当前位置: 首页>>代码示例>>C++>>正文


C++ AsmJitHelper::reset方法代码示例

本文整理汇总了C++中AsmJitHelper::reset方法的典型用法代码示例。如果您正苦于以下问题:C++ AsmJitHelper::reset方法的具体用法?C++ AsmJitHelper::reset怎么用?C++ AsmJitHelper::reset使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在AsmJitHelper的用法示例。


在下文中一共展示了AsmJitHelper::reset方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: CreateVEH


//.........这里部分代码省略.........
		//
		a->mov(asmjit::host::rax, asmjit::host::qword_ptr(asmjit::host::rcx));
		a->cmp(asmjit::host::dword_ptr(asmjit::host::rax), EH_EXCEPTION_NUMBER);            // Exception code
		a->jne(lExit);
		a->cmp(asmjit::host::qword_ptr(asmjit::host::rax, 0x20), EH_PURE_MAGIC_NUMBER1);    // Sub code
		a->jne(lExit);
		a->cmp(asmjit::host::qword_ptr(asmjit::host::rax, 0x38), 0);                        // Image base
		a->jne(lExit);
		a->mov(asmjit::host::r9, _pModTable.Ptr());
		a->mov(asmjit::host::rdx, asmjit::host::qword_ptr(asmjit::host::r9));               // Record count
		a->add(asmjit::host::r9, sizeof(table.count));
		a->xor_(asmjit::host::r10, asmjit::host::r10);
		a->bind(lLoop1);
		a->mov(asmjit::host::r8, asmjit::host::qword_ptr(asmjit::host::rax, 0x30));
		a->mov(asmjit::host::r11, asmjit::host::qword_ptr(asmjit::host::r9));
		a->cmp(asmjit::host::r8, asmjit::host::r11);
		a->jl(skip1);
		a->add(asmjit::host::r11, asmjit::host::qword_ptr(asmjit::host::r9, sizeof(table.entry[0].base)));    // Size
		a->cmp(asmjit::host::r8, asmjit::host::r11);
		a->jg(skip1);
		a->jmp(found1);
		a->bind(skip1);
		a->add(asmjit::host::r9, sizeof(ExceptionModule));
		a->add(asmjit::host::r10, 1);
		a->cmp(asmjit::host::r10, asmjit::host::rdx);
		a->jne(lLoop1);
		a->jmp(lExit);
		a->bind(found1);
		a->mov(asmjit::host::qword_ptr(asmjit::host::rax, 0x20), EH_MAGIC_NUMBER1);
		a->mov(asmjit::host::rcx, asmjit::host::qword_ptr(asmjit::host::rcx));
		a->mov(asmjit::host::rdx, asmjit::host::qword_ptr(asmjit::host::r9));
		a->mov(asmjit::host::qword_ptr(asmjit::host::rax, 0x38), asmjit::host::rdx);
		a->bind(lExit);
		a->xor_(asmjit::host::rax, asmjit::host::rax);
		a->ret();
		a->db(0xCC);
		a->db(0xCC);
		a->db(0xCC);
		if(_pVEHCode.Write(0, a->getCodeSize(), a->make()) != STATUS_SUCCESS) {
			_pVEHCode.Free();
			return LastNtStatus();
		}
		#else
		UNREFERENCED_PARAMETER(pTargetBase);
		UNREFERENCED_PARAMETER(imageSize);
		// No handler required
		if(partial)
			return STATUS_SUCCESS;
		// VEH codecave
		_pVEHCode = _proc.Memory().Allocate(0x2000);
		_pVEHCode.Release();
		if(!_pVEHCode.Valid())
			return LastNtStatus();
		// Resolve compiler incremental table address, if any
		void *pFunc = ResolveJmp(&VectoredHandler);
		size_t fnSize = static_cast<size_t>(SizeOfProc(pFunc));
		size_t dataOfs = 0, code_ofs = 0, code_ofs2 = 0;;
		// Find and replace magic values
		for(uint8_t *pData = reinterpret_cast<uint8_t*>(pFunc);
		pData < reinterpret_cast<uint8_t*>(pFunc) + fnSize - 4;
			pData++) {
			// LdrpInvertedFunctionTable
			if(*(size_t*)pData == 0xDEADDA7A) {
				dataOfs = pData - reinterpret_cast<uint8_t*>(pFunc);
				continue;
			}
			// DecodeSystemPointer address
			if(*(size_t*)pData == 0xDEADC0DE) {
				code_ofs = pData - reinterpret_cast<uint8_t*>(pFunc);
				break;
			}
			// LdrProtectMrdata address
			if(*(size_t*)pData == 0xDEADC0D2) {
				code_ofs2 = pData - reinterpret_cast<uint8_t*>(pFunc);
				continue;
			}
		}
		auto pDecode = mods.GetExport(mods.GetModule(L"ntdll.dll", Sections, mt), "RtlDecodeSystemPointer").procAddress;
		// Write handler data into target process
		if(!NT_SUCCESS(_pVEHCode.Write(0, fnSize, pFunc)) ||
			!NT_SUCCESS(_pVEHCode.Write(dataOfs, _proc.NativeLdr().LdrpInvertedFunctionTable())) ||
			!NT_SUCCESS(_pVEHCode.Write(code_ofs, static_cast<size_t>(pDecode))) ||
			!NT_SUCCESS(_pVEHCode.Write(code_ofs2, _proc.NativeLdr().LdrProtectMrdata()))) {
			_pVEHCode.Free();
			return LastNtStatus();
		}
		#endif
		// AddVectoredExceptionHandler(0, pHandler);
		auto pAddHandler = mods.GetExport(mods.GetModule(L"ntdll.dll", Sections, mt), "RtlAddVectoredExceptionHandler").procAddress;
		if(pAddHandler == 0)
			return STATUS_NOT_FOUND;
		a->reset();
		a.GenPrologue();
		a.GenCall(static_cast<size_t>(pAddHandler), {0, _pVEHCode.Ptr<size_t>()});
		_proc.Remote().AddReturnWithEvent(a, mt);
		a.GenEpilogue();
		_proc.Remote().ExecInWorkerThread(a->make(), a->getCodeSize(), result);
		_hVEH = static_cast<size_t>(result);
		return (_hVEH == 0 ? STATUS_NOT_FOUND : STATUS_SUCCESS);
	}
开发者ID:MarkHC,项目名称:Blackbone,代码行数:101,代码来源:MExcept.cpp


注:本文中的AsmJitHelper::reset方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。