Deobfuscate

Make obfuscated JavaScript code more readable.

Status

Currently the deobfuscation doesn't prioritize one step
over another, however this will change in the future.

Steps

Implemented deobfuscation steps.

• Combined Expressions

  expression && expression

  if(expression)
      expression

  
  

• Double Knot

  !! expression

  Boolean(expression)

  
  

• Interjoined Assignments

  (a = {}).b = 1

  a = {} ;
  b = 1 ;

  
  

• Joined Variables

  let a = 1 ,
      b = 2 ;

  let a = 1 ;
  let b = 2 ;

  
  

• Literal Garbage

  0;

  
  

• Non-constant

  var a = 1;

  const a = 1;

  
  

• Noop

  ;

  
  

• Number Logic

  !0 !1

  true false

  
  

• Property Twins

  const object = {
      property : property
  }

  const object = {
      property
  }

  
  

• Readable Variables

  const a;

  const __thing_234

  
  

• Secondhand Call

  (method)(a,b,c)

  method(a,b,c)

  
  

• Sequenced Expressions

  ( expression , expression )

  expression;
  expression;

  
  

• Sequence Literals

  (0,a,0,b,0)

  (a,b,0)

  
  

• Stringed Indexing

  object['key']

  object.key

  
  

• Twin Declaration

  const w = window;

  
  

• Unreachable Conditions

  if(false)
      ;

  
  

• Useless Constants

  const a;

  
  

• Void Literal

  void 0

  undefined