that was fun

bruh

change jnz to jmp in IDA. ;)

Solved with z3 and Cutter. I didn't notice any anti-debugging techniques, and I'm curious. Can someone that experienced that tell me about it? Thanks.

wouldn't call myself more experienced but i guess "debugging" here means actually running the application and debugging the live state as opposed to static analysis?

ptrace(0,0,0,0) functions prevents you debug the program.

flag format: FLAG-something, with no brackets. I was misled, founded two other false flags after I had found the right flag.

Whew, I confused myself a lot on that one hahahaha. Thanks for the super fun challenge, it taught be a ton of new things!

I liked the challenge, was annoying that I I had to have a specific version of openssl installed. Was quicker just to manually recover.

that was fun

bruh

change jnz to jmp in IDA. ;)

Solved with z3 and Cutter. I didn't notice any anti-debugging techniques, and I'm curious. Can someone that experienced that tell me about it? Thanks.

wouldn't call myself more experienced but i guess "debugging" here means actually running the application and debugging the live state as opposed to static analysis?

ptrace(0,0,0,0) functions prevents you debug the program.

Whew, I confused myself a lot on that one hahahaha. Thanks for the super fun challenge, it taught be a ton of new things!