How to save captcha as image (Python)

darkcyber
7 years ago

0

I have a problem to save captcha as png.
Here is my code so far

import requests  
url_login = "https://www.hackthis.co.uk/?login"  
r_login = requests.post(url_login, {'username': 'darkcyber', 'password': 'secr3tp4s5'})  
print r_login.status_code  
if "Invalid login details" in r_login.text:  
        print "Failed to login"  
else:  
        print "Login success"  
url_captcha = "https://www.hackthis.co.uk/levels/extras/captcha1.php"  
r_captcha = requests.get(url_captcha)  
#print r_captcha.status_code << 401 instead 200  
#whats next?

tl0tr
7 years ago

0

I don’t think it is this simple to get the captcha as an image. Python is complicated.

Maybe someone with more knowledge about Python can provide more information.

darkcyber
7 years ago

0

I hope someone help till save captcha as image, and the rest I will do.

ArmaGeddON..! (AGON) [-ArmaGeddON-]
7 years ago

0

You need a session where your login cookies will be stored

```sess = requests.Session()
sess.post(“https://www.hackthis.co.uk/?login”, data={“username”: “abc”, “password”: “xyz”})
cap = sess.get(“https://www.hackthis.co.uk/levels/extras/captcha1.php”)
cap = Image.open(StringIO(cap.content))

StringIO cuz argument 1 must be encoded string without null bytes, not string!

cap.save(“E:/cap.png”)```

Nerd? Yup![/Spoiler]
<!- Hacker? Maybe!

[Spoiler]Hotel? Trivago! -!>

darkcyber
7 years ago | edited 7 years ago

0

@agon
Thanks for the advice anyway.

@tl0tr Deleted

So far my code convert image to text with the basic OCR but the results seems not good, 70 attempt failed.

Any advice?

tl0tr
7 years ago

0

@darkcyber : Remove your code before the entire thread gets deleted.

ArmaGeddON..! (AGON) [-ArmaGeddON-]
7 years ago

0

@darkcyber look at my attempts

[/Spoiler]

So, keep calm and try captcha!

I was using tesseract, but yup the default OCR data didn’t help
<!- This is really a spoiler ->
[Spoiler]The font is unispace (bold)

-!>
So I trained my own tessdata (Tesseract OCR Data)
Level Complete :)

Nerd? Yup![/Spoiler]
<!- Hacker? Maybe!

[Spoiler]Hotel? Trivago! -!>

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How to save captcha as image (Python)

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StringIO cuz argument 1 must be encoded string without null bytes, not string!

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