Original link: https://5ime.cn/qwbqsn-2022.html
This time I lost a big strategy, and the web pulled my crotch
Crypto
crypto1
Without rules, how to analyze it?
Downloaded a bunch of AB
strings, tried bacon, didn’t work, then tried Morse code, got a bunch of English
Let’s run quipqiup
directly to get the flag
Misc
misc1
Do you know what a universal chord is?
There is a png image in the download attachment, but when I open it, the file is damaged. I use Notepad to open it and find that it is a base64 image.
Use CyberChef
decode it and find that the order of the hexadecimal data is reversed. The normal data header should be 89 50 4e 47
, that is, the odd and even bits are exchanged
Convert a script
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get picture
You can directly decrypt the lsb
, and the password can be found by Baidu search universal and spin according to the title description and get 4536251
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misc3
Steganography is a skill and science about information hiding. Steganographic information looks like some other thing. Steganography is different from encryption. understand something. Now, here is some information hidden in the simplest way of steganography, can you find it?
Download the attachment, find a password 7his_1s_p4s5w0rd
at the end of the data, unzip the file to get FindHideMsg.png
After separating FindHideMsg.png
file, a new image secret.png
is obtained and a part is added (the place I circled)
Since it is lsb
steganography, we decrypt it directly with the script
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Web
Web1
CVE-2021-41773 exists, can you get the flag?
Nothing to say, sign in question
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