这是一个简单的批处理代码混淆案例，查看原始内容的方法也是很简单，大佬们只需要去掉文件开头的 0xFF/0xFE 就可以看了嗷..

import re
     
    key = 'ayjVGtkSeWniFrOzUNfDlvhCgcboZwBYHMETqIKpmxRuXPJdQsAL'
    replacestr = 'Bullshit'
     
    #encode
    #%tbmc:~11,1%
    fin = open("decode.txt","r")
    alllines = fin.readlines();
    fin.close()
    fout = open("encode.txt","a")
     
     
    for line in alllines:
        if line[0]==':':
            fout.write(line)
            continue
        strout = ''
        strlen = len(line)
        flag =True
        ##1 == %xx% 2 == %~ 3 == %%i 
        mode = 0
        for i in xrange(0,strlen):
            if line[i]=='%' and  line[i+1]=='%' and mode==0:         
                flag = False
                mode =3
                strout = strout+line[i]
                continue
            elif line[i]=='%' and  line[i+1]=='~' and mode==0:
                flag = False
                mode =2
                strout = strout+line[i]
                continue
            elif line[i]=='%' and key.find(line[i+1])>=0 and mode==0:
                flag = False
                mode =1
                strout = strout+line[i]
                continue
            elif mode ==3 and line[i]=='%':
                strout = strout+line[i]
                continue
             
            if line[i]=='%' and mode ==1:
                mode =0
                flag = True
                strout = strout+line[i]
                continue
            elif line[i]=='"' and mode ==2 or mode ==3:
                mode =0
                flag = True
                strout = strout+line[i]
                continue
            elif line[i]==' ' and mode ==3:
                mode =0
                flag = True
                strout = strout+line[i]
                continue
                 
            nPos = key.find(line[i])
            if nPos>=0 and flag == True:
                temp = '%'+replacestr+':~'+str(nPos)+',1%'
                strout = strout + temp
            else:
                strout = strout+line[i]
        fout.write(strout)
    fout.close()