Walkthrough and solution for the m challenge, recovering the hidden modulus by abusing multiplicative relations in a modular exponentiation oracle.

Walkthrough and solution for the Fake Weather challenge, exploiting a SHA-1 collision to bypass a file-content validation check.

Walkthrough and solution for the m0unt41n challenge 'otpam', covering a malicious PAM module with a hardcoded TOTP backdoor.

Walkthrough and solution for the m0unt41n challenge 'whiteboard', covering an unsigned integer overflow that allows access to a hidden note.

Writeup for HackTheBox Machine 'TwoMillion'

Writeup for HackTheBox Machine 'Caps'

Writeup for picoCTF 2022 'Keygenme' using Ghidra and GDB

Writeup for picoCTF 'Even RSA Can Be Broken' — exploitation of RSA weaknesses using ciphertext attacks and number-theoretic techniques.

Solutions and walkthroughs for OverTheWire Natas levels 16–20.

Solutions and walkthroughs for OverTheWire Natas levels 11–15, focusing on encryption, XOR, known-plaintext attack, and SQL injection.