BUUCTF misc 专题(31)面具下的flag

打开题目,下载文件

得到了这样的一张图片,先是查看了下它的属性,然后并没有任何的发现,于是就用我们kali的binwalk对它进行分解 

分离出来了这样的两个文件,通过kali的7z解压对其中的zip文件进行解压,解压出来了一个.vmdk格式的文件,将它再次7z解压,分离出来四个文件

这里我看过其他大佬的博客,因为我刚分离出来的时候是四个×,其中我们知道两个带key的文件夹是肯定有东西的,但是打不开。这里就涉及到修改权限的问题了,这里的建议是使用chmod -R 755 文件名 ,这样的格式来修改权限,很多都说使用777,但是对于打开这俩文件来说,755已经够用了,修改之后就能够看到两个×变成了如图所示的两个琐,就可以打开了

 

### BUUCTF Miscellaneous Challenge Flag Solution For solving a BUUCTF miscellaneous challenge and finding the associated flag, one must approach such challenges methodically by understanding the provided materials or context within which the challenge operates. Since specific details about this particular BUUCTF misc challenge are not directly given here, general strategies can be outlined based on common practices in CTF (Capture The Flag) competitions. In many cases, flags for miscellaneous challenges follow certain patterns like `flag{...}` where ellipsis represents some text that needs to be discovered through problem-solving techniques relevant to the task at hand[^1]. Participants often need to apply skills ranging from steganography, cryptography, reverse engineering, to web exploitation depending upon what type of puzzle has been set up by organizers. To solve a miscellaneous challenge effectively: - Carefully read all information provided alongside the question. - Look out for any hidden messages embedded within images, audio files, or documents shared as part of the clue. - Experiment with different tools designed specifically for uncovering concealed data. - Consider how elements might relate back to known algorithms or protocols mentioned either explicitly or implicitly during the description. A concrete example cannot be demonstrated without knowing specifics about the current BUUCTF misc challenge being referred to because each scenario varies greatly in terms of required knowledge areas and methodologies employed. --related problems-- 1. What types of puzzles commonly appear under the category of miscellaneous in CTF events? 2. How does one prepare generally for tackling diverse kinds of challenges found in Capture The Flag contests? 3. Can you provide an overview of popular resources used when attempting to decode obscured communications encountered in CTF games? Note: Direct solutions including actual flags should typically come from participating officially in respective CTF activities rather than external sources so as not to compromise fairness among competitors.
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