chore: add multisend parser to scripts directory

script/utils/multisend_tx_parser.py

@@ -0,0 +1,70 @@
+import sys
+import binascii
+
+def parse_multisend_transactions(tx_bytes: bytes):
+    i = 0
+    txs = []
+
+    while i < len(tx_bytes):
+        if i + 1 + 20 + 32 + 32 > len(tx_bytes):
+            raise ValueError(f"Not enough data for header at offset {i}")
+
+        operation = tx_bytes[i]
+        if operation != 0:
+            raise ValueError(f"Invalid operation at offset {i}: expected 0, got {operation}")
+        i += 1
+
+        to = tx_bytes[i:i+20]
+        i += 20
+
+        value = int.from_bytes(tx_bytes[i:i+32], byteorder='big')
+        i += 32
+
+        data_length = int.from_bytes(tx_bytes[i:i+32], byteorder='big')
+        i += 32
+
+        if i + data_length > len(tx_bytes):
+            raise ValueError(f"Not enough data for transaction data at offset {i}")
+
+        data = tx_bytes[i:i+data_length]
+        i += data_length
+
+        txs.append({
+            'operation': operation,
+            'to': '0x' + to.hex(),
+            'value': value,
+            'data_length': data_length,
+            'data': '0x' + data.hex()
+        })
+
+    return txs
+
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        print(f"Usage: {sys.argv[0]} <0x-prefixed hex string>")
+        sys.exit(1)
+
+    hex_input = sys.argv[1]
+    if hex_input.startswith("0x"):
+        hex_input = hex_input[2:]
+
+    try:
+        tx_bytes = binascii.unhexlify(hex_input)
+    except binascii.Error:
+        print("Invalid hex string.")
+        sys.exit(1)
+
+    try:
+        transactions = parse_multisend_transactions(tx_bytes)
+    except Exception as e:
+        print(f"Error parsing transactions: {e}")
+        sys.exit(1)
+
+    for idx, tx in enumerate(transactions):
+        print(f"Transaction {idx + 1}:")
+        print(f"  operation: {tx['operation']}")
+        print(f"  to: {tx['to']}")
+        print(f"  value: {tx['value']}")
+        print(f"  data_length: {tx['data_length']}")
+        print(f"  data: {tx['data']}")