https://github.com/rsrdjan/encpe

Portable Executable (PE) binary encryptor
https://github.com/rsrdjan/encpe

Last synced: about 1 month ago
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Portable Executable (PE) binary encryptor

• Host: GitHub
• URL: https://github.com/rsrdjan/encpe
• Owner: rsrdjan
• License: bsd-3-clause
• Created: 2023-10-01T12:26:45.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2023-10-01T19:04:32.000Z (over 1 year ago)
• Last Synced: 2023-10-02T14:12:26.897Z (over 1 year ago)
• Language: C
• Size: 6.84 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# encpe

Portable Executable (PE) binary encryptor

RC4 encryption of Portable Executable (PE) binaries .text section with self-decryption on execution. Uses ENCPE_ macros to mark the code block for encryption and code block as key.

# Usage:

`encpe.exe filename offset len key_offset key_len`

        filename:       path to PE executable

        offset:         offset in file to start encryption

        

        len:            number of bytes to encrypt

        

        key_offset:     offset of key in file

        

        key_len         number of bytes that holds the key

For testing purposes `test.c` file is provided.  

Compile it with `cl.exe test.c encpe.c /DU_BUILD` and then run to get run-time offsets.  

Use offsets for encryption with encpe.exe:  

`encpe.exe test.exe 0x10 0x20 0x30 0x40`

Recipe taken from *"Secure programming cookbook for C and C++"*, 2005 John Viega and Matt Messier and ported for Win32.