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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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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;
}
}
}
}
__debugbreak();
return nullptr;
}
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private:
Sandbox* m_sandbox; // Sandbox实例的指针
};
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Sandbox::Sandbox() {}
Sandbox::~Sandbox() {}
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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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}
// 解析PE头
auto* dosHeader = reinterpret_cast<PIMAGE_DOS_HEADER>(moduleBase);
auto* ntHeaders = reinterpret_cast<PIMAGE_NT_HEADERS>(
reinterpret_cast<LPBYTE>(moduleBase) + dosHeader->e_lfanew);
// 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);
// 创建新模块
struct_moudle newModule{};
strncpy(newModule.name, dllName, strlen(dllName));
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newModule.base =
this->m_peInfo->isX64 ? moduleBase : static_cast<uint32_t>(moduleBase);
newModule.real_base = moduleBase;
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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
auto sectionSize =
AlignSize(max(section.Misc.VirtualSize, section.SizeOfRawData),
sectionAlignment);
// 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';
}
m_moduleList.push_back(std::make_shared<struct_moudle>(newModule));
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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,
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UC_PROT_READ | UC_PROT_EXEC);
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uc_mem_write(m_ucEngine, newModule.base, (void*)moduleBase, newModule.size);
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if (peconv::relocate_module((BYTE*)moduleBase, newModule.size,
newModule.base) == false) {
throw std::runtime_error("Failed to relocate module");
}
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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) {
const auto exports = ResolveExport(module->real_base);
for (const auto item : exports) {
printf("import export: [%s] %s => %llx\n", module->name, item->name,
item->function_address);
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) {
printf("skip module name: %s (already loaded)\n", module->name);
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
*/
uint64_t m_KSharedUserDataBase = 0x7FFE0000;
uint64_t m_KSharedUserDataEnd = 0x7FFE0FFF; // 0x7FFE2000
uint64_t m_KSharedUserDataSize =
AlignSize(m_KSharedUserDataEnd - m_KSharedUserDataBase, PAGE_SIZE);
uc_mem_map(m_ucEngine, m_KSharedUserDataBase, m_KSharedUserDataSize,
UC_PROT_READ);
uc_mem_write(m_ucEngine, m_KSharedUserDataBase,
(void*)m_KSharedUserDataBase, m_KSharedUserDataSize);
m_tebBase = TEB_BASE; // 进程TEB地址
m_pebBase = PEB_BASE; // 进程PEB地址
// stack
m_stackBase = this->m_peInfo->isX64 ? STACK_BASE_64 : STACK_BASE_32;
m_stackSize = this->m_peInfo->isX64 ? STACK_SIZE_64 : STACK_SIZE_32;
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;
m_pebEnd = m_pebBase + AlignSize(sizeof(X64PEB), PAGE_SIZE);
m_tebEnd = m_tebBase + AlignSize(sizeof(X64TEB), PAGE_SIZE);
// 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;
uint64_t gsAllocSize = AlignSize(sizeof(struct_gs_base), PAGE_SIZE);
// 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);
m_pebEnd = m_pebBase + AlignSize(sizeof(X32PEB), PAGE_SIZE);
m_tebEnd = m_tebBase + AlignSize(sizeof(X32TEB), PAGE_SIZE);
// 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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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");
}
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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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() -> void {
// 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
uint64_t rsp = m_stackEnd - 128;
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");
}
// 设置入口点
uint64_t entryPoint = m_peInfo->RecImageBase + m_peInfo->entryPoint;
// 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");
}
// 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");
}
// 开始执行
std::cout << "Starting execution at " << std::hex << entryPoint
<< std::endl;
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InitApiHooks();
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err = uc_emu_start(m_ucEngine, entryPoint, m_peInfo->imageEnd, 0, 0);
if (err != UC_ERR_OK) {
std::cerr << "Emulation error: " << uc_strerror(err) << std::endl;
// 32位环境下的错误处理
if (!m_peInfo->isX64) {
uint32_t eip;
uc_reg_read(m_ucEngine, UC_X86_REG_EIP, &eip);
std::cerr << "Error occurred at EIP: 0x" << std::hex << eip
<< std::endl;
// 尝试读取当前指令
uint8_t instruction[16];
if (uc_mem_read(m_ucEngine, eip, instruction,
sizeof(instruction)) == UC_ERR_OK) {
std::cerr << "Instruction bytes: ";
for (int i = 0; i < 16; i++) {
printf("%02X ", instruction[i]);
}
std::cerr << std::endl;
}
}
}
}