JavaScript obfuscation transforms readable source code into a format that is difficult for humans to understand while remaining executable by browsers. Techniques include:
JavaScript is a popular programming language used for client-side scripting on the web. However, to protect their code from theft or reverse engineering, developers often obfuscate or pack their JavaScript code. Obfuscation makes the code difficult to understand, while packing compresses the code to make it harder to analyze.
JavaScript obfuscation is the process of transforming readable JavaScript code into a cryptic and unreadable format. This is done to protect the code from being reverse-engineered, modified, or stolen. Obfuscation techniques include:
| Metric | JSDeob-Port | de4js | jsnice | |----------------------------|-------------|-------|--------| | Unpacking success (nested) | 94.2% | 61.5% | 72.3% | | Semantic accuracy | 91.7% | 83.2% | 79.4% | | False positive rate | 2.1% | 8.4% | 5.7% | | Avg time per sample (ms) | 127 | 340 | 890 |
