mirror of https://github.com/Alia5/GlosSI
GlosSITarget: Refactor: Function unhooking
Peter Repukat
2 years ago
parent
fcab33a83f
commit
fb861def4f
@ -0,0 +1,55 @@
|
||||
/*
|
||||
Copyright 2021-2022 Peter Repukat - FlatspotSoftware
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
#include "UnhookUtil.h"
|
||||
|
||||
#include <spdlog/spdlog.h>
|
||||
|
||||
#include "Settings.h"
|
||||
|
||||
void UnhookUtil::UnPatchHook(const std::string& name, HMODULE module)
|
||||
{
|
||||
spdlog::trace("Patching \"{}\"...", name);
|
||||
|
||||
BYTE* address = reinterpret_cast<BYTE*>(GetProcAddress(module, name.c_str()));
|
||||
if (!address) {
|
||||
spdlog::error("failed to unpatch \"{}\"", name);
|
||||
}
|
||||
std::string bytes;
|
||||
if (Settings::isWin10 && UNHOOK_BYTES_ORIGINAL_WIN10.contains(name)) {
|
||||
bytes = UNHOOK_BYTES_ORIGINAL_WIN10.at(name);
|
||||
}
|
||||
else {
|
||||
bytes = UNHOOK_BYTES_ORIGINAL_22000.at(name);
|
||||
}
|
||||
DWORD dw_old_protect, dw_bkup;
|
||||
const auto len = bytes.size();
|
||||
if (!VirtualProtect(address, len, PAGE_EXECUTE_READWRITE, &dw_old_protect)) { // Change permissions of memory..
|
||||
spdlog::error("Couldn't change permissions of memory for \"{}\"", name);
|
||||
return;
|
||||
}
|
||||
const auto opcode = *(address);
|
||||
if (!std::ranges::any_of(JUMP_INSTR_OPCODES, [&opcode](const auto& op) { return op == opcode; })) {
|
||||
spdlog::debug("\"{}\" Doesn't appear to be hooked, skipping!", name);
|
||||
}
|
||||
else {
|
||||
for (DWORD i = 0; i < len; i++) // unpatch Valve's hook
|
||||
{
|
||||
*(address + i) = bytes[i];
|
||||
}
|
||||
spdlog::trace("Unpatched \"{}\"", name);
|
||||
}
|
||||
VirtualProtect(address, len, dw_old_protect, &dw_bkup); // Revert permission change...
|
||||
}
|
||||
@ -0,0 +1,61 @@
|
||||
/*
|
||||
Copyright 2021-2022 Peter Repukat - FlatspotSoftware
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
#pragma once
|
||||
|
||||
#define NOMINMAX
|
||||
#include <map>
|
||||
#include <Windows.h>
|
||||
|
||||
#include <string>
|
||||
#include <vector>
|
||||
|
||||
namespace UnhookUtil {
|
||||
void UnPatchHook(const std::string& name, HMODULE module);
|
||||
|
||||
static inline const std::vector<uint8_t> JUMP_INSTR_OPCODES = {
|
||||
0xE9,
|
||||
0xE8,
|
||||
0xEB,
|
||||
0xEA,
|
||||
0xFF};
|
||||
|
||||
// Valve Hooks various functions and hides Gaming devices like this.
|
||||
// To be able to query them, unpatch the hook with the original bytes...
|
||||
// 22000 ^= Windows build number
|
||||
static inline const std::map<std::string, std::string> UNHOOK_BYTES_ORIGINAL_22000 = {
|
||||
{"SetupDiEnumDeviceInfo", "\x48\x89\x5C\x24\x08"},
|
||||
{"SetupDiGetClassDevsW", "\x48\x89\x5C\x24\x08"},
|
||||
{"HidD_GetPreparsedData", "\x48\x89\x5C\x24\x18"},
|
||||
{"HidP_GetCaps", "\x4C\x8B\xD1\x48\x85\xC9"},
|
||||
{"HidD_GetAttributes", "\x40\x53\x48\x83\xEC"},
|
||||
{"HidD_GetProductString", "\x48\x83\xEC\x48\x48"},
|
||||
{"HidP_GetUsages", "\x4C\x89\x4C\x24\x20"},
|
||||
{"HidP_GetData", "\x4C\x89\x44\x24\x18"},
|
||||
{"HidP_GetValueCaps", "\x48\x83\xEC\x48\x49"},
|
||||
{"HidP_GetUsageValue", "\x40\x53\x55\x56\x48"},
|
||||
{"HidP_GetButtonCaps", "\x48\x83\xEC\x48\x49"},
|
||||
// Valve hooks "CreateProcess" to detect child-processes
|
||||
{"CreateProcessW", "\x4C\x8B\xDC\x48\x83"},
|
||||
};
|
||||
|
||||
// SetupApi.dll is different on Win10 than on Win11
|
||||
static inline const std::map<std::string, std::string> UNHOOK_BYTES_ORIGINAL_WIN10 = {
|
||||
{"SetupDiEnumDeviceInfo", "\x40\x53\x56\x57\x41\x54\x41\x55"},
|
||||
{"SetupDiGetClassDevsW", "\x48\x8B\xC4\x48\x89\x58\x08"},
|
||||
};
|
||||
|
||||
|
||||
} // namespace UnhookUtil
|
||||
Loading…
Reference in New Issue