攻防世界 easy-apk
http://ethereal.prohitime.top/demo/novel
protected void onCreate(Bundle arg3) {
super.onCreate(arg3);
this.setContentView(0x7F04001B);
this.findViewById(0x7F0B0076).setOnClickListener(new View$OnClickListener() {
public void onClick(View arg8) {
if(new Base64New().Base64Encode(MainActivity.this.findViewById(0x7F0B0075).getText().toString().getBytes()).equals("5rFf7E2K6rqN7Hpiyush7E6S5fJg6rsi5NBf6NGT5rs=")) {
Toast.makeText(MainActivity.this, "验证通过!", 1).show();
}
else {
Toast.makeText(MainActivity.this, "验证失败!", 1).show();
}
}
});
}
逻辑很简单,比较输入和后面那个字符串,不过输入的字符串被加密过了,并且是改变后的base64加密
在这里贴一个加解密脚本(可变换码表)
# coding:utf-8
# s = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
s = "vwxrstuopq34567ABCDEFGHIJyz012PQRSTKLMNOZabcdUVWXYefghijklmn89+/"
def My_base64_encode(inputs):
# 将字符串转化为2进制
bin_str = []
for i in inputs:
x = str(bin(ord(i))).replace('0b', '')
bin_str.append('{:0>8}'.format(x))
#print(bin_str)
# 输出的字符串
outputs = ""
# 不够三倍数,需补齐的次数
nums = 0
while bin_str:
#每次取三个字符的二进制
temp_list = bin_str[:3]
if(len(temp_list) != 3):
nums = 3 - len(temp_list)
while len(temp_list) < 3:
temp_list += ['0' * 8]
temp_str = "".join(temp_list)
#print(temp_str)
# 将三个8字节的二进制转换为4个十进制
temp_str_list = []
for i in range(0,4):
temp_str_list.append(int(temp_str[i*6:(i+1)*6],2))
#print(temp_str_list)
if nums:
temp_str_list = temp_str_list[0:4 - nums]
for i in temp_str_list:
outputs += s[i]
bin_str = bin_str[3:]
outputs += nums * '='
print("Encrypted String:
%s "%outputs)
def My_base64_decode(inputs):
# 将字符串转化为2进制
bin_str = []
for i in inputs:
if i != '=':
x = str(bin(s.index(i))).replace('0b', '')
bin_str.append('{:0>6}'.format(x))
#print(bin_str)
# 输出的字符串
outputs = ""
nums = inputs.count('=')
while bin_str:
temp_list = bin_str[:4]
temp_str = "".join(temp_list)
#print(temp_str)
# 补足8位字节
if(len(temp_str) % 8 != 0):
temp_str = temp_str[0:-1 * nums * 2]
# 将四个6字节的二进制转换为三个字符
for i in range(0,int(len(temp_str) / 8)):
outputs += chr(int(temp_str[i*8:(i+1)*8],2))
bin_str = bin_str[4:]
print("Decrypted String:
%s "%outputs)
print()
print(" *************************************")
print(" * (1)encode (2)decode *")
print(" *************************************")
print()
num = input("Please select the operation you want to perform:
")
if(num == "1"):
input_str = input("Please enter a string that needs to be encrypted:
")
My_base64_encode(input_str)
else:
input_str = input("Please enter a string that needs to be decrypted:
")
My_base64_decode(input_str)