gecko/build/win32/crashinject.cpp

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Crash Injection Utility
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ted Mielczarek <ted.mielczarek@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* Given a PID, this program attempts to inject a DLL into the process
* with that PID. The DLL it attempts to inject, "crashinjectdll.dll",
* must exist alongside this exe. The DLL will then crash the process.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
int main(int argc, char** argv)
{
if (argc != 2) {
fprintf(stderr, "Usage: crashinject <PID>\n");
return 1;
}
int pid = atoi(argv[1]);
if (pid <= 0) {
fprintf(stderr, "Usage: crashinject <PID>\n");
return 1;
}
// find our DLL to inject
wchar_t filename[_MAX_PATH];
if (GetModuleFileNameW(NULL, filename, sizeof(filename) / sizeof(wchar_t)) == 0)
return 1;
wchar_t* slash = wcsrchr(filename, L'\\');
if (slash == NULL)
return 1;
slash++;
wcscpy(slash, L"crashinjectdll.dll");
// now find our target process
HANDLE targetProc = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_WRITE | PROCESS_CREATE_THREAD | PROCESS_QUERY_INFORMATION,
FALSE,
pid);
if (targetProc == NULL) {
fprintf(stderr, "Error %d opening target process\n", GetLastError());
return 1;
}
/*
* This is sort of insane, but we're implementing a technique described here:
* http://www.codeproject.com/KB/threads/winspy.aspx#section_2
*
* The gist is to use CreateRemoteThread to create a thread in the other
* process, but cheat and make the thread function kernel32!LoadLibrary,
* so that the only remote data we have to pass to the other process
* is the path to the library we want to load. The library we're loading
* will then do its dirty work inside the other process.
*/
HMODULE hKernel32 = GetModuleHandleW(L"Kernel32");
// allocate some memory to hold the path in the remote process
void* pLibRemote = VirtualAllocEx(targetProc, NULL, sizeof(filename),
MEM_COMMIT, PAGE_READWRITE);
if (pLibRemote == NULL) {
fprintf(stderr, "Error %d in VirtualAllocEx\n", GetLastError());
CloseHandle(targetProc);
return 1;
}
if (!WriteProcessMemory(targetProc, pLibRemote, (void*)filename,
sizeof(filename), NULL)) {
fprintf(stderr, "Error %d in WriteProcessMemory\n", GetLastError());
VirtualFreeEx(targetProc, pLibRemote, sizeof(filename), MEM_RELEASE);
CloseHandle(targetProc);
return 1;
}
// Now create a thread in the target process that will load our DLL
HANDLE hThread = CreateRemoteThread(
targetProc, NULL, 0,
(LPTHREAD_START_ROUTINE)GetProcAddress(hKernel32,
"LoadLibraryW"),
pLibRemote, 0, NULL);
if (hThread == NULL) {
fprintf(stderr, "Error %d in CreateRemoteThread\n", GetLastError());
VirtualFreeEx(targetProc, pLibRemote, sizeof(filename), MEM_RELEASE);
CloseHandle(targetProc);
return 1;
}
WaitForSingleObject(hThread, INFINITE);
// Cleanup, not that it's going to matter at this point
CloseHandle(hThread);
VirtualFreeEx(targetProc, pLibRemote, sizeof(filename), MEM_RELEASE);
CloseHandle(targetProc);
return 0;
}