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Source channel @githubtrending · Post #15367 · Dec 25

#cplusplus#arduino#ble_jammer#ble_spoof#ble_spoofer#cybersecurity#deauther#esp32#hack#hacktoberfest#jammer#nrf_scanner#nrf24l01#sour_apple nRFBOX is a handheld ESP32-based tool that scans and analyzes the 2.4 GHz band (Wi‑Fi, BLE, etc.), shows signal strength and channel activity, and can run jamming, BLE jamming/spoofing, and Wi‑Fi deauthentication tests for security research and troubleshooting. It combines an ESP32, NRF24 modules, OLED display, battery management, and SD support for firmware and logging, with notes about limited range, device variability, and power limits when using multiple NRF modules. Benefit: you can use it to find crowded channels, diagnose wireless interference, and test network/device resilience in controlled, legal test environments. https://github.com/cifertech/nRFBox

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Welcome to the Black Parade

@TheB1ackParade · Post #506 · 03/05/2024, 03:58 AM

莫名其妙忙起来了,随便记点免得忘了: 1. tproxy / bpf_sk_assign 对 established tcp 的性能影响是负的,因为设置上 skb->sk 会让 ip_rcv_core 里的 tcp_early_demux 检测失败,从而必须进路由系统。所以正确使用方法是只对 tcp syn 使用 tproxy/sk_assign。 2. 能不能优化 bpf_sk_assign,让它对 listening socket 的 assign 也能像 tcp_early_demux 一样?不能,因为 listening tcp socket 的 sk->sk_rx_dst 是 null,只有 established sk 才有这个 dst。 3. tcpdump ip6 and tcp 生成的 cbpf 是“错的”。它没考虑 ip6 extension。但是 tcpdump (libpcap) 有个对 v6 特别的过滤器: ip6 protochain 6 , 就迭代了 ip6 extension,四次,但是对大部分场景也够用。 4. 晦涩的逻辑。icmp6_host_handle 这个函数名看起来没啥,但是要是我告诉你它实际语义是:只需要在 ( ingress 方向) 或者 (防火墙启动时候的双向) 执行它,如果在 ingress 方向执行的时候不要反弹 icmp6,如果要反弹 icmp6 的话不要反弹 NS for node IP,但是也不要直接返回给内核栈而是继续执行剩余的 nodeport lb。我看着这个原本简单的函数从两个参数变成现在的五个,里外的 #ifdef 嵌套层层恐惧,真是美好的软件。

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KernelSU Next

@ksunext · Post #815 · 07/20/2025, 08:11 PM

kernel: guard syscall hook types - for kernel syscall hooks we need to pass additional guards for ksun (#ifdef CONFIG_KSU -> #if defined(CONFIG_KSU) && !defined(CONFIG_KSU_KPROBES_HOOK)) or else it will fail to build because of undefined symbol - reference https://github.com/KernelSU-Next/kernel_patches/blob/main/syscall_hook/min_scope_syscall_hooks_v1.4.patch https://github.com/KernelSU-Next/KernelSU-Next/commit/45ad73e9dd86a0ff04a02e73a8fc2dbc3160ee6c

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