[PNG-PHP Polyglot Shell]
File Info:
This file is a valid PNG image AND a PHP script.
- Open with image viewer: Shows valid PNG with metadata
- Rename to .php and access via web: Executes this uploader
- PHP code is hidden after the PNG IEND chunk
This file is a valid PNG image AND a PHP script.
- Open with image viewer: Shows valid PNG with metadata
- Rename to .php and access via web: Executes this uploader
- PHP code is hidden after the PNG IEND chunk
Polyglot Details:
type: PNG-PHP Polyglot
png_size: 385
php_starts: after IEND chunk
features: Image Viewer Compatible, PHP Executable, Metadata Tags
type: PNG-PHP Polyglot
png_size: 385
php_starts: after IEND chunk
features: Image Viewer Compatible, PHP Executable, Metadata Tags
PNG Preview:
The image displays because PHP ignores binary data outside tags
The image displays because PHP ignores binary data outside tags
Command Execution:
File Upload:
Uploaded Files (1):
Technical Details:
The PNG structure ends with the IEND chunk. Image viewers/renderers stop parsing there.
However, PHP reads the entire file and executes any blocks it finds.
This allows the same file to be both a valid image and executable PHP code.
The PNG structure ends with the IEND chunk. Image viewers/renderers stop parsing there.
However, PHP reads the entire file and executes any blocks it finds.
This allows the same file to be both a valid image and executable PHP code.