Czechstreets - 139
echo "eyJmbGFnIjoiY2hlY2hzdHJlZXRzeyBmbGFnX3JlYWxseV9lbWFpbF9odG1sIH0ifQ==" | base64 -d Gives:
GET /api/streets?offset=138&limit=1000000 Running the request: czechstreets 139
<!DOCTYPE html> <html> <head><title>Czech Streets – Find the hidden street</title></head> <body> <h1>Welcome to the Czech Streets challenge!</h1> <p>Enter a street name to see its details.</p> | | Flag format | czechstreets… | "flag":"czechstreets
Event: CzechStreets CTF (2024) Category: Web / Information‑Disclosure / Minor Crypto Difficulty: ★★☆☆☆ (easy–medium) 1️⃣ Challenge Overview | Item | Description | |------|-------------| | Title | czechstreets – 139 | | Provided | A public URL: http://139.czechstreets.ctf (the “139” sub‑domain is part of the challenge name). The landing page shows a simple map of Prague with numbered streets and a tiny search box that says “Find the hidden street”. | | Goal | Retrieve the flag, which is hidden somewhere on the site. | | Flag format | czechstreets… | Welcome to the Czech Streets challenge!<
"flag":"czechstreets flag_really_email_html " The flag is clearly embedded in the JSON. A one‑liner to fetch and decode in one go: