├── ChangeLog.txt
├── CloseSandbox.bat
├── Console.exe
├── DesktopSwitcher.exe
├── HTCC 2016 Student Research Conference Abstract.docx
├── KeepAlive.exe
├── LICENSE
├── ProtectedDesktops.exe
├── ReadMe.txt
├── Source
├── Common
│ ├── Sandbox.cpp
│ └── Sandbox.h
├── Console
│ ├── Console.cpp
│ ├── Console.vcxproj
│ └── Console.vcxproj.filters
├── DesktopSwitcher
│ ├── DesktopSwitcher.cpp
│ ├── DesktopSwitcher.vcxproj
│ └── DesktopSwitcher.vcxproj.filters
├── KeepAlive
│ ├── KeepAlive.cpp
│ ├── KeepAlive.vcxproj
│ └── KeepAlive.vcxproj.filters
├── ProtectedDesktops.cpp
├── ProtectedDesktops.sln
├── ProtectedDesktops.v12.suo
├── ProtectedDesktops.vcxproj
├── ProtectedDesktops.vcxproj.filters
└── RunMe
│ ├── RunMe.cpp
│ ├── RunMe.vcxproj
│ └── RunMe.vcxproj.filters
├── Windows8&10
├── ReadMe.txt
├── RunMe.bat
└── RunMe.exe
└── settings.ini
/ChangeLog.txt:
--------------------------------------------------------------------------------
1 | Version 0.2
2 |
3 |
4 | Added Windows 8 & 10 support.
5 |
6 | Added small reliability and speed improvements.
7 |
8 |
9 |
10 | Version 0.1:
11 |
12 |
13 | Original upload
14 |
--------------------------------------------------------------------------------
/CloseSandbox.bat:
--------------------------------------------------------------------------------
1 | taskkill /f /t /fi "USERNAME eq Sandbox"
--------------------------------------------------------------------------------
/Console.exe:
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https://raw.githubusercontent.com/joshduf/ProtectedDesktops/9c7c9aa36ed2cc3042bd3eecd57bf8e47228d396/Console.exe
--------------------------------------------------------------------------------
/DesktopSwitcher.exe:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/joshduf/ProtectedDesktops/9c7c9aa36ed2cc3042bd3eecd57bf8e47228d396/DesktopSwitcher.exe
--------------------------------------------------------------------------------
/HTCC 2016 Student Research Conference Abstract.docx:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/joshduf/ProtectedDesktops/9c7c9aa36ed2cc3042bd3eecd57bf8e47228d396/HTCC 2016 Student Research Conference Abstract.docx
--------------------------------------------------------------------------------
/KeepAlive.exe:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/joshduf/ProtectedDesktops/9c7c9aa36ed2cc3042bd3eecd57bf8e47228d396/KeepAlive.exe
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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527 | to the third party based on the extent of your activity of conveying
528 | the work, and under which the third party grants, to any of the
529 | parties who would receive the covered work from you, a discriminatory
530 | patent license (a) in connection with copies of the covered work
531 | conveyed by you (or copies made from those copies), or (b) primarily
532 | for and in connection with specific products or compilations that
533 | contain the covered work, unless you entered into that arrangement,
534 | or that patent license was granted, prior to 28 March 2007.
535 |
536 | Nothing in this License shall be construed as excluding or limiting
537 | any implied license or other defenses to infringement that may
538 | otherwise be available to you under applicable patent law.
539 |
540 | 12. No Surrender of Others' Freedom.
541 |
542 | If conditions are imposed on you (whether by court order, agreement or
543 | otherwise) that contradict the conditions of this License, they do not
544 | excuse you from the conditions of this License. If you cannot convey a
545 | covered work so as to satisfy simultaneously your obligations under this
546 | License and any other pertinent obligations, then as a consequence you may
547 | not convey it at all. For example, if you agree to terms that obligate you
548 | to collect a royalty for further conveying from those to whom you convey
549 | the Program, the only way you could satisfy both those terms and this
550 | License would be to refrain entirely from conveying the Program.
551 |
552 | 13. Use with the GNU Affero General Public License.
553 |
554 | Notwithstanding any other provision of this License, you have
555 | permission to link or combine any covered work with a work licensed
556 | under version 3 of the GNU Affero General Public License into a single
557 | combined work, and to convey the resulting work. The terms of this
558 | License will continue to apply to the part which is the covered work,
559 | but the special requirements of the GNU Affero General Public License,
560 | section 13, concerning interaction through a network will apply to the
561 | combination as such.
562 |
563 | 14. Revised Versions of this License.
564 |
565 | The Free Software Foundation may publish revised and/or new versions of
566 | the GNU General Public License from time to time. Such new versions will
567 | be similar in spirit to the present version, but may differ in detail to
568 | address new problems or concerns.
569 |
570 | Each version is given a distinguishing version number. If the
571 | Program specifies that a certain numbered version of the GNU General
572 | Public License "or any later version" applies to it, you have the
573 | option of following the terms and conditions either of that numbered
574 | version or of any later version published by the Free Software
575 | Foundation. If the Program does not specify a version number of the
576 | GNU General Public License, you may choose any version ever published
577 | by the Free Software Foundation.
578 |
579 | If the Program specifies that a proxy can decide which future
580 | versions of the GNU General Public License can be used, that proxy's
581 | public statement of acceptance of a version permanently authorizes you
582 | to choose that version for the Program.
583 |
584 | Later license versions may give you additional or different
585 | permissions. However, no additional obligations are imposed on any
586 | author or copyright holder as a result of your choosing to follow a
587 | later version.
588 |
589 | 15. Disclaimer of Warranty.
590 |
591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
599 |
600 | 16. Limitation of Liability.
601 |
602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
610 | SUCH DAMAGES.
611 |
612 | 17. Interpretation of Sections 15 and 16.
613 |
614 | If the disclaimer of warranty and limitation of liability provided
615 | above cannot be given local legal effect according to their terms,
616 | reviewing courts shall apply local law that most closely approximates
617 | an absolute waiver of all civil liability in connection with the
618 | Program, unless a warranty or assumption of liability accompanies a
619 | copy of the Program in return for a fee.
620 |
621 | END OF TERMS AND CONDITIONS
622 |
623 | How to Apply These Terms to Your New Programs
624 |
625 | If you develop a new program, and you want it to be of the greatest
626 | possible use to the public, the best way to achieve this is to make it
627 | free software which everyone can redistribute and change under these terms.
628 |
629 | To do so, attach the following notices to the program. It is safest
630 | to attach them to the start of each source file to most effectively
631 | state the exclusion of warranty; and each file should have at least
632 | the "copyright" line and a pointer to where the full notice is found.
633 |
634 | {one line to give the program's name and a brief idea of what it does.}
635 | Copyright (C) {year} {name of author}
636 |
637 | This program is free software: you can redistribute it and/or modify
638 | it under the terms of the GNU General Public License as published by
639 | the Free Software Foundation, either version 3 of the License, or
640 | (at your option) any later version.
641 |
642 | This program is distributed in the hope that it will be useful,
643 | but WITHOUT ANY WARRANTY; without even the implied warranty of
644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
645 | GNU General Public License for more details.
646 |
647 | You should have received a copy of the GNU General Public License
648 | along with this program. If not, see .
649 |
650 | Also add information on how to contact you by electronic and paper mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | {project} Copyright (C) {year} {fullname}
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands `show w' and `show c' should show the appropriate
661 | parts of the General Public License. Of course, your program's commands
662 | might be different; for a GUI interface, you would use an "about box".
663 |
664 | You should also get your employer (if you work as a programmer) or school,
665 | if any, to sign a "copyright disclaimer" for the program, if necessary.
666 | For more information on this, and how to apply and follow the GNU GPL, see
667 | .
668 |
669 | The GNU General Public License does not permit incorporating your program
670 | into proprietary programs. If your program is a subroutine library, you
671 | may consider it more useful to permit linking proprietary applications with
672 | the library. If this is what you want to do, use the GNU Lesser General
673 | Public License instead of this License. But first, please read
674 | .
675 |
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/ProtectedDesktops.exe:
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https://raw.githubusercontent.com/joshduf/ProtectedDesktops/9c7c9aa36ed2cc3042bd3eecd57bf8e47228d396/ProtectedDesktops.exe
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/ReadMe.txt:
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1 | ProtectedDesktops:
2 | A program that uses native Windows features to create a fully sandboxed environment on Windows.
3 |
4 | This program was written as part of an undergraduate research project
5 | presented at the Honors Transfer Council of California, 26 Mar. 2016.
6 |
7 |
8 | Copyright 2016 Joshua DuFault
9 |
10 | Contact: Josh.DuFault@gmail.com
11 |
12 |
13 | Version 0.2
14 |
15 | This program is in beta. It has been tested on Windows 7 x64, Windows 8 x64, and Windows 10 x64.
16 |
17 |
18 |
19 | This program is free software: you can redistribute it and/or modify
20 | it under the terms of the GNU General Public License as published by
21 | the Free Software Foundation, either version 3 of the License, or
22 | (at your option) any later version.
23 |
24 | This program is distributed in the hope that it will be useful,
25 | but WITHOUT ANY WARRANTY; without even the implied warranty of
26 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 | GNU General Public License for more details.
28 |
29 | You should have received a copy of the GNU General Public License
30 | along with ProtectedDesktops. If not, see .
31 |
32 |
33 |
34 | Application Files:
35 |
36 |
37 | ProtectedDesktops.exe
38 |
39 | Console.exe
40 |
41 | KeepAlive.exe
42 |
43 | DesktopSwitcher.exe
44 |
45 | Settings.ini
46 |
47 | CloseSandbox.bat
48 |
49 |
50 |
51 | Directions:
52 |
53 |
54 | 1. The user must be running Windows Vista or later and have 3 user accounts set up as follows:
55 |
56 | Account 1: the main user. This is the account you use at the Windows logon screen. This account
57 |
58 | should be a Standard User Account
59 |
60 | Account 2: an administrator account.
61 |
62 | Account 3: an account to be used with the sandbox. The account could be used to isolate
63 |
64 | potentially dangerous programs or protect sensitive data. It obviously can't be used for both at the
65 |
66 | same time.
67 |
68 | All accounts must have a password.
69 |
70 | The user must have logged on to all 3 accounts through the main Windows logon screen at least once.
71 |
72 | Make user you can a run as for Account 3. Hold down shift and right click on a simple program like
73 |
74 | notepad. Select "Run as different user." Enter the username and password of Account 3. Verify the
75 |
76 | program ran.
77 |
78 |
79 |
80 | 2. The user must have a file manager other than Windows Explorer installed in a protected location. For
81 |
82 | example: have Explorer++ installed in C:\Program Files (x86)\
83 |
84 |
85 | 3. The Settings.ini file must be updated before use. It is in the following format:
86 |
87 | Main user
88 |
89 | Sandboxed user
90 |
91 | Path to file manager
92 |
93 | The included Settings.ini file has an example.
94 |
95 |
96 | 4. The CloseSandbox.bat file also has to be updated.
97 |
98 | The file can be opened in any text editor such as notepad.
99 |
100 | The part of the line that says "Sandbox" must be changed to the name of Account 3.
101 |
102 | For example: taskkill /f /t /fi "USERNAME eq MyOtherUserAccount"
103 |
104 |
105 | 4. All program files should be saved in a protected location such as C:\Program Files (x86)\
106 |
107 |
108 | 5. Run ProtectedDesktops.exe and enter the requested information when prompted.
109 |
110 |
111 | For Windows 8 & 10: also follow the directions in the Windows 8 & 10 ReadMe.txt in the corresponding folder.
112 |
113 |
114 | The sandbox is now set up. Run DesktopSwitcher.exe to switch between the sandbox and the main desktop.
115 |
116 | Run CloseSandbox.bat to close the sandbox by right clicking and selecting "Run as administrator."
117 |
118 | Programs launched in the sandbox have no access to programs launched on the main desktop and vice versa.
119 |
120 | Processes cannot jump to the other desktop. They cannot keylog or launch shatter attacks across the
121 |
122 | desktop barrier. They cannot read or write to the memory of processes on the other side of the sandbox.
123 |
124 | Processes run on the sandbox have a different set of user folders then the main user. The two users
125 |
126 | cannot read or write to each other's files. Otherwise, programs run like normal in the sandbox.
127 |
128 | Restarting the computer reverts all settings adjusted by the program back to normal.
129 |
130 |
131 |
132 | Background:
133 |
134 |
135 | Antivirus programs block only 45% of malware attacks according to Brian Dye, the senior vice president
136 |
137 | for information security at Symantec in a Wall Street Journal interview. Many security products use
138 |
139 | sandboxes to attempt to provide better protection by isolating potentially dangerous processes or
140 |
141 | protect sensitive information; however, many of the implementations are easily bypassed or cause
142 |
143 | additional security problems. Common sandboxing techniques currently in use and their limitations are
144 |
145 | listed below.
146 |
147 |
148 | 1. Running programs on the same desktop with reduced privileges using a restricted or
149 |
150 | impersonation token:
151 |
152 | Malware can use windows messaging based attacks i.e. shatter attacks to jump to a more
153 |
154 | privileged program.
155 |
156 | All programs in the same session can read each others memory by default and steal
157 |
158 | passwords or other sensitive data from memory.
159 |
160 |
161 | 2. Creating separate desktops to isolate potentially dangerous programs or protect sensitive
162 |
163 | data.
164 |
165 | Desktops are secured by user, not by process. Malware launched by the same user can
166 |
167 | easily jump between desktops.
168 |
169 | Programs that switch to a dimmed desktop the way Windows does when UAC is invoked are
170 |
171 | merely mimicking the Windows secure desktop. Only processes with system privileges have access to that
172 |
173 | desktop. Instead, these programs create a simple alternate desktop that is easily accessible.
174 |
175 |
176 | 3. Combining numbers 1 and 2, and using a restricted token with a made up SID and adding a deny
177 |
178 | for that SID to the main desktop's access control list to prevent malware from jumping to the main
179 |
180 | desktop.
181 |
182 | Restricted tokens must contain the RESTRICTED SID which gives read access to a users
183 |
184 | files and process memory. Malware can still steal passwords from memory or read sensitive files.
185 |
186 |
187 | 4. Using Job Objects to prevent malware from accessing other processes.
188 |
189 | Job objects don't prevent global hooks. Keylogging and code injection are still
190 |
191 | possible. Malware can still steal passwords and jump to less restricted processes.
192 |
193 | In Windows 7 and below, Job Objects don't nest. This means if a program is put into a
194 |
195 | Job Object, it can't use its own. Many programs use Job Objects to implement their own internal
196 |
197 | sandboxes.
198 |
199 |
200 | 5. Using integrity levels to prevent shatter attacks, code injection, and key logging.
201 |
202 | Integrity levels block most windows messages to more privileged processes but not all.
203 |
204 | Some messages are still allowed through and can be used to launch a shatter attack.
205 |
206 | A program installed in a protected area can have a request in its manifest to bypass
207 |
208 | this protection entirely. Some trusted programs are frequently taken over by malware e.g. internet
209 |
210 | browsers.
211 |
212 | Programs running at one integrity level have access to any other program running at the
213 |
214 | same or lower integrity level.
215 |
216 | Many applications use integrity levels in internal sandboxes creating a child process at
217 |
218 | a lower integrity level than the parent program to run potentially dangerous code. Putting such an
219 |
220 | application in a general purpose sandbox using integrity levels can damage the application's internal
221 |
222 | sandbox by putting the parent and child processes at the same integrity level.
223 |
224 | Programs not designed to run at a low or untrusted integrity level frequently don't work
225 |
226 | correctly when forced to do so.
227 |
228 |
229 | 6. Using all of the above with a token so restricted that it has no access to the file system.
230 |
231 | Effective from a security point of view but such a program is not able to do anything
232 |
233 | useful on its own. It needs to be built specifically to be used with a more privileged broker to provide
234 |
235 | a gateway to system resources. Individual application sandboxes can be written this way but a program
236 |
237 | not built to run in such a sandbox won't work.
238 |
239 |
240 |
241 | Hypothesis: It's possible to use Windows' built in security features in a way to make a sandbox that
242 |
243 | better protects a user's data.
244 |
245 |
246 | It is possible to launch a program using an impersonation token as an alternate user on a newly created
247 |
248 | desktop and then set the discretionary access control list (DACL) on the desktops to prevent programs
249 |
250 | from jumping over. This will prevent a program launched by any user from accessing the other desktop.
251 |
252 | Desktops block all window messages and global hooks preventing shatter attacks and keylogging. A process
253 |
254 | doesn't have write access to any program launched by a different user, preventing code injection. Each
255 |
256 | user has its own set of files and can't access another user's files.
257 |
258 | Any process, regardless of user, can read the memory of any other process in the same logon session at
259 |
260 | the same integrity level. A malicious program can still steal sensitive data out of memory. Processes
261 |
262 | are protected by DACLs and adding a deny entry in each process blocking the sandboxed user would prevent
263 |
264 | those programs from stealing information out of memory. However, this would mean constantly watching for
265 |
266 | every new process that's created to add the needed denies. An exception is that a desktop similiar to
267 |
268 | the Windows secure desktop can be created to enter passwords. Programs running as administrator should
269 |
270 | be kept to a minimum because they can the most damage if compromised but since the StartSandbox.exe
271 |
272 | process has to be run as admin anyway to set all the DACLs, it can create a desktop that only programs
273 |
274 | running as an administrator can access. This won't protect standard processes.
275 |
276 | The key to this sandbox is the default DACL. If no DACL is specified when a new process is launched,
277 |
278 | Windows will create a default DACL based on the parent process's token. After the initial startup, the
279 |
280 | parent process is typically explorer.exe. Explorer.exe consists of Windows Explorer and the Start Menu.
281 |
282 | The default DACL can be modified to add the neccessary deny entries to create a secure sandbox. Then,
283 |
284 | any new program launched will automatically receive the same DACL and any new program that it launches
285 |
286 | will receive the same DACL and so on. The only exception is if a launching program specifies a DACL
287 |
288 | during creation which is typically only done for a reason such as creating an internal application
289 |
290 | sandbox. In this case, the default DACLs are still usually inherited automatically, the launching
291 |
292 | program just adds further restrictions.
293 |
294 | The resulting sandbox barrier blocks data theft from memory and files, keylogging, code injection, and
295 |
296 | shatter attacks across the sandbox barrier. Even attempts to shut down another process across the
297 |
298 | barrier are blocked. The clipboard and public user folders "C:\Users\Public" can be used to transfer
299 |
300 | files and data in and out of the sandbox. This sandbox can be used either to contain malicious programs
301 |
302 | or protect sensitive information. Only a process with admin credentials can see across the barrier. A
303 |
304 | desktop switching program run with admin credentials is neccessary to switch visible desktops. A batch
305 |
306 | file running taskkill as administrator can be used to end all programs in the sandbox. The desktop will
307 |
308 | automatically close when all programs with access to it are closed.
309 |
310 | Integrity levels and Job Objects aren't considered because they interfer with commonly used
311 |
312 | applications.
313 |
314 |
315 |
316 | Testing:
317 |
318 |
319 | The sandbox successfully blocked the following actions across the sandbox barrier:
320 |
321 | 1. Reading and writing information in a process' memory.
322 |
323 | 2. Reading or writing to the other user's files.
324 |
325 | 3. Keylogging.
326 |
327 | 4. Windows messages.
328 |
329 |
330 | All tested programs worked normally in the sandbox. This includes involved programs that set their own
331 |
332 | internal sandboxes.
333 |
334 |
335 |
336 | Remaining vulnerabilities:
337 |
338 |
339 | 1. This only protects against malware running with user rights. If it gets administrator access
340 |
341 | either through user error or a novel privilege escalation attack, security is compromised.
342 |
343 | 2. There is no way to isolate the Windows kernel and no way to protect against a kernel exploit.
344 |
345 | 3. Processes on either side of the sandbox access some of the same resources. There are multiple
346 |
347 | writable locations that both sides have access to. It might be possible for malware to leave malicious
348 |
349 | code waiting in a place that a vulnerable program on the other side will access.
350 |
351 |
352 |
353 | Conclusion:
354 |
355 |
356 | The remaining vulnerabilities are significantly more difficult than merely reading a password out of
357 |
358 | memory. Perfect security is impossible but this sandbox is more effective than several other currently
359 |
360 | used types. It is also lighter on system resources:
361 |
362 | Total application size: less than 1MB.
363 |
364 | CPU use after initial setup: 0.
365 |
366 | Installation: not required.
367 |
368 |
369 | Microsoft could implement a similiar sandbox in an update to Windows 10. Windows 10 currently offers a
370 |
371 | multiple desktop feature but it is entirely cosmetic and offers no security. This would give a native
372 |
373 | way for users to protect sensitive information, such as banking data, from theft and keep important
374 |
375 | files safe from destructive malware, such as ransomware.
376 |
377 |
378 | Future research possibilities include setting default DACLs on kernel objects and inherited permissions
379 |
380 | on files and registry keys to isolate them against vulnerability 3.
--------------------------------------------------------------------------------
/Source/Common/Sandbox.cpp:
--------------------------------------------------------------------------------
1 | /*
2 | ProtectedDesktops:
3 | A program that uses native Windows features to create a fully sandboxed environment on Windows.
4 |
5 | This program was written as part of an undergraduate research project
6 | presented at the Honors Transfer Council of California, 26 Mar. 2016.
7 |
8 | Copyright 2016 Joshua DuFault
9 |
10 |
11 | This file is part of ProtectedDesktops.
12 |
13 | ProtectedDesktops is free software: you can redistribute it and/or modify
14 | it under the terms of the GNU General Public License as published by
15 | the Free Software Foundation, either version 3 of the License, or
16 | (at your option) any later version.
17 |
18 | ProtectedDesktops is distributed in the hope that it will be useful,
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 | GNU General Public License for more details.
22 |
23 | You should have received a copy of the GNU General Public License
24 | along with ProtectedDesktops. If not, see .
25 |
26 | */
27 |
28 |
29 | #ifndef WIN32_LEAN_AND_MEAN
30 | #define WIN32_LEAN_AND_MEAN
31 | #endif
32 |
33 | #include "Sandbox.h"
34 | using namespace std;
35 |
36 | // Opens settings file
37 | // gets primary user, user account & file manager to use for sandbox
38 | // Returns true
39 | bool getSettings(wstring &mainUser, wstring &sandboxUser, wstring &fileManager)
40 | {
41 | bool getSettingsWorked = false;
42 |
43 | wifstream fin;
44 | fin.open(SETTINGSFILE.c_str());
45 |
46 | if (fin)
47 | getline(fin, mainUser);
48 |
49 | if (fin)
50 | getline(fin, sandboxUser);
51 |
52 | if (fin)
53 | getline(fin, fileManager);
54 |
55 | if (fin && mainUser != L"" && sandboxUser != L"" && fileManager != L"")
56 | getSettingsWorked = true;
57 | else
58 | fin.clear();
59 |
60 | fin.close();
61 |
62 | return getSettingsWorked;
63 | }
64 |
65 | bool createDACL(SECURITY_ATTRIBUTES *newDACL)
66 | {
67 | bool createDACLWorked = false;
68 |
69 | wstring userDenySIDString, userallowSIDString;
70 |
71 | // Sets owner to Builtin/Administrators
72 | // Denies access to userToDeny
73 | // Gives full control to Builtin/Administrators
74 | // Gives read & execute access to userToAllow
75 | wstring newACE;
76 | newACE = L"D:(A;OICI;GA;;;SY)(A;OICI;GA;;;BA)";
77 |
78 | // createDACLWorked is true iff denyDACL is successfully set
79 | if (ConvertStringSecurityDescriptorToSecurityDescriptor(newACE.c_str(), SDDL_REVISION_1, &(newDACL->lpSecurityDescriptor), NULL))
80 | createDACLWorked = true;
81 |
82 | return createDACLWorked;
83 | }
84 |
85 | // Adds deny ACE entry for specified user
86 | // Returns true on successfull creation of security descriptor
87 | // Returns false otherwise
88 | bool createDACL(const wstring &userToAllow, SECURITY_ATTRIBUTES *newDACL, const wstring &userToDeny, bool isDesktop)
89 | {
90 | bool createDACLWorked = false;
91 |
92 | wstring userDenySIDString, userallowSIDString;
93 |
94 | // Must have a successful creation of user to allow or only admin will have access
95 | // Must either have a successful creation of user to deny or have no user to deny
96 | // No point in continuing otherwise
97 | if (!usernameToSIDString(userToAllow, userallowSIDString)
98 | || !usernameToSIDString(userToDeny, userDenySIDString))
99 | return createDACLWorked;
100 |
101 | // Sets owner to Builtin/Administrators
102 | // Denies access to userToDeny
103 | // Gives full control to Builtin/Administrators
104 | // Gives read & execute access to userToAllow
105 | wstring newACE;
106 | newACE = L"D:(D;OICI;GA;;;" + userDenySIDString + L")(A;OICI;GA;;;SY)(A;OICI;GA;;;BA)(A;OICI;GA;;;" + userallowSIDString + L")";
107 |
108 | // Gives desktop access to Modern apps
109 | if (isDesktop)
110 | newACE += L"(A;OICI;GA;;;S-1-15-2-1)";
111 |
112 | // createDACLWorked is true iff denyDACL is successfully set
113 | if (ConvertStringSecurityDescriptorToSecurityDescriptor(newACE.c_str(), SDDL_REVISION_1, &(newDACL->lpSecurityDescriptor), NULL))
114 | createDACLWorked = true;
115 |
116 | return createDACLWorked;
117 | }
118 |
119 | // Sets DACL and owner on object with specified handle
120 | // Returns true on successful setting of security info
121 | // Returns false otherwise
122 | bool setDACL(SECURITY_ATTRIBUTES newDACL, HANDLE objectHandle, SE_OBJECT_TYPE objectType)
123 | {
124 | bool setDACLWorked = false;
125 |
126 | BOOL existsACL = TRUE, isDefaultACL = TRUE;
127 | PACL DACLtoSet;
128 | PSID newOwner;
129 | ConvertStringSidToSid(L"BA", &newOwner); // SID for Builtin/Administrators
130 |
131 | // Sets the bit flag mask
132 | SECURITY_INFORMATION securityToSet;
133 | if (objectType == SE_KERNEL_OBJECT)
134 | securityToSet = OWNER_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION | LABEL_SECURITY_INFORMATION;
135 | else
136 | securityToSet = OWNER_SECURITY_INFORMATION | DACL_SECURITY_INFORMATION;
137 |
138 | // Pulls the DACL out of the newDACL structure
139 | // Sets the DACL of the object with specified handle
140 | // Function is not bool, this return value means success
141 | if (GetSecurityDescriptorDacl(newDACL.lpSecurityDescriptor, &existsACL, &DACLtoSet, &isDefaultACL)
142 | && SetSecurityInfo(objectHandle, objectType, securityToSet, newOwner, NULL, DACLtoSet, NULL) == ERROR_SUCCESS)
143 | setDACLWorked = true;
144 |
145 | return setDACLWorked;
146 | }
147 |
148 | bool setDefaultDACL(SECURITY_ATTRIBUTES newDACL, HANDLE &tokenHandle)
149 | {
150 | bool setDefaultDACLworked = false;
151 |
152 | PACL sandboxACLtoSet;
153 | BOOL existsACL = TRUE, isDefaultACL = TRUE;
154 |
155 | if (GetSecurityDescriptorDacl(newDACL.lpSecurityDescriptor, &existsACL, &sandboxACLtoSet, &isDefaultACL))
156 | {
157 | TOKEN_DEFAULT_DACL defaultDACL;
158 | defaultDACL.DefaultDacl = sandboxACLtoSet;
159 |
160 | if (SetTokenInformation(tokenHandle, TokenDefaultDacl, &defaultDACL, sizeof(defaultDACL)))
161 | setDefaultDACLworked = true;
162 | }
163 |
164 | return setDefaultDACLworked;
165 | }
166 |
167 | // Creates DACL that only gives access to admin and system
168 | // Sets userSIDString to SID wstring version of username
169 | // Returns true on successful completion of ConvertSidToStringSid(), false otherwise
170 | bool usernameToSIDString(const wstring &username, wstring &userSIDString)
171 | {
172 | bool usernameToSIDStringWorked = false;
173 |
174 | SID userSID[SECURITY_MAX_SID_SIZE];
175 | DWORD userSIDSize = SECURITY_MAX_SID_SIZE;
176 | DWORD domainNameSize = 0;
177 | SID_NAME_USE userType;
178 | LPTSTR LPuserSIDString = nullptr;
179 |
180 | // Get size of buffer needed for domainName
181 | LookupAccountName(NULL, username.c_str(), &userSID, &userSIDSize, NULL, &domainNameSize, &userType);
182 | TCHAR *domainName = new TCHAR[domainNameSize];
183 |
184 | // Create wstring version of SIDS for userToDenySID and userToAllowSID
185 | if (LookupAccountName(NULL, username.c_str(), &userSID, &userSIDSize, domainName, &domainNameSize, &userType)
186 | && ConvertSidToStringSid(&userSID, &LPuserSIDString))
187 | {
188 | userSIDString = LPuserSIDString;
189 | usernameToSIDStringWorked = true;
190 | // Needed after ConvertSidToStringSid()
191 | LocalFree(LPuserSIDString);
192 | }
193 |
194 | delete[] domainName;
195 |
196 | return usernameToSIDStringWorked;
197 | }
198 |
199 | // Don't want to echo back password
200 | bool keyboardEchoOff()
201 | {
202 | bool keyboardEchoOff = false;
203 |
204 | HANDLE consoleInputHandle = GetStdHandle(STD_INPUT_HANDLE);
205 | DWORD mode;
206 |
207 | if (GetConsoleMode(consoleInputHandle, &mode) && SetConsoleMode(consoleInputHandle, mode - ENABLE_ECHO_INPUT))
208 | keyboardEchoOff = true;
209 |
210 | return keyboardEchoOff;
211 | }
212 |
213 | bool getCredentials(const wstring &user, wstring &userCreds)
214 | {
215 | bool getCredentials = false;
216 |
217 | // Need credentials for sandboxed user
218 | wstring sandboxUserCred;
219 | wcout << L"Sandbox switched to secure desktop to enter credentials." << '\n' << endl;
220 | wcout << L"Enter password for " << user << ": ";
221 | if (getline(wcin, userCreds))
222 | getCredentials = true;
223 | wcout << '\n' << endl;
224 |
225 | return getCredentials;
226 | }
227 |
228 | bool launchProcessOnDesktop(wstring process, wstring desktop, bool resume)
229 | {
230 | bool launchProcessOnDesktop = false;
231 |
232 | if (!switchTo(desktop))
233 | return launchProcessOnDesktop;
234 |
235 | // Create new process on admin only desktop to get console there
236 | PROCESS_INFORMATION processInfo = { 0 };
237 | STARTUPINFOW processSettings = { 0 };
238 | processSettings.cb = sizeof(STARTUPINFOW);
239 |
240 | vector newDesktop(desktop.begin(), desktop.end());
241 | newDesktop.push_back(0);
242 | processSettings.lpDesktop = &newDesktop[0];
243 |
244 | if (CreateProcess(process.c_str(), NULL, NULL, NULL, FALSE, CREATE_NEW_CONSOLE | CREATE_SUSPENDED, NULL, NULL, &processSettings, &processInfo))
245 | launchProcessOnDesktop = true;
246 |
247 | if (resume)
248 | ResumeThread(processInfo.hThread);
249 |
250 | // Give console.exe time to fully start up
251 | WaitForSingleObject(processInfo.hProcess, 60000);
252 |
253 | return launchProcessOnDesktop;
254 | }
255 |
256 | // Function that launches file manager with impersonation token
257 | // Returns true on successful completion
258 | // Returns false otherwise
259 | bool launchFileManager(const wstring &userToAllow, const wstring &userToDeny, const wstring &fileManager, const wstring &desktop, bool isExplorer)
260 | {
261 | bool launchFileManagerWorked = false;
262 |
263 | wstring sandboxUserCred;
264 |
265 | // Switch to admin only desktop to get password
266 | // Get a console on new desktop
267 | // Get password
268 | switchTo(ADMIN);
269 | if (!getCredentials(userToAllow, sandboxUserCred))
270 | return launchFileManagerWorked;
271 |
272 | // Unused Code to set desktop in STARTUPINFOW, here for documentation
273 | // Undocumented feature of CreateProcessWithLogonW() causes it to assing new logon SID
274 | // when desktop is specified, causing GUI problems
275 | // vector newDesktop(desktop.begin(), desktop.end());
276 | // newDesktop.push_back(0);
277 | // processSettings.lpDesktop = &newDesktop[0];
278 |
279 | // Switch to indicated desktop to launch program
280 | switchTo(desktop);
281 |
282 | // By the power of Grayskull . . . I HAVE THE POWER!!!
283 | SetPrivilege(SE_DEBUG_NAME, TRUE);
284 |
285 | // Start Launcher as new user to get token
286 | // Using CreateProcessWithLogonW() to retain Logon SID
287 | PROCESS_INFORMATION launcherInfo = { 0 };
288 | STARTUPINFOW launcherSettings = { 0 };
289 | launcherSettings.cb = sizeof(STARTUPINFOW);
290 | wstring toStart;
291 |
292 | // Creating new process with CreateProcessWithLogonW() to get impersonation of specified user with old Logon SID
293 | if (isExplorer)
294 | {
295 | toStart = L"C:\\Windows\\Explorer.exe";
296 |
297 | // Get a handle to explorer.exe
298 | // Return on failure
299 | DWORD explorerID;
300 | HWND explorerWindow = FindWindow(L"Shell_TrayWnd", NULL);
301 | if (explorerWindow == NULL)
302 | return launchFileManagerWorked;
303 | GetWindowThreadProcessId(explorerWindow, &explorerID);
304 | HANDLE explorerHANDLE = OpenProcess(PROCESS_ALL_ACCESS, FALSE, explorerID);
305 | if (explorerHANDLE == NULL)
306 | return launchFileManagerWorked;
307 |
308 | // Try to close Explorer.exe using Window message exit code
309 | // If that fails, terminate process
310 | if (!PostMessage(explorerWindow, WM_USER + 436, 0, 0))
311 | TerminateProcess(explorerHANDLE, 0);
312 |
313 | // Give shell time to exit fully
314 | // WaitForSingleObject() isn't working correctly with explorer.exe on Windows 10
315 | DWORD exitCode;
316 | int count = 0;
317 | do
318 | {
319 | Sleep(500);
320 | GetExitCodeProcess(explorerHANDLE, &exitCode);
321 | count++;
322 | } while (exitCode == STILL_ACTIVE && count < 10);
323 |
324 | if (!CreateProcessWithLogonW(userToAllow.c_str(), NULL, sandboxUserCred.c_str(), LOGON_WITH_PROFILE, KEEPALIVE.c_str(), NULL, CREATE_NEW_CONSOLE, NULL, NULL, &launcherSettings, &launcherInfo))
325 | return launchFileManagerWorked;
326 | }
327 | else
328 | {
329 | toStart = fileManager;
330 |
331 | if (!CreateProcessWithLogonW(userToAllow.c_str(), NULL, sandboxUserCred.c_str(), LOGON_WITH_PROFILE, KEEPALIVE.c_str(), NULL, CREATE_NEW_CONSOLE, NULL, NULL, &launcherSettings, &launcherInfo))
332 | return launchFileManagerWorked;
333 | }
334 |
335 | // Gives the keepAlive program time to start fully
336 | WaitForSingleObject(launcherInfo.hProcess, 5000);
337 |
338 | // Code to impersonate using LogonUser() left for documentation
339 | // Creates new Logon SID
340 | // LogonUser(userToAllow.c_str(), NULL, sandboxUserCred.c_str(), LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, &tokenHandle)
341 |
342 | // Clear password as soon as possible
343 | SecureZeroMemory(&sandboxUserCred, sandboxUserCred.size());
344 |
345 | PROCESS_INFORMATION processInfo = { 0 };
346 | STARTUPINFOW processSettings = { 0 };
347 | processSettings.cb = sizeof(STARTUPINFOW);
348 | SECURITY_ATTRIBUTES processDACL;
349 | HANDLE processTokenHandle = { 0 };
350 | HANDLE tokenHandle = { 0 };
351 |
352 | // Taking token from CreateProcessWithLogonW(), duplicating it, setting new default DACL and using that to launch file manager
353 | if (createDACL(userToAllow, &processDACL, userToDeny)
354 | && OpenProcessToken(launcherInfo.hProcess, MAXIMUM_ALLOWED, &processTokenHandle)
355 | && DuplicateTokenEx(processTokenHandle, MAXIMUM_ALLOWED, &processDACL, SecurityDelegation, TokenPrimary, &tokenHandle)
356 | && setDefaultDACL(processDACL, tokenHandle)
357 | && CreateProcessWithTokenW(tokenHandle, NULL, toStart.c_str(), NULL, 0, 0, NULL, &processSettings, &processInfo))
358 | launchFileManagerWorked = true;
359 |
360 | // Let the power return.
361 | SetPrivilege(SE_DEBUG_NAME, FALSE);
362 |
363 | // Clean up
364 | // ResumeThread(launcherInfo.hThread);
365 | LocalFree(processDACL.lpSecurityDescriptor);
366 | CloseHandle(launcherInfo.hThread);
367 | CloseHandle(launcherInfo.hProcess);
368 | CloseHandle(tokenHandle);
369 |
370 | // These were only created if everything worked
371 | if (launchFileManagerWorked)
372 | {
373 | CloseHandle(processInfo.hThread);
374 | CloseHandle(processInfo.hProcess);
375 | }
376 |
377 | return launchFileManagerWorked;
378 | }
379 |
380 | // Takes name of desktop to be created and security attribute structure to be applied to desktop
381 | // Returns true if creation successful
382 | // Returns false otherwise
383 | bool opener(const wstring &sandboxD, SECURITY_ATTRIBUTES* denyDACL, HDESK &createSandbox)
384 | {
385 | bool openerWorked = false;
386 |
387 | // true iff a handle to sandboxD desktop is returned
388 | createSandbox = CreateDesktop(sandboxD.c_str(), NULL, NULL, 0, GENERIC_ALL, denyDACL);
389 |
390 | if (createSandbox != NULL)
391 | openerWorked = true;
392 |
393 | return openerWorked;
394 | }
395 |
396 | // Takes name of desktop to be created and security attribute structure to be applied to desktop
397 | // Returns true if creation successful
398 | // Returns false otherwise
399 | bool opener(const wstring &windowStation, SECURITY_ATTRIBUTES* allowDACL, HWINSTA &windowStationHandle)
400 | {
401 | bool openerWorked = false;
402 |
403 | // true iff a handle to sandboxD desktop is returned
404 | windowStationHandle = CreateWindowStation(windowStation.c_str(), NULL, GENERIC_ALL, allowDACL);
405 |
406 | if (windowStationHandle != NULL && SetProcessWindowStation(windowStationHandle))
407 | openerWorked = true;
408 |
409 | return openerWorked;
410 | }
411 |
412 | // Returns name of currently active desktop
413 | wstring currentDesktopName()
414 | {
415 |
416 | HDESK currentDesktop = OpenInputDesktop(0, FALSE, DESKTOP_SWITCHDESKTOP);
417 | wstring currentNameString;
418 |
419 | // if currentDesktop handle is valid, get name of currentDesktop
420 | if (currentDesktop != NULL)
421 | {
422 | const int OBJECTNAME = 2; // Tells GetUserObjectInformation() to return name of desktop
423 | DWORD sizeNeeded = 0;
424 | // Get size of buffer needed
425 | GetUserObjectInformation(currentDesktop, OBJECTNAME, NULL, NULL, &sizeNeeded);
426 |
427 | // Create buffer of correct size
428 | TCHAR *currentName = new TCHAR[sizeNeeded];
429 | // Get name
430 | if (GetUserObjectInformation(currentDesktop, OBJECTNAME, currentName, sizeNeeded, NULL))
431 | currentNameString = currentName;
432 |
433 | delete[] currentName;
434 |
435 | CloseDesktop(currentDesktop);
436 | }
437 |
438 | return currentNameString;
439 | }
440 |
441 | // Returns name of currently window station
442 | wstring currentWindowStationName()
443 | {
444 |
445 | HWINSTA currentWindowStation = GetProcessWindowStation();
446 |
447 | wstring currentNameString;
448 |
449 | // if currentDesktop handle is valid, get name of currentDesktop
450 | if (currentWindowStation != NULL)
451 | {
452 | const int OBJECTNAME = 2; // Tells GetUserObjectInformation() to return name of desktop
453 | DWORD sizeNeeded = 0;
454 | // Get size of buffer needed
455 | GetUserObjectInformation(currentWindowStation, OBJECTNAME, NULL, NULL, &sizeNeeded);
456 |
457 | // Create buffer of correct size
458 | TCHAR *currentName = new TCHAR[sizeNeeded];
459 | // Get name
460 | if (GetUserObjectInformation(currentWindowStation, OBJECTNAME, currentName, sizeNeeded, NULL))
461 | currentNameString = currentName;
462 |
463 | delete[] currentName;
464 |
465 | CloseWindowStation(currentWindowStation);
466 | }
467 |
468 | return currentNameString;
469 | }
470 |
471 | // Switches process and display to indicated destkop
472 | bool switchTo(const wstring &newDesktop, const wstring &newWindowStation)
473 | {
474 | bool switchToWorked = false;
475 |
476 | // Gets handle to workstation/desktop to switch to
477 | HWINSTA windowStationHandle = OpenWindowStation(newWindowStation.c_str(), FALSE, GENERIC_ALL);
478 | if (!SetProcessWindowStation(windowStationHandle))
479 | return switchToWorked;
480 | else
481 | CloseWindowStation(windowStationHandle);
482 |
483 | HDESK newDesktopHandle = OpenDesktop(newDesktop.c_str(), 0, FALSE, GENERIC_ALL);
484 |
485 | // switchToWorked is true iff SwitchDesktop worked
486 | if (newDesktopHandle != NULL && SetThreadDesktop(newDesktopHandle) && SwitchDesktop(newDesktopHandle))
487 | {
488 | CloseDesktop(newDesktopHandle);
489 | switchToWorked = true;
490 | }
491 |
492 | return switchToWorked;
493 | }
494 |
495 | // Sets and removes SE_DEBUG privilege
496 | // Code mostly straight from MSDN example
497 | BOOL SetPrivilege(
498 | LPCTSTR Privilege, // Privilege to enable/disable
499 | BOOL bEnablePrivilege // TRUE to enable. FALSE to disable
500 | )
501 | {
502 | HANDLE hToken;
503 | OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &hToken);
504 |
505 | TOKEN_PRIVILEGES tp = { 0 };
506 | // Initialize everything to zero
507 | LUID luid;
508 | DWORD cb = sizeof(TOKEN_PRIVILEGES);
509 | if (!LookupPrivilegeValue(NULL, Privilege, &luid))
510 | return FALSE;
511 | tp.PrivilegeCount = 1;
512 | tp.Privileges[0].Luid = luid;
513 | if (bEnablePrivilege) {
514 | tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
515 | }
516 | else {
517 | tp.Privileges[0].Attributes = 0;
518 | }
519 | AdjustTokenPrivileges(hToken, FALSE, &tp, cb, NULL, NULL);
520 |
521 | CloseHandle(hToken);
522 |
523 | if (GetLastError() != ERROR_SUCCESS)
524 | return FALSE;
525 |
526 | return TRUE;
527 | }
528 |
--------------------------------------------------------------------------------
/Source/Common/Sandbox.h:
--------------------------------------------------------------------------------
1 | /*
2 | ProtectedDesktops:
3 | A program that uses native Windows features to create a fully sandboxed environment on Windows.
4 |
5 | This program was written as part of an undergraduate research project
6 | presented at the Honors Transfer Council of California, 26 Mar. 2016.
7 |
8 | Copyright 2016 Joshua DuFault
9 |
10 |
11 | This file is part of ProtectedDesktops.
12 |
13 | ProtectedDesktops is free software: you can redistribute it and/or modify
14 | it under the terms of the GNU General Public License as published by
15 | the Free Software Foundation, either version 3 of the License, or
16 | (at your option) any later version.
17 |
18 | ProtectedDesktops is distributed in the hope that it will be useful,
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 | GNU General Public License for more details.
22 |
23 | You should have received a copy of the GNU General Public License
24 | along with ProtectedDesktops. If not, see .
25 |
26 | */
27 |
28 | #ifndef SANDBOX_H
29 | #define SANDBOX_H
30 |
31 | // Requires unicode
32 | #ifndef UNICODE
33 | #define UNICODE
34 | #endif
35 | #ifndef _UNICODE
36 | #define _UNICODE
37 | #endif
38 |
39 | #include
40 | #include
41 | #include
42 | #include
43 |
44 | #include
45 | #include
46 | #include
47 |
48 | const std::wstring SANDBOX = L"SandboxedDesktop";
49 | const std::wstring MAIN = L"Default";
50 | const std::wstring ADMIN = L"AdminOnlyDesktop";
51 | const std::wstring WINDOWSTATIONMAIN = L"WinSta0";
52 | const std::wstring CONSOLEAPP = L"Console.exe";
53 | const std::wstring KEEPALIVE = L"KeepAlive.exe";
54 | const std::wstring SETTINGSFILE = L"settings.ini";
55 |
56 | bool getSettings(std::wstring &mainUser, std::wstring &sandboxUser, std::wstring &fileManager);
57 |
58 | bool createDACL(SECURITY_ATTRIBUTES *newDACL);
59 | bool createDACL(const std::wstring &userToAllow, SECURITY_ATTRIBUTES *denyDACL, const std::wstring &userToDeny, bool isDesktop = false);
60 | bool setDACL(SECURITY_ATTRIBUTES newDACL, HANDLE objectHandle, SE_OBJECT_TYPE objectType);
61 | bool setDefaultDACL(SECURITY_ATTRIBUTES newDACL, HANDLE &tokenHandle);
62 | bool usernameToSIDString(const std::wstring &username, std::wstring &userSIDString);
63 |
64 | bool keyboardEchoOff();
65 | bool getCredentials(const std::wstring &user, std::wstring &userCreds);
66 |
67 | bool launchProcessOnDesktop(std::wstring process, std::wstring desktop, bool resume);
68 | bool launchFileManager(const std::wstring &mainUser, const std::wstring &sandboxUser, const std::wstring &fileManager, const std::wstring &desktop, bool isExplorer);
69 |
70 | bool opener(const std::wstring &sandboxD, SECURITY_ATTRIBUTES* denyDACL, HDESK &createSandbox);
71 | bool opener(const std::wstring &sandboxD, SECURITY_ATTRIBUTES* denyDACL, HWINSTA &createSandbox); // Not currently used, provided for potential future use
72 |
73 | std::wstring currentDesktopName();
74 | std::wstring currentWindowStationName(); // Not currently used, included for potential future use
75 | bool switchTo(const std::wstring &newDesktop, const std::wstring &newWindowStation = WINDOWSTATIONMAIN);
76 |
77 | BOOL SetPrivilege(LPCTSTR Privilege, BOOL bEnablePrivilege);
78 |
79 | #endif
80 |
--------------------------------------------------------------------------------
/Source/Console/Console.cpp:
--------------------------------------------------------------------------------
1 | /*
2 | ProtectedDesktops:
3 | A program that uses native Windows features to create a fully sandboxed environment on Windows.
4 |
5 | This program was written as part of an undergraduate research project
6 | presented at the Honors Transfer Council of California, 26 Mar. 2016.
7 |
8 | Copyright 2016 Joshua DuFault
9 |
10 |
11 | This file is part of ProtectedDesktops.
12 |
13 | ProtectedDesktops is free software: you can redistribute it and/or modify
14 | it under the terms of the GNU General Public License as published by
15 | the Free Software Foundation, either version 3 of the License, or
16 | (at your option) any later version.
17 |
18 | ProtectedDesktops is distributed in the hope that it will be useful,
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 | GNU General Public License for more details.
22 |
23 | You should have received a copy of the GNU General Public License
24 | along with ProtectedDesktops. If not, see .
25 |
26 | */
27 |
28 |
29 | #ifndef WIN32_LEAN_AND_MEAN
30 | #define WIN32_LEAN_AND_MEAN
31 | #endif
32 |
33 | // Using std MIN and MAX definitions rather than windows.h ones
34 | #ifndef NOMINMAX
35 | #define NOMINMAX
36 | #endif
37 |
38 | #include "Sandbox.h"
39 | using namespace std;
40 |
41 | // Returns 0 if sandbox created successfully
42 | // Returns 1 if sandbox creation failed
43 | int wmain()
44 | {
45 | bool sandboxFail = true;
46 |
47 | wstring userMain, userSandbox, fileManagerPath;
48 | // Reads in settings information from file
49 | // No point in continuing without usable settings
50 | if (!getSettings(userMain, userSandbox, fileManagerPath))
51 | return sandboxFail;
52 |
53 | SECURITY_ATTRIBUTES defaultDACL, sandboxDACL;
54 | // SECURITY_ATTRIBUTES WinSta0DACL; // Code to set window station DACLs left in for potential future use
55 | // Creates custom DACL
56 | // Sets owner, denies, and allows
57 | // Sandbox relies on DACLs, no point in continuing if they're not usable
58 | if (!createDACL(userMain, &defaultDACL, userSandbox, true)
59 | || !createDACL(userSandbox, &sandboxDACL, userMain, true))
60 | // || !createDACL(userMain, &WinSta0DACL, userSandbox))
61 | return sandboxFail;
62 |
63 | HDESK defaultHandle = NULL, sandboxHandle = NULL;
64 | // HWINSTA WinSta0Handle = NULL;
65 | // Creates desktop with specified DACL
66 | // If desktop already exists, gets handle for desktop
67 | // Desktop handles needed to access them, no point in continuing without handles
68 | if (!opener(MAIN, &defaultDACL, defaultHandle)
69 | || !opener(SANDBOX, &sandboxDACL, sandboxHandle))
70 | // || !opener(WINDOWSTATIONMAIN, &WinSta0DACL, WinSta0Handle))
71 | return sandboxFail;
72 |
73 | // Need more power to set DACL for window station
74 | // SetPrivilege(SE_DEBUG_NAME, TRUE);
75 |
76 | // Sets DACL in case objects already existed
77 | // If either failed, can't be sure desktops have secure settings
78 | // Sets DACL denying main user, makes DACL propigate to children
79 | // Sets DACL for explorer.exe on main desktop denying sandbox user
80 | if (!setDACL(defaultDACL, defaultHandle, SE_WINDOW_OBJECT)
81 | || !setDACL(sandboxDACL, sandboxHandle, SE_WINDOW_OBJECT))
82 | // || !setDACL(WinSta0DACL, WinSta0Handle, SE_WINDOW_OBJECT))
83 | return sandboxFail;
84 |
85 | // Revert privilege
86 | // SetPrivilege(SE_DEBUG_NAME, FALSE);
87 |
88 | // Clean up no longer needed data
89 | // Use LocalFree to free the returned buffer created by
90 | // ConvertStringSecurityDescriptorToSecurityDescriptor()
91 | // on successful completion of createDACL()
92 | LocalFree(defaultDACL.lpSecurityDescriptor);
93 | LocalFree(sandboxDACL.lpSecurityDescriptor);
94 | // LocalFree(WinSta0DACL.lpSecurityDescriptor);
95 |
96 | // Don't echo password back
97 | if (!keyboardEchoOff())
98 | {
99 | switchTo(MAIN);
100 | return sandboxFail;
101 | }
102 |
103 | // Launch file manager on main desktop with default DACL
104 | // then jump to sandboxed desktop to launch sandboxed file manager
105 | if (launchFileManager(userMain, userSandbox, fileManagerPath, MAIN, true)
106 | && launchFileManager(userSandbox, userMain, fileManagerPath, SANDBOX, false))
107 | {
108 | switchTo(ADMIN);
109 | wcout << L"Sandbox created successfully." << L"\n\n"
110 | << L"Press Enter to exit: ";
111 | cin.ignore(numeric_limits::max(), L'\n');
112 | sandboxFail = false;
113 | }
114 |
115 | // End by going back home
116 | switchTo(MAIN);
117 |
118 | // Handles not needed
119 | CloseDesktop(defaultHandle);
120 | CloseDesktop(sandboxHandle);
121 | // CloseWindowStation(WinSta0Handle);
122 |
123 | return sandboxFail;
124 | }
125 |
--------------------------------------------------------------------------------
/Source/Console/Console.vcxproj:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
5 | Debug
6 | Win32
7 |
8 |
9 | Release
10 | Win32
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 | {67B60B48-0BB3-448D-9708-0FB80F60430B}
19 | Console
20 |
21 |
22 |
23 | Application
24 | true
25 | v120
26 | MultiByte
27 |
28 |
29 | Application
30 | false
31 | v120
32 | true
33 | MultiByte
34 |
35 |
36 |
37 |
38 |
39 |
40 |
41 |
42 |
43 |
44 |
45 |
46 |
47 |
48 | Level3
49 | Disabled
50 | true
51 |
52 |
53 | true
54 |
55 |
56 |
57 |
58 | Level3
59 | MaxSpeed
60 | true
61 | true
62 | true
63 | C:\Users\Josh\Documents\Visual Studio 2013\Projects\ProtectedDesktops\Common;%(AdditionalIncludeDirectories)
64 | MultiThreaded
65 |
66 |
67 | true
68 | true
69 | true
70 | false
71 | RequireAdministrator
72 |
73 |
74 |
75 |
76 |
77 |
--------------------------------------------------------------------------------
/Source/Console/Console.vcxproj.filters:
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1 |
2 |
3 |
4 |
5 | {4FC737F1-C7A5-4376-A066-2A32D752A2FF}
6 | cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx
7 |
8 |
9 | {93995380-89BD-4b04-88EB-625FBE52EBFB}
10 | h;hh;hpp;hxx;hm;inl;inc;xsd
11 |
12 |
13 | {67DA6AB6-F800-4c08-8B7A-83BB121AAD01}
14 | rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms
15 |
16 |
17 |
18 |
19 | Source Files
20 |
21 |
22 | Source Files
23 |
24 |
25 |
--------------------------------------------------------------------------------
/Source/DesktopSwitcher/DesktopSwitcher.cpp:
--------------------------------------------------------------------------------
1 | /*
2 | ProtectedDesktops:
3 | A program that uses native Windows features to create a fully sandboxed environment on Windows.
4 |
5 | This program was written as part of an undergraduate research project
6 | presented at the Honors Transfer Council of California, 26 Mar. 2016.
7 |
8 | Copyright 2016 Joshua DuFault
9 |
10 |
11 | This file is part of ProtectedDesktops.
12 |
13 | ProtectedDesktops is free software: you can redistribute it and/or modify
14 | it under the terms of the GNU General Public License as published by
15 | the Free Software Foundation, either version 3 of the License, or
16 | (at your option) any later version.
17 |
18 | ProtectedDesktops is distributed in the hope that it will be useful,
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 | GNU General Public License for more details.
22 |
23 | You should have received a copy of the GNU General Public License
24 | along with ProtectedDesktops. If not, see .
25 |
26 | */
27 |
28 |
29 | #ifndef WIN32_LEAN_AND_MEAN
30 | #define WIN32_LEAN_AND_MEAN
31 | #endif
32 |
33 | // Using std MIN and MAX definitions rather than windows.h ones
34 | #ifndef NOMINMAX
35 | #define NOMINMAX
36 | #endif
37 |
38 | #include "Sandbox.h"
39 | using namespace std;
40 |
41 | int main()
42 | {
43 | wstring currentDesktop = currentDesktopName();
44 |
45 | // If current desktop is main, switch to sandboxed desktop
46 | if (currentDesktop == MAIN)
47 | switchTo(SANDBOX);
48 | else
49 | switchTo(MAIN);
50 |
51 | return 0;
52 | }
53 |
--------------------------------------------------------------------------------
/Source/DesktopSwitcher/DesktopSwitcher.vcxproj:
--------------------------------------------------------------------------------
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/Source/KeepAlive/KeepAlive.cpp:
--------------------------------------------------------------------------------
1 | /*
2 | ProtectedDesktops:
3 | A program that uses native Windows features to create a fully sandboxed environment on Windows.
4 |
5 | This program was written as part of an undergraduate research project
6 | presented at the Honors Transfer Council of California, 26 Mar. 2016.
7 |
8 | Copyright 2016 Joshua DuFault
9 |
10 |
11 | This file is part of ProtectedDesktops.
12 |
13 | ProtectedDesktops is free software: you can redistribute it and/or modify
14 | it under the terms of the GNU General Public License as published by
15 | the Free Software Foundation, either version 3 of the License, or
16 | (at your option) any later version.
17 |
18 | ProtectedDesktops is distributed in the hope that it will be useful,
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 | GNU General Public License for more details.
22 |
23 | You should have received a copy of the GNU General Public License
24 | along with ProtectedDesktops. If not, see .
25 |
26 | */
27 |
28 | #ifndef WIN32_LEAN_AND_MEAN
29 | #define WIN32_LEAN_AND_MEAN
30 | #endif
31 |
32 | // Using std MIN and MAX definitions rather than windows.h ones
33 | #ifndef NOMINMAX
34 | #define NOMINMAX
35 | #endif
36 |
37 | #include "Sandbox.h"
38 | using namespace std;
39 |
40 | // Just here to keep a desktop alive or get a token from
41 | int wmain()
42 | {
43 |
44 | cout << "Desktop set. Press any key to continue: ";
45 | cin.get();
46 |
47 | return 0;
48 | }
49 |
--------------------------------------------------------------------------------
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/Source/ProtectedDesktops.cpp:
--------------------------------------------------------------------------------
1 | /*
2 | ProtectedDesktops:
3 | A program that uses native Windows features to create a fully sandboxed environment on Windows.
4 |
5 | This program was written as part of an undergraduate research project
6 | presented at the Honors Transfer Council of California, 26 Mar. 2016.
7 |
8 | Copyright 2016 Joshua DuFault
9 |
10 |
11 | This file is part of ProtectedDesktops.
12 |
13 | ProtectedDesktops is free software: you can redistribute it and/or modify
14 | it under the terms of the GNU General Public License as published by
15 | the Free Software Foundation, either version 3 of the License, or
16 | (at your option) any later version.
17 |
18 | ProtectedDesktops is distributed in the hope that it will be useful,
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 | GNU General Public License for more details.
22 |
23 | You should have received a copy of the GNU General Public License
24 | along with ProtectedDesktops. If not, see .
25 |
26 | */
27 |
28 |
29 | #ifndef WIN32_LEAN_AND_MEAN
30 | #define WIN32_LEAN_AND_MEAN
31 | #endif
32 |
33 | #include "Sandbox.h"
34 | using namespace std;
35 |
36 | // Returns 0 if sandbox created successfully
37 | // Returns 1 if sandbox creation failed
38 | int wmain()
39 | {
40 | bool sandboxFail = true;
41 |
42 | SECURITY_ATTRIBUTES adminOnlyDACL;
43 | // Creates custom DACL
44 | // Sets owner, denies, and allows
45 | // Sandbox relies on DACLs, no point in continuing if they're not usable
46 | if (!createDACL(&adminOnlyDACL))
47 | return sandboxFail;
48 |
49 | HDESK adminOnlyHandle = NULL;
50 | // Creates desktop with specified DACL
51 | // If desktop already exists, gets handle for desktop
52 | // Desktop handles needed to access them, no point in continuing without handles
53 | if (!opener(ADMIN, &adminOnlyDACL, adminOnlyHandle))
54 | return sandboxFail;
55 |
56 | // Sets DACL in case objects already existed
57 | // If either failed, can't be sure desktops have secure settings
58 | // Sets DACL denying main user, makes DACL propigate to children
59 | // Sets DACL for explorer.exe on main desktop denying sandbox user
60 | if (!setDACL(adminOnlyDACL, adminOnlyHandle, SE_WINDOW_OBJECT))
61 | return sandboxFail;
62 |
63 | // Clean up no longer needed data
64 | // Use LocalFree to free the returned buffer created by
65 | // ConvertStringSecurityDescriptorToSecurityDescriptor()
66 | // on successful completion of createDACL()
67 | LocalFree(adminOnlyDACL.lpSecurityDescriptor);
68 |
69 | cout << "Working..." << endl;
70 |
71 | // Launch next part
72 | if (launchProcessOnDesktop(CONSOLEAPP, ADMIN, true))
73 | sandboxFail = false;
74 |
75 | // Handles not needed
76 | CloseDesktop(adminOnlyHandle);
77 |
78 | return sandboxFail;
79 | }
80 |
--------------------------------------------------------------------------------
/Source/ProtectedDesktops.sln:
--------------------------------------------------------------------------------
1 |
2 | Microsoft Visual Studio Solution File, Format Version 12.00
3 | # Visual Studio 2013
4 | VisualStudioVersion = 12.0.31101.0
5 | MinimumVisualStudioVersion = 10.0.40219.1
6 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ProtectedDesktops", "ProtectedDesktops.vcxproj", "{307BB0D9-4FFD-45B9-B9F9-C84743B9F12E}"
7 | EndProject
8 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "KeepAlive", "KeepAlive\KeepAlive.vcxproj", "{949E44D1-8F8F-4458-B6C3-B67DD40E0DD9}"
9 | EndProject
10 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Console", "Console\Console.vcxproj", "{67B60B48-0BB3-448D-9708-0FB80F60430B}"
11 | EndProject
12 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "DesktopSwitcher", "DesktopSwitcher\DesktopSwitcher.vcxproj", "{5A45FEE3-53D0-4CA9-8C6F-7AC5CA20E547}"
13 | EndProject
14 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "RunMe", "RunMe\RunMe.vcxproj", "{341FDF18-5101-4BE7-BEC6-9D27A3D556F0}"
15 | EndProject
16 | Global
17 | GlobalSection(SolutionConfigurationPlatforms) = preSolution
18 | Debug|Win32 = Debug|Win32
19 | Release|Win32 = Release|Win32
20 | EndGlobalSection
21 | GlobalSection(ProjectConfigurationPlatforms) = postSolution
22 | {307BB0D9-4FFD-45B9-B9F9-C84743B9F12E}.Debug|Win32.ActiveCfg = Debug|Win32
23 | {307BB0D9-4FFD-45B9-B9F9-C84743B9F12E}.Debug|Win32.Build.0 = Debug|Win32
24 | {307BB0D9-4FFD-45B9-B9F9-C84743B9F12E}.Release|Win32.ActiveCfg = Release|Win32
25 | {307BB0D9-4FFD-45B9-B9F9-C84743B9F12E}.Release|Win32.Build.0 = Release|Win32
26 | {949E44D1-8F8F-4458-B6C3-B67DD40E0DD9}.Debug|Win32.ActiveCfg = Debug|Win32
27 | {949E44D1-8F8F-4458-B6C3-B67DD40E0DD9}.Debug|Win32.Build.0 = Debug|Win32
28 | {949E44D1-8F8F-4458-B6C3-B67DD40E0DD9}.Release|Win32.ActiveCfg = Release|Win32
29 | {949E44D1-8F8F-4458-B6C3-B67DD40E0DD9}.Release|Win32.Build.0 = Release|Win32
30 | {67B60B48-0BB3-448D-9708-0FB80F60430B}.Debug|Win32.ActiveCfg = Debug|Win32
31 | {67B60B48-0BB3-448D-9708-0FB80F60430B}.Debug|Win32.Build.0 = Debug|Win32
32 | {67B60B48-0BB3-448D-9708-0FB80F60430B}.Release|Win32.ActiveCfg = Release|Win32
33 | {67B60B48-0BB3-448D-9708-0FB80F60430B}.Release|Win32.Build.0 = Release|Win32
34 | {5A45FEE3-53D0-4CA9-8C6F-7AC5CA20E547}.Debug|Win32.ActiveCfg = Debug|Win32
35 | {5A45FEE3-53D0-4CA9-8C6F-7AC5CA20E547}.Debug|Win32.Build.0 = Debug|Win32
36 | {5A45FEE3-53D0-4CA9-8C6F-7AC5CA20E547}.Release|Win32.ActiveCfg = Release|Win32
37 | {5A45FEE3-53D0-4CA9-8C6F-7AC5CA20E547}.Release|Win32.Build.0 = Release|Win32
38 | {341FDF18-5101-4BE7-BEC6-9D27A3D556F0}.Debug|Win32.ActiveCfg = Debug|Win32
39 | {341FDF18-5101-4BE7-BEC6-9D27A3D556F0}.Debug|Win32.Build.0 = Debug|Win32
40 | {341FDF18-5101-4BE7-BEC6-9D27A3D556F0}.Release|Win32.ActiveCfg = Release|Win32
41 | {341FDF18-5101-4BE7-BEC6-9D27A3D556F0}.Release|Win32.Build.0 = Release|Win32
42 | EndGlobalSection
43 | GlobalSection(SolutionProperties) = preSolution
44 | HideSolutionNode = FALSE
45 | EndGlobalSection
46 | EndGlobal
47 |
--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
/Source/RunMe/RunMe.cpp:
--------------------------------------------------------------------------------
1 | /*
2 | ProtectedDesktops:
3 | A program that uses native Windows features to create a fully sandboxed environment on Windows.
4 |
5 | This program was written as part of an undergraduate research project
6 | presented at the Honors Transfer Council of California, 26 Mar. 2016.
7 |
8 | Copyright 2016 Joshua DuFault
9 |
10 |
11 | This file is part of ProtectedDesktops.
12 |
13 | ProtectedDesktops is free software: you can redistribute it and/or modify
14 | it under the terms of the GNU General Public License as published by
15 | the Free Software Foundation, either version 3 of the License, or
16 | (at your option) any later version.
17 |
18 | ProtectedDesktops is distributed in the hope that it will be useful,
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 | GNU General Public License for more details.
22 |
23 | You should have received a copy of the GNU General Public License
24 | along with ProtectedDesktops. If not, see .
25 |
26 | */
27 |
28 | #ifndef WIN32_LEAN_AND_MEAN
29 | #define WIN32_LEAN_AND_MEAN
30 | #endif
31 |
32 | // Using std MIN and MAX definitions rather than windows.h ones
33 | #ifndef NOMINMAX
34 | #define NOMINMAX
35 | #endif
36 |
37 | #include "Sandbox.h"
38 | using namespace std;
39 |
40 |
41 | // Seperate launcher is a workaround in Windows 8 & 10
42 | // Launching console program creates conhost.exe as a child process which prevents SetThreadDesktop() from working
43 | // Using a launcher keeps conhost.exe attached to the launcher
44 | int wmain()
45 | {
46 | PROCESS_INFORMATION processInfo = { 0 };
47 | STARTUPINFOW processSettings = { 0 };
48 | processSettings.cb = sizeof(STARTUPINFOW);
49 |
50 | int choice = 0;
51 |
52 | cout << "Protected Desktops: A Sandboxing Program" << endl;
53 |
54 | do
55 | {
56 | cout << '\n'
57 | << "Pick an option:" << '\n'
58 | << "1: Create Sandbox" << '\n'
59 | << "2: Switch desktops" << '\n'
60 | << "3: Close Sandbox (forcefully closes any open programs)" << '\n'
61 | << "4: Exit" << '\n'
62 | << "Selection: "
63 | << flush;
64 |
65 | cin >> choice;
66 |
67 | if (cin.fail())
68 | {
69 | cin.clear();
70 | choice = 0;
71 | }
72 |
73 | cin.ignore(numeric_limits::max(), L'\n');
74 |
75 | wstring process;
76 | if (choice == 1)
77 | process = L"ProtectedDesktops.exe";
78 | else if (choice == 2)
79 | process = L"DesktopSwitcher.exe";
80 | else if (choice == 3)
81 | process = L"CloseSandbox.bat";
82 | else if (choice == 0 || choice == 4)
83 | continue;
84 |
85 |
86 | if (CreateProcess(process.c_str(), NULL, NULL, NULL, FALSE, DETACHED_PROCESS, NULL, NULL, &processSettings, &processInfo))
87 | {
88 | cout << "Working..." << endl;
89 | WaitForSingleObject(processInfo.hProcess, 60000);
90 | }
91 | else
92 | cout << '\n' << "Error. Try again." << '\n';
93 |
94 | } while (choice != 4);
95 |
96 | return 0;
97 | }
98 |
--------------------------------------------------------------------------------
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/Windows8&10/ReadMe.txt:
--------------------------------------------------------------------------------
1 | ProtectedDesktops:
2 | A program that uses native Windows features to create a fully sandboxed environment on Windows.
3 | (Special instructions for Windows 8 & 10)
4 |
5 |
6 | This program was written as part of an undergraduate research project
7 | presented at the Honors Transfer Council of California, 26 Mar. 2016.
8 |
9 |
10 | Copyright 2016 Joshua DuFault
11 |
12 | Contact: Josh.DuFault@gmail.com
13 |
14 |
15 | Version 0.2
16 |
17 | This program is in beta. It has been tested on Windows 7 x64, Windows 8 x64, and Windows 10 x64.
18 |
19 |
20 |
21 | This program is free software: you can redistribute it and/or modify
22 | it under the terms of the GNU General Public License as published by
23 | the Free Software Foundation, either version 3 of the License, or
24 | (at your option) any later version.
25 |
26 | This program is distributed in the hope that it will be useful,
27 | but WITHOUT ANY WARRANTY; without even the implied warranty of
28 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 | GNU General Public License for more details.
30 |
31 | You should have received a copy of the GNU General Public License
32 | along with ProtectedDesktops. If not, see .
33 |
34 |
35 |
36 | Additional Files:
37 |
38 |
39 | RunMe.bat
40 |
41 | RunMe.exe
42 |
43 |
44 |
45 | Directions:
46 |
47 |
48 | 1. To create local user accounts:
49 |
50 | Start button -> Settings -> Accounts -> Family & other users -> Add someone else to this PC ->
51 | I don't have this person's sign-in information -> Add a user without a Microsoft account
52 |
53 |
54 | 2. To change the main user to a standard user:
55 |
56 | Log in from new admin account to change the main to standard user
57 |
58 | Need to create shortcut
59 | Set to run as admin
60 |
61 |
62 | 3. Copy both files into the ProtectedDesktops folder.
63 |
64 |
65 | 4. Right click on RunMe.bat and select "Run as administrator."
66 |
67 |
68 | 5. On the new console window that opens, type RunMe and hit Enter.
69 |
70 |
71 | 6. Use the included launcher program to operate the sandbox.
72 |
73 |
74 |
75 | Description:
76 |
77 | In testing, the SetThreadDesktop() function failed consistently on Windows 10 and was unreliable on Windows 8 even though permissions are correct and the thread has not created any windows or hooks. This appears to be related to how conhost.exe is used on the newer operating systems. Conhost.exe launches as a child process to all console processes and handles GUI features.
78 |
79 | This solution starts an elevated command prompt which then has conhost.exe attached to itself. A launcher program used at the command prompt starts the sandbox.
80 |
81 | If anyone has another solution to this problem, please let me know.
82 |
83 |
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/Windows8&10/RunMe.bat:
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1 | start cmd /k cd %~dp0
2 |
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/Windows8&10/RunMe.exe:
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https://raw.githubusercontent.com/joshduf/ProtectedDesktops/9c7c9aa36ed2cc3042bd3eecd57bf8e47228d396/Windows8&10/RunMe.exe
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/settings.ini:
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1 | Josh
2 | Sandbox
3 | C:\Program Files\Explorer++\Explorer++.exe
4 |
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