$ cat writeup.md…
$ cat writeup.md…
ringzer0ctf
Task: reverse an ELF for the Altera Nios II soft-core CPU whose main() builds the flag on the stack. Solution: disassemble main with the rasm2 nios2 plugin and simulate the memset fill plus explicit and read-modify-write stores to recover the FLAG- string; the getuid()==1337 gate is a decoy.
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