Mordor <0x0539/> By Sleep

[Ernestbok]

So Here are my results for 0x0539.net ctf
Twitter.com/ClumsyLulz

0x0539.net by SleepTheGod

<?php

function setck($name,$val) {
setcookie($name, $val);
$_COOKIE[$name] = $val;
}

if(isset($_POST['source'])) {
echo "<pre>";
echo htmlentities(preg_replace('/FLAG{([a-z0-9_]+)}/i','FLAG{figure_it_out}', file_get_contents(__FILE__)));
echo "</pre>";
die();
}

session_start();
if(!isset($_SESSION['c1_streak'])) $_SESSION['c1_streak'] = 0;
if(!isset($_COOKIE['rounds'])||!is_numeric($_COOKIE['rounds'])) {
setck("rounds", 1);
}
if($_SESSION['c1_streak'] >= $_COOKIE['rounds']) {
$_SESSION['c1_streak'] = 0; //No cheating!
}

if(isset($_POST['reset'])) {
//Give the poor unlucky players a way to restart after the game gets too hard
setck("rounds", 1);
$_SESSION['c1_streak'] = 0;
}

if(isset($_POST['guess'])) {
//Make it more difficult with every round
$rnd = mt_rand(1, $_COOKIE['rounds']);

$guess = (int)$_POST['guess'];
setck("rounds", ++$_COOKIE['rounds']);

if(md5($rnd) == md5($_POST['guess'])) {
$_SESSION['c1_streak']++;
echo "Congratulations, the number was $rnd<br/><br/>";
} else {
$_SESSION['c1_streak'] = 0;
echo "You guessed $guess, but the number was $rnd<br/><br/>";
sleep(1);
}
if($_SESSION['c1_streak'] >= 100) {
echo "FLAG{figure_it_out}";
die();
}
}
echo '<h1>Luck Tester</h1>
<h3>Just guess correctly 100 times in a row to win</h3>
<hr/>';
echo 'Rounds: '.$_COOKIE['rounds'].'<br/>';
echo 'Streak: '.$_SESSION['c1_streak'].'<br/><hr/>';

?>
<form method="POST">
<input type="text" name="guess" /><input type="submit" value="Guess!"/>
</form>
Getting too hard? Feel free to reset:
<form method="POST">
<input type="submit" name="reset" value="Reset!"/>
</form>
Or just view the source:
<form method="POST">
<input type="submit" name="source" value="Source!"/>
</form>
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[alchih]

Great!

 

[akaWz]

let me see!

 

[fsfs343]

awesomeee!

 

[miguekkjk0]

good job and keep posting

 

[miraclelol]

big leak

 

[Ppplonerbby]

best user

 

[Spy6]

good share, thanks

 

[nokedlee93]

Great share man... let me see

 

[Brooks60]

quality content