> For the complete documentation index, see [llms.txt](https://hawksec.gitbook.io/pt/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hawksec.gitbook.io/pt/writeups/anos/2024/lactf-2024/writeup-6.md).

# one\_by\_one

Challenge description:

![chall](/files/dkZZwPuW8tjwKeyR37jN)

This has the same principle of the infinite loop, we need to see the page source:

![alt text](/files/ftBqTVRk2v8z4ukg66vu)

If we take a closer look we will find a array with all the answers, we used a [website](https://codebeautify.org/c-formatter-beautifier/cb14b18a#) to format the array to make easier to see:

![alt text](/files/JuPJQt8UyJrFNsigyIYg)

You can notice that the letter `l` has a different value than the others, and is the first letter of the flag, so if you follow this logic and get all the letters, you will be able to get the flag:

`lactf{1_by_0n3_by3_un0_*,"g1'}`


---

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