ESP32 Wi-Fi Penetration Tool

Wi-Fi Stack Libraries (WSL) Bypasser component

This components main purpose is to bypass Wi-Fi Stack Libaries blocking mechanism that disallows sending some types of raw 802.11 frames.

It’s based on ESP32-Deauther project, where the function used to check type of frame in frame buffer was decompiled by Ghidra tool and it’s name ieee80211_raw_frame_sanity_check was found.

The princip of this bypass is to use linker flag during compilation that allows multiple function definitions - -Wl,-zmuldefs. This allows this component to override default function behaviour and always return value that allows further transmittion of frame buffer by Wi-Fi Stack Libraries.

This is done in CMakeLists.txt by following line:

target_link_libraries(${COMPONENT_LIB} -Wl,-zmuldefs)

And the function itself is defined in wsl_bypasser.c as:

int ieee80211_raw_frame_sanity_check(int32_t arg, int32_t arg2, int32_t arg3){
    return 0;
}