NX开启状态 $ checksec vuln [*] '~/vuln' Arch: amd64-64-little RELRO: Partial RELRO Stack: No canary found NX: NX enabled PIE: No PIE (0x400000) the NX bit. The NX bit has the effect of preventing memory areas not supposed to contain code (typically, the stack) from being executed ROP mprotect sigreturn……

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