33 lines
835 B
Python
33 lines
835 B
Python
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#!/usr/bin/env python
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# Script to remove EXEC flag from an ELF file
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#
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# Copyright (C) 2020 Kevin O'Connor <kevin@koconnor.net>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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import optparse
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FLAG_OFFSET = 16
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def main():
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# Parse command-line arguments
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usage = "%prog <input_file> <output_file>"
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opts = optparse.OptionParser(usage)
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options, args = opts.parse_args()
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if len(args) != 2:
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opts.error("Incorrect number of arguments")
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infilename, outfilename = args
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# Read input
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f = open(infilename, "rb")
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srcdata = f.read()
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f.close()
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# Update
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outdata = bytearray(srcdata)
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outdata[FLAG_OFFSET] = 0x01 # change ET_EXEC to ET_REL
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# Write output
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f = open(outfilename, "wb")
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f.write(outdata)
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f.close()
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if __name__ == '__main__':
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main()
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