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Code Issues 1 Projects Releases Wiki Activity

added a new option to the cold client loader to load a dll via createremotethread

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This commit is contained in:
otavepto 2024-01-12 15:50:08 +02:00
parent 34492b69de
commit 733e08c3b9
2 changed files with 62 additions and 2 deletions
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61
tools/steamclient_loader/win/ColdClientLoader.cpp
View File

@ -12,6 +12,8 @@
#include <stdio.h>
#include <string>
#include "pe_helpers/pe_helpers.hpp"
bool IsNotRelativePathOrRemoveFileName(WCHAR* output, bool Remove)
{
int LG = lstrlenW(output);
@ -151,6 +153,46 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
// Close the HKEY Handle.
RegCloseKey(Registrykey);
// dll to inject
bool inject_extra_dll = false;
std::wstring extra_dll(8192, L'\0');
{
auto read_chars = GetPrivateProfileStringW(L"Extra", L"InjectDll", L"", &extra_dll[0], extra_dll.size(), CurrentDirectory);
if (extra_dll[0]) {
extra_dll = extra_dll.substr(0, read_chars);
} else {
extra_dll.clear();
}
if (extra_dll.size()) {
if (!IsNotRelativePathOrRemoveFileName(&extra_dll[0], false)) {
std::wstring tmp = extra_dll;
read_chars = GetFullPathNameW(tmp.c_str(), extra_dll.size(), &extra_dll[0], NULL);
if (!read_chars) {
MessageBoxA(NULL, "Unable to get full path of dll to inject.", "ColdClientLoader", MB_ICONERROR);
return 1;
}
if (read_chars >= extra_dll.size()) {
extra_dll.resize(read_chars);
read_chars = GetFullPathNameW(tmp.c_str(), extra_dll.size(), &extra_dll[0], NULL);
if (!read_chars) {
MessageBoxA(NULL, "Unable to get full path of dll to inject after resizing buffer.", "ColdClientLoader", MB_ICONERROR);
return 1;
}
}
extra_dll = extra_dll.substr(0, read_chars);
}
if (GetFileAttributesW(extra_dll.c_str()) == INVALID_FILE_ATTRIBUTES) {
MessageBoxA(NULL, "Couldn't find the requested dll to inject.", "ColdClientLoader", MB_ICONERROR);
return 1;
}
inject_extra_dll = true;
}
}
// spawn the exe
STARTUPINFOW info = { 0 };
SecureZeroMemory(&info, sizeof(info));
@ -167,13 +209,28 @@ int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance
return 1;
}
if (inject_extra_dll) {
const char *err_inject = nullptr;
DWORD code = pe_helpers::loadlib_remote(processInfo.hProcess, extra_dll, &err_inject);
if (code != ERROR_SUCCESS) {
TerminateProcess(processInfo.hProcess, 1);
std::string err_full =
"Failed to inject the requested dll:\n" +
std::string(err_inject) + "\n" +
pe_helpers::get_err_string(code) + "\n" +
"Error code = " + std::to_string(code) + "\n";
MessageBoxA(NULL, err_full.c_str(), "ColdClientLoader", MB_ICONERROR);
return 1;
}
}
bool run_exe = true;
#ifndef EMU_RELEASE_BUILD
{
std::wstring dbg_file(50, L'\0');
auto res_dbg_len = GetPrivateProfileStringW(L"Debug", L"ResumeByDebugger", L"", &dbg_file[0], dbg_file.size(), CurrentDirectory);
auto read_chars = GetPrivateProfileStringW(L"Debug", L"ResumeByDebugger", L"", &dbg_file[0], dbg_file.size(), CurrentDirectory);
if (dbg_file[0]) {
dbg_file = dbg_file.substr(0, res_dbg_len);
dbg_file = dbg_file.substr(0, read_chars);
} else {
dbg_file.clear();
}

3
tools/steamclient_loader/win/ColdClientLoader.ini
View File

@ -11,3 +11,6 @@ SteamClient64Dll=steamclient64.dll
[Debug]
ResumeByDebugger=0
[Extra]
InjectDll=