def __init__(self):
self.allowed = [
"php",
"html",
"htm",
"xml",
"xhtml",
"xht",
"xhtm",
"asp",
"aspx",
"php3",
"php4",
"php5",
"txt",
"shtm",
"shtml",
"phtm",
"phtml",
"jhtml",
"pl",
"jsp",
"cfm",
"cfml",
"py",
]
self.http = HttpClient()
self.independant_payloads = loadPayloads(self.CONFIG_DIR + "/" + self.CONFIG_FILE)
class mod_xss:
"""
This class implements a cross site scripting attack
"""
def __init__(self):
self.allowed = [
"php",
"html",
"htm",
"xml",
"xhtml",
"xht",
"xhtm",
"asp",
"aspx",
"php3",
"php4",
"php5",
"txt",
"shtm",
"shtml",
"phtm",
"phtml",
"jhtml",
"pl",
"jsp",
"cfm",
"cfml",
"py",
]
self.http = HttpClient()
self.independant_payloads = loadPayloads(self.CONFIG_DIR + "/" + self.CONFIG_FILE)
def attackGET(self, page, dict, headers={}):
"""This method performs the cross site scripting attack (XSS attack) with method GET"""
if dict == {}:
if not headers.has_key("content-type"):
if (page.split(".")[-1] not in self.allowed) and page[-1] != "/":
return
elif headers["content-type"].find("text") == -1:
return
url = page + "?__XSS__"
code = "".join([random.choice("0123456789abcdefghjijklmnopqrstuvwxyz") for i in range(0, 10)])
url = page + "?" + code
data = self.http.send(url).getPage()
if data.find(code) >= 0:
payloads = self.generate_payloads(data, code)
if payloads != []:
self.findXSS(page, {}, "", code, "", payloads, headers["link_encoding"])
def study(self, obj, parent=None, keyword="", entries=[]):
if str(obj).find(keyword) >= 0:
if isinstance(obj, BeautifulSoup.Tag):
if str(obj.attrs).find(keyword) >= 0:
for k, v in obj.attrs:
if v.find(keyword) >= 0:
entries.append({"type": "attrval", "name": k, "tag": obj.name})
if k.find(keyword) >= 0:
entries.append({"type": "attrname", "name": k, "tag": obj.name})
elif obj.name.find(keyword) >= 0:
entries.append({"type": "tag", "value": obj.name})
else:
for x in obj.contents:
self.study(x, obj, keyword, entries)
elif isinstance(obj, BeautifulSoup.NavigableString):
if str(obj).find(keyword) >= 0:
entries.append({"type": "text", "parent": parent.name})
def generate_payloads(self, data, code):
headers = {"Accept": "text/plain"}
soup = BeautifulSoup.BeautifulSoup(data)
e = []
self.study(soup, keyword=code, entries=e)
payloads = []
for elem in e:
payload = ""
if elem["type"] == "attrval":
i0 = data.find(code)
try:
i1 = data[:i0].rfind(elem["name"])
except UnicodeDecodeError:
continue
start = data[i1:i0].replace(" ", "")[len(elem["name"]) :]
if start.startswith("='"):
payload = "'"
if start.startswith('="'):
payload = '"'
if elem["tag"].lower() == "img":
payload += "/>"
else:
payload += "></" + elem["tag"] + ">"
for xss in self.independant_payloads:
payloads.append(payload + xss.replace("__XSS__", code))
elif elem["type"] == "attrname":
if code == elem["name"]:
for xss in self.independant_payloads:
payloads.append(">" + xss.replace("__XSS__", code))
elif elem["type"] == "tag":
if elem["value"].startswith(code):
for xss in self.independant_payloads:
payloads.append(xss.replace("__XSS__", code)[1:])
else:
for xss in self.independant_payloads:
payloads.append("/>" + xss.replace("__XSS__", code))
elif elem["type"] == "text":
payload = ""
if elem["parent"] == "title":
payload = "</title>"
for xss in self.independant_payloads:
payloads.append(payload + xss.replace("__XSS__", code))
return payloads
data = data.replace(code, "none", 1)
return payloads
def validXSS(self, page, code):
if page == None or page == "":
return False
soup = BeautifulSoup.BeautifulSoup(page)
for x in soup.findAll("script"):
if x.string != None and x.string in [t.replace("__XSS__", code) for t in self.script_ok]:
return True
elif x.has_key("src"):
if x["src"] == "http://__XSS__/x.js".replace("__XSS__", code):
return True
return False
