Make bad politicians resign! nc 78.46.224.72 2048 files Summary: factorization-based attack on a signature method
Tag: libnum
Sep 05
Tokyo Westerns/MMA CTF 2016 – Pinhole Attack (Crypto 500)
Decrypt the cipher text with a pinhole. $ nc cry1.chal.ctf.westerns.tokyo 23464 pinhole.7z Summary: attacking RSA using decryption oracle leaking 2 consecutive bits in the middle.
Mar 14
0CTF 2016 Quals – Equation (Crypto 2 pts)
Here is a RSA private key with its upper part masked. Can your recover the private key and decrypt the file? equation.zip Summary: recovering RSA key from part of the private key.
Jun 02
PHD CTF 2013 Hackskell (500)
We’ve got a screenshot of some encryption, here’s the text transcribed. Please say what’s there. Summary: a couple of modular equations
Apr 22
PlaidCTF 2013 Blech (Crypto 200)
You get arbitrary code execution…. as long as it’s code we approve of. Source available at blech.py Service running on 54.234.73.81 port 1234 blech.py Summary: RSA cube root attack