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# Author: Nicolas VERDIER
# This file is part of memorpy.
#
# memorpy is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# memorpy is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with memorpy. If not, see <http://www.gnu.org/licenses/>.
import copy
import struct
import utils
import platform
import ctypes, re, sys
import ctypes.util
import errno
import os
import signal
from .BaseProcess import BaseProcess, ProcessException
from .structures import *
import logging
import subprocess
logger = logging.getLogger('memorpy')
libc = ctypes.CDLL(ctypes.util.find_library('c'))
VM_REGION_BASIC_INFO_64 = 9
class vm_region_basic_info_64(ctypes.Structure):
_fields_ = [
('protection', ctypes.c_uint32),
('max_protection', ctypes.c_uint32),
('inheritance', ctypes.c_uint32),
('shared', ctypes.c_uint32),
('reserved', ctypes.c_uint32),
('offset', ctypes.c_ulonglong),
('behavior', ctypes.c_uint32),
('user_wired_count',ctypes.c_ushort),
]
VM_REGION_BASIC_INFO_COUNT_64 = ctypes.sizeof(vm_region_basic_info_64) / 4
VM_PROT_READ = 1
VM_PROT_WRITE = 2
VM_PROT_EXECUTE = 4
class OSXProcess(BaseProcess):
def __init__(self, pid=None, name=None, debug=True):
""" Create and Open a process object from its pid or from its name """
super(OSXProcess, self).__init__()
if pid is not None:
self.pid=pid
elif name is not None:
self.pid=OSXProcess.pid_from_name(name)
else:
raise ValueError("You need to instanciate process with at least a name or a pid")
self.task=None
self.mytask=None
self._open()
def close(self):
pass
def __del__(self):
pass
def _open(self):
self.isProcessOpen = True
self.task = ctypes.c_uint32()
self.mytask=libc.mach_task_self()
ret=libc.task_for_pid(self.mytask, ctypes.c_int(self.pid), ctypes.pointer(self.task))
if ret!=0:
raise ProcessException("task_for_pid failed with error code : %s"%ret)
@staticmethod
def list():
#TODO list processes with ctypes
processes=[]
res=subprocess.check_output("ps A", shell=True)
for line in res.split('\n'):
try:
tab=line.split()
pid=int(tab[0])
exe=' '.join(tab[4:])
processes.append({"pid":int(pid), "name":exe})
except:
pass
return processes
@staticmethod
def pid_from_name(name):
for dic in OSXProcess.list():
if name in dic['exe']:
return dic['pid']
def iter_region(self, start_offset=None, end_offset=None, protec=None, optimizations=None):
"""
optimizations :
i for inode==0 (no file mapping)
s to avoid scanning shared regions
x to avoid scanning x regions
r don't scan ronly regions
"""
maps = []
address = ctypes.c_ulong(0)
mapsize = ctypes.c_ulong(0)
name = ctypes.c_uint32(0)
count = ctypes.c_uint32(VM_REGION_BASIC_INFO_COUNT_64)
info = vm_region_basic_info_64()
while True:
r = libc.mach_vm_region(self.task, ctypes.pointer(address),
ctypes.pointer(mapsize), VM_REGION_BASIC_INFO_64,
ctypes.pointer(info), ctypes.pointer(count),
ctypes.pointer(name))
# If we get told "invalid address", we have crossed into kernel land...
if r == 1:
break
if r != 0:
raise ProcessException('mach_vm_region failed with error code %s' % r)
if start_offset is not None:
if address.value < start_offset:
address.value += mapsize.value
continue
if end_offset is not None:
if address.value > end_offset:
break
p = info.protection
if p & VM_PROT_EXECUTE:
if optimizations and 'x' in optimizations:
address.value += mapsize.value
continue
if info.shared:
if optimizations and 's' in optimizations:
address.value += mapsize.value
continue
if p & VM_PROT_READ:
if not (p & VM_PROT_WRITE):
if optimizations and 'r' in optimizations:
address.value += mapsize.value
continue
yield address.value, mapsize.value
address.value += mapsize.value
def write_bytes(self, address, data):
raise NotImplementedError("write not implemented on OSX")
return True
def read_bytes(self, address, bytes = 4):
pdata = ctypes.c_void_p(0)
data_cnt = ctypes.c_uint32(0)
ret = libc.mach_vm_read(self.task, ctypes.c_ulonglong(address), ctypes.c_longlong(bytes), ctypes.pointer(pdata), ctypes.pointer(data_cnt));
#if ret==1:
# return ""
if ret!=0:
raise ProcessException("mach_vm_read returned : %s"%ret)
buf=ctypes.string_at(pdata.value, data_cnt.value)
libc.vm_deallocate(self.mytask, pdata, data_cnt)
return buf
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