# Grab your Jisho As the title suggested, I grabbed my Jisho (jisho.org) and pasted the first "word" in. In the side panel I saw 20-8-5 for the stroke numbers, which I immidiately recognised as A1Z26 cipher for 'THE'. The characters were encoded into kanji with an equivalent stroke number. I continued manual decryption until I identified the plaintext as . At this point I wrote a quick script to match kanji to letters 1:1 in one paragraph, and use replace on the whole text. This was much faster, and once I had decrypted 10 or so paragraphs like this grepping for `rgb` yielded the encrypted flag - `璧技丩忄鰏叒讞鸞鸚鱺鑱磒夢洶飳勊淩鼱殆鸝钁厵鬱`. However, some kanji had values above 26. I struggled with this for a while before trying to just extend them on the ASCII table, which worked! ## Flag: rgbctf{\~|\~yominikui\~|\~} (meaning: illegible) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://the-winrars.gitbook.io/writeups/2020-writeups/rgbctf/crypto/grab-your-jisho.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.