Module refinery.units.obfuscation.js.getattr

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from __future__ import annotations

import re

from refinery.lib.patterns import formats
from refinery.units.obfuscation import Deobfuscator, StringLiterals


class deob_js_getattr(Deobfuscator):
    """
    JavaScript deobfuscator to turn `WScript["CreateObject"]` into `WScript.CreateObject`.
    """

    def deobfuscate(self, data):
        strlit = StringLiterals(formats.string, data)

        @strlit.outside
        def dottify(match: re.Match[str]):
            name = match[2][1:-1]
            if name.isidentifier():
                return F'{match[1]}.{name}'
            return match[0]

        return re.sub(FR'(\w+)\[({formats.string})\]', dottify, data)

Classes

class deob_js_getattr

JavaScript deobfuscator to turn WScript["CreateObject"] into WScript.CreateObject.

Expand source code Browse git 
class deob_js_getattr(Deobfuscator):
    """
    JavaScript deobfuscator to turn `WScript["CreateObject"]` into `WScript.CreateObject`.
    """

    def deobfuscate(self, data):
        strlit = StringLiterals(formats.string, data)

        @strlit.outside
        def dottify(match: re.Match[str]):
            name = match[2][1:-1]
            if name.isidentifier():
                return F'{match[1]}.{name}'
            return match[0]

        return re.sub(FR'(\w+)\[({formats.string})\]', dottify, data)

Ancestors

Subclasses

Class variables

var required_dependencies
var optional_dependencies
var console
var reverse

Methods

def deobfuscate(self, data)
Expand source code Browse git 
def deobfuscate(self, data):
    strlit = StringLiterals(formats.string, data)

    @strlit.outside
    def dottify(match: re.Match[str]):
        name = match[2][1:-1]
        if name.isidentifier():
            return F'{match[1]}.{name}'
        return match[0]

    return re.sub(FR'(\w+)\[({formats.string})\]', dottify, data)

Inherited members