HACKvent19 writeup

This year’s HACKvent was hosted on the brand new Hacking-Lab 2.0 plattform. Each day from the 1st of december until the 24th a new challenge is published raising in difficulty. The flag format changed from HV18-xxxx-xxxx-xxxx-xxxx-xxxx to HV19{...}. After all I managed to solve all 28 challenges 🙂
Hidden
HV19.H1 Hidden One
HV19.H2 Hidden Two
HV19.H3 Hidden Three
HV19.H4 Hidden Four
Easy
HV19.01 censored
HV19.02 Triangulation
HV19.03 Hodor, Hodor, Hodor
HV19.04 password policy circumvention
HV19.05 Santa Parcel Tracking
HV19.06 bacon and eggs
HV19.07 Santa Rider
Medium
HV19.08 SmileNcryptor 4.0
HV19.09 Santas Quick Response 3.0
HV19.10 Guess what
HV19.11 Frolicsome Santa Jokes API
HV19.12 back to basic
HV19.13 TrieMe
HV19.14 Achtung das Flag
Hard
HV19.15 Santa’s Workshop
HV19.16 B0rked Calculator
HV19.17 Unicode Portal
HV19.18 Dance with me
HV19.19 U+1F385
HV19.20 i want to play a game
HV19.21 Happy Christmas 256
Leet
HV19.22 The command … is lost
HV19.23 Internet Data Archive
HV19.24 ham radio

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HACKvent18 writeup

For the sixth time in a row now hacking-lab.com carried out the annual HACKvent. Each day from the 1st of december until the 24th a new challenge is published. I would have loved to spend more time on it, but time is a rare resource especially on the days before christmas 😉 After all I managed to solve 21 of 24 tasks:

Easy
Day 01: Just Another Bar Code
Day 02: Me
Day 03: Catch me
Day 04: pirating like in the 90ies
Day 05: OSINT 1
Day 06: Mondrian
Day 07: flappy.pl
Medium
Day 08: Advent Snail
Day 09: fake xmass balls
Day 10: >_ Run, Node, Run
Day 11: Crypt-o-Math 3.0
Day 12: SmartWishList
Day 13: flappy’s revenge
Day 14: power in the shell
Hard
Day 15: Watch Me
Day 16: Pay 100 Bitcoins
Day 17: Faster KEy Exchange
Day 18: Be Evil
Day 19: PromoCode
Day 20: I want to play a game
Day 21: muffinCTF (Day 1)
Day 22: muffinCTF (Day 2)
Day 23: muffinCTF (Day 3)
Final
Day 24: Take the red pill, take the blue pill

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HACKvent17 writeup

As every year hacking-lab.com carried out the annual HACKvent challenge. Each day from the 1st of december until the 24th a new challenge is published. The difficulty raises from day to day. After all I managed to solve 20 of 24 tasks:

Easy
Day 01: 5th anniversary
Day 02: Wishlist
Day 03: Strange Logcat Entry
Medium
Day 04: HoHoHo
Day 05: Only one hint
Day 06: Santa’s journey
Day 07: i know …
Day 08: True 1337s
Day 09: JSONion
Day 10: Just play the game
Hard
Day 11: Crypt-o-Math 2.0
Day 12: giftlogistics
Day 13: muffin_asm
Day 14: Happy Cryptmas
Day 15: Unsafe Gallery
Day 16: Try to escape …
Day 17: Portable NotExecutable
Final
Day 18: I want to play a Game (Reloaded)
Day 19: Cryptolocker Ransomware
Day 20: linux malware
Day 21: tamagotchi
Day 22: frozen flag
Day 23: only perl can parse Perl
Day 24: Chatterbox

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