pwnProhard

CFI++

hackthebox

Task: A SafeStack-protected PIE combines an unbounded gets with custom forward-edge CFI and a shadow stack. Solution: Abuse unlimited-stack TLS adjacency, relocate the unsafe stack, rewrite the mutable CFI base, stage BSS ORW ROP, and pivot.

stack_overflow pie tls rop amd64 safestack control_flow_integrity custom_shadow_stack

arbitrary_writestack_pivotpie_leaktls_corruptionunsafe_stack_relocationcfi_base_corruptionbss_ropsyscall_orw

$ ls tags/ techniques/

stack_overflow pie tls rop amd64 safestack control_flow_integrity custom_shadow_stack

arbitrary_writestack_pivotpie_leaktls_corruptionunsafe_stack_relocationcfi_base_corruptionbss_ropsyscall_orw

Analysis

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$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

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