BUUCTF在线评测 (buuoj.cn)
放到jadx找主函数
也可以用Jeb打开，Tab反编译成java
写个脚本
str=['d','d','2','9','4','0','c','0','4','4','6','2','b','4','d','d','7','c','4','5','0','5','2','8','8','3','5','c','c','a','1','5']
str[2]=chr(ord(str[2])+ord(str[3])-50)
str[4]=chr( ord(str[2])+ord(str[5])-0x30 )
str[30]=chr( ord(str[0x1f])+ord(str[9])-0x30)
str[14]=chr( ord(str[27])+ord(str[28])-97 )
for i in range(16):
x=str[0x1f-i]
str[0x1f-i]=str[i]
str[i]=x
for i in str:
print (i,end="")
此题学了Jeb的使用，Jeb主要用来进行安卓逆向
Jeb可以去吾爱破解工具包里找
4_Jeb_AndroidKiller&apktool工具的使用_哔哩哔哩_bilibili
