A Github action to obfuscate javascript code by using the javascript-obfuscator

Obfuscate javascript and node with Github action to secure your code. The Github action uses the javascript-obfuscator.

🏳️ See the inputs section for detailed descriptions.

      - name: Create distribution path
        run: |
         mkdir -p distribution_path
      
      - name: Low obfuscation test
        uses: KevinRohn/github-action-javascript-obfuscator@v1
        with:
          input_path: input_path
          output_path: distribution_path
          compact: true
          control_flow_flattening: false
          dead_code_injection: false
          debug_protection: false
          debug_protection_interval: 0
          log: false
          disable_console_output: true
          rename_globals: false
          string_array_rotate: true
          self_defending: true
          string_array: true
          string_array_encoding: 'none'
          string_array_threshold: 0.75
          unicode_escape_sequence: false
          target: node

Note: For an detailed documentation, please check the full documentation of the javascript-obfuscator

The action supports the following inputs:

• input_path

  Input path of the js file(s)

  Can be a single js file or also an directory with js files.

  Required: true

• output_path

  Output path to save the obfuscated file(s).

  If you use the same output path as the input path, the postfix obfuscated will be added to the file(s) name. e.g. index-obfuscated.js

  Required: true

• compact

  Compact code output on one line.

  Type: boolean Default: true

  Required: false

• control_flow_flattening

  Enables code control flow flattening. Control flow flattening is a structure transformation of the source code that hinders program comprehension.

  Type: boolean Default: false

  Required: false

• control_flow_flattening_threshold

  The probability that the control flow flattening transformation will be applied to the node.

  Type: number Default: 0.75 Min: 0 Max: 1

  Required: false

• dead_code_injection

  With this option, random blocks of dead code will be added to the obfuscated code.

  Type: boolean Default: false

  Required: false

• dead_code_injection_threshold

  Allows to set percentage of nodes that will affected by deadCodeInjection.

  Type: number Default: 0.4 Min: 0 Max: 1

  Required: false

• debug_protection

  This option makes it almost impossible to use the debugger function of the Developer Tools (both on WebKit-based and Mozilla Firefox).

  Type: boolean Default: false

  Required: false

• debug_protection_interval

  If set, an interval in milliseconds is used to force the debug mode on the Console tab, making it harder to use other features of the Developer Tools. Works if debugProtection is enabled. Recommended value is between 2000 and 4000 milliseconds.

  Type: number Default: 0

  Required: false

• disable_console_output

  Disables the use of console.log, console.info, console.error, console.warn, console.debug, console.exception and console.trace by replacing them with empty functions. This makes the use of the debugger harder.

  Type: boolean Default: false

  Required: false

• domain_lock

  Allows to run the obfuscated source code only on specific domains and/or sub-domains. This makes really hard for someone to just copy and paste your source code and run it elsewhere.

  Type: string[] Default: []

  Required: false

• domain_lock_redirect_url

  Allows the browser to be redirected to a passed URL if the source code is not run on the domains specified by domain_lock.

  Type: string Default: about:blank

  Required: false

• exclude

  A filename or glob which indicates files to exclude from obfuscation.

  Type: string[] Default: []

  Required: false

• force_transform_strings

  Enables force transformation of string literals, which is matched by RegExp patterns (comma separated).

  Type: string[] Default: []

  Required: false

• identifier_names_cache_path

  The existing .json file that will be used to read and write identifier names cache.

  If a path to the empty file will be passed - identifier names cache will be written to that file.

  Type: string Default: ``

  Required: false

• identifier_names_generator

  Sets identifier names generator.

  Type: string Default: hexadecimal

  Available values:

  • dictionary: identifier names from identifiers_dictionary list
  • hexadecimal: identifier names like _0xabc123
  • mangled: short identifier names like a, b, c
  • mangled-shuffled: same as mangled but with shuffled alphabet

  Required: false

• identifiers_dictionary

  Sets identifiers dictionary for identifier_names_generator: dictionary option. Each identifier from the dictionary will be used in a few variants with a different casing of each character. Thus, the number of identifiers in the dictionary should depend on the identifiers amount at original source code.

  Type: string[] Default: []

  Required: false

• identifiers_prefix

  Sets prefix for all global identifiers.

  Type: string Default: ``

  Required: false

• ignore_imports

  Prevents obfuscation of require and dynamic imports'.

  Type: boolean Default: false

  Required: false

• log

  Enables logging of the information to the console.

  Type: boolean Default: false

  Required: false

• numbers_to_expressions

  Enables numbers conversion to expressions.

  Type: boolean Default: false

  Required: false

• options_preset

  Allows to set options preset.

  Type: string Default: default

  Available values:

  • default
  • low-obfuscation
  • medium-obfuscation
  • high-obfuscation

  All addition options will be merged with selected options preset.

  Required: false

• rename_globals

  Allows to enable obfuscation of global variable and function names with declaration

  Type: boolean Default: false

  Required: false

• rename_properties_mode

  Specify rename_properties option mode.

  Type: string Default: save

  Available values:

  • safe
  • unsafe

  Required: false

• reserved_names

  Disables obfuscation and generation of identifiers, which being matched by passed RegExp patterns (comma separated).

  Type: string[] Default: []

  Required: false

• reserved_strings

  Disables transformation of string literals, which being matched by passed RegExp patterns.

  Type: string[] Default: []

  Required: false

• seed

  Sets seed for random generator. This is useful for creating repeatable results.

  Type: string|number Default: 0

  Required: false

• self_defending

  Disables self-defending for obfuscated code.

  Type: boolean Default: false

  Required: false

• simplify

  Enables additional code obfuscation through simplification.

  Type: boolean Default: true

  Required: false

• source_map

  Enables source map generation for obfuscated code.

  Type: boolean Default: true

  Source maps can be useful to help you debug your obfuscated JavaScript source code. If you want or need to debug in production, you can upload the separate source map file to a secret location and then point your browser there.

  Required: false

• source_map_base_url

  Sets base url to the source map import url when source_map_mode: separate.

  Type: string Default: ``

  Required: false

• source_map_file_name

  Sets file name for output source map when source_map_mode: separate.

  Type: string Default: ``

  Required: false

• source_map_mode

  Specify source map output mode.

  Type: string Default: separate

  Available values:

  • inline
  • separate

  Required: false

• source_map_sources_mode

  Specify source map sources mode.

  Type: string Default: sources-content

  Available values:

  • sources-content
  • sources

  Required: false

• split_strings

  Splits literal strings into chunks with length of split_strings_chunk_length option value.

  Type: boolean Default: false

  Required: false

• split_strings_chunk_length

  Sets chunk length of split_strings option.

  Type: number Default: 10

  Required: false

• string_array

  Enables gathering of all literal strings into an array and replacing every literal string with an array call.

  Type: boolean Default: true

  Removes string literals and place them in a special array. For instance, the string "Hello World" in var m = "Hello World"; will be replaced with something like var m = _0x12c456[0x1];.

  Required: false

• string_array_calls_transform

  Enables the transformation of calls to the string_array.

  Type: boolean Default: false

  All arguments of these calls may be extracted to a different object depending on string_array_calls_transform_threshold value. So it makes it even harder to automatically find calls to the string array.

  Required: false

• string_array_calls_transform_threshold

  The probability that that calls to the string array will be transformed.

  Type: number Default: 0.5

  Required: false

• string_array_encoding

  Encodes each string in strings array using base64 or rc4 (this option can slow down your code speed).

  Type: string[] Default: []

  Available values:

  • none
  • base64
  • rc4

  Required: false

• string_array_indexes_type

  Allows to control the type of string array call indexes.

  Type: string[] Default: ['hexadecimal-number']

  Each string_array call index will be transformed by the randomly picked type from the passed list. This makes possible to use multiple types.

  Available values:

  • hexadecimal-number
  • hexadecimal-numeric-string

  Required: false

• string_array_index_shift

  Enables additional index shift for all string array calls.

  Type: boolean Default: true

  Required: false

• string_array_rotate

  Shift the string_array array by a fixed and random (generated at the code obfuscation) places. This makes it harder to match the order of the removed strings to their original place.

  Type: boolean Default: true

  Required: false

• string_array_shuffle

  Randomly shuffles the string_array array items.

  Type: boolean Default: true

  Required: false

• string_array_shuffle

  Randomly shuffles the string_array array items.

  Type: boolean Default: true

  Required: false

• string_array_wrappers_count

  Sets the count of wrappers for the string_array inside each root or function scope. The actual count of wrappers inside each scope is limited by a count of literal nodes within this scope.

  Type: number Default: 1

  Required: false

• string_array_wrappers_chained_calls

  Enables the chained calls between string_array wrappers.

  Type: boolean Default: true

  Required: false

• string_array_wrappers_parameters_max_count

  Allows to control the maximum number of string array wrappers parameters. Default and minimum value is 2. Recommended value between 2 and 5.

  Type: number Default: 2

  Required: false

• string_array_wrappers_type

  Allows to select a type of the wrappers that are appending by the string_array_wrappers_count option.

  Type: string Default: variable

  Available values:

  • variable
  • function

  Required: false

• string_array_threshold

  The probability that the literal string will be inserted into string_array.

  Type: number Default: 0.8 Min: 0 Max: 1

  Required: false

• target

  Allows to set target environment for obfuscated code.

  Type: string Default: browser

  Available values:

  • browser
  • browser-no-eval
  • node

  Required: false

• transform_object_keys

  Enables transformation of object keys.

  Type: boolean Default: false

  Required: false

• unicode_escape_sequence

  Allows to enable/disable string conversion to unicode escape sequence.

  Type: boolean Default: false

  Required: false