bananatools/saohook/unity.c

147 lines
4.0 KiB
C

#include <stdbool.h>
#include <windows.h>
#include "hook/table.h"
#include "hook/iohook.h"
#include "hooklib/dll.h"
#include "hooklib/path.h"
#include "hooklib/serial.h"
#include "hooklib/reg.h"
#include "hook/procaddr.h"
#include "amcus/amcus.h"
#include "board/usio.h"
#include "platform/epay.h"
#include "platform/clock.h"
#include "util/dprintf.h"
static void dll_hook_insert_hooks(HMODULE target);
static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name);
static HMODULE (WINAPI *next_LoadLibraryW)(const wchar_t *name);
static HMODULE WINAPI my_LoadLibraryExW(const wchar_t *name, HANDLE hFile, DWORD dwFlags);
static HMODULE (WINAPI *next_LoadLibraryExW)(const wchar_t *name, HANDLE hFile, DWORD dwFlags);
static const struct hook_symbol unity_kernel32_syms[] = {
{
.name = "LoadLibraryW",
.patch = my_LoadLibraryW,
.link = (void **) &next_LoadLibraryW,
},{
.name = "LoadLibraryExW",
.patch = my_LoadLibraryExW,
.link = (void **) &next_LoadLibraryExW,
}
};
static const wchar_t *target_modules[] = {
L"mono.dll",
L"cri_ware_unity.dll",
L"bnAMPF.dll",
L"bnReader.dll",
};
static const wchar_t *dep_hooks[] = {
L"libamw.dll",
};
static const size_t target_modules_len = _countof(target_modules);
static const size_t dep_hooks_len = _countof(dep_hooks);
void unity_hook_init(void)
{
dll_hook_insert_hooks(NULL);
}
static void dll_hook_insert_hooks(HMODULE target)
{
hook_table_apply(
target,
"kernel32.dll",
unity_kernel32_syms,
_countof(unity_kernel32_syms));
}
static HMODULE WINAPI my_LoadLibraryExW(const wchar_t *name, HANDLE hFile, DWORD dwFlags)
{
//dprintf("Unity: LoadLibraryExW %ls\n", name);
return my_LoadLibraryW(name);
}
static HMODULE WINAPI my_LoadLibraryW(const wchar_t *name)
{
const wchar_t *name_end;
const wchar_t *target_module;
const wchar_t *target_dep;
bool already_loaded;
HMODULE result;
HMODULE dep_mod;
size_t name_len;
size_t target_module_len;
size_t dep_len;
if (name == NULL) {
SetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
// Check if the module is already loaded
already_loaded = GetModuleHandleW(name) != NULL;
// Must call the next handler so the DLL reference count is incremented
result = next_LoadLibraryW(name);
if (!already_loaded && result != NULL) {
name_len = wcslen(name);
for (size_t i = 0; i < target_modules_len; i++) {
target_module = target_modules[i];
target_module_len = wcslen(target_module);
// Check if the newly loaded library is at least the length of
// the name of the target module
if (name_len < target_module_len) {
continue;
}
name_end = &name[name_len - target_module_len];
// Check if the name of the newly loaded library is one of the
// modules the path hooks should be injected into
if (_wcsicmp(name_end, target_module) != 0) {
continue;
}
dprintf("Unity: Loaded %S\n", target_module);
dll_hook_insert_hooks(result);
path_hook_insert_hooks(result);
amcus_insert_hooks(result);
reg_hook_apply_hooks(result);
clock_hook_insert_hooks(result);
usio_hook_proc_addr(result);
proc_addr_insert_hooks(result);
}
for (size_t i = 0; i < dep_hooks_len; i++) {
target_dep = dep_hooks[i];
dep_mod = GetModuleHandleW(target_dep);
if (dep_mod != NULL) {
dprintf("Unity: Hook dependency %ls\n", target_dep);
iohook_apply_hooks(dep_mod);
serial_hook_apply_hooks(dep_mod);
reg_hook_apply_hooks(dep_mod);
epay_insert_hook(dep_mod);
clock_hook_insert_hooks(dep_mod);
}
}
}
return result;
}