mirror of
https://github.com/volatilityfoundation/volatility
synced 2026-06-08 18:04:46 +00:00
atcuno
110 lines
4.0 KiB
Python
110 lines
4.0 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.linux.common as linux_common
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import volatility.plugins.linux.pslist as linux_pslist
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class linux_bash_env(linux_pslist.linux_pslist):
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"""Recover bash's environment variables"""
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def calculate(self):
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linux_common.set_plugin_members(self)
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tasks = linux_pslist.linux_pslist(self._config).calculate()
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# Are we dealing with 32 or 64-bit pointers
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if self.addr_space.profile.metadata.get('memory_model', '32bit') == '32bit':
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pack_format = "<I"
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addr_sz = 4
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else:
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pack_format = "<Q"
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addr_sz = 8
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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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procvars = []
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for vma in task.get_proc_maps():
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if not (vma.vm_file and str(vma.vm_flags) == "rw-" and linux_common.get_path(task, vma.vm_file).find("bash") != -1):
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continue
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env_start = 0
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for off in range(vma.vm_start, vma.vm_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="Pointer", 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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varstr = proc_as.read(var, 256)
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idx = varstr.find("\x00")
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varstr = varstr[:idx]
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procvars.append(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.pid, task.comm, vars)
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