Cyrene
ae50acfe40
Passwords failed on 10/16 challenges while state.json looked correct:
- only the 6 native GEMASTIK XVIII images provision 'ctfuser'; every imported
XVI/XVII image does 'echo root:${PASSWORD} | chpasswd' and logs in as root.
set_ssh_passwords() hardcoded ctfuser, so chpasswd set a password on an
account nobody uses -> 'Permission denied' everywhere.
Registry gains a per-challenge 'ssh_user'; chpasswd now targets the real
login (and ctfuser/ctf when present) and reports failures loudly.
- phew checker: chall.py block-buffers stdout through the docker exec pipe
(PYTHONUNBUFFERED now set) and leaks chall.py inside the container on
timeout (26 orphans, container saturated) -> reaps the whole exec process
group. Startup does a fresh Pailier keygen (~12 s) so crypto reads need
_CRYPTO_TIMEOUT, not the 5 s prompt default.
Adds panel/verify_ssh_creds.py (proves the state->container binding from
inside via a real login), audit_ssh_users.sh, reset_runtime.sh.
39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
from .Challenge import Challenge
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import requests
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import os
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MOCK_URL = 'http://google.com'
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MOCK_DATA = '<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">'
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class Crawlback(Challenge):
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flag_location = 'flags/crawlback.txt'
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history_location = 'history/crawlback.txt'
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def distribute(self, flag):
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try:
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with open(self.flag_location, 'w') as f:
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f.write(flag)
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with open(self.history_location, 'a') as f:
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f.write(flag + '\n')
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self.logger.info(f'Flag {flag} written to {self.flag_location}')
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return True
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except Exception as e:
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self.logger.error(f'Could not write flag to {self.flag_location}: {e}')
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return False
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def check(self):
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try:
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r = requests.post(self.url(f'/crawlback.php'), data={'url': MOCK_URL})
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assert r.text.split('\n').pop(0) == MOCK_DATA
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return True
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except Exception as e:
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self.logger.error(f'Could not check crawlback: {e}')
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return False
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