AAEncode 实现加密和解密算法
因为要参加CTF比赛， 遇到AAEncode 加密和解密的题目，目前来说有三种解决方法。
- 直接通过在线解密，网站很多，百度即可，但是比赛要求离线，这个基本废了。
- 通过浏览器开发者工具将加密代码进行解密，可以，但是只能解密不能加密。
- 自己搭建Apache + PHP + ZendEngel 然后写PHP脚本来实现，我这里就是这种方法。
首先 AAEnDeCode.php 主要进行解密加密算法。
$b = [
"(c^_^o)",
"(ﾟΘﾟ)",
"((o^_^o) - (ﾟΘﾟ))",
"(o^_^o)",
"(ﾟｰﾟ)",
"((ﾟｰﾟ) + (ﾟΘﾟ))",
"((o^_^o) +(o^_^o))",
"((ﾟｰﾟ) + (o^_^o))",
"((ﾟｰﾟ) + (ﾟｰﾟ))",
"((ﾟｰﾟ) + (ﾟｰﾟ) + (ﾟΘﾟ))",
"(ﾟДﾟ) .ﾟωﾟﾉ",
"(ﾟДﾟ) .ﾟΘﾟﾉ",
"(ﾟДﾟ) ['c']",
"(ﾟДﾟ) .ﾟｰﾟﾉ",
"(ﾟДﾟ) .ﾟДﾟﾉ",
"(ﾟДﾟ) [ﾟΘﾟ]"
];
function charCodeAt($str, $index)
{
$char = mb_substr($str, $index, 1, 'UTF-8');
if (mb_check_encoding($char, 'UTF-8'))
{
$ret = mb_convert_encoding($char, 'UTF-32BE', 'UTF-8');
return hexdec(bin2hex($ret));
}
else
{
return null;
}
}
function uchr ($codes) {
if (is_scalar($codes)) $codes= func_get_args();
$str= '';
foreach ($codes as $code){
$buf = html_entity_decode('&#'.$code.';',ENT_NOQUOTES,'UTF-8');
$buf == '&#'.$code.';' && ($buf = mb_convert_encoding('&#' . intval($code) . ';', 'UTF-8', 'HTML-ENTITIES'));
$str.= $buf;
}
return $str;
}
function aaencode($text)
{
global $b;
$r = "ﾟωﾟﾉ= /｀ｍ´）ﾉ ~┻━┻ //*´∇｀*/ ['_']; o=(ﾟｰﾟ) =_=3; c=(ﾟΘﾟ) =(ﾟｰﾟ)-(ﾟｰﾟ); ";
if(preg_match('/ひだまりスケッチ×(365|３５６)\s*来週も見てくださいね[!！]/', $text)){
$r .= "X=_=3; ";
$r .= "\r\n\r\n X / _ / X < \"来週も見てくださいね!\";\r\n\r\n";
}
$r .= "(ﾟДﾟ) =(ﾟΘﾟ)= (o^_^o)/ (o^_^o);".
"(ﾟДﾟ)={ﾟΘﾟ: '_' ,ﾟωﾟﾉ : ((ﾟωﾟﾉ==3) +'_') [ﾟΘﾟ] ".
",ﾟｰﾟﾉ :(ﾟωﾟﾉ+ '_')[o^_^o -(ﾟΘﾟ)] ".
",ﾟДﾟﾉ:((ﾟｰﾟ==3) +'_')[ﾟｰﾟ] }; (ﾟДﾟ) [ﾟΘﾟ] =((ﾟωﾟﾉ==3) +'_') [c^_^o];".
"(ﾟДﾟ) ['c'] = ((ﾟДﾟ)+'_') [ (ﾟｰﾟ)+(ﾟｰﾟ)-(ﾟΘﾟ) ];".
"(ﾟДﾟ) ['o'] = ((ﾟДﾟ)+'_') [ﾟΘﾟ];".
"(ﾟoﾟ)=(ﾟДﾟ) ['c']+(ﾟДﾟ) ['o']+(ﾟωﾟﾉ +'_')[ﾟΘﾟ]+ ((ﾟωﾟﾉ==3) +'_') [ﾟｰﾟ] + ".
"((ﾟДﾟ) +'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ ((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+".
"((ﾟｰﾟ==3) +'_') [(ﾟｰﾟ) - (ﾟΘﾟ)]+(ﾟДﾟ) ['c']+".
"((ﾟДﾟ)+'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ (ﾟДﾟ) ['o']+".
"((ﾟｰﾟ==3) +'_') [ﾟΘﾟ];(ﾟДﾟ) ['_'] =(o^_^o) [ﾟoﾟ] [ﾟoﾟ];".
"(ﾟεﾟ)=((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟДﾟ) .ﾟДﾟﾉ+".
"((ﾟДﾟ)+'_') [(ﾟｰﾟ) + (ﾟｰﾟ)]+((ﾟｰﾟ==3) +'_') [o^_^o -ﾟΘﾟ]+".
"((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟωﾟﾉ +'_') [ﾟΘﾟ]; ".
"(ﾟｰﾟ)+=(ﾟΘﾟ); (ﾟДﾟ)[ﾟεﾟ]='\\\\'; ".
"(ﾟДﾟ).ﾟΘﾟﾉ=(ﾟДﾟ+ ﾟｰﾟ)[o^_^o -(ﾟΘﾟ)];".
"(oﾟｰﾟo)=(ﾟωﾟﾉ +'_')[c^_^o];".
"(ﾟДﾟ) [ﾟoﾟ]='\\\"';".
"(ﾟДﾟ) ['_'] ( (ﾟДﾟ) ['_'] (ﾟεﾟ+";
$r .= "(ﾟДﾟ)[ﾟoﾟ]+ ";
for( $i = 0; $i < mb_strlen($text); $i++ ){
$n = charCodeAt($text,$i);
$t = "(ﾟДﾟ)[ﾟεﾟ]+";
if( $n <= 127 ){
$t .= preg_replace_callback('/[0-7]/', function($c)use ($b){
return $b[$c[0]]."+ ";
}, ((string)decoct($n)));
}else{
if(preg_match('/[0-9a-f]{4}$/', '000'.((string)dechex($n)),$result)){
$m = $result[0];
}else{
$m = '';
}
$t .= "(oﾟｰﾟo)+ " . preg_replace_callback('/[0-9a-f]/i',function($c)use ($b){
return $b[ hexdec($c[0]) ] . "+ ";
},$m);
}
$r .= $t;
}
$r .= "(ﾟДﾟ)[ﾟoﾟ]) (ﾟΘﾟ)) ('_');";
return $r;
}
function aadecode($text){
global $b;
$text = strtr($text, ["(ﾟДﾟ)[ﾟoﾟ]) (ﾟΘﾟ)) ('_');" => '']);
for($i=0;$i<count($b);$i++){
$buf = $b[$i];
if($i <=7){
//8进制逆向
$str = (($i));
$text = strtr($text, [$buf."+ "=>$str]);
}else{
//16进制逆向
$text = strtr($text, [$buf."+ " => dechex($i)]);
}
}
$text = preg_replace_callback('/\(ﾟДﾟ\)\[ﾟεﾟ\]\+(\d+)/', function($c){
return uchr(octdec($c[1]));
}, $text);
$text = preg_replace_callback('/\(ﾟДﾟ\)\[ﾟεﾟ\]\+\(oﾟｰﾟo\)\+\s+([0-9a-f]{4})/', function($c){
return uchr(hexdec($c[1]));
}, $text);
$pre = [
"ﾟωﾟﾉ= /｀ｍ´）ﾉ ~┻━┻ //*´∇｀*/ ['_']; o=(ﾟｰﾟ) =_=3; c=(ﾟΘﾟ) =(ﾟｰﾟ)-(ﾟｰﾟ); ",
"X=_=3; ",
"\r\n\r\n X / _ / X < \"来週も見てくださいね!\";\r\n\r\n",
"(ﾟДﾟ) =(ﾟΘﾟ)= (o^_^o)/ (o^_^o);",
"(ﾟДﾟ)={ﾟΘﾟ: '_' ,ﾟωﾟﾉ : ((ﾟωﾟﾉ==3) +'_') [ﾟΘﾟ] ",
",ﾟｰﾟﾉ :(ﾟωﾟﾉ+ '_')[o^_^o -(ﾟΘﾟ)] ",
",ﾟДﾟﾉ:((ﾟｰﾟ==3) +'_')[ﾟｰﾟ] }; (ﾟДﾟ) [ﾟΘﾟ] =((ﾟωﾟﾉ==3) +'_') [c^_^o];",
"(ﾟДﾟ) ['c'] = ((ﾟДﾟ)+'_') [ (ﾟｰﾟ)+(ﾟｰﾟ)-(ﾟΘﾟ) ];",
"(ﾟДﾟ) ['o'] = ((ﾟДﾟ)+'_') [ﾟΘﾟ];",
"(ﾟoﾟ)=(ﾟДﾟ) ['c']+(ﾟДﾟ) ['o']+(ﾟωﾟﾉ +'_')[ﾟΘﾟ]+ ((ﾟωﾟﾉ==3) +'_') [ﾟｰﾟ] + ",
"((ﾟДﾟ) +'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ ((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+",
"((ﾟｰﾟ==3) +'_') [(ﾟｰﾟ) - (ﾟΘﾟ)]+(ﾟДﾟ) ['c']+",
"((ﾟДﾟ)+'_') [(ﾟｰﾟ)+(ﾟｰﾟ)]+ (ﾟДﾟ) ['o']+",
"((ﾟｰﾟ==3) +'_') [ﾟΘﾟ];(ﾟДﾟ) ['_'] =(o^_^o) [ﾟoﾟ] [ﾟoﾟ];",
"(ﾟεﾟ)=((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟДﾟ) .ﾟДﾟﾉ+",
"((ﾟДﾟ)+'_') [(ﾟｰﾟ) + (ﾟｰﾟ)]+((ﾟｰﾟ==3) +'_') [o^_^o -ﾟΘﾟ]+",
"((ﾟｰﾟ==3) +'_') [ﾟΘﾟ]+ (ﾟωﾟﾉ +'_') [ﾟΘﾟ]; ",
"(ﾟｰﾟ)+=(ﾟΘﾟ); (ﾟДﾟ)[ﾟεﾟ]='\\\\'; ",
"(ﾟДﾟ).ﾟΘﾟﾉ=(ﾟДﾟ+ ﾟｰﾟ)[o^_^o -(ﾟΘﾟ)];",
"(oﾟｰﾟo)=(ﾟωﾟﾉ +'_')[c^_^o];",
"(ﾟДﾟ) [ﾟoﾟ]='\\\"';",
"(ﾟДﾟ) ['_'] ( (ﾟДﾟ) ['_'] (ﾟεﾟ+",
"(ﾟДﾟ)[ﾟoﾟ]+ ",
];
$rA = [];
foreach($pre as $val){
$rA[$val] = '';
}
$text = strtr($text,$rA);
return $text;
}
?>
然后调用方法：
include_once 'AAEnDeCode.php';
if($_POST['type']=="Encode")
{
echo aaencode($_POST['inputstr']);
}
if($_POST['type']=='Decode')
{
echo aadecode($_POST['inputstr']);
}
前台通过一个 标签，通过ajax 提交
function SubmitForm(type)
{
$.ajax({
type: "POST",
url: "Submit.php",
data: {type:type, inputstr:$("#Source").val()},
dataType: "text",
success: function(data)
{
$("#Source").val(data);
}
});
}
html 代码： 注意引入 jquery-1.8.0.min.js 库
<form id="EncodeForm" >
<div style="margin:0;">
<h3>AAEncode加密解密 离线使用-支持中文汉字h3>
<textarea id="Source" style="width:100%;height:550px">textarea>
<div class="buttondiv">
<input type="button" value="加密" onclick='SubmitForm("Encode")' /><input type="button" value="解密" onclick='SubmitForm("Decode")' />
div>
div>
form>
实现：本地环境 http://localhost
点击加密：
然后点击解密，恢复明文
O 了 ， 然后就可以 http://localhost 跑脚本了。不怕没有网络。