reverse-skills-max: initial public release (restored, redacted, hardened)

vendor-new/malware-analysis-claude-skills/malware-triage/scripts/hash_calculator.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+"""
+Quick hash calculator for malware samples.
+Calculates MD5, SHA1, and SHA256 hashes simultaneously.
+"""
+
+import hashlib
+import sys
+from pathlib import Path
+
+
+def calculate_hashes(file_path):
+    """
+    Calculate MD5, SHA1, and SHA256 hashes for a file.
+    
+    Args:
+        file_path: Path to the file
+        
+    Returns:
+        dict: Dictionary containing all three hashes
+    """
+    md5 = hashlib.md5()
+    sha1 = hashlib.sha1()
+    sha256 = hashlib.sha256()
+    
+    try:
+        with open(file_path, 'rb') as f:
+            # Read in chunks for memory efficiency
+            while chunk := f.read(8192):
+                md5.update(chunk)
+                sha1.update(chunk)
+                sha256.update(chunk)
+
+        return {
+            'md5': md5.hexdigest(),
+            'sha1': sha1.hexdigest(),
+            'sha256': sha256.hexdigest()
+        }
+    except (FileNotFoundError, PermissionError, IsADirectoryError, OSError) as e:
+        return {'error': str(e)}
+
+
+def main():
+    if len(sys.argv) < 2:
+        print("Usage: python hash_calculator.py <file_path>")
+        sys.exit(1)
+    
+    file_path = Path(sys.argv[1])
+    
+    if not file_path.exists():
+        print(f"Error: File '{file_path}' not found")
+        sys.exit(1)
+    
+    if not file_path.is_file():
+        print(f"Error: '{file_path}' is not a file")
+        sys.exit(1)
+    
+    print(f"Calculating hashes for: {file_path}")
+    print(f"File size: {file_path.stat().st_size} bytes")
+    print("-" * 70)
+    
+    hashes = calculate_hashes(file_path)
+    
+    if 'error' in hashes:
+        print(f"Error calculating hashes: {hashes['error']}")
+        sys.exit(1)
+    
+    print(f"MD5:    {hashes['md5']}")
+    print(f"SHA1:   {hashes['sha1']}")
+    print(f"SHA256: {hashes['sha256']}")
+
+
+if __name__ == "__main__":
+    main()