PE Packer/Crypter Source

PE Packer/Crypter — Source Code

Tool that takes a PE executable (EXE/DLL) and produces a version packed with encrypted:

• Section encryption — Encrypts .text and .data with AES-128-CBC. The key is embedded in the stub of unpacking.
• Unpacking stub — Assembly code (NASM) that executes first, decrypts the original sections in memory, and jumps to the original entry point.
• PE header modifiestion — Adjusts SizeOfImage, AddressOfEntryPoint, section characteristics.
• Anti-debug basic — IsDebuggerPresent, NtQueryInformationProcess checks in the stub.
• Import preservation — Resolves the IAT original post-decrypted for that the executable works correctly.

Limitatesciones honestas: This packer is educational. Modern AVs detect the generic stub. For real evasion, combine with the pieces from the Evasion & Stealth category.