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awesome_anti_virus_engine/ai_anti_malware/sandbox.cpp

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#include "sandbox.h"
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#include "sandbox_callbacks.h"
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// 在文件开头添加AllocateMemory函数的声明
auto Sandbox::AllocateMemory(size_t size) -> uint64_t {
// 使用一个简单的内存分配策略
static uint64_t next_address = 0x60000000; // 起始地址
uint64_t allocated_address = next_address;
// 对齐到4KB
size = (size + 0xFFF) & ~0xFFF;
// 分配内存
uc_err err = uc_mem_map(m_ucEngine, allocated_address, size, UC_PROT_ALL);
if (err != UC_ERR_OK) {
printf("[!] Failed to allocate memory at 0x%llx: %u\n",
allocated_address, err);
return 0;
}
// 更新下一个可用地址
next_address += size + 0x1000; // 添加一个页面的间隔
return allocated_address;
}
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std::string getDllNameFromApiSetMap(const std::string& apiSet) {
const std::wstring wApiSet(apiSet.begin(), apiSet.end());
// 获取系统版本信息
using RtlGetVersionFunc = LONG(__stdcall*)(PRTL_OSVERSIONINFOW);
const auto pRtlGetVersion = reinterpret_cast<RtlGetVersionFunc>(
GetProcAddress(LoadLibraryA("ntdll.dll"), "RtlGetVersion"));
RTL_OSVERSIONINFOEXW verInfo{};
verInfo.dwOSVersionInfoSize = sizeof(verInfo);
pRtlGetVersion(reinterpret_cast<PRTL_OSVERSIONINFOW>(&verInfo));
const ULONG verShort = (verInfo.dwMajorVersion << 8) |
(verInfo.dwMinorVersion << 4) |
verInfo.wServicePackMajor;
if (verShort >= static_cast<ULONG>(WinVer::kWin10)) {
const auto apiSetMap = reinterpret_cast<API_SET_NAMESPACE_ARRAY_10*>(
reinterpret_cast<X64PEB*>(__readgsqword(0x60))->ApiSetMap);
const auto apiSetMapAsNumber = reinterpret_cast<ULONG_PTR>(apiSetMap);
auto nsEntry = reinterpret_cast<PAPI_SET_NAMESPACE_ENTRY_10>(
apiSetMap->Start + apiSetMapAsNumber);
// 遍历API集合查找匹配项
for (ULONG i = 0; i < apiSetMap->Count; i++) {
UNICODE_STRING nameString{}, valueString{};
nameString.MaximumLength = static_cast<USHORT>(nsEntry->NameLength);
nameString.Length = static_cast<USHORT>(nsEntry->NameLength);
nameString.Buffer = reinterpret_cast<PWCHAR>(apiSetMapAsNumber +
nsEntry->NameOffset);
const std::wstring name(nameString.Buffer,
nameString.Length / sizeof(WCHAR));
const std::wstring fullName = name + L".dll";
if (_wcsicmp(wApiSet.c_str(), fullName.c_str()) == 0) {
if (nsEntry->ValueCount == 0) {
return "";
}
const auto valueEntry =
reinterpret_cast<PAPI_SET_VALUE_ENTRY_10>(
apiSetMapAsNumber + nsEntry->ValueOffset);
valueString.Buffer = reinterpret_cast<PWCHAR>(
apiSetMapAsNumber + valueEntry->ValueOffset);
valueString.MaximumLength =
static_cast<USHORT>(valueEntry->ValueLength);
valueString.Length =
static_cast<USHORT>(valueEntry->ValueLength);
const std::wstring value(valueString.Buffer,
valueString.Length / sizeof(WCHAR));
return {value.begin(), value.end()};
}
++nsEntry;
}
} else {
// 不支持Windows 10以下版本
throw std::runtime_error("Unsupported Windows version");
}
return "";
}
class ImportResolver : public peconv::t_function_resolver {
public:
explicit ImportResolver(std::map<std::string, uint64_t> context)
: _functionMap(std::move(context)) {}
FARPROC resolve_func(LPSTR libName, LPSTR funcName) override {
return reinterpret_cast<FARPROC>(_functionMap[std::string(funcName)]);
}
private:
std::map<std::string, uint64_t> _functionMap;
};
class cListImportNames : public peconv::ImportThunksCallback {
public:
cListImportNames(BYTE* _modulePtr, size_t _moduleSize,
std::vector<std::shared_ptr<moudle_import>>& name_to_addr)
: ImportThunksCallback(_modulePtr, _moduleSize),
nameToAddr(name_to_addr) {}
virtual bool processThunks(LPSTR lib_name, ULONG_PTR origFirstThunkPtr,
ULONG_PTR firstThunkPtr) {
if (this->is64b) {
IMAGE_THUNK_DATA64* desc =
reinterpret_cast<IMAGE_THUNK_DATA64*>(origFirstThunkPtr);
ULONGLONG* call_via = reinterpret_cast<ULONGLONG*>(firstThunkPtr);
return processThunks_tpl<ULONGLONG, IMAGE_THUNK_DATA64>(
lib_name, desc, call_via, IMAGE_ORDINAL_FLAG64);
}
IMAGE_THUNK_DATA32* desc =
reinterpret_cast<IMAGE_THUNK_DATA32*>(origFirstThunkPtr);
DWORD* call_via = reinterpret_cast<DWORD*>(firstThunkPtr);
return processThunks_tpl<DWORD, IMAGE_THUNK_DATA32>(
lib_name, desc, call_via, IMAGE_ORDINAL_FLAG32);
}
protected:
template <typename T_FIELD, typename T_IMAGE_THUNK_DATA>
bool processThunks_tpl(LPSTR lib_name, T_IMAGE_THUNK_DATA* desc,
T_FIELD* call_via, T_FIELD ordinal_flag) {
DWORD call_via_rva = static_cast<DWORD>((ULONG_PTR)call_via -
(ULONG_PTR)this->modulePtr);
LPSTR func_name = NULL;
if ((desc->u1.Ordinal & ordinal_flag) == 0) {
PIMAGE_IMPORT_BY_NAME by_name =
(PIMAGE_IMPORT_BY_NAME)((ULONGLONG)modulePtr +
desc->u1.AddressOfData);
func_name = reinterpret_cast<LPSTR>(by_name->Name);
std::string fuck_up_api_ms = lib_name;
if (fuck_up_api_ms.find("api-ms-") != std::string::npos) {
fuck_up_api_ms = getDllNameFromApiSetMap(fuck_up_api_ms);
if (fuck_up_api_ms.size() <= 1) __debugbreak();
}
auto import_data = std::make_shared<moudle_import>();
memcpy(import_data->name, func_name, strlen(func_name));
memcpy(import_data->dll_name, fuck_up_api_ms.c_str(),
fuck_up_api_ms.size());
import_data->function_address = call_via_rva;
import_data->is_delayed_import = false;
nameToAddr.push_back(import_data);
}
return true;
}
std::vector<std::shared_ptr<moudle_import>>& nameToAddr;
};
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class cFixImprot : public peconv::t_function_resolver {
public:
// 构造函数接收Sandbox实例的引用
explicit cFixImprot(Sandbox* sandbox) : m_sandbox(sandbox) {}
// 实现导入函数解析
virtual FARPROC resolve_func(LPSTR lib_name, LPSTR func_name) override {
// 遍历所有已加载的模块
for (const auto& module : m_sandbox->m_moduleList) {
// 检查模块名是否匹配
if (_stricmp(module->name, lib_name) == 0) {
// 遍历模块的导出函数
for (const auto& exp : m_sandbox->m_exportFuncDict) {
// 检查函数名是否匹配
if (strcmp(exp->name, func_name) == 0) {
auto newBase = reinterpret_cast<FARPROC>(
module->base + exp->function_address);
printf("fix import: %s => %llx \n", func_name, newBase);
// 返回在模拟器中的虚拟地址
return newBase;
}
}
}
}
for (const auto& module : m_sandbox->m_moduleList) {
for (const auto& exp : m_sandbox->m_exportFuncDict) {
// 检查函数名是否匹配
if (strcmp(exp->name, func_name) == 0) {
auto newBase = reinterpret_cast<FARPROC>(
module->base + exp->function_address);
printf("fix import: %s => %llx \n", func_name, newBase);
// 返回在模拟器中的虚拟地址
return newBase;
}
}
}
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//__debugbreak();
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return nullptr;
}
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private:
Sandbox* m_sandbox; // Sandbox实例的指针
};
Sandbox::Sandbox() {
m_ucEngine = nullptr;
m_peInfo = nullptr;
m_nextWfpEngineHandle = (HANDLE)0x1000; // 初始化WFP引擎句柄
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m_lastImpRead = { 0,0 };
}
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Sandbox::~Sandbox() {
// 清理WFP引擎资源
for (auto& pair : m_wfpEngines) {
delete pair.second;
}
m_wfpEngines.clear();
// 1. 先清理高层资源
m_crossSectionExecution.clear();
envStrings.clear();
api_map.clear();
m_moduleList.clear();
m_impFuncDict.clear();
m_exportFuncDict.clear();
// 2. 清理内存映射
if (m_ucEngine) {
uc_close(m_ucEngine);
m_ucEngine = nullptr;
}
// 3. 清理堆内存
for (auto& [address, segment] : m_heapSegments) {
HeapBlock* current = segment->blocks;
while (current) {
HeapBlock* next = current->next;
delete current;
current = next;
}
delete segment;
}
m_heapSegments.clear();
// 5. 最后清理底层资源
if (m_csHandle) {
cs_close(&m_csHandle);
}
}
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auto Sandbox::PushModuleToVM(const char* dllName, uint64_t moduleBase) -> void {
for (auto module : m_moduleList) {
if (module->real_base == moduleBase) {
printf("skip module name: %s (already loaded)\n", module->name);
return;
}
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}
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if (m_usedModuleBase == 0) {
m_usedModuleBase = DLL_MODULE_BASE;
}
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// 创建新模块
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auto newModule = CreateModuleInfo(dllName, AlignSize(m_usedModuleBase, PAGE_SIZE), moduleBase, moduleBase);
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m_usedModuleBase += PAGE_SIZE + newModule->size;
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m_moduleList.push_back(newModule);
printf("push `%s` module to vm base: %llx vm size: %llx\n", newModule->name,
newModule->base, newModule->size);
uc_mem_map(m_ucEngine, newModule->base, newModule->size,
UC_PROT_READ | UC_PROT_EXEC);
uc_mem_write(m_ucEngine, newModule->base, (void*)moduleBase,
newModule->size);
if (peconv::relocate_module((BYTE*)moduleBase, newModule->size,
newModule->base) == false) {
throw std::runtime_error("Failed to relocate module");
}
// 将模块添加到LDR链表中
if (m_peInfo->isX64) {
AddModuleToLdr(newModule);
}
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}
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auto Sandbox::CreateModuleInfo(const char* dllName, uint64_t moduleBase, uint64_t realModuleBase,
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uint64_t bufferAddress)
-> std::shared_ptr<struct_moudle> {
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// 解析PE头
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auto* dosHeader = reinterpret_cast<PIMAGE_DOS_HEADER>(bufferAddress);
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auto* ntHeaders = reinterpret_cast<PIMAGE_NT_HEADERS>(
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reinterpret_cast<LPBYTE>(bufferAddress) + dosHeader->e_lfanew);
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// 获取区段对齐值
DWORD sectionAlignment =
(ntHeaders->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64)
? reinterpret_cast<PIMAGE_NT_HEADERS64>(ntHeaders)
->OptionalHeader.SectionAlignment
: ntHeaders->OptionalHeader.SectionAlignment;
// 获取区段头
auto* sectionHeader = reinterpret_cast<PIMAGE_SECTION_HEADER>(
reinterpret_cast<PUCHAR>(ntHeaders) + sizeof(ntHeaders->Signature) +
sizeof(ntHeaders->FileHeader) +
ntHeaders->FileHeader.SizeOfOptionalHeader);
struct_moudle newModule{};
strncpy(newModule.name, dllName, strlen(dllName));
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newModule.base = moduleBase;
newModule.real_base = realModuleBase;
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newModule.entry = ntHeaders->OptionalHeader.AddressOfEntryPoint;
newModule.size = ntHeaders->OptionalHeader.SizeOfImage;
// 处理区段
for (WORD i = 0; i < ntHeaders->FileHeader.NumberOfSections; i++) {
const auto& section = sectionHeader[i];
// if (!(section.Characteristics &
// (IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_CNT_CODE))) {
// continue;
// }
// 设置区段保护属性
int protection = UC_PROT_READ;
if (section.Characteristics & IMAGE_SCN_MEM_EXECUTE)
protection |= UC_PROT_EXEC;
if (section.Characteristics & IMAGE_SCN_MEM_WRITE)
protection |= UC_PROT_WRITE;
// 计算区段大小
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auto sectionSize = AlignToSectionAlignment(
max(section.Misc.VirtualSize, section.SizeOfRawData),
sectionAlignment);
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// 创建区段信息
moudle_section newSection{};
strncpy(newSection.name, reinterpret_cast<const char*>(section.Name),
8);
newSection.base = section.VirtualAddress;
newSection.size = sectionSize;
newSection.protect_flag = protection;
newModule.sections.push_back(
std::make_shared<moudle_section>(newSection));
std::cout << "[PE] " << dllName << " Section found: " << newSection.name
<< '\n';
}
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return std::make_shared<struct_moudle>(newModule);
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}
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auto Sandbox::ResolveExport(uint64_t moduleBase)
-> std::vector<std::shared_ptr<moudle_export>> {
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DWORD exportSize = 0;
static RtlImageDirectoryEntryToDataFn fnRtlImageDirectoryEntryToData;
if (fnRtlImageDirectoryEntryToData == nullptr) {
fnRtlImageDirectoryEntryToData =
reinterpret_cast<RtlImageDirectoryEntryToDataFn>(GetProcAddress(
GetModuleHandleA("ntdll.dll"), "RtlImageDirectoryEntryToData"));
}
// 获取导出表
PIMAGE_EXPORT_DIRECTORY exportDirectory =
static_cast<PIMAGE_EXPORT_DIRECTORY>(fnRtlImageDirectoryEntryToData(
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reinterpret_cast<PUCHAR>(moduleBase), TRUE,
IMAGE_DIRECTORY_ENTRY_EXPORT, &exportSize));
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if (exportDirectory) {
const DWORD numberOfNames = exportDirectory->NumberOfNames;
PDWORD addressOfFunctions =
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reinterpret_cast<PDWORD>(reinterpret_cast<PUCHAR>(moduleBase) +
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exportDirectory->AddressOfFunctions);
PDWORD addressOfNames =
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reinterpret_cast<PDWORD>(reinterpret_cast<PUCHAR>(moduleBase) +
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exportDirectory->AddressOfNames);
PWORD addressOfNameOrdinals =
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reinterpret_cast<PWORD>(reinterpret_cast<PUCHAR>(moduleBase) +
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exportDirectory->AddressOfNameOrdinals);
// 遍历导出函数
for (size_t i = 0; i < numberOfNames; i++) {
PCHAR functionName = reinterpret_cast<PCHAR>(
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reinterpret_cast<PUCHAR>(moduleBase) + addressOfNames[i]);
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// 获取函数RVA
const DWORD functionRva =
addressOfFunctions[addressOfNameOrdinals[i]];
// 创建导出数据结构
moudle_export exportData{};
memcpy(exportData.name, functionName, strlen(functionName));
exportData.function_address = functionRva;
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exportData.ordinal = static_cast<WORD>(
addressOfNameOrdinals[i] + exportDirectory->Base); // 设置序号
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m_exportFuncDict.push_back(
std::make_shared<moudle_export>(exportData));
}
}
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return m_exportFuncDict;
}
auto Sandbox::ResolveImportExports() -> void {
for (auto module : m_moduleList) {
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if (module->base == m_peInfo->RecImageBase) {
continue;
}
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const auto exports = ResolveExport(module->real_base);
for (const auto item : exports) {
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if (LOG_LEVEL > 0) {
printf("import export: [%s] %s => %llx\n", module->name,
item->name, item->function_address);
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}
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module->export_function.push_back(item);
}
}
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}
auto Sandbox::processImportModule(const moudle_import* importModule) -> void {
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for (auto module : m_moduleList) {
if (strcmp(module->name, importModule->dll_name) == 0) {
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if (LOG_LEVEL > 0) {
printf("skip module name: %s (already loaded)\n", module->name);
}
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return;
}
}
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// 构建模块路径
const std::string systemDir =
m_peInfo->isX64 ? "\\System32\\" : "\\SysWOW64\\";
char windowsPath[MAX_PATH];
if (!GetWindowsDirectoryA(windowsPath, sizeof(windowsPath))) {
throw std::runtime_error("Failed to get Windows directory");
}
const std::string modulePath =
std::string(windowsPath) + systemDir + importModule->dll_name;
// 加载PE模块
size_t mappedPeSize = 0;
const auto moduleBase = reinterpret_cast<uint64_t>(
peconv::load_pe_module(modulePath.c_str(), mappedPeSize, false, false));
if (!moduleBase) {
return;
}
// 添加到虚拟机
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PushModuleToVM(importModule->dll_name, moduleBase);
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}
auto Sandbox::ResoveImport() -> void {
// 处理延迟导入
peconv::load_delayed_imports(static_cast<BYTE*>(m_peInfo->peBuffer), 0);
// 解析导入表
cListImportNames importCallback(static_cast<BYTE*>(m_peInfo->peBuffer),
m_peInfo->peSize, m_impFuncDict);
if (!peconv::process_import_table(static_cast<BYTE*>(m_peInfo->peBuffer),
m_peInfo->peSize, &importCallback)) {
throw std::runtime_error("Failed to process import table");
}
// 处理每个导入模块
for (const auto& importModule : m_impFuncDict) {
processImportModule(importModule.get());
}
}
auto Sandbox::SetupVirtualMachine() -> void {
SegmentSelector cs = {0};
cs.fields.index = 1;
uc_reg_write(m_ucEngine, UC_X86_REG_CS, &cs.all);
SegmentSelector ds = {0};
ds.fields.index = 2;
uc_reg_write(m_ucEngine, UC_X86_REG_DS, &ds.all);
SegmentSelector ss = {0};
ss.fields.index = 2;
uc_reg_write(m_ucEngine, UC_X86_REG_SS, &ss.all);
SegmentSelector es = {0};
es.fields.index = 2;
uc_reg_write(m_ucEngine, UC_X86_REG_ES, &es.all);
SegmentSelector gs = {0};
gs.fields.index = 2;
uc_reg_write(m_ucEngine, UC_X86_REG_GS, &gs.all);
FlagRegister eflags = {0};
eflags.fields.id = 1;
eflags.fields.intf = 1;
eflags.fields.reserved1 = 1;
uc_reg_write(m_ucEngine, UC_X86_REG_EFLAGS, &eflags.all);
uint64_t cr8 = 0;
uc_reg_write(m_ucEngine, UC_X86_REG_CR8, &cr8);
/*
m_KSharedUserDataBase
*/
m_KSharedUserDataBase = 0x7FFE0000;
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uint64_t m_KSharedUserDataEnd = 0x7FFE0FFF; // 0x7FFE2000
m_KSharedUserDataSize = AlignToSectionAlignment(
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m_KSharedUserDataEnd - m_KSharedUserDataBase, PAGE_SIZE);
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uc_mem_map(m_ucEngine, m_KSharedUserDataBase, m_KSharedUserDataSize,
UC_PROT_READ);
uc_mem_write(m_ucEngine, m_KSharedUserDataBase,
(void*)m_KSharedUserDataBase, m_KSharedUserDataSize);
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m_tebBase = TEB_BASE; // 进程TEB地址
m_pebBase = PEB_BASE; // 进程PEB地址
m_envBlockBase = ENV_BLOCK_BASE; // 环境变量块地址
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// stack
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m_stackBase = AlignToSectionAlignment(
this->m_peInfo->isX64 ? STACK_BASE_64 : STACK_BASE_32, 16);
m_stackSize = AlignToSectionAlignment(
this->m_peInfo->isX64 ? STACK_SIZE_64 : STACK_SIZE_32, 16);
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m_stackEnd = m_stackBase + m_stackSize;
// heap
m_heapBase = this->m_peInfo->isX64 ? HEAP_ADDRESS_64 : HEAP_ADDRESS_32;
m_heapSize = this->m_peInfo->isX64 ? HEAP_SIZE_64 : HEAP_SIZE_32;
m_heapEnd = m_heapBase + m_heapSize;
// 根据PE文件类型设置PEB和TEB
if (this->m_peInfo->isX64) {
// 设置64位PEB
m_peb64.ImageBaseAddress = m_peInfo->RecImageBase;
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m_pebEnd =
m_pebBase + AlignToSectionAlignment(sizeof(X64PEB), PAGE_SIZE);
m_tebEnd =
m_tebBase + AlignToSectionAlignment(sizeof(X64TEB), PAGE_SIZE);
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// 设置64位TEB
m_teb64.ClientId.UniqueProcess = GetCurrentProcessId();
m_teb64.ClientId.UniqueThread = GetCurrentThreadId();
m_teb64.ProcessEnvironmentBlock = reinterpret_cast<X64PEB*>(m_pebBase);
m_teb64.NtTib.StackBase = (DWORD64)m_stackBase;
m_teb64.NtTib.StackLimit = (DWORD64)m_stackSize;
// 设置堆
m_peb64.ProcessHeap = m_heapBase;
// 设置GS基址结构
m_gsBaseStruct.teb = m_tebBase;
m_gsBaseStruct.peb = m_pebBase;
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uint64_t gsAllocSize =
AlignToSectionAlignment(sizeof(struct_gs_base), PAGE_SIZE);
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// 映射PEB到虚拟内存
uc_mem_map(m_ucEngine, m_pebBase, m_pebEnd - m_pebBase,
UC_PROT_READ | UC_PROT_WRITE);
uc_mem_write(m_ucEngine, m_pebBase, &m_peb64, sizeof(X64PEB));
// 映射TEB到虚拟内存
uc_mem_map(m_ucEngine, m_tebBase, m_tebEnd - m_tebBase,
UC_PROT_READ | UC_PROT_WRITE);
uc_mem_write(m_ucEngine, m_tebBase, &m_teb64, sizeof(X64TEB));
// 映射GS基址结构到虚拟内存
uc_mem_map(m_ucEngine, m_gsBase, gsAllocSize, UC_PROT_READ);
uc_mem_write(m_ucEngine, m_gsBase, &m_gsBaseStruct,
sizeof(struct_gs_base));
// 设置GS基址MSR
uc_x86_msr msr;
msr.rid = static_cast<uint32_t>(Msr::kIa32GsBase);
msr.value = m_gsBase;
uc_reg_write(m_ucEngine, UC_X86_REG_MSR, &msr);
} else {
// 设置32位PEB
m_peb32.ImageBaseAddress = static_cast<ULONG>(m_peInfo->RecImageBase);
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m_pebEnd =
m_pebBase + AlignToSectionAlignment(sizeof(X32PEB), PAGE_SIZE);
m_tebEnd =
m_tebBase + AlignToSectionAlignment(sizeof(X32TEB), PAGE_SIZE);
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// 设置32位TEB
m_teb32.ClientId.UniqueProcess = GetCurrentProcessId();
m_teb32.ClientId.UniqueThread = GetCurrentThreadId();
m_teb32.ProcessEnvironmentBlock = static_cast<ULONG>(m_pebBase);
m_teb32.NtTib.StackBase = static_cast<ULONG>(m_stackBase);
m_teb32.NtTib.StackLimit = static_cast<ULONG>(m_stackSize);
// 设置堆
m_peb32.ProcessHeap = static_cast<ULONG>(m_heapBase);
// 映射PEB到虚拟内存
uc_mem_map(m_ucEngine, m_pebBase, m_pebEnd - m_pebBase,
UC_PROT_READ | UC_PROT_WRITE);
uc_mem_write(m_ucEngine, m_pebBase, &m_peb32, sizeof(X32PEB));
// 映射TEB到虚拟内存
uc_mem_map(m_ucEngine, m_tebBase, m_tebEnd - m_tebBase,
UC_PROT_READ | UC_PROT_WRITE);
uc_mem_write(m_ucEngine, m_tebBase, &m_teb32, sizeof(X32TEB));
// 对于32位我们需要设置FS段寄存器指向TEB
SegmentSelector fs = {0};
fs.fields.index = 3;
uc_reg_write(m_ucEngine, UC_X86_REG_FS, &fs.all);
// 设置FS基址MSR
uc_x86_msr msr;
msr.rid = static_cast<uint32_t>(Msr::kIa32FsBase);
msr.value = m_tebBase;
uc_reg_write(m_ucEngine, UC_X86_REG_MSR, &msr);
}
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// 映射新的内存区域
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size_t envSize =
AlignToSectionAlignment(this->GetEnvStringsSize(), PAGE_SIZE);
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printf("env block size: %llx\n", envSize); // 添加调试输出
uc_err envErr = uc_mem_map(m_ucEngine, m_envBlockBase, envSize,
UC_PROT_READ | UC_PROT_WRITE);
if (envErr != UC_ERR_OK) {
throw std::runtime_error("Failed to map environment block");
}
auto envData = this->GetEnvString();
envErr = uc_mem_write(m_ucEngine, m_envBlockBase, envData.data(),
envData.size() * sizeof(wchar_t));
if (envErr != UC_ERR_OK) {
throw std::runtime_error("Failed to write environment block");
}
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for (DWORD i = 0; i < 64; i++) {
GetTeb64()->TlsSlots[i] = (void*)0x1337ffffff;
}
for (DWORD i = 0; i < 64; i++) {
GetTeb32()->TlsSlots[i] = 0x1337;
}
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}
auto Sandbox::InitEnv(std::shared_ptr<BasicPeInfo> peInfo) -> void {
m_peInfo = peInfo;
if (cs_open(CS_ARCH_X86, peInfo->isX64 ? CS_MODE_64 : CS_MODE_32,
&m_csHandle) != CS_ERR_OK) {
throw std::runtime_error("Failed to initialize Capstone");
}
if (uc_open(UC_ARCH_X86, peInfo->isX64 ? UC_MODE_64 : UC_MODE_32,
&m_ucEngine) != UC_ERR_OK) {
cs_close(&m_csHandle); // 清理已分配的capstone资源
throw std::runtime_error("Failed to initialize Unicorn");
}
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// 一定要确保他是第一个.
auto newModule =
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CreateModuleInfo("huoji.exe", m_peInfo->RecImageBase, m_peInfo->RecImageBase,
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reinterpret_cast<uint64_t>(m_peInfo->peBuffer));
_ASSERTE(m_moduleList.size() == 0);
m_moduleList.push_back(newModule);
// 将模块添加到LDR链表中
if (m_peInfo->isX64) {
AddModuleToLdr(newModule);
}
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ResoveImport();
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ResolveImportExports();
// 修复导入表
cFixImprot importFixer(this);
if (!peconv::load_imports(m_peInfo->peBuffer, &importFixer)) {
throw std::runtime_error("Failed to fix imports");
}
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// 给所有导入表加c3
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for (const auto& module : this->GetModuleList()) {
// 遍历导出函数查找对应名称
for (const auto& exp : module->export_function) {
auto inMemAddr = module->base + exp->function_address;
uc_mem_write(m_ucEngine, inMemAddr, "\xCC", sizeof(char));
}
}
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uc_err ucErr = uc_mem_map(m_ucEngine, m_peInfo->RecImageBase,
m_peInfo->peSize, UC_PROT_ALL);
if (ucErr != UC_ERR_OK) {
throw std::runtime_error("Failed to map memory");
}
uc_mem_write(m_ucEngine, m_peInfo->RecImageBase, m_peInfo->peBuffer,
m_peInfo->peSize);
printf("map file to vm file: %llx\n", m_peInfo->RecImageBase);
printf("map file to vm size: %llx\n", m_peInfo->peSize);
SetupVirtualMachine();
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InitCommandLine(peInfo->inputFilePath);
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}
auto Sandbox::Run(uint64_t address) -> void {
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// 初始化堆栈
uc_err err = uc_mem_map(m_ucEngine, m_stackBase, m_stackSize,
UC_PROT_READ | UC_PROT_WRITE);
if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to map stack memory");
}
// 初始化堆
err = uc_mem_map(m_ucEngine, m_heapBase, m_heapSize,
UC_PROT_READ | UC_PROT_WRITE);
if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to map heap memory");
}
// 设置寄存器
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uint64_t rsp = m_stackEnd - 256;
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err = uc_reg_write(m_ucEngine,
m_peInfo->isX64 ? UC_X86_REG_RSP : UC_X86_REG_ESP, &rsp);
if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to write stack pointer");
}
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uint64_t rbp =
rsp - (m_peInfo->isX64 ? sizeof(uint64_t) : sizeof(uint32_t));
uc_reg_write(m_ucEngine, m_peInfo->isX64 ? UC_X86_REG_RBP : UC_X86_REG_EBP,
&rbp);
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// 设置入口点
uint64_t entryPoint = (m_peInfo->RecImageBase + m_peInfo->entryPoint);
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// 添加钩子
uc_hook hook_code, hook_mem, hook_mem_unmap, hook_mem_write, hook_syscall;
// 代码执行钩子
err = uc_hook_add(m_ucEngine, &hook_code, UC_HOOK_CODE,
reinterpret_cast<void*>(sandboxCallbacks::handleCodeRun),
this, 1, 0);
if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to add code hook");
}
// 内存读取钩子
err =
uc_hook_add(m_ucEngine, &hook_mem, UC_HOOK_MEM_READ | UC_HOOK_MEM_FETCH,
reinterpret_cast<void*>(sandboxCallbacks::handleMemoryRead),
this, 1, 0);
if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to add memory read hook");
}
// 未映射内存访问钩子
err = uc_hook_add(
m_ucEngine, &hook_mem_unmap,
UC_HOOK_MEM_FETCH_UNMAPPED | UC_HOOK_MEM_READ_UNMAPPED |
UC_HOOK_MEM_WRITE_UNMAPPED | UC_HOOK_MEM_FETCH_PROT,
reinterpret_cast<void*>(sandboxCallbacks::handleMemoryUnmapRead), this,
1, 0);
if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to add unmapped memory hook");
}
// 内存写入钩子
err = uc_hook_add(
m_ucEngine, &hook_mem_write, UC_HOOK_MEM_WRITE | UC_HOOK_MEM_WRITE_PROT,
reinterpret_cast<void*>(sandboxCallbacks::handleMemoryWrite), this, 1,
0);
if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to add memory write hook");
}
// 系统调用钩子
err = uc_hook_add(m_ucEngine, &hook_syscall, UC_HOOK_INTR | UC_HOOK_INSN,
reinterpret_cast<void*>(sandboxCallbacks::handleSyscall),
this, 1, 0, UC_X86_INS_SYSCALL);
if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to add syscall hook");
}
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// 系统调用钩子
err = uc_hook_add(m_ucEngine, &hook_syscall, UC_HOOK_INTR | UC_HOOK_INSN,
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reinterpret_cast<void*>(sandboxCallbacks::handleSyscall),
this, 1, 0, UC_X86_INS_SYSCALL);
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if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to add syscall hook");
}
auto customIP = address;
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// 设置EIP/RIP
err = uc_reg_write(m_ucEngine,
m_peInfo->isX64 ? UC_X86_REG_RIP : UC_X86_REG_EIP,
&entryPoint);
if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to set entry point");
}
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InitApiHooks();
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std::cout << "Starting execution at " << std::hex << entryPoint
<< std::endl;
uint64_t timeout = 60 * 1000 * 1000;
// 1.入口点是必须跑的
if (m_peInfo->isDll) {
// 给rcx和rdx设置dll应该设置的
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auto dll_fdwReason = 1; // DLL_PROCESS_ATTACH
if (m_peInfo->isX64) {
uc_reg_write(m_ucEngine, UC_X86_REG_RCX, &m_peInfo->RecImageBase);
uc_reg_write(m_ucEngine, UC_X86_REG_RDX, &dll_fdwReason);
} else {
// 32位使用栈传参而不是寄存器传参
uint32_t rsp;
uc_reg_read(m_ucEngine, UC_X86_REG_ESP, &rsp);
// 为参数腾出空间
rsp -= 3 * 4; // 三个参数hinstDLL, fdwReason, lpvReserved
uc_reg_write(m_ucEngine, UC_X86_REG_ESP, &rsp);
// 按照从右到左的顺序压栈
uint32_t lpvReserved = 0; // 第三个参数为NULL
uint32_t reason = dll_fdwReason; // DLL_PROCESS_ATTACH
uint32_t imageBase = static_cast<uint32_t>(m_peInfo->RecImageBase);
// 按照从右到左的调用约定写入参数到栈上
uc_mem_write(m_ucEngine, rsp, &lpvReserved,
sizeof(uint32_t)); // lpvReserved (最右侧参数最先入栈)
uc_mem_write(m_ucEngine, rsp + 4, &reason,
sizeof(uint32_t)); // fdwReason (中间参数次之入栈)
uc_mem_write(m_ucEngine, rsp + 8, &imageBase,
sizeof(uint32_t)); // hinstDLL (最左侧参数最后入栈)
// 在Windows下DLL的返回地址也需要压栈
uint32_t returnAddress = 0xABABABAB; // 虚拟的返回地址
rsp -= 4; // 为返回地址腾出空间
uc_reg_write(m_ucEngine, UC_X86_REG_ESP, &rsp);
uc_mem_write(m_ucEngine, rsp, &returnAddress, sizeof(uint32_t));
}
}
err = uc_emu_start(m_ucEngine, entryPoint, m_peInfo->imageEnd, timeout, 0);
// 2. 有自定义地址 再跑自定义地址
std::cerr << "Entry Point Emulation error: " << uc_strerror(err)
<< std::endl;
if (address != 0) {
err = uc_emu_start(m_ucEngine, address, m_peInfo->imageEnd, timeout, 0);
std::cerr << "Custom Emulation error: " << uc_strerror(err)
<< std::endl;
}
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}
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auto Sandbox::GetEnvString() -> std::vector<wchar_t> {
std::vector<wchar_t> envBlock;
// 添加一些基本的环境变量
const std::wstring vars[] = {
L"ALLUSERSPROFILE=C:\\ProgramData",
L"APPDATA=C:\\Users\\User\\AppData\\Roaming",
L"CommonProgramFiles=C:\\Program Files\\Common Files",
L"COMPUTERNAME=DESKTOP",
L"ComSpec=C:\\Windows\\system32\\cmd.exe",
L"HOMEDRIVE=C:",
L"HOMEPATH=\\Users\\User",
L"LOCALAPPDATA=C:\\Users\\User\\AppData\\Local",
L"NUMBER_OF_PROCESSORS=8",
L"OS=Windows_NT",
L"Path=C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem",
L"PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC",
L"PROCESSOR_ARCHITECTURE=AMD64",
L"ProgramData=C:\\ProgramData",
L"ProgramFiles=C:\\Program Files",
L"PROMPT=$P$G",
L"SystemDrive=C:",
L"SystemRoot=C:\\Windows",
L"TEMP=C:\\Users\\User\\AppData\\Local\\Temp",
L"TMP=C:\\Users\\User\\AppData\\Local\\Temp",
L"USERDOMAIN=DESKTOP",
L"USERNAME=User",
L"USERPROFILE=C:\\Users\\User",
L"windir=C:\\Windows"};
// 将环境变量添加到块中
for (const auto& var : vars) {
envBlock.insert(envBlock.end(), var.begin(), var.end());
envBlock.push_back(L'\0'); // 每个变量以null结尾
}
envBlock.push_back(L'\0'); // 环境块以额外的null结尾
return envBlock;
}
auto Sandbox::GetEnvStringsSize() -> size_t {
return GetEnvString().size() * sizeof(wchar_t);
}
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auto Sandbox::getVirtualMemorySize(BYTE* peBuffer) -> size_t {
if (!peBuffer) {
return 0;
}
// 解析PE头
auto* dosHeader = reinterpret_cast<PIMAGE_DOS_HEADER>(peBuffer);
if (dosHeader->e_magic != IMAGE_DOS_SIGNATURE) {
return 0;
}
auto* ntHeaders = reinterpret_cast<PIMAGE_NT_HEADERS>(
reinterpret_cast<LPBYTE>(peBuffer) + dosHeader->e_lfanew);
// 获取区段头
auto* sectionHeader = reinterpret_cast<PIMAGE_SECTION_HEADER>(
reinterpret_cast<PUCHAR>(ntHeaders) + sizeof(ntHeaders->Signature) +
sizeof(ntHeaders->FileHeader) +
ntHeaders->FileHeader.SizeOfOptionalHeader);
DWORD minOffset = UINT_MAX;
DWORD totalSize = 0;
// 遍历所有区段
for (WORD i = 0; i < ntHeaders->FileHeader.NumberOfSections; i++) {
const auto& section = sectionHeader[i];
// 查找最小虚拟地址偏移
if (section.VirtualAddress < minOffset) {
minOffset = section.VirtualAddress;
}
// 累加虚拟大小
totalSize += section.Misc.VirtualSize;
}
// 添加最小偏移到总大小
totalSize += minOffset;
return static_cast<size_t>(totalSize);
}
auto Sandbox::DumpPE() -> std::pair<std::unique_ptr<BYTE[]>, size_t> {
// 查找目标模块 - 这里我们使用主模块(通常是被分析的可执行文件)
std::shared_ptr<struct_moudle> targetModule = nullptr;
for (const auto& module : m_moduleList) {
if (strcmp(module->name, "huoji.exe") == 0) {
targetModule = module;
break;
}
}
if (!targetModule) {
throw std::runtime_error("No modules found to dump");
}
// 计算虚拟内存大小
auto virtualMemorySize = getVirtualMemorySize(m_peInfo->peBuffer);
// 创建用于存储转储数据的缓冲区
auto resultBuffer = std::make_unique<BYTE[]>(virtualMemorySize);
// 从虚拟机内存中读取PE文件
uc_err err = uc_mem_read(m_ucEngine, m_peInfo->RecImageBase,
resultBuffer.get(), virtualMemorySize);
if (err != UC_ERR_OK) {
throw std::runtime_error("Failed to read memory during PE dump: " +
std::string(uc_strerror(err)));
}
// 确保PE头部的签名有效
auto* dosHeader = reinterpret_cast<PIMAGE_DOS_HEADER>(resultBuffer.get());
if (dosHeader->e_magic != IMAGE_DOS_SIGNATURE) {
throw std::runtime_error("Invalid DOS signature in dumped PE");
}
auto* ntHeaders = reinterpret_cast<PIMAGE_NT_HEADERS>(resultBuffer.get() +
dosHeader->e_lfanew);
if (ntHeaders->Signature != IMAGE_NT_SIGNATURE) {
throw std::runtime_error("Invalid NT signature in dumped PE");
}
// 获取当前RIP/EIP作为新的入口点
uint64_t currentEntryPoint = 0;
if (this->GetCrossSectionExecution().size() > 0) {
currentEntryPoint = this->GetCrossSectionExecution()
[this->GetCrossSectionExecution().size() - 1] -
m_peInfo->RecImageBase;
}
PIMAGE_SECTION_HEADER sectionHeaders = nullptr;
WORD numberOfSections = 0;
// 处理32位或64位PE文件
if (m_peInfo->isX64) {
auto* optHeader64 =
&reinterpret_cast<PIMAGE_NT_HEADERS64>(ntHeaders)->OptionalHeader;
optHeader64->ImageBase = m_peInfo->RecImageBase;
if (currentEntryPoint != 0) {
// 修改入口点为当前执行位置
optHeader64->AddressOfEntryPoint =
static_cast<DWORD>(currentEntryPoint);
}
// 修改SizeOfImage
optHeader64->SizeOfImage = static_cast<DWORD>(AlignToSectionAlignment(
virtualMemorySize, optHeader64->SectionAlignment));
// 修改DllCharacteristics以移除ASLR标记
optHeader64->DllCharacteristics &=
~IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE;
// 获取区段头信息
sectionHeaders = reinterpret_cast<PIMAGE_SECTION_HEADER>(
reinterpret_cast<ULONG_PTR>(ntHeaders) +
sizeof(ntHeaders->Signature) + sizeof(ntHeaders->FileHeader) +
ntHeaders->FileHeader.SizeOfOptionalHeader);
numberOfSections = ntHeaders->FileHeader.NumberOfSections;
} else {
auto* optHeader32 =
&reinterpret_cast<PIMAGE_NT_HEADERS32>(ntHeaders)->OptionalHeader;
optHeader32->ImageBase = static_cast<DWORD>(m_peInfo->RecImageBase);
if (currentEntryPoint != 0) {
// 修改入口点为当前执行位置
optHeader32->AddressOfEntryPoint =
static_cast<DWORD>(currentEntryPoint);
}
// 修改SizeOfImage
optHeader32->SizeOfImage = static_cast<DWORD>(AlignToSectionAlignment(
virtualMemorySize, optHeader32->SectionAlignment));
// 修改DllCharacteristics以移除ASLR标记
optHeader32->DllCharacteristics &=
~IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE;
// 获取区段头信息
sectionHeaders = reinterpret_cast<PIMAGE_SECTION_HEADER>(
reinterpret_cast<ULONG_PTR>(ntHeaders) +
sizeof(ntHeaders->Signature) + sizeof(ntHeaders->FileHeader) +
ntHeaders->FileHeader.SizeOfOptionalHeader);
numberOfSections = ntHeaders->FileHeader.NumberOfSections;
}
// 更新代码基址和大小
UpdateBaseOfCode(sectionHeaders, ntHeaders, numberOfSections,
static_cast<DWORD>(currentEntryPoint));
// 修复区段
FixSections(sectionHeaders, numberOfSections, virtualMemorySize);
// 创建一个ExportsMapper对象用于导入表修复
peconv::ExportsMapper exportsMap;
// 添加所有已加载模块到导出表映射中
for (const auto& module : m_moduleList) {
if (module->base == 0 || module->size == 0) {
continue;
}
// 创建临时缓冲区以存储模块内容
std::unique_ptr<BYTE[]> moduleBuffer =
std::make_unique<BYTE[]>(module->size);
// 从虚拟机内存读取模块内容
uc_err readErr = uc_mem_read(m_ucEngine, module->base,
moduleBuffer.get(), module->size);
if (readErr != UC_ERR_OK) {
printf(
"Warning: Could not read module %s for exports mapping: %s\n",
module->name, uc_strerror(readErr));
continue;
}
// 添加模块到导出表映射
exportsMap.add_to_lookup(module->name,
reinterpret_cast<HMODULE>(moduleBuffer.get()),
module->base);
}
// 这里有一个严重的问题,就懒得处理了:
// 壳里面吐出来的代码的导入表和壳的导入表不是同样一个.
// 这个修的是壳的 导入表,所以导入表 修 不 全
// 有个很简单的办法,需要搜索IAT结构,然后修改脱壳后的IAT的字段到壳的字段里面,然后再执行一次fix_imports
// 懒得写了,家庭作业.自己完成
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bool importsFixed = peconv::fix_imports(
resultBuffer.get(), virtualMemorySize, exportsMap, nullptr);
if (importsFixed) {
printf("PE file imports fixed successfully\n");
} else {
printf("Warning: Failed to fix PE file imports\n");
}
size_t out_size = 0;
// 重新计算校验和
if (m_peInfo->isX64) {
auto* optHeader64 =
&reinterpret_cast<PIMAGE_NT_HEADERS64>(ntHeaders)->OptionalHeader;
optHeader64->CheckSum =
CalculateChecksum(resultBuffer.get(), virtualMemorySize);
} else {
auto* optHeader32 =
&reinterpret_cast<PIMAGE_NT_HEADERS32>(ntHeaders)->OptionalHeader;
optHeader32->CheckSum =
CalculateChecksum(resultBuffer.get(), virtualMemorySize);
}
printf(
"PE file dumped successfully from address: 0x%llx, size: %zu bytes\n",
m_peInfo->RecImageBase, virtualMemorySize);
printf("Entry point set to: 0x%llx (RVA: 0x%llx)\n",
m_peInfo->RecImageBase + currentEntryPoint, currentEntryPoint);
return {std::move(resultBuffer), virtualMemorySize};
}
// 修复区段信息
void Sandbox::FixSections(PIMAGE_SECTION_HEADER sectionHeaders,
WORD numberOfSections, size_t virtualMemorySize) {
if (numberOfSections == 0 || sectionHeaders == nullptr) {
return;
}
// 修复每个区段的信息
for (WORD i = 0; i < numberOfSections - 1; i++) {
auto& currentSection = sectionHeaders[i];
auto& nextSection = sectionHeaders[i + 1];
// 修复大小,使之与下一个区段的起始地址对齐
currentSection.SizeOfRawData =
nextSection.VirtualAddress - currentSection.VirtualAddress;
currentSection.PointerToRawData = currentSection.VirtualAddress;
currentSection.Misc.VirtualSize = currentSection.SizeOfRawData;
}
// 修复最后一个区段
auto& lastSection = sectionHeaders[numberOfSections - 1];
lastSection.SizeOfRawData =
static_cast<DWORD>(virtualMemorySize) - lastSection.VirtualAddress;
lastSection.PointerToRawData = lastSection.VirtualAddress;
lastSection.Misc.VirtualSize = lastSection.SizeOfRawData;
}
// 计算校验和
DWORD Sandbox::CalculateChecksum(const BYTE* peBuffer, size_t size) {
DWORD sum = 0;
const DWORD* ptr = reinterpret_cast<const DWORD*>(peBuffer);
const DWORD count = static_cast<DWORD>(size / sizeof(DWORD));
// 获取校验和字段的偏移
const auto dosHeader = (PIMAGE_DOS_HEADER)(peBuffer);
const auto ntHeaders = (PIMAGE_NT_HEADERS)(peBuffer + dosHeader->e_lfanew);
DWORD checksumOffset = dosHeader->e_lfanew +
FIELD_OFFSET(IMAGE_NT_HEADERS, OptionalHeader) +
FIELD_OFFSET(IMAGE_OPTIONAL_HEADER, CheckSum);
// 计算总和,跳过校验和字段本身
for (DWORD i = 0; i < count; i++) {
// 跳过校验和字段
if ((i * sizeof(DWORD)) == checksumOffset ||
(i * sizeof(DWORD)) == checksumOffset + sizeof(DWORD) - 1) {
continue;
}
sum += ptr[i];
// 处理溢出
if (sum < ptr[i]) {
sum++;
}
}
// 完成计算
sum = (sum & 0xFFFF) + (sum >> 16);
sum = (sum & 0xFFFF) + (sum >> 16);
sum = sum + static_cast<DWORD>(size);
return sum;
}
// 按区段对齐大小进行对齐
DWORD Sandbox::AlignToSectionAlignment(size_t size, DWORD alignment) {
return static_cast<DWORD>(((size + alignment - 1) / alignment) * alignment);
}
// 更新代码基址和代码大小
void Sandbox::UpdateBaseOfCode(PIMAGE_SECTION_HEADER sectionHeader,
PIMAGE_NT_HEADERS ntHeaders,
WORD numberOfSections, DWORD entryPoint) {
if (sectionHeader == nullptr || ntHeaders == nullptr ||
numberOfSections == 0) {
return;
}
DWORD baseOfCode = 0;
DWORD sizeOfCode = 0;
bool foundSection = false;
// 寻找包含入口点的区段
for (WORD i = 0; i < numberOfSections; i++) {
auto& section = sectionHeader[i];
if (entryPoint >= section.VirtualAddress &&
entryPoint < (section.VirtualAddress + section.Misc.VirtualSize)) {
baseOfCode = section.VirtualAddress;
sizeOfCode = section.Misc.VirtualSize;
foundSection = true;
break;
}
}
// 如果没有找到包含入口点的区段,使用第一个可执行区段
if (!foundSection) {
for (WORD i = 0; i < numberOfSections; i++) {
auto& section = sectionHeader[i];
if (section.Characteristics & IMAGE_SCN_MEM_EXECUTE) {
baseOfCode = section.VirtualAddress;
sizeOfCode = section.Misc.VirtualSize;
foundSection = true;
break;
}
}
}
// 更新NT头部信息
if (foundSection) {
if (ntHeaders->FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64) {
// 64位PE
auto* optHeader64 =
&reinterpret_cast<PIMAGE_NT_HEADERS64>(ntHeaders)
->OptionalHeader;
optHeader64->BaseOfCode = baseOfCode;
} else {
// 32位PE
auto* optHeader32 =
&reinterpret_cast<PIMAGE_NT_HEADERS32>(ntHeaders)
->OptionalHeader;
optHeader32->BaseOfCode = baseOfCode;
optHeader32->SizeOfCode = sizeOfCode;
}
}
}
auto Sandbox::InitializeLdrData() -> void {
if (m_peInfo->isX64 && m_peb64.Ldr == 0) {
// 为LDR_DATA分配内存
uint64_t ldrDataAddress = m_pebBase + sizeof(X64PEB);
m_pebEnd = ldrDataAddress + sizeof(X64_PEB_LDR_DATA);
m_peb64.Ldr = ldrDataAddress;
// 映射LDR数据内存
uc_mem_map(m_ucEngine, ldrDataAddress, sizeof(X64_PEB_LDR_DATA),
UC_PROT_ALL);
// 初始化LDR_DATA结构
X64_PEB_LDR_DATA ldrData = {0};
ldrData.Length = sizeof(X64_PEB_LDR_DATA);
ldrData.Initialized = 1;
// 初始化链表头 - 使用适当的类型转换
LIST_ENTRY inLoadOrderList = {
reinterpret_cast<LIST_ENTRY*>(
ldrDataAddress +
offsetof(X64_PEB_LDR_DATA, InLoadOrderModuleList)),
reinterpret_cast<LIST_ENTRY*>(
ldrDataAddress +
offsetof(X64_PEB_LDR_DATA, InLoadOrderModuleList))};
ldrData.InLoadOrderModuleList = inLoadOrderList;
LIST_ENTRY inMemoryOrderList = {
reinterpret_cast<LIST_ENTRY*>(
ldrDataAddress +
offsetof(X64_PEB_LDR_DATA, InMemoryOrderModuleList)),
reinterpret_cast<LIST_ENTRY*>(
ldrDataAddress +
offsetof(X64_PEB_LDR_DATA, InMemoryOrderModuleList))};
ldrData.InMemoryOrderModuleList = inMemoryOrderList;
LIST_ENTRY inInitOrderList = {
reinterpret_cast<LIST_ENTRY*>(
ldrDataAddress +
offsetof(X64_PEB_LDR_DATA, InInitializationOrderModuleList)),
reinterpret_cast<LIST_ENTRY*>(
ldrDataAddress +
offsetof(X64_PEB_LDR_DATA, InInitializationOrderModuleList))};
ldrData.InInitializationOrderModuleList = inInitOrderList;
uc_mem_write(m_ucEngine, ldrDataAddress, &ldrData,
sizeof(X64_PEB_LDR_DATA));
// 更新PEB中的Ldr指针
uc_mem_write(m_ucEngine, m_pebBase, &m_peb64, sizeof(X64PEB));
}
}
auto Sandbox::CreateLdrEntry(const std::shared_ptr<struct_moudle>& module,
uint64_t entryAddress, uint64_t fullNameAddress,
uint64_t baseNameAddress) -> LDR_DATA_TABLE_ENTRY {
LDR_DATA_TABLE_ENTRY entry = {0};
entry.DllBase = reinterpret_cast<PVOID>(module->base);
entry.EntryPoint = reinterpret_cast<PVOID>(module->base + module->entry);
entry.SizeOfImages = static_cast<ULONG>(module->size);
// 准备模块名称的Unicode字符串
wchar_t nameBuffer[MAX_PATH] = {0};
std::mbstowcs(nameBuffer, module->name, strlen(module->name));
// 设置全路径
entry.FullDllName.Length =
static_cast<USHORT>(wcslen(nameBuffer) * sizeof(wchar_t));
entry.FullDllName.MaximumLength = MAX_PATH * sizeof(wchar_t);
entry.FullDllName.Buffer = reinterpret_cast<PWSTR>(fullNameAddress);
// 设置基本名称
entry.BaseDllName.Length =
static_cast<USHORT>(wcslen(nameBuffer) * sizeof(wchar_t));
entry.BaseDllName.MaximumLength = MAX_PATH * sizeof(wchar_t);
entry.BaseDllName.Buffer = reinterpret_cast<PWSTR>(baseNameAddress);
// 写入Unicode字符串
uc_mem_write(m_ucEngine, fullNameAddress, nameBuffer,
(wcslen(nameBuffer) + 1) * sizeof(wchar_t));
uc_mem_write(m_ucEngine, baseNameAddress, nameBuffer,
(wcslen(nameBuffer) + 1) * sizeof(wchar_t));
return entry;
}
auto Sandbox::UpdateLdrLinks(const LDR_DATA_TABLE_ENTRY& entry,
uint64_t entryAddress, X64_PEB_LDR_DATA& ldrData)
-> void {
// 更新LDR_DATA中的链表头
ldrData.InLoadOrderModuleList.Flink = reinterpret_cast<LIST_ENTRY*>(
entryAddress + offsetof(LDR_DATA_TABLE_ENTRY, InLoadOrderLinks));
ldrData.InMemoryOrderModuleList.Flink = reinterpret_cast<LIST_ENTRY*>(
entryAddress + offsetof(LDR_DATA_TABLE_ENTRY, InMemoryOrderLinks));
ldrData.InInitializationOrderModuleList.Flink =
reinterpret_cast<LIST_ENTRY*>(
entryAddress +
offsetof(LDR_DATA_TABLE_ENTRY, InInitializationOrderLinks));
// 写回更新后的LDR_DATA
uc_mem_write(m_ucEngine, m_peb64.Ldr, &ldrData, sizeof(X64_PEB_LDR_DATA));
}
auto Sandbox::AddModuleToLdr(const std::shared_ptr<struct_moudle>& module)
-> void {
if (!m_peInfo->isX64) {
return; // 暂时只处理64位
}
if (m_peb64.Ldr == 0) {
InitializeLdrData();
}
// 为模块创建LDR_DATA_TABLE_ENTRY
uint64_t entrySize = sizeof(LDR_DATA_TABLE_ENTRY) +
MAX_PATH * 2; // 额外空间用于Unicode字符串
uint64_t entryAddress = m_pebEnd;
m_pebEnd += entrySize;
// 映射内存
uc_mem_map(m_ucEngine, entryAddress, entrySize, UC_PROT_ALL);
// 设置Unicode字符串地址
uint64_t fullNameAddress = entryAddress + sizeof(LDR_DATA_TABLE_ENTRY);
uint64_t baseNameAddress = fullNameAddress + MAX_PATH;
// 创建并初始化LDR_DATA_TABLE_ENTRY
auto entry =
CreateLdrEntry(module, entryAddress, fullNameAddress, baseNameAddress);
// 从PEB读取当前LDR_DATA结构
X64_PEB_LDR_DATA ldrData;
uc_mem_read(m_ucEngine, m_peb64.Ldr, &ldrData, sizeof(X64_PEB_LDR_DATA));
// 设置链表指针
entry.InLoadOrderLinks.Flink = reinterpret_cast<LIST_ENTRY*>(
reinterpret_cast<uintptr_t>(ldrData.InLoadOrderModuleList.Flink));
entry.InLoadOrderLinks.Blink = reinterpret_cast<LIST_ENTRY*>(
m_peb64.Ldr + offsetof(X64_PEB_LDR_DATA, InLoadOrderModuleList));
entry.InMemoryOrderLinks.Flink = reinterpret_cast<LIST_ENTRY*>(
reinterpret_cast<uintptr_t>(ldrData.InMemoryOrderModuleList.Flink));
entry.InMemoryOrderLinks.Blink = reinterpret_cast<LIST_ENTRY*>(
m_peb64.Ldr + offsetof(X64_PEB_LDR_DATA, InMemoryOrderModuleList));
entry.InInitializationOrderLinks.Flink =
reinterpret_cast<LIST_ENTRY*>(reinterpret_cast<uintptr_t>(
ldrData.InInitializationOrderModuleList.Flink));
entry.InInitializationOrderLinks.Blink = reinterpret_cast<LIST_ENTRY*>(
m_peb64.Ldr +
offsetof(X64_PEB_LDR_DATA, InInitializationOrderModuleList));
// 写入LDR_DATA_TABLE_ENTRY结构
uc_mem_write(m_ucEngine, entryAddress, &entry,
sizeof(LDR_DATA_TABLE_ENTRY));
// 更新链表
UpdateLdrLinks(entry, entryAddress, ldrData);
printf("Added module '%s' to LDR data tables at 0x%llx\n", module->name,
entryAddress);
}