Created
August 5, 2023 12:30
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SSH + HTTP Polyglot
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| import trio # python3 -m pip install --upgrade trio | |
| HTML = "<html>Hello World!</html>" | |
| HTTP_BANNER = f"HTTP/1.1 200 OK\nContent-Length: {len(HTML)+1}\n\n{HTML}\n".encode() | |
| async def forward_from_a_to_b(a, b): | |
| async for chunk in a: | |
| print(f"=> {chunk}", flush=True) | |
| await b.send_all(chunk) | |
| async def proxy(listen_stream): | |
| await listen_stream.send_all(HTTP_BANNER) | |
| target_stream = await trio.open_tcp_stream('localhost', 22) | |
| async with trio.open_nursery() as nursery: | |
| nursery.start_soon(forward_from_a_to_b, listen_stream, target_stream) | |
| nursery.start_soon(forward_from_a_to_b, target_stream, listen_stream) | |
| async def main(): | |
| while True: | |
| try: | |
| await trio.serve_tcp(proxy, 422) | |
| except KeyboardInterrupt: | |
| break | |
| except trio.BrokenResourceError: | |
| print("Conn died") | |
| if __name__ == '__main__': | |
| trio.run(main) |
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