commit fa46e405aa050987075629ec1709e985402ceeda Author: Bob Carroll Date: Wed Mar 21 22:25:27 2012 -0700 it appears to work diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..5a965fb --- /dev/null +++ b/COPYING @@ -0,0 +1,280 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +License is intended to guarantee your freedom to share and change free +software--to make sure the software is free for all its users. This +General Public License applies to most of the Free Software +Foundation's software and to any other program whose authors commit to +using it. (Some other Free Software Foundation software is covered by +the GNU Library General Public License instead.) You can apply it to +your programs, too. + + When we speak of free software, we are referring to freedom, not +price. Our General Public Licenses are designed to make sure that you +have the freedom to distribute copies of free software (and charge for +this service if you wish), that you receive source code or can get it +if you want it, that you can change the software or use pieces of it +in new free programs; and that you know you can do these things. + + To protect your rights, we need to make restrictions that forbid +anyone to deny you these rights or to ask you to surrender the rights. +These restrictions translate to certain responsibilities for you if you +distribute copies of the software, or if you modify it. + + For example, if you distribute copies of such a program, whether +gratis or for a fee, you must give the recipients all the rights that +you have. You must make sure that they, too, receive or can get the +source code. And you must show them these terms so they know their +rights. + + We protect your rights with two steps: (1) copyright the software, and +(2) offer you this license which gives you legal permission to copy, +distribute and/or modify the software. + + Also, for each author's protection and ours, we want to make certain +that everyone understands that there is no warranty for this free +software. If the software is modified by someone else and passed on, we +want its recipients to know that what they have is not the original, so +that any problems introduced by others will not reflect on the original +authors' reputations. + + Finally, any free program is threatened constantly by software +patents. We wish to avoid the danger that redistributors of a free +program will individually obtain patent licenses, in effect making the +program proprietary. To prevent this, we have made it clear that any +patent must be licensed for everyone's free use or not licensed at all. + + The precise terms and conditions for copying, distribution and +modification follow. + + GNU GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License applies to any program or other work which contains +a notice placed by the copyright holder saying it may be distributed +under the terms of this General Public License. The "Program", below, +refers to any such program or work, and a "work based on the Program" +means either the Program or any derivative work under copyright law: +that is to say, a work containing the Program or a portion of it, +either verbatim or with modifications and/or translated into another +language. (Hereinafter, translation is included without limitation in +the term "modification".) Each licensee is addressed as "you". + +Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running the Program is not restricted, and the output from the Program +is covered only if its contents constitute a work based on the +Program (independent of having been made by running the Program). +Whether that is true depends on what the Program does. + + 1. You may copy and distribute verbatim copies of the Program's +source code as you receive it, in any medium, provided that you +conspicuously and appropriately publish on each copy an appropriate +copyright notice and disclaimer of warranty; keep intact all the +notices that refer to this License and to the absence of any warranty; +and give any other recipients of the Program a copy of this License +along with the Program. + +You may charge a fee for the physical act of transferring a copy, and +you may at your option offer warranty protection in exchange for a fee. + + 2. You may modify your copy or copies of the Program or any portion +of it, thus forming a work based on the Program, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) You must cause the modified files to carry prominent notices + stating that you changed the files and the date of any change. + + b) You must cause any work that you distribute or publish, that in + whole or in part contains or is derived from the Program or any + part thereof, to be licensed as a whole at no charge to all third + parties under the terms of this License. + + c) If the modified program normally reads commands interactively + when run, you must cause it, when started running for such + interactive use in the most ordinary way, to print or display an + announcement including an appropriate copyright notice and a + notice that there is no warranty (or else, saying that you provide + a warranty) and that users may redistribute the program under + these conditions, and telling the user how to view a copy of this + License. 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The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS diff --git a/README b/README new file mode 100644 index 0000000..2de073d --- /dev/null +++ b/README @@ -0,0 +1,10 @@ +sudont is a Windows console application that will execute a command without +administrator rights. This is necessary for situations when a user is +running as an administrator with UAC turned off, or is currently elevated. + +When sudont spawns the new process, all system privileges are disabled and +rights associated with the built-in administrators group will be denied. +Further, the integrity level is reduced to medium, or lower if the process +image has an explicit (and lower) integrity level defined. + +Supported on Windows Vista, Windows 7, and Windows Server 2008 only. diff --git a/resource.h b/resource.h new file mode 100755 index 0000000..8573b85 --- /dev/null +++ b/resource.h @@ -0,0 +1,14 @@ +//{{NO_DEPENDENCIES}} +// Microsoft Visual C++ generated include file. +// Used by sudont.rc + +// Next default values for new objects +// +#ifdef APSTUDIO_INVOKED +#ifndef APSTUDIO_READONLY_SYMBOLS +#define _APS_NEXT_RESOURCE_VALUE 101 +#define _APS_NEXT_COMMAND_VALUE 40001 +#define _APS_NEXT_CONTROL_VALUE 1001 +#define _APS_NEXT_SYMED_VALUE 101 +#endif +#endif diff --git a/sudont.c b/sudont.c new file mode 100755 index 0000000..677e032 --- /dev/null +++ b/sudont.c @@ -0,0 +1,215 @@ +/** + * super user don't - execute a command without admin privileges + * Copyright (c) 2012 Bob Carroll + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include + +DWORD GetFileMandatoryLabel(wchar_t *file) +{ + HANDLE hheap; + SECURITY_DESCRIPTOR *sd; + DWORD szreq; + BOOL present; + PACL sacl; + BOOL defaulted; + ACL_SIZE_INFORMATION asi; + void *mlace; + SID *mlsid; + DWORD mlrid = 0; + int i; + + GetFileSecurity(file, LABEL_SECURITY_INFORMATION, NULL, 0, &szreq); + if (szreq == 0) + return mlrid; + + hheap = GetProcessHeap(); + sd = (SECURITY_DESCRIPTOR *)HeapAlloc(hheap, HEAP_ZERO_MEMORY, szreq); + + if (!GetFileSecurity(file, LABEL_SECURITY_INFORMATION, sd, szreq, &szreq)) { + HeapFree(hheap, 0, sd); + CloseHandle(hheap); + return mlrid; + } + + if (!GetSecurityDescriptorSacl(sd, &present, &sacl, &defaulted)) { + HeapFree(hheap, 0, sd); + CloseHandle(hheap); + return mlrid; + } + + if (present) { + if (!GetAclInformation(sacl, (void *)&asi, sizeof(ACL_SIZE_INFORMATION), AclSizeInformation)) { + HeapFree(hheap, 0, sd); + CloseHandle(hheap); + return mlrid; + } + + if (asi.AceCount == 1) { + if (!GetAce(sacl, 0, &mlace)) { + HeapFree(hheap, 0, sd); + CloseHandle(hheap); + return mlrid; + } + + mlsid = (SID *)&((SYSTEM_MANDATORY_LABEL_ACE *)mlace)->SidStart; + + if (IsValidSid(mlsid)) + mlrid = mlsid->SubAuthority[0]; + } + } + + HeapFree(hheap, 0, sd); + CloseHandle(hheap); + + return mlrid; +} + +BOOL SetTokenMandatoryLabel(HANDLE token, DWORD mlrid) +{ + PSID integsid; + SID_IDENTIFIER_AUTHORITY mandlblauth = SECURITY_MANDATORY_LABEL_AUTHORITY; + TOKEN_MANDATORY_LABEL tml; + + if (!AllocateAndInitializeSid(&mandlblauth, 1, mlrid, 0, 0, 0, 0, 0, 0, 0, &integsid)) + return FALSE; + + tml.Label.Sid = integsid; + tml.Label.Attributes = SE_GROUP_INTEGRITY; + + return SetTokenInformation(token, TokenIntegrityLevel, &tml, sizeof(TOKEN_MANDATORY_LABEL)); +} + +int wmain(int argc, wchar_t* argv[]) +{ + wchar_t cmdline[10240]; + HANDLE hcurtok; + HANDLE hnewtok; + LUID incrquotaluid; + TOKEN_PRIVILEGES newtp; + TOKEN_PRIVILEGES oldtp; + DWORD dwoldtpsz; + PSID adminsid; + SID_IDENTIFIER_AUTHORITY ntauth = SECURITY_NT_AUTHORITY; + SID_AND_ATTRIBUTES saa; + DWORD mlrid; + STARTUPINFOW si; + PROCESS_INFORMATION pi; + int i, pos = 0, len = 0; + + if (argc < 2) { + wprintf(L"USAGE: sudont [ ... ]\n"); + return 0; + } + + ZeroMemory(&incrquotaluid, sizeof(LUID)); + LookupPrivilegeValue(NULL, SE_INCREASE_QUOTA_NAME, &incrquotaluid); + + ZeroMemory(&newtp, sizeof(TOKEN_PRIVILEGES)); + newtp.PrivilegeCount = 1; + newtp.Privileges[0].Luid = incrquotaluid; + newtp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; + + if (!OpenProcessToken( + GetCurrentProcess(), + TOKEN_QUERY | TOKEN_ADJUST_DEFAULT | TOKEN_ADJUST_PRIVILEGES | TOKEN_DUPLICATE | TOKEN_ASSIGN_PRIMARY, + &hcurtok)) { + wprintf(L"sudont: failed to open process token (%d)\n", GetLastError()); + return 1; + } + + if (!AdjustTokenPrivileges(hcurtok, FALSE, &newtp, sizeof(TOKEN_PRIVILEGES), &oldtp, &dwoldtpsz)) { + wprintf(L"sudont: failed to enable impersonation privilege (%d)\n", GetLastError()); + CloseHandle(hcurtok); + return 1; + } + + if (!AllocateAndInitializeSid( + &ntauth, + 2, + SECURITY_BUILTIN_DOMAIN_RID, + DOMAIN_ALIAS_RID_ADMINS, + 0, + 0, + 0, + 0, + 0, + 0, + &adminsid)) { + wprintf(L"sudont: failed to allocate admin SID (%d)\n", GetLastError()); + CloseHandle(hcurtok); + return 1; + } + + saa.Sid = adminsid; + saa.Attributes = SE_GROUP_USE_FOR_DENY_ONLY; + + if (!CreateRestrictedToken(hcurtok, DISABLE_MAX_PRIVILEGE, 1, &saa, 0, 0, 0, 0, &hnewtok)) { + wprintf(L"sudont: failed to create restricted token (%d)\n", GetLastError()); + CloseHandle(hcurtok); + return 1; + } + + CloseHandle(hcurtok); + + if ((mlrid = GetFileMandatoryLabel(argv[1])) > SECURITY_MANDATORY_MEDIUM_RID) + mlrid = SECURITY_MANDATORY_MEDIUM_RID; + + if (!SetTokenMandatoryLabel(hnewtok, mlrid)) { + wprintf(L"sudont: failed to set token mandatory label (%d)\n", GetLastError()); + CloseHandle(hnewtok); + return 1; + } + + for (i = 2; i < argc; i++) { + if (pos > 0) + cmdline[pos++] = ' '; + + len = wcslen(argv[i]); + if (pos + len >= 10240) + break; + + CopyMemory(cmdline + pos, argv[i], len * sizeof(wchar_t)); + pos += len; + } + cmdline[pos] = '\0'; + + ZeroMemory(&si, sizeof(STARTUPINFO)); + si.cb = sizeof(STARTUPINFO); + si.lpDesktop = L"winsta0\\default"; + + if (!CreateProcessAsUser( + hnewtok, + argv[1], + cmdline, + NULL, + NULL, + FALSE, + CREATE_NEW_CONSOLE, + NULL, + NULL, + &si, + &pi)) { + wprintf(L"sudont: failed to create new process (%d)\n", GetLastError()); + CloseHandle(hnewtok); + return 1; + } + + CloseHandle(hnewtok); + return 0; +} diff --git a/sudont.rc b/sudont.rc new file mode 100755 index 0000000..1987bda Binary files /dev/null and b/sudont.rc differ diff --git a/sudont.sln b/sudont.sln new file mode 100755 index 0000000..4cb453e --- /dev/null +++ b/sudont.sln @@ -0,0 +1,20 @@ + +Microsoft Visual Studio Solution File, Format Version 11.00 +# Visual Studio 2010 +Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "sudont", "sudont.vcxproj", "{780262A0-33AD-433F-8ADB-3CC694C8A3BA}" +EndProject +Global + GlobalSection(SolutionConfigurationPlatforms) = preSolution + Debug|Win32 = Debug|Win32 + Release|Win32 = Release|Win32 + EndGlobalSection + GlobalSection(ProjectConfigurationPlatforms) = postSolution + {780262A0-33AD-433F-8ADB-3CC694C8A3BA}.Debug|Win32.ActiveCfg = Debug|Win32 + {780262A0-33AD-433F-8ADB-3CC694C8A3BA}.Debug|Win32.Build.0 = Debug|Win32 + {780262A0-33AD-433F-8ADB-3CC694C8A3BA}.Release|Win32.ActiveCfg = Release|Win32 + {780262A0-33AD-433F-8ADB-3CC694C8A3BA}.Release|Win32.Build.0 = Release|Win32 + EndGlobalSection + GlobalSection(SolutionProperties) = preSolution + HideSolutionNode = FALSE + EndGlobalSection +EndGlobal diff --git a/sudont.vcxproj b/sudont.vcxproj new file mode 100755 index 0000000..b66d313 --- /dev/null +++ b/sudont.vcxproj @@ -0,0 +1,90 @@ + + + + + Debug + Win32 + + + Release + Win32 + + + + {780262A0-33AD-433F-8ADB-3CC694C8A3BA} + Win32Proj + sudont + + + + Application + true + Unicode + + + Application + false + true + Unicode + + + + + + + + + + + + + true + + + false + + + + + + Level3 + Disabled + WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) + CompileAsC + + + Console + true + + + + + Level3 + + + MaxSpeed + true + true + WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) + CompileAsC + + + Console + true + true + true + + + + + + + + + + + + + + + \ No newline at end of file