reverseeasy
Narkoman
sbpctf
Task: a Linux ELF binary asks us to pass all checks before it connects to a remote service. Solution: statically recover the required TASK_PORT argument, solve the quadratic check to get hexadecimal port 15b3, and query the server to receive the flag.
$ ls tags/ techniques/
static_analysisinteger_equation_solvingparameter_reconstruction
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