Daily AlpacaHack: RBG Writeup
RBG authored by soon-haari RBG stands for RSA + SBG + LCG! To learn about them, please check out ...
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Daily AlpacaHack: a fact of CTF Writeup
a fact of CTF authored by xornet AlpacaHack で一番最初に完成したものの難易度調整により出題されなかった幻の問題 （運営コメント） import os ...
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SECCON14 quals: cbc-magic-word Upsolve
authored by kurenaif Lets' party started! please tell me magic word from Crypto.Util.Padding impo...
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AlpacaHack Round 12: RSARSARSARSARSARSA Upsolve
RSARSARSARSARSARSA authored by yu212 何度も言わないでもわかるよ…… from math import gcd import os from Crypto.U...
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SECCON14 quals: Last Flight Upsolve
Last Flight authored by kanon special thanks quocbao21_ I got split up from them. It is the final...
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SECCON 14 quals: yukari Writeup
yukari authored by chocorusk yukari zone♡ #!/usr/bin/env python3 from Crypto.PublicKey import RSA...
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Full Weak Engineer CTF 2025 Crypto/OSINT 作問者Writeup
書こうと思って先延ばししすぎました。 Full Weak Engineer CTF 2025 Writeupです。 私が作問したCryptoと場所の特定をしたGeoGuessrシリーズ(OSIN...
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Daily AlpacaHack([Mirror] TSG LIVE! CTF): RSA debug? Writeup
authored by jp3bgy, ~naan すみません！RSA暗号を実装したんですけどバグが取れなくて…ちょっと見てもらえませんか？ def my_pow(a, n, m): resul...
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AlpacaHack B-SIDE: HellCouple Writeup
HellCouple 脆弱なカップル！ import secrets import hashlib from Crypto.Cipher import AES import os FLAG = ...
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Daily AlpacaHack: ECRSA Writeup
ECRSA Elliptic Curve x RSA = ECRSA import os # secp521r1 patemeter p = 0x01ffffffffffffffffffffff...
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ICC Tokyo 2025: apia Upsolve
apia authored by elliptic-shiho & chocorusk the hunter home from the hill #!/usr/bin/env pyth...
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ICC Tokyo 2025: new-random Upsolve
new-random authored by chocorusk Can you guess from only one hint? import java.io.IOException; im...
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AlpacaHack Round 3 (Crypto): qrime Upsolve
qrime authored by xornet not crime and prime import os from Crypto.Util.number import bytes_to_lo...
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picoCTF2025: EVEN RSA CAN BE BROKEN??? Writeup
EVEN RSA CAN BE BROKEN??? authored by Michael Crotty This service provides you an encrypted flag....
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SECCON14 quals: Nostalgic Upsolve
Nostalgic authored by kanon On a rainy afternoon after school, a girl quietly gazed out the class...
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zer0pts CTF 2023: easy_factoring Upsolve
easy_factoring authored by mitsu The word "decomposition" has multiple meanings. Can you decompos...
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SECCON 14 quals: yukari infinity Writeup
内容の間違いがないように確認しながら作っていますが、専門外のためもし間違い等ありましたらコメント等で指摘していただけますと幸いです。 yukari infinity authored by ch...
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C言語のポインタを理解したい！#1
今授業でc言語のポインタを習っているのですが、ポインタの理解に苦しんでるクラスメイトが多かったのと僕の頭の整理のためにここにメモ程度のレベルでまとめていこうと思います。 僕も完全に理解したわけで...
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AlpacaHack Round 13: Jerry's flag checker Upsolve
Jerry's flag checker authored by soon-haari Jerry will verify your flag for you! import os from C...
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Daily AlpacaHack: super-tomato Writeup
super-tomato authored by kanon ぴんくいろ の ぼうしょく は とまと を もとめて いる... from Crypto.Util.number import * ...
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