[WMCTF2020]easy_re 题解

base64_data=[0x40,0x2c,0x2e,0x31,0x66,0x67,0x76,0x77,0x23,0x60,0x2f,0x32,0x65,0x68,0x75,0x78,0x24,0x7e,0x22,0x33,0x64,0x69,0x74,0x79,0x25,0x5f,0x3b,0x34,0x63,0x6a,0x73,0x7a,0x5e,0x2b,0x7b,0x35,0x62,0x6b,0x72,0x41,0x26,0x3d,0x7d,0x36,0x61,0x6c,0x71,0x42,0x2a,0x2d,0x5b,0x37,0x30,0x6d,0x70,0x43,0x28,0x29,0x5d,0x38,0x39,0x6e,0x6f,0x44]
base64_table=''
for i in range(len(base64_data)):
    base64_table+=chr(base64_data[i])
print(base64_table)

import base64
str1 = "_r-+_Cl5;vgq_pdme7#7eC0="
base64_table = "@,.1fgvw#`/2ehux$~\"3dity%_;4cjsz^+{5bkrA&=}6alqB*-[70mpC()]89noD"
base64_str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
decoded_str = base64.b64decode(str1.translate(str.maketrans(base64_table, base64_str)))
print(decoded_str)