1761206468

old/build_poweroff_aarch64.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+set -e
+as -o poweroff_aarch64.o poweroff_aarch64.s
+ld -o poweroff_aarch64 poweroff_aarch64.o

old/build_poweroff_x86_x64.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+set -e
+nasm -f elf64 -o poweroff_x86_64.o poweroff_x86_64.asm
+ld -o poweroff_x86_64 poweroff_x86_64.o and linkx86_64.snasm -f elf64 -o poweroff_x86_64.o poweroff_x86_64.asm

old/nuke_me_NOW.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+# todo: find them and parse them
+# set -e
+debug=2 # 1 to enable any other to disable
+
+if [[ $debug == 1 ]]; then
+    output_log=output.log
+    error_log=error.log
+elif [[ $debug=2 ]]; then
+    output_log=-
+    error_log=-
+else
+    output_log=/dev/null
+    error_log=/dev/null
+fi
+
+lsblk --list | awk '{printf "%s%s\n", "/dev/",$1}' | tail -n +2 | \
+    while read device; do
+        if [ -f $device ]; then
+            isLuks=$(cryptsetup isLuks $device)
+            echo $isLuks
+            if [[ $isLuks == 0 ]]; then
+                # nuke the luks headers
+                nice -20 cryptsetup erase -q $device 1>>$output_log 2>>$error_log || cryptsetup erase -q --disable-lock $device 1>>$output_log 2>>$error_log
+            fi
+        fi
+    done
+
+# immediate halt power
+nice -20 poweroff -ff 1>>$output_log 2>>$error_log || shutdown -P now 1>>$output_log 2>>$error_log

old/poweroff_aarch64.s

@@ -0,0 +1,28 @@
+.global _start
+.text
+
+_start:
+    // Arguments are passed in registers x0 through x7 for AArch64.
+    // sys_reboot magic constants
+    mov x0, #0xfee1dead
+    mov x1, #0x28121969
+
+    // The Linux constant LINUX_REBOOT_CMD_HALT
+    mov x2, #0xcdef0123
+
+    // The fourth argument (x3) is optional, so set it to 0.
+    mov x3, #0
+
+    // The syscall number for sys_reboot on AArch64 is 169.
+    // The syscall number is placed in the X8 register.
+    mov x8, #169
+
+    // Execute the syscall.
+    svc #0
+
+    // This code should not be reached.
+    // If it is, exit with a status code.
+    // sys_exit is syscall number 93 on AArch64.
+    mov x8, #93
+    mov x0, #1
+    svc #0

old/poweroff_x86_64.asm

@@ -0,0 +1,31 @@
+section .text
+    global _start
+
+_start:
+    ; The sys_reboot system call has the number 169.
+    mov rax, 169
+
+    ; Argument 1: RDI
+    ; Linux REBOOT_MAGIC1 constant
+    mov rdi, 0xfee1dead
+
+    ; Argument 2: RSI
+    ; Linux REBOOT_MAGIC2 constant
+    mov rsi, 0x28121969
+
+    ; Argument 3: RDX
+    ; LINUX_REBOOT_CMD_HALT constant
+    mov rdx, 0xcdef0123
+
+    ; Argument 4: R10
+    ; Zero out the optional fourth argument.
+    xor r10, r10
+
+    ; Call the syscall.
+    syscall
+
+    ; The program should not reach here.
+    ; Exit with an error code as a fallback.
+    mov rax, 60
+    mov rdi, 1
+    syscall

old/wrapper.c

@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int main(int argc, char *argv[]) {
+    // Drop privileges before running the command
+    setuid(getuid());
+
+    // Pass all arguments to the target command
+    execvp(argv[1], &argv[1]);
+
+    // This is only reached if execvp fails
+    perror("execvp");
+    return 1;
+}