Macbeth

April 18 2017

#ctf #docx #forensics #stegno #zip

Find the flag.

Flag Format /flag:[a-zA-Z]+/

Hint : Not all characters are created equal.

Solution

Opening the file we can quickly tell that the entire file has been written in two fonts. We unzip the docx file, and grep the part we are interested in.

$ unzip Macbeth.docx

$ grep "Bitstream Vera Sans Mono\"/></w:rPr><w:t>\(.\)<" document.xml -o
Bitstream Vera Sans Mono"/></w:rPr><w:t>F<
Bitstream Vera Sans Mono"/></w:rPr><w:t>l<
Bitstream Vera Sans Mono"/></w:rPr><w:t>a<
Bitstream Vera Sans Mono"/></w:rPr><w:t>g<
Bitstream Vera Sans Mono"/></w:rPr><w:t>:<
Bitstream Vera Sans Mono"/></w:rPr><w:t>F<
Bitstream Vera Sans Mono"/></w:rPr><w:t>u<
Bitstream Vera Sans Mono"/></w:rPr><w:t>c<
Bitstream Vera Sans Mono"/></w:rPr><w:t>k<
Bitstream Vera Sans Mono"/></w:rPr><w:t>e<
Bitstream Vera Sans Mono"/></w:rPr><w:t>d<
Bitstream Vera Sans Mono"/></w:rPr><w:t>U<
Bitstream Vera Sans Mono"/></w:rPr><w:t>p<
Bitstream Vera Sans Mono"/></w:rPr><w:t>F<
Bitstream Vera Sans Mono"/></w:rPr><w:t>o<
Bitstream Vera Sans Mono"/></w:rPr><w:t>r<
Bitstream Vera Sans Mono"/></w:rPr><w:t>e<
Bitstream Vera Sans Mono"/></w:rPr><w:t>n<
Bitstream Vera Sans Mono"/></w:rPr><w:t>s<
Bitstream Vera Sans Mono"/></w:rPr><w:t>i<
Bitstream Vera Sans Mono"/></w:rPr><w:t>c<
Bitstream Vera Sans Mono"/></w:rPr><w:t>s<

That gives us our flag.

Flag

FuckedUpForensics

Parth Kolekar

Boring Assignment

#crypto #ctf #forensics #python

There was once a guy, who hadn’t anything to do. So he made haiku.

CTF question, related to cryptography, he presents to you.

Solve you can or not, you must at least try or else, you disappoint him.

Flag Format : /FLAG[A-Z]+/

Provided boring...

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Timing Attack

#ctf #introductory #misc #web

Once upon a time, there was a programmer. His name was Anshul. He did not know how to work with passwords. His friend Animesh took this opportunity to do jugaad and guess the passwords so that he is able to order a lot of free shirts from MustCapture...

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