Shellcrypt

A single-file cross-platform quality of life tool to obfuscate a given shellcode file and output in a useful format for pasting directly into your source code.

Contributors

These are going here because they deserve it

• An00bRektn github twitter ♥
• 0xtejas github

Encryption Methods

Shellcrypt currently supports the following encryption methods (more to come in the future!)

• AES (128-bit CBC)
• ChaCha20
• RC4
• Salsa20
• XOR

Supported Formats

Shellcrypt currently supports the following output formats (more to come in the future!)

• C
• C#
• Nim
• Golang
• Python
• Powershell
• Visual Basic for Applications (VBA)
• Visual Basic Script (VBS)
• Rust
• Raw

Usage

Encrypt shellcode with a random key

python ./shellcrypt.py -i ./shellcode.bin -f c

Encrypt shellcode with 128-bit AES CBC

python ./shellcrypt.py -i ./shellcode.bin -e aes -f c

Encrypt shellcode with a user-specified key

python ./shellcrypt.py -i ./shellcode.bin -f c -k 6d616c77617265

Output in nim format

python ./shellcrypt.py -i ./shellcode.bin -f nim

Output to file

python ./shellcrypt.py -i ./shellcode.bin -f nim -o ./shellcode_out.nim

Get a list of encryption methods

python ./shellcrypt.py --ciphers

Get a list of output formats

python ./shellcrypt.py --formats

Help

███████╗██╗  ██╗███████╗██╗     ██╗      ██████╗██████╗ ██╗   ██╗██████╗ ████████╗
██╔════╝██║  ██║██╔════╝██║     ██║     ██╔════╝██╔══██╗╚██╗ ██╔╝██╔══██╗╚══██╔══╝
███████╗███████║█████╗  ██║     ██║     ██║     ██████╔╝ ╚████╔╝ ██████╔╝   ██║
╚════██║██╔══██║██╔══╝  ██║     ██║     ██║     ██╔══██╗  ╚██╔╝  ██╔═══╝    ██║
███████║██║  ██║███████╗███████╗███████╗╚██████╗██║  ██║   ██║   ██║        ██║
╚══════╝╚═╝  ╚═╝╚══════╝╚══════╝╚══════╝ ╚═════╝╚═╝  ╚═╝   ╚═╝   ╚═╝        ╚═╝
v1.5 beta

 ~ @0xLegacyy (Jordan Jay)

usage: shellcrypt [-h] [-i INPUT] [-e ENCRYPT] [-k KEY] [-n NONCE] [-f FORMAT] [--formats] [--ciphers] [-o OUTPUT]
                  [-v]

options:
  -h, --help            show this help message and exit
  -i INPUT, --input INPUT
                        Path to file to be encrypted.
  -e ENCRYPT, --encrypt ENCRYPT
                        Encryption method to use, default 'xor'.
  -k KEY, --key KEY     Encryption key in hex format, default (random 16 bytes).
  -n NONCE, --nonce NONCE
                        Encryption nonce in hex format, default (random 16 bytes).
  -f FORMAT, --format FORMAT
                        Output format, specify --formats for a list of formats.
  --formats             Show a list of valid formats
  --ciphers             Show a list of valid ciphers
  -o OUTPUT, --output OUTPUT
                        Path to output file
  -v, --version         Shows the version and exits

Future Development Goals

1. More output formats (rust etc.)
2. More encryption methods
3. Compression methods
4. Create a config system that allows for chaining encryption/encoding/compression methods
5. Flag to add a decrypt method to the generated code
6. Shikata encoder mayhaps?

pssst this is still heavily in development so if you'd like to contribute, have a go at working on one of the many TODO's in the code :)