RSA

Very Smooth - picoCTF 2022
vulnerability: factorisation with Pollard’s p-1 algorithm

Lorge - Imaginary CTF 2022
vulnerability: factorisation with Pollard’s p-1 algorithm, but largest prime factor of p-1 and q-1 is the same

One Step Closer - HTB Cyber Apocalypse CTF 2022
vulnerability: affine padding (allowing Franklin-Reiter attack)

DeLorean - HTB
vulnerability: gcd(e, phi) != 1

easyRSA - DASCTF 2022
vulnerability: non-prime e and gcd(e, p-1) = 1

baby RSA DICECTF 2022
vulnerability: e | (p-1) and e | (q-1)

Key Recovery - UMD CTF 2024
vulnerability: partial PEM private key

Key Recovery - San Diego CTF 2022
vulnerability: partial OpenSSH private key

PSYDUCK - squeamishossifrage
vulnerability: upper bits of p given

DELIBIRD - squeamishossifrage
vulnerability: common modulus attack

VULPIX - squeamishossifrage
vulnerability: low Hamming weight

LUDICOLO - squeamishossifrage
vulnerability: ROCA attack

Can’t Login - Incognito CTF 2022
vulnerability: common ssh-key password

Cookie Lover - HackIM CTF 2022
vulnerability: signature oracle

rsa_leak - ACTF 2022
vulnerability: LSB attack

Refactor - ASIS quals 2023
vulnerability: multiple of phi known

easy-rsa - pingCTF 2023
vulnerability: bit-by-bit bruteforce

pprintable - Fall GoN Open Qual CTF 2022
vulnerability: byte-by-byte bruteforce

Various Scattered Bits Challs
vulnerability: random known bits

L4ugh - 0xl4ughCTF 2024
vulnerability: common d

ReallyComplexProblems - SDCTF 2024
vulnerability: complex Coppersmith?!

BLAHAJ - angstrom CTF 2024
vulnerability: hint given

quick maffs - HTB
vulnerability: hint given

Sqursa_xx - hspace CTF 2024
vulnerability: strange prime structure

Prime Rotation - Compfest CTF 16 (2024)
vulnerability: strange prime structure

krsa - INTIGRITI CTF 2024
vulnerability: meet in the middle attack