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一个python生成的exe反编译的问题，首先使用pyinstxtractor.py得到反编译的pyc文件
这里缺了.pyc文件的文件头需要补一下

利用在线网站得到反编译的python代码（还是在线好用，本地的工具只能反编译一半的汇编）：

import base64
def gen(key):
    s = list(range(256))
    j = 0
    for i in range(256):
        j = (j + s[i] + ord(key[i % len(key)])) % 256
        tmp = s[i]
        s[i] = s[j]
        s[j] = tmp
        i = j = 0
        data = []
        for _ in range(50):
            i = (i + 1) % 256
            j = (j + s[i]) % 256
            tmp = s[i]
            s[i] = s[j]
            s[j] = tmp
            data.append(s[(s[i] + s[j]) % 256])
            return data

def encrypt(text, key):
    result = ''
    for c, k in zip(text, gen(key)):
        result += chr(ord(c) ^ k)
        result = base64.b64encode(result.encode()).decode()
        return result
text = input('Flag: ')
key = 'As_we_do_as_you_know'
enc = encrypt(text, key)
if enc == 'wr3ClVcSw7nCmMOcHcKgacOtMkvDjxZ6asKWw4nChMK8IsK7KMOOasOrdgbDlx3DqcKqwr0hw701Ly57w63CtcOl':
    print('yes!')
    return None
None('try again...'

根据特征确定为base64+RC4加密