Download link:
https://adworld.xctf.org.cn/challenges/list
Main function analysis:
Looking at the positions of the read data and the compared data, you will find the problem. They are next to each other and differ by 4 bytes.
According to the main() function, we can know that dword_60106C is 'nuaa'. Pay attention to the little-endian storage (in memory), that is:
000000000060106C→‘a’
000000000060106D→‘a’
000000000060106E→‘u’
000000000060106F→‘n’，
0000000000601068 is the starting position, you can fill in the data in the middle as you like
Learn about .bss: Understand the role of the .bss section in one article_What is stored in the bss section_jxryj's blog-CSDN blog
Final result: cyberpeace{f178d34680e278da75e4b40e9921da97}