$ cat writeup.md…
$ cat writeup.md…
ringzer0ctf
Task: reverse a 32-bit little-endian MIPS (uClibc) ELF that reads a numeric password and prints a FLAG-prefixed string only when atoi(input) matches a constant. Solution: static MIPS disassembly recovered the shift/add constant, then Unicorn emulation with GOT-patched libc stubs confirmed the accepted input.
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