much...
nc morphing.chal.uiuc.tf 1337
nc hostname 12345
Files:
https://2023.uiuc.tf/files/42f4fbc87e03bdb18109ab83f965d153/chal.py?token=eyJ1c2VyX2lkIjoxMTU5LCJ0ZWFtX2lkIjo2NTIsImZpbGVfaWQiOjUwMH0.ZJ9wLA.1yGK1Bo82J4JUxwb3UoVn2BEJck
Tags:
crypto
Sutx
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06/30/2023 5:15 PM
Sutx
BOT
06/30/2023 6:00 PM
@Utaha
wants to collaborate
18:03
@unpickled admin bot
wants to collaborate
unpickled admin bot
06/30/2023 6:06 PM
i think theres another cheese here
Utaha
06/30/2023 6:07 PM
idk too many ways to solve
18:07
go ahead and cheese it lol
unpickled admin bot
06/30/2023 6:08 PM
but title is something along morphism, so imma try finding that ig lol
Sutx
BOT
06/30/2023 6:22 PM
@kanon
wants to collaborate
18:22
✅ Well done, challenge solved!
unpickled admin bot
i think theres another cheese here
unpickled admin bot
06/30/2023 6:23 PM
was the idea sending c1^2 and c2^2, then taking the sqrt of the decryption
@kanon
?
kanon
06/30/2023 6:24 PM
yes
unpickled admin bot
06/30/2023 6:24 PM
ah
18:24
yay my cheese guess was right
18:24
but idk how that has to do with morphisms
Utaha
06/30/2023 6:25 PM
lol I was trying to send _c1 = pow(2, (p-1)//3, p), _c2 = 2
18:26
but yeah whatever works work
unpickled admin bot
06/30/2023 6:26 PM
utaha too big brain
18:26
but wheres the promised morphism world :<
Utaha
06/30/2023 6:26 PM
this batch of crypto is not interesting
unpickled admin bot
but wheres the promised morphism world :<
Utaha
06/30/2023 6:26 PM
idk lol
kanon
06/30/2023 6:26 PM
I did that first, but it was too hard to finish, so I switched to a different method
Utaha
06/30/2023 6:28 PM
lol yes that is cleaner
Exported 23 message(s)