All files / webpack:/src/node-obfuscators ObjectExpressionObfuscator.ts

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
 
1x
 
 
 
 
 
 
 
 
 
2x
 
 
 
 
 
 
 
 
 
 
 
 
 
4x
 
 
 
 
 
 
 
 
 
 
 
 
1x
 
1x
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
import * as escodegen from 'escodegen';
import * as estraverse from 'estraverse';I
 
import { IIdentifierNode } from "../interfaces/nodes/IIdentifierNode";
import { ILiteralNode } from "../interfaces/nodes/ILiteralNode";
import { IObjectExpressionNode } from "../interfaces/nodes/IObjectExpressionNode";
import { IPropertyNode } from "../interfaces/nodes/IPropertyNode";
import { INode } from "../interfaces/nodes/INode";
 
import { NodeType } from "../enums/NodeType";
 
import { NodeObfuscator } from './NodeObfuscator';I
import { Nodes } from "../Nodes";
import { Utils } from '../Utils';
 
/**
 * replaces:
 *     var object = { 'PSEUDO': 1 };
 *
 * or:
 *     var object = { PSEUDO: 1 };
 *
 * on:
 *     var object = { '\u0050\u0053\u0045\u0055\u0044\u004f': 1 };
 */
export class ObjectExpressionObfuscator extends NodeObfuscator {
    /**
     * @param objectExpressionNode
     */
    public obfuscateNode (objectExpressionNode: IObjectExpressionNode): void {
        objectExpressionNode.properties
            .forEach((property: IPropertyNode) => {
                estraverse.replace(property.key, {
                    leave: (node: INode, parentNode: INode): any => {
                        if (Nodes.isLiteralNode(node)) {
                            this.obfuscateLiteralPropertyKey(node);
 
                            return;
                        }
 
                        if (Nodes.isIdentifierNode(node)) {
                            this.obfuscateIdentifierPropertyKey(node);
                        }
                    }
                });
            });
    }
 
    /**
     * @param node
     */
    private obfuscateLiteralPropertyKey (node: ILiteralNode): void {
        switch (typeof node.value) {
            case 'string':
                if (node['x-verbatim-property']) {
                    break;
                }
 
                node['x-verbatim-property'] = {
                    content : Utils.stringToUnicode(<string>node.value),
                    precedence: escodegen.Precedence.Primary
                };
 
                break;
 
            default:
                break;
        }
    }
 
    /**
     * @param node
     */
    private obfuscateIdentifierPropertyKey (node: IIdentifierNode): void {
        let nodeValue: string = node.name,
            literalNode: ILiteralNode = {
                raw: `'${nodeValue}'`,
                'x-verbatim-property': {
                    content : Utils.stringToUnicode(nodeValue),
                    precedence: escodegen.Precedence.Primary
                },
                type: NodeType.Literal,
                value: nodeValue
            };
 
        delete node.name;
 
        Object.assign(node, literalNode);
    }
}
 
 
 
// WEBPACK FOOTER //
// ./src/node-obfuscators/ObjectExpressionObfuscator.ts