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@ -14,34 +14,24 @@ Link to write up can be found [here](https://back.engineering/post/virtual-memor
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# example
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```cpp
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// only time driver needs to be loaded is to init physmeme/kernel_ctx...
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nasa::load_drv();
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nasa::kernel_ctx kernel;
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if (kernel.clear_piddb_cache(nasa::drv_key, util::get_file_header((void*)raw_driver)->TimeDateStamp))
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std::cout << "[+] flushed PIDDB Cache for physmeme driver..." << std::endl;
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nasa::unload_drv();
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const std::pair<unsigned, virt_addr_t> my_proc_data = { GetCurrentProcessId(), virt_addr_t{ GetModuleHandle(NULL) } };
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std::cout << "[+] my pid: " << std::hex << my_proc_data.first << std::endl;
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std::cout << "[+] my base: " << std::showbase << std::hex << my_proc_data.second.value << std::endl;
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nasa::mem_ctx my_proc(kernel, my_proc_data.first);
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const auto module_base = my_proc_data.second;
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std::cout << "[+] base address pml4e: " << std::hex << my_proc[module_base.pml4_index].value << std::endl;
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std::cout << "[+] base address pdpte: " << std::hex << my_proc[{module_base.pml4_index, module_base.pdpt_index}].value << std::endl;
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std::cout << "[+] base address pde: " << std::hex << my_proc[{module_base.pml4_index, module_base.pdpt_index, module_base.pd_index}].value << std::endl;
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std::cout << "[+] base address pte: " << std::hex << my_proc[{module_base.pml4_index, module_base.pdpt_index, module_base.pd_index, module_base.pt_index}].value << std::endl;
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vdm::vdm_ctx vdm;
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nasa::mem_ctx my_proc(vdm);
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const auto ntoskrnl_base =
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reinterpret_cast<void*>(
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util::get_kmodule_base("ntoskrnl.exe"));
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const auto ntoskrnl_pde = my_proc.get_pde(ntoskrnl_base);
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std::printf("[+] pde.present -> %d\n", ntoskrnl_pde.second.present);
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std::printf("[+] pde.pfn -> 0x%x\n", ntoskrnl_pde.second.pfn);
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std::printf("[+] pde.large_page -> %d\n", ntoskrnl_pde.second.large_page);
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```
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```
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[+] flushed PIDDB Cache for physmeme driver...
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[+] my pid: 2634
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[+] my base: 00007FF64BBB0000
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[+] base address pml4e: 0xa000000d82b3867
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[+] base address pdpte: 0xa000002df3b4867
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[+] base address pde: 0xa0000016fcb5867
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[+] base address pte: 0x80000001b1185025
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[+] pde.present -> 1
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[+] pde.pfn -> 0x10400
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[+] pde.large_page -> 1
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[+] press any key to close...
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```
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# table entry manipulation
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