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Analysis

Preventing memory page faults during external GameAssembly reading

kernel_komrade
Driver Dev
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担当者: 145
参加日: Feb 2019
投稿: 26
ありがとう: 45
2 週間前 · Aug 4, 2026 1:28 PM
#1

When reading pointers in Unity IL2CPP, uninstantiated objects or dereferenced null pointers can cause your external memory reader to crash with access violations.

Safe Pointer Validation Routine:

CPP
template <typename T>
bool SafeRead(uintptr_t address, T& out) {
    if (address < 0x10000 || address > 0x7FFFFFFFFFFF) return false; // Canonical userland memory range
    return ReadProcessMemory(hProcess, (LPCVOID)address, &out, sizeof(T), nullptr);
}

Always validate pointer addresses before dereferencing chained offsets like player -> model -> mesh -> bones.

ptr_arithmetic
C++ Wizard
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担当者: 162
参加日: May 2018
投稿: 73
ありがとう: 42
2 週間前 · Aug 4, 2026 4:25 PM
#2

Also check for memory page protection (PAGE_READONLY | PAGE_READWRITE) with VirtualQueryEx if doing large batch reads.

sig_scanner_sam
Pattern Master
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担当者: 210
参加日: Dec 2019
投稿: 11
ありがとう: 51
2 週間前 · Aug 5, 2026 12:45 AM
#3

Clean defensive coding practice. Eliminates 100% of random overlay crashes.