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Bypassing EDR with Custom Shellcode Loaders – A Red Teamer's Approach Modern EDRs use user-mode hooks, behavioral analysis, and memory scanning to flag malicious activity. To bypass them, you need precision-crafted tooling. This deep-dive explores advanced evasion techniques: • Direct syscalls to avoid userland hooks • Manual mapping & reflective loading to bypass DLL load events • Section mapping over standard VirtualAlloc to reduce memory footprint • Encrypted payload staging with runtime decryption (XOR/AES) • APC and Thread Hijacking for stealthy execution • Inline patching & ETW patching to neutralize telemetry By building custom shellcode loaders in C/C++ (or even Rust), you gain control, stealth, and adaptability against next-gen EDRs.