Description
You can execute the attached binary performing an AES-128-ECB encryption on a random input, while observing the value of one particular register at a fixed address throughout the whole computation.
Note: The path /app/ in the provided Python file (aes-distrace.py) needs to be changed to match your environment so that the challenge can run locally.
Files
- docker-compose.yml
-
aes-distrace.c
8.56 KiB – 432409690fa47424495f8122122cbfdd617586174316471a282eb303c2c81811 -
aes-distrace
20.07 KiB – 1f1f5215ad3713d3ad8e4289aaacfbfe5299bf01b55e8ad4e302c2d771bb7ba2 -
aes-distrace.py
1.24 KiB – 3641dc1bd0ff53ea4b07c2863639e46fa29c9907836a6b89856c7ac775941cc4 -
libexeclog.so
48.28 KiB – f4d8d4848deeb3e5ee01a8cce5229ea8eb268af7faaad62725edca648841037e -
qemu-x86_64
13.19 MiB – a82c16266d0c543c0e1e5b2323b4ac683d2c7997e6b36c97aad2973db2f65360
Author
Challenge Instructions
- First, download docker-compose.yml:
curl https://hackropole.fr/challenges/fcsc2025-crypto-aes-distrace/docker-compose.public.yml -o docker-compose.yml - Launch the challenge by executing in the same folder:
docker compose up - Then, in another console, access the challenge with Netcat:
nc localhost 4000
In case you encounter problems, please consult the FAQ.
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