Google ctf writeup open ensures that the cookies are accessible to the Google CTF bot. d8 allows you to upload and run a piece of v8 code cache. ctftime can't render the emojis note this writeup only describes the first part of the challenge, for the code with We would like to show you a description here but the site won’t allow us. The verification, then, consists of raising the signature to the power of the public exponent e modulo N, basically reversing it Jun 23, 2024 · 12:30 Jun 27 2025 Unicornel has been updated, please download the attachment again. Aug 19, 2020 · Google CTF Google CTF 2021: Writeup Competition winners Hello, the following write-ups have been selected as winners of the Google CTF 2021 write-up 8/30/21 Google CTF Jul 6, 2024 · With some help, I discovered that you cannot use iframes to leak cookies; instead, you need to use window. Aug 24, 2020 · We had a really great time this weekend playing this year’s edition of Google CTF. Jul 4, 2025 · Writeup and solution for the Google CTF 2025 Multiarch-1 reverse engineering challenge. I was still relatively new to CTFs (it had been nearly 5 months since I started) and I Jul 1, 2025 · Google CTF 2025 Writeup for Google CTF 2025 by Chovid99 Jul 01, 2025· 37 minutes Writeup, Google CTF, Pwn, Unicorn, 2025 Nov 2, 2022 · This is a write-up about how I solved the second episode of the H4CK1NG GOOGL3 security CTF. It's Google CTF time! 04:00 Jun 23 2025 Dust off your hacking tools and prep your coffee pots, because the competition is about to get real! Get ready to unleash your inner keyboard warrior as we dive into a 48-hour hacking frenzy starting June 27th at 6:00 PM UTC. It was called Trapdoor and at least I thought about using advanced mathematics to solve it. In this article I introduce writeups for three crypto challenges I solved. Updates about the CryptoHack platform, cryptography news, and CTF writeups. 17. Jul 25, 2025 · After the CTF, with a bit more time, I attempted to solve it, and here’s a writeup. The process runs continuously: One additional thought which I think is severely underrated when discussing creating a write-up, is don’t be afraid to mention any rabbit holes/wrong directions you went. It can convert message from and to some encodings: plain, hex, or ascii 85. a The Council of Sheep và đạt được thứ hạng #28 Đây sẽ là writeup của mình về những bài đã giải được (3 bài đầu) và cả những bài mình ngồi giải lại sau giải (2 bài sau), hi vọng nó sẽ giúp ích cho các bạn. Analyzing the Web Jun 23, 2025 · Google CTF Beginner’s Quest WEB MESSAGE Who remembers PHP? The password_hash () function is so convenient, no one can guess my password 🧂 Tasty hashes! 🧂 This is too little salt! These are my solutions for Google CTF 2022 This is my first official CTF (Capture The Flag) that will be held by a big company like Google so I hope you will enjoy my writeups. CTF Writeup – MISC: Mafia at the End of the Block 1 - L1NUXexe/PwnMe-2025-CTF-2600 A write-up for Google CTF 2019 Qualification Round Challenge: REALITY Category: Cryptography By: NDH Mar 26, 2025 · Official writeups for Cyber Apocalypse CTF 2025: Tales from Eldoria - hackthebox/cyber-apocalypse-2025 Dec 6, 2023 · The first was the v8box write-up from Google CTF 2023. Jun 30, 2025 · I wrote two challenges for Google CTF qualifier - Underhanded and Merkurated. This challenge is not a classical pwn In order to solve it will take skills of your own An excellent primitive you get for free Choose an address and I will write what I see But the author is cursed Jun 23, 2024 · 12:30 Jun 27 2025 Unicornel has been updated, please download the attachment again. Challenge file can be found here: js_safe_6. 2024 hxp 38C3 CTF CTF scripts and writeups (mostly challenge + . Hopefully other CTF events can do the same. It wasn't particularly useful to me at the moment, though it was something to investigate later Jul 18, 2023 · CTF writeups, oldschoolGoogle CTF 2022 presented us with oldschool, a typical, as the name suggests, oldschool crackme with an ncurses terminal interface. Underhanded Challenge Summary Proudly sharing our Python implementation of AES. GitHub Gist: instantly share code, notes, and snippets. 2025 BSides NYC Forensics Magnet Virtual Summit Android Android Takeout Jun 23, 2024 · 12:30 Jun 27 2025 Unicornel has been updated, please download the attachment again. The CTF took place on August 27-29 2021 and consisted of 18 challenges ranging in type from coding, reversing, web exploitation, pwn, data parsing, steganography, and more. js file. Jun 25, 2023 · 25 June 2023 Writeup Google CTF: write-flag-where by Francesco #write-flag-where [Google CTF 2023] Description: This challenge is not a classical pwn In order to solve it will take skills of your own An excellent primitive you get for free Choose an address and I will write what I see But the author is cursed or perhaps it’s just out of spite For the flag that you seek is the thing you will Mar 9, 2025 · The Challenge This challenge involved a bot periodically sending an HTML file containing the flag to a gotenberg instance, which converts it to a PDF. Jun 26, 2023 · This year's Google CTF, while traveling in Danang, I managed to solve 2 misc problems: npc and symatrix. They are all inspired from the real-life – either from security reviews or the bugs I came across while developing web apps. [Pwn 215pt] KNIFE We're given an x86-64 ELF program. # Google CTF 2023 — Under-Construction Writeup When you start any challenge at the Google CTF 2023, the first things you will usually look at are the challenge description, attachments and in case of a web challenge the web pages. I don’t describe how I reversed the challenge binary files, you could check the IDA database if you want to know what did I do to reverse the binary files. Initially, I wasn’t planning on even participating in the 2021 Google CTF event because it had a rating weight of 99. CTF writeups, beginnerBEGINNER easy Dust off the cobwebs, let's reverse! Files provided: a. 3. Jul 4, 2022 · Congratulations to the winners of the Google CTF 2022 write-up competition. withgoogle. k. By the way, we sneakily hid a backdoor. This has 2 field b= - First is encrypt signature, second is base64 of the flag. out Flag: AAAAAAAAAAA FAILURE Let's analyze a. I only solved 1 web challenge but learnt a lot of things for other categories. Follow Archive Bug Bounty Write-up Submissions IW Ambassadors Weekly News Letter Awesome Write-ups straight to your inbox Jun 25, 2023 · 25 June 2023 Writeup Google CTF: write-flag-where by Francesco #write-flag-where [Google CTF 2023] Description: This challenge is not a classical pwn In order to solve it will take skills of your own An excellent primitive you get for free Choose an address and I will write what I see But the author is cursed or perhaps it’s just out of spite For the flag that you seek is the thing you will Mar 9, 2025 · The Challenge This challenge involved a bot periodically sending an HTML file containing the flag to a gotenberg instance, which converts it to a PDF. 22 on CTFtime which speaks volumes about its immensive difficulty. py solving script) Oct 28, 2022 · Yesterday, I found out about the H4CK1NG GOOGL3 security CTF on Hackernews. Collection of scripts and writeups. Challen Jul 1, 2025 · During Google CTF this year, my schedule was pretty tight, so I couldn’t contribute much to my team Blue Water. Jul 27, 2022 · This year I made the pwn challenge "d8" in Google CTF 2022. GLHF! メガ update 07:10 Jun Jul 9, 2024 · I played this year's Google CTF in kijitora. Another year, another JS Safe challenge! I’m always looking forward to this challenge during Google CTF. Jun 28, 2025 · Write-up for GoogleCTF 2025 Posted Jun 28, 2025 Updated Jul 6, 2025 By Dang Minh Tu 32 min read Google CTF 2025 Contents Google CTF 2025 Jun 29, 2025 · 12:30 Jun 27 2025 Unicornel has been updated, please download the attachment again. He even provided me the paper to refer, my only contribution to the challenge is to optimize the original solution so that we don’t need 65K-ish oracle calls. com🔗 Lin Jul 18, 2022 · Google CTF 2022 Writeup - Enigma Hi, and welcome to this writeup for the crypto Enigma challenge. Feb 10, 2023 · Category: writeups May 7, 2025 RealworldCTF 2024 – Protected-by-Java-SE – Writeup Jun 1, 2024 GPNCTF: Trapdoor author writeup For the GPNCTF I wrote a crypto challenge. The goal is crafting the code cache to achieve arbitrary code execution. Jul 18, 2022 · Google CTF 2022 – LOG4J2 – Writeup TLDR: Side-channel-based timing attack via “format string” injection. txt and rand2 … Nov 5, 2022 · This is a write-up about how I solved the third episode of the H4CK1NG GOOGL3 security CTF. 12:30 Jun 27 2025 Unicornel has been updated, please download the attachment again. 15s ; 0x200b Mar 30, 2025 · CTF Writeup: Google CTF 2020 "What Lurks Below". If you didn't read my post about the first episode, I highly recommend you to check it out, since it introduces the concept of a CTF. Sep 22, 2021 · A writeup for challenge 1 of the beginners quests of the Google CTF. It basically parses the user input in bash Abstract Syntax Tree (AST), and This repository contains my writeups for all the challenges in the Google CTF 2021 Beginners Quest. This repository lists most of the challenges used in the Google CTF since 2017, as well as most of the infrastructure that can be used to run them. If you didn't read my post about the first episode, I highly recommend you to read it, since it contained one of the most fun challenges of this CTF. When you start any challenge at the Google CTF 2023, the first things you will usually look at are the challenge description, attachments and in case of a web challenge the web pages. SAPPY Jul 18, 2022 · Google CTF 2022 Pwnable d8 Writeup. At the end of the CTF, it had 9 solves and awarded 373 points. misc - onlyecho This challenge implements bash jail in Please send us feedback, thanks! https://forms. Most of them are android based due to the popularity of the platform. html. Jun 24, 2024 · We need to find a way to bypass this restriction and execute arbitrary command. Oct 13, 2018 · [GoogleCTF 2019] — Web: BNV — Writeup Writeup for GoogleCTF 2019 by Nicholas. Each writeup provides a step-by-step guide on how I approached and solved the challenge, including code snippets, tools used, and lessons learned. out: ELF64 file In this program we have to enter the correct flag: $ . As the bash-parser module is pretty old (last released Jun 2017), I thought there might be some inconsistency between actual bash syntax and the bash-parser syntax. This CTF proved to be the ultimate test of skill, pushing me… Write-Ups of the Google CTF 2022. Google runs a CTF competition in two rounds: an online qualification round and an onsite final round. Even if I did participate, I was too lazy to write a writeup, so my last writeup was back in March. lea rdi, str. Sep 28, 2021 · A writeup for challenge 8 of the beginners quests of the Google CTF. In this repository, you'll find writeups for a variety of CTF challenges. The Flare-On Challenge is a reverse engineering contest held every year by the FLARE team, and this marks its eleventh year running. Google CTF is competition for more senior players, which I doubt I could ever be one of them. It's been quite a while since I played CTF for the last time and I had great fun! See the folder structure for the challenges you're interested in. If you want to preview the code in your browser, I uploaded it as a GitHub Gist. The official and detailed writeup is available here, which goes through the intended solution of Jul 21, 2021 · Himanshu Sheoran deut-erium deuterium cryptography Capture The Flag CTF hacking cybersecurity SAT SMT solvers and computer science Google CTF - Wiki Writeup I began my Google CTF experience with this challenge which was categorized as a medium difficulty pwn task, but I have found it significantly easier than the inst-prof challenge which I solved later during the CTF. 👨💻 SPONSORED BY INTIGRITI – intigriti. Sep 28, 2021 · A writeup for challenge 6 of the beginners quests of the Google CTF. May 1, 2024 · Here’s the rundown of the challenges I tackled in the AirOverFlow CTF 2024. At this point, a ROP chain could be used to pwn the process. Jun 24, 2018 · CTF Writeup / GoogleCTF 2018 / Perfect Secrecy Done as a member of the duks team. out with radare2: Now, try to understand what does main do. CTF Writeup Repository. Although we were able to solve only 2 of the pwn challenges , here’s the intended writeup for the challenge WriteOnly. Google CTF 2020 Here are my writeups and solutions for this year's Google CTF. Mar 29, 2024 KalmarCTF 2024: Symmetry writeup Mar 29, 2024 Google Capture The Flag 2023: oldschool and UBF writeup Mar 3, 2024 Oct 2, 2020 · Congratulations, one or more of your write-up submissions to the Google CTF Writeup contest has won! Jul 8, 2022 · Write-Up: Web - Log4j & Log4j2 from Google CTF 2022 This blog post explains three ways to exploit Log4j 2. 2 from Google CTF 2022: Level 1: Trigger an exception in Log4j that contains the flag Level 2: Guessing the flag with the help of RegEx conversion patterns Bonus: Guessing the flag with a time-based side channel using ReDoS The Beginner's Quest is a short jeopardy style CTF competition based on the annual Google CTF event. My personal goal was to get at least one … Welcome to the CTF Archives 2025 repository! This repository serves as a centralized collection of solutions, write-ups, and resources from various Capture The Flag (CTF) competitions held throughout the year 2025. My team (PolyHx) was the 4th to crack it. Jun 28, 2023 · I had a good weekend playing GoogleCTF 2023 with The Council of Sheep aliased as nopnop (CTFTime please help us change our name back…), we are placed top 32nd and I solved 5 pwnable challenges, but for this writeup I will write about the challenges that I think are the most interesting challenges. I saw this in the console. This is because cookies, by default, have SameSite=Lax, which makes them unavailable in iframes. Happy hacking! Register Team Join Team →Scoreboard0 Mode Jun 29, 2025 · Surprisingly, I also wrote three series of web challenges this year: Custom Web Server, Mystiz’s Mini CTF and ⚡. Jul 17, 2022 · This is the write-up for Treebox, one of the easier Sandbox Escape challenges from Google CTF 2022. Jun 26, 2024 · Earn money for your writing Listen to audio narrations Read offline with the Medium app Ctf Writeup Jun 24, 2024 · Lysithea Trying to Writeup in English for the first time. It draws thousands of players from around the world every year, and is the foremost single-player CTF-style challenge for current and aspiring reverse engineers. co/ctf This event's future weight is subject of public voting! Google CTF. html Jun 28, 2024 · For the past half year, I have been busy with other things and haven’t had a chance to participate in a CTF. There were 17 and 37 solves during the contest time. Home / CTF events / Google Capture The Flag 2024 / Tasks / DESFUNCTIONAL / Writeup Sep 13, 2024 · When it's pumpkin spice season, that means it's also Flare-On Challenge season. My personal goal was to get at least one … Jun 29, 2025 · Surprisingly, I also wrote three series of web challenges this year: Custom Web Server, Mystiz’s Mini CTF and ⚡. eml This is an email forensics, to open . Register Team Join Team →Scoreboard0 Mode As it always have been with my challenges for Google CTF, they are based Jun 23, 2024 · 12:30 Jun 27 2025 Unicornel has been updated, please download the attachment again. It's been a while for me to participate in another CTF game (on my own, again). 2 and a (Python) Flask-based web application that interfaces with the chatbot via command line. Of course, the first thing I did was to open the browser devtools. It was hard deciding the finalists, so join us in congratulating them on the results of their hard earned efforts. Apr 4, 2020 · Google CTF: Beginners Quest I’ll skip the talk for now. The program has 10 slot of caches. The task description reads: A game I found in a developer’s drawer, it looks like an unfinished game about a character jumping rocks? and we are given an attachment that contains the following files. The Beginner's Quest is a short jeopardy style CTF competition based on the annual Google CTF event. js 來看看他怎檔的。 Jul 5, 2025 · GoogleCTF 2025 - writeup Author: 堇姬 Naup Pwnmulti-arch 2一題 VM pwn第一題是 Reverse 第二題是 pwn這份 writeup 只有寫 pwn analyze IDA沒有 debug symbol，所以要修這台 VM 自定義了一個 masm 的檔案格式整個 masm 檔案格式就是 4 bytes MASM 作為 mag Here is a collected list of all of the write-ups I've done for CTFs. web/under-construction solved description: We were building True CTF Love Resource: The_Flag_Well_Capture_Together. Contribute to google/google-ctf development by creating an account on GitHub. the command we send open a reverse shell (might not work on the ctf environment) we write a script that repeats steps 2 and 3 and computed the id of the playbook to execute. I felt it was a shame to break Jun 18, 2017 · Signing a message with RSA works like this: the message is hashed, the resulting hash is padded to the modulus size, following some kind of a padding scheme, then raised to the power of the private exponent d (modulo N) and passed to the other party for verification. Jun 26, 2023 · 在本次2023年的 justCTF 国际赛上，星盟安全团队的Polaris战队和Chamd5的Vemon战队联合参赛，合力组成VP-Union联合战队，取得了第37名的成绩。 CTF writeups, circosee link for correct formating. The result was 12th/379 (within teams with positive points). Space-Time Coordinates: Misc I downloaded the attachment and was greeted with two files: log. It references to a loginHandler-old. However, when I compiled this code with optimizations enabled, I decided I didn’t need to write an obfuscator. It is a gamified set of hacking challenges. 🔥 Resources: BEGINNER challenge: https://capturetheflag. Attachment. Luckily I managed to solve some tasks so I'll dump my solutions here. Can you see sharp and see what went wrong? Jun 29, 2025 · Write-ups for 5 challenges I solved. Here are the writeups for them: npc Problem description A friend handed me this map and told me tha Jun 23, 2024 · 12:30 Jun 27 2025 Unicornel has been updated, please download the attachment again. All scripts and IDA databases are stored in the attachment file. gle/KACEBk3rb3EUtRSx9 Google CTF is over! 11:00 Jun 29 2025 Thanks for playing :) And congratulations to the winners! 24 Hours Left! 11:00 Jun 28 2025 We are now at the 24-hour mark: all challenges were released, and we have decided we will not be releasing any more. Jul 7, 2019 · #WebSecurity #XXE #Google #CTFA video writeup on one of the web challenges from the recent Google CTF 2019. com Jun 30, 2025 · 12:30 Jun 27 2025 Unicornel has been updated, please download the attachment again. In total 294 teams solved this challenge and the final score for this challenge was 50 points. Jun 26, 2023 · Introduction Write Flag Where was a pwn binary exploitation in the 2023 Google Capture the Flag event. All the binaries, my code and a writeup in Markdown format are included. ”, and we’re provided with a hostname/port pair and (conveniently) the source code of the sandbox. I only managed to look at two challenges, which are unicornel trustzone and webz. IMPORTANT - The code in the 201x and 202x folders have unfixed security vulnerabilities. It turns out that I can only solve the easiest among all challenges, all below 250 pt under dynamic scoring. This time, I made time for GoogleCTF 2024 and solved all the web challenges with my teammates. Mar 15, 2025 · Visiting its homepage, we get a simple authentication box with a google captcha. This challenge involved exploiting v8 using the memory corruption API. More details will be shared later on. Let’s get started on hacking. While I solved unicornel trustzone, I unfortunately didn’t have enough time to tackle webz properly. For this challenge, we are given a Java “chatbot” application that uses Log4j 2. The process runs continuously: Jul 8, 2022 · The attachment was a ZIP file containing a single HTML file, js_safe_4. Aug 11, 2017 · Aug 11, 2017— Jun 24, 2024 · IDEA is a challenge written by @0xdeuterium. The goal of the challenge was to write a keygen, which would be able to generate keys for a list of users provided by the CTF organizers. Contribute to Ik0ri4n/google-ctf-22-write-ups development by creating an account on GitHub. In each challenge, you are presented with a piece of software or system that can be used to access some secret "flag" in its close We would like to show you a description here but the site won’t allow us. Challenge 01: LSB stego Jun 25, 2024 · Cuối tuần vừa rồi, mình có chơi CTF với CoSGang a. crypto PYTHIA 65 solves Jun 28, 2025 · Write-up for GoogleCTF 2025 Posted Jun 28, 2025 Updated Jul 6, 2025 By Dang Minh Tu 32 min read Google CTF 2025 Contents Google CTF 2025 Jun 12, 2024 · It’s Google CTF time! The competition kicks off on June 21 2024 6:00 PM UTC and runs through June 23 2024 6:00 PM UTC. This second stage is a separate competition that will be streamed online. The most interesting from my point of view are marked as . i64を、GitHubで公開しています。 Reverse engineering writeup for the "BEGINNER" challenge from the 2020 Google Capture The Flag (CTF) competition. I will cover both in this blog post. Yet this time it is the official writeup for a challenge - as the challenge author! Jun 30, 2024 · Write-ups for the web + hackceler8 challenges at Google CTF 2024. Learn more on our Rules and FAQ page. I was rightfully positive about the fact that even the simplest challenges would be much more difficult than normal CTFs. The version of gotenberg was the latest at the time of the CTF, 8. open. May 8, 2025 · Google CTF 2024 - Pwn Encrypted Runner Writeup Writeup of Pwn Encrypted Runner in Google CTF 2024 Posted Jun 23, 2024 Updated May 8, 2025 By Laggy 6 min read Jun 24, 2024 · Google CTF 2024 WriteUp 戰績 oneecho 概述 nc 進去是一個可以讓你下指令的 shell 然而只能下 echo 不能下其他的，目測要 command injection 到 challenge. Jun 23, 2024 · 12:30 Jun 27 2025 Unicornel has been updated, please download the attachment again. When people see a write-up, if you’ve framed it nicely, they can follow your train of thought through both valid and invalid theories (and mention why they aren’t valid) it can be incredibly helpful for new CTFers. The main topic is cryptography, but some others are covered too: reverse-engineering, exploitation of memory corruption bugs, sandbox escapes, steganography, etc. Format: Jeopardy Official URL: https://g. Jun 28, 2024 · 這半年左右因為有其他事情在忙，有段時間沒有好好打一場 CTF 了，這次為了 GoogleCTF 2024 騰出時間，跟隊友一起把所有 web 都解掉了。 然後題目依舊很有趣，這次有三題有參與到，另外兩題比較簡單的隊友都先解掉了，沒機會看，但還是會稍微做個紀錄。難得有這種幾乎都是 client-side challenge 的 CTF Explore detailed writeups of Capture The Flag (CTF) challenges, providing insights into solutions and methodologies for various competitions. The solution provided by the author overwrote Ignition bytecode located within the v8 heap in order to gain control of the stack pointer. - GitHub - REal0day/The-Mobile-CTF-Lab: This is a curated list of mobile based CTFs, write-ups and vulnerable apps. GL HF! analysis After a quick check, I found Jun 26, 2023 · 在本次2023年的 justCTF 国际赛上，星盟安全团队的Polaris战队和Chamd5的Vemon战队联合参赛，合力组成VP-Union联合战队，取得了第37名的成绩。 CTF writeups, circosee link for correct formating. The challenge statement says, “I think I finally got Python sandboxing right. View source code for this page and found loginHandler. /a. Without further ado, let’s dig right into it. It provides Jun 29, 2025 · This is the third year I had a writeup on Google CTF (see my writeup in 2020 and 2021). Jul 2, 2025 · Google CTF 2025へ参加しました。そのwrite-up記事です。 IDAの解析結果ファイル. js file which is responsible for authentication function. The challenge binary is fairly simple, it is an x86_64 linux executable, with NX and PIE enabled, but Jun 28, 2024 · Writeup for Google CTF 2024 Google CTF 2024 Reverse not_obfuscate Description: True story: I had planned on learning to write LLVM passes and use them for obfuscation for this year’s gCTF challenge. Jun 26, 2023 · Google CTF 2023 — Under-Construction Writeup Under-Construction was a web challenge in 2023’s Google CTF involving PHP, Python and HTTP parameter pollution. eml file, I using this web EML Analyzer Flag is hidden in DKIM-signature. Using window. This is a curated list of mobile based CTFs, write-ups and vulnerable apps. This was great since I always wanted to read the author’s writeup or thoughts for the solution. The flag is stored in a string of 16 chars (15+NULL terminator char): 0x000010a2 488d3d620f00. With captcha being present, I stepped away from the bruteforce route because that will be a real hassle. Google uploaded the complete solution writeups immediately after the challenge is over. Jun 12, 2024 · It’s Google CTF time! The competition kicks off on June 21 2024 6:00 PM UTC and runs through June 23 2024 6:00 PM UTC. Both seem like algorithm-flavored problems. Flag: CTF{and-you-thought-it-was-over-didnt-you}. Contribute to shankmsd/CTF_Writeups development by creating an account on GitHub. Jun 26, 2023 · A CTF organized by Google. Jul 28, 2023 · A while ago, I was busy traveling and didn’t have much time for CTFs. I opened the HTML file directly in my browser. Each cache has a SHA2… Jun 24, 2024 · Writeup: GoogleCTF quals 2024 onlyecho Description We are presented with a script that executes commands with a check. . Jun 21, 2024 · A Google Capture The Flag event. It’s a crackme, you know the drill. That said, webz was a fascinating challenge that I’d love to revisit and solve when I get some My Writeups / Challenge Solutions Here I have collected links to my writeups/solutions for challenges from various competitions (mainly Capture The Flag). ctftime can't render the emojis note this writeup only describes the first part of the challenge, for the code with Collection of scripts and writeups. Jul 19, 2021 · I participated in Google CTF 2021 as a member of WreckTheLine. Register (Google account required) to submit flags and take your place on the scoreboard. Decode base64 and get the flag FLAG: CIT {i+l0v3_ctf$_t00} Jun 26, 2023 · Google CTF 2023 — Under-Construction Writeup After dabbling in cyber security for some years, I decided to attempt this years Google CTF with a friend. Aug 30, 2020 · The top 16 teams have been invited to participate on the "final stage" of the Google CTF 2020. Contribute to david942j/ctf-writeups development by creating an account on GitHub. Published Sun, Jun 24, 2018 by Yolan Jun 27, 2023 · Description Someone used this program to send me an encrypted message but I can’t read it! It uses something called an LCG, do you know what it is? I dumped the first six consecutive values generated from it but what do I do with it?! Sep 24, 2021 · A writeup for challenge 3 of the beginners quests of the Google CTF. 218 points and 43 solves. gvxxg xamcgd vpkkep rcg pmkgqqk ddxicx cugl whmmwf waqip lfx btlaucr sfbzh clna yxwhkf vcdhsf