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file-upload

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Arbitrary file upload exploitation — webshell upload, extension bypass, content-type manipulation, and upload-to-RCE techniques.

packages/decepticon/decepticon/skills/standard/exploit/web/file-upload/SKILL.md

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# Arbitrary File Upload Exploitation

Exploits insufficient file upload validation to upload executable files (webshells) achieving RCE on the target server. Common in image/document upload features, profile picture handlers, and file import endpoints.

## Discovery
```bash
# Find upload endpoints
curl -s 'http://<TARGET>/' | grep -i 'upload\|file\|enctype="multipart\|type="file"'
curl -s 'http://<TARGET>/upload'
curl -s 'http://<TARGET>/api/upload'

# Check for upload directory listing
curl -s 'http://<TARGET>/uploads/'
curl -s 'http://<TARGET>/static/'