Space Invader (silver, 100p)

You are Captain Kirk and Your missions is to destroy all aliens to retrieve special gem.
Go and Start Your adventure - http://10.1XX.1XX.111

Can You figure out a way how to beat space invader game?

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solution

Opening the webpage returns a JavaScript alarm with text "This Secret Space Mission is only accessible from browsers approved by 'space' agency !" and redirects to Mozilla's website about User-Agent HTTP header. Viewing the source reveals that there is a User-Agent check, verifying that space exists in User-Agent string.

if (navigator.userAgent.search("space"))
{
    alert("This Secret Space Mission is only accessible from browsers approved by 'space' agency !");
    window.location.href = "https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/User-Agent";
}

This check can be bypassed, e.g., with Chrome's override the user agent string. Website allows playing an old classic game - Space Invaders.

I lost and got "GAME OVER". Look at source in js/space_invaders.app.js and check what's happening when one wins.

function gameCompleted() {
    var playerWon = scene.allInvadersKilled();
    if (playerWon) {
        scene.drawTextOverlay("YOU WON", "Congratulations " + game.player + "!");
            var img = new Image(); 
            var div = document.getElementById('alt');
            img.onload = function(){
                div.appendChild(img);
            } 
            img.src ="graphics/space.png";
    } else {
        scene.drawTextOverlay("GAME OVER", "Too bad... " + game.player);
    }
}

Image graphics/space.png is shown to the winner.

Fixing the QR code (drawing a rectangle) and reading it with QR reader, gives the flag - 52ead9934c8becb0ca961590b5b42176.