<wargame.kr> fly me to the moon

Wargame/wargame.kr 2021. 10. 21. 11:34

<내가 푼 방법>

컨트롤만 잘하면 되지 않을까 하고 여러 차례 도전했지만, 벽이 점점 좁아졌다.

벽에 닿게 되어 죽으면 "YOU NEED GET THE SCORE 31337"라고 뜨는데, 31337점을 얻어야 되는 것 같다.

페이지 소스 보기를 통해 소스코드를 살펴보겠다.


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<html lang="en">

<head>

  <title>Tunnel: a Javascript &amp; CSS game by Christian Montoya (now with private data!)</title>
  <script type="text/javascript" src="jquery.min.js"></script>
  
  <style type="text/css" media="screen">
    body {
      background:#000;
      color:#fafafa;
      font-family:Consolas, "Bitstream Vera Sans Mono", monospace;
      font-size:16px;
      height:100%;
      margin:0;
      padding:0;
      width:100%;
    }
    a { 
    	color:#fff; 
    }
    fieldset {
      border:none;
    }
    ul {
      margin:10px 0;
      padding:0;
    }
    li {
      margin:0;
      padding:0;
    }
    table {
      margin:8px auto;
    }
    caption {
      margin:0 auto;
    }
    th, td {
      padding:2px 4px;
    }
    th {
      text-align:right;
    }
    td {
      text-align:left;
    }
    #tunnel {
      background:#000 url(pixel-pattern.png) 50% 0;
      border:1px solid #fafafa;
      cursor:crosshair;
      height:500px;
      margin:40px auto 20px;
      position:relative;
      width:500px;
    }
    #info { 
      margin:0 auto 20px;
      width:500px;
      text-align:right;
    }
    #info_score {
      float:left;
    }
    #ship {
      position:absolute;
      top:450px;
      left:234px;
    }
    .left_wall {
      display:none;
      position:absolute;
      top:0;
      left:80px;
    }
    .right_wall {
      display:none;
      position:absolute;
      top:0;
      left:400px;
    }
    .display, .message {
      background:#222;
      color:#fafafa;
      cursor:pointer;cursor:hand;
      display:none;
      font-weight:bold;
      text-align:center;
      text-transform:uppercase;
      width:100%;
      z-index:3;
    }
    .display {
      line-height:1.4;
      padding:14px 0;
      margin-top:28px;
    }
    .message {
      line-height:2.0;
      position:absolute;
      top:50%;
      margin-top:-16px;   
    }
    #welcome {
      z-index:4;
    }
    #game_over {
      padding-top:14px;
      z-index:5;
    }
    #score_table {
      z-index:4;
    }
    #high_score {
      cursor:default;
    }
  </style>
  
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140(){$[58[57]](58[56],62(128){115=128})};',10,176,'||||||||||||||||||||||||||||||||||||||||||||||||||||||||||_0x32bb|x65||x6F|function|x74|x6E|y|x69|x61|x6C|x73|x63|x72|if|this|x68|ship_x|var|x70|x75|return||x67|left_wall|_0x8618x16|x64|x6D|x66|BTunnelGame|right_wall|x6B|x20|x23|x79|true|pos_x|bg_val|t_state|x77|x54|c_w||c_s|c_r|x76|x62|console|new|x2E|_0x8618x3|else|rail_left|x5F|x78|_0x8618x19|updateTunnel|token|_0x8618x6|234|x53|secureGame||document|for|_0x8618x9|x42|500|Math|Array|_0x8618x20|_0x8618x1d|_0x8618x5|_0x8618x7|restartTunnel|_0x8618x8|rail_right|typeof|x4C|400|_0x8618xa|temp|updateToken|_0x8618x4|x49|x28|_0x8618xb|x4D|x3D|showHighScores|x6A|x2D|x29|x4F|x43|initTunnel|x50|x2C|url|success|setTimeout|x44|scoreUpdate|320|data|setInterval|x25|BincScore|470|x30|x35|x26|x45|type|10000|false|_0x8618x2|x58'.split('|'),0,{}))

  </script>
</head>
<body>
  <div id="tunnel">
    <img id="ship" width="32" height="32" alt="A" src="ship.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="left_wall" width="20" height="25" alt="|" src="wall.gif">
    
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    <img class="right_wall" width="20" height="25" alt="|" src="wall.gif">
    
    <p id="welcome" class="message">Click to start.</p>
    <div id='score_table' class='display'>
      <p id='game_over'>Game over. Click to restart.</p>
    </div>
  </div>
  <div id="info">
    <div id="info_score">Score: <span id="score">0</span></div>
    By <a href="http://christianmontoya.net" id="christian">Christian Montoya</a></sub>
  </div>
</body>
</html>

소스코드 중에서

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105){105[58[8]](58[7])};75=117;101=0;102=0;99=0;$(58[28])[58[27]](58[13]+0);$(58[30])[58[15]](58[29],75+58[14]);65=0;122(65=0;65<20;65++){82[65]=80;88[65]=137};$(58[30])[58[32]](58[31]);$(58[19])[58[18]](62(83){65=83*25;$(73)[58[15]](58[12],58[13]+65+58[14]);$(73)[58[15]](58[16],58[17])});$(58[20])[58[18]](62(83){65=83*25;$(73)[58[15]](58[12],58[13]+65+58[14]);$(73)[58[15]](58[16],58[17])})};62 114(){95=95+2;72(95>20){95=0};$(58[35])[58[15]](58[33],58[34]+95+58[14]);72(75+32<125){72(75+46<94){75+=4}109{72(75+16<94){75+=2}}};72(75>0){72(75-14>94){75-=4}109{72(75+16>94){75-=2}}};$(58[30])[58[15]](58[29],75+58[14]);102++;72(102>60){102=0;96=126[58[37]](126[58[36]]()*2)};72(82[0]<10){96=1}109{72(88[0]>166){96=0}};65=0;122(65=20;65>0;65--){82[65]=82[65-1];88[65]=88[65-1]};72(96==0){82[0]-=3};72(96==1){82[0]+=3};88[0]=82[0]+87[58[5]]();$(58[19])[58[18]](62(83){$(73)[58[15]](58[29],58[13]+82[83]+58[14])});$(58[20])[58[18]](62(83){$(73)[58[15]](58[29],58[13]+88[83]+58[14])});72(87[58[5]]()>=120){99++;72(99>100){99=0;87[58[4]]();82[0]+=10}};101++;72(101>20){101=0;87.165();$(58[28])[58[27]](58[13]+87[58[2]]())};72(75<=82[18]+20||75+32>=88[18]){87[58[0]]()};72(87[58[1]]()){158(58[38],10)}109{$(58[30])[58[39]](58[31]);$(58[19])[58[15]](58[16],58[24]);$(58[20])[58[15]](58[16],58[24]);$[58[44]]({171:58[40],156:58[41],162:58[42]+115+58[43]+87[58[2]](),157:62(113){147(113)}})}};62 160(){79};62 147(113){$(58[25])[58[45]](113);$(58[25])[58[15]](58[16],58[17])};$(121)[58[52]](62(){$(58[46])[58[15]](58[16],58[17]);140();163(58[47],172);$(58[46])[58[26]](62(){$(58[46])[58[15]](58[16],58[24]);153();114()});$(58[50])[58[49]](62(){$(73)[58[45]](58[48])});$(58[50])[58[51]](62(){$(73)[58[45]](139)})});76 139=58[53];$(121)[58[55]](62(129){94=129[58[54]]-110});76 115=58[13];62 140(){$[58[57]](58[56],62(128){115=128})};',10,176,'||||||||||||||||||||||||||||||||||||||||||||||||||||||||||_0x32bb|x65||x6F|function|x74|x6E|y|x69|x61|x6C|x73|x63|x72|if|this|x68|ship_x|var|x70|x75|return||x67|left_wall|_0x8618x16|x64|x6D|x66|BTunnelGame|right_wall|x6B|x20|x23|x79|true|pos_x|bg_val|t_state|x77|x54|c_w||c_s|c_r|x76|x62|console|new|x2E|_0x8618x3|else|rail_left|x5F|x78|_0x8618x19|updateTunnel|token|_0x8618x6|234|x53|secureGame||document|for|_0x8618x9|x42|500|Math|Array|_0x8618x20|_0x8618x1d|_0x8618x5|_0x8618x7|restartTunnel|_0x8618x8|rail_right|typeof|x4C|400|_0x8618xa|temp|updateToken|_0x8618x4|x49|x28|_0x8618xb|x4D|x3D|showHighScores|x6A|x2D|x29|x4F|x43|initTunnel|x50|x2C|url|success|setTimeout|x44|scoreUpdate|320|data|setInterval|x25|BincScore|470|x30|x35|x26|x45|type|10000|false|_0x8618x2|x58'.split('|'),0,{}))

이 스크립트 부분을 살펴볼 수 있다. 이 상태로는 도저히 이해할 수가 없다.

JavaScript는 이와 같이 난독화 기능을 지원한다.

난독화란? 사용자(Client)가 웹사이트에 접근하게 되면 해당 스크립트를 그대로 볼 수 있는 것을 방지한다.

따라서 난독화를 해제하면 이해할 수 있는 코드를 얻을 수 있다.

난독화 해제 사이트를 통해 위 코드를 풀어보면

function secureGame() {
    var _0x8618x2 = this;
    var _0x8618x3 = true;

    function _0x8618x4() {
        _0x8618x3 = false;
        return true
    };

    function _0x8618x5() {
        return _0x8618x3
    };
    this['killPlayer'] = function() {
        _0x8618x4();
        return true
    };
    this['checkLife'] = function() {
        return _0x8618x5()
    };
    var _0x8618x6 = 0;

    function _0x8618x7() {
        return _0x8618x6
    };

    function _0x8618x8() {
        if (_0x8618x3) {
            _0x8618x6++
        };
        return true
    };
    this['getScore'] = function() {
        return _0x8618x7()
    };
    this['BincScore'] = function() {
        _0x8618x8();
        return true
    };
    var _0x8618x9 = 320;

    function _0x8618xa() {
        _0x8618x9 -= 20;
        return true
    };

    function _0x8618xb() {
        return _0x8618x9
    };
    this['shrinkTunnel'] = function() {
        _0x8618xa();
        return true
    };
    this['widthTunnel'] = function() {
        return _0x8618xb()
    }
};
var bg_val = 0;
var rail_left = 0;
var rail_right = 500;
var ship_x = 234;
var pos_x = 234;
var c_s = 0;
var c_r = 0;
var c_w = 0;
var t_state = 0;
left_wall = new Array(20);
right_wall = new Array(20);

function initTunnel() {
    BTunnelGame = new secureGame();
    if ('object' == typeof console) {
        console['warn']('Do cheating, if you can')
    };
    rail_left = document['getElementById']('tunnel')['offsetLeft'];
    rail_right += rail_left;
    y = 0;
    for (y = 0; y < 20; y++) {
        left_wall[y] = 80;
        right_wall[y] = 400
    };
    $('img.left_wall')['each'](function(_0x8618x16) {
        y = _0x8618x16 * 25;
        $(this)['css']('top', '' + y + 'px');
        $(this)['css']('display', 'block')
    });
    $('img.right_wall')['each'](function(_0x8618x16) {
        y = _0x8618x16 * 25;
        $(this)['css']('top', '' + y + 'px');
        $(this)['css']('display', 'block')
    });
    $('div#score_table')['click'](function() {
        $('table')['remove']('#high_scores');
        $('div#score_table')['css']('display', 'none');
        restartTunnel();
        updateTunnel()
    })
};

function restartTunnel() {
    BTunnelGame = new secureGame();
    if ('object' == typeof console) {
        console['warn']('Do cheating, if you can')
    };
    ship_x = 234;
    c_s = 0;
    c_r = 0;
    c_w = 0;
    $('span#score')['text']('' + 0);
    $('img#ship')['css']('left', ship_x + 'px');
    y = 0;
    for (y = 0; y < 20; y++) {
        left_wall[y] = 80;
        right_wall[y] = 400
    };
    $('img#ship')['fadeIn']('slow');
    $('img.left_wall')['each'](function(_0x8618x16) {
        y = _0x8618x16 * 25;
        $(this)['css']('top', '' + y + 'px');
        $(this)['css']('display', 'block')
    });
    $('img.right_wall')['each'](function(_0x8618x16) {
        y = _0x8618x16 * 25;
        $(this)['css']('top', '' + y + 'px');
        $(this)['css']('display', 'block')
    })
};

function updateTunnel() {
    bg_val = bg_val + 2;
    if (bg_val > 20) {
        bg_val = 0
    };
    $('div#tunnel')['css']('background-position', '50% ' + bg_val + 'px');
    if (ship_x + 32 < 500) {
        if (ship_x + 46 < pos_x) {
            ship_x += 4
        } else {
            if (ship_x + 16 < pos_x) {
                ship_x += 2
            }
        }
    };
    if (ship_x > 0) {
        if (ship_x - 14 > pos_x) {
            ship_x -= 4
        } else {
            if (ship_x + 16 > pos_x) {
                ship_x -= 2
            }
        }
    };
    $('img#ship')['css']('left', ship_x + 'px');
    c_r++;
    if (c_r > 60) {
        c_r = 0;
        t_state = Math['floor'](Math['random']() * 2)
    };
    if (left_wall[0] < 10) {
        t_state = 1
    } else {
        if (right_wall[0] > 470) {
            t_state = 0
        }
    };
    y = 0;
    for (y = 20; y > 0; y--) {
        left_wall[y] = left_wall[y - 1];
        right_wall[y] = right_wall[y - 1]
    };
    if (t_state == 0) {
        left_wall[0] -= 3
    };
    if (t_state == 1) {
        left_wall[0] += 3
    };
    right_wall[0] = left_wall[0] + BTunnelGame['widthTunnel']();
    $('img.left_wall')['each'](function(_0x8618x16) {
        $(this)['css']('left', '' + left_wall[_0x8618x16] + 'px')
    });
    $('img.right_wall')['each'](function(_0x8618x16) {
        $(this)['css']('left', '' + right_wall[_0x8618x16] + 'px')
    });
    if (BTunnelGame['widthTunnel']() >= 120) {
        c_w++;
        if (c_w > 100) {
            c_w = 0;
            BTunnelGame['shrinkTunnel']();
            left_wall[0] += 10
        }
    };
    c_s++;
    if (c_s > 20) {
        c_s = 0;
        BTunnelGame.BincScore();
        $('span#score')['text']('' + BTunnelGame['getScore']())
    };
    if (ship_x <= left_wall[18] + 20 || ship_x + 32 >= right_wall[18]) {
        BTunnelGame['killPlayer']()
    };
    if (BTunnelGame['checkLife']()) {
        setTimeout('updateTunnel()', 10)
    } else {
        $('img#ship')['fadeOut']('slow');
        $('img.left_wall')['css']('display', 'none');
        $('img.right_wall')['css']('display', 'none');
        $['ajax']({
            type: 'POST',
            url: 'high-scores.php',
            data: 'token=' + token + '&score=' + BTunnelGame['getScore'](),
            success: function(_0x8618x19) {
                showHighScores(_0x8618x19)
            }
        })
    }
};

function scoreUpdate() {
    return
};

function showHighScores(_0x8618x19) {
    $('div#score_table')['html'](_0x8618x19);
    $('div#score_table')['css']('display', 'block')
};
$(document)['ready'](function() {
    $('p#welcome')['css']('display', 'block');
    updateToken();
    setInterval('updateToken()', 10000);
    $('p#welcome')['click'](function() {
        $('p#welcome')['css']('display', 'none');
        initTunnel();
        updateTunnel()
    });
    $('#christian')['mouseover'](function() {
        $(this)['html']('thx, Christian Montoya')
    });
    $('#christian')['mouseout'](function() {
        $(this)['html'](temp)
    })
});
var temp = 'Christian Montoya';
$(document)['mousemove'](function(_0x8618x1d) {
    pos_x = _0x8618x1d['pageX'] - rail_left
});
var token = '';

function updateToken() {
    $['get']('token.php', function(_0x8618x20) {
        token = _0x8618x20
    })
};

우리가 필요한 부분은 31337점을 획득하는 것이다.

위 코드를 살펴보면

this['getScore'] = function() {
        return _0x8618x7()
    };

부분을 찾을 수 있다.

위 함수에 따라 _0x8618x7()로 가보면

function _0x8618x7() {
        return _0x8618x6
    };

그리고 다시 _0x8618x6()로 가게 된다.

var _0x8618x6 = 0;

_0x8618x6은 하나의 변수로, 점수를 나타내는 것 같다.

0을 우리가 얻어야 하는 점수 31337로 바꾸고, 난독화가 풀린 소스코드를 복사하여

문제 창의 개발자 도구(F12)의 Console창에 입력한다.

그리고 다시 게임을 진행해보면 인증 키 값을 얻을 수 있다.

저작자표시

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