stack-overflow-and-rop

To build a ROP chain for a stack overflow with ASLR and PIE enabled, you identify gadgets using tools like ROPgadget or ropper, then assemble reliable payloads using pwntools to bypass mitigations through techniques like stack pivoting and ret2libc.

Ret2libc targets dynamically linked functions in the C library, while ret2csu leverages specific gadgets in the __libc_csu_init function to control arguments and bypass protections during stack overflow exploitation.

To bypass stack canaries during stack overflow exploitation, you can use techniques like brute-forcing the canary value, leaking it through format strings, or overwriting saved return addresses indirectly via stack pivoting to avoid canary corruption.

Use SROP when you can control the stack pointer and need to invoke syscalls directly via a SigreturnFrame, whereas ret2dlresolve is used to dynamically resolve and call arbitrary libc functions without leaking addresses.

Yes, you can use pwntools alongside external tools like ROPgadget or ropper to automate gadget discovery and chain assembly, streamlining the process of generating robust ROP payloads for CTF and vulnerability research scenarios.