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Burp repeater Request editor scrambles bytes when switching between Raw and Hex

Henric | Last updated: Nov 30, 2023 10:44AM UTC

Here is a minimal test case to reproduce the problem To reproduce: 1. Open repeater tab, and focus raw Request editor 2. Insert a new line 3. Insert the following Base64 string: /w== 3. Select the base64 string (4 chars) and press Ctrl+Shift+B (Convert Selection->Base64->Base64 decode) 4. Switch to Hex editor Expected behavior: The following bytes displayed: 0d 0a ff CR LF ÿ Observed behavior: The following bytes displayed: 0d 0a c3 bf CR LF Ã ¿ Note that repeatedly switching between Raw and Hex will create new bytes with same incorrect behavior. Environment: Burp Community Edition v.2023.10.3.6 Build 24994

Michelle, PortSwigger Agent | Last updated: Nov 30, 2023 02:21PM UTC