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|
<%page args="binary, host=None, port=None, user=None, password=None, libc=None, remote_path=None, quiet=False"/>\
<%
import os
import sys
from pwnlib.context import context as ctx
from pwnlib.elf.elf import ELF
from pwnlib.util.sh_string import sh_string
from elftools.common.exceptions import ELFError
argv = list(sys.argv)
argv[0] = os.path.basename(argv[0])
try:
if binary:
ctx.binary = ELF(binary, checksec=False)
except ELFError:
pass
if not binary:
binary = './path/to/binary'
exe = os.path.basename(binary)
ssh = user or password
if ssh and not port:
port = 22
elif host and not port:
port = 4141
remote_path = remote_path or exe
password = password or 'secret1234'
binary_repr = repr(binary)
libc_repr = repr(libc)
%>\
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
%if not quiet:
# This exploit template was generated via:
# $ ${' '.join(map(sh_string, argv))}
%endif
from pwn import *
%if not quiet:
# Set up pwntools for the correct architecture
%endif
%if ctx.binary:
exe = context.binary = ELF(args.EXE or ${binary_repr})
<% binary_repr = 'exe.path' %>
%else:
context.update(arch='i386')
exe = ${binary_repr}
<% binary_repr = 'exe' %>
%endif
%if not quiet:
# Many built-in settings can be controlled on the command-line and show up
# in "args". For example, to dump all data sent/received, and disable ASLR
# for all created processes...
# ./exploit.py DEBUG NOASLR
%if host or port or user:
# ./exploit.py GDB HOST=example.com PORT=4141 EXE=/tmp/executable
%endif
%endif
%if host:
host = args.HOST or ${repr(host)}
%endif
%if port:
port = int(args.PORT or ${port})
%endif
%if user:
user = args.USER or ${repr(user)}
password = args.PASSWORD or ${repr(password)}
%endif
%if ssh:
remote_path = ${repr(remote_path)}
%endif
%if ssh:
# Connect to the remote SSH server
shell = None
if not args.LOCAL:
shell = ssh(user, host, port, password)
shell.set_working_directory(symlink=True)
%endif
%if libc:
%if not quiet:
# Use the specified remote libc version unless explicitly told to use the
# local system version with the `LOCAL_LIBC` argument.
# ./exploit.py LOCAL LOCAL_LIBC
%endif
if args.LOCAL_LIBC:
libc = exe.libc
%if host:
elif args.LOCAL:
%else:
else:
%endif
library_path = libcdb.download_libraries(${libc_repr})
if library_path:
%if ctx.binary:
exe = context.binary = ELF.patch_custom_libraries(${binary_repr}, library_path)
%else:
exe = ELF.patch_custom_libraries(exe, library_path)
%endif
libc = exe.libc
else:
libc = ELF(${libc_repr})
%if host:
else:
libc = ELF(${libc_repr})
%endif
%endif
%if host:
def start_local(argv=[], *a, **kw):
'''Execute the target binary locally'''
if args.GDB:
return gdb.debug([${binary_repr}] + argv, gdbscript=gdbscript, *a, **kw)
else:
return process([${binary_repr}] + argv, *a, **kw)
def start_remote(argv=[], *a, **kw):
%if ssh:
'''Execute the target binary on the remote host'''
if args.GDB:
return gdb.debug([remote_path] + argv, gdbscript=gdbscript, ssh=shell, *a, **kw)
else:
return shell.process([remote_path] + argv, *a, **kw)
%else:
'''Connect to the process on the remote host'''
io = connect(host, port)
if args.GDB:
gdb.attach(io, gdbscript=gdbscript)
return io
%endif
%endif
%if host:
def start(argv=[], *a, **kw):
'''Start the exploit against the target.'''
if args.LOCAL:
return start_local(argv, *a, **kw)
else:
return start_remote(argv, *a, **kw)
%else:
def start(argv=[], *a, **kw):
'''Start the exploit against the target.'''
if args.GDB:
return gdb.debug([${binary_repr}] + argv, gdbscript=gdbscript, *a, **kw)
else:
return process([${binary_repr}] + argv, *a, **kw)
%endif
%if exe or remote_path:
%if not quiet:
# Specify your GDB script here for debugging
# GDB will be launched if the exploit is run via e.g.
# ./exploit.py GDB
%endif
gdbscript = '''
%if ctx.binary:
%if 'main' in ctx.binary.symbols:
tbreak main
%elif 'DYN' != ctx.binary.elftype:
tbreak *0x{exe.entry:x}
%endif
%endif
continue
'''.format(**locals())
%endif
%if not quiet:
#===========================================================
# EXPLOIT GOES HERE
#===========================================================
%else:
# -- Exploit goes here --
%endif
%if ctx.binary and not quiet:
# ${'%-10s%s-%s-%s' % ('Arch:',
ctx.binary.arch,
ctx.binary.bits,
ctx.binary.endian)}
%for line in ctx.binary.checksec(color=False).splitlines():
# ${line}
%endfor
%endif
io = start()
%if not quiet:
# shellcode = asm(shellcraft.sh())
# payload = fit({
# 32: 0xdeadbeef,
# 'iaaa': [1, 2, 'Hello', 3]
# }, length=128)
# io.send(payload)
# flag = io.recv(...)
# log.success(flag)
%endif
io.interactive()
|
