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 ♥

Encryption Methods

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

XOR
AES (128-bit CBC)

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)
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

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v1.4 beta

 ~ @0xLegacyy (Jordan Jay)

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

optional arguments:
  -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

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