Author:
yariza

Language:
C/C++

Upload:
11:59 PM 06/28/2021

Platform
Unix/linux etc.

Difficulty:
2.5

Quality:
4.6

Arch:
x86-64

Description

If the password is random, no one is gonna be able to crack it! Right? e783a6e4c247b7b2923ace333762bd9a random_guessing_game 03ba10418cd9897ea917e75ca485b7f781823884 random_guessing_game 2cee05acd255fe453fbdaf3f50ceeb74ed1c9e35eb860d62a51306e052d692dd random_guessing_game 91a508b88a7931c712493ac0dde720b82107173ce33ca576c1fc472b5454b356aa9fc9d3ff176b0c3ce37c7efe3703ddc77055a6478361964901fc820bebc7a3 random_guessing_game

• Comments
• Solutions

xr@y on 12:44 PM 07/11/2021: I just ended up patching this one. Is there a different way? xray@ubuntu:~/Desktop$ ./random_guessing_game [*] Password: test [*] Checking your password.. [+] Good Job!

yariza on 12:57 PM 07/11/2021: @xr@y Yes, there is another way. Try to understand the assembly code of the program and look for things that are unusual. Hint: To understand this in a better way, take a look at this video by LiveOverflow: https://www.youtube.com/watch?v=qS4VWL5R_OM

xr@y on 2:50 PM 07/11/2021: Thanks for the vid. I actually ended up just using ltrace and watching the calls to rand(). Was able to construct the password from there as well.

ghsi10 on 10:17 PM 07/13/2021: Did you mean that ltrace was used in the challenge to solve it?

ghsi10 on 8:27 AM 07/15/2021: I also solved it by running it twice, is that what you meant?

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