Python obj.Pointer方法代码示例

# 需要导入模块: from volatility import obj [as 别名]
# 或者: from volatility.obj import Pointer [as 别名]
def _walk_upid(self, upid):

        while upid:

            pid = self.get_obj(upid.obj_offset, "pid", "numbers")

            for task in self._task_for_pid(upid, pid):
                yield task

            if type(upid.pid_chain) == obj.Pointer:
                pid_chain = obj.Object("hlist_node", offset = upid.pid_chain.obj_offset, vm = self.addr_space)
            else:
                pid_chain = upid.pid_chain

            if not pid_chain:
                break

            upid = self.get_obj(pid_chain.next, "upid", "pid_chain") 

# 需要导入模块: from volatility import obj [as 别名]
# 或者: from volatility.obj import Pointer [as 别名]
def _walk_upid(self, upid):
        seen = set()
        while upid and upid.is_valid() and upid.v() not in seen:
            seen.add(upid.v())

            pid = self.get_obj(upid.obj_offset, "pid", "numbers")

            for task in self._task_for_pid(upid, pid):
                yield task

            if type(upid.pid_chain) == obj.Pointer:
                pid_chain = obj.Object("hlist_node", offset = upid.pid_chain.obj_offset, vm = self.addr_space)
            else:
                pid_chain = upid.pid_chain

            if not pid_chain:
                break

            upid = self.get_obj(pid_chain.next, "upid", "pid_chain") 

# 需要导入模块: from volatility import obj [as 别名]
# 或者: from volatility.obj import Pointer [as 别名]
def _get_nodelist(self):
        ent = self.nodelists

        if type(ent) == obj.Pointer:
            ret = obj.Object("kmem_list3", offset = ent.dereference(), vm = self.obj_vm)

        elif type(ent) == obj.Array:
            ret = ent[0]
        else:
            debug.error("Unknown nodelists types. %s" % type(ent))

        return ret 

# 需要导入模块: from volatility import obj [as 别名]
# 或者: from volatility.obj import Pointer [as 别名]
def _get_pidhash_array(self):
        pidhash_shift = obj.Object("unsigned int", offset = self.addr_space.profile.get_symbol("pidhash_shift"), vm = self.addr_space)
        pidhash_size = 1 << pidhash_shift

        pidhash_addr = self.addr_space.profile.get_symbol("pid_hash")
        pidhash_ptr = obj.Object("Pointer", offset = pidhash_addr, vm = self.addr_space)

        # pidhash is an array of hlist_heads
        pidhash = obj.Object(theType = 'Array', offset = pidhash_ptr, vm = self.addr_space, targetType = 'hlist_head', count = pidhash_size)

        return pidhash 

# 需要导入模块: from volatility import obj [as 别名]
# 或者: from volatility.obj import Pointer [as 别名]
def calculate_v2(self):
        poff = self.addr_space.profile.get_obj_offset("task_struct", "pids") 

        pidhash    = self._get_pidhash_array()

        for p  in pidhash:
            if p.v() == 0:
                continue
            
            ptr = obj.Object("Pointer", offset = p.v(), vm = self.addr_space)
    
            if ptr.v() == 0:
                continue

            pidl = obj.Object("pid_link", offset = ptr.v(), vm = self.addr_space)

            nexth = pidl.pid

            if not nexth.is_valid():
                continue
         
            nexth = obj.Object("task_struct", offset = nexth - poff, vm = self.addr_space)

            while 1:
                if not pidl:
                    break

                yield nexth
               
                pidl = pidl.node.m("next").dereference_as("pid_link")    
                
                nexth = pidl.pid

                if not nexth.is_valid():
                    break
 
                nexth = obj.Object("task_struct", offset = nexth - poff, vm = self.addr_space) 

# 需要导入模块: from volatility import obj [as 别名]
# 或者: from volatility.obj import Pointer [as 别名]
def modification(self, profile):
        profile.merge_overlay({'VOLATILITY_MAGIC': [ 0x0, {
                                    'PoolAlignment': [ 0x0, ['VolatilityMagic', dict(value = 16)] ],
                                    'KUSER_SHARED_DATA': [ 0x0, ['VolatilityMagic', dict(value = 0xFFFFF78000000000)]],
                                                           }
                                                    ]})
        profile.vtypes["_IMAGE_NT_HEADERS"] = profile.vtypes["_IMAGE_NT_HEADERS64"]

        profile.merge_overlay({'_DBGKD_GET_VERSION64' : [  None, {
            'DebuggerDataList' : [ None, ['pointer', ['unsigned long long']]],
            }]})

        # In some auto-generated vtypes, the DTB is an array of 2 unsigned longs 
        # (for x86) or an array of 2 unsigned long long (for x64). We have an overlay
        # in windows.windows_overlay which sets the DTB to a single unsigned long,
        # but we do not want that bleeding through to the x64 profiles. Instead we 
        # want the x64 DTB to be a single unsigned long long. 
        profile.merge_overlay({'_KPROCESS' : [ None, {
            'DirectoryTableBase' : [ None, ['unsigned long long']],
            }]})

        # Note: the following method of profile modification is strongly discouraged
        #
        # Nasty hack because pointer64 has a special structure,
        # and therefore can't just be instantiated in object_classes
        # using profile.object_classes.update({'pointer64': obj.Pointer})
        profile._list_to_type = Pointer64Decorator(profile._list_to_type) 

# 需要导入模块: from volatility import obj [as 别名]
# 或者: from volatility.obj import Pointer [as 别名]
def _get_name(self, pde, parent):
        if type(pde.name) == obj.Pointer:
            s = pde.name.dereference_as("String", length = 255)
        else:
            s = pde.obj_vm.read(pde.name.obj_offset, pde.namelen)
        
        return str(parent + "/" + str(s)) 

# 需要导入模块: from volatility import obj [as 别名]
# 或者: from volatility.obj import Pointer [as 别名]
def _process_sysctl_list(self, sysctl_list, r = 0):

        if type(sysctl_list) == obj.Pointer:
            sysctl_list = sysctl_list.dereference_as("sysctl_oid_list")

        sysctl = sysctl_list.slh_first
        
        # skip the head entry if new list (recursive call)
        if r:
            sysctl = sysctl.oid_link.sle_next

        while sysctl and sysctl.is_valid():
            name = sysctl.oid_name.dereference()

            if len(name) == 0:
                break

            name = str(name)

            ctltype = sysctl.get_ctltype()

            if sysctl.oid_arg1 == 0 or not sysctl.oid_arg1.is_valid():
                val = self._parse_global_variable_sysctls(name)
            elif ctltype == 'CTLTYPE_NODE':
                if sysctl.oid_handler == 0:
                    for info in self._process_sysctl_list(sysctl.oid_arg1, r = 1):
                        yield info 
                val = "Node"
            elif ctltype in ['CTLTYPE_INT', 'CTLTYPE_QUAD', 'CTLTYPE_OPAQUE']:
                val = sysctl.oid_arg1.dereference()
            elif ctltype == 'CTLTYPE_STRING':
                ## FIXME: can we do this without get_string?
                val = common.get_string(sysctl.oid_arg1, self.addr_space)
            else:
                val = ctltype

            yield (sysctl, name, val)

            sysctl = sysctl.oid_link.sle_next 

# 需要导入模块: from volatility import obj [as 别名]
# 或者: from volatility.obj import Pointer [as 别名]
def calculate_v3(self):
        self.seen_tasks = {}

        pidhash_shift = obj.Object("unsigned int", offset = self.addr_space.profile.get_symbol("pidhash_shift"), vm = self.addr_space)
        pidhash_size = 1 << pidhash_shift

        pidhash_addr = self.addr_space.profile.get_symbol("pid_hash")
        pidhash_ptr = obj.Object("Pointer", offset = pidhash_addr, vm = self.addr_space)

        # pidhash is an array of hlist_heads
        pidhash = obj.Object(theType = 'Array', offset = pidhash_ptr, vm = self.addr_space, targetType = 'hlist_head', count = pidhash_size)

        for hlist in pidhash:

            # each entry in the hlist is a upid which is wrapped in a pid
            ent = hlist.first

            while ent.v():
                upid = self.get_obj(ent.obj_offset, "upid", "pid_chain")

                for task in self._walk_upid(upid):
                    if not task.obj_offset in self.seen_tasks:
                        self.seen_tasks[task.obj_offset] = 1
                        if task.is_valid_task():
                            yield task

                ent = ent.m("next")

    # the following functions exist because crash has handlers for them
    # but I was unable to find a profile/kernel that needed them (maybe too old or just a one-off distro kernel
    # if someone actually triggers this message, I can quickly add in the support as I will have a sample to test again 

# 需要导入模块: from volatility import obj [as 别名]
# 或者: from volatility.obj import Pointer [as 别名]
def check_proc_fop(self, f_op_members, modules):
        proc_mnt_addr = self.addr_space.profile.get_symbol("proc_mnt")
        
        if proc_mnt_addr:
            proc_mnt_ptr = obj.Object("Pointer", offset = proc_mnt_addr, vm = self.addr_space)
            proc_mnts    = [proc_mnt_ptr.dereference_as("vfsmount")]
        else:
            proc_mnts = []
            seen_pids = {}
                
            if self.addr_space.profile.obj_has_member("nsproxy", "pid_ns"):
                ns_member = "pid_ns"
            else:
                ns_member = "pid_ns_for_children"

            for task in self.tasks:
                nsp = task.nsproxy
                pidns = nsp.m(ns_member)

                if pidns.v() in seen_pids:
                    continue

                seen_pids[pidns.v()] = 1

                proc_mnts.append(pidns.proc_mnt)

        for proc_mnt in proc_mnts:
            root = proc_mnt.mnt_root

            for (hooked_member, hook_address) in self.verify_ops(root.d_inode.i_fop, f_op_members, modules):
                yield ("proc_mnt: root: %x" % root.v(), hooked_member, hook_address)

            # only check the root directory
            if self.addr_space.profile.obj_has_member("dentry", "d_child"):
                walk_member = "d_child"
            else:
                walk_member = "d_u"

            for dentry in root.d_subdirs.list_of_type("dentry", walk_member):
                name = dentry.d_name.name.dereference_as("String", length = 255)

                for (hooked_member, hook_address) in self.verify_ops(dentry.d_inode.i_fop, f_op_members, modules): 
                    yield("proc_mnt: {0:x}:{1}".format(root.v(), name), hooked_member, hook_address)