Add RevShellBack payload (#265)

payloads/library/execution/RevShellBack/README.md

@@ -0,0 +1,32 @@
+# RevShellBack
+
+- Author: NodePoint
+- Version: 0.1.3
+- Target: Windows
+- Category: Execution
+
+## Description
+
+Set up a reverse shell and execute PowerShell/generic commands in the background from the Bash Bunny via USB ethernet.
+
+## Configuration
+
+Place powershell and/or generic commands between lines 53 and 58 (within the EOF).
+<br>
+Need to run as admin? Set the variable ADMIN to true.
+<br>
+Having issues obtaining a connection with the listener? Alter the time before connection attempt in NCDELAY.
+
+## STATUS
+
+| LED      | Status                                    |
+| -------- | ----------------------------------------- |
+| SETUP    | Setup (attackmode, variables, networking) |
+| STAGE1   | Open CMD (bypass UAC if ADMIN is true)    |
+| STAGE2   | Initiate reverse shell                    |
+| SPECIAL1 | Set up listener and send out commands     |
+| FINISH   | Finished                                  |
+
+## Discussion
+
+https://forums.hak5.org/topic/41955-payload-revshellback/