[ 源码 ] - ZERO资源分享

antiban(__int64, 
sub_3F99E8, (__int64 a1, __int64 a2, double a3)) {
    __int64 result = osub_3F99E8(a1, a2, a3);

    switch ((int)a2) {
        case 769:
        case 770:
        case 776:
        case 782:
        case 785:
        case 856:
        case 867:
        case 908:
          
            if (a1) {
                *(uint64_t*)(a1 + 0xE0) = 0;  // field_E0
                *(uint64_t*)(a1 + 0xD0) = 0;  // field_D0
            }
            return 0LL;
    }

    return result;
}

antiban(__int64, sub_437260, (__int64 result, __int64 *a2, __int64 a3)) {
    if (!a2 || *a2 == a2[1]) return osub_437260(result, a2, a3);
    __int64 cmd_ptr = *a2;    
    __int64 cmd = *(__int64 *)cmd_ptr;
    
    int type = *(int *)(cmd + 4);
    if (type == 3) {
        *a2 += 8;
        return 1;
    }
    return osub_437260(result, a2, a3);
}

    

uintptr_t getFunctionOffset(const char* libName, const char* funcName) {
    if (!libName || !funcName) return 0;
    void* libHandle = dlopen(libName, RTLD_NOLOAD | RTLD_LAZY);
    if (!libHandle) {
        libHandle = dlopen(libName, RTLD_NOW | RTLD_GLOBAL);
    }
    if (!libHandle) return 0;
    void* funcAddr = dlsym(libHandle, funcName);
    if (!funcAddr) {
        char altName[256];
        snprintf(altName, sizeof(altName), "__%s", funcName);
        funcAddr = dlsym(libHandle, altName);
    }
    if (!funcAddr) {
        dlclose(libHandle);
        return 0;
    }
    uintptr_t baseAddr = (uintptr_t)findLibrary(libName);
    if (!baseAddr) {
        dlclose(libHandle);
        return 0;
    }
    uintptr_t offset = (uintptr_t)funcAddr - baseAddr;
    dlclose(libHandle);
    return offset;
}

Notes- This function within the library finds the offset and applies it.

Example     CODE 1     uintptr_t ioctl_off = getFunctionOffset("libc.so", "ioctl"); CODE 2     if (ioctl_off) { char buf[32]; snprintf(buf, sizeof(buf), "0x%lx", ioctl_off); HOOK_LIB("libc.so", buf, hioctl, oioctl); }

By @PwrZy

char* (*orig_fgets_chk)(char* str, int size, int check, FILE* stream) = nullptr;
char* hk_fgets_chk(char* str, int size, int check, FILE* stream) {
    char* result = orig_fgets_chk(str, size, check, stream);
    if (result != nullptr) {
        if (strstr(str, "libUE4.so") == nullptr && (strstr(str, "minicpy") || strstr(str, "dobby") || strstr(str, "shadowhook"))) {
            memset(str, 0, size);
            return orig_fgets_chk(str, size, check, stream);
        }
    }
    return result;
}

shadowhook_hook_sym_name("/system/lib64/libc.so", "__fgets_chk", (void *)hk_fgets_chk, (void **)&orig_fgets_chk);

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