1.奇怪的字符串

密文：89 51 82 109 89 50 86 122 97 71 107 61
對應(yīng)的ascii碼為 Y3RmY2VzaGk=
有=結(jié)尾 試試base64解碼
ctfceshi

2.疑惑的漢字

密文：王夫 井工 夫口 由中人 井中 夫夫 由中大
當鋪密碼 ： 67 84 70 123 82 77 125
轉(zhuǎn)ascii ：CTF{RM}

3.古典密碼

密文：{79 67 85 123 67 70 84 69 76 88 79 85 89 68 69 67 84 78 71 65 72 79 72 82 78 70 73 69 78 77 125 73 79 84 65}

根據(jù)ascii得到：

OCU { CFT
ELXOUYD
ECTNGAH
OHRNFIE
NM } IOTA

列置換2764513得到：

CTF{COU
LDYOUEX
CHANGET
HEINFOR
MATION}

4.困在柵欄里的凱撒

密文：NlEyQd{seft}
先柵欄(6)然后凱撒加密( CTF{tianshu})

5.敵軍情報

密文：45 46 45 46 32 45 32 46 46 45 46 32 46 45 32
摩斯密碼 -.-. - ..-. .-
翻譯：CTFA

6.Fair-Play

The quick brown fox jumps over the lazy dog!
ihxo{smzdodcikmodcismzd}
工具網(wǎng)址：http://rumkin.com/tools/cipher/playfair.php
解出：ctfx{playfairisfairplay}
提示：第一行是key 第二行是密文

7.我喜歡培根

密文：-- --- .-. ... . ..--.- .. ... ..--.- -.-. --- --- .-.. ..--.- -... ..- - ..--.- -... .- -.-. --- -. ..--.- .. ... ..--.- -.-. --- --- .-.. . .-. ..--.- -.. -.-. -.-. -.. -.-. -.-. -.-. -.. -.. -.. -.-. -.. -.-. -.-. -.-. -.. -.. -.-. -.-. -.-. -.-. -.-. -.-. -.-. -.-. -.-. -.. -.. -.-. -.. -.-. -.-. -.-. -.-. -.. -.-. -.-. -.-. -.-. -.-. / -.-. -.. -.-. -.-. -.-. -.. -.-. -.-. -.. -.-. / -.-. -.-. -.-. -.. -.-. -.-. -.. -.. -.. -.-. -.-. -.. -.. -.. -.-. -.-. -.. -.-. -.. -..
解摩斯密碼：
MORSE..--.-IS..--.-COOL..--.-BUT..--.-BACON..--.-IS..--.-COOLER..--.-DCCDCCCDDDCDCCCDDCCCCCCCCCDDCDCCCCDCCCCC/CDCCCDCCDC/CCCDCCDDDCCDDDCCDCDD
解培根：
CTF{SHIYANBA IS COOL}

8.Decode

0x253464253534253435253335253433253661253435253737253464253531253666253738253464253434253637253462253466253534253662253462253464253534253435253738253433253661253435253737253466253531253666253738253464253434253435253462253464253534253435253332253433253661253435253738253464253531253666253738253464253534253535253462253464253534253431253330253433253661253435253737253465253531253666253738253464253661253435253462253466253534253633253462253464253534253435253737253433253661253662253334253433253661253662253333253433253661253435253738253465253431253364253364
16進制數(shù)還原得到：
%4d%54%45%35%43%6a%45%77%4d%51%6f%78%4d%44%67%4b%4f%54%6b%4b%4d%54%45%78%43%6a%45%77%4f%51%6f%78%4d%44%45%4b%4d%54%45%32%43%6a%45%78%4d%51%6f%78%4d%54%55%4b%4d%54%41%30%43%6a%45%77%4e%51%6f%78%4d%6a%45%4b%4f%54%63%4b%4d%54%45%77%43%6a%6b%34%43%6a%6b%33%43%6a%45%78%4e%41%3d%3d
url解碼：
MTE5CjEwMQoxMDgKOTkKMTExCjEwOQoxMDEKMTE2CjExMQoxMTUKMTA0CjEwNQoxMjEKOTcKMTEwCjk4Cjk3CjExNA
base64解碼：
119
101
108
99
111
109
101
116
111
115
104
105
121
97
110
98
97
114
ascii解碼：welcometoshiyanbar

8.凱撒和某某加密

密文：aZZg/x\ZbavpZiEZp+n)o+
先凱撒拍冠。在柵欄(3)
flag{Just_4_fun_0.0}

9.你好兔子

U2FsdGVkX197ihEWFWSF8qzdJ/Y1GS6pieLsbQHFUA==
工具：http://www.sojson.com/encrypt_rabbit.html
sImPle_xUe_yuan

10.他的情書

源碼中找到：
%3Ccenter%3E%0A%0A%3Cp%3E%u4E0D%u96BE%u7684%uFF0C%u8F93%u5165%u5BC6%u7801%u8FA3%21%3C%2fp%3E%0A%0A%3Cscript%20language%3D%22JScript.Encode%22%3E%23@%7E%5EEwAAAA%3D%3DC%5E%2b.D%60rt%2b%5EVKE%23p@%23@%26EwUAAA%3D%3D%5E%23%7E@%0A%0A%3C%21--%0A%09%2f%2f%2a%2a%2a%28%u3065%uFFE3%203%uFFE3%29%u3065%u6211%u8981%u62B1%u62B1%21%21%21%2a%2a%2a%0Aeval%28function%28p%2Ca%2Cc%2Ck%2Ce%2Cd%29%7Be%3Dfunction%28c%29%7Breturn%28c%3Ca%3F%22%22%3Ae%28parseInt%28c%2fa%29%29%29%2b%28%28c%3Dc%25a%29%3E35%3FString.fromCharCode%28c%2b29%29%3Ac.toString%2836%29%29%7D%3Bif%28%21%27%27.replace%28%2f%5E%2f%2CString%29%29%7Bwhile%28c--%29d%5Be%28c%29%5D%3Dk%5Bc%5D%7C%7Ce%28c%29%3Bk%3D%5Bfunction%28e%29%7Breturn%20d%5Be%5D%7D%5D%3Be%3Dfunction%28%29%7Breturn%27%5C%5Cw%2b%27%7D%3Bc%3D1%3B%7D%3Bwhile%28c--%29if%28k%5Bc%5D%29p%3Dp.replace%28new%20RegExp%28%27%5C%5Cb%27%2be%28c%29%2b%27%5C%5Cb%27%2C%27g%27%29%2Ck%5Bc%5D%29%3Breturn%20p%3B%7D%28%27%3C%21--v%20p%28%29%7B6%208%3Dh.o.e.n%3B6%202%3D%22q%3D%3D%22%3B6%20a%3D%5C%27t.s%3Fe%3D%5C%27%3B6%20d%3Dj.r%3B6%20k%3D%5C%27%5C%27%3B6%20g%3D2.9%28m%2C4%2a4%29%2b2.9%28l%2C5%2a5%29%2b2.9%280%2C1%29%2b2.b%287%2C1%29%2b2.b%28z%2C1%29%2b2.b%28B%2C1%29%2b2.9%283%2b3%2C7%29%3B8%3Dd.b%28d.f%28%5C%27%3F%5C%27%29%2b1%29%3Ba%3Da.9%280%2Ca.f%28%5C%27%3F%5C%27%29%2b1%29%2b%5C%27A%3D%5C%27%3Bw%28i%3D0%3Bi%3C8.y%3Bi%2b%2b%29%7Bx%288.c%28i%29%3D%3Dg.c%28i%29%29%7Bh.u%288.c%28i%29%29%7D%7Dj%3Da%2b8%7D--%3E%27%2C38%2C38%2C%27%7C%7Ccry%7C%7C%7C%7Cvar%7C%7Cpass%7Csubstring%7Caddr%7Csubstr%7CcharAt%7Clocatie%7Cpasswd%7CindexOf%7Cpass2%7Cdocument%7C%7Clocation%7Cout%7C24%7C15%7Cvalue%7Cform%7Czhegejiamiyidiandoubuku%7CRm9yM0re354v5E4FUg5FasDboooo%7Chref%7Cphp%7Csoroki%7Cwrite%7Cfunction%7Cfor%7Cif%7CLen%7C11%7Cl0vau%7C13%27.split%28%27%7C%27%29%2C0%2C%7B%7D%29%29%0A--%3E%0A%3C%2fscript%3E%0A%0A%3Cform%20name%3D%22form%22%3E%0APassword%3A%20%3Cinput%20type%3D%22password%22%20name%3D%22passwd%22%3E%20%3Cinput%20type%3D%22button%22%20value%3D%22boom%21%21%21%21%22%20onClick%3D%22zhegejiamiyidiandoubuku%28%29%22%3E%0A%3C%2fform%3E%0A%0A%3C%2fcenter%3E
enescape解密：js代碼解密

function zhegejiamiyidiandoubuku()
{var pass=document.form.passwd.value;
var cry="Rm9yM0re354v5E4FUg5FasDboooo==";
var addr='soroki.php?passwd=';
var locatie=location.href;var out='';

var pass2=cry.substring(15,4*4)+cry.substring(24,5*5)+cry.substring(0,1)+cry.substr(7,1)+cry.substr(11,1)+cry.substr(13,1)+cry.substring(3+3,7);
pass=locatie.substr(locatie.indexOf('?')+1);addr=addr.substring(0,addr.indexOf('?')+1)+'l0vau=';
for(i=0;i<pass.Len;i++)
  {
  if(pass.charAt(i)==pass2.charAt(i))      
           {document.write(pass.charAt(i))}
  }
  location=addr+pass

手動運行的