The following code is for security research and authorized testing only.
python
import socket
import ssl
# This PoC demonstrates a concept of forcing a weak cipher suite
# Targeting a server vulnerable to Algorithm Downgrade
def check_weak_cipher(hostname, port):
context = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
# Intentionally set weak ciphers to simulate downgrade
context.set_ciphers('RSA-RC4-128-SHA:')
try:
with socket.create_connection((hostname, port)) as sock:
with context.wrap_socket(sock, server_hostname=hostname) as ssock:
print(f"[+] Connection established with weak cipher: {ssock.cipher()}")
return True
except Exception as e:
print(f"[-] Failed to establish connection: {e}")
return False
if __name__ == "__main__":
target_host = "example.com" # Replace with vulnerable target
check_weak_cipher(target_host, 443)