41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
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#!/usr/bin/env python
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# Requires Python >= 3.2 or >= 2.7
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# This is part of Luma3DS
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__author__ = "TuxSH"
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__copyright__ = "Copyright (c) 2016 TuxSH"
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__license__ = "GPLv3"
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__version__ = "v1.0"
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import argparse
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description="Changes the path to Luma3DS for reboot patches")
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parser.add_argument("payload", help="Path to the Luma3DS payload")
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parser.add_argument("new_path", help="New Luma3DS payload path")
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args = parser.parse_args()
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data = b""
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if len(args.new_path) > 37:
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raise SystemExit("The new payload path is too large (37 characters max.)")
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with open(args.payload, "rb") as f: data = bytearray(f.read())
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if len(data) == 0: raise SystemExit("Could not read {0}".format(args.payload))
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if len(data) > 0x20000:
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raise SystemExit("The input file is too large, are you sure you're using a Luma3DS payload?")
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found_index = data.find("sdmc:/".encode("utf-16-le"))
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if found_index == -1:
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raise SystemExit("The pattern was not found, are you sure you're usinga a Luma3DS payload?")
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namebuf = args.new_path.encode("utf-16-le")
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namebuf += b'\x00' * (74 - len(namebuf))
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data[found_index + 12 : found_index + 12 + 74] = namebuf
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with open(args.payload, "wb+") as f: f.write(data)
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