CAPTCHA Hacking Tool: Automatic Recognition Solution

Can't get CAPTCHA? Try this automated solution

What's the biggest fear of automation programs? CAPTCHA is definitely in the top three! Every time you login/register halfway through a twisted text pops up, the program directly strike. Don't be in a hurry to smash the keyboard, today I will teach you to use proxy IP to solve this problem of the century.

Why do you keep asking for CAPTCHA? Here's the truth.

The site set CAPTCHA mainly to prevent machine operation, but we are doing serious data collection also lie shot. The key point isOperating frequencyrespond in singingIP TrackThe CAPTCHA mechanism will be triggered by the same IP sending 20 requests in a row. To give a chestnut, the same IP continuously sends 20 requests, ironically triggering the CAPTCHA mechanism.

Why don't traditional methods work?

Many people have tried OCR recognition libraries, such as Tesseract. but nowadays CAPTCHA is getting more and more perverted, with the addition of interference lines, distortion, overlap and these tawdry operations. Actual test data:

 Traditional OCR Recognition Example (Python)
from PIL import Image
import pytesseract

text = pytesseract.image_to_string('captcha.png')
print(text) The output is often garbled

This method of recognition rate of 30%, but also special consumption of resources. The most critical thing istreat the symptoms but not the root causeThe site can't block the IP even if it's recognized quickly!

Proxy IP + Intelligent Recognition King Bomb Combination

Our program is a two-step process:

1. Dynamic IP pooling with ipipgoImplementing request triage
2. Docking to third-party recognition platforms (it's okay to train your own models)

Focusing on the first point. ipipgo'sLong-lasting static residential IPThere's a trick - each IP can be used continuously for 2-6 hours, which is especially good for scenarios where you need to keep the session going. For example, configure it like this:

 Example of a proxy using ipipgo
PROXY = {
    'http': 'http://user:pass@gateway.ipipgo.com:9021',
    'https': 'http://user:pass@gateway.ipipgo.com:9021'
}

response = requests.get('destination URL', proxies=PROXY, timeout=10)

Guide to avoiding pitfalls: play this way to be safe

I've seen some people use free proxies to mess around, and their accounts were blocked as a result. Blood lessons tell us:

• Don't use data center IPs (too obvious a feature)
• Each IP operation interval should be randomized (0.5-3 seconds fluctuation)
• Remember to clear cookies and browser fingerprints

Recommended for ipipgomixing and matching modeThe IP pool of their home is updated 200,000+ per day, and the pro-test runs data for three months without flipping.

Practical QA: what you might want to ask

Q: Does proxy IP slow down the speed?
A: It is very important to choose the right service provider! ipipgo has an exclusive BGP line, the measured latency is lower than the peer 40% or so.

Q: What is the appropriate amount of IP I need to buy?
A: small-scale operations choose 500 IP / day package is enough, the average daily 100,000 requests to use the enterprise version!

Q: Is this an illegal operation?
A: Focus on usage! Comply with the target site's robots protocol, don't touch sensitive data and you'll be fine!

Upgrade Play: IP Polling Strategy

Share a private tip--laddered rotationThe following is an example of a dynamic extraction. For example, change 1 IP for every 5 requests, and change a regional IP for every full 50 requests. with ipipgo's API dynamic extraction, you can achieve this effect:

 Example of IP rotation algorithm
ip_pool = get_ipipgo_ips() Get the latest IP pool from ipipgo

def get_proxy().
    global ip_counter
    proxy = ip_pool[ip_counter % len(ip_pool)]
    ip_counter += 1
    return proxy

Lastly, technology is a double-edged sword, and only when used in the right way can it last. Encounter CAPTCHA don't just hard, change the IP sea and sky, ipipgo's flexible billing model is quite suitable for small and medium-sized teams, how much to use how much is not a waste.