> For the complete documentation index, see [llms.txt](https://elijahchia.gitbook.io/ctf-blog/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://elijahchia.gitbook.io/ctf-blog/wargames.my-ctf-2024/credentials-crypto.md).

# Credentials (crypto)

<figure><img src="https://243380073-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FBIa0PcXGYuP6chd3J1Ry%2Fuploads%2Fuwp9Hyg6wOzKpV7uM38u%2Fimage.png?alt=media&amp;token=600cb128-2679-4899-a6d7-e86092410c31" alt="" width="331"><figcaption></figcaption></figure>

We are given two files: `user.txt` and `password.txt`, and need to decode the password of the user `osman`. Upon looking at the password file, the encoded password is `ZJPB{e6g180g9f302g8d8gddg1i2174d0e212}` which is clearly a Caesar cipher since the flag format is `WGMY{...}`. Throwing into cyberchef vignere decode with key 'd' gives the flag: `WGMY{b6d180d9c302d8a8daad1f2174a0b212}`