Scripts with short explanations: BabyPinhole (crypto 163) Liar’s Trap (crypto/ppc 281) Palindrome Pairs – Challenge Phase (ppc 63+337)
Tag: TWCTF
Sep 05
Tokyo Westerns/MMA CTF 2016 – Backdoored Crypto System (Reverse+Crypto 400)
Get the flag. bcs.7z $ nc bcs.chal.ctf.westerns.tokyo 3971 Summary: recovering AES key from partial subkey leaks.
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.