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#ctf — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #ctf, aggregated by home.social.

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  1. 🌏 A shout out to everyone who attended Saturday's Global OSINT Search Party CTF In conjunction with #DEFCON34 and The #OSINT4GOOD Community.

    A Big thank you to all our Staff members including the Tech team and Volunteer coaches who also received lunch from our Sponsors SockPuppet , @epieos , KASM technologies and @usersearch_web

    👉 Also a special thank you to the Las Vegas Metropolitan Police Department for providing cases.

    🌐 Thank you and see you in October!

    #OSINT #CTF

  2. 🌏 A shout out to everyone who attended Saturday's Global OSINT Search Party CTF In conjunction with #DEFCON34 and The #OSINT4GOOD Community.

    A Big thank you to all our Staff members including the Tech team and Volunteer coaches who also received lunch from our Sponsors SockPuppet , @epieos , KASM technologies and @usersearch_web

    👉 Also a special thank you to the Las Vegas Metropolitan Police Department for providing cases.

    🌐 Thank you and see you in October!

    #OSINT #CTF

  3. You can solve simple pwn challenges (ret2win in this example) with nothing but the stuff you have in a standart linux distro. :)

    #CTF #tips

    #ECSC

  4. You can solve simple pwn challenges (ret2win in this example) with nothing but the stuff you have in a standart linux distro. :)

    #CTF #tips

    #ECSC

  5. #introduction

    Final-year CS student pivoting hard into offensive security. Currently working through the TryHackMe Jr Pentester path and learning Burp Suite properly instead of clicking buttons and
    hoping.

    Also grinding DSA in Java, which I am worse at than I'd like.

    Here to learn from people who actually do this for a living. Posting writeups, dumb questions, and things I got wrong.

    #infosec #pentesting #ctf #linux #cybersecurity #introduction

  6. #introduction

    Final-year CS student pivoting hard into offensive security. Currently working through the TryHackMe Jr Pentester path and learning Burp Suite properly instead of clicking buttons and
    hoping.

    Also grinding DSA in Java, which I am worse at than I'd like.

    Here to learn from people who actually do this for a living. Posting writeups, dumb questions, and things I got wrong.

    #infosec #pentesting #ctf #linux #cybersecurity #introduction

  7. Now for the prizes of our placed teams!

    NGOSINT ID in third place you’ve earned:
    • 4x Developer License (1 month each) from OSINTLeak
    • 4x Osinter plans (3 Months) from Epieos
    • 4x UserSearch Premium subscriptions (1 month) from UserSearch 2.0
    • 4x Unlimited Access to On-Demand training from The OSINTion

    Congratulations, NGOSINT ID 👍

    OSINT mindset in second place you’ve earned:
    • 4x Developer License (2 months each) from OSINTLeak
    • 4x Osinter plans (6 Months) from Epieos
    • 4x UserSearch Premium subscriptions (1 month) from UserSearch
    • 4x Unlimited Access to On-Demand training from The OSINTion

    Congratulations, OSINT mindset! 🥳

    oSint & Giggles in first place you’ve earned:
    • 4x Developer License (1 month each) from OSINTLeak
    • 4x OSC Vouchers from OSMOSIS Association
    • 4x Forensic OSINT vouchers from Forensic OSINT
    • 4x Osinter plans (1 year) from Epieos
    • 4x Cloud VM OSINT Workspace access from Kasm Technologies
    • 4x UserSearch Premium subscriptions (1 month) from UserSearch
    • 4x Unlimited Access to On-Demand training from The OSINTion

    Congratulations, oSint & Giggles! 💯

    Our - Most Valuable OSINT Winner - Snack Overflow!
    you’ve earned: 4x Developer License (1 month each) from OSINTLeak
    • 4x OSC Vouchers from Osmosis
    • 4x UserSearch Premium subscriptions (1 month) from UserSearch
    • 4x Unlimited Access to On-Demand training from The OSINTion

    Congratulations, Snack Overflow! 🕵‍♀️

    🌐 See you all at our next Global OSINT Search Party CTF in October!

    #OSINT4GOOD #OSINT #CTF #TraceLabs #DEFCON34

  8. Now for the prizes of our placed teams!

    NGOSINT ID in third place you’ve earned:
    • 4x Developer License (1 month each) from OSINTLeak
    • 4x Osinter plans (3 Months) from Epieos
    • 4x UserSearch Premium subscriptions (1 month) from UserSearch 2.0
    • 4x Unlimited Access to On-Demand training from The OSINTion

    Congratulations, NGOSINT ID 👍

    OSINT mindset in second place you’ve earned:
    • 4x Developer License (2 months each) from OSINTLeak
    • 4x Osinter plans (6 Months) from Epieos
    • 4x UserSearch Premium subscriptions (1 month) from UserSearch
    • 4x Unlimited Access to On-Demand training from The OSINTion

    Congratulations, OSINT mindset! 🥳

    oSint & Giggles in first place you’ve earned:
    • 4x Developer License (1 month each) from OSINTLeak
    • 4x OSC Vouchers from OSMOSIS Association
    • 4x Forensic OSINT vouchers from Forensic OSINT
    • 4x Osinter plans (1 year) from Epieos
    • 4x Cloud VM OSINT Workspace access from Kasm Technologies
    • 4x UserSearch Premium subscriptions (1 month) from UserSearch
    • 4x Unlimited Access to On-Demand training from The OSINTion

    Congratulations, oSint & Giggles! 💯

    Our - Most Valuable OSINT Winner - Snack Overflow!
    you’ve earned: 4x Developer License (1 month each) from OSINTLeak
    • 4x OSC Vouchers from Osmosis
    • 4x UserSearch Premium subscriptions (1 month) from UserSearch
    • 4x Unlimited Access to On-Demand training from The OSINTion

    Congratulations, Snack Overflow! 🕵‍♀️

    🌐 See you all at our next Global OSINT Search Party CTF in October!

    #OSINT4GOOD #OSINT #CTF #TraceLabs #DEFCON34

  9. And finally, our Most Valuable OSINT award. 🕵‍♀️

    This award goes to the team that submits a piece of intelligence that is either highly actionable or well documented, or both.

    In this case, it was both. Congratulations to team Snack Overflow for your outstanding submission. 🥳

    #OSINT4GOOD #OSINT #TraceLabs #CTF #DEFCON34

  10. And finally, our Most Valuable OSINT award. 🕵‍♀️

    This award goes to the team that submits a piece of intelligence that is either highly actionable or well documented, or both.

    In this case, it was both. Congratulations to team Snack Overflow for your outstanding submission. 🥳

    #OSINT4GOOD #OSINT #TraceLabs #CTF #DEFCON34

  11. 💯 In first place for this CTF is team oSInt & Giggles, with 101 submissions and 6650 points.

    #OSINT4GOOD #OSINT #TraceLabs #CTF #DEFCON34

  12. 💯 In first place for this CTF is team oSInt & Giggles, with 101 submissions and 6650 points.

    #OSINT4GOOD #OSINT #TraceLabs #CTF #DEFCON34

  13. 🌏 In second place for this CTF is team OSINT MINDSET, with 97 submission and 6590 points.

    #OSINT4GOOD #OSINT #CTF #TraceLabs #DEFCON34

  14. 🌏 In second place for this CTF is team OSINT MINDSET, with 97 submission and 6590 points.

    #OSINT4GOOD #OSINT #CTF #TraceLabs #DEFCON34

  15. 👉 In third place for this CTF is team NGOSINAT ID, with 77 submissions and 4730 points.

    #OSINT4GOOD #OSINT #TraceLabs #CTF #DEFCON34

  16. 👉 In third place for this CTF is team NGOSINAT ID, with 77 submissions and 4730 points.

    #OSINT4GOOD #OSINT #TraceLabs #CTF #DEFCON34

  17. 👉 First, a big thank you to all of our sponsors for this CTF, but in particular to @SockPuppet.io, Kasm Technologies, @epieos and @usersearch_web for your generous cash contributions to make sure our volunteer staff and coaches got lunch money! Double thank-you to SockPuppet for being a double sponsor and sending actual socks and stickers for participants.

    👇 Stats for this CTF:
    110 Teams
    3192 submissions
    2290 accepted submissions.

    #OSINT4GOOD #OSINT #TraceLabs #CTF #DEFCON34

  18. 👉 First, a big thank you to all of our sponsors for this CTF, but in particular to @SockPuppet.io, Kasm Technologies, @epieos and @usersearch_web for your generous cash contributions to make sure our volunteer staff and coaches got lunch money! Double thank-you to SockPuppet for being a double sponsor and sending actual socks and stickers for participants.

    👇 Stats for this CTF:
    110 Teams
    3192 submissions
    2290 accepted submissions.

    #OSINT4GOOD #OSINT #TraceLabs #CTF #DEFCON34

  19. Leaderboard pressure is building. 🚩Here's the count as of 16:10 today.

    🥇 TheSnorIx — 552 pts | 5 solves
    🥈 STUMBLEDORE — 437 pts | 4 solves
    🥉 Forge — 321 pts | 4 solves

    The gap is getting tighter. One more flag could change the board fast.

    #DEFCON34 #CTF #RoboticHackingCommunity #PhysicalAI

  20. «Bro, what…?» #1. Первый контакт с crackme на Linux x86-64

    Вы запускаете программу, о которой ничего не знаете. Она вежливо просит строку, а в ответ на ваш ввод насмешливо отвечает: «Bro, what are you trying to do?» И правда, что мы пытаемся сделать? Пытаемся понять ее. Перед нами crackme – программа-головоломка, написанная для тренировки навыков обратной разработки: бинарник под Linux x86-64 без исходников и документации, который издевается над каждым, кто не смог его разгадать. Это первая статья цикла из трех о гибридном анализе крякми Getting Started Keygen (Mazzottis). Мы осмотрим файл штатными утилитами, найдем main в Ghidra, расшифруем «бессмысленные» имена переменных в реальную раскладку стека и подтвердим гипотезы в GDB. По пути встретим оптимизированный пролог без RBP, «хитрое» беззнаковое условие и std::string , спрятавшийся в трех переменных, которые на первый взгляд никак не связаны. Во второй части цикла – мутационное тестирование и реконструкция скрытой структуры, в третьей – полный разбор хеш-функции и восстановление алгоритма на Python. Читать первую часть

    habr.com/ru/articles/1068160/

    #реверсинжиниринг #Ghidra #GDB #ассемблер #x8664 #crackme #CTF #отладка #Linux #C++

  21. 👇 Incoming Trace Labs Global OSINT Search Party CTF photo dump.

    Today at #DEFCON34 in the #OSINT4GOOD Community, volunteer staff members shared stories, ideas, tips, tricks and techniques in open-source intelligence for the good of bringing missing people home.

    Sarah K. Miller, Angela R, KennyJ and Brent(R-naught) showcased #TraceLabs in front of dozens of people with the support of volunteers both in person and remote around the world.

    Thank you to our volunteer leadership and community members for making this happen.

    👥 See you tomorrow at our Global OSINT search party.

    #OSINT #CTF

  22. 👇 Incoming Trace Labs Global OSINT Search Party CTF photo dump.

    Today at #DEFCON34 in the #OSINT4GOOD Community, volunteer staff members shared stories, ideas, tips, tricks and techniques in open-source intelligence for the good of bringing missing people home.

    Sarah K. Miller, Angela R, KennyJ and Brent(R-naught) showcased #TraceLabs in front of dozens of people with the support of volunteers both in person and remote around the world.

    Thank you to our volunteer leadership and community members for making this happen.

    👥 See you tomorrow at our Global OSINT search party.

    #OSINT #CTF

  23. The CTF board is moving. 👀

    One team has already cleared Q1 (Prompt Injection), alongside the more approachable Q4 (ROS 2).

    Leaderboard’s up. Now the question is: who’s taking the next flag? 🚩

    @defcon
    #DEFCON34 #RoboticHackingCommunity #PhysicalAI #CTF #RoboticsCybersecurity

  24. And we're off! The #DC34 HHV CTF starts now!
    Come by HHV and jump in - our friends will be glad you did... #furbtar
    #hardwarehacking #ctf @defcon

  25. And we're off! The #DC34 HHV CTF starts now!
    Come by HHV and jump in - our friends will be glad you did... #furbtar
    #hardwarehacking #ctf @defcon

  26. 🛠️🏴‍☠️ MHV CTF Challenge Highlight! @defcon

    R/V Arctic Intrepid -- you’ll start topside at the ROV console and work your way down the stack to the secure-boot ROM.

    Firmware reversing, ARM Cortex-M stack overflows, format-string leaks, ROP chains, ARM TrustZone-style NSC flaws, and secure-boot bypasses.

    Want to try it out? --> Stop by the Maritime Village at DEF CON, dive into the R/V Arctic Intrepid, and show us what you've got!

    #DEFCON #DEFCON34 #CTF #MHV #MaritimeVillage

  27. 🛠️🏴‍☠️ MHV CTF Challenge Highlight! @defcon

    R/V Arctic Intrepid -- you’ll start topside at the ROV console and work your way down the stack to the secure-boot ROM.

    Firmware reversing, ARM Cortex-M stack overflows, format-string leaks, ROP chains, ARM TrustZone-style NSC flaws, and secure-boot bypasses.

    Want to try it out? --> Stop by the Maritime Village at DEF CON, dive into the R/V Arctic Intrepid, and show us what you've got!

    #DEFCON #DEFCON34 #CTF #MHV #MaritimeVillage

  28. The robots checked in before the researchers did.

    Chillin' before the CTF happens. Come find them at the Robotic Hacking Community, @defcon 34.

    Join the RoboHack AI CTF — register on-site, play from anywhere.

    RHC opens Aug 7 · LVCC West Hall 4 · Level 1 · Room 1309

    #DEFCON34 #RoboticHackingCommunity #CTF #PhysicalAI

  29. The robots checked in before the researchers did.

    Chillin' before the CTF happens. Come find them at the Robotic Hacking Community, @defcon 34.

    Join the RoboHack AI CTF — register on-site, play from anywhere.

    RHC opens Aug 7 · LVCC West Hall 4 · Level 1 · Room 1309

    #DEFCON34 #RoboticHackingCommunity #CTF #PhysicalAI

  30. Only 48 hours left to get your off-site tickets for our upcoming Global OSINT Search Party CTF, in partnership with @defcon and Las Vegas Metro Police Department!

    Have you ever wanted to use your skills to help look for actual missing people? We are excited to be partnering with LVMPD for our upcoming OSINT CTF at DEF CON 34 from 12 PM TO 4 PM, Saturday, August 8. People of all skill levels are welcome! You'll work in teams of up to 4 people, combining your skills to work on 4 or 5 active missing persons cases from the Las Vegas area. If you are on-site at DEF CON, you can stop by the OSINT4Good Community to pickup a free ticket beginning Friday morning at 10 AM. Everyone off-site can purchase a ticket up until 12 PM PDT on Thursday, August 6 by going to tracelabs.org/tickets.

    #OSINT4Good #OSINT #CTF #DEFCON34

  31. Only 48 hours left to get your off-site tickets for our upcoming Global OSINT Search Party CTF, in partnership with @defcon and Las Vegas Metro Police Department!

    Have you ever wanted to use your skills to help look for actual missing people? We are excited to be partnering with LVMPD for our upcoming OSINT CTF at DEF CON 34 from 12 PM TO 4 PM, Saturday, August 8. People of all skill levels are welcome! You'll work in teams of up to 4 people, combining your skills to work on 4 or 5 active missing persons cases from the Las Vegas area. If you are on-site at DEF CON, you can stop by the OSINT4Good Community to pickup a free ticket beginning Friday morning at 10 AM. Everyone off-site can purchase a ticket up until 12 PM PDT on Thursday, August 6 by going to tracelabs.org/tickets.

    #OSINT4Good #OSINT #CTF #DEFCON34

  32. VulNyx CTF War Writeup

    The War machine is an easy-level Windows system that runs on a Tomcat web server with unsecured credentials. By using an upload function, we can gain a foothold on the system. After that, we can escalate our privileges by exploiting the SeImpersonatePrivilege, which enables us to become the root user and capture the flag.

    thecybercraft.medium.com/vulny

    #ctf #pentesting #cybersecurity #tomcat #infosec

  33. 🚨🏴‍☠️ Challenge Spotlight: Anduril Acoustic Intercept CTF

    Join us at @defcon to learn how to hack acoustic underwater comms with Anduril! Subs and autonomous underwater vehicles use acoustics to talk underwater. Can you RE it?!

    maritimehackingvillage.com/dc3

    #DEFCON #DEFCON34 #CTF #MHV #MaritimeVillage

  34. 🚨🏴‍☠️ Challenge Spotlight: Anduril Acoustic Intercept CTF

    Join us at @defcon to learn how to hack acoustic underwater comms with Anduril! Subs and autonomous underwater vehicles use acoustics to talk underwater. Can you RE it?!

    maritimehackingvillage.com/dc3

    #DEFCON #DEFCON34 #CTF #MHV #MaritimeVillage

  35. Никто не показывает, как стандарты ИБ связаны друг с другом поэтому пришлось собрать самому

    OWASP, лаборатории, CVE, инструменты и патчи обычно живут в разных местах. Каждый раз собирать этот маршрут заново утомительно, поэтому и сделал RØØT — автономный полигон, который связывает всё в один процесс: понять → проверить → доказать → исправить → перепроверить

    habr.com/ru/articles/1065380/

    #кибербезопасность #AppSec #OWASP #CTF #API_Security #DevSecOps #CVE #CISA_KEV #open_source #root

  36. We are excited to bring Adversary Village to @blackhat USA 2026 in Las Vegas!
    Join us at The Interface, Business Hall, Mandalay Bay, from 4–6 August 2026, where we will be hosting hands-on activities focused on offensive cybersecurity and adversary simulation.
    Explore our interactive challenge stations, including #AttackOfTheAPTs and #AdversaryCTF, meet the team, connect with the community, and have some fun along the way.
    Interface area activity schedule: blackhat.com/us-26/features/sc
    More info: adversaryvillage.org/adversary
    #AdversaryVillage #BlackHatUSA #BlackHat #CyberSecurity #OffensiveSecurity #AdversarySimulation #CTF

  37. We are excited to bring Adversary Village to @blackhat USA 2026 in Las Vegas!
    Join us at The Interface, Business Hall, Mandalay Bay, from 4–6 August 2026, where we will be hosting hands-on activities focused on offensive cybersecurity and adversary simulation.
    Explore our interactive challenge stations, including #AttackOfTheAPTs and #AdversaryCTF, meet the team, connect with the community, and have some fun along the way.
    Interface area activity schedule: blackhat.com/us-26/features/sc
    More info: adversaryvillage.org/adversary
    #AdversaryVillage #BlackHatUSA #BlackHat #CyberSecurity #OffensiveSecurity #AdversarySimulation #CTF

  38. Level up your cybersecurity skills! 💻 Parrot Assassin built a free lab to practice those pesky OWASP Top 10 vulnerabilities. Just need Docker and Docker Compose to get started. Check it out! #CTF #Cybersecurity #OWASP

    youtube.com/watch?v=gNPdBktjNlA

  39. The patient is missing. The signals are live. The hospital is hiding something.
    Enter St. Dismas Hospital for CODE CADAVER, the @biohacking_village Village CTF. Trace wireless beacons, pivot from guest to production, investigate HL7, DICOM, RFID, pagers, infusion systems, imaging, cabinets, and the secrets buried inside the network.

    Find the patient. Follow the signals. Expose the network.

    Play Code Cadaver CTF: August 7-9

    #BiohackingVillage #DEFCON34 #CTF #HealthcareCybersecurity

  40. 👉 Thank you SockPuppet!

    Not only are they sponsoring prizes for top teams, but they “double donated” funds to make sure our volunteer coaches and staff get lunch at our upcoming Global OSINT Search Party CTF at #DEFCON34 on August 8!

    🌐 For more info on them, visit: sockpuppet.io/

    #OSINT4Good #TraceLabs #OSINT #CTF