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Fire Alert
Challenge
In case of fire, break the glass and press the button.
http://46.101.107.117:2204
Note: The service is restarted every hour at x:00.
Solution
We see a website with a button, it logs some color lines to the console, but it looks like also a flag
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function firealert() {
console.log("%c x", "color:transparent; border-left: 1000px solid lightgreen;");console.log("%c x", "color:transparent; border-left: 1000px solid blue;");
console.log("%c x", "color:transparent; border-left: 1000px solid red;");console.log("%c x", "color:transparent; border-left: 1000px solid tomato;");
console.log("%c x", "color:transparent; border-left: 1000px solid darkgray;");console.log("%c x", "color:transparent; border-left: 1000px solid yellow;");
console.log("%c x", "color:transparent; border-left: 1000px solid black;");console.log(atob("JWMgZmxhZzogaGUyMDIye3RoMXNfZmw0Z18xc19ibDRja19uMHR9"), "color:transparent; border-left: 1000px solid magenta;");
console.log("%c x", "color:transparent; border-left: 1000px solid purple;");console.log("%c x", "color:transparent; border-left: 1000px solid lightblue;");
console.log("%c x", "color:transparent; border-left: 1000px solid green;");console.log("%c x", "color:transparent; border-left: 1000px solid gray;");
window.location.href='https://www.youtube.com/watch?v=0oBx7Jg4m-o';
}
setInterval(function() {
document.body.style.backgroundColor = "#" + Math.floor(Math.random()*16777215).toString(16);
}, 1000)
Running atob("JWMgZmxhZzogaGUyMDIye3RoMXNfZmw0Z18xc19ibDRja19uMHR9") it the console gets us our flag
Flag
he2022{th1s_fl4g_1s_bl4ck_n0t}