re
1. The first question is dragged into ida, the flag is directly in plain text
2. The second question is the 8086 program, dragged into ida, and found that there is a jmp infinite jump, it may be that the segment register has been modified, ida can not be behind The assembly is recognized, so there are a lot of invalid data later, so press c to convert to code, and
then it becomes like this, and find that the string of characters is XOR 1F for each letter, run it with python, and the flag comes out.
crypto:
first question:
not much to say about base64
second question:
bells and whistles, a bunch of traditional characters you do n’t know, stuck here, later you can use Baidu translation, read it, and find it is a homophonic
question 3:
one The moving picture, there are only two cases above, one eats chicken legs and one does not eat, indicating that it is binary, and the binary is converted to text, and the
fourth question is obtained :
jpg is found, you may need to change the suffix, try it, you can open it, and find the symbol inside It is a bit like a pigsty password, but the title prompts the samurai again, indicating that it is the paladin password. Look up the table and get the flag.
Question 5 Yanyanyan language When you
think about converting a string in hexadecimal, the characters should not exceed F, so convert it to
get this. The front should be the key, so I think of Virginia encryption and use it
to decode. The
remaining two questions are still being studied.
Follow-up will be repeated, and more
