How to Submit a Crackme or Solution to Crackmes.one

Updated

You can submit either a new crackme or a solution (writeup) to Crackmes.one, but only after registering an account. The site states plainly that "If you want to submit a crackme or a solution to one of them, you must register." Before submitting, the site strongly recommends reading the FAQ, and if you have any question about the website or a crackme, you can join the Discord chat.

What you need before submitting

  • A registered account. Submitting is gated behind registration; browsing and downloading are not described as requiring it.
  • Familiarity with the FAQ. The site explicitly recommends reading it before you submit, which is where format and content expectations are most likely covered.
  • A way to ask questions. The Discord chat is the stated channel for questions about the website or a specific crackme.

Submitting a crackme vs. submitting a solution

New crackme Solution / writeup
Account required Yes Yes
Where it starts "upload a new one" link on the homepage The crackme's own page
Purpose Add a challenge for others to solve Document how an existing crackme was solved
Count on site 4,770 crackmes 6,765 writeups

The homepage offers a direct "upload a new one" entry point for crackmes. Solutions attach to an existing crackme rather than standing alone, which is why the writeup count is higher than the crackme count.

Steps

  1. Register or log in. Use the Login / Register links in the site header. Submission is not available without an account.
  2. Read the FAQ first. The site asks you to do this before submitting, so treat it as a prerequisite rather than optional reading.
  3. Choose your submission type.
    • For a new crackme: use the "upload a new one" link on the homepage.
    • For a solution: open the crackme you solved and submit your writeup from there.
  4. Ask in Discord if anything is unclear. The site points to the Discord chat for "any kind of question regarding the website, a crackme."
  5. Check the download password convention. All downloads on the site are password-protected, and the password is crackmes.one. If your submission involves distributing a file, expect that convention to apply.

Common sticking points

  • Trying to submit without registering. This is the single hard blocker stated on the site.
  • Skipping the FAQ. The site calls out the FAQ specifically before submission, so unresolved format questions are better answered there than guessed at.
  • Confusing the two submission types. A crackme is a challenge you create; a solution is a writeup for a challenge someone else created. They are submitted from different places.
  • Forgetting the archive password. Downloads use the password crackmes.one; if your own files are packaged similarly, note it so solvers aren't stuck.

Related things worth knowing

  • Auto-validated crackmes exist as a separate category. Solving them earns points, which suggests a scoring system tied to your account.
  • The Scoreboard is a public ranking, so submissions and solves feed into a visible profile.
  • CTF appears in the site navigation alongside Latest, Scoreboard, FAQ, Discord, and Blog, indicating periodic competitive events on the platform.

The site does not publish pricing information in the material available, so whether any feature is paid is not established here. Registration requirements are stated; payment requirements are not.