Add ssh -L / ssh.connect_remote() workaround when AllowTcpForwarding is disabled#2538
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peace-maker merged 5 commits intoGallopsled:devfrom Mar 30, 2025
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…ding` is disabled Use a netcat process on the remote to connect to the specified host:port and tunnel the traffic using normal `ssh.process` I/O. This was inspired by the "Circumventing Disabled SSH Port-Forwarding with a Multiplexer" article by @guysv in the Paged Out! zine no. 5. It allows to use `gdb.debug(arg, ssh=ssh)` to debug processes on pwn.college.
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Xeonacid
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Jan 31, 2025
Co-authored-by: Xeonacid <h.dwwwwww@gmail.com>
guysv
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Feb 14, 2025
pwnlib/tubes/ssh.py
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| if parent.which('nc'): | ||
| ncat = 'nc' | ||
| elif parent.which('ncat'): | ||
| ncat = 'ncat' |
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maybe add a fallback to bash's /dev/tcp? might be worth checking out.
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chatgpt crafted
bash -c 'exec 3<>/dev/tcp/localhost/1337; cat <&3 & cat >&3; kill $!'
to connect to localhost:1337 (tying stdin & stdout)
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Use a netcat process on the remote to connect to the specified host:port and tunnel the traffic using normal
ssh.processI/O.This was inspired by the "Circumventing Disabled SSH Port-Forwarding with a Multiplexer" article by @guysv in the Paged Out! zine no. 5.
Debugging works now instead of throwing a
paramiko.ssh_exception.ChannelException: ChannelException(1, 'Administratively prohibited')exception on pwn.college.