elf-interp-dump

#!/usr/bin/env python3

# $ elf-interp-dump ELF-FILE
# Show the .interp string in ELF file if present
#
# $ elf-interp-dump /bin/true
#   /lib64/ld-linux-x86-64.so.2
#
# Requires pyelftools ("pip3 install --user pyselftools")

import elftools.elf.elffile
from elftools.elf.segments import InterpSegment
from elftools.common.exceptions import ELFError

import sys
import os

def program_name():
    return os.path.basename(sys.argv[0])

def print_usage_exit():
    sys.stderr.write('usage: %s ELF-FILE\n' % (program_name(),))
    sys.exit(2)

def main(args):
    try:
        (filename,) = args
    except ValueError:
        print_usage_exit()

    try:
        f = elftools.elf.elffile.ELFFile(open(filename, 'rb'))
    except ELFError:
        sys.stderr.write('"%s" is not an ELF file\n' % (filename,))
        sys.exit(2)

    for i in f.iter_segments():
        if not isinstance(i, InterpSegment):
            continue
        print(i.get_interp_name())

if __name__ == '__main__':
    main(sys.argv[1:])