Fileupload Gunner Project Hot

This component handles chunking and progress for the fileupload gunner project hot spec.

// GunnerUploader.jsx
import React,  useState  from 'react';
import axios from 'axios';
import  uploadInChunks  from './chunkUploader'; // Custom chunking logic
const GunnerUploader = () => 
const [progress, setProgress] = useState(0);
const [isHot, setIsHot] = useState(false); // "Hot" = actively uploading
const handleFileUpload = async (file) => 
setIsHot(true);
// 1. Get signed URL from backend (the "Gunner" handshake)
const  data:  uploadUrl, fileId   = await axios.post('/api/gunner/request-upload', 
  filename: file.name,
  filetype: file.type,
  projectId: 'GUNNER-01'
);
// 2. Upload directly to S3 with progress tracking
const config = 
  onUploadProgress: (progressEvent) => 
    const percent = Math.round((progressEvent.loaded * 100) / progressEvent.total);
    setProgress(percent);
    // Hot notification for debugging
    if (percent === 100) console.log(`Gunner project hot file $fileId complete.`);
  ,
  headers:  'Content-Type': file.type 
;
// 3. Direct PUT to the presigned URL
await axios.put(uploadUrl, file, config);
// 4. Notify your backend that the file is ready for hot processing
await axios.post('/api/gunner/confirm-upload',  fileId, key: fileId );
setIsHot(false);
alert(`Hot file $file.name loaded into Gunner project.`);

;
return (
<div className="gunner-hot-zone">
<h2>🔥 Gunner Project Hot Upload 🔥</h2>
<input type="file" onChange=(e) => handleFileUpload(e.target.files[0]) />
isHot && (
<div className="progress-bar">
<div style= width: $progress%  className="fill" />
<span>progress% - Maintaining thermal velocity...</span>
</div>
)
</div>
);
;
export default GunnerUploader;

No single control suffices. A secure file upload requires a layered architecture:

| Layer | Control | Example | |-------|---------|---------| | 1. Boundary | Whitelist allowed extensions & MIME types | Only .jpg, .png – reject everything else | | 2. Content Validation | Sanitize using a secure library (e.g., fileinfo + image re-encoding) | Strip all non-image data; re-save image | | 3. Storage | Store files outside webroot; serve via handler script | uploads/ → /var/data/ + download.php?id=123 | | 4. Naming | Generate random, unguessable filenames | a1b2c3d4.pdf instead of invoice.pdf | | 5. Scanning | Anti-malware (ClamAV), YARA rules, or sandbox execution | Block known webshell signatures | | 6. Integrity | Set Content-Disposition: attachment & X-Content-Type-Options: nosniff | Prevent HTML rendering of uploaded .svg or .html |

A file upload feature is considered “hot” for three reasons: fileupload gunner project hot

A “gunner” does not simply test a single file type; they systematically probe every validation layer. Their methodology includes:

Modern WAFs and antivirus scanners can detect simple shells. The Gunner approach uses polyglot files (e.g., a PDF that is also a valid PHP web shell, or a GIF with embedded JS) to slip past both frontend and backend validation.

A full Gunner project test looks like this: This component handles chunking and progress for the

| Phase | Action | |-------|--------| | Recon | Identify all upload endpoints (profile pics, docs, support tickets, backup uploads) | | Fuzzing | Send 500+ file extensions & MIME types | | Bypass | Try double extensions (shell.php.jpg), null bytes (shell.php%00.jpg), case manipulation (shell.PhP) | | Content spoofing | Magic bytes + malicious code | | Race condition | Upload and access before validation | | Chaining | Combine upload with LFI, XSS, SSRF |