flag

CTF Flag

Submit and validate a CTF flag.

When to Use

Use this command when you:

• Have found or computed a flag for a challenge
• Want to save and validate a flag value
• Need to mark a challenge as solved

Bundled Scripts

• check-tools.sh — Verify ctf-kit is installed

Instructions

1. First verify ctf-kit is available: bash scripts/check-tools.sh

2. Submit the flag:

   ctf flag "$ARGUMENTS"
   

3. Review the output:

   • Flag format validation result
   • Confirmation that flag.txt was saved
   • Challenge marked as solved in .ctf/challenge.yaml

4. After submitting a flag:

   • Suggest /ctf-kit:status to review progress
   • Suggest /ctf-kit:writeup to generate a writeup
   • If in a competition, suggest moving to the next challenge

Options

• --path, -p — Challenge directory (default: current directory)
• --no-validate — Skip flag format validation

Example Usage

/ctf-kit:flag "flag{s0m3_fl4g_h3r3}"
/ctf-kit:flag "picoCTF{example_flag}" --path ./crypto/rsa-baby
/ctf-kit:flag "non_standard_flag" --no-validate

Related Commands

• /ctf-kit:here — Set up challenge context
• /ctf-kit:status — View challenge progress after submission
• /ctf-kit:writeup — Generate writeup for solved challenge