[MACOS][Yosemite] python import scapy, No module named dumbnet error

因為工作需要要用到一個blacknurse的python script，但是發現macos上執行遇到No module named dumbnet的error，網路上的解法眾說紛紜，所以記錄一下後來成功的過程。

1. No module named dumbnet

一開始遇到的error，是因為from scapy.all import * ，然後找不到dumbnet可以import

Traceback (most recent call last):
  File "exploit.py", line 8, in <module>
    from scapy.all import *
  File "/usr/local/lib/python2.7/site-packages/scapy/all.py", line 16, in <module>
    from scapy.arch import *
  File "/usr/local/lib/python2.7/site-packages/scapy/arch/__init__.py", line 79, in <module>
    from scapy.arch.pcapdnet import *
  File "/usr/local/lib/python2.7/site-packages/scapy/arch/pcapdnet.py", line 471, in <module>
    import dumbnet as dnet
ImportError: No module named dumbnet

所以找到網路上的方法安裝libdnet install libdnet from source，

安裝libdnet

cd
git clone https://github.com/dugsong/libdnet.git
cd libdnet
./configure && make
cd python
python setup.py install

裝完之後發現還是一樣的error，但是python package路徑，/usr/local/lib/python2.7/site-packages內已經有dnet，但是error message是找不到dumbnet

如果將最後error的pcapdnet.py打開來看，發現他是先import dnet，出現error才import dumbnet，所以實際上是import dnet有error

if conf.use_dnet:
    try:
        try:
            # First try to import dnet
            import dnet
        except ImportError:
            # Then, try to import dumbnet as dnet
            import dumbnet as dnet
    except ImportError,e:
        if conf.interactive:
            log_loading.error("Unable to import dnet module: %s" % e)
            conf.use_dnet = False

打開python interactive mode，然後import dnet，看是什麼error

2. No module named graphillion

>>> import dnet
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/site-packages/dnet/__init__.py", line 28, in <module>
    from dnet.network import Network
  File "/usr/local/lib/python2.7/site-packages/dnet/network.py", line 23, in <module>
    from dnet.configset import ConfigSet
  File "/usr/local/lib/python2.7/site-packages/dnet/configset.py", line 23, in <module>
    from graphillion import GraphSet
ImportError: No module named graphillion

所以用pip安裝 pip install graphillion

結果又出現error

3. No module named networkx

>>> import dnet;
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/site-packages/dnet/__init__.py", line 28, in <module>
    from dnet.network import Network
  File "/usr/local/lib/python2.7/site-packages/dnet/network.py", line 29, in <module>
    import networkx as nx
ImportError: No module named networkx

再用pip安裝

pip install networkx

4. AttributeError: ‘module’ object has no attribute ‘intf’

安裝完之後，用python interactive mode已經可以import dnet了，再回過頭來執行程式，又出現error

Traceback (most recent call last):
  File "exploit.py", line 8, in <module>
    from scapy.all import *
  File "/usr/local/lib/python2.7/site-packages/scapy/all.py", line 25, in <module>
    from scapy.route import *
  File "/usr/local/lib/python2.7/site-packages/scapy/route.py", line 163, in <module>
    conf.route=Route()
  File "/usr/local/lib/python2.7/site-packages/scapy/route.py", line 22, in __init__
    self.resync()
  File "/usr/local/lib/python2.7/site-packages/scapy/route.py", line 31, in resync
    self.routes = read_routes()
  File "/usr/local/lib/python2.7/site-packages/scapy/arch/unix.py", line 102, in read_routes
    ifaddr = scapy.arch.get_if_addr(netif)
  File "/usr/local/lib/python2.7/site-packages/scapy/arch/__init__.py", line 48, in get_if_addr
    return socket.inet_ntoa(get_if_raw_addr(iff))
  File "/usr/local/lib/python2.7/site-packages/scapy/arch/pcapdnet.py", line 518, in get_if_raw_addr
    i = dnet.intf()
AttributeError: 'module' object has no attribute 'intf'

找到下面這篇 Scapy Fails with AttributeError: ‘module’ object has no attribute ‘intf’

只要移除pydnet

pip uninstall pydnet

做了這些步驟之後總算可以正確執行了。

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