TCP1P CTF 2024
Published:
Saya bermain dengan tim dimas fans club dan mendapatkan posisi pertama. Tim kami berhasil menyelesaikan 6 dari 7 soal crypto yang ada, dan berikut adalah writeup dari solusi yang kami kerjakan.
Posts by Tags
AES
IMC 2024
My IMC 2024 Solution
Published:
Some problems I solved at IMC 2024. My approaches sometimes differ from the official solutions, but the math still works out. You can find the official solutions for Day 1 and Day 2 at the following links:
PRNG
Cracking Python’s Random Module: Exploiting Linearity in the Mersenne Twister
Published:
Python’s random isn’t random enough. Solving linear equations to predict Mersenne Twister outputs with partial state knowledge by exploiting the linearity in the Mersenne Twister PRNG. The challenge is taken from Cyber Jawara 2024 Finals and actually consist of two different challenge. The solution to this challenge was inspired by this writeup.
RSA
TCP1P CTF 2024
Published:
Saya bermain dengan tim dimas fans club dan mendapatkan posisi pertama. Tim kami berhasil menyelesaikan 6 dari 7 soal crypto yang ada, dan berikut adalah writeup dari solusi yang kami kerjakan.
algebra
Quotient Polynomial Ring and Isomorphism
Published:
RSA in polynomial rings? Exploring quotient rings, isomorphisms, and CTF challenges that twist classic cryptography into algebraic structures. This post will solve some related challenge related with concept of polynomial ring and isomorphism.
discrete log
Quotient Polynomial Ring and Isomorphism
Published:
RSA in polynomial rings? Exploring quotient rings, isomorphisms, and CTF challenges that twist classic cryptography into algebraic structures. This post will solve some related challenge related with concept of polynomial ring and isomorphism.
isomorphism
Quotient Polynomial Ring and Isomorphism
Published:
RSA in polynomial rings? Exploring quotient rings, isomorphisms, and CTF challenges that twist classic cryptography into algebraic structures. This post will solve some related challenge related with concept of polynomial ring and isomorphism.
lattice based cryptography
CIMPA Research School on Arithmetic in Action: A Deep Dive into Lattice-Based Cryptography
Published:
This July 2025, I had the incredible opportunity to participate in the CIMPA Research School on “Arithmetic in Action: Number Theory and its Applications to Cryptography and Coding Theory” held at Universitas Gadjah Mada in Yogyakarta, Indonesia. As a cryptography enthusiast, this experience was amazing and really opened my mind to the deep mathematical foundations underlying modern cryptographic systems.
linear algebra
Cracking Python’s Random Module: Exploiting Linearity in the Mersenne Twister
Published:
Python’s random isn’t random enough. Solving linear equations to predict Mersenne Twister outputs with partial state knowledge by exploiting the linearity in the Mersenne Twister PRNG. The challenge is taken from Cyber Jawara 2024 Finals and actually consist of two different challenge. The solution to this challenge was inspired by this writeup.
linear transformation
Cracking Python’s Random Module: Exploiting Linearity in the Mersenne Twister
Published:
Python’s random isn’t random enough. Solving linear equations to predict Mersenne Twister outputs with partial state knowledge by exploiting the linearity in the Mersenne Twister PRNG. The challenge is taken from Cyber Jawara 2024 Finals and actually consist of two different challenge. The solution to this challenge was inspired by this writeup.
math
Quotient Polynomial Ring and Isomorphism
Published:
RSA in polynomial rings? Exploring quotient rings, isomorphisms, and CTF challenges that twist classic cryptography into algebraic structures. This post will solve some related challenge related with concept of polynomial ring and isomorphism.
math competition
My IMC 2024 Solution
Published:
Some problems I solved at IMC 2024. My approaches sometimes differ from the official solutions, but the math still works out. You can find the official solutions for Day 1 and Day 2 at the following links:
mersenne twister
Cracking Python’s Random Module: Exploiting Linearity in the Mersenne Twister
Published:
Python’s random isn’t random enough. Solving linear equations to predict Mersenne Twister outputs with partial state knowledge by exploiting the linearity in the Mersenne Twister PRNG. The challenge is taken from Cyber Jawara 2024 Finals and actually consist of two different challenge. The solution to this challenge was inspired by this writeup.
polynomial ring
Quotient Polynomial Ring and Isomorphism
Published:
RSA in polynomial rings? Exploring quotient rings, isomorphisms, and CTF challenges that twist classic cryptography into algebraic structures. This post will solve some related challenge related with concept of polynomial ring and isomorphism.
research school
CIMPA Research School on Arithmetic in Action: A Deep Dive into Lattice-Based Cryptography
Published:
This July 2025, I had the incredible opportunity to participate in the CIMPA Research School on “Arithmetic in Action: Number Theory and its Applications to Cryptography and Coding Theory” held at Universitas Gadjah Mada in Yogyakarta, Indonesia. As a cryptography enthusiast, this experience was amazing and really opened my mind to the deep mathematical foundations underlying modern cryptographic systems.
small roots
TCP1P CTF 2024
Published:
Saya bermain dengan tim dimas fans club dan mendapatkan posisi pertama. Tim kami berhasil menyelesaikan 6 dari 7 soal crypto yang ada, dan berikut adalah writeup dari solusi yang kami kerjakan.
solutions
My IMC 2024 Solution
Published:
Some problems I solved at IMC 2024. My approaches sometimes differ from the official solutions, but the math still works out. You can find the official solutions for Day 1 and Day 2 at the following links:
team selection
My IMC 2024 Solution
Published:
Some problems I solved at IMC 2024. My approaches sometimes differ from the official solutions, but the math still works out. You can find the official solutions for Day 1 and Day 2 at the following links:
writeup
TCP1P CTF 2024
Published:
Saya bermain dengan tim dimas fans club dan mendapatkan posisi pertama. Tim kami berhasil menyelesaikan 6 dari 7 soal crypto yang ada, dan berikut adalah writeup dari solusi yang kami kerjakan.