Create Python script to collect nonces for specific sectors

collect_nonces.py

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+import sys
+import subprocess
+import time
+import json
+import requests
+import random
+
+
+def collect_nonces(target_key_names):
+    uid = None
+    while uid is None:
+        output = subprocess.check_output(
+            "nfc-list", shell=True).decode('utf-8')
+        for line in output.split('\n'):
+            if 'UID (NFCID1):' in line:
+                uid = line.split(':')[1].strip().replace(' ', '')
+                break
+        if uid is None:
+            print(output)
+            time.sleep(1)
+
+    print(f"Call API for getting known keys of {uid}...")
+    response = requests.get(f'https://holycard.pinlin.me/card/{uid}')
+    if response.status_code == 404:
+        raise Exception("Card not found")
+    card = json.loads(response.text)
+
+    key_names = set(target_key_names)
+    for sector in card['sectors']:
+        index = sector['index']
+        if sector['keyA'] is not None and f'{index}A' in key_names:
+            key_names.remove(f'{index}A')
+        if sector['keyB'] is not None and f'{index}B' in key_names:
+            key_names.remove(f'{index}B')
+
+    print("Collect nonces for these keys:", list(key_names))
+    known_sector = random.choice(card['sectors'])
+    known_block_index = int(known_sector['index']) * 4
+    known_block_key_type = 'A' if known_sector['keyA'] is not None else 'B'
+    known_block_key = known_sector['keyA'] if known_block_key_type == 'A' else known_sector['keyB']
+
+    executed_key_names = []
+    for key_name in key_names:
+        block_index = int(key_name[:-1]) * 4
+        block_key_type = key_name[-1]
+        cmd = f'crypto1_bs/holycard_collect {known_block_key} {known_block_index} {known_block_key_type} {block_index} {block_key_type}'
+        proc = subprocess.Popen(
+            cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, bufsize=1, universal_newlines=True)
+        for line in proc.stdout:
+            print(line, end='')
+        for line in proc.stderr:
+            print(line, end='', file=sys.stderr)
+        print()
+        executed_key_names.append(key_name)
+
+    return executed_key_names
+
+
+if __name__ == '__main__':
+    executed_key_names = collect_nonces(['2A', '7A', '8A', '11A'])
+    print(f"Executed key_names: {list(executed_key_names)}")

requirements.txt

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+requests