Post

LOS Lv.14 giant

Wargame, rubiya
Posted

giant

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query : select 1234 fromprob_giant where 1

<?php 
  include "./config.php"; 
  login_chk(); 
  $db = dbconnect(); 
  if(strlen($_GET[shit])>1) exit("No Hack ~_~"); 
  if(preg_match('/ |\n|\r|\t/i', $_GET[shit])) exit("HeHe"); 
  $query = "select 1234 from{$_GET[shit]}prob_giant where 1"; 
  echo "<hr>query : <strong>{$query}</strong><hr><br>"; 
  $result = @mysqli_fetch_array(mysqli_query($db,$query)); 
  if($result[1234]) solve("giant"); 
  highlight_file(__FILE__); 
?>

Solution

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입력값에 {공백, \n, \r, \t} 필터링.

쿼리가 현재 띄워쓰기를 해줘야 하는 상황. 즉 공백 우회.

?shit=%0b 또는 %0c
Wargame, rubiya
This post is licensed under CC BY 4.0 by the author.