explo – Human And Machine Readable Web Vulnerability Testing Format

explo is a simple tool to describe web security issues in a human and machine readable format. By defining a request/condition workflow, explo is able to exploit security issues without the need of writing a script. This allows to share complex vulnerabilities in a simple readable and executable format.

Example for extracting a csrf token and using this in a form:

name: get_csrf
description: extract csrf token
module: http
parameter:
url: http://ift.tt/KQbp1x
method: GET
header:
user-agent: Mozilla/5.0
extract:
csrf: [CSS, "#csrf"]
---
name: exploit
description: exploits sql injection vulnerability with valid csrf token
module: http
parameter:
url: http://ift.tt/KQbp1x
method: POST
body:
csrf: ""
username: "' SQL INJECTION"
find: You have an error in your SQL syntax

In this example definition file the security issue is tested by executing two steps which are run from top to bottom. The last step returns a success or failure, depending on the string ‘You have an error in your SQL syntax’ to be found.

Installation

Install via PyPI

pip install explo

Install via source

git clone http://ift.tt/2q3uLZK
cd explo
python setup.py install

Usage

explo [--verbose|-v] testcase.yaml
explo [--verbose|-v] examples/*.yaml

There are a few example testcases in the examples/ folder.

$ explo examples/SQLI_simple_testphp.vulnweb.com.yaml

You can also include explo as a python lib:

from explo.core import from_content as explo_from_content
from explo.core import ExploException, ProxyException

def save_log(msg):
print(msg)

try:
result = explo_from_content(explo_yaml_file, save_log)
except ExploException as err:
print(err)

Modules
Modules can be added to improve functionality and classes of security issues.

http (basic)
The http modules allows to make a http request, extract content and search/verify content.
The following data is made available for following steps:

  • the http response body: stepname.response.content
  • the http response cookies: stepname.response.cookies
  • extracted content: response.extracted.variable_name

If a find_regex parameter is set, a regular expression match is executed on the response body. If this fails, this module returns a failure and thus stopping the executing of the current workflow (and all steps).
When extracting by regular expressions, use the match group extract to mark the value to extract (view below for an example).
For referencing cookies, reference the name of the previous step where cookies should be taken from (cookies: the_other_step.response.cookies).
Parameter examples:

parameter:
url: http://example.com
method: GET
allow_redirects: True
headers:
User-Agent: explo
Content-Type: abc
cookies: stepname.response.cookies
body:
key: value
find: search for string
find_regex: search for (reg|ular)expression
find_in_headers: searchstring in headers
extract:
variable1: [CSS, '#csrf']
variable2: [REGEX, '<input(.*?)value="(?P<extract>.*?)"']

http_header
The http header module allows to check if a response misses a specified set of headers (and values). All other parameters are identical to the http module.
The following data is made available for other modules:

  • the http response body: stepname.response.content
  • the http response cookies: stepname.response.cookies

Parameter examples:

parameter:
url: http://example.com
method: GET
allow_redirects: True
headers:
User-Agent: explo
Content-Type: abc
body:
key: value
headers_required:
X-XSS-Protection: 1
Server: . # all values are valid

sqli_blind
The sqli_blind module is able to identify time based blind sql injections.
The following data is made available for other modules:

  • the http response body: stepname.response.content
  • the http response cookies: stepname.response.cookies

Parameter examples:

parameter:
url: http://ift.tt/2qsk97O' waitfor delay '00:00:5'--
method: GET
delay_seconds: 5

If the threshold of 5 seconds (delay_seconds) is exceeded, the check returns true (and thus resulting in a success).

from KitPloit – PenTest Tools! http://ift.tt/2rfCrsn

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