first commit!

10进制转换ascii.py

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+import argparse
+
+parser = argparse.ArgumentParser()
+parser.add_argument('-t', type=str, default=None, required=True,
+                    help='输入10进制数据')
+args  = parser.parse_args()
+
+
+data = args.t
+ret = ""
+while len(data):
+    if int(data[:3]) <= 127:
+        ret += chr(int(data[:3]))
+        data = data[3:]
+    else:
+        ret += chr(int(data[:2]))
+        data = data[2:]
+print(ret)

16进制文本转换ascii.py

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+import argparse
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument('-t', type=str, default=None, required=True,
+                    help='输入十六进制文本')
+args  = parser.parse_args()
+
+
+def range_N(isPositiveInteger=None):
+    for i in range(256):
+        try:
+            flag = "".join(chr(int(j, 16) + i) for j in one_byte) if isPositiveInteger else "".join(chr(int(j, 16) - i) for j in one_byte)
+            print(f"[ +{i} ] --> {flag}") if isPositiveInteger else print(f"[ -{i} ] --> {flag}")
+        except ValueError:
+            print(f"[ 最多只能加到{i - 1}! ]\n") if isPositiveInteger else print(f"[ 最多只能减到{i - 1}! ]\n")
+            break
+
+
+one_byte = [args.t[i: i + 2] for i in range(0, len(args.t), 2)]
+flag = "".join(chr(int(i, 16)) for i in one_byte)
+print(f"\n[ 16进制 -> Ascii ]:\n{flag}\n")
+
+input_ = input("转换为10进制然后 - N, (N范围0~255)? (Y/n):")
+if input_ not in ["Y", "y", ""]:
+    exit()
+else:
+    range_N(isPositiveInteger=False)
+
+input_ = input("转换为10进制然后 + N, (N范围0~255)? (Y/n):")
+if input_ not in ["Y", "y", ""]:
+    exit()
+else:
+    range_N(isPositiveInteger=True)

2进制文本转换ascii.py

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+import argparse
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument('-t', type=str, default=None, required=True,
+                    help='输入二进制文本')
+args  = parser.parse_args()
+
+cipher = args.t
+
+def BintoAsc(cipher):
+    print(cipher)
+    # 7bit 一字节
+    print("[7Bit]: " + "".join(chr(int(cipher[i:i+7], 2)) for i in range(0, len(cipher), 7)))
+    # 8bit 一字节
+    print("[8Bit]: " + "".join(chr(int(cipher[i:i+8], 2)) for i in range(0, len(cipher), 8)))
+    print()
+
+def Reverse_BintoAsc(cipher):
+    # 7bit 一字节
+    print("[7Bit]: " + "".join(chr(int(cipher[i:i+7][::-1], 2)) for i in range(0, len(cipher), 7)))
+    # 8bit 一字节
+    print("[8Bit]: " + "".join(chr(int(cipher[i:i+8][::-1], 2)) for i in range(0, len(cipher), 8)))
+    print()
+
+# 正常情况
+BintoAsc(cipher)
+
+# 特殊情况1
+input_ = input("是否尝试全部字节倒序后转换Ascii码? (Y/n):")
+if input_ not in ["Y", "y", ""]:
+    exit()
+else:
+    reverse_cipher = cipher[::-1]
+    BintoAsc(reverse_cipher)
+# 特殊情况2
+
+input_ = input("是否尝试每个字节依次倒序后转换Ascii码? (Y/n):")
+if input_ not in ["Y", "y", ""]:
+    exit()
+else:
+    Reverse_BintoAsc(cipher)
+
+# 特殊情况3
+input_ = input("是否尝试0和1交换后转换Ascii码? (Y/n):")
+if input_ not in ["Y", "y", ""]:
+    exit()
+else:
+    new_cipher = "".join("1" if i == "0" else "0" for i in cipher)
+    BintoAsc(new_cipher)

2进制绘制二维码.py

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+import cv2
+import argparse
+import itertools
+import numpy as np
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument('-f', type=str, default=None, required=True,
+                    help='输入文件名称')
+parser.add_argument('-r', type=int, default=None, required=True,
+                    help='输入行数',)
+parser.add_argument('-c', type=int, default=None, required=True, 
+                    help='输入列数')
+parser.add_argument('-size', type=int, default=15,
+                    help='图片放大倍数(默认15倍)')
+args  = parser.parse_args()
+
+file_name = args.f
+row, col = args.r, args.c
+size = args.size
+
+# read file
+with open(file_name, "r") as f:
+    data = f.read()
+
+img1 = np.zeros((row * size, col * size))
+img2 = np.zeros((row * size, col * size))
+
+left_top_point = []
+for i, j in itertools.product(range(0, row * size, size), range(0, col * size, size)):
+    left_top = (j, i)
+    left_top_point.append(left_top)
+
+def draw_QR(img, reverse=False):
+    for i, v in enumerate(data):
+        right_bottom_point = (left_top_point[i][0] + size, left_top_point[i][1] + size)
+        if not reverse:
+            cv2.rectangle(img, left_top_point[i], right_bottom_point, color=(255, 255, 255), thickness=-1) if v == "0" else cv2.rectangle(img, left_top_point[i], right_bottom_point, color=(0, 0, 0), thickness=-1)            
+        else:
+            cv2.rectangle(img, left_top_point[i], right_bottom_point, color=(0, 0, 0), thickness=-1) if v == "0" else cv2.rectangle(img, left_top_point[i], right_bottom_point, color=(255, 255, 255), thickness=-1)                
+
+draw_QR(img1, reverse=False)
+draw_QR(img2, reverse=True)
+img = np.concatenate([img1, img2], axis=0)
+
+cv2.imshow("images", img)
+cv2.waitKey(0)

BlindWaterMarkplus.py

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+# coding=utf-8
+import cv2   
+import numpy as np
+import random
+import os
+from argparse import ArgumentParser
+ALPHA = 5
+
+
+def build_parser():
+    parser = ArgumentParser()
+    parser.add_argument('--original', dest='ori', required=True)
+    parser.add_argument('--image', dest='img', required=True)
+    parser.add_argument('--result', dest='res', required=True)
+    parser.add_argument('--alpha', dest='alpha', default=ALPHA)
+    return parser
+
+
+def main():
+    parser = build_parser()
+    options = parser.parse_args()
+    ori = options.ori
+    img = options.img
+    res = options.res
+    alpha = options.alpha
+    if not os.path.isfile(ori):
+        parser.error("original image %s does not exist." % ori)
+    if not os.path.isfile(img):
+        parser.error("image %s does not exist." % img)
+    decode(ori, img, res, alpha)
+
+def decode(ori_path, img_path, res_path, alpha):
+    ori = cv2.imread(ori_path)
+    img = cv2.imread(img_path)
+    ori_f = np.fft.fft2(ori)
+    img_f = np.fft.fft2(img)
+    height, width = ori.shape[0], ori.shape[1]
+    watermark = (ori_f - img_f) / alpha
+    watermark = np.real(watermark)
+    res = np.zeros(watermark.shape)
+    random.seed(height + width)
+    x = range(height / 2)
+    y = range(width)
+    random.shuffle(x)
+    random.shuffle(y)
+    for i in range(height / 2):
+        for j in range(width):
+            res[x[i]][y[j]] = watermark[i][j]
+    cv2.imwrite(res_path, res, [int(cv2.IMWRITE_JPEG_QUALITY), 100])
+
+if __name__ == '__main__':
+    main()

Example.txt

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+0000000001110010000000000000000000001111010000000000000000011100010000000000000000010111100000000000000000001010101000000000000000000011000101000000000000000010101010100000000000000000100000110000000011000111011101101000110000001000010110010010010100010011110100001110111001100111101001010110010010011000001001100001001101000111100011111101110010100010110111110011011111101111000110110010010101101100100011110011111111111011100000000101100011000101000000000010010100101010001000000001010101010001100100000000001001111111100100000000000011001011110111000000000100110010010000100000000110000110110110010000000011010000101110101

PNG宽高CRC一键脚本.py

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+import zlib
+import struct
+import binascii
+import argparse
+import itertools
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument("-t", type=str, default=None, required=True,
+                    help="输入同级目录下图片的名称")
+args  = parser.parse_args()
+
+
+image_data = open(args.t, 'rb')
+bin_data = image_data.read()
+crc32key = zlib.crc32(bin_data[12:29])  # 使用函数计算
+if crc32key == int(bin_data[29:33].hex(), 16):  # 对比算出的CRC和原本的CRC
+    print('宽高没有问题')
+else:
+    print('宽高被改了')
+
+    input_ = input("是否CRC爆破宽高? (Y/n):")
+    if input_ not in ["Y", "y", ""]:
+        exit()
+    else:
+        crcbp = open(args.t, "rb").read()    #打开图片
+        crc32frombp = int(crcbp[29:33].hex(),16)     #读取图片中的CRC校验值
+        print(crc32frombp)
+        for i, j in itertools.product(range(4000), range(4000)):
+            data = crcbp[12:16] + \
+                struct.pack('>i', i)+struct.pack('>i', j)+crcbp[24:29]
+            crc32 = binascii.crc32(data) & 0xffffffff
+            if(crc32 == crc32frombp):            #计算当图片大小为i:j时的CRC校验值，与图片中的CRC比较，当相同，则图片大小已经确定
+                print(i, j)
+                print('hex:', hex(i), hex(j))
+                exit(0)

base64异或.py

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+import base64
+
+
+# 1.先解开base64
+b = base64.b64decode('aWdxNDs0NDFSOzFpa1I1MWliT08w')
+# 2.转换为ascii十进制
+data = list(b)
+
+# 3.与[0, 200) 异或找到一个没有符号的
+for i in range(0, 200):
+    key = ''
+    for j in range(len(data)):
+        key += chr(data[j]^i)
+    print(key)

caesar.py

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+import string
+import argparse
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument("-t", type=str, default=None, required=True,
+                    help="输入凯撒加密的字符串")
+args  = parser.parse_args()
+
+
+asc = string.ascii_letters
+
+# 一共是25种情况，26的时候和密文一样
+for i in range(1, 26):
+    dic = {c: asc[(asc.index(c) + i) % 26] for c in asc}
+    m = "".join(dic.get(j, j) for j in args.t)
+    print(i, m)
+
+'''
+gmbh| xxxxxxxxx ~
+gmbh转换为ascii,然后-1,再转为ascii,等于flag{ xxxxxx }
+'''
+if "gmbh" in args.t[:5]:
+    input_ = input("可能是先转换ascii - 1,再转换ascii. 是否尝试? (Y/n):")
+    if input_ not in ["Y", "y", ""]:
+        exit()
+    else:
+        print("".join(chr(ord(i) - 1) for i in args.t))

pyshark_demo.py

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+import pyshark
+
+cap = pyshark.FileCapture("./ping.pcap", tshark_path="D:/Program Files/Wireshark/tshark.exe")
+
+cipher = "".join(c.icmp.data[:2] for c in cap)
+plantext = "".join(chr(int(cipher[i:i+2], 16)) for i in range(0, len(cipher), 2))
+print(plantext)

test.py

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+a = [1, 2, 3]
+
+b = []
+for i in a:
+    b.extend([i for _ in range(10)])
+
+print(b)

ttl隐写.py

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+import argparse
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument('-f', type=str, default=None, required=True,
+                    help='输入文件名称')
+args  = parser.parse_args()
+
+
+file_name = args.f
+
+with open(file_name) as f:
+    data = f.read()
+    data = data.splitlines()
+
+dic = {"63": "00", "127": "01", "191": "10", "255": "11"}
+text = ""
+for i in data:
+    if i := (dic.get(i, None)):
+        text += i
+print(text)

字母频率.py

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+import string
+import argparse
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument('-f', type=str, default=None, required=True,
+                    help='输入文件名')
+args  = parser.parse_args()
+
+
+with open(args.f, "r") as f:
+	data = f.read()
+
+
+dic = {i: 0 for i in string.ascii_lowercase}
+
+# 词频分析
+for i in data:
+	if i in dic:
+		dic[i] += 1
+
+# 从大到小排序一下
+dic = sorted(dic.items(), key=lambda i:i[1], reverse=True)
+# [('e', 39915), ('t', 29048), ('a', 26590), ('o', 26141), ('h', 22531), ('n', 21825), ('r', 21650), ('i', 20815), ('s', 19714), ('d', 16617), ('l', 14594), ('u', 9755), ('g', 8619), ('y', 8619), ('w', 8397), ('m', 7394), ('f', 6857), ('c', 6696), ('p', 5548), ('b', 5328), ('k', 4009), ('v', 2908), ('q', 420), ('x', 383), ('j', 370), ('z', 264)]
+
+
+print(dic, end="\n\n")
+
+# 拿到前16个
+ret = "".join(j[0] for index, j in enumerate(dic))
+print(ret)