// Simplified pseudo-code for reading a remote process's memory BYTE* ReadRemoteViaKShared(HANDLE hProcess, LPCVOID remoteAddr, SIZE_T size) // 1. Obtain target process CR3 (requires kernel call or direct read from KdDebuggerDataBlock) ULONG_PTR targetCr3 = GetProcessCr3(hProcess); // may still need a syscall // 2. Translate remoteAddr to physical address using targetCr3 // This requires reading physical pages of page tables. // We use KdDebuggerDataBlock's MmPhysicalMemoryBlock to iterate physical pages.
Thus, the reads the entire system’s physical memory without any syscalls after the initial mapping. kshared bypass
Traditional userland memory scanners (e.g., EDRs using NtReadVirtualMemory ) rely on accurate translation of virtual addresses to physical frames. The KShared Bypass technique exploits a specific feature of the Windows Kernel (the KUSER_SHARED_DATA structure) to read physical memory without conventional API calls, thereby evading hooking and introspection. This paper examines the architectural mechanism, implementation methodology, and detection vectors associated with this bypass. // Simplified pseudo-code for reading a remote process's