#crypto

De1 CTF 2020 - ECDH

Posted on May 2, 2020

Invalid curve attack on elliptic curve. [Read More]

#ctf #de1 #crypto #ecc

SuSeC CTF 2020 - Gantun

Posted on March 16, 2020

Break a homemade cryptosystem. [Read More]

#crypto #ctf #susec

UTCTF 2020 - Crypto Challenges

Posted on March 9, 2020

Galois, Curveball. [Read More]

#crypto #ctf #ut #aes

Advent OTW 2019 - Naughty Or Nice v2

Posted on December 27, 2019

“Break” rsa pkcs1 padding and execute shellcode. [Read More]

#crypto #pwn #ctf #advent #rsa

Advent OTW 2019 - Santa's Signature

Posted on December 26, 2019

Break textbook RSA signature. [Read More]

#crypto #ctf #advent

RITSEC CTF 2019 - Random

Posted on November 18, 2019

Exploit the rand() function in C. [Read More]

#crypto #ctf #ritsec

CSAW Quals 2019 - Byte Me

Posted on September 16, 2019

ECB Byte at a time attack. [Read More]

#ctf #csaw-quals #crypto #aes

HackCon CTF 2019 - AgainAndAgainAndAgain

Posted on August 24, 2019

Repetitive Rabin cryptosystem. [Read More]

#crypto #ctf #hackcon #rabin

HackCon CTF 2019 - OTP

Posted on August 24, 2019

Two time pad. [Read More]

#ctf #hackcon #crypto

Redpwn 2019 - Super Hash

Posted on August 16, 2019

Sequencial hashing, with @edoz90. [Read More]

#ctf #crypto #redpwn