Emoji analysis - Revision history

Exf: /* Tools */

2022-10-17T11:59:09Z

Tools

← Older revision		Revision as of 11:59, 17 October 2022
Line 27:		Line 27:

	===Tools===		===Tools===
	*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html\| Frequency analysis]		*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html Frequency analysis]
	*[https://www.dcode.fr/book-cipher Book cipher]		*[https://www.dcode.fr/book-cipher Book cipher]

	===Flag===		===Flag===
	<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>		<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>
	===Links===		===Links===
	*[[CTF Challenges \| Back to CTF Challenges page]]		*[[CTF Challenges \| Back to CTF Challenges page]]

Exf at 11:59, 17 October 2022

2022-10-17T11:59:03Z

← Older revision		Revision as of 11:59, 17 October 2022
Line 28:		Line 28:
	===Tools===		===Tools===
	*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html\| Frequency analysis]		*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html\| Frequency analysis]
	*[https://www.dcode.fr/book-cipher\| Book cipher]		*[https://www.dcode.fr/book-cipher Book cipher]
	===Flag===		===Flag===
	<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>		<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>
	===Links===		===Links===
	*[[CTF Challenges \| Back to CTF Challenges page]]		*[[CTF Challenges \| Back to CTF Challenges page]]

Exf at 11:58, 17 October 2022

2022-10-17T11:58:42Z

← Older revision		Revision as of 11:58, 17 October 2022
Line 27:		Line 27:

	===Tools===		===Tools===
	*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html \| Frequency analysis]		*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html\| Frequency analysis]
	*[https://www.dcode.fr/book-cipher \| Book cipher]		*[https://www.dcode.fr/book-cipher\| Book cipher]
	===Flag===		===Flag===
	<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>		<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>
	===Links===		===Links===
	*[[CTF Challenges \| Back to CTF Challenges page]]		*[[CTF Challenges \| Back to CTF Challenges page]]

Exf at 11:58, 17 October 2022

2022-10-17T11:58:34Z

← Older revision		Revision as of 11:58, 17 October 2022
Line 27:		Line 27:

	===Tools===		===Tools===
	*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html\|Frequency analysis]		*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html \| Frequency analysis]
	*[https://www.dcode.fr/book-cipher\|Book cipher]		*[https://www.dcode.fr/book-cipher \| Book cipher]
	===Flag===		===Flag===
	<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>		<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>
	===Links===		===Links===
	*[[CTF Challenges \| Back to CTF Challenges page]]		*[[CTF Challenges \| Back to CTF Challenges page]]

Exf at 11:58, 17 October 2022

2022-10-17T11:58:20Z

← Older revision		Revision as of 11:58, 17 October 2022
Line 27:		Line 27:

	===Tools===		===Tools===
	*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html\|~~Frequency~~ Frequency analysis]		*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html\|Frequency analysis]
	*[https://www.dcode.fr/book-cipher\|~~Book~~ Book cipher]		*[https://www.dcode.fr/book-cipher\|Book cipher]
	===Flag===		===Flag===
	<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>		<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>
	===Links===		===Links===
	*[[CTF Challenges \| Back to CTF Challenges page]]		*[[CTF Challenges \| Back to CTF Challenges page]]

Exf: /* Tools */

2022-10-17T11:57:58Z

Tools

← Older revision		Revision as of 11:57, 17 October 2022
Line 27:		Line 27:

	===Tools===		===Tools===
	*[[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html\|Frequency ~~analyzer]~~]		*[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html\|Frequency Frequency analysis]
	*[[https://www.dcode.fr/book-cipher\|Book cipher]]		*[https://www.dcode.fr/book-cipher\|Book Book cipher]
	===Flag===		===Flag===
	<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>		<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>
	===Links===		===Links===
	*[[CTF Challenges \| Back to CTF Challenges page]]		*[[CTF Challenges \| Back to CTF Challenges page]]

Exf at 11:57, 17 October 2022

2022-10-17T11:57:13Z

← Older revision		Revision as of 11:57, 17 October 2022
Line 1:		Line 1:
			[[File:Emoji-task+flag.PNG\|thumb\|Emoji task + flag]]
			[[File:Emojis.PNG\|thumb\|Emojis]]
			[[File:Replace-with-charracters.PNG\|thumb\|Emojis replaced with characters]]
			[[File:Frequency-analysis.PNG\|thumb\|Frequency analysis]]
			[[File:Book-cipher.PNG\|thumb\|Book cipher]]

	===Description===		===Description===
	As a prank your friend modified the text they were supposed to give to you. Figure out a way to solve the substituted text.		As a prank your friend modified the text they were supposed to give to you. Figure out a way to solve the substituted text.

192.168.110.1: Created page with "===Description=== As a prank your friend modified the text they were supposed to give to you. Figure out a way to solve the substituted text. PS! You also find a stiky note4 where was written the following numbers 32 54 80 46 155 100pts ===Question=== Figure out how it was done and capture the flag. ===Solution=== When you open a webpage, you are greeted by a page with a very large number of smileys and a few letters such as M, C and U. I first saved that webpage so..."

2022-10-17T11:53:06Z

Created page with "===Description=== As a prank your friend modified the text they were supposed to give to you. Figure out a way to solve the substituted text. PS! You also find a stiky note4 where was written the following numbers *32 54 80 46 155* 100pts ===Question=== Figure out how it was done and capture the flag. ===Solution=== When you open a webpage, you are greeted by a page with a very large number of smileys and a few letters such as M, C and U. I first saved that webpage so..."

New page

===Description===
As a prank your friend modified the text they were supposed to give to you. Figure out a way to solve the substituted text.

PS! You also find a stiky note4 where was written the following numbers *32 54 80 46 155*

100pts
===Question===
Figure out how it was done and capture the flag.

===Solution===
When you open a webpage, you are greeted by a page with a very large number of smileys and a few letters such as M, C and U.
I first saved that webpage so that I can edit it better with a more powerful editor.

I replaced all the emoticons with letters. Since some of the characters were already given I had to make sure that none of the smileys were replaced by previous characters.
Next, I put the text into the frequency analysis program and started to change the characters, trying to see if the text would be somehow clearer. After a while of rotating the letters I got the right ones replaced and the text became readable.

From the text itself I still have to find the right answer to the task and for this I used the book cipher decoding with the numbers given in the task.

After that I got the correct answer to the task.

===Tools===
*[[https://crypto.interactive-maths.com/frequency-analysis-breaking-the-code.html|Frequency analyzer]]
*[[https://www.dcode.fr/book-cipher|Book cipher]]
===Flag===
<code>LARGE PROGRAMS HAVE MORE INFORMATION</code>
===Links===
*[[CTF Challenges | Back to CTF Challenges page]]