zsteg

zsteg Description PNG 및 BMP에서 스테가노그래피로 숨겨진 데이터 탐지 Installation gem install zsteg Detects: PNG 및 BMP의 LSB 스테가노그래피 zlib 압축 데이터 OpenStego Camouflage 1.2.1 에라토스테네스 집합을 이용한 LSB Usage zsteg -h Usage: zsteg options filename.png paramstring -a, --all try all known methods -E, --extract NAME extract...

50m-ctf: 0xc0ffee's 50M-CTF Submission

Introduction This CTF was extremely fun and truly original. It covered different kinds of very interesting challenges where completing one challenge led to another one, like some sort of quest with various levels. Thank you Cody and HackerOne for giving 5 hackers the opportunity to go to Vegas,...

50m-ctf: CTF Writeup - c8889970d9fb722066f31e804e351993

CTF Code: c8889970d9fb722066f31e804e351993 HackerOne $50M CTF Write-Up ============ I came across this tweet announcing the HackerOne CTF for invitations to the HackerOne event in Vegas during DEFCON. I tried searching for a URL for the CTF, but couldn't find anything online, so I assumed that th...

50m-ctf: `Cody trolled us all` h1-702 CTF write-up

Premise I use not to play CTF challenges because they usually absorb me entirely. I cannot think of anything else but "I want that flag!". That said, this is going to be a long story: no princess, no dragoons, only a tweet. https://twitter.com/Hacker0x01/status/1100543680383832065 Level 0 - Nothi...

50m-ctf: CTF Writeup

Hackerone 50m-CTF Writeup By VoidMercy Proof of Completion: c8889970d9fb722066f31e804e351993 Step 1: Twitter Post Image Steganography The 50M Hackerone challenge began with a tweet from @Hacker0x01. At first, I did not expect this tweet to be the start of the challenge, but little did I know, thi...