pwnPromedium

Want the flag?

spbctf

Task: convince a binary with anti-cheat detection that you want the flag by matching a checker variable to a hardcoded string. Solution: use LD_PRELOAD to inject a constructor that overwrites the checker variable at its known address with the target string before the comparison runs.

$ ls tags/ techniques/
ld_preloadmic_checkmemory_patchinganti_cheat_bypassfunction_hooking
ld_preload_injectionruntime_memory_modificationtiming_based_bypass
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