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https://github.com/0xdade/HackerStuff.git
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69 lines
2.1 KiB
Python
69 lines
2.1 KiB
Python
#!/usr/bin/env python
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'''
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File: dnssec-walker.py
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Author: @0xdade
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Description: Simple DNSSEC record walker. Crawls NSEC records of a target domain.
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License: WTFPL (http://www.wtfpl.net/)
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Requires:
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- pip install dnspython
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'''
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import dns.resolver
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import dns.rdatatype
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import dns.query
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import sys
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def main():
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targetDomain = sys.argv[1] # pass in a target domain to walk
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# If the provided domain doesn't end with a '.', add one so that we can compare against the actual DNS records
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if not targetDomain.endswith('.'):
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targetDomain+='.'
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#print("Target Domain: %s" % targetDomain)
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# we set nextDomain so that we can loop starting at the beginning
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nextDomain = targetDomain
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resolv = dns.resolver.Resolver()
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# Get and then set the authoritative nameservers
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nsnames = resolv.query(targetDomain, dns.rdatatype.NS).rrset
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nsaddrs = []
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for name in nsnames:
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# take the first A record for the name and append it to our nameserver list
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nsaddrs.append(resolv.query(str(name), dns.rdatatype.A).rrset[0].to_text())
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resolv.nameservers = nsaddrs
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while nextDomain:
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outstr = str(nextDomain)[:-1] + " "
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try:
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arec = resolv.query(nextDomain, 'A')
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for rdata in arec:
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outstr += str(rdata) + ","
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except dns.resolver.NoAnswer:
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pass
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except dns.resolver.NXDOMAIN:
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pass
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except Exception as e:
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raise
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print(outstr[:-1])
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try:
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ans = resolv.query(nextDomain, 'NSEC')
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for item in ans.response.answer:
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for sub in item:
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# since it's a cyclical list, stop when we reach the beginning
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if str(sub.next) != targetDomain:
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#print(sub.next)
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nextDomain = sub.next
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else:
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return
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except dns.resolver.NoAnswer:
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pass
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except dns.resolver.NXDOMAIN:
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pass
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except Exception as e:
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raise
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if __name__ == '__main__':
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main()
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