练习题WP4"/>
CTF练习题WP4
17、萌新_隐写2-ctfshow
下载完之后是一个解压包,解压的时候发现需要密码,放入010中发现是真加密,改后缀为文档发现也不行,于是进行暴力破解(Advanced暴力破解发现不行,就改用Ziperello)
选择暴力破解同时只勾选数字类型
得到密码:19981000
最后用密码打开文本即可获得flag
18、萌新_隐写4
题目:
打开后是一张存在在文档中的图片
做法:
直接ctrl+A,再ctrl+v到一个聊天框(如QQ),就能看到flag了
19、ctfshow——萌新密码4
题目:
由题目提示可知,本题需要用到比base64还大的base,即base85、base91等(优先尝试base85),但由于题目所给内容为base64的编码,所以要优先进行base64的解码
进行base85位解码的时候发现无法解码,去网上找大佬的wp后才可知,“&It;”在html中的转义为“<”,因此需将“&It;”改为“<”,即“Ao(mgHX^E)ARAnTF(J]f@<6".”
最后进行Base85的解码解出flag
20、ctfshow-萌新--杂项4
题目:
下载获得个压缩包,发现压缩包为加密状态,放入010修改无效后猜测是真加密,于是直接用暴力破解工具进行破解,这里用Ziperello进行暴力破解
得到密码也就得到了flag
21、ctfshow-萌新--杂项5
题目:
放入010查看发现了一串文本内容,于是直接改文件后缀为“.txt”
经过观察发现了文本中特殊的地方(均已标注为高亮)
i was always Fond of visiting new scenes, and observing strange characters and manners. even when a mere chiLd i began my travels, and made mAny tours of discovery into foreiGn {parts and unknown regions of my native City, to the frequent alarm of my parents, and The emolument of the town-crier. as i grew into boyhood, i extended the range oF my obServations. my holiday afternoons were spent in rambles about tHe surrounding cOuntry. i made myself familiar With all its places famous in history or fable. i kNew every spot where a murder or robbery had been committed, or a ghost seen. i visited the neighboring villages, and added greatly to my stock of knowledge,By noting their habits and customs, and conversing with their sages and great men.}
文本中有“{}”的符号,而且还有很多不符合英语规则的大写字母,于是猜测全文的大写字母组合起来就是flag
FLAG{CTFSHOWNB}
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