CTF比赛中常用的Python脚本
凯撒密码:
#!/usr/bin/env python
# -*- encoding: utf-8 -*-
'''
@Time : 2018/12/23 09:56:53
@Author : HeliantHuS
@Version : 1.0
@Contact : 1984441370@qq.com
'''
import string
inputStr = input("输入:").lower()
caseS1 = string.ascii_lowercase * 2
# caseS1 = string.ascii_uppercase * 2
for j in range(26):
result_list = []
for i, num in zip(inputStr, range(len(inputStr))):
status = caseS1.find(i)
if status != -1:
result_list.append(caseS1[status + j])
else:
result_list.append(inputStr[num])
print("".join(result_list), "向右偏移了{}位".format(j))
栅栏密码:
#!/usr/bin/env python
# -*- encoding: utf-8 -*-
'''
@Time : 2018/12/23 09:55:19
@Author : HeliantHuS
@Version : 1.0
@Contact : 1984441370@qq.com
'''
string = input("输入:")
frequency = [] # 获得栅栏的栏数
result_len = len(string) # 栅栏密码的总长度 25
for i in range(2, result_len): # 最小栅栏长度为2 逐个测试2,3,4....
if(result_len % i == 0): # 当栅栏密码的总长度 模 i 余数为0 则这个i就是栅栏密码的长度
frequency.append(i)
for numberOfColumn in frequency: # 循环可能分的栏数
RESULT = [] # 保存各栏数的结果
for i in range(numberOfColumn): # i : 开始取值的位置
for j in range(i, result_len, numberOfColumn): # 开始取值, 隔栏数取一个值, 起始位置是i
RESULT.append(string[j])
print("".join(RESULT))
QWE密码:
#!/usr/bin/env python
# -*- encoding: utf-8 -*-
'''
@Time : 2018/12/23 10:15:16
@Author : HeliantHuS
@Version : 1.0x
@Contact : 1984441370@qq.com
'''
import string
str1 = "qwertyuiopasdfghjklzxcvbnm"
str2 = string.ascii_lowercase # abcdefg...
inputString = input("请输入:")
result = []
for i in inputString.lower():
aa = str1.find(i)
result.append(str2[aa])
print("".join(result))
xor异或:
#!/usr/bin/env python
# -*- encoding: utf-8 -*-
'''
@Time : 2018/12/20 14:17:59
@Author : HeliantHuS
@Version : 1.0
@Contact : 1984441370@qq.com
'''
import base64
s1 = list(b'')
for i in range(200):
result = ""
for j in range(len(s1)):
result += chr(s1[j] ^ i)
print(result)
ROT13:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
'''
@Author : HeliantHuS
@Time : 2018/12/17 8:26
@Version : 1.0
@Contact : 1984441370@qq.com
'''
import string
s1 = ""
rot13_1 = string.ascii_lowercase[:13]
rot13_2 = string.ascii_lowercase[13:]
result = []
for i in s1:
find_1 = rot13_1.find(i.lower())
if find_1 != -1:
if i.isupper():
result.append(rot13_2[find_1].upper())
continue
result.append(rot13_2[find_1])
find_2 = rot13_2.find(i.lower())
if find_2 != -1:
if i.isupper():
result.append(rot13_1[find_2].upper())
continue
result.append(rot13_1[find_2])
if find_1 == -1 and find_2 == -1:
result.append(i)
print("". join(result))
额外的~~~端口扫描:
#!/usr/bin/env python
# -*- encoding: utf-8 -*-
'''
@Time : 2018/12/23 10:17:13
@Author : HeliantHuS
@Version : 1.0
@Contact : 1984441370@qq.com
'''
import queue
import socket
import threading
queue = queue.Queue()
class process(threading.Thread):
def __init__(self, message):
threading.Thread.__init__(self)
self.queue = queue
self.open_port = []
def run(self):
while True:
num = self.queue.get()
self.numJ(num)
self.queue.task_done()
def numJ(self, num):
sk = socket.socket()
try:
sk.connect(("127.0.0.1", num))
print(num , "open")
self.open_port.append(num)
except:
# print(num , "close")
pass
def main():
for i in range(5):
t = process(queue)
t.setDaemon(True)
t.start()
ports = [21,22,23,80,135,137,161,443,3306,3389,8080,2121,1524,1364,8081,9090]
for num in ports:
queue.put(num)
queue.join()
if __name__ == '__main__':
main()
码字很辛苦,转载请注明来自冰黎的博客的《CTF比赛中常用的Python脚本》
2018-12-23
CTF
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