Offensive and defensive world scoring record

Novice practice area

1. this_is_flag

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就Ctrl+C Ctrl+V

2.pdf

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Open the attachment, this thing
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can be seen here is a string of text Ctrl+C Ctrl+V
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paste into the notepad to know the flag
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3. Thirteen Palms

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I opened a bunch of traditional Chinese characters in the attachment. At first, I thought it was a new Buddha’s code,
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but I couldn’t decode it. Then I found a code that talks to Buddha and Zen. The decoding
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is correct. Thirteen palms should be ROT13 and
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finally base64.

4.give_you_flag

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Open the attachment, a gif picture,
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use the frame number extractor in StegSolve, this thing appears in the 50th frame,
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use PS to fix the QR code, and then scan it to get the flag
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5. Persist in 60s

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Open the attachment. After opening it, you find that it is a game. If you have that patience, you can play it by yourself for 60 seconds, but it is not easy. Here uses a direct java decompiler tool java decompiler, drag the file into it
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6.gif

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Open the attachment, black and white black and white black and white. . . . Isn’t it 010101?
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Turn white to 0 and black to 1
01100110011011000110000101100111011110110100011001110101010011100101111101100111011010010100011001111101
and then go to the Internet to find a binary conversion to a string
link and attach it to
get the flag
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.

7. Lift the table

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A set of two, converted into binary, and converted into ASCLL code.
Here, use the JPK transcoding
tool link to attach.
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First, convert to seven-bit binary (inradix is ​​16, outradix is ​​2, BitsPerBlock is 7)
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. The code uses 7 digits. And then converted to ASCII code:
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8.ext3

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Download the attachment, why not open it, because this is something that I don’t know what it is. Change the format to zip and
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search for the flag directly in the compressed package. The text of the flag will come out. Just
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use a base64.

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9.stegano

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Open the attachment, pdf file, directly Ctrl+A to select all Ctrl+C to copy, open a notepad Ctrl+V to paste,
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a Morse password
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that looks like a Bacon password appears, change B to -, A to ., Morse decode , Get the flag (the title says to be lowercase, don’t be
pitted ) -.-. — -. --. .-. .--…- .-… .--… — -.… --…-- …- . .-… .- --. —… .---- -. …- .----… .---- -… .-… …-- – …--…… …- --. …–
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10.SimpleRAR

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Open the attachment, there is a txt file inside, and then
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put it into WinHex, here is the secret.png part.
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Baidu checked the rar at the beginning of each block.
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We want the file block instead of the sub-block, so we changed 7A to 74 , Successfully decompressed
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Then open it with WinHex and find it is in gif format, rename it and open it with PS, and find that there are two blank layers.
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Right-click layer 1 and 2, you can export
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the two layers in PDF format to extract the two layers separately, open it with StegSolve, and keep clicking the arrow Until the image is displayed, it’s
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left to rely on your own PS technology.

Currently, this is the question for my novice zone

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Origin blog.csdn.net/weixin_53105784/article/details/115285311