QQ数据库的加密与解密

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qq数据库采用简单加密——异或加密

数据获取：

DENGTA_META.xml—IMEI:867179032952446
databases/2685371834.db——数据库文件

解密方式：

明文msg_t 密文msg_Data key：IMEI
msg_t = msg_Data[i]^IMEI[i%15]

实验：

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import sqlite3

IMEI = '867179032952446'
conn = sqlite3.connect('2685371834.db')
c = conn.cursor()

def _decrypt(foo):
    substr = ''
    #print(len(foo))
    for i in range(0,len(foo)):
        substr += chr(ord(foo[i]) ^ ord(IMEI[i%15]))
    return substr

#rem = c.execute("SELECT uin, remark, name FROM Friends")
Msg = c.execute("SELECT msgData, senderuin, time FROM mr_friend_0FC9764CD248C8100C82A089152FB98B_New")

for msg in Msg:
    uid = _decrypt(msg[1])
    print("\n"+uid+":")
    try:
        msgData = _decrypt(msg[0]).decode('utf-8')
        print(msgData)
    except:
        pass

结果

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