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cflems/obfuscator.js

Last active December 12, 2022 10:01
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Revisions

  1. cflems revised this gist Dec 6, 2022. 1 changed file with 24 additions and 19 deletions.
    43 changes: 24 additions & 19 deletions obfuscator.js
    View file
    Original file line number Diff line number Diff line change
    @@ -1,5 +1,3 @@
    const fs = require('fs');

    const zero = '+[]'; // 1
    const one = '+!![]'; // 1
    const two = '('+ one + one +')'; // 2
    @@ -19,7 +17,7 @@ function compile_int(n) {

    for (let sh = 0; stack.length > 0; sh++) {
    const lit = parseInt(stack.pop());
    if (lit == 0) continue;
    if (lit === 0) continue;
    let tentative = int_lits[lit];
    if (sh > 0) tentative = '('+tentative+'<<'+compile_int(sh*3)+')';
    compiled.push(tentative);
    @@ -31,17 +29,6 @@ function compile_int(n) {
    return compiled;
    }

    function sanity(limit) {
    let maxlen = 0;
    for (let i = 0; i < limit; i++) {
    const compiled = compile_int(i);
    if(i !== eval(compiled)) console.log(i);
    if (compiled.length > maxlen) maxlen = compiled.length;
    }

    return maxlen;
    }

    const char_lits = {
    'N': '(+{}+[])['+compile_int(0)+']',
    'a': '(+{}+[])['+compile_int(1)+']',
    @@ -94,8 +81,8 @@ function compile_string(s, as_code = false) {
    return compiled.join('+');
    }

    // below are very long character literals that should only be used for setup
    // ~300 chars

    // these are ~300 chars, will require compression
    char_lits['p'] = '(/</['+compile_string('constructor')+']+[])['+compile_int(14)+']';
    char_lits['S'] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(9)+']';
    char_lits['g'] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(14)+']';
    @@ -106,7 +93,7 @@ char_lits['}'] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(
    char_lits['v'] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(25)+']';
    char_lits['m'] = '((+[])['+compile_string('constructor')+']+[])['+compile_int(11)+']';

    // ~800 chars
    // these are ~800 chars, will require great compression
    char_lits['h'] = '('+compile_int(17)+')['+compile_string('toString')+']('+compile_int(24)+')';
    char_lits['C'] = '((()=>{})['+compile_string('constructor')+']('+compile_string('return escape')+')()('+compile_string('\\')+'))['+compile_int(2)+']';

    @@ -116,10 +103,28 @@ function compile_code(code) {
    return prelude + '(()=>{})['+compile_string('constructor')+']('+compile_string(code, true)+')()';
    }

    if (typeof process === 'undefined')
    process = global.process;

    if (process.argv.length < 3) {
    console.log('Usage:', process.argv[0], process.argv[1], '<input file>');
    process.exit(1);
    }

    const code = fs.readFileSync(process.argv[2], {encoding: 'utf8'});
    console.log(compile_code(code));
    if (process.argv[2] === '-') {
    const data = [];
    process.stdin.on('data', function (fragment) {
    data.push(fragment);
    });
    process.stdin.on('close', function() {
    const code = Buffer.concat(data).toString();
    console.log(compile_code(code));
    });
    } else {
    if (typeof require === 'undefined')
    require = global.require || global.process.mainModule.constructor._load;
    const fs = require('fs');

    const code = fs.readFileSync(process.argv[2], {encoding: 'utf8'});
    console.log(compile_code(code));
    }
  2. cflems created this gist Jul 24, 2022.
    125 changes: 125 additions & 0 deletions obfuscator.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,125 @@
    const fs = require('fs');

    const zero = '+[]'; // 1
    const one = '+!![]'; // 1
    const two = '('+ one + one +')'; // 2
    const three = '('+ one + one + one +')'; // 3
    const four = '('+ one + one + '<<' + one +')'; // 3
    const five = '('+ four + one +')'; // 4
    const six = '('+ one + one + one + '<<' + one +')'; // 4
    const seven = '('+ six + one +')';
    const eight = '('+ one + one + '<<' + one + one +')'; // 4
    const int_lits = {0: zero, 1: one, 2: two, 3: three, 4: four, 5: five, 6: six, 7: seven, 8: eight};

    function compile_int(n) {
    if (n in int_lits) return int_lits[n];
    let compiled = [], m = n;
    if (n < 0) m = -n;
    const stack = m.toString(8).split('');

    for (let sh = 0; stack.length > 0; sh++) {
    const lit = parseInt(stack.pop());
    if (lit == 0) continue;
    let tentative = int_lits[lit];
    if (sh > 0) tentative = '('+tentative+'<<'+compile_int(sh*3)+')';
    compiled.push(tentative);
    }

    compiled = '('+compiled.join('|')+')';
    if (n < 0) compiled = '-'+compiled;
    int_lits[n] = compiled;
    return compiled;
    }

    function sanity(limit) {
    let maxlen = 0;
    for (let i = 0; i < limit; i++) {
    const compiled = compile_int(i);
    if(i !== eval(compiled)) console.log(i);
    if (compiled.length > maxlen) maxlen = compiled.length;
    }

    return maxlen;
    }

    const char_lits = {
    'N': '(+{}+[])['+compile_int(0)+']',
    'a': '(+{}+[])['+compile_int(1)+']',
    // N
    '[': '({}+[])['+compile_int(0)+']',
    'o': '({}+[])['+compile_int(1)+']',
    'b': '({}+[])['+compile_int(2)+']',
    'j': '({}+[])['+compile_int(3)+']',
    // e
    'c': '({}+[])['+compile_int(5)+']',
    // t
    ' ': '({}+[])['+compile_int(7)+']',
    'O': '({}+[])['+compile_int(8)+']',
    // bject
    ']': '({}+[])['+compile_int(14)+']',
    'f': '(![]+[])['+compile_int(0)+']',
    // a
    'l': '(![]+[])['+compile_int(2)+']',
    's': '(![]+[])['+compile_int(3)+']',
    // e
    't': '(!![]+[])['+compile_int(0)+']',
    'r': '(!![]+[])['+compile_int(1)+']',
    'u': '(!![]+[])['+compile_int(2)+']',
    'e': '(!![]+[])['+compile_int(3)+']',
    '\/': '(/\\\\/+[])['+compile_int(0)+']',
    '\\': '(/\\\\/+[])['+compile_int(1)+']',
    'I': '((+!![]/+[])+[])['+compile_int(0)+']',
    'n': '((+!![]/+[])+[])['+compile_int(1)+']',
    // f
    'i': '((+!![]/+[])+[])['+compile_int(3)+']',
    // nit
    'y': '((+!![]/+[])+[])['+compile_int(7)+']',
    //un
    'd': '([]['+compile_int(0)+']+[])['+compile_int(2)+']',
    // efined
    };
    // wanted: m C h in relatively short fashion

    function compile_string(s, as_code = false) {
    const compiled = [];

    for (const c of s) {
    const req = '$('+compile_int(c.charCodeAt(0))+')';
    if (c in char_lits && (char_lits[c].length <= req.length || !as_code))
    compiled.push(char_lits[c]);
    else
    compiled.push(req);
    }

    return compiled.join('+');
    }

    // below are very long character literals that should only be used for setup
    // ~300 chars
    char_lits['p'] = '(/</['+compile_string('constructor')+']+[])['+compile_int(14)+']';
    char_lits['S'] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(9)+']';
    char_lits['g'] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(14)+']';
    char_lits['('] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(15)+']';
    char_lits[')'] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(16)+']';
    char_lits['{'] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(18)+']';
    char_lits['}'] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(34)+']';
    char_lits['v'] = '([]+([]+[])['+compile_string('constructor')+'])['+compile_int(25)+']';
    char_lits['m'] = '((+[])['+compile_string('constructor')+']+[])['+compile_int(11)+']';

    // ~800 chars
    char_lits['h'] = '('+compile_int(17)+')['+compile_string('toString')+']('+compile_int(24)+')';
    char_lits['C'] = '((()=>{})['+compile_string('constructor')+']('+compile_string('return escape')+')()('+compile_string('\\')+'))['+compile_int(2)+']';

    const prelude = '$=([]+[])['+compile_string('constructor')+']['+compile_string('fromCharCode')+'];';

    function compile_code(code) {
    return prelude + '(()=>{})['+compile_string('constructor')+']('+compile_string(code, true)+')()';
    }

    if (process.argv.length < 3) {
    console.log('Usage:', process.argv[0], process.argv[1], '<input file>');
    process.exit(1);
    }

    const code = fs.readFileSync(process.argv[2], {encoding: 'utf8'});
    console.log(compile_code(code));