idf-ctf-Kind Answer Note

Title Link: http://ctf.idf.cn/index.php?g=game&m=list&a=index&id=16

1. The password that was incorrectly changed

Once there was a bear child invaded a Web site database, found the administrator password, hand shake in the database modified a bit, now the password into a cca9cc444e64c8116a30la00559c042b4, the bear child is actually me! swelling do solve! Online, etc., very urgent.
PS: Answer format wctf{admin original password}

Idea: The password to look like the format is MD5 encryption, the length of 33 bits, and MD5 after the length of the encryption should be 32-bit, bear children should be hands are added one, so try to delete a MD5 decryption, until you can get the decryption results, IDF

2. What?

Idea: Drag the picture to Winhex to see a bit of it, in fact, with vim better, can see Chinese characters ...
"Yes, the answer is wctf{mianwubiaoqing__} and remember, the name of the person who has the quiz is the one who is omnipotent."

3.ascii yards.

Idea: Unicode decoding

 import  Unicodedata Unicodedata.normalize ( ' NFKD ' ,  ' \u5927\u5bb6\u597d\uff0c\u6211\u662f\u0040\u65e0\u6240\u4e0d\u80fd\u7684\u9b42\u5927\u4eba\uff01\u8bdd\u8bf4 \u5fae\u535a\u7c89\u4e1d\u8fc7\u767e\u771f\u7684\u597d\u96be\u3002\u3002\u0077\u0063\u0074\u0066\u007b\u006d\ U006f\u0072\u0065\u006d\u006f\u0072\u0065\u005f\u0077\u0065\u0069\u0062\u006f\u005f\u0066\u0061\u006e\u0073\ U007d ' )  

After decoding: ' Hello everyone, I am the soul of the Almighty! It's hard to say that Weibo fans are really good. Wctf{moremore_weibo_fans} '

4. Morse code

Tick ticking, it keeps turning.
— —- .-. ... .
Ticking, ticking, it's splashing.
-.-. —- -.. .
PS: The answer format wctf{you know}

Idea: Search for Morse code, then translate it is Morse code, but the answer to lowercase ...

5. The clever lamb

A little lamb jumped over the fence, two samples jumped over the fence, a lump of lamb jumped over the fence ...
TN c0afsiwal kes,hwit1r G,NPT ttessfu}ua u hmqik e {m, n Huiouosarwcniibecesnren.

Idea: fence password, including spaces, the above character length is 85=17x5, you can try to group the case of 17 and 5 respectively

s =' tn c0afsiwal kes,hwit1r g,npt ttessfu}ua u hmqik e {m, n huiouosarwcniibecesnren. 't ="'n = -m = Int (len (s)/n) forIinchRange (N): forJinchRange (m): T + = s[i+j*n] Print (t)

After decryption: ' The anwser is Wctf{c01umnar},if U's a big new,u can help us think more question,tks. '

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idf-ctf-Kind Answer Note