wargame.kr - 3번, flee button

와 오늘만 포스팅 3개째 ㅋㅋㅋㅋㅋㅋㅋㅋ

 

우선, 3번문제를 확인해 보면,

 

버튼을 클릭하라면서, 나는 그것(버튼)을 잡을 수 없단다. 버튼이 마우스커서를 피해다니는 것인가? 라는 생각이 든다.

 

실제로 사이트를 접속해보면, 우선 멘붕이온다 ㅋㅋㅋㅋ

 

 

저기 가운데에 있는 버튼이 마우스커서를 중심으로 계속 움직여서 클릭을 할 수 가없다.

 

그래서, 소스코드를 확인해야 한다.

 

 

<script>eval(unescape_blue14("%72%7d%71%85%7b%73%7c%84%34%87%82%77%84%73%2c%85%7c%73%83%71%6d%80%73%6b%70%7a%85%73%37%3a%2c%26%29%3a%3a%29%3d%38%29%3d%3d%29%40%3c%29%38%3a%29%3d%3d%29%3d%38%29%3a%3b%29%38%3c%29%3d%39%29%40%39%29%3d%37%29%38%3c%29%38%3a%29%40%39%29%40%3a%29%40%41%29%3d%6d%29%3d%39%29%3a%3b%29%38%3c%29%40%36%29%3d%72%29%40%39%29%3d%3d%29%40%3a%29%3d%3d%29%3d%72%29%3d%71%29%3a%38%29%3c%72%29%3d%36%29%40%39%29%3d%72%29%3d%6d%29%40%3b%29%40%3a%29%3d%39%29%3a%39%29%38%3c%29%3a%3c%29%3a%3a%29%3d%3d%29%3d%71%29%40%36%29%40%3b%29%40%3a%29%38%3a%29%40%3a%29%40%41%29%40%36%29%3d%39%29%3a%3b%29%38%3c%29%3d%36%29%40%3b%29%40%3a%29%40%3a%29%3d%72%29%3d%71%29%38%3c%29%38%3a%29%3d%72%29%3d%71%29%3d%3a%29%3d%72%29%3d%37%29%40%3b%29%40%39%29%3a%3b%29%38%3c%29%3d%71%29%3d%72%29%3d%41%29%40%36%29%38%71%29%38%72%29%3a%39%29%38%3c%29%38%3a%29%3d%72%29%3d%71%29%3d%37%29%3d%6d%29%3d%3d%29%3d%37%29%3d%41%29%3a%3b%29%38%3c%29%40%3d%29%3d%3d%29%3d%71%29%3d%38%29%3d%72%29%40%3d%29%39%3a%29%3d%6d%29%3d%72%29%3d%37%29%3c%72%29%40%3a%29%3d%3d%29%3d%72%29%3d%71%29%3a%3b%29%38%70%29%3a%3d%29%3d%41%29%3d%39%29%40%41%29%3a%3b%29%39%4A%29%3D%38%29%3D%39%29%3D%39%29%38%70%29%3a%39%29%38%3c%29%38%3a%29%40%3c%29%3c%72%29%3d%6d%29%40%3b%29%3d%39%29%3a%3b%29%38%3c%29%3d%37%29%3d%6d%29%3d%3d%29%3d%37%29%3d%41%29%38%3a%29%3d%70%29%3d%39%29%38%3b%29%38%3c%29%3a%3c%29%3a%3a%29%39%3b%29%3d%38%29%3d%3d%29%40%3c%29%3a%3c%29%3a%3a%29%3d%3d%29%3d%71%29%40%36%29%40%3b%29%40%3a%29%38%3a%29%40%3a%29%40%41%29%40%36%29%3d%39%29%3a%3b%29%38%3c%29%40%3a%29%3d%39%29%40%40%29%40%3a%29%38%3c%29%38%3a%29%40%38%29%3d%39%29%3c%72%29%3d%38%29%3d%72%29%3d%71%29%3d%6d%29%40%41%29%38%3a%29%40%39%29%40%3a%29%40%41%29%3d%6d%29%3d%39%29%3a%3b%29%38%3c%29%40%3d%29%3d%3d%29%3d%38%29%40%3a%29%3d%3c%29%3a%38%29%39%41%29%39%70%29%39%3c%29%3a%39%29%38%3c%29%38%3a%29%3d%3d%29%3d%38%29%3a%3b%29%38%3c%29%3d%3c%29%3d%3d%29%3d%71%29%40%3a%29%38%3c%29%38%3a%29%40%3c%29%3c%72%29%3d%6d%29%40%3b%29%3d%39%29%3a%3b%29%38%3c%29%3d%38%29%3d%72%29%38%3a%29%40%41%29%3d%72%29%40%3b%29%38%3a%29%40%3d%29%3c%72%29%3d%71%29%40%3a%29%38%3a%29%40%3a%29%3d%72%29%38%3a%29%3d%40%29%3d%72%29%3d%3d%29%3d%71%29%3a%3d%29%38%3a%29%3d%37%29%3c%72%29%40%3a%29%3d%37%29%3d%3c%29%38%3a%29%3d%36%29%40%3b%29%40%3a%29%40%3a%29%3d%72%29%3d%71%29%39%38%29%38%3a%29%3d%3d%29%3d%3a%29%38%3a%29%40%41%29%3d%72%29%40%3b%29%38%3a%29%3d%37%29%3c%72%29%3d%71%29%38%3b%29%38%3c%29%3a%3c%26%2d%2d%43%7d%70%78%45%72%7d%71%85%7b%73%7c%84%34%75%73%84%4d%7a%73%7b%73%7c%84%4a%89%53%72%2c%26%73%83%71%26%2d%43%72%7d%71%85%7b%73%7c%84%34%7d%7c%7b%7d%85%83%73%7b%7d%86%73%45%73%83%71%72%77%86%43%72%7d%71%85%7b%73%7c%84%34%7d%7c%79%73%89%80%82%73%83%83%45%7c%7d%79%80%43%7d%70%78%34%83%84%89%7a%73%34%7a%73%74%84%45%33%38%36%36%43%7d%70%78%34%83%84%89%7a%73%34%84%7d%80%45%33%38%36%36%43%86%6d%82%24%77%45%36%32%6d%88%45%36%32%6d%89%45%38%36%36%32%83%87%45%37%32%82%45%38%36%36%43%72%7d%71%85%7b%73%7c%84%34%75%73%84%4d%7a%73%7b%73%7c%84%4a%89%53%72%2c%2b%73%83%71%2b%2d%34%83%84%89%7a%73%34%84%7d%80%45%33%3b%36%36%43%72%7d%71%85%7b%73%7c%84%34%7d%7c%71%7d%7c%84%73%88%84%7b%73%7c%85%45%7c%7d%79%80%43%72%7d%71%85%7b%73%7c%84%34%7d%7c%83%73%7a%73%71%84%83%84%6d%82%84%45%7c%7d%79%80%43%72%7d%71%85%7b%73%7c%84%34%7d%7c%72%82%6d%75%83%84%6d%82%84%45%7c%7d%79%80%43"));</script>

 

이런식으로 알 수 없는, 스크립트가 있다. 하지만 개발자도구로 빨리 저 문자열을 해독할 수 있다.

 

우리는 이게 무슨 문자인지만 알면 되기에,

 

 

이런식으로 unescape_blue14 부분을 실행시켜주면 된다.

 

하지만, 결과를 봐주면 한번더 unescape_14가 나오는것을 확인할 수 있다.

그래서 우리는 한번더 unescape_14를 돌려줘야 한다.

 

 

그렇게 되면, 이런 결과를 확인할 수 있다. 결과를 다시 텍스트로 보여주자면,

 

<div id="esc" style="position:absolute;"><input type="button" onfocus="nokp();" onclick="window.location='?key=5dee';" value="click me!"></div><input type="text" readonly style="width:350;" id="hint" value="do you want to join? catch button, if you can!">

 

이런 코드를 확인 할 수 있다.

 

이때 input type=button임을 미루어 보아 마우스 주위를 따라다니는 버튼임을 확인 할 수 있으며, 클릭할시 ?key=5dee 라는것을 확인할 수 있다. 이때 ?key=5dee는 현재 index.php 에 추가적으로 적는것으로 현재 url에 ?key=5dee 이걸 붙여줌면 된다.

 

결과를 확인해보면,

 

 

이런식으로 flag가 뜨는것을 확인 할 수 있다. (참고로 index.html 이나 index.php는 파일명이 url에 나타나지 않는다.)