https://x3ric.com/blog/tags/rsa/CTF notes, systems work, and writeups.Hugoen-usSat, 06 Jun 2026 21:41:13 +0200https://x3ric.com/blog/posts/HackTheBox-400Curves-Challenge/https://x3ric.com/blog/posts/HackTheBox-400Curves-Challenge/Mon, 05 May 2025 09:20:00 +0800challengehtbcryptorsalatticeecc400Curves: turn the RSA leak into a lattice recovery, rebuild the secret values, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-Down-the-Rabinhole-Challenge/https://x3ric.com/blog/posts/HackTheBox-Down-the-Rabinhole-Challenge/Sun, 16 Feb 2025 00:20:00 +0800challengehtbcryptorsaDown the Rabinhole: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-Spooky-RSA-Challenge/https://x3ric.com/blog/posts/HackTheBox-Spooky-RSA-Challenge/Sun, 16 Feb 2025 00:20:00 +0800challengehtbcryptorsaSpooky RSA: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-One-Step-Closer-Challenge/https://x3ric.com/blog/posts/HackTheBox-One-Step-Closer-Challenge/Fri, 31 Jan 2025 09:20:00 +0800challengehtbcryptorsaOne Step Closer: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-Partial-Tenacity-Challenge/https://x3ric.com/blog/posts/HackTheBox-Partial-Tenacity-Challenge/Fri, 31 Jan 2025 09:20:00 +0800challengehtbcryptorsaPartial Tenacity: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-Permuted-Challenge/https://x3ric.com/blog/posts/HackTheBox-Permuted-Challenge/Fri, 31 Jan 2025 09:20:00 +0800challengehtbcryptorsaaeshashPermuted: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-Weak-RSA-Challenge/https://x3ric.com/blog/posts/HackTheBox-Weak-RSA-Challenge/Fri, 31 Jan 2025 09:20:00 +0800challengehtbcryptorsaWeak RSA: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-Inside-the-Matrix-Challenge/https://x3ric.com/blog/posts/HackTheBox-Inside-the-Matrix-Challenge/Thu, 23 Jan 2025 09:20:00 +0800challengehtbcryptorsalatticeInside the Matrix: turn the RSA leak into a lattice recovery, rebuild the secret values, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-Lost-Modulus-Challenge/https://x3ric.com/blog/posts/HackTheBox-Lost-Modulus-Challenge/Thu, 23 Jan 2025 09:20:00 +0800challengehtbcryptorsaLost Modulus: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-MSS-Challenge/https://x3ric.com/blog/posts/HackTheBox-MSS-Challenge/Thu, 23 Jan 2025 09:20:00 +0800challengehtbcryptorsaaeshashMSS: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-Bank-er-smith-Challenge/https://x3ric.com/blog/posts/HackTheBox-Bank-er-smith-Challenge/Wed, 22 Jan 2025 09:20:00 +0800challengehtbcryptorsahashBank-er-smith: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-BBGun06-Challenge/https://x3ric.com/blog/posts/HackTheBox-BBGun06-Challenge/Wed, 22 Jan 2025 09:20:00 +0800challengehtbcryptorsaBBGun06: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-Brainys-Chyper-Challenge/https://x3ric.com/blog/posts/HackTheBox-Brainys-Chyper-Challenge/Wed, 22 Jan 2025 09:20:00 +0800challengehtbcryptorsaBrainy's Chyper: exploit the RSA structure, recover the missing secret, and decrypt the flag.https://x3ric.com/blog/posts/HackTheBox-Baby-Time-Capsule-Challenge/https://x3ric.com/blog/posts/HackTheBox-Baby-Time-Capsule-Challenge/Fri, 13 Dec 2024 09:20:00 +0800challengehtbcryptorsaEnter the challenge flag to unlock this writeup.https://x3ric.com/blog/posts/HackTheBox-Birds-of-randomness-Challenge/https://x3ric.com/blog/posts/HackTheBox-Birds-of-randomness-Challenge/Fri, 13 Dec 2024 09:20:00 +0800challengehtbcryptorsaprnglatticeeccEnter the challenge flag to unlock this writeup.https://x3ric.com/blog/posts/HackTheBox-Lost-Modulus-Again-Challenge/https://x3ric.com/blog/posts/HackTheBox-Lost-Modulus-Again-Challenge/Fri, 13 Dec 2024 09:20:00 +0800challengehtbcryptorsalatticeEnter the challenge flag to unlock this writeup.https://x3ric.com/blog/posts/HackTheBox-LostKey-Challenge/https://x3ric.com/blog/posts/HackTheBox-LostKey-Challenge/Fri, 13 Dec 2024 09:20:00 +0800challengehtbcryptorsaaeslatticeecchashEnter the challenge flag to unlock this writeup.https://x3ric.com/blog/posts/HackTheBox-Quantum-Safe-Challenge/https://x3ric.com/blog/posts/HackTheBox-Quantum-Safe-Challenge/Fri, 13 Dec 2024 09:20:00 +0800challengehtbcryptorsaEnter the challenge flag to unlock this writeup.https://x3ric.com/blog/posts/HackTheBox-ReMeeting-the-Wheel-Challenge/https://x3ric.com/blog/posts/HackTheBox-ReMeeting-the-Wheel-Challenge/Fri, 13 Dec 2024 09:20:00 +0800challengehtbcryptorsaaeshashEnter the challenge flag to unlock this writeup.https://x3ric.com/blog/posts/HackTheBox-RSAisEasy-Challenge/https://x3ric.com/blog/posts/HackTheBox-RSAisEasy-Challenge/Fri, 13 Dec 2024 09:20:00 +0800challengehtbcryptorsaEnter the challenge flag to unlock this writeup.https://x3ric.com/blog/posts/HackTheBox-YALM-Challenge/https://x3ric.com/blog/posts/HackTheBox-YALM-Challenge/Thu, 12 Dec 2024 09:20:00 +0800challengehtbcryptorsalatticeEnter the challenge flag to unlock this writeup.https://x3ric.com/blog/posts/HackTheBox-Brevi-Moduli-Challenge/https://x3ric.com/blog/posts/HackTheBox-Brevi-Moduli-Challenge/Sat, 16 Nov 2024 09:20:00 +0800challengehtbcryptorsalatticeBrevi Moduli: turn the RSA leak into a lattice recovery, rebuild the secret values, and decrypt the flag.