added random proxy list and static proxy support

CHANGELOG

@@ -5,6 +5,8 @@ This is Beta release of jsunpack-network (jsunpackn) version 0.3.2c
 
 RELEASE NOTES:
 
+1) added -p (proxy) and -P (currentproxy) command line arguments (used during active fetching)
+
 Updates 2010-07-02 version 0.3.2c
 
 1) encrypted PDF handling and various PDF parsing improvements

jsunpackn.py

@@ -24,7 +24,7 @@
 from BeautifulSoup import BeautifulSoup
 import sys, os, re, time, subprocess, struct
 import StringIO, string, gzip, signal, urllib2, socket
-import ConfigParser
+import ConfigParser, random
 from optparse import OptionParser
 from hashlib import sha1
 
@@ -886,10 +886,23 @@ def fetch(self,url):
         try:
             hostname,dstport = self.hostname_from_url(url)
 
+            if self.OPTIONS.proxy and (not self.OPTIONS.currentproxy):
+                proxies = self.OPTIONS.proxy.split(',')
+                self.OPTIONS.currentproxy = proxies[random.randint(0,len(proxies)-1)]
+                if not self.OPTIONS.quiet:
+                    print '[fetch config] random proxy %s' % (self.OPTIONS.currentproxy)
+
             request = urllib2.Request('http://'+url)
             request.add_header('Referer', 'http://'+refer)
             request.add_header('User-Agent', 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0)')
-            opener = urllib2.build_opener()
+
+            if self.OPTIONS.currentproxy:
+                if not self.OPTIONS.quiet:
+                    print '[fetch config] currentproxy %s' % (self.OPTIONS.currentproxy)
+                proxyHandler = urllib2.ProxyHandler({'http': 'http://%s' % (self.OPTIONS.currentproxy) }) 
+                opener = urllib2.build_opener(proxyHandler)
+            else:
+                opener = urllib2.build_opener()
             remote = opener.open(request).read()
 
             if len(remote) > 0:
@@ -1169,6 +1182,12 @@ def main():
     parser.add_option('-a', '--active', dest='active',
         help='actively fetch URLs (only for use with pcap/file/url as input)', #default=False,
         action='store_true')
+    parser.add_option('-p', '--proxy', dest='proxy',
+        help='use a random proxy from this list (comma separated)', 
+        action='store')
+    parser.add_option('-P', '--currentproxy', dest='currentproxy',
+        help='use this proxy and ignore proxy list from --proxy',
+        action='store')
     parser.add_option('-q', '--quiet', dest='quiet',
         help='limited output to stdout', #default=False,
         action='store_true')

options.config

@@ -17,6 +17,9 @@ decoded:./decoded.log
 #log_ips:./$CURDATE-files/malicious_ips
 #decoded:./$CURDATE-files/decoded.log
 
+#### You can use a randomized proxy list or a currentProxy (ignores randomness)
+#proxy:a.b.c.d:8080,e.f.g.h:80
+#currentproxy:i.j.k.l:8000
 
 [decoding]
 #You can also override the default decoding options using the following options