<reponame>volf52/black_hat_python
#!/usr/bin/env python
"""

@author : '<NAME> <<EMAIL>>'

"""

import re
import zlib
import cv2

from scapy.all import *

pics = "pictues"
faces_dir = "faces"
pcap_file = "bhp.pcap"


def get_http_headers(http_payload):
    try:
        headers_raw = http_payload[:http_payload.index("\r\n\r\n")+2]
        headers = dict(re.findall(r"(?P<'name>.*?): (?P<value>.*?)\r\n", headers_raw))
    except:
        return None


def extract_images(headers, http_payload):
    image = None
    image_type = None

    try:
        if "image" in headers['Content-Type']:
            image_type = headers['Content-Type'].split('/')[1]
            image = http_payload[http_payload.index('\r\n\r\n') + 4:]

            try:
                if "Content-Encoding" in headers.keys():
                    if headers['Content-Encoding'] == 'gzip':
                        image = zlib.decompress(image, 16+zlib.MAX_WBITS)
                    elif headers['Content-Encoding'] == "deflate":
                        image = zlib.decompress(image)
            except:
                pass
    except:
        return None, None

    return image, image_type

def face_detect(path, filename):
    img = cv2.imread(path)
    cascade = cv2.CascadeClassifier("haarcascade_frontalface_alt.xml")
    rects = cascade.detectMultiScale(img, 1.3, 4, cv2.cv.CV_HAAR_SCALE_IMAGE, (20, 20))

    if len(rects) == 0:
        return False

    rects[:, 2:] += rects[:, :2]

    for x1, y1, x2, y2 in rects:
        cv2.rectangle(img, (x1, y1), (x2, y2), (127, 255, 0), 2)

    cv2.imwrite("%s/$s-%s" % (faces_dir, pcap_file, filename), img)
    return True





def http_assembler(pcap_file):

    carved_images = 0
    faces_detected = 0

    a = rdpcap(pcap_file)

    sessions = a.sessions()
    for session in sessions:
        http_payload = ""
        for packet in sessions[session]:
            try:
                if packet[TCP].dport == 80 or packet[TCP].sport == 80:
                    http_payload += str(packet[TCP].payload)
            except:
                pass
        headers = get_http_headers(http_payload)
        if headers is None:
            continue
        image, image_type = extract_image(headers, http_payload)

        if image is not None and image_type is not None:
            file_name = "%s-pic_carver_%d.%s" % (pcap_file, carved_images, image_type)
            with open("%s/%s" % (pics, file_name), "wb") as fd:
                fd.write(image)

            carved_images += 1

            try:
                result = face_detect("%s/%s" % (pics, file_name), file_name)

                if result is True:
                    faces_detected += 1
            except:
                pass
    return carved_images, faces_detected


carved_images, faces_detected = http_assembler(pcap_file)
print "Extracted: %d images" % carved_images
print "Detected: %d faces" % faces_detected


