picoCTF

Forensics

Glory of the Garden

What is a hex editor?

根据hint，拖进winhex，最后可得flag.

shark on wire 1

shark on wire 1

Try using a tool like Wireshark;What are streams?

追踪UDP流，得flag。（MISC-AboutWireshark.md里编写了类似的思路）

extensions

extensions

How do operating systems know what kind of file it is? (It’s not just the ending!Make sure to submit the flag as picoCTF{XXXXX}

直接打开是一txt文件，观察可指为png的文件格式，更改后缀名可得flag.

So Meta

What does meta mean in the context of files?Ever heard of metadata?

同第一题，Winhex打开搜索关键词得flag.

What Lies Within

There is data encoded somewhere… there might be an online decoder.

图片隐写在线网站可得，工具get

WhitePages

WhitePages

I stopped using YellowPages and moved onto WhitePages… but the page they gave me is all blank!

#coding=utf-8
text='                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                '
firstType = ' '
secondType =  ' '
binaryString = ''for char in text: #Foreach charif char == firstType: #Check if it is the first typebinaryString += '0' #Mark it as 0else:binaryString += '1' #Mark it as 1print(binaryString) #Print result

m00nwalk

m00nwalk2

MISC-audio.md 中有提及。

like1000

[like1000](This .tar file got tarred a lot.)

Try and script this, it’ll save you a lot of time

import tarfile
for i in range(1000,1,-1):filename=str(i)+'.tar'tar=tarfile.open(filename)tar.extractall()tar.close

WebNet0
学到一招，更新在（MISC-AboutWireshark.md 中）

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Forensics

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