mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
Andrew C
129 lines
4.7 KiB
Python
129 lines
4.7 KiB
Python
# Volatility
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# Copyright (C) 2007-2013 Volatility Foundation
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#
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# This file is part of Volatility.
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#
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# Volatility is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License Version 2 as
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# published by the Free Software Foundation. You may not use, modify or
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# distribute this program under any other version of the GNU General
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# Public License.
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#
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# Volatility is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Volatility. If not, see <http://www.gnu.org/licenses/>.
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#
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"""
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@author: Andrew Case
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@license: GNU General Public License 2.0
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@contact: atcuno@gmail.com
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@organization:
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"""
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import struct
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from operator import attrgetter
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import volatility.obj as obj
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import volatility.debug as debug
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import volatility.addrspace as addrspace
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import volatility.plugins.mac.common as mac_common
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import volatility.plugins.mac.pstasks as mac_tasks
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class mac_bash_env(mac_tasks.mac_tasks):
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"""Recover bash's environment variables"""
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def calculate(self):
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mac_common.set_plugin_members(self)
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tasks = mac_tasks.mac_tasks(self._config).calculate()
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for task in tasks:
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proc_as = task.get_process_address_space()
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# In cases when mm is an invalid pointer
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if not proc_as:
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continue
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# Are we dealing with 32 or 64-bit pointers
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bit_string = str(task.task.map.pmap.pm_task_map or '')[9:]
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if bit_string.find("64BIT") == -1:
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pack_format = "<I"
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addr_sz = 4
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addr_type = "unsigned int"
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else:
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pack_format = "<Q"
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addr_sz = 8
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addr_type = "unsigned long long"
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procvars = []
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for mapping in task.get_proc_maps():
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if not str(mapping.get_perms()) == "rw-" or mapping.get_path().find("bash") == -1:
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continue
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env_start = 0
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for off in range(mapping.links.start, mapping.links.end):
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# check the first index
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addrstr = proc_as.read(off, addr_sz)
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if not addrstr or len(addrstr) != addr_sz:
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continue
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addr = struct.unpack(pack_format, addrstr)[0]
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# check first idx...
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if addr:
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firstaddrstr = proc_as.read(addr, addr_sz)
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if not firstaddrstr or len(firstaddrstr) != addr_sz:
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continue
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firstaddr = struct.unpack(pack_format, firstaddrstr)[0]
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buf = proc_as.read(firstaddr, 64)
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if not buf:
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continue
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eqidx = buf.find("=")
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if eqidx > 0:
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nullidx = buf.find("\x00")
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# single char name, =
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if nullidx >= eqidx:
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env_start = addr
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if env_start == 0:
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continue
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envars = obj.Object(theType="Array", targetType=addr_type, vm=proc_as, offset=env_start, count=256)
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for var in envars:
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if var:
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sizes = [8, 16, 32, 64, 128, 256, 384, 512, 1024, 2048, 4096]
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good_varstr = None
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for size in sizes:
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varstr = proc_as.read(var, size)
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if not varstr:
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continue
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eqidx = varstr.find("=")
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idx = varstr.find("\x00")
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if idx == -1 or eqidx == -1 or idx < eqidx:
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continue
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good_varstr = varstr
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break
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if good_varstr:
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good_varstr = good_varstr[:idx]
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procvars.append(good_varstr)
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yield task, " ".join(procvars)
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break
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def render_text(self, outfd, data):
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self.table_header(outfd, [("Pid", "8"),
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("Name", "20"),
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("Vars", "")])
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for task, vars in data:
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self.table_row(outfd, task.p_pid, task.p_comm, vars)
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